WO2014194493A1

WO2014194493A1 - Method, device and system for reducing confirmation packets at transmission control layer

Info

Publication number: WO2014194493A1
Application number: PCT/CN2013/076787
Authority: WO
Inventors: 卢建民; 唐珂
Original assignee: 华为技术有限公司
Priority date: 2013-06-05
Filing date: 2013-06-05
Publication date: 2014-12-11
Also published as: CN103534973A; CN103534973B

Abstract

Disclosed are a method, a device and a system for reducing confirmation packets at a transmission control layer, which relate to the field of communications, and solve the problem that confirmation packets sent by a receiving end in wireless communication occupy a lot of air interface resources and cause interference for other communication data. The solution provided by the present invention comprises: receiving a data packet and a sending end checksum sent by a sending end, wherein the sending end checksum is generated by the sending end according to the data packet; generating a receiving end checksum according to the received data packet; transmitting the data packet to a transmission control layer of the receiving end when it is determined that the sending end checksum is the same as the receiving end checksum; returning a data reception acknowledgment to the sending end; when a transmission control layer acknowledgment packet sent by the transmission control layer of the receiving end is received, discarding the transmission control layer acknowledgment packet. The present invention is mainly applicable to network communications systems.

Description

Method, device and system for reducing transmission control layer confirmation message

The present invention relates to the field of communications, and in particular, to a method, apparatus, and system for reducing a transmission control layer acknowledgement message. Background technique

In the process of data wireless transmission, the network side and the user side generally follow the five-layer model of data transmission, namely, application layer, Transmission Control Protocol (TCP) layer, network layer, and wireless link control (Radio l ink Contro). l, RLC) layer and physical (Phys ica l, PHY) layer. When the network side sends data to the user side, the data starts from the application layer on the network side, after the transmission control layer, the network layer, the radio link control layer, and the physical layer on the network side, and then passes through the transmission link to the physical layer on the user side. And via the radio link control layer and the network layer on the user side, and finally to the application layer on the user side. vice versa.

In order to avoid data loss or data error during transmission, a receiving data confirmation mechanism is introduced in the above data transmission process. After the sender sends the data once, the second party sends the second information only after waiting for the confirmation information returned by the receiver. Secondary data.

In general, the transmitted data will undergo two detections. After the current terminal receives the data of other terminals, the physical layer first checks the received data through the checksum. The so-called checksum is a value converted into a received data according to the verification algorithm, and is used to detect whether the data is lost or damaged during the transmission. When the check is correct, the physical layer of the current terminal sends the detection result to the wireless link control layer, and the radio link control layer sends the data to the upper layer transmission control layer, and the transmission control layer performs the second detection on the data.

For example, after receiving the data ABC sent by the upper layer, the network side radio link control layer sends the data to the physical layer on the network side, and the physical layer on the network side performs a check operation on the data ABC to obtain a network side checksum, and then Send the data ABC together with the network side checksum to the user side physical layer. The user side physical layer performs a check operation on the data ABC to obtain a user side checksum, and then compares the network side checksum and the user side checksum, and sends the data ABC and the comparison result to the upper layer to reach the user. Side transmission control layer. The user side transmission control layer detects the data according to the calculation method of the layer, generates an ACK (Acknowledgement) according to the detection result, and transmits the ACK back to the network side, and the network side transmission control layer determines to send according to the received ACK. The next data or resend the previous data.

In the process of implementing the above solution, at least the following technical problems exist:

The data receiver transmission control layer needs to reply a large number of ACKs, occupy a large number of air interface resources, and a large number of ACKs interfere with other communication data. Summary of the invention

Embodiments of the present invention provide a method, apparatus, and system for reducing transmission control layer acknowledgement, and in the process of data transmission, a receiver transmission control layer sends an acknowledgement message for each received data, occupying a large amount of The resources of the air interface, the technical problem of interference with other communication data.

To achieve the above objective, the embodiment of the present invention uses the following technical solution: In a first aspect, a method for reducing a transmission control layer acknowledgement packet is provided, including: receiving a data packet sent by a sender and a checksum of a sender; The sending end checksum is generated by the sending end according to the data packet; generating a receiving end checksum according to the received data packet; and determining the sending end checksum and the receiving end When the checksum is the same, the data packet is delivered to the transmission control layer of the receiving end; wherein, after receiving the data packet, the transmission control layer of the receiving end sends a transmission control layer acknowledgement message; and, when determining When the sender checksum is the same as the checksum of the receiver, sending a data reception confirmation to the sender, so that after the sender receives the data reception confirmation, constructing a transmission control layer acknowledgement packet at the sender And transmitting, by the sending end, the transmission control layer acknowledgement message to the transmission control layer of the sending end; and receiving the transmission control sent by the transmission control layer of the receiving end When the acknowledgment message, the acknowledgment packet transmission control layer is discarded, thereby reducing the number of transmission control layer acknowledgment packets. With reference to the first aspect, in a first possible implementation manner of the first aspect, the method further includes: When it is determined that the checksum of the sender is different from the checksum of the receiver, the data packet is discarded.

With reference to the first aspect, in a second possible implementation manner of the first aspect, when the receiving end is a user terminal, and the sending end is a network side, the data packet sent by the sending end and the sending end are sent. Before the method, the method further includes: the user terminal transmitting, to the network side, information about reducing transmission layer acknowledgment message capability, so that the network side determines the message capability information according to the reduced transmission control layer, and determines The user terminal has the ability to reduce the transmission control to an acknowledgement message.

With the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, before the sending the transmission control layer acknowledgement packet capability information to the network side, the method further includes: The user terminal receives the reduce transmission control layer acknowledgement message capability query message sent by the network side.

With reference to the second possible implementation manner or the third possible implementation manner of the first aspect, in a fourth possible implementation manner, after the transmission transmission layer acknowledgement packet capability information is sent to the network side, The method further includes: receiving a reduce transmission control layer acknowledgement message initiation message sent by the network side, so as to enable a function of reducing a transmission control layer acknowledgement message.

The second aspect provides a method for reducing a transmission control layer acknowledgement packet, including: receiving a data packet sent by a transmission control layer of a sender;

Generating a checksum of the sender according to the data packet sent by the transmission control layer of the sending end; sending the data packet and the checksum of the sender to the receiving end, so that the receiving end is received according to the received Generating, by the data packet, a checksum of the receiving end, and sending a data reception confirmation to the sending end when determining that the checksum of the sending end is the same as the checksum of the receiving end; Receiving, by the receiving end, a data receiving confirmation; the data receiving confirmation is returned by the receiving end to the sending end when the sending end checksum is the same as the receiving end checksum;

After receiving the data receiving acknowledgement, constructing a transmitting end transmission control layer acknowledgement message;

And transmitting, by the transmitting end, a transmission layer acknowledgement message to the transmission control layer of the transmitting end. With reference to the second aspect, in a first possible implementation manner of the second aspect, the method further includes: after the transmitting end transmission control layer acknowledgement message is delivered to the transmission control layer of the sending end, the sending The transmission control layer of the end continues to send other data messages in order.

With the second aspect, in a second possible implementation manner of the second aspect, after the data packet and the sending end checksum are sent to the receiving end, the method further includes:

When the data reception confirmation is not received within a preset waiting time, the transmission control layer of the transmitting end resends the data message.

With reference to the second aspect, in a third possible implementation manner of the second aspect, after receiving the data packet sent by the transmission control layer of the sending end, the method further includes:

When the data packet sent by the transmission control layer of the transmitting end is leaked, the data packet lacks feedback information; the data packet missing feedback information includes information of the leaked data packet; The text missing feedback information is sent to the transmission control layer of the sending end, so that the transmission control layer of the transmitting end sends the missed data packet according to the data message missing feedback information.

With reference to the second aspect, in a fourth possible implementation manner of the second aspect, when the receiving end is a user terminal, and the sending end is a network side, the data sent by the transmission control layer of the receiving end is sent. The method further includes:

Receiving, by the network side, the transmission control layer acknowledgement packet capability information sent by the user equipment, so that the network side determines, according to the reduced transmission control layer acknowledgement packet capability information, that the user terminal has the reduced transmission control The ability to confirm the essay. With the fourth possible implementation of the second aspect, in a fifth possible implementation manner of the second aspect, before the receiving the transmission control layer acknowledgement packet capability information sent by the user terminal, the method further The method includes: transmitting, to the user terminal, a message that reduces a transmission control layer acknowledgement message.

With the fourth possible implementation manner of the second aspect, or the fifth possible implementation manner, in a sixth possible implementation manner of the second aspect, the receiving the transmission control layer acknowledgement packet sent by the user terminal After the capability information, the method further includes: sending a reduce transmission control layer acknowledgement message start message to the user terminal, so that the user terminal starts to reduce the transmission control layer acknowledgement message.

The third aspect provides a receiving end, including: a receiving unit, configured to receive a data packet sent by the sending end and a sending end checksum; and the sending end checksum is used by the sending end according to the data packet Generate

a checksum generating unit, configured to generate a receiving end checksum according to the data packet received by the receiving unit;

a receiving end transmitting unit, configured to: when determining that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit, transmitting the data packet to a transmission control layer of the receiving end; After receiving the data packet, the transmission control layer of the receiving end sends a transmission control layer acknowledgement message;

a data confirmation sending unit, configured to return a data reception confirmation to the transmitting end when determining that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; After receiving the data receiving acknowledgement, constructing a transmitting end transmission control layer acknowledgement message and transmitting the sending end transmission control layer acknowledgement message to the transmission control layer of the transmitting end;

An acknowledgement packet discarding unit, configured to discard the transmission control layer acknowledgement packet when receiving the transmission control layer acknowledgement packet sent by the receiving end transmission control layer, thereby reducing the transmission control layer acknowledgement report The number of texts. With reference to the third aspect, in a first possible implementation manner of the third aspect, the receiving end further includes:

And a data packet discarding unit, configured to discard the data packet when it is determined that the checksum of the sender is different from the checksum of the receiver generated by the checksum generating unit.

With reference to the third aspect, in a second possible implementation manner of the third aspect, when the receiving end is a user terminal, and the sending end is a network side, the receiving end further includes: a capability information sending unit, Before the receiving unit receives the data packet sent by the sending end and the sending end checksum, sending, to the network side, the transmission transmission layer acknowledgement packet capability information, so that the network side reduces the transmission control layer according to the Confirming the message capability information, determining that the user terminal has the capability of reducing the transmission control to an acknowledgement message.

With the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the receiving unit is further configured to: send, by the capability information sending unit, the reduced transmission to the network side Before the control layer confirms the message capability information, it receives the reduce transmission control layer acknowledgement/information capability query message sent by the network side.

With the second or third possible implementation of the third aspect, in a fourth possible implementation manner of the third aspect, the receiving unit is further configured to: send, by the capability information sending unit, the network After the side transmission reduces the transmission control layer acknowledgement message capability information, it receives the reduce transmission control layer acknowledgement message initiation message sent by the network side, so as to enable the reduction of the transmission control layer acknowledgement message.

dagger.

A fourth aspect, a sending end, comprising: a data message receiving unit, configured to receive a data message sent by a transmission control layer of the sending end; a checksum generating unit, configured to receive, according to the data message receiving unit Receiving, by the data transmission packet sent by the transmission control layer, a sending end checksum; the sending unit, configured to send the data packet and the sending end checksum to the receiving end, so that the receiving end receives the data according to the receiving end The received data message generates a checksum of the receiving end, and when determining the Sending a data reception confirmation to the transmitting end when the sending end checksum is the same as the receiving end checksum; the data confirming receiving unit is configured to receive a data receiving acknowledgement returned by the receiving end; The receiving end returns to the sending end when the checksum of the sending end is the same as the checksum of the receiving end;

a confirmation message construction unit, configured to: after the data confirmation unit receives the data reception confirmation, construct a transmission end transmission control layer confirmation message;

The transmission control layer acknowledges that the message is delivered to the transmission control layer of the transmitting end.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the sending unit is further configured to: send, by the acknowledgement message delivery unit, the sending end transmission control layer acknowledgement message to the After the transmission control layer of the transmitting end, other data packets are continuously sent in order.

With reference to the fourth aspect, in a second possible implementation manner of the fourth aspect, the transmitting control layer of the sending end is further configured to resend the data when the data receiving acknowledgement is not received within a preset waiting time Data message.

With reference to the fourth aspect, in a third possible implementation manner of the fourth aspect, the confirmation message construction unit is further configured to:

With reference to the fourth aspect, in a fourth possible implementation manner of the fourth aspect, when the receiving end is a user terminal, and the sending end is a network side, the sending end further includes: a capability information receiving unit, Receiving the reduced transmission control layer acknowledgement message capability information sent by the user equipment, so that the network side confirms the packet capability information according to the reduced transmission control layer, Determining that the user terminal has the ability to reduce the transmission control layer acknowledgement.

With the fourth possible implementation of the fourth aspect, in a fifth possible implementation manner of the fourth aspect, the sending unit is further configured to: receive, by the capability information receiving unit, the reduction sent by the user terminal Before the transmission control layer confirms the message capability information, the transmission control layer acknowledgement capability query message is sent to the user terminal.

With reference to the fourth possible implementation manner of the fourth aspect, or the fifth possible implementation manner, in a sixth possible implementation manner of the fourth aspect, the sending unit is further configured to: in the capability information receiving unit After receiving the capability of reducing the transmission control layer acknowledgement message sent by the user terminal, sending a message to reduce the transmission control layer acknowledgement message to the user terminal, so that the user terminal starts to reduce the function of the transmission control layer to confirm the message .

The fifth aspect provides a receiving end, including: a receiver, configured to receive a data packet sent by the sending end and a sending end checksum; and the sending end checksum is used by the sending end according to the data packet Generate

a processor, configured to generate a receiving end checksum according to the received data packet, and when the sending end checksum is the same as the receiving end checksum, transmitting the data packet to the receiving end a transmission control layer; wherein, after receiving the data packet, the transmission control layer of the receiving end sends a transmission control layer acknowledgement message; the processor is further configured to receive a transmission control layer sent by the transmission control layer of the receiving end When the packet is acknowledged, the transmission control layer acknowledges the packet to be discarded, thereby reducing the number of transmission control layer acknowledgement packets;

a transmitter, configured to return a data reception confirmation to the sending end when the sending end checksum is the same as the receiving end checksum; and configured to send after the sending end receives the data receiving confirmation The end transmission control layer acknowledges the message and sends the sender transmission control layer acknowledgement message to the transmission control layer of the sender.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the processor is further configured to: when the sending end checksum is different from the receiving end checksum, Message loss Discard.

With reference to the fifth aspect, in a second possible implementation manner of the fifth aspect, when the receiving end is a user terminal, and the sending end is a network side, the transmitter is further configured to: in the receiver Before receiving the data packet sent by the sending end and the checksum of the sending end, sending, by the network side, the information about the acknowledgment message of the acknowledgment layer of the transmission control layer, so that the network side confirms the message capability information according to the reduced transmission control layer, Determining that the user terminal has the ability to reduce the transmission control to an acknowledgment message.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the receiver is further configured to: send, by the sender, the transmission control layer to the network side Before confirming the message capability information, receiving the reduce transmission control layer acknowledgement message capability query message sent by the network side.

With reference to the second possible implementation manner or the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the transmitter sends the reduced transmission control layer to the network side After confirming the message capability information, the device reduces the transmission control layer acknowledgement message start message sent by the network side, so as to enable the function of reducing the transmission control layer acknowledgement message.

The sixth aspect provides a transmitting end, including: a processor, configured to receive a data packet sent by a transmission control layer of the transmitting end; and generate a sending end checksum according to the data packet sent by the transmission control layer of the sending end a transmitter, configured to send the data packet and the sending end checksum to the receiving end, so that the receiving end generates a receiving end checksum according to the received data packet, and when determining When the sender checksum is the same as the checksum of the receiver, sending a data reception confirmation to the sender; the receiver is configured to receive a data reception confirmation returned by the receiver;

The processor is further configured to: after the receiver receives the data receiving acknowledgement, construct a transmitting end transmission control layer acknowledgement message; and transmit the transmission end control layer acknowledgement message to the transmitting end of the transmission control Floor. With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the transmitter is further configured to: at the processor, transmit, by the processor, the transmission control layer acknowledgement packet to the transmitting end After the control layer, other data packets continue to be sent in order.

With reference to the sixth aspect, in a second possible implementation manner of the sixth aspect, the transmitter is further configured to resend the data when the data receiving acknowledgement is not received within a preset waiting time Message.

In conjunction with the sixth aspect, in a third possible implementation manner of the sixth aspect, the processor is further configured to:

With reference to the sixth aspect, in a fourth possible implementation manner of the sixth aspect, when the receiving end is a user terminal, and the sending end is a network side, the receiver is further configured to:

Receiving the reduced transmission control layer acknowledgement message capability information sent by the user terminal, so that the network side determines, according to the reduced transmission control layer acknowledgement message capability information, that the user terminal has the transmission control layer acknowledgement packet reduced. Ability. With reference to the fourth possible implementation manner of the sixth aspect, in a fifth possible implementation manner of the sixth aspect, the transmitter is further configured to: receive, by the receiver, the reduced transmission control sent by the user terminal Before the layer confirms the packet capability information, the device sends a request message for reducing the transmission control layer acknowledgement message capability to the user terminal.

With reference to the fourth possible implementation manner of the sixth aspect, or the fifth possible implementation manner, in a sixth possible implementation manner of the sixth aspect, the transmitter is further configured to receive, at the receiver After the transmission control layer acknowledges the packet capability information sent by the user terminal, the user terminal is sent to the user terminal. The transmission reduction layer control acknowledgement message initiation message is sent, so that the user terminal turns on the function of reducing the transmission control layer acknowledgement message.

The seventh aspect provides a system for reducing a transmission control layer acknowledgement packet, including: a sending end, a receiving end, and an air interface; wherein: the sending end includes any one of the sending ends described in the fifth aspect; and the receiving end includes the sixth end Any one of the receiving ends; the air interface is configured to connect the sending end and the receiving end; and the air interface is an interface provided when the transmitting end and the receiving end perform a wireless connection. An embodiment of the present invention provides a method, an apparatus, and a system for reducing a transmission control layer acknowledgement message. On the one hand, a receiving end receives a data message sent by a transmitting end and a sender checksum; and according to the received data. And generating, by the receiving end, a checksum; when determining that the checksum of the sending end is the same as the checksum of the receiving end, transmitting the data packet to a transmission control layer of the receiving end; and returning data to the sending end Receiving the acknowledgement; when receiving the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end, discarding the transmission control layer acknowledgement packet. On the other hand, the transmitting end receives the data packet sent by the transmission control layer of the transmitting end; generates a sending end checksum according to the data packet sent by the transmission control layer of the sending end; and sends the data packet and the sending Sending a checksum to the receiving end; receiving a data receiving acknowledgement returned by the receiving end; constructing a transmitting end transmission control layer acknowledgement message; and transmitting the transmitting end transmission control layer acknowledgement message to the transmission control layer of the transmitting end . Through the foregoing solution, the acknowledgement message transmitted by the receiving end to the transmitting end can be reduced, and the problem that the acknowledgement message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic diagram of a sending end transmitting data to a receiving end in the prior art; 2 is a flow chart of a receiving end of a method for reducing a transmission control layer acknowledgement message according to Embodiment 1 of the present invention;

3 is a flow chart of a transmitting end of a method for reducing transmission control layer acknowledgement in the first embodiment of the present invention;

4 is a flow chart showing another method for reducing a transmission control layer to confirm a message in Embodiment 2 of the present invention;

FIG. 5 is a schematic diagram of another method for reducing transmission control layer confirmation in the second embodiment of the present invention; FIG.

6 is a flow chart of another transmitting end of a method for reducing transmission control layer confirmation in the second embodiment of the present invention;

7 is a block diagram of a receiving end in Embodiment 3 of the present invention;

8a is a block diagram of another receiving end in Embodiment 3 of the present invention;

8b is a block diagram of another receiving end in Embodiment 3 of the present invention;

9a is a block diagram of a transmitting end in Embodiment 3 of the present invention;

9b is a block diagram of another transmitting end in Embodiment 3 of the present invention;

10 is a block diagram of a receiving end in Embodiment 4 of the present invention;

11 is a block diagram of a transmitting end in Embodiment 4 of the present invention;

12 is a schematic diagram of a system for reducing transmission control layer acknowledgement in the fourth embodiment of the present invention;

FIG. 13 is a schematic diagram of determining, according to Embodiment 1 of the present invention, whether a user terminal has the capability of reducing a transmission control layer acknowledgement message.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the current network communication, the process of transmitting the data message to the receiving end by the transmitting end can refer to FIG. 1 . The transmission control layer of the transmitting end A sends the data packet to be transmitted to the radio link control layer of A, and the radio link control layer of A sends the data packet to the physical layer of A, and is based on the physical layer of A. After the data packet is generated, the data packet is sent to the remote receiving end B together with the corresponding checksum. The physical layer of B also generates a checksum according to the received data message, and then the radio link control layer of the upper layer of B physical layer determines whether the two checksums of the sender and the receiver are consistent. When the checksums are consistent, the radio link control layer of B continues to transmit the data message to the transmission control layer of B, and the transmission control layer of B generates an acknowledgement message after receiving the data packet, and the acknowledgement message is layer by layer. Pass to the physical layer of B and return to A. The physical layer of A uploads the received acknowledgement message sent by B layer by layer until it is transmitted to the transmission control layer of A. The transmission control layer of A decides to send the next data packet or according to the received acknowledgement message. Pass a data message. It can be seen from the above description that each time A sends a data message by the transmission control layer, it must wait until the transmission control layer of B returns an acknowledgement message before performing the subsequent steps. A large number of acknowledgment messages do not carry valid data and occupy a huge amount of air interface resources.

Example 1:

An embodiment of the present invention provides a method for reducing a transmission control layer acknowledgement packet. On the other hand, on the receiving end side, as shown in FIG. 2, the method provided in this embodiment includes the following steps:

1 01. Receive a data packet sent by the sender and a checksum of the sender; the checksum of the sender is generated by the sender according to the data packet. The data received by the receiving end consists of two parts, one part is the data message and the other part is the checksum generated according to the message. The so-called checksum is a value obtained by calculating a data message according to a predetermined check algorithm. Obviously, as long as no error or loss occurs during the transmission of the data message, the data packets before and after the transmission are calculated according to the same algorithm. The value calculated before the transmission and the value calculated after the transmission should be the same.

1 02. Generate a checksum of the receiving end according to the received data message.

1 03. When it is judged that the checksum of the sender is the same as the checksum of the receiver, the data packet is transmitted to the transmission control layer of the receiver. The transmission control layer of the receiving end receives the data packet, and generates a transmission control layer acknowledgement report. Text, and send to the lower layer.

When the sender checksum described in step 103 is the same as the receiver checksum, it can be determined that no error or loss occurs during the transmission of the data message.

1 04. Returning the data receiving confirmation to the transmitting end; after the transmitting end receives the data receiving confirmation, constructing the transmitting end transmission control layer acknowledgement message and transmitting the transmitting end transmission control layer acknowledgement message to the transmission control layer of the transmitting end.

The return data reception confirmation described in step 1 04 is an operation performed when the data message is checked according to the checksum and the data message is confirmed to be accurate.

When the transmission control layer acknowledgement packet sent by the transmission control layer of the receiving end is received, the transmission control layer acknowledges the packet. In the existing application scenario, after receiving the data packet from the sender, the transmission control layer of the receiver generates and sends a transmission control layer acknowledgement packet to the lower layer, so that the transmission control layer data acknowledgement is transmitted back to the sender, and the sender receives the data. After the transmission control layer confirms the message, the subsequent data transmission operation starts. In the embodiment of the present invention, after the step 104 returns a data reception confirmation to the transmitting end, the sending end sends a sending end transmission control layer acknowledgement message to the transmitting end control unit of the transmitting end, and the transmitting end transmission control layer confirms the message format. And the content is consistent with the transmission control layer acknowledgement message generated by the receiving end transmission control layer, and after receiving the transmission control layer acknowledgement message, the transmission control layer of the transmitting end performs a subsequent data transmission operation. In step 105, on the receiving end side, the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end is discarded, and is not transmitted back to the transmitting end.

With the cooperation of the steps 104 and 105, the transmission control layer acknowledgement message of the receiving end is not sent to the transmitting end, and the transmitting control layer of the transmitting end is provided with a transmitting end transmission control layer acknowledgement message (the transmitting end). The transmission control layer confirms that the message acts as a transmission control layer acknowledgement message, so that the transmission control layer of the transmitting end continues data transmission.

On the other hand, as shown in FIG. 3, on the transmitting end side, the method provided in this embodiment includes the following steps: 201. Receive a data packet sent by a transmission control layer of the sending end. After the connection between the sender and the receiver is established, the transmission control layer of the sender processes the data to be sent to generate a data packet, which is transmitted to the radio link control layer of the sender.

202. Generate a sender checksum according to the data packet sent by the transmission control layer of the sending end. After receiving the data packet, the radio link control layer of the sending end sends the data packet to the physical layer of the sending end. The physical layer of the sender performs a check calculation on the received data according to a predetermined check algorithm, and obtains a checksum of the sender.

203. Send the data packet and the sender checksum to the receiving end. The physical layer of the sender sends the data message and the sender checksum together to the physical layer of the receiver through the air interface.

204. Receive a data reception confirmation returned by the receiving end. The data reception confirmation is returned to the transmitting end by the receiving end when the checksum of the transmitting end is the same as the checksum of the receiving end.

After receiving the data packet and the checksum of the sender, the physical layer of the receiving end performs the check calculation on the data packet, and obtains the checksum of the receiver. Then, the checksum of the sender and the checksum of the receiver are performed. Comparing, and transmitting the data message and the result of the comparison between the sender checksum and the receiver checksum to the receiving end radio link control layer. After receiving the same information as the checksum of the receiving end, the receiving radio link control layer sends a data reception confirmation to the transmitting end radio link control layer. The data reception confirmation passes through the physical layer of the receiving end and the physical layer of the transmitting end, and finally reaches the wireless link control layer of the transmitting end.

205. Construct a transmission end layer transmission acknowledgement packet. After receiving the data reception confirmation, the radio link control layer of the transmitting end constructs the transmission end transmission control layer acknowledgement message. In the transmission control protocol, the transmission control layer of the transmitting end needs to receive the transmission control layer sent by the receiving end. After the transmission control layer confirms the essay, the new data is sent. In the foregoing step 105, the transmission control layer acknowledgement packet sent by the transmission control layer of the receiving end is discarded, and the transmitting end does not receive the transmission control layer acknowledgement packet sent by the transmission control layer of the receiving end. In this case, in order to enable the transmission control layer of the transmitting end to transmit new data, the transmitting end itself needs to construct a transmission control layer acknowledgement message, that is, the transmitting end transmission control layer acknowledgement message. The transmitting end transmission control layer confirms that the format and content of the message are consistent with the format and content of the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end.

206. Pass the transmission control layer acknowledgement>3⁄4 text to the transmission control layer of the transmitting end. After receiving the transmission control layer acknowledgement message, the transmission control layer of the transmitting end continues to send other data packets in sequence. The application scenario in the embodiment of the present invention may be that the network side sends the data packet to the user terminal as the sending end, and the user terminal serves as the receiving end; or the user terminal sends the data packet to the network side as the sending end, and the network side receives the data packet. end. An embodiment of the present invention provides a method for reducing a transmission control layer acknowledgement message. On one hand, the receiving end receives a data packet sent by the transmitting end and a checksum of the transmitting end, and generates a receiving end check according to the received data packet. And; when it is judged that the checksum of the sender is the same as the checksum of the receiver, the data message is transmitted to the transmission control layer of the receiver, and the data reception acknowledgement is returned to the sender; when the transmission sent by the transmission control layer of the receiver is received When the control layer acknowledges the packet, it discards the transmission control layer acknowledgement packet. On the other hand, the transmitting end receives the data message sent by the transmission control layer of the transmitting end; generates a sending end checksum according to the data message sent by the transmission control layer of the transmitting end; sends the data message and the sending end checksum to the receiving end Receiving a data receiving acknowledgement returned by the receiving end; constructing a transmitting end transmission control layer acknowledgement message; and transmitting the transmitting end transmission control layer acknowledgement message to the transmission control layer of the transmitting end. Through the above solution, the problem that the acknowledgement message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved. Embodiment 2 An embodiment of the present invention provides a method for reducing a transmission control layer acknowledgement message, on the one hand, As shown in FIG. 4, the method provided in this embodiment includes the following steps:

301. The radio link control layer at the transmitting end receives the data packet sent by the transmission control layer of the transmitting end.

302. The radio link control layer at the transmitting end transmits the data packet to the physical layer of the sending end.

303. The physical layer of the sending end generates a sending end checksum according to the data packet sent by the transmission control layer of the sending end.

304. Send the data packet and the sender checksum to the receiving end.

305. The physical layer of the receiving end generates a checksum of the receiving end according to the received data packet, and determines whether the checksum of the sending end is the same as the checksum of the receiving end, and then checks the data packet and the sending end with the receiving end. Whether the checksum is the same information is passed to the radio link control layer of the receiving end.

306 and 310 are respectively performed according to the judgment results.

306. After receiving the data packet and the sender checksum sent by the physical layer of the receiving end and the checksum of the receiving end, the radio link control layer of the receiving end transmits the data packet to the transmission control layer of the receiving end. When the checksum of the sender is the same as the checksum of the receiver, it indicates that there is no error or partial loss of the data packet during the transmission from the sender to the receiver.

307. The radio link control layer at the receiving end returns a data reception confirmation to the radio link control layer at the transmitting end.

When the radio link control layer at the receiving end receives the data packet and the same information as the checksum of the sender sent by the physical layer of the receiving end, the radio link control layer transmits the data packet to the transmission control layer of the receiving end. A data reception acknowledgment is also returned, which is finally passed to the radio link control layer of the sender.

It should be noted that, in the actual scenario, the sequence of step 306 and step 307 can be reversed. In addition, after step 307, the transmission control layer of the receiving end will connect after receiving the data packet. The receiving radio layer control layer sends a transmission control layer acknowledgement message. In the prior art, the transmission control layer acknowledges that the message is returned to the transmission control layer of the sender. In the embodiment of the present invention, the radio link control layer of the receiving end discards the transmission control layer acknowledgement packet.

308. After receiving the data receiving acknowledgement, the radio link control layer of the transmitting end constructs the transmitting end transmission control layer acknowledgement packet.

309. The radio link control layer of the sending end sends the sending end transmission control layer acknowledgement message to the transmission control layer of the transmitting end. After receiving the transmission control layer acknowledgement message, the transmission control layer of the transmitting end will continue to perform data transmission. The transmitting end transmission control layer confirms that the format and content of the message are consistent with the transmission control layer acknowledgement message generated by the transmission control layer of the receiving end, and it can be seen that the transmission control layer acknowledges that the role of the packet is equivalent to the transmission sent by the transmission control layer of the receiving end. The control layer acknowledges the message. Since the transmission control layer acknowledges that the message is discarded by the radio link control layer of the receiving end, in step 309, the radio link control layer of the transmitting end constructs a transmitting end transmission control layer acknowledgement message and sends it to the transmission control layer of the transmitting end for transmission. The transmission control layer of the terminal continues to perform data transmission.

310. When the radio link control layer of the receiving end receives the sending end check sent by the physical layer of the receiving end and the information different from the checksum of the receiving end, the data packet is discarded. When the checksum of the sender is different from the checksum of the receiver, it indicates that the data packet is incorrect or partially lost during transmission. When the receiving end of the radio link layer receives the data packet, the checksum of the receiving end, and the checksum of the transmitting end, the data packet is discarded, and the data receiving acknowledgement is not returned to the transmitting end.

311. When the data receiving acknowledgement is not received within the preset waiting time, the transmission control layer of the sending end resends the data packet.

When the receiving end wireless link layer receives the data packet, the receiving end checksum, and the sender checksum are different, the data packet is discarded, and the data receiving acknowledgement is not returned to the transmitting end. The sender does not receive the data reception acknowledgement, and thus does not construct the sender transmission control layer acknowledgement message. The transmission control layer does not send new data because it does not receive the transmission control layer acknowledgement message. In the transmission control protocol, the transmission control layer does not receive the transmission control layer acknowledgement packet after a certain period of time, that is, the transmitted data packet is considered to be lost, and the data packet is resent.

The above steps 301 to 311 will be described in detail below with reference to FIG. 5 as a schematic diagram. The network side is used as the transmitting end, and the user terminal is used as the receiving end. According to the above steps: 301, the radio link control layer on the network side receives the data packet sent by the transmission control layer on the network side; 302, the radio link control layer on the network side transmits the data to the physical layer on the network side. 303, the physical layer on the network side generates a network side checksum according to the data packet sent by the transmission control layer on the network side; 304, sends the data packet and the network side checksum to the user terminal; 305, the user terminal The physical layer generates a user terminal checksum according to the received data packet, and determines whether the network side checksum is the same as the user terminal checksum, and then checks the data packet and the sender checksum with the receiving end checksum. Whether the same information is transmitted to the radio link control layer of the receiving end; 306 and 310 are respectively performed according to the judgment result; 306, when the radio link control layer of the user terminal receives the data packet and the transmitting end of the physical layer of the user terminal After verifying the same information as the checksum of the receiving end, transmitting the data message to the transmission control layer of the user terminal; 307, the radio link control layer of the user terminal to the network The side of the radio link control layer returns a data reception confirmation; 308, after receiving the data reception confirmation, the radio link control layer on the network side constructs a network side transmission control layer acknowledgement message; 309, the radio link control layer on the network side The network side transmission control layer acknowledges that the message is sent to the transmission control layer on the network side; 310, when the radio link control layer of the user terminal receives the user terminal checksum sent by the physical layer of the user terminal is different from the network side checksum After the information is discarded, the data packet is discarded; 311. When the data reception acknowledgement is not received within the preset waiting time, the network side transmission control layer resends the data packet. It should be noted that the radio link control layer at the receiving end judges the correctness of the data by using the checksum, and then returns a data reception confirmation. The same checksum indicates that the data packet is correct from the transmitting end radio link control layer, the transmitting end physical layer, the air interface, and the receiving end radio link control layer. However, it is impossible to detect whether the data transmission in the process from the transmitting end transmission control layer to the transmitting end radio link control layer is lost. Therefore, it is necessary to detect the connection in the radio link control layer of the transmitting end. The data received is complete. Further, as shown in FIG. 6, in combination with another aspect of the embodiment of the present invention, the method provided by the embodiment further includes the following steps:

401. The radio link control layer of the sending end receives the data packet sent by the transmission control layer of the sending end.

402. When a data packet sent by the transmission control layer of the sending end is leaked, the data packet lacks feedback information; the missing information of the data packet includes information of the data packet that is missed.

403. Send the data message missing feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missed data message according to the data message missing feedback information.

For example, the feedback process of the data message lacking feedback information of the above 401 to 403 is as follows: The transmission control layer of the transmitting end divides the data ABCDEF into three packets of AB, CD, and EF, and respectively adds the sequence numbers to the three packets. 1, 2, 3. That is, the data in the No. 1 package is AB, the data in the No. 2 package is the CD, and the data in the No. 3 package is the EF. When the 2 packets are lost during the transmission process from the transmitting control layer to the transmitting end of the radio link control layer, the transmitting radio link control layer will only accept the No. 1 packet and the No. 3 packet. The specific process is: after receiving the first packet and the third packet, the packet is transmitted to the physical layer of the transmitting end, and the physical layer of the transmitting end generates a checksum of the transmitting end, and sends the checksum of the first packet and the third packet and the sending end to the receiving end. end. After receiving the data packet, the physical layer of the receiving end generates a checksum of the receiving end. After judging, it is considered that the checksum of the transmitting end is the same as the checksum of the receiving end, and then the checksum of the data packet and the sending end is verified by the receiving end. And the same information is sent to the radio link control layer of the receiving end; the receiving end radio link control layer sends back the data receiving acknowledgement after receiving the data message and the sender checksum and the checksum of the receiving end. After receiving the data reception confirmation, the receiving end radio link control layer starts constructing the transmitting end transmission control layer acknowledgement message. Since the sequence numbers of the No. 1 packet and the No. 3 packet are not consecutive, the transmitting end transmission control layer constructed by the transmitting end radio link control layer confirms that the packet contains the missing packet information. The transmitting end radio link control layer sends the transmission end control layer acknowledgement message including the missing packet information as the data packet missing feedback information to the transmitting end transmission control layer, and the transmitting end transmission control layer receives the transmitting end transmission. After the control layer confirms the >3⁄4 text, resend the No. 2 package. The transmission control layer acknowledges that the message has two formats, that is, the normal acknowledgement message ACK.

(Acknowledgement) and selection acknowledgement message SACK (Se lec t ion Acknowledgement). To illustrate the difference between the two, the data sent by the transmission control layer of the sender is ABCDEF, and the data CD is lost during the transmission. If the transmission control layer acknowledgement message received by the transmission control layer of the transmitting end is ACK, the transmitting end transmission control layer retransmits the data CDEF, that is, retransmits the lost data and all the data packets after the lost data; if the transmitting end transmission control layer receives When the transmission control layer confirms that the message is SACK, the data transmitted by the transmission control layer of the transmitting end is CD, that is, only the lost data is transmitted. In the embodiment of the present invention, in order to better support the SACK, when the connection between the sender and the receiver is established, each terminal is notified of whether the terminal has the capability of supporting the SACK function. If the support is enabled, the function is enabled, and then the implementation is performed. Each step.

Optionally, before the method shown in FIG. 4 is executed, determining whether the user terminal has the capability of reducing the transmission control to the acknowledgement packet, and enabling the user terminal to enable the user terminal when the user terminal has the capability of reducing the transmission control to the acknowledgement packet. ability. Specifically, when the receiving end is a user terminal and the sending end is a network side, the user terminal needs to have the capability of discarding the transmission control layer acknowledgement message generated by its own radio link control layer. The following description will be made with reference to Fig. 13.

1 301. The user terminal receives the transmission control layer acknowledgement packet capability query message sent by the network side.

1 302. The user terminal sends, to the network side, information about reducing the transmission control layer acknowledgement>3⁄4 document capability. After receiving the information about the reduced transmission control layer acknowledgement message capability, the network side can determine whether the user terminal has the capability of discarding the transmission control layer acknowledgement message generated by its own radio link control layer. In a specific application, the reduced transmission control layer acknowledgement message capability information may define a field or a bit, and the value of the field or the bit is different to indicate whether the user terminal has the transmission control generated by the radio link control layer that discards itself. The ability of the layer to confirm the message.

Step 1 301 is an optional step. When there is a step 1 301, the network side initiates a capability query to the user terminal; when there is no step 1 301 and only the step 1 302 exists, the user terminal actively reports the capability information to the network side. In addition, optionally, after step 1 302, there is still step 1 303.

1 303. The user terminal receives a decrease transmission control layer acknowledgement message start message sent by the network side. After receiving the reduced transmission control layer acknowledgement message start message, the user terminal starts the function of reducing the transmission control layer acknowledgement message.

Step 1 303 is optional. In addition to receiving the command on the network side, the user terminal can also open the function of reducing the transmission control layer to confirm the ^^ text. An embodiment of the present invention provides a method for reducing a transmission control layer acknowledgement message. On one hand, the receiving end receives a data packet sent by the transmitting end and a checksum of the transmitting end, and generates a receiving end check according to the received data packet. And; when it is judged that the checksum of the sender is the same as the checksum of the receiver, the data packet is transmitted to the transmission control layer of the receiving end; at the same time, the sent packet is discarded; the data receiving acknowledgement is returned to the transmitting end; When the transmission control layer acknowledges the packet from the transmission control layer at the receiving end, the transmission control layer acknowledges the packet. On the other hand, receiving a data packet sent by the transmission control layer of the transmitting end; generating a checksum of the transmitting end according to the data packet sent by the transmission control layer of the transmitting end; and transmitting the data packet and the checksum of the transmitting end to the receiving end; When the data receiving acknowledgement is not received within the preset waiting time, the transmission control layer of the transmitting end resends the data packet; when the data packet sent by the transmission control layer of the transmitting end is leaked, the data packet is missing the feedback information. Through the above solution, the problem that the acknowledgement message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved. Embodiment 3 An embodiment of the present invention provides a receiving end and a transmitting end. On the one hand, as shown in FIG. 7, the receiving end provided by the embodiment includes: a receiving unit 61, configured to receive data sent by the sending end. The message and the sender checksum; the sender checksum is generated by the sender according to the data message.

The checksum generating unit 62 is configured to generate a receiving end checksum according to the data packet received by the receiving unit 61. The receiving end transmitting unit 63 is configured to: when determining that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit 62, transmitting the data message to the transmission control layer of the receiving end. After receiving the data packet, the transmission control layer of the receiving end sends a transmission control layer acknowledgement message.

The data acknowledgement sending unit 64 is configured to return a data receiving acknowledgement to the transmitting end. After the transmitting end receives the data receiving acknowledgement, the transmitting end transmits the control layer acknowledgement packet and sends the sending end transmission control layer acknowledgement packet to the sending end. Transmission control layer.

The acknowledgement packet discarding unit 65 is configured to discard the transmission control layer acknowledgement packet when receiving the transmission control layer acknowledgement packet sent by the receiving end transmission control layer.

Further, in conjunction with an aspect of the embodiment, as shown in FIG. 8a, the receiving end further includes: a data packet discarding unit 66, configured to determine, when the sending end checksum and the checksum generating unit 62 receive the receiving When the checksums are different, the data packets are discarded.

In addition, when the receiving end is the user terminal and the sending end is the network side, the network side needs to determine in advance whether the user terminal has the capability of reducing the transmission control layer acknowledgement message. As shown in FIG. 8b, the receiving end further includes:

The capability information sending unit 67 is configured to send, after the receiving unit 61 receives the data packet sent by the transmitting end and the checksum of the sending end, the capability of reducing the transmission control layer acknowledgement message to the network side, so that the network side reduces the transmission control layer according to the The message capability information is confirmed, and it is determined that the user terminal has the capability of reducing transmission control to confirming the message.

Further, the receiving unit 61 is further configured to: before the capability information sending unit 67 sends the reduced transmission control layer acknowledgement message capability information to the network side, receive the reduce transmission control layer acknowledgement message capability query message sent by the network side.

Further, the receiving unit 61 is further configured to: after the capability information sending unit 67 sends the transmission control layer acknowledgement message capability information to the network side, receive the reduce transmission control layer acknowledgement message start message sent by the network side, so as to enable the reduced transmission The control layer confirms the function of the message.

The receiving unit 61 and the checksum generating unit 62 in the apparatus shown in FIG. 7 and FIG. 8a are in operation The physical layer of the receiving end; the receiving end transmitting unit 63, the data confirming transmitting unit 64, the acknowledgement packet discarding unit 65, and the data packet discarding unit 66 operate at the radio link control layer of the receiving end.

On the other hand, as shown in FIG. 9a, the sending end provided by this embodiment includes:

The data packet receiving unit 71 is configured to receive a data packet sent by the transmission control layer of the transmitting end. The checksum generating unit 72 is configured to generate a sender checksum according to the data packet sent by the transmission control layer received by the data message receiving unit 71.

The sending unit 73 is configured to send the data message and the sending end checksum to the receiving end, so that the receiving end generates the receiving end checksum according to the received data message, and when determining the sending end checksum and the receiving end When the checksum is the same, a data reception confirmation is sent to the sender.

The data confirmation receiving unit 74 is configured to receive a data reception confirmation returned by the receiving end; the data receiving confirmation is returned to the transmitting end by the receiving end when the transmitting end checksum is the same as the receiving end checksum.

The acknowledgement message construction unit 75 is configured to construct a transmission end transmission control layer acknowledgement message;

The acknowledgement message delivery unit 76 is configured to transmit the sender transmission control layer acknowledgement message constructed by the acknowledgement message construction unit 75 to the transmission control layer of the sender.

The sending unit 73 is further configured to continue to send other data messages in sequence after the acknowledgment message delivery unit 76 passes the sender transmission control layer acknowledgment message to the transmission control layer of the transmitting end.

Further, the acknowledgement message construction unit 75 is further configured to: when the data packet sent by the transmission control layer of the transmitting end is leaked, the data packet lacks feedback information; and the data message missing feedback information includes the leaked datagram. Information.

The acknowledgment message delivery unit 76 is further configured to send the data message missing feedback information to the transmission control layer of the transmitting end, so that the transmission control layer of the transmitting end sends the fading data message according to the data message missing feedback information.

In addition, when the receiving end is the user terminal and the sending end is the network side, the network side needs to determine in advance whether the user terminal has the capability of reducing the transmission control layer acknowledgement message. As shown in Figure 9b, the sender Also includes:

The capability information receiving unit 77 is configured to receive the information about the reduced transmission control layer acknowledgement message sent by the user equipment, so that the network side confirms the message capability information according to the reduced transmission control layer, and determines that the user terminal has the transmission control layer acknowledgement. Ability.

Further, the sending unit 73 is further configured to: before the capability information receiving unit 77 receives the reduced transmission control layer acknowledgement message capability information sent by the user terminal, send the reduce transmission control layer acknowledgement capability query message to the user terminal.

Further, the sending unit 73 is further configured to: after the capability information receiving unit 77 receives the reduced transmission control layer acknowledgement message capability information sent by the user terminal, send the reduce transmission control layer acknowledgement message start message to the user terminal, so that the user terminal is enabled. Reduce the transmission control layer to confirm the function of the message.

In the transmitting end of FIG. 9a, the data message receiving unit 71, the acknowledgement message constructing unit 75, the acknowledgement message transmitting unit 76 operates at the radio link control layer of the transmitting end; the checksum generating unit 72, the transmitting unit 73 The data acknowledgement receiving unit 74 operates at the physical layer of the transmitting end. An embodiment of the present invention provides a transmitting end and a receiving end. On one hand, the receiving end receives a data packet sent by the transmitting end and a checksum of the sending end; and generates a checksum of the receiving end according to the received data packet; When the checksum of the transmitting end is the same as the checksum of the receiving end, the data message is transmitted to the transmission control layer of the receiving end; the data receiving acknowledgement is returned to the transmitting end; and the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end is received. The transmission control layer acknowledges the packet. On the other hand, the transmitting end receives the data message sent by the transmission control layer of the transmitting end; generates a sending end checksum according to the data message sent by the transmission control layer of the transmitting end; sends the data message and the sending end checksum to the receiving end Receiving a data receiving acknowledgement returned by the receiving end; constructing a transmitting end transmission control layer acknowledgement message; and transmitting, by the transmitting end, the transmission control layer confirms that the "3⁄4 text is transmitted to the transmission control layer of the transmitting end. It is confirmed that the message occupies a large amount of air interface resources and interferes with other communication data. An embodiment of the present invention provides a receiving end and a transmitting end. On the one hand, as shown in FIG. 10, the receiving end provided by the embodiment includes:

The receiver 81 is configured to receive a data packet sent by the sender and a checksum of the sender; the sender verifies and is generated by the sender according to the data packet.

The processor 82 is configured to generate a checksum of the receiving end according to the received data packet, and when the checksum of the sending end is the same as the checksum of the receiving end, transmit the data packet to the transmission control layer of the receiving end; wherein, receiving After receiving the data packet, the transmitting control layer sends a transmission control layer acknowledgement message; the processor 82 is further configured to: when receiving the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end, the receiving end transmission control layer acknowledgement message The text is discarded, thereby reducing the number of transmission control layer acknowledgement messages.

The transmitter 83 is configured to: when the sending end checksum is the same as the receiving end checksum, returning a data receiving acknowledgement to the transmitting end; so that the transmitting end receives the data receiving acknowledgement, constructing the transmitting end transmission control layer confirmation text and The transmitting end transmission control layer acknowledges the message to the transmission control layer of the transmitting end.

Further, the processor 82 is further configured to discard the data packet when the checksum of the sender is different from the checksum of the receiver.

In addition, when the receiving end is a user terminal and the transmitting end is a network side, the transmitter 8 3 in the receiving end is further used for:

Before the receiver 81 receives the data packet sent by the sending end and the checksum of the sending end, the receiver 81 sends the information about the reduced transmission control layer acknowledgement message capability to the network side, so that the network side determines the packet capability information according to the reduced transmission control layer. The user terminal has the ability to reduce transmission control to acknowledgement messages.

The receiver 81 is further configured to: before the transmitter 83 sends the transmission control layer acknowledgement packet capability information to the network side, receive the reduce transmission control layer acknowledgement message capability query message sent by the network side.

The receiver 81 is further configured to: after the transmitter 83 sends the transmission control layer acknowledgement message capability information to the network side, receive the reduce transmission control layer acknowledgement message start message sent by the network side, so as to enable the decrease transmission control layer to confirm ^ The function of the text.

On the other hand, as shown in FIG. 11, the sending end provided by this embodiment includes: The processor 91 is configured to receive a data packet sent by the transmission control layer of the sending end, and generate a sending end checksum according to the data packet sent by the transmission control layer of the sending end.

The transmitter 92 is configured to send the data message and the sending end checksum to the receiving end, so that the receiving end generates the receiving end checksum according to the received data message, and when determining the sending end checksum and the receiving end When the checksum is the same, send a data reception confirmation to the sender.

The receiver 93 is configured to receive a data reception confirmation returned by the receiving end.

Further, the processor 91 is further configured to construct a transmission end transmission control layer acknowledgement message; and transmit the transmission end transmission control layer acknowledgement message to the transmission control layer of the transmitting end.

Further, the transmitter 92 is further configured to continue to send other data messages in sequence after the processor 91 transmits the transmission control layer confirmation message to the transmission control layer of the transmitting end.

Further, the transmitter 92 is further configured to resend the data packet when the data reception confirmation is not received within the preset waiting time.

Further, the processor 91 is further configured to: when the data packet sent by the transmission control layer of the transmitting end is leaked, constructing a data packet with missing feedback information; the data message missing feedback information includes the data packet that is leaked. information. And sending the data message missing feedback information to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the leaked data message according to the data message missing feedback information.

In addition, when the receiving end is the user terminal and the sending end is the network side, the receiver 93 is further configured to: receive the information about the reduced transmission control layer acknowledgement message sent by the user terminal, so that the network side confirms the message according to the reduced transmission control layer. The capability information determines that the user terminal has the capability of reducing the transmission control layer acknowledgement message.

Further, the transmitter 92 is further configured to: before the receiver 93 receives the information about the reduced transmission control layer acknowledgement message sent by the user terminal, send the reduce transmission control layer acknowledgement message capability query message to the user terminal.

The transmitter 92 is further configured to receive, at the receiver 93, the reduced transmission control layer sent by the user terminal. After the message capability information is acknowledged, the message that the transmission control layer acknowledgement message is started is sent to the user terminal, so that the user terminal can start the function of reducing the transmission control layer acknowledgement message. An embodiment of the present invention provides a receiving end and a transmitting end. On one hand, the receiving end receives a data packet sent by the transmitting end and a checksum of the sending end; and generates a checksum of the receiving end according to the received data packet; When the checksum of the transmitting end is the same as the checksum of the receiving end, the data message is transmitted to the transmission control layer of the receiving end; the data receiving acknowledgement is returned to the transmitting end; and the transmission control layer acknowledgement message sent by the transmission control layer of the receiving end is received. The transmission control layer acknowledges the packet. On the other hand, the transmitting end receives the data packet sent by the transmission control layer of the transmitting end; generates a checksum of the transmitting end according to the data packet sent by the transmission control layer of the transmitting end; and sends the data packet and the checksum of the transmitting end to the receiving end Receiving the data reception confirmation returned by the receiving end; constructing the transmission end transmission control layer confirmation message; transmitting the transmission end transmission control layer confirmation message to the transmission control layer of the transmitting end. Through the above solution, the problem that the acknowledgement message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Further, an embodiment of the present invention provides a system for reducing a transmission control layer acknowledgement message. As shown in FIG. 12, the system includes: a transmitting end 1001, a receiving end 1002, and an air interface 1003. The transmitting end 1001 is the transmitting end shown in FIG. 11 in Embodiment 4 of the present invention. The receiving end 1002 is the receiving end shown in FIG. 10 in Embodiment 4 of the present invention. The air interface is used to connect the sender and the receiver. An embodiment of the present invention provides a system for reducing a transmission control layer acknowledgement message. On one hand, a receiving end receives a data packet sent by a transmitting end and a sending end checksum; and generates a receiving end check according to the received data packet. And; when judging that the checksum of the sender is the same as the checksum of the receiver, transmitting the data packet to the transmission control layer of the receiving end; returning the data receiving acknowledgement to the transmitting end; and receiving the transmission control layer sent by the receiving end When the transmission control layer acknowledges the message, the transmission control layer acknowledges that the message is discarded. On the other hand, the transmitting end receives the data packet sent by the transmission control layer of the transmitting end; generates a sending end checksum according to the data packet sent by the transmission control layer of the transmitting end; and checks the data packet and the transmitting end. And transmitting to the receiving end; receiving the data receiving confirmation returned by the receiving end; constructing the transmitting end transmission control layer acknowledgement message; and transmitting the transmitting end transmission control layer acknowledgement message to the transmission control layer of the transmitting end. The sender and the receiver are connected through the air interface. Through the above solution, the problem that the acknowledgement message sent by the receiving end occupies a large amount of air interface resources and interferes with other communication data is solved.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Accordingly, the scope of the invention should be determined by the scope of the appended claims.

Claims

claims

1. A method for reducing transmission control layer acknowledgment messages, which is characterized in that it includes: receiving a data message sent by the sending end and a sending end checksum; the sending end checksum is determined by the sending end according to the The above data message is generated;

Generate a receiving end checksum according to the received data message;

When it is determined that the checksum of the sending end is the same as the checksum of the receiving end, the data message is transferred to the transmission control layer of the receiving end; wherein, after the transmission control layer of the receiving end receives the data message , send a transmission control layer confirmation message; and, when it is determined that the sender checksum is the same as the receiver checksum, send a data reception confirmation to the sender so that the sender can receive the After the data reception is confirmed, construct a transmission control layer confirmation message of the sending end and send the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end;

When receiving the transmission control layer confirmation message sent by the transmission control layer of the receiving end, the transmission control layer confirmation message is discarded.

2. The method according to claim 1, characterized in that, the method further includes: when it is determined that the sender checksum and the receiver checksum are different, discarding the data message .

3. The method according to claim 1, characterized in that, when the receiving end is a user terminal and the sending end is a network side, before receiving the data message sent by the sending end and the sending end checksum, The method further includes: the user terminal sending reduced transmission control layer acknowledgment message capability information to the network side, so that the network side determines that the user terminal has the capability information based on the reduced transmission control layer acknowledgment message capability information. The ability to reduce the transmission control into acknowledgment messages.

4. The method according to claim 3, characterized in that, before sending the reduced transmission control layer acknowledgment message capability information to the network side, the method further includes: The user terminal receives the reduced transmission control layer acknowledgment message capability query message sent by the network side.

5. The method according to claim 3 or 4, characterized in that, after sending the reduced transmission control layer acknowledgment message capability information to the network side, the method further includes:

Receive the reduction transmission control layer acknowledgment message initiation message sent by the network side in order to enable the function of reducing transmission control layer acknowledgment messages.

6. A method for reducing transmission control layer acknowledgment messages, which is characterized by including: receiving data messages sent by the transmission control layer of the sending end;

Generate a sending end checksum according to the data message sent by the transmission control layer of the sending end; send the data message and the sending end checksum to the receiving end, so that the receiving end can The data message generates a receiving end checksum, and when it is determined that the sending end checksum is the same as the receiving end checksum, a data reception confirmation is sent to the sending end;

Receive the data reception confirmation returned by the receiving end; The data reception confirmation is returned to the sending end by the receiving end when the sending end checksum is the same as the receiving end checksum;

After receiving the data reception confirmation, construct a sending end transmission control layer confirmation message;

The transmission control layer confirmation message of the sending end is delivered to the transmission control layer of the sending end.

7. The method according to claim 6, characterized in that, the method further includes: after transmitting the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end, the transmission control layer of the sending end Continue to send other data packets in sequence.

8. The method according to claim 6, characterized in that, after sending the data message and the sending end checksum to the receiving end, the method further includes:

When the data reception confirmation is not received within the preset waiting time, the transmission control layer of the sending end resends the data message.

9. The method according to claim 6, characterized in that: when receiving the transmission control of the sending end After the data message sent by the control layer, it also includes:

When the data packet sent by the transmission control layer of the sending end is missed, data packet missing feedback information is constructed; the data packet missing feedback information includes information about the missed data packet;

The data packet missing feedback information is sent to the transmission control layer of the sending end, so that the transmission control layer of the sending end sends the missed data packet according to the data packet missing feedback information.

10. The method according to claim 6, characterized in that, when the receiving end is a user terminal and the sending end is a network side, before receiving the data message sent by the transmission control layer of the sending end, the method Also includes:

The network side receives the reduction transmission control layer acknowledgment message capability information sent by the user terminal, so that the network side determines that the user terminal has the capability to reduce the transmission control layer acknowledgment message based on the reduction transmission control layer acknowledgment message capability information. The ability of the layer to confirm the message.

11. The method according to claim 10, characterized in that, before receiving the reduced transmission control layer confirmation text capability information sent by the user terminal, the method further includes:

Send a reduced transmission control layer confirmation text capability query message to the user terminal.

12. The method according to claim 10 or 11, characterized in that, after receiving the reduced transmission control layer confirmation text capability information sent by the user terminal, the method further includes:

Send a reduction transmission control layer acknowledgment message activation message to the user terminal, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages.

13. A receiving end, characterized in that it includes: a receiving unit, configured to receive a data message sent by the sending end and a sending end checksum; the sending end checksum is determined by the sending end according to the datagram text generation;

A checksum generation unit, configured to generate a receiving end checksum according to the data message received by the receiving unit; The receiving end transfer unit is configured to transfer the data message to the transmission control layer of the receiving end when it is determined that the sending end checksum is the same as the receiving end checksum generated by the checksum generating unit; wherein, After the transmission control layer of the receiving end receives the data message, it sends a transmission control layer confirmation message; a data confirmation sending unit is used to determine the receiving end checksum and the checksum generating unit. When the checksums at both ends are the same, a data reception confirmation is returned to the sending end; so that after the sending end receives the data reception confirmation, it constructs a sending end transmission control layer confirmation message and sends the sending end transmission control layer confirmation The message is sent to the transmission control layer of the sending end;

The acknowledgment message discarding unit is configured to discard the transmission control layer acknowledgment message when receiving the transmission control layer acknowledgment message sent by the transmission control layer at the receiving end.

14. The receiving end according to claim 13, characterized in that, the receiving end further includes: a data message discarding unit, used to determine whether the sending end checksum and the checksum generating unit When the generated checksums at the receiving end are different, the data message is discarded.

15. The receiving end according to claim 13, characterized in that when the receiving end is a user terminal and the sending end is a network side, the receiving end further includes: a capability information sending unit, configured to Before receiving the data message sent by the sending end and the checksum of the sending end, the receiving unit sends the reduced transmission control layer acknowledgment message capability information to the network side, so that the network side can receive the reduced transmission control layer acknowledgment message according to the reduced transmission control layer acknowledgment message. message capability information to determine that the user terminal has the ability to reduce the transmission control into an acknowledgment message.

16. The receiving end according to claim 15, wherein the receiving unit is further configured to: before the capability information sending unit sends the reduced transmission control layer acknowledgment message capability information to the network side, receive all Describes the reduced transmission control layer acknowledgment message capability query message sent by the network side.

17. The receiving end according to claim 15 or 16, wherein the receiving unit is further configured to: after the capability information sending unit sends the reduced transmission control layer acknowledgment message capability information to the network side, Receive the reduction transmission control layer acknowledgment message start message sent by the network side, so as to enable the function of reducing transmission control layer acknowledgment message.

18. A sending end, characterized in that it includes: a data message receiving unit, used to receive data messages sent by the transmission control layer of the sending end; a checksum generating unit, used to receive according to the data message receiving unit The data message sent by the transmission control layer generates a sending end checksum;

A sending unit, configured to send the data message and the sending end checksum to the receiving end, so that the receiving end generates a receiving end checksum based on the received data message, and when judging the When the checksum at the sending end is the same as the checksum at the receiving end, send a data reception confirmation to the sending end;

A data confirmation receiving unit, configured to receive a data reception confirmation returned by the receiving end; the data reception confirmation is returned to the sending end by the receiving end when the sending end checksum is the same as the receiving end checksum. ;

A confirmation message construction unit, configured to construct a sending end transmission control layer confirmation message after the data confirmation unit receives the data reception confirmation;

The control layer confirmation message is delivered to the transmission control layer of the sending end.

19. The sending end according to claim 18, wherein the sending unit is further configured to: in the confirmation message delivery unit, transfer the transmission control layer confirmation message of the sending end to the transmission end of the sending end. After the control layer, continue to send other data messages in sequence.

20. The sending end according to claim 18, wherein the transmission control layer of the sending end is also configured to resend the datagram when the data reception confirmation is not received within a preset waiting time. arts.

21. The sending end according to claim 18, characterized in that, the confirmation message construction unit is also used to construct a missing data message when the data message sent by the transmission control layer of the sending end is missed. Feedback information; The data packet missing feedback information includes information about the missed data packet;

The transmission control layer of the sending end, so that the transmission control layer of the sending end provides feedback according to the lack of the data message. The information sends the missed data packet.

22. The sending end according to claim 18, characterized in that when the receiving end is a user terminal and the sending end is a network side, the sending end further includes: a capability information receiving unit, configured to receive all The reduced transmission control layer acknowledgment message capability information sent by the user terminal is used, so that the network side determines that the user terminal has the ability to reduce the transmission control layer acknowledgment message based on the reduced transmission control layer acknowledgment message capability information. ability.

23. The sending end according to claim 22, wherein the sending unit is further configured to: before the capability information receiving unit receives the reduced transmission control layer acknowledgment message capability information sent by the user terminal, The user terminal sends a reduced transmission control layer confirmation and text capability query message.

24. The sending end according to claim 22 or 23, characterized in that the sending unit is further configured to: after the capability information receiving unit receives the reduced transmission control layer confirmation message capability information sent by the user terminal , sending a reduction transmission control layer acknowledgment message activation message to the user terminal, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages.

25. A receiving end, characterized in that it includes: a receiver, configured to receive a data message sent by the sending end and a sending end checksum; the sending end checksum is determined by the sending end according to the datagram text generation; processor, configured to generate a receiving end checksum according to the received data message, and when the sending end checksum is the same as the receiving end checksum, transfer the data message to the transmission control layer of the receiving end; wherein, after receiving the data message, the transmission control layer of the receiving end sends a transmission control layer confirmation message; the processor is also configured to receive a transmission control layer confirmation message sent by the receiving end. When transmitting the control layer acknowledgment message, discard the transmission control layer acknowledgment message; The transmitter is used to return to the sending end when the sending end checksum is the same as the receiving end checksum. Data reception confirmation; so that after the sending end receives the data reception confirmation, the sending end transmission control layer confirmation message is constructed and the sending end transmission control layer confirmation message is sent to the transmission control layer of the sending end.

26. The receiving end according to claim 25, wherein the processor is further configured to discard the data message when the sending end checksum is different from the receiving end checksum. abandoned.

27. The receiving end according to claim 25, wherein when the receiving end is a user terminal and the sending end is a network side, the transmitter is further configured to: receive the sending end at the receiver. Before the outgoing data message is checked with the sending end, the reduced transmission control layer acknowledgment message capability information is sent to the network side, so that the network side determines the reduced transmission control layer acknowledgment message capability information based on the The user terminal has the ability to reduce the transmission control into an acknowledgment message.

28. The receiving end according to claim 27, characterized in that, the receiver is further configured to, before the sender sends the reduced transmission control layer acknowledgment message capability information to the network side, receive the network The reduction transmission control layer acknowledgment and text capability query message sent by the side.

29. The receiving end according to claim 27 or 28, characterized in that the receiver is further configured to: after the sender sends the reduced transmission control layer acknowledgment message capability information to the network side, receive all Describes the reduction transmission control layer acknowledgment message initiation message sent by the network side in order to enable the function of reducing transmission control layer acknowledgment messages.

30. A sending end, characterized in that it includes: a processor, configured to receive a data message sent by the transmission control layer of the sending end; and generate a sending end check according to the data message sent by the transmission control layer of the sending end. and;

A transmitter, configured to send the data message and the sending end checksum to the receiving end, so that the receiving end generates the receiving end checksum based on the received data message, and when judging the When the checksum at the sending end is the same as the checksum at the receiving end, send a data reception confirmation to the sending end;

A receiver, configured to receive the data reception confirmation returned by the receiving end;

The processor is also configured to construct a transmission control layer confirmation message of the sending end after the receiver receives the data reception confirmation; and pass the transmission control layer confirmation message of the sending end to the transmission control of the sending end. layer.

31. The sending end according to claim 30, wherein the transmitter is further configured to: after the processor transmits the transmission control layer confirmation message of the sending end to the transmission control layer of the sending end , continue to send other data packets in sequence.

32. The sending end according to claim 30, characterized in that the sender is further configured to resend the data message when the data reception confirmation is not received within a preset waiting time.

33. The sending end according to claim 30, characterized in that the processor is further configured to: when the data message sent by the transmission control layer of the sending end is missed, construct missing data message feedback information ; The feedback information about missing data packets includes information about the missed data packets;

34. The sending end according to claim 30, characterized in that when the receiving end is a user terminal and the sending end is a network side, the receiver is also used to:

Receive the reduced transmission control layer acknowledgment message capability information sent by the user terminal, so that the network side determines that the user terminal has the ability to reduce the transmission control layer acknowledgment message based on the reduced transmission control layer acknowledgment message capability information. Ability.

35. The sending end according to claim 34, wherein the sender is further configured to: before the receiver receives the reduced transmission control layer acknowledgment message capability information sent by the user terminal, to the The user terminal sends a reduced transmission control layer acknowledgment text capability query message.

36. The transmitter according to claim 34 or 35, wherein the transmitter is further configured to: after the receiver receives the reduced transmission control layer confirmation message capability information sent by the user terminal, The user terminal sends a reduction transmission control layer acknowledgment message activation message, so that the user terminal enables the function of reducing transmission control layer acknowledgment messages.

37. A system for reducing the transmission of control layer acknowledgment messages, characterized by including: a sending end, a receiving end and an air interface; wherein: The sending end includes any one of the sending ends described in claims 25 to 29; the receiving end includes any one of the receiving ends described in claims 1 to 15; the air interface is used to connect the sending end and the receiving end; the air interface is an interface provided for wireless connection between the sending end and the receiving end.