WO2014040531A1 - System and Method for Adaptive Transmission Time Interval (TTI) Structure - Google Patents
System and Method for Adaptive Transmission Time Interval (TTI) Structure Download PDFInfo
- Publication number
- WO2014040531A1 WO2014040531A1 PCT/CN2013/083284 CN2013083284W WO2014040531A1 WO 2014040531 A1 WO2014040531 A1 WO 2014040531A1 CN 2013083284 W CN2013083284 W CN 2013083284W WO 2014040531 A1 WO2014040531 A1 WO 2014040531A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- data
- tti length
- tti
- ttis
- accordance
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- TTI Transmission Time Interval
- the present invention relates generally to wireless communications, and more
- TTIs transmission time intervals
- Modern wireless networks must support the communication of diverse traffic types (e.g., voice, data, etc.) having different latency requirements, while at the same time satisfying overall network/channel throughput requirements.
- the ability to satisfy these latency and throughput requirements is affected by, inter alia, wireless channel conditions and wireless channel parameters.
- a method of communicating data in a wireless channel comprises receiving a first data and a second data.
- the method further includes transporting the first data in transmission time intervals (TTIs) of the wireless channel having a first TTI length; and transporting the second data in TTIs of the wireless channel having a second TTI length that is different than the first TTI length.
- a transmitting device for performing this method is also provided.
- a device for receiving data transmitted in accordance with this method is also provided.
- another method for communicating data in a wireless channel includes receiving a first data destined for a receiving device, selecting a first TTI length for transporting the first data, and transmitting the first data in a first TTI of the wireless channel having the first TTI length.
- the method further includes receiving a second data destined for the receiving device, selecting a second TTI length for transporting the second data, and transmitting the second data in a second TTI of the wireless channel having the second TTI length.
- a transmitting device for performing this method is also provided.
- a device for receiving data transmitted in accordance with this method is also provided.
- FIG. 1 illustrates a diagram of an embodiment of a wireless communications network
- FIG. 2 illustrates a diagram of a prior art downlink channel carrying fixed-length TTIs
- FIG. 3 illustrates a diagram of an embodiment of a downlink channel carrying variable- length TTIs
- FIG. 4 illustrates a flowchart of an embodiment method for adapting TTI-lengths in a DL channel
- FIG. 5 illustrates a diagram of an embodiment for selecting TTI-lengths for transporting data in a DL channel
- FIG. 6 illustrates a protocol diagram of an embodiment communication sequence for adapting TTI-lengths in a DL channel
- FIG. 7 illustrates a flowchart of another embodiment method for adapting TTI-lengths in a DL channel
- FIG. 8 illustrates a protocol diagram of another embodiment communication sequence for adapting TTI-lengths in a DL channel
- FIG. 9 illustrates a diagram of another embodiment of a DL channel carrying variable- length TTIs
- FIG. 10 illustrates a diagram of an embodiment of a DL channel carrying TTIs have various lengths
- FIG. 11 illustrates a diagram of an embodiment of a DL channel carrying TTIs have various lengths
- FIG. 12 illustrates a block diagram of an embodiment of a communications device.
- Corresponding numerals and symbols in the different figures generally refer to corresponding parts unless otherwise indicated. The figures are drawn to clearly illustrate the relevant aspects of the preferred embodiments and are not necessarily drawn to scale.
- aspects of this disclosure provide mechanisms for adapting the length of transport containers in accordance with various parameters (e.g., latency requirements, buffer size, user mobility characteristics, etc.).
- transport containers may be referred to as TTIs, etc.
- the techniques and/or mechanisms discussed herein can be applied to non-LTE networks (e.g., any frequency division duplex and/or time division duplex communication systems).
- non-LTE networks e.g., any frequency division duplex and/or time division duplex communication systems.
- the principles described herein can also be applied to provide adaptive TTI structures in uplink communications, as well as other forms of wireless communications (e.g., device-to-device, etc).
- FIG. 1 illustrates a wireless network 100 comprising a cellular coverage area 101 within which an e B 110 provides wireless access to a plurality of UEs 115, 125.
- the e B 110 may provide wireless access by establishing a downlink communication channel (solid arrows) and an uplink communication channel (dotted arrows) with the UEs 115, 125.
- the wireless network 100 may operate in accordance with an LTE communication protocol.
- the downlink communication channel may carry data channels (e.g., physical downlink shared channel (PDSCH), etc.) and control channels (e.g., a physical downlink shared channels
- control channels may include UE/group specific control channels and common control channels that carry downlink control information to the UEs (and/or relays), as well as uplink (UL)-related control channels that carry various uplink control information to the UEs (e.g., hybrid automatic repeat request (HARQ), acknowledge/negative- acknowledge (ACK/NACK), UL grant etc.).
- HARQ hybrid automatic repeat request
- ACK/NACK acknowledge/negative- acknowledge
- UL grant e.g., UL grant etc.
- FIG. 2 illustrates a prior art DL channel 200 carrying a plurality of radio frames 210-220.
- TTIs in the radio frames 210-220 are fixed length, with each TTI carrying a common control channel, a group/UE-specific control channel, and UL-related control channels.
- FIG. 3 illustrates an embodiment of a DL channel 300 carrying a plurality of radio frames 310-320.
- the DL channel 300 carries variable-length TTIs.
- the periodicity of the common control channel is determined by the periodicity of the radio frames (e.g., one common control channel per radio-frame).
- the periodicity of the group/UE- specific control channel is determined by the periodicity of variable-length TTIs (e.g., one group/UE-specific control channel per TTI).
- including a group/UE-specific control channel in each TTI allows the eNB to dynamically schedule UEs to TTIs as often as the smallest length-TTI (i.e., as often as the atomic interval).
- the UL-related control channel is decoupled from the TTI structure, such that the periodicity of the UL-related control channel is independent from the length/periodicity of the variable-length TTIs.
- the TTI 311 carries one UL-related control channel
- the TTI 313 carries three UL-related control channels.
- some TTIs do not carry any UL-related control channels.
- the amount of control overhead in the DL channel 300 is variable, and depends on the periodicity of the UL-related control channel (e.g., as configured by the network administrator) as well as the periodicity of the group/UE specific control channel (e.g., as determined by the TTI-length configurations of the radio frames 310-320).
- FIG. 4 illustrates a flowchart of a method 400 for adapting TTI-lengths in a DL channel.
- the method 400 begins at step 410, where the eNB receives a first data destined for a first user. Thereafter, the method 400 proceeds to step 420, where the eNB receives a second data destined for a second user. The first data and the second data may be buffered in separate buffers of the eNB. Thereafter, the method 400 proceeds to step 430, where the eNB selects a first TTI-length for transporting the first data. This selection may be made in accordance with various selection criteria, including latency requirements, buffer size, mobility characteristics of the first user, etc.
- the method 400 proceeds to step 440, where the eNB selects a second TTI-length for transporting the second data.
- the method 400 proceeds to step 450, where the eNB transmits the first data in a first TTI having the first TTI-length.
- the method 400 proceeds to step 460, where the eNB transmits the second data in a second TTI having the second TTI- length.
- the first data and the second data may be transmitted in a common radio-frame.
- FIG. 5 illustrates a flowchart of a method 500 for selecting TTI-lengths for transporting data in a DL channel.
- the method 500 represents just one example for selecting TTI- lengths. Other examples that consider other factors and/or have more TTI-length designations may also be used to select TTI-lengths for data transmission.
- the method 500 begins at step 510, where the eNB determines whether the latency requirement of the data (e.g., whether the data requires low latency), which may be determined in accordance with the traffic type of the data. For instance, some traffic types (e.g., voice, mobile gaming, etc.) may require low levels of latency, while other traffic types (e.g., messaging, email, etc.) may have less stringent latency requirements.
- the latency requirement of the data e.g., whether the data requires low latency
- some traffic types e.g., voice, mobile gaming, etc.
- other traffic types e.g., messaging, email, etc.
- a short TTI-length 515 is selected to transport the data. If the data has a higher (i.e., less stringent) latency requirement, then the method 500 proceeds to step 520, where the eNB determines the buffer size used to store the data.
- the buffer size of the data is indicative of the amount of data that needs to be transported.
- longer TTI-lengths may provide higher throughput rates by minimizing overhead.
- large TTI-lengths may not be warranted when only small amounts of data need to be transported. For instance, if there is not enough data to fill the long TTI, then a medium TTI-length may be more efficient. If the data has a small buffer size, then a medium TTI-length 525 is selected. Otherwise, if the data has a large buffer size, then the method 500 proceeds to step 530. [0030] At step 530, the e B determines whether the user has a low, medium, high or very-high mobility characteristic.
- a user's mobility characteristic may correspond to a rate at which the user is moving. For instance, users that are moving at a higher rates of speed (e.g., a user communicating in a car) have higher mobility characteristics than users moving at comparatively lower rates of speed (e.g., a user walking through a park). Notably, a user's mobility
- wireless channel stability heavily influences the degree to which link adaptation can be improved through more frequent channel estimation opportunities. That is, users having moderate to high mobility characteristics may achieve improved bit-rates when using medium TTI-lengths (or even short TTI-lengths) due to enhanced link adaptation resulting from more frequent channel estimation opportunities. These higher bitrates may outweigh the overhead savings of long TTI-lengths, and consequently may increase overall throughput for those users.
- fast link adaptation capabilities may be less beneficial for stationary or slow moving users, as those users experience relatively stable channel conditions.
- low mobility users may derive higher throughput by exploiting the low-overhead nature of long TTI-lengths, rather than the faster link adaptation capabilities derived from medium or low TTI-lengths.
- users that have very high mobility characteristics e.g., users moving at very-high rates of speed
- very-high mobility users may achieve higher throughput from long TTI-lengths.
- the eNB selects a medium TTI- length for transporting the data (at step 530).
- the eNB selects a medium TTI-length for transporting the data (at step 530).
- degrees of mobility may be relative to the network conditions and/or capabilities of the wireless communication devices.
- FIG. 6 illustrates a protocol diagram for a communications sequence 600 for
- the communications sequence 600 begins when a first data (Data l) 610 and a second data (Data l) 615 destined for the UE1 115 and UE 125 (respectively) are communicated from the backhaul network 130 to the eNB 110.
- the eNB 110 determines which TTI-length to transport the Data l 610 and the Data l 615.
- the eNB 110 communicates the TTI-lengths by sending a TTI length configuration (Data l) message 620 and a TTI length configuration (Data_2) message 625 to the UEs 115 and 125 (respectively).
- the eNB 110 communicates the Data l 610 and the Data_2 620 via the DL data transmission (Data l) 630 and the DL data transmission (Data_2) 635.
- the DL data transmission (Data l) 630 and the DL data transmission (Data_2) 635 may be carried in different length TTIs of a common radio-frame.
- FIG. 7 illustrates a flowchart of a method 700 for adapting TTI-lengths in a DL channel.
- the method 700 begins at step 710, where the eNB receives a first data destined for a user. Thereafter, the method 700 proceeds to step 720, where the eNB selects a first TTI-length for transporting the first data. Thereafter, the method 700 proceeds to step 730, where the eNB transmits the first data in a first TTI having the first TTI-length. Next, the method 700 proceeds to step 740, where the eNB receives a second data destined for the same user. Thereafter, the method 700 proceeds to step 750, where the eNB selects a second TTI-length for transporting the second data.
- the second TTI-length may be different than the first TTI-length for various reasons. For instance, the first data and the second data may have different latency requirements and/or buffer sizes, and/or then user's mobility characteristics may have changed.
- the method 700 proceeds to step 760, where the eNB transmits the second data in a second TTI having the second TTI-length.
- FIG. 8 illustrates a protocol diagram for a communications sequence 800 for adapting the TTI-lengths used for carrying data to a common user.
- the communications sequence 800 begins when a Data l 810 destined for a UE 115 is communicated from the backhaul network 130 to the eNB 110.
- the eNB 110 selects a TTI-length for transporting the Data l 810, which the eNB 110 communicates to the UE 110 via the TTI length configuration (Data l) message 820. Thereafter, the eNB 110 communicates the Data l 810 in the DL data
- Data l transmission (Data l) 830.
- a Data_2 840 destined for a UE 115 is communicated from the backhaul network 130 to the eNB 110.
- the eNB 110 selects a TTI- length for transporting the Data_2 840, which the eNB 110 communicates to the UE 110 via the TTI length configuration (Data_2) message 850.
- the eNB 110 communicates the Data_2 840 in the DL data transmission (Data_2) 860.
- the DL data transmission (Data l) 830 and DL data transmission (Data_2) 860 may be carried in the TTIs having different TTI lengths.
- the DL data transmission (Data l) 830 and DL data transmission (Data_2) 860 may be communicated in the same, or different, radio frames.
- the TTI structure of radio frames may be adapted dynamically, such the TTI length configuration messages/indications are included in the Group/UE-specific control channel of each TTI.
- dynamically adapting the TTI structure of radio frames with such granularity may provide high degrees of flexibility with respect to TTI-length adaptation.
- the inclusion of additional control signaling in the UE/group specific control channel may significantly increase overhead in the radio frame, as the UE/group specific control channel is communicated relatively frequently (e.g., in each TTI).
- the TTI structure of radio frame may be adapted in a semi- static manner.
- FIG. 9 illustrates an embodiment of a DL channel 900 carrying a plurality of variable- length TTIs in a plurality of radio frames 910-920.
- the DL channel 900 may be somewhat similar to the DL channel 300, with the exception that the DL channel 900 carries the TTI length configuration messages/indications in the common control channel, rather than the UE-Group specific control channels. This may reduce the overhead attributable to TTI-length adaptation when high-frequency adaptation is unnecessary.
- different TTI-lengths may occupy different portions of the DL channel 900 through bandwidth partitioning. Such bandwidth partitioning may depend on the amount of UEs configured for a particular TTI length.
- the bandwidth occupied by the short TTI-length may be twice the amount of bandwidth occupied by the medium-TTI length.
- a further alternative for reducing overhead is to perform TTI-length adaptation in radio frames that have a static TTI structure.
- radio frames having a static structure comprise a variety of TTI-lengths with which to schedule users, but the ratio and placement of TTIs is fixed such that TTI-length does not change from one radio frame to another.
- FIG. 10 illustrates a downlink channel 1000 for communicating radio frames 1010-1020 having a static TTI structure.
- the radio frame 1010 and 1020 have identical TTI structures such that the placement/ratio of the short, medium, and long TTIs does not change from one radio frame to another.
- TTI-length adaptation is accomplished in the downlink channel 1000 through selective scheduling (e.g., scheduling users to different TTI-lengths), rather than by adapting the TTI structure of the radio frames 1010-1020.
- TTI-length adaptation can be achieved via carrier aggregation.
- FIG. 11 illustrates a downlink channel 1000 for achieving TTI-length adaptation via carrier aggregation. As shown, mid-length TTIs are carried in the frequency band 1110, short-length TTIs are carried in the frequency band 1120, and long-length TTIs are carried in the frequency band 1130.
- TTI- length adaptation is accomplished in the downlink channel 1100 through selective scheduling (e.g., scheduling users to different TTI-lengths).
- FIG. 12 illustrates a block diagram of an embodiment of a communications device 1200, which may be implemented as one or more devices (e.g., UEs, eNBs, etc.) discussed above.
- the communications device 1200 may include a processor 1204, a memory 1206, a cellular interface 1210, a supplemental wireless interface 1212, and a supplemental interface 1214, which may (or may not) be arranged as shown in FIG. 12.
- the processor 1204 may be any component capable of performing computations and/or other processing related tasks
- the memory 1206 may be any component (volatile, non-volatile, or otherwise) capable of storing programming and/or instructions for the processor 1204.
- the memory 1206 is non-transitory.
- the cellular interface 1210 may be any component or collection of components that allows the communications device 1200 to communicate using a cellular signal, and may be used to receive and/or transmit information over a cellular connection of a cellular network.
- the supplemental wireless interface 1212 may be any component or collection of components that allows the communications device 1200 to communicate via a non-cellular wireless protocol, such as a Wi- Fi or Bluetooth protocol, or a control protocol.
- the supplemental interface 1214 may be any component or collection of components that allows the communications device 1200 to communicate via a supplemental protocol, including wire-line protocols.
Abstract
Methods and devices are provided for communicating data in a wireless channel. In one example, a method includes adapting the transmission time interval (TTI) length of transport container for transmitting data in accordance with a criteria. The criteria may include (but is not limited to) a latency requirement of the data, a buffer size associated with the data, a mobility characteristic of a device that will receive the data. The TTI lengths may be manipulated for a variety of reasons, such as for reducing overhead, satisfy quality of service (QoS) requirements, maximize network throughput, etc. In some embodiments, TTIs having different TTI lengths may be carried in a common radio frame. In other embodiments, the wireless channel may partitioned into multiple bands each of which carrying (exclusively or otherwise) TTIs having a certain TTI length.
Description
System and Method for Adaptive Transmission Time Interval (TTI) Structure
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims the benefit of U.S. Patent Application No. 13/ 611,823 filed September 12, 2012 and entitled " System and Method for Adaptive Transmission Time Interval (TTI) Structure", which is incorporated herein by reference as if reproduced in its entirety.
FIELD OF INVENTION
[0002] The present invention relates generally to wireless communications, and more
specifically, to a system and method for adapting the length of transmission time intervals (TTIs).
BACKGROUND
[0003] Modern wireless networks must support the communication of diverse traffic types (e.g., voice, data, etc.) having different latency requirements, while at the same time satisfying overall network/channel throughput requirements. The ability to satisfy these latency and throughput requirements is affected by, inter alia, wireless channel conditions and wireless channel parameters. One wireless channel parameter that significantly affects both latency and
throughput performance is the size (or length) of the transport containers used to carry the traffic. Conventional networks use a single, fixed-length, transport container, and are therefore limited in their ability to adapt to changes in wireless channel conditions, usage, etc.
SUMMARY
[0004] Technical advantages are generally achieved by embodiments of the present invention which adapt the length of downlink transmission time intervals (TTIs) in downlink radio frames to satisfy latency and/or throughput performance.
[0005] In accordance with an embodiment, a method of communicating data in a wireless channel is provided. In this example, the method comprises receiving a first data and a second data. The method further includes transporting the first data in transmission time intervals (TTIs) of the wireless channel having a first TTI length; and transporting the second data in TTIs of the wireless channel having a second TTI length that is different than the first TTI length. A transmitting device for performing this method is also provided. A device for receiving data transmitted in accordance with this method is also provided.
[0006] In accordance with another embodiment, another method for communicating data in a wireless channel is provided. In this example, the method includes receiving a first data destined for a receiving device, selecting a first TTI length for transporting the first data, and transmitting the first data in a first TTI of the wireless channel having the first TTI length. The method further includes receiving a second data destined for the receiving device, selecting a second TTI length for transporting the second data, and transmitting the second data in a second TTI of the wireless channel having the second TTI length. A transmitting device for performing this method is also provided. A device for receiving data transmitted in accordance with this method is also provided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] For a more complete understanding of the present invention, and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which:
[0008] FIG. 1 illustrates a diagram of an embodiment of a wireless communications network;
[0009] FIG. 2 illustrates a diagram of a prior art downlink channel carrying fixed-length TTIs;
[0010] FIG. 3 illustrates a diagram of an embodiment of a downlink channel carrying variable- length TTIs;
[0011] FIG. 4 illustrates a flowchart of an embodiment method for adapting TTI-lengths in a DL channel;
[0012] FIG. 5 illustrates a diagram of an embodiment for selecting TTI-lengths for transporting data in a DL channel;
[0013] FIG. 6 illustrates a protocol diagram of an embodiment communication sequence for adapting TTI-lengths in a DL channel; and
[0014] FIG. 7 illustrates a flowchart of another embodiment method for adapting TTI-lengths in a DL channel;
[0015] FIG. 8 illustrates a protocol diagram of another embodiment communication sequence for adapting TTI-lengths in a DL channel;
[0016] FIG. 9 illustrates a diagram of another embodiment of a DL channel carrying variable- length TTIs;
[0017] FIG. 10 illustrates a diagram of an embodiment of a DL channel carrying TTIs have various lengths;
[0018] FIG. 11 illustrates a diagram of an embodiment of a DL channel carrying TTIs have various lengths; and
[0019] FIG. 12 illustrates a block diagram of an embodiment of a communications device.
[0020] Corresponding numerals and symbols in the different figures generally refer to corresponding parts unless otherwise indicated. The figures are drawn to clearly illustrate the relevant aspects of the preferred embodiments and are not necessarily drawn to scale.
DETAILED DESCRIPTION
[0021] The making and using of the presently preferred embodiments are discussed in detail below. It should be appreciated, however, that the present invention provides many applicable inventive concepts that can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the invention, and do not limit the scope of the invention.
[0022] Conventional wireless networks use fixed length transport containers. For instance, networks operating under the third generation partnership (3GGP) long term evolution (LTE) release eight (rel-8) telecommunication standards use one millisecond (ms) transmission time intervals (TTIs). The length of a transport container can significantly affect latency performance and throughput performance of the network. Specifically, shorter transport containers achieve superior latency performance by providing more frequent transmission opportunities, while longer transport containers achieve superior throughput performance by reducing signaling overhead. Hence, fixed length transport containers may be unable to satisfy latency
requirements and/or provide desired throughput performance under some network conditions. As such, mechanisms or techniques for varying transport container length are desired in order to achieve improved network performance.
[0023] Aspects of this disclosure provide mechanisms for adapting the length of transport containers in accordance with various parameters (e.g., latency requirements, buffer size, user mobility characteristics, etc.). Although much of this disclosure is presented in the context of
LTE (e.g., transport containers may be referred to as TTIs, etc.), the techniques and/or mechanisms discussed herein can be applied to non-LTE networks (e.g., any frequency division duplex and/or time division duplex communication systems). Although much of this disclosure are discussed in the context of downlink communications, the principles described herein can also be applied to provide adaptive TTI structures in uplink communications, as well as other forms of wireless communications (e.g., device-to-device, etc).
[0024] FIG. 1 illustrates a wireless network 100 comprising a cellular coverage area 101 within which an e B 110 provides wireless access to a plurality of UEs 115, 125. The e B 110 may provide wireless access by establishing a downlink communication channel (solid arrows) and an uplink communication channel (dotted arrows) with the UEs 115, 125. In an embodiment, the wireless network 100 may operate in accordance with an LTE communication protocol. The downlink communication channel may carry data channels (e.g., physical downlink shared channel (PDSCH), etc.) and control channels (e.g., a physical downlink shared channels
(PDCCH), etc.). More specifically, the control channels may include UE/group specific control channels and common control channels that carry downlink control information to the UEs (and/or relays), as well as uplink (UL)-related control channels that carry various uplink control information to the UEs (e.g., hybrid automatic repeat request (HARQ), acknowledge/negative- acknowledge (ACK/NACK), UL grant etc.).
[0025] FIG. 2 illustrates a prior art DL channel 200 carrying a plurality of radio frames 210-220. As shown, TTIs in the radio frames 210-220 are fixed length, with each TTI carrying a common control channel, a group/UE-specific control channel, and UL-related control channels.
[0026] FIG. 3 illustrates an embodiment of a DL channel 300 carrying a plurality of radio frames 310-320. Unlike the prior art DL channel 200, the DL channel 300 carries variable-length TTIs.
The periodicity of the common control channel is determined by the periodicity of the radio frames (e.g., one common control channel per radio-frame). The periodicity of the group/UE- specific control channel is determined by the periodicity of variable-length TTIs (e.g., one group/UE-specific control channel per TTI). Notably, including a group/UE-specific control channel in each TTI allows the eNB to dynamically schedule UEs to TTIs as often as the smallest length-TTI (i.e., as often as the atomic interval). Further, the UL-related control channel is decoupled from the TTI structure, such that the periodicity of the UL-related control channel is independent from the length/periodicity of the variable-length TTIs. For instance, the TTI 311 carries one UL-related control channel, while the TTI 313 carries three UL-related control channels. Notably, some TTIs do not carry any UL-related control channels. Hence, the amount of control overhead in the DL channel 300 is variable, and depends on the periodicity of the UL-related control channel (e.g., as configured by the network administrator) as well as the periodicity of the group/UE specific control channel (e.g., as determined by the TTI-length configurations of the radio frames 310-320).
[0027] FIG. 4 illustrates a flowchart of a method 400 for adapting TTI-lengths in a DL channel. The method 400 begins at step 410, where the eNB receives a first data destined for a first user. Thereafter, the method 400 proceeds to step 420, where the eNB receives a second data destined for a second user. The first data and the second data may be buffered in separate buffers of the eNB. Thereafter, the method 400 proceeds to step 430, where the eNB selects a first TTI-length for transporting the first data. This selection may be made in accordance with various selection criteria, including latency requirements, buffer size, mobility characteristics of the first user, etc. Thereafter, the method 400 proceeds to step 440, where the eNB selects a second TTI-length for transporting the second data. Next, the method 400 proceeds to step 450, where the eNB
transmits the first data in a first TTI having the first TTI-length. Next, the method 400 proceeds to step 460, where the eNB transmits the second data in a second TTI having the second TTI- length. The first data and the second data may be transmitted in a common radio-frame.
[0028] FIG. 5 illustrates a flowchart of a method 500 for selecting TTI-lengths for transporting data in a DL channel. Notably, the method 500 represents just one example for selecting TTI- lengths. Other examples that consider other factors and/or have more TTI-length designations may also be used to select TTI-lengths for data transmission. The method 500 begins at step 510, where the eNB determines whether the latency requirement of the data (e.g., whether the data requires low latency), which may be determined in accordance with the traffic type of the data. For instance, some traffic types (e.g., voice, mobile gaming, etc.) may require low levels of latency, while other traffic types (e.g., messaging, email, etc.) may have less stringent latency requirements.
[0029] If the data requires low latency, then a short TTI-length 515 is selected to transport the data. If the data has a higher (i.e., less stringent) latency requirement, then the method 500 proceeds to step 520, where the eNB determines the buffer size used to store the data.
Specifically, the buffer size of the data is indicative of the amount of data that needs to be transported. When large amounts of data need to be transported, then longer TTI-lengths may provide higher throughput rates by minimizing overhead. However, large TTI-lengths may not be warranted when only small amounts of data need to be transported. For instance, if there is not enough data to fill the long TTI, then a medium TTI-length may be more efficient. If the data has a small buffer size, then a medium TTI-length 525 is selected. Otherwise, if the data has a large buffer size, then the method 500 proceeds to step 530.
[0030] At step 530, the e B determines whether the user has a low, medium, high or very-high mobility characteristic. A user's mobility characteristic may correspond to a rate at which the user is moving. For instance, users that are moving at a higher rates of speed (e.g., a user communicating in a car) have higher mobility characteristics than users moving at comparatively lower rates of speed (e.g., a user walking through a park). Notably, a user's mobility
characteristic is highly correlated to wireless channel stability, as highly mobile users experience more volatile channel conditions than less mobile users. Moreover, wireless channel stability heavily influences the degree to which link adaptation can be improved through more frequent channel estimation opportunities. That is, users having moderate to high mobility characteristics may achieve improved bit-rates when using medium TTI-lengths (or even short TTI-lengths) due to enhanced link adaptation resulting from more frequent channel estimation opportunities. These higher bitrates may outweigh the overhead savings of long TTI-lengths, and consequently may increase overall throughput for those users. However, fast link adaptation capabilities may be less beneficial for stationary or slow moving users, as those users experience relatively stable channel conditions. As a result, low mobility users may derive higher throughput by exploiting the low-overhead nature of long TTI-lengths, rather than the faster link adaptation capabilities derived from medium or low TTI-lengths. In addition, users that have very high mobility characteristics (e.g., users moving at very-high rates of speed) may derive little or no gain from link adaptation, as channel conditions may be changing too quickly to perform channel estimation with sufficient accuracy to improve the bit-rate. Hence, very-high mobility users may achieve higher throughput from long TTI-lengths. Referring once again to the method 500, if the data is destined for a user having moderate to high mobility, then the eNB selects a medium TTI- length for transporting the data (at step 530). Alternatively, if the user has either low or very-
high mobility, then the eNB selects a medium TTI-length for transporting the data (at step 530). Notability, degrees of mobility (low, medium, high, and very high) may be relative to the network conditions and/or capabilities of the wireless communication devices.
[0031] FIG. 6 illustrates a protocol diagram for a communications sequence 600 for
communicating data in TTIs having varying TTI-lengths. The communications sequence 600 begins when a first data (Data l) 610 and a second data (Data l) 615 destined for the UE1 115 and UE 125 (respectively) are communicated from the backhaul network 130 to the eNB 110. Upon reception, the eNB 110 determines which TTI-length to transport the Data l 610 and the Data l 615. The eNB 110 communicates the TTI-lengths by sending a TTI length configuration (Data l) message 620 and a TTI length configuration (Data_2) message 625 to the UEs 115 and 125 (respectively). Thereafter, the eNB 110 communicates the Data l 610 and the Data_2 620 via the DL data transmission (Data l) 630 and the DL data transmission (Data_2) 635. In an embodiment, the DL data transmission (Data l) 630 and the DL data transmission (Data_2) 635 may be carried in different length TTIs of a common radio-frame.
[0032] FIG. 7 illustrates a flowchart of a method 700 for adapting TTI-lengths in a DL channel. The method 700 begins at step 710, where the eNB receives a first data destined for a user. Thereafter, the method 700 proceeds to step 720, where the eNB selects a first TTI-length for transporting the first data. Thereafter, the method 700 proceeds to step 730, where the eNB transmits the first data in a first TTI having the first TTI-length. Next, the method 700 proceeds to step 740, where the eNB receives a second data destined for the same user. Thereafter, the method 700 proceeds to step 750, where the eNB selects a second TTI-length for transporting the second data. The second TTI-length may be different than the first TTI-length for various reasons. For instance, the first data and the second data may have different latency requirements
and/or buffer sizes, and/or then user's mobility characteristics may have changed. Next, the method 700 proceeds to step 760, where the eNB transmits the second data in a second TTI having the second TTI-length.
[0033] FIG. 8 illustrates a protocol diagram for a communications sequence 800 for adapting the TTI-lengths used for carrying data to a common user. The communications sequence 800 begins when a Data l 810 destined for a UE 115 is communicated from the backhaul network 130 to the eNB 110. Upon reception, the eNB 110 selects a TTI-length for transporting the Data l 810, which the eNB 110 communicates to the UE 110 via the TTI length configuration (Data l) message 820. Thereafter, the eNB 110 communicates the Data l 810 in the DL data
transmission (Data l) 830. Thereafter, a Data_2 840 destined for a UE 115 is communicated from the backhaul network 130 to the eNB 110. Upon reception, the eNB 110 selects a TTI- length for transporting the Data_2 840, which the eNB 110 communicates to the UE 110 via the TTI length configuration (Data_2) message 850. Thereafter, the eNB 110 communicates the Data_2 840 in the DL data transmission (Data_2) 860. In an embodiment, the DL data transmission (Data l) 830 and DL data transmission (Data_2) 860 may be carried in the TTIs having different TTI lengths. The DL data transmission (Data l) 830 and DL data transmission (Data_2) 860 may be communicated in the same, or different, radio frames.
[0034] In some embodiments, the TTI structure of radio frames may be adapted dynamically, such the TTI length configuration messages/indications are included in the Group/UE-specific control channel of each TTI. On one hand, dynamically adapting the TTI structure of radio frames with such granularity may provide high degrees of flexibility with respect to TTI-length adaptation. On the other hand, the inclusion of additional control signaling in the UE/group specific control channel may significantly increase overhead in the radio frame, as the UE/group
specific control channel is communicated relatively frequently (e.g., in each TTI). To reduce the overhead attributable to TTI-length adaptation, the TTI structure of radio frame may be adapted in a semi- static manner.
[0035] FIG. 9 illustrates an embodiment of a DL channel 900 carrying a plurality of variable- length TTIs in a plurality of radio frames 910-920. The DL channel 900 may be somewhat similar to the DL channel 300, with the exception that the DL channel 900 carries the TTI length configuration messages/indications in the common control channel, rather than the UE-Group specific control channels. This may reduce the overhead attributable to TTI-length adaptation when high-frequency adaptation is unnecessary. Furthermore, different TTI-lengths may occupy different portions of the DL channel 900 through bandwidth partitioning. Such bandwidth partitioning may depend on the amount of UEs configured for a particular TTI length. For example, if there are twice the amount of UEs configured for the short TTI-length than the medium TTI-length, the bandwidth occupied by the short TTI-length may be twice the amount of bandwidth occupied by the medium-TTI length. An advantage of this semi-static arrangement is that the UEs know the TTI location in time and bandwidth partitioning by virtue of the aforementioned configuration messages/indications, and consequently the UEs only need to look for its UE/Group specific control channels in the time-frequency regions corresponding to the particular TTI-length. Hence, rather than having to search for the entire bandwidth and every atomic interval for its UE/Group specific control channels, this arrangement reduces the control channel decoding complexity of a UE.
[0036] A further alternative for reducing overhead is to perform TTI-length adaptation in radio frames that have a static TTI structure. In this context, radio frames having a static structure comprise a variety of TTI-lengths with which to schedule users, but the ratio and placement of
TTIs is fixed such that TTI-length does not change from one radio frame to another. FIG. 10 illustrates a downlink channel 1000 for communicating radio frames 1010-1020 having a static TTI structure. Notably, the radio frame 1010 and 1020 have identical TTI structures such that the placement/ratio of the short, medium, and long TTIs does not change from one radio frame to another. Hence, TTI-length adaptation is accomplished in the downlink channel 1000 through selective scheduling (e.g., scheduling users to different TTI-lengths), rather than by adapting the TTI structure of the radio frames 1010-1020. Similarly, TTI-length adaptation can be achieved via carrier aggregation. FIG. 11 illustrates a downlink channel 1000 for achieving TTI-length adaptation via carrier aggregation. As shown, mid-length TTIs are carried in the frequency band 1110, short-length TTIs are carried in the frequency band 1120, and long-length TTIs are carried in the frequency band 1130. Like the fixed-frame structure of the downlink channel 1000, TTI- length adaptation is accomplished in the downlink channel 1100 through selective scheduling (e.g., scheduling users to different TTI-lengths).
[0037] FIG. 12 illustrates a block diagram of an embodiment of a communications device 1200, which may be implemented as one or more devices (e.g., UEs, eNBs, etc.) discussed above. The communications device 1200 may include a processor 1204, a memory 1206, a cellular interface 1210, a supplemental wireless interface 1212, and a supplemental interface 1214, which may (or may not) be arranged as shown in FIG. 12. The processor 1204 may be any component capable of performing computations and/or other processing related tasks, and the memory 1206 may be any component (volatile, non-volatile, or otherwise) capable of storing programming and/or instructions for the processor 1204. In embodiments, the memory 1206 is non-transitory. The cellular interface 1210 may be any component or collection of components that allows the communications device 1200 to communicate using a cellular signal, and may be used to receive
and/or transmit information over a cellular connection of a cellular network. The supplemental wireless interface 1212 may be any component or collection of components that allows the communications device 1200 to communicate via a non-cellular wireless protocol, such as a Wi- Fi or Bluetooth protocol, or a control protocol. The supplemental interface 1214 may be any component or collection of components that allows the communications device 1200 to communicate via a supplemental protocol, including wire-line protocols.
[0038] Although the present invention and its advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims. Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims
1. A method of communicating data in a wireless channel, the method comprising:
receiving, by a transmitting device, a first plurality of data;
receiving, by the transmitting device, a second plurality of data; and
transmitting the first plurality of data in a first plurality of transmission time intervals
(TTIs) of the wireless channel, the first plurality of TTIs having a first TTI length; and
transmitting the second plurality of data in a second plurality of TTIs of the wireless channel, the second plurality of TTIs having a second TTI length that is different than the first
TTI length.
2. The method of claim 1 further comprising:
determining the first TTI length in accordance with a first latency requirement of the first plurality of data; and
determining the second TTI length in accordance with a second latency requirement of the second plurality of data, wherein the first latency requirement is different than the second latency requirement.
3. The method of claim 1 further comprising:
determining the first TTI length in accordance with a first buffer size associated with the first plurality of data; and
determining the second TTI length in accordance with a second buffer size associated with the second plurality of data, the first buffer size being different than the second buffer size.
4. The method of claim 1 further comprising:
determining the first TTI length in accordance with a first mobility characteristic of a first
receiving device, the first plurality of data being destined for the first receiving device; and determining the second TTI length in accordance with a second mobility characteristic of a second receiving device, the second plurality of data being destined for the second receiving device, wherein the first mobility characteristic is different than the second mobility
characteristic.
5. The method of claim 1, wherein the first TTI and the second TTI are carried in a common radio frame.
6. The method of claim 1, wherein the wireless channel is partitioned into at least a first band and a second band, the first band exclusively carrying TTIs having the first TTI length, and the second band exclusively carrying TTIs having the second TTI length.
7. The method of claim 1 further comprising:
periodically transmitting a first control channel carrying wireless control information in the first plurality of TTIs, wherein a periodicity of the first control channel depends on the first TTI length; and
periodically transmitting a second control channel carrying wireless control information in the second plurality of TTIs, wherein a periodicity of the second control channel depends on the second TTI length.
8. The method of claim 7, wherein the first control channel is transmitted more often than second control channel when the first TTI length is less than the second TTI length, and
wherein the second control channel is transmitted more often than the first control channel when the first TTI length is greater than the second TTI length.
9. The method of claim 1 further comprising:
periodically transmitting a first control channel carrying wireless control information in the first plurality of TTIs, wherein a periodicity of the first control channel depends on the first TTI length; and
periodically transmitting a second control channel carrying uplink related control information in the first plurality of TTIs, wherein the second control channel is de-coupled from a TTI structure of the wireless channel such that a periodicity of the second control channel is independent of the first TTI length.
10. The method of claim 1, wherein the first TTI length corresponds to a scheduling interval for the first plurality of TTIs that dictates a frequency with which wireless devices are scheduled to transmit or receive data in the wireless channel.
11. A transmitting device comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a first plurality of data;
receive a second plurality of data;
transmit the first plurality of data in a first plurality of transmission time intervals (TTIs) of a wireless channel, the first plurality of TTIs having a first TTI length; and
transmit the second plurality of data in a second plurality of TTIs of the wireless channel, the second plurality of TTIs having a second TTI length that is different than the first TTI length.
12. The transmitting device of claim 11, wherein the programming further includes instructions to:
determine the first TTI length in accordance with a first latency requirement of the first plurality of data; and
determine the second TTI length in accordance with a second latency requirement of the second plurality of data, wherein the first latency requirement is different than the second latency requirement.
13. The transmitting device of claim 11, wherein the programming further includes instructions to:
determine the first TTI length in accordance with a first buffer size associated with the first plurality of data; and
determine the second TTI length in accordance with a second buffer size associated with the second plurality of data, the first buffer size being different than the second buffer size.
14. The transmitting device of claim 11, wherein the programming further includes instructions to:
determine the first TTI length in accordance with a first mobility characteristic of a first receiving device, the first plurality of data being destined for the first receiving device; and
determine the second TTI length in accordance with a second mobility characteristic of a second receiving device, the second plurality of data being destined for the second receiving device, wherein the first mobility characteristic is different than the second mobility
characteristic.
15. The transmitting device of claim 11, wherein the first TTI and the second TTI are carried in a common radio frame.
16. A method for communicating data in a wireless channel, the method comprising:
receiving, by a transmitting device, a first plurality of data destined for a receiving device; selecting a first one of a plurality of transmission time intervals (TTI) lengths for transporting the first plurality of data;
transmitting the first plurality of data in a first TTI of the wireless channel, the first TTI having a first TTI length;
receiving, by the transmitting device, a second plurality of data destined for the receiving device;
selecting a second one of a plurality of TTI lengths for transporting the second plurality of data; and
transmitting the second plurality of data in a second TTI of the wireless channel, the second TTI having a second TTI length that is different than the first TTI length.
17. The method of claim 16, wherein the first TTI length is selected in accordance with a first latency requirement of the first plurality of data,
wherein the second TTI length is selected in accordance with a second latency
requirement of the second plurality of data, and
wherein the first latency requirement is different than the second latency requirement.
18. The method of claim 16, wherein the second plurality of data is received after the first plurality of data is transmitted, and wherein the method further comprises:
identifying a first mobility characteristic of the receiving device upon receiving the first plurality of data, wherein the first TTI length is selected in accordance with the first mobility characteristic; and
identifying a second mobility characteristic of the receiving device upon receiving the second plurality of data, wherein the second TTI length is selected in accordance with the second mobility characteristic, and wherein the first mobility characteristic is different than the second mobility characteristic.
19. A transmitting device comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a first plurality of data destined for a receiving device;
select a first one of a plurality of transmission time interval (TTI) lengths to use for transporting the first plurality of data;
transmit the first plurality of data in a first plurality of TTIs of a wireless channel, wherein each of the first plurality of TTIs have a first TTI length;
receive a second plurality of data destined for the receiving device; select a second TTI length to use for transporting the second plurality of data; and transmit the second plurality of data in a second plurality of TTIs of the wireless channel, wherein each of the second plurality of TTIs have a second TTI length that is different than the first TTI length.
20. The transmitting device of claim 19, wherein the instruction to select the first TTI length include an instruction to select the first TTI length in accordance with a first latency requirement of the first plurality of data,
wherein the instruction to select the second TTI length includes an instruction to select the second TTI length in accordance with a second latency requirement of the second plurality of data, and
wherein the first latency requirement is different than the second latency requirement.
21. The transmitting device of claim 19, wherein the second plurality of data is received after the first plurality of data is transmitted,
wherein the instructions to select the first TTI length include instructions to identify a first mobility characteristic of the receiving device upon receiving the first plurality of data, and select the first TTI length in accordance with the first mobility characteristic, and
wherein the instructions to select the first TTI length include instructions to identify a second mobility characteristic of the receiving device upon receiving the second plurality of data, and select the second TTI length in accordance with the second mobility characteristic, the first mobility characteristic being different than the second mobility characteristic.
22.
A communications device comprising:
a processor; and
a computer readable storage medium storing programming for execution by the processor, the programming including instructions to:
receive a first plurality of data from a transmitting device via a wireless channel, the first plurality of data being transported in a first plurality of transmission time intervals (TTIs) having a first TTI length; and
receive a second plurality of data from the transmitting device via the wireless channel, the second plurality of data being transported in a second plurality of TTIs having a second TTI length that is different from the first TTI length.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201380046878.2A CN104620629B (en) | 2012-09-12 | 2013-09-11 | System and method for adaptive transmission time interval (TTI) structure |
EP20210549.0A EP3800931B1 (en) | 2012-09-12 | 2013-09-11 | System and method for adaptive transmission time interval (tti) structure |
EP22150035.8A EP4009695B1 (en) | 2012-09-12 | 2013-09-11 | Adaptive transmission time interval (tti) structure |
EP13836937.6A EP2891357B1 (en) | 2012-09-12 | 2013-09-11 | System and method for adaptive transmission time interval (tti) structure |
CN201910252638.7A CN110099408B (en) | 2012-09-12 | 2013-09-11 | Systems and methods for adaptive Transmission Time Interval (TTI) structure |
CN202010635472.XA CN111935773B (en) | 2012-09-12 | 2013-09-11 | Systems and methods for adaptive Transmission Time Interval (TTI) structure |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/611,823 US9131498B2 (en) | 2012-09-12 | 2012-09-12 | System and method for adaptive transmission time interval (TTI) structure |
US13/611,823 | 2012-09-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014040531A1 true WO2014040531A1 (en) | 2014-03-20 |
Family
ID=50233224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/083284 WO2014040531A1 (en) | 2012-09-12 | 2013-09-11 | System and Method for Adaptive Transmission Time Interval (TTI) Structure |
Country Status (4)
Country | Link |
---|---|
US (6) | US9131498B2 (en) |
EP (3) | EP2891357B1 (en) |
CN (6) | CN109922501B (en) |
WO (1) | WO2014040531A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016142979A1 (en) * | 2015-03-06 | 2016-09-15 | 日本電気株式会社 | Wireless station, wireless terminal device and method for these |
WO2016148841A1 (en) * | 2015-03-14 | 2016-09-22 | Qualcomm Incorporated | Control signaling supporting multi-priority scheduling |
WO2017110956A1 (en) * | 2015-12-25 | 2017-06-29 | 株式会社Nttドコモ | User terminal, wireless base station, and wireless communication method |
WO2017124232A1 (en) * | 2016-01-18 | 2017-07-27 | Lenovo Innovations Limited (Hong Kong) | Uci transmission using different subframe types |
KR20170108065A (en) * | 2015-02-24 | 2017-09-26 | 후아웨이 테크놀러지 컴퍼니 리미티드 | System and method for transmission time intervals |
KR20170133352A (en) * | 2015-03-31 | 2017-12-05 | 퀄컴 인코포레이티드 | Management of dynamic transmission time interval scheduling for low latency communications |
CN109906659A (en) * | 2016-10-21 | 2019-06-18 | 高通股份有限公司 | Punching recovery and resource reclaim for multipriority scheduling |
US10595302B2 (en) | 2015-03-15 | 2020-03-17 | Qualcomm Incorporated | Subframe structure with embedded control signaling |
US10834750B2 (en) | 2015-07-09 | 2020-11-10 | Qualcomm Incorporated | Low latency physical uplink control channel with scheduling request and channel state information |
TWI757970B (en) * | 2016-01-15 | 2022-03-11 | 美商蘋果公司 | Apparatus of user equipment, apparatus of base station, and user equipment |
Families Citing this family (162)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9131498B2 (en) | 2012-09-12 | 2015-09-08 | Futurewei Technologies, Inc. | System and method for adaptive transmission time interval (TTI) structure |
US9497160B1 (en) * | 2013-06-24 | 2016-11-15 | Bit Action, Inc. | Symmetric NAT traversal for direct communication in P2P networks when some of the routing NATs are symmetric |
US10200137B2 (en) * | 2013-12-27 | 2019-02-05 | Huawei Technologies Co., Ltd. | System and method for adaptive TTI coexistence with LTE |
CN104883237B (en) * | 2014-02-28 | 2018-03-09 | 中兴通讯股份有限公司 | A kind of data transmission method, apparatus and system |
US11153875B2 (en) | 2014-05-19 | 2021-10-19 | Qualcomm Incorporated | Apparatus and method for inter-band pairing of carriers for time division duplex transmit- and receive-switching and its application to multiplexing of different transmission time intervals |
US11432305B2 (en) | 2014-05-19 | 2022-08-30 | Qualcomm Incorporated | Apparatus and method for synchronous multiplexing and multiple access for different latency targets utilizing thin control |
CN104158755B (en) * | 2014-07-30 | 2017-12-05 | 华为技术有限公司 | The methods, devices and systems of transmitting message |
EP3195508A1 (en) * | 2014-09-08 | 2017-07-26 | Interdigital Patent Holdings, Inc. | Systems and methods of operating with different transmission time interval (tti) durations |
US10064165B2 (en) | 2014-10-03 | 2018-08-28 | Qualcomm Incorporated | Downlink and uplink channel with low latency |
US10015691B2 (en) * | 2014-10-16 | 2018-07-03 | Qualcomm Incorporated | Channel state information procedure for enhanced component carriers |
WO2016064039A1 (en) | 2014-10-21 | 2016-04-28 | 엘지전자(주) | Data transmission/reception method in wireless communication system that supports low latency, and apparatus therefor |
US10455503B2 (en) | 2014-10-21 | 2019-10-22 | Lg Electronics Inc. | Method for monitoring downlink control channel in wireless communication system and apparatus for the same |
US10727983B2 (en) * | 2014-10-29 | 2020-07-28 | Qualcomm Incorporated | Variable length transmission time intervals (TTI) |
US10027462B2 (en) | 2014-10-31 | 2018-07-17 | Qualcomm Incorporated | Unified frame structure |
US9936498B2 (en) * | 2014-11-04 | 2018-04-03 | Qualcomm Incorporated | High reliability low latency mission critical communication |
US10143005B2 (en) | 2014-11-07 | 2018-11-27 | Qualcomm Incorporated | Uplink control resource allocation for dynamic time-division duplex systems |
US9814040B2 (en) * | 2014-11-21 | 2017-11-07 | Qualcomm Incorporated | UL/DL waveform and numerology design for low latency communication |
US10939454B2 (en) * | 2014-12-11 | 2021-03-02 | Qualcomm Incorporated | Prioritizing colliding transmissions in LTE and ultra-low latency LTE communications |
US20160219584A1 (en) * | 2015-01-22 | 2016-07-28 | Texas Instruments Incorporated | High performance nlos wireless backhaul frame structure |
US10110363B2 (en) * | 2015-01-29 | 2018-10-23 | Qualcomm Incorporated | Low latency in time division duplexing |
US10104683B2 (en) | 2015-02-06 | 2018-10-16 | Qualcomm Incorporated | Parallel low latency awareness |
US10334447B2 (en) * | 2015-02-27 | 2019-06-25 | Qualcomm Incorporated | Discontinuous reception procedures with enhanced component carriers |
KR102091610B1 (en) * | 2015-03-08 | 2020-03-20 | 엘지전자 주식회사 | Time delay adaptive signal transmission and reception method in wireless communication system and apparatus therefor |
US10397912B2 (en) * | 2015-03-12 | 2019-08-27 | Lg Electronics Inc. | Method for reducing transmission resource of control channel in short TTI, and device using same |
US9955497B2 (en) * | 2015-03-13 | 2018-04-24 | Qualcomm Incorporated | Low latency uplink acknowledgement channel waveform design |
US10075970B2 (en) | 2015-03-15 | 2018-09-11 | Qualcomm Incorporated | Mission critical data support in self-contained time division duplex (TDD) subframe structure |
US9936519B2 (en) | 2015-03-15 | 2018-04-03 | Qualcomm Incorporated | Self-contained time division duplex (TDD) subframe structure for wireless communications |
US10547415B2 (en) | 2015-03-15 | 2020-01-28 | Qualcomm Incorporated | Scalable TTI with advanced pilot and control |
US10342012B2 (en) | 2015-03-15 | 2019-07-02 | Qualcomm Incorporated | Self-contained time division duplex (TDD) subframe structure |
CN107431588B (en) | 2015-03-20 | 2020-08-07 | Lg 电子株式会社 | Method for allocating time-frequency resources for short TTI and apparatus therefor |
US9985760B2 (en) | 2015-03-31 | 2018-05-29 | Huawei Technologies Co., Ltd. | System and method for an adaptive frame structure with filtered OFDM |
KR102316775B1 (en) | 2015-04-02 | 2021-10-26 | 삼성전자 주식회사 | Method and apparatus for reduction of transmission time interval in wirelss cellular communication system |
EP3944551A1 (en) | 2015-04-02 | 2022-01-26 | Samsung Electronics Co., Ltd. | Transmission and reception method and apparatus for reducing transmission time interval in wireless cellular communication system |
US10455600B2 (en) * | 2015-04-08 | 2019-10-22 | Lg Electronics Inc. | Method for transmitting and receiving data in wireless communication system and apparatus for the same |
US10966194B2 (en) * | 2015-04-15 | 2021-03-30 | Qualcomm Incorporated | Coordinated wireless communications using multiple transmission time intervals |
WO2016175596A1 (en) * | 2015-04-29 | 2016-11-03 | Lg Electronics Inc. | Method and apparatus for receiving system information and paging in short tti in wireless communication system |
US9814058B2 (en) | 2015-05-15 | 2017-11-07 | Qualcomm Incorporated | Scaled symbols for a self-contained time division duplex (TDD) subframe structure |
US20160345311A1 (en) * | 2015-05-22 | 2016-11-24 | Qualcomm Incorporated | Techniques for scheduling data communications with shortened time duration |
US10868650B2 (en) * | 2015-05-27 | 2020-12-15 | Qualcomm Incorporated | Pilot reconfiguration and retransmission in wireless networks |
US9763244B1 (en) * | 2015-06-18 | 2017-09-12 | Amazon Technologies, Inc. | Adaptive data frame aggregation |
KR102278389B1 (en) * | 2015-06-26 | 2021-07-16 | 삼성전자 주식회사 | Method and apparatus for transmission and reception with reduced transmission time interval in wirelss cellular communication system |
CN106341890B (en) * | 2015-07-08 | 2019-09-17 | 电信科学技术研究院 | A kind of physical channel transmission method and equipment |
WO2017010633A1 (en) * | 2015-07-12 | 2017-01-19 | 엘지전자 주식회사 | Method and device for transmitting control information in wireless communication system |
US10863492B2 (en) * | 2015-07-16 | 2020-12-08 | Qualcomm Incorporated | Low latency device-to-device communication |
US9992790B2 (en) | 2015-07-20 | 2018-06-05 | Qualcomm Incorporated | Time division duplex (TDD) subframe structure supporting single and multiple interlace modes |
US11057914B2 (en) * | 2015-07-24 | 2021-07-06 | Lg Electronics Inc. | Downlink control information receiving method and user equipment, and downlink control information transmission method and base station |
EP4124168A1 (en) | 2015-08-12 | 2023-01-25 | Huawei Technologies Co., Ltd. | Data transmission method, user equipment, and base station |
WO2017026594A1 (en) * | 2015-08-13 | 2017-02-16 | 엘지전자 주식회사 | Method and apparatus for controlling power in wireless communication system |
JP6797807B2 (en) * | 2015-08-21 | 2020-12-09 | 株式会社Nttドコモ | Terminal and wireless communication method |
US10218457B2 (en) | 2015-08-24 | 2019-02-26 | Qualcomm Incorporated | Techniques for improving feedback processes based on a latency between a transmission time interval (TTI) and a feedback opportunity |
CN114944893A (en) | 2015-08-25 | 2022-08-26 | Idac控股公司 | Framing, scheduling and synchronization in a wireless system |
EP3324686B1 (en) * | 2015-08-27 | 2019-10-09 | Huawei Technologies Co., Ltd. | Uplink channel transmitting method, ue and base station |
WO2017038674A1 (en) * | 2015-09-01 | 2017-03-09 | 株式会社Nttドコモ | User terminal, wireless base station, and wireless communication method |
EP3346756B1 (en) * | 2015-09-02 | 2022-02-16 | NTT DoCoMo, Inc. | User terminal and method for receiving downlink control information |
KR102340499B1 (en) | 2015-09-04 | 2021-12-17 | 삼성전자 주식회사 | Method and apparatus for controlling uplink transmission power in wireless communication system |
CN107113848B (en) | 2015-09-15 | 2020-01-03 | 华为技术有限公司 | Control information sending or receiving method, device and system |
CN106550459B (en) * | 2015-09-18 | 2020-03-13 | 中兴通讯股份有限公司 | Downlink control method and device |
US10708908B2 (en) | 2015-09-24 | 2020-07-07 | Intel Corporation | Systems, methods and devices for resource allocation adjustments for wireless transmissions |
EP3355501A4 (en) * | 2015-09-24 | 2019-04-24 | Fujitsu Limited | Configuration method for transmission time interval, and data transmission method, apparatus and system |
CN106559874B (en) | 2015-09-24 | 2020-12-15 | 华为技术有限公司 | Subband scheduling method and device |
WO2017053637A1 (en) * | 2015-09-25 | 2017-03-30 | Intel IP Corporation | Coexistence of legacy and short transmission time interval for latency reduction |
KR102443053B1 (en) * | 2015-10-30 | 2022-09-14 | 삼성전자주식회사 | Method and apparatus for transmitting and receiving data in a wirelss communication system |
CN106658720A (en) * | 2015-10-30 | 2017-05-10 | 中兴通讯股份有限公司 | Short transmission time interval resource distribution method and device |
US10939423B2 (en) | 2015-10-30 | 2021-03-02 | Apple Inc. | Multiplexing transmission time intervals (TTIs) with physical downlink shared channel (PDSCH) puncturing detection |
WO2017077179A1 (en) * | 2015-11-02 | 2017-05-11 | Nokia Technologies Oy | Scheduling ues with mixed tti length |
WO2017078372A1 (en) * | 2015-11-02 | 2017-05-11 | 엘지전자 주식회사 | Method and user equipment for receiving downlink channel, and method and base station for transmitting downlink channel |
DK3372034T3 (en) * | 2015-11-03 | 2020-12-21 | Ericsson Telefon Ab L M | Procedures and devices for planning in uplink |
WO2017078326A1 (en) * | 2015-11-03 | 2017-05-11 | 엘지전자 주식회사 | Method for transmitting uplink control channel in wireless communication system and device therefor |
WO2017079530A1 (en) * | 2015-11-04 | 2017-05-11 | Interdigital Patent Holdings, Inc. | Device and methods for multiplexing transmissions with different tti duration |
CN106685581B (en) * | 2015-11-06 | 2021-09-28 | 北京三星通信技术研究有限公司 | Transmission method of physical uplink shared channel and user equipment |
US10244526B2 (en) | 2015-11-12 | 2019-03-26 | Electronics And Telecommunications Research Institute | Method and apparatus for transmitting and receiving using short TTI |
US10524245B2 (en) | 2015-11-25 | 2019-12-31 | Lg Electronics Inc. | Method for receiving downlink control channel in wireless communication system and device therefor |
EP3389205B1 (en) * | 2015-12-09 | 2020-08-05 | LG Electronics Inc. -1- | Signal transmission and reception method and device for same |
CN105376066B (en) * | 2015-12-15 | 2018-09-28 | 上海斐讯数据通信技术有限公司 | The verification method and verification system of serial communication |
KR20200058582A (en) * | 2015-12-18 | 2020-05-27 | 프라운호퍼-게젤샤프트 츄어 푀르더룽 데어 안게반텐 포르슝에.파우. | Data signal transmission in a wireless communication system with reduced end-to-end latency |
CN108476096B (en) * | 2015-12-30 | 2020-07-21 | 华为技术有限公司 | Downlink transmission method, base station and terminal |
CN106937383B (en) * | 2015-12-30 | 2021-12-21 | 北京三星通信技术研究有限公司 | Method and equipment for determining shortened subframe scheduling |
CN108370562B (en) * | 2015-12-31 | 2021-05-14 | 华为技术有限公司 | Cross-carrier scheduling method, feedback method and device |
WO2017122945A1 (en) * | 2016-01-11 | 2017-07-20 | 엘지전자(주) | Data reception method and user equipment, and data transmission method and base station |
US20170208575A1 (en) * | 2016-01-18 | 2017-07-20 | Qualcomm Incorporated | Low latency control overhead reduction |
CN108605344B (en) * | 2016-01-27 | 2022-05-31 | 株式会社Ntt都科摩 | User terminal, radio base station, and radio communication method |
CN108605030B (en) * | 2016-01-27 | 2021-12-14 | 株式会社Ntt都科摩 | User terminal, radio base station, and radio communication method |
EP3399798A4 (en) * | 2016-01-29 | 2018-12-19 | NTT DoCoMo, Inc. | User terminal, wireless base station, and wireless communication method |
WO2017132842A1 (en) | 2016-02-02 | 2017-08-10 | Nec Corporation | Method and apparatus for communications with carrier aggregation |
KR101927368B1 (en) | 2016-02-02 | 2018-12-10 | 엘지전자 주식회사 | Method for transmitting uplink control channel and user equipment for performing same |
WO2017132848A1 (en) * | 2016-02-02 | 2017-08-10 | 华为技术有限公司 | Tti configuration method, device and system |
JP6642057B2 (en) * | 2016-02-03 | 2020-02-05 | ソニー株式会社 | Wireless communication device, communication method, computer program, and wireless communication system |
BR112018015381A2 (en) * | 2016-02-03 | 2018-12-18 | Sony Corp | apparatus, method and system for wireless communication, and computer program |
CN108605323B (en) * | 2016-02-04 | 2022-09-09 | 诺基亚技术有限公司 | Method and apparatus for control and reference signals for implementing physical uplink shared channel communications |
CN108141718A (en) * | 2016-02-05 | 2018-06-08 | 华为技术有限公司 | Notification method, equipment and the system of TTI length |
JP6707892B2 (en) * | 2016-02-22 | 2020-06-10 | ソニー株式会社 | Base station apparatus and base station apparatus control method |
CN107154837B (en) * | 2016-03-03 | 2018-03-23 | 上海朗帛通信技术有限公司 | A kind of method and apparatus of delay in reduction radio communication |
US10015776B2 (en) | 2016-03-10 | 2018-07-03 | Qualcomm Incorporated | Low latency point to multipoint communication techniques |
US10985948B2 (en) | 2016-03-11 | 2021-04-20 | Qualcomm Incorporated | Noise and interference estimation in wireless systems using multiple transmission time intervals |
WO2017160020A1 (en) * | 2016-03-14 | 2017-09-21 | 주식회사 케이티 | Method and apparatus for frame structure configuration and information transmission for short tti |
KR102237525B1 (en) | 2016-03-14 | 2021-04-08 | 주식회사 케이티 | Methods of frame structure configuration and information transmission for short tti and apparatuses thereof |
CN106714325B (en) * | 2016-03-15 | 2019-04-05 | 北京展讯高科通信技术有限公司 | TTI variable wireless communications method and device |
WO2017160115A2 (en) * | 2016-03-17 | 2017-09-21 | 엘지전자 주식회사 | Radio resource control |
KR102249701B1 (en) | 2016-03-29 | 2021-05-10 | 한국전자통신연구원 | Scheduling method and appratus |
TWI751147B (en) * | 2016-03-30 | 2022-01-01 | 美商內數位專利控股公司 | Wireless transmjt/recevie unit and method performed thereby |
BR112018068506A2 (en) * | 2016-03-31 | 2019-01-22 | Huawei Tech Co Ltd | method and system for transmitting transmission mode, network device and terminal device information |
US20200304248A1 (en) * | 2016-03-31 | 2020-09-24 | Nokia Technologies Oy | Feedback timing |
CN108886768B (en) | 2016-03-31 | 2020-11-10 | 华为技术有限公司 | Data transmission method, base station and user equipment |
CN107295656B (en) * | 2016-03-31 | 2020-03-06 | 电信科学技术研究院 | Information transmission method, terminal and base station |
CN107295680B (en) * | 2016-04-01 | 2021-03-19 | 展讯通信(上海)有限公司 | Downlink data scheduling configuration method and system, base station and user equipment |
US10681633B2 (en) * | 2016-04-05 | 2020-06-09 | Qualcomm Incorporated | Configurable subframe structures in wireless communication |
EP3442285B1 (en) * | 2016-05-02 | 2023-03-08 | LG Electronics Inc. | Method for transmitting and receiving sidelink signal by ue in wireless communication system |
CN109417455B (en) * | 2016-05-13 | 2021-09-28 | 瑞典爱立信有限公司 | Configuration of downlink transmissions |
CN107370683B (en) * | 2016-05-13 | 2020-06-26 | 电信科学技术研究院 | Data transmission method, terminal and base station |
WO2017199284A1 (en) * | 2016-05-16 | 2017-11-23 | Necディスプレイソリューションズ株式会社 | Image display device, frame transmission interval control method, and image display system |
US10172150B2 (en) | 2016-05-20 | 2019-01-01 | Apple Inc. | TTI scheduling for improved ramp up of TCP throughput in cellular networks |
CN107404372B (en) * | 2016-05-20 | 2019-02-22 | 北京小米移动软件有限公司 | A kind of communication means and device |
US10574502B2 (en) | 2016-05-22 | 2020-02-25 | Lg Electronics Inc. | Method and apparatus for configuring frame structure for new radio access technology in wireless communication system |
JPWO2017208286A1 (en) * | 2016-06-03 | 2019-04-04 | 富士通株式会社 | Wireless communication apparatus and wireless communication method |
WO2017207063A1 (en) * | 2016-06-03 | 2017-12-07 | Huawei Technologies Co., Ltd. | Flexible physical layer architecture for latency reduction of high priority user data |
KR102252515B1 (en) * | 2016-06-15 | 2021-05-14 | 엘지전자 주식회사 | Method and apparatus for transmitting and receiving wireless signal in wireless communication system |
CN106792889B (en) * | 2016-06-15 | 2020-05-15 | 展讯通信(上海)有限公司 | Device and method for scheduling transmission time interval length, communication terminal and base station |
WO2018014189A1 (en) | 2016-07-19 | 2018-01-25 | Nec Corporation | Method and device for performing communication |
CN107634817B (en) | 2016-07-19 | 2020-01-31 | 华为技术有限公司 | Method and device for data transmission |
SG11201900542RA (en) * | 2016-07-21 | 2019-02-27 | Guangdong Oppo Mobile Telecommunications Corp Ltd | Method for signal transmission, terminal device and network device |
CN107666715B (en) | 2016-07-28 | 2019-12-24 | 上海朗帛通信技术有限公司 | Method and device in wireless transmission |
CN106793137B (en) | 2016-08-05 | 2018-11-27 | 北京展讯高科通信技术有限公司 | communication control method and device |
CN107690160B (en) | 2016-08-05 | 2019-01-08 | 上海朗帛通信技术有限公司 | A kind of method and apparatus in wireless communication |
CN107690181B (en) | 2016-08-05 | 2019-09-17 | 电信科学技术研究院 | A kind of Poewr control method and device of the transmission of short transmission time interval |
MX2019001645A (en) * | 2016-08-10 | 2019-07-08 | Interdigital Patent Holdings Inc | Timing advance and processing capabilities in a reduced latency system. |
JP2019176196A (en) * | 2016-08-10 | 2019-10-10 | 株式会社Nttドコモ | Base station, user device, and signal transmission method |
US10368345B2 (en) * | 2016-08-10 | 2019-07-30 | Qualcomm Incorporated | Low latency physical downlink control channel and physical downlink shared channel |
JP2019169750A (en) | 2016-08-10 | 2019-10-03 | 株式会社Nttドコモ | User equipment, and retransmission control method |
WO2018027831A1 (en) | 2016-08-11 | 2018-02-15 | 华为技术有限公司 | Information processing method and device |
US10182452B2 (en) * | 2016-08-11 | 2019-01-15 | Qualcomm Incorporated | Techniques for communicating feedback in low latency wireless communications |
WO2018028139A1 (en) * | 2016-08-12 | 2018-02-15 | 中兴通讯股份有限公司 | Information sending method, sending apparatus and computer storage medium |
CN111294194B (en) * | 2016-08-16 | 2022-06-21 | 上海朗帛通信技术有限公司 | Method and device in wireless transmission |
EP3504842B1 (en) * | 2016-08-23 | 2023-01-18 | Telefonaktiebolaget LM Ericsson (PUBL) | Intermediate node, transport network, central hub node and methods |
CN106254038B (en) * | 2016-09-29 | 2020-02-14 | 华为技术有限公司 | Communication method and device |
BR112019006497A2 (en) * | 2016-09-30 | 2019-06-25 | Huawei Tech Co Ltd | harq-ack hybrid feedback feedback method for automatic replay request acknowledgment, terminal device and network device |
KR102638922B1 (en) | 2016-10-10 | 2024-02-22 | 삼성전자 주식회사 | Method and apparatus for transmission and reception of multiple timing transmission schemes in wirelss cellular communication system |
ES2775791T3 (en) | 2016-11-04 | 2020-07-28 | Ericsson Telefon Ab L M | Design of the downlink control short physical channel mapping (sPDCCH) |
US10779312B2 (en) * | 2016-11-11 | 2020-09-15 | Qualcomm Incorporated | Discontinuous reception and scheduling techniques in wireless communication systems using multiple transmission time intervals |
CN106793143B (en) * | 2016-12-29 | 2020-05-05 | 珠海市魅族科技有限公司 | Management method and management device for downlink control information and base station |
CN108322939B (en) * | 2017-01-16 | 2021-12-17 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for wireless communication system supporting multiple physical layer methods |
US10595313B2 (en) | 2017-01-24 | 2020-03-17 | Qualcomm Incorporated | Techniques for cross-carrier scheduling using multiple transmission time interval durations |
WO2018141091A1 (en) * | 2017-02-04 | 2018-08-09 | 华为技术有限公司 | Method for transmitting information, method for receiving information, and device |
CN108541065B (en) * | 2017-03-03 | 2021-09-10 | 上海诺基亚贝尔股份有限公司 | Method for transmitting and receiving data, network device and terminal device |
CN108633087B (en) * | 2017-03-22 | 2021-11-09 | 华为技术有限公司 | Data transmission method, access network equipment and terminal equipment |
CN108631912B (en) * | 2017-03-23 | 2021-09-28 | 大唐移动通信设备有限公司 | Transmission method and device |
CN109152033B (en) * | 2017-06-16 | 2021-07-09 | 华为技术有限公司 | Method and device for sending information and determining information |
JP6904186B2 (en) * | 2017-09-15 | 2021-07-14 | トヨタ自動車株式会社 | In-vehicle devices, information processing devices, information processing methods, and programs |
WO2019148506A1 (en) * | 2018-02-05 | 2019-08-08 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | User equipment and method of wireless communication of same |
CN111480382B (en) * | 2018-02-07 | 2023-06-27 | Oppo广东移动通信有限公司 | User equipment and wireless communication method thereof |
JP7240375B2 (en) * | 2018-02-14 | 2023-03-15 | エルジー エレクトロニクス インコーポレイティド | Method and apparatus for transmitting and receiving downlink data channel |
US11496970B2 (en) | 2019-03-06 | 2022-11-08 | Qualcomm Incorporated | Support of high pathloss mode |
US11510071B2 (en) | 2019-04-17 | 2022-11-22 | Qualcomm Incorporated | Beam direction selection for high pathloss mode operations |
US11463964B2 (en) | 2019-04-17 | 2022-10-04 | Qualcomm Incorporated | Communication configuration for high pathloss operations |
US11445408B2 (en) * | 2019-04-17 | 2022-09-13 | Qualcomm Incorporated | High pathloss mode multiplexing |
US11477747B2 (en) | 2019-04-17 | 2022-10-18 | Qualcomm Incorporated | Synchronization signal periodicity adjustment |
US11438808B2 (en) | 2019-04-17 | 2022-09-06 | Qualcomm Incorporated | Acknowledgment messaging for resource reservations |
RU2728539C1 (en) * | 2019-08-02 | 2020-07-30 | Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. | Transmitting a data signal in a wireless communication system with reduced through delay |
CN110719535B (en) * | 2019-09-02 | 2021-09-14 | 北方工业大学 | Adaptive equalization adjustment method for downlink video stream code rate at video source end |
US11337168B2 (en) * | 2019-11-27 | 2022-05-17 | Qualcomm Incorporated | Protecting shared low noise amplifiers by limiting transmission power |
CN112532346A (en) * | 2020-11-03 | 2021-03-19 | 广州技象科技有限公司 | Link self-adaption method and device based on user time requirement |
JP2021044833A (en) * | 2020-11-25 | 2021-03-18 | フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン | Data signal transmission in wireless communication system with reduced end-to-end latency |
US20220030589A1 (en) * | 2020-12-09 | 2022-01-27 | Realtek Semiconductor Corporation | Packet receiving system and packet receiving method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1328087A1 (en) * | 2002-01-11 | 2003-07-16 | Alcatel | Method for communicating messages within a wireless communication network involving periodic measurements of channel characteristics performed with a frequency dependent on the speed of the mobile unit and communication network implementing said method |
EP1898542A1 (en) | 2005-06-14 | 2008-03-12 | NTT DoCoMo INC. | Transmitting apparatus, transmitting method, receiving apparatus and receiving method |
EP1938493A2 (en) | 2005-08-24 | 2008-07-02 | QUALCOMM Flarion Technologies, Inc. | Varied transmission time intervals for wireless communication system |
CN101292456A (en) * | 2005-08-24 | 2008-10-22 | 高通股份有限公司 | Varied transmission time intervals for wireless communication system |
Family Cites Families (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6240094B1 (en) * | 1997-12-22 | 2001-05-29 | Bell Atlantic Network Services, Inc. | Statistical time division multiplexer for a wireless asymmetric local loop communication system |
US7065051B2 (en) * | 2001-03-27 | 2006-06-20 | Intel Corporation | Management and scheduling of data that is wirelessly transmitted between a base transceiver station and subscriber units |
JP3717472B2 (en) * | 2002-11-08 | 2005-11-16 | 松下電器産業株式会社 | Transmitting apparatus and automatic gain control method |
EP1437912B1 (en) * | 2003-01-04 | 2010-09-08 | Samsung Electronics Co., Ltd. | Method for determining data rate of user equipment supporting EUDCH service |
US7324565B2 (en) * | 2003-05-14 | 2008-01-29 | Nokia Corporation | Method and device for channel multiplexing or demultiplexing |
JP2005204254A (en) * | 2004-01-19 | 2005-07-28 | Toshiba Corp | Radio base station. radio terminal station, and radio communication method |
JP3821823B2 (en) * | 2004-05-06 | 2006-09-13 | 松下電器産業株式会社 | Wireless communication terminal device and wireless communication method |
JP4567628B2 (en) * | 2005-06-14 | 2010-10-20 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile station, transmission method and communication system |
CN1905428B (en) * | 2005-07-25 | 2010-08-18 | 上海原动力通信科技有限公司 | Transmission method of TDD mobile communication system with low delay character |
US8644292B2 (en) * | 2005-08-24 | 2014-02-04 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
US9077433B2 (en) * | 2005-10-04 | 2015-07-07 | Huawei Technologies Co., Ltd. | Mobile station device and method, base station device and method, and mobile station device operating frequency band mapping method |
EA012923B1 (en) * | 2006-02-13 | 2010-02-26 | Сименс Акциенгезелльшафт | Method for transmitting data in packets in a radio communications system |
US7979768B2 (en) * | 2006-03-21 | 2011-07-12 | Interdigital Technology Corporation | Method and system for implementing hybrid automatic repeat request |
JP4818803B2 (en) * | 2006-05-01 | 2011-11-16 | 株式会社エヌ・ティ・ティ・ドコモ | Radio communication method and radio communication apparatus based on variable TTI length control |
JP4698498B2 (en) * | 2006-06-19 | 2011-06-08 | 株式会社エヌ・ティ・ティ・ドコモ | Base station, mobile station and communication method |
JP4703513B2 (en) * | 2006-08-22 | 2011-06-15 | 株式会社エヌ・ティ・ティ・ドコモ | Radio base station and method used in mobile communication system |
FI20065614L (en) * | 2006-09-29 | 2008-03-30 | Nokia Corp | Transmission time slot allocation for packet radio service |
BRPI0719541B1 (en) * | 2006-10-02 | 2020-02-11 | Lg Electronics, Inc. | DOWNLINK CONTROL SIGNAL TRANSMISSION METHOD |
CN104780027B (en) * | 2006-10-27 | 2018-09-04 | 三菱电机株式会社 | Data communications method, communication system and mobile terminal |
KR101796712B1 (en) * | 2007-02-02 | 2017-11-10 | 미쓰비시덴키 가부시키가이샤 | Communication method, base station, mobile communication system and mobile station |
US8811335B2 (en) * | 2007-04-20 | 2014-08-19 | Qualcomm Incorporated | Method and apparatus for dynamic adjustment of uplink transmission time |
KR101455982B1 (en) * | 2007-09-13 | 2014-11-03 | 엘지전자 주식회사 | Methods for data communication in mobile communication |
AU2009214780B9 (en) | 2008-02-15 | 2013-06-20 | Blackberry Limited | Systems and methods for assignment and allocation of mixed-type combinations of slots |
KR101570350B1 (en) | 2008-02-22 | 2015-11-19 | 엘지전자 주식회사 | Method for allocating dynamic Transmit Time Interval |
CN101572905B (en) * | 2008-04-30 | 2014-06-04 | 华为技术有限公司 | Method and device for adjusting transmission time interval |
CN101370285B (en) * | 2008-09-05 | 2011-09-14 | 上海华为技术有限公司 | Transmission method, system and base station for high speed descending grouping access data |
WO2010044627A2 (en) * | 2008-10-15 | 2010-04-22 | (주)엘지전자 | Method and apparatus for sending and receiving multi-carrier information in multi-carrier communication system |
US8625630B2 (en) * | 2009-03-05 | 2014-01-07 | Lg Electronics Inc. | Method and apparatus for updating system information in broadband wireless communication system |
CN101873698B (en) * | 2009-04-23 | 2012-12-26 | 中国移动通信集团公司 | Signal transmission method and relevant equipment thereof |
WO2011053851A2 (en) * | 2009-10-30 | 2011-05-05 | Research In Motion Limited | Reducing blind decodings for communications using carrier aggregation |
US8488483B2 (en) * | 2010-09-15 | 2013-07-16 | Telefonaktiebolaget L M Ericsson (Publ) | Method for a radio base station and a radio base station in a communication network system for assisting in or obtaining assistance in the UL reception of signals |
ES2434798T3 (en) * | 2011-02-21 | 2013-12-17 | Ntt Docomo, Inc. | Procedure for transmitting data between terminals of a wireless communication system, node and wireless communication system |
US8873489B2 (en) * | 2011-05-05 | 2014-10-28 | Mediatek Inc. | Signaling methods for UE-specific dynamic downlink scheduler in OFDMA systems |
US20130142138A1 (en) * | 2011-12-05 | 2013-06-06 | Esmael Hejazi Dinan | Coordination of Control Channel Transmissions |
WO2013181369A1 (en) * | 2012-05-31 | 2013-12-05 | Interdigital Patent Holdings, Inc. | Measurements and interference avoidance for device-to-device links |
US9131498B2 (en) * | 2012-09-12 | 2015-09-08 | Futurewei Technologies, Inc. | System and method for adaptive transmission time interval (TTI) structure |
-
2012
- 2012-09-12 US US13/611,823 patent/US9131498B2/en active Active
-
2013
- 2013-09-11 CN CN201910253296.0A patent/CN109922501B/en active Active
- 2013-09-11 CN CN201910252638.7A patent/CN110099408B/en active Active
- 2013-09-11 EP EP13836937.6A patent/EP2891357B1/en active Active
- 2013-09-11 EP EP22150035.8A patent/EP4009695B1/en active Active
- 2013-09-11 EP EP20210549.0A patent/EP3800931B1/en active Active
- 2013-09-11 WO PCT/CN2013/083284 patent/WO2014040531A1/en active Application Filing
- 2013-09-11 CN CN201380046878.2A patent/CN104620629B/en active Active
- 2013-09-11 CN CN202010635472.XA patent/CN111935773B/en active Active
- 2013-09-11 CN CN201910252645.7A patent/CN110087256B/en active Active
- 2013-09-11 CN CN201910253339.5A patent/CN109982379B9/en active Active
-
2015
- 2015-08-11 US US14/823,873 patent/US9743403B2/en active Active
-
2017
- 2017-07-12 US US15/648,186 patent/US10582494B2/en active Active
-
2018
- 2018-04-25 US US15/962,241 patent/US10219273B2/en active Active
- 2018-04-25 US US15/962,001 patent/US10285175B2/en active Active
- 2018-11-15 US US16/191,999 patent/US11039435B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1328087A1 (en) * | 2002-01-11 | 2003-07-16 | Alcatel | Method for communicating messages within a wireless communication network involving periodic measurements of channel characteristics performed with a frequency dependent on the speed of the mobile unit and communication network implementing said method |
EP1898542A1 (en) | 2005-06-14 | 2008-03-12 | NTT DoCoMo INC. | Transmitting apparatus, transmitting method, receiving apparatus and receiving method |
EP1938493A2 (en) | 2005-08-24 | 2008-07-02 | QUALCOMM Flarion Technologies, Inc. | Varied transmission time intervals for wireless communication system |
CN101292456A (en) * | 2005-08-24 | 2008-10-22 | 高通股份有限公司 | Varied transmission time intervals for wireless communication system |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101962059B1 (en) | 2015-02-24 | 2019-03-25 | 후아웨이 테크놀러지 컴퍼니 리미티드 | System and method for transmission time intervals |
US11122562B2 (en) | 2015-02-24 | 2021-09-14 | Huawei Technologies Co., Ltd. | System and method for transmission time intervals |
US10939433B2 (en) | 2015-02-24 | 2021-03-02 | Huawei Technologies Co., Ltd. | System and method for transmission time intervals |
KR102187900B1 (en) | 2015-02-24 | 2020-12-07 | 후아웨이 테크놀러지 컴퍼니 리미티드 | System and method for transmission time intervals |
KR20170108065A (en) * | 2015-02-24 | 2017-09-26 | 후아웨이 테크놀러지 컴퍼니 리미티드 | System and method for transmission time intervals |
US10841922B2 (en) | 2015-02-24 | 2020-11-17 | Huawei Technologies Co., Ltd. | System and method for transmission time intervals |
US10412730B2 (en) | 2015-02-24 | 2019-09-10 | Huawei Technologies Co., Ltd. | System and method for transmission time intervals |
US10271331B2 (en) | 2015-02-24 | 2019-04-23 | Huawei Technologies Co., Ltd. | System and method for transmission time intervals |
KR20190031595A (en) * | 2015-02-24 | 2019-03-26 | 후아웨이 테크놀러지 컴퍼니 리미티드 | System and method for transmission time intervals |
US10342016B2 (en) | 2015-03-06 | 2019-07-02 | Nec Corporation | Radio station, radio terminal apparatus, and method for these |
WO2016142979A1 (en) * | 2015-03-06 | 2016-09-15 | 日本電気株式会社 | Wireless station, wireless terminal device and method for these |
JP2018513598A (en) * | 2015-03-14 | 2018-05-24 | クアルコム,インコーポレイテッド | Control signaling to support multi-priority scheduling |
KR20170128261A (en) * | 2015-03-14 | 2017-11-22 | 퀄컴 인코포레이티드 | Control signaling supporting multi-priority scheduling |
KR102579980B1 (en) * | 2015-03-14 | 2023-09-18 | 퀄컴 인코포레이티드 | Control signaling supporting multi-priority scheduling |
WO2016148841A1 (en) * | 2015-03-14 | 2016-09-22 | Qualcomm Incorporated | Control signaling supporting multi-priority scheduling |
CN107432034B (en) * | 2015-03-14 | 2020-12-15 | 高通股份有限公司 | Control signaling to support multi-priority scheduling |
CN107432034A (en) * | 2015-03-14 | 2017-12-01 | 高通股份有限公司 | Support the control signaling of multipriority scheduling |
AU2016233842B2 (en) * | 2015-03-14 | 2019-10-03 | Qualcomm Incorporated | Control signaling supporting multi-priority scheduling |
RU2714605C2 (en) * | 2015-03-14 | 2020-02-18 | Квэлкомм Инкорпорейтед | Transmission of control overhead signals, which supports multi-priority dispatching |
US10231259B2 (en) | 2015-03-14 | 2019-03-12 | Qualcomm Incorporated | Control signaling supporting multi-priority scheduling |
US11743894B2 (en) | 2015-03-15 | 2023-08-29 | Qualcomm Incorporated | Subframe structure with embedded control signaling |
US10595302B2 (en) | 2015-03-15 | 2020-03-17 | Qualcomm Incorporated | Subframe structure with embedded control signaling |
US11463993B2 (en) | 2015-03-15 | 2022-10-04 | Qualcomm Incorporated | Subframe structure with embedded control signaling |
KR102224519B1 (en) | 2015-03-31 | 2021-03-05 | 퀄컴 인코포레이티드 | Management of dynamic transmission time interval scheduling for low latency communications |
KR20170133352A (en) * | 2015-03-31 | 2017-12-05 | 퀄컴 인코포레이티드 | Management of dynamic transmission time interval scheduling for low latency communications |
US10750494B2 (en) | 2015-03-31 | 2020-08-18 | Qualcomm Incorporated | Management of dynamic transmission time interval scheduling for low latency communications |
US11330619B2 (en) | 2015-07-09 | 2022-05-10 | Qualcomm Incorporated | Low latency physical uplink control channel with scheduling request and channel state information |
US11558893B2 (en) | 2015-07-09 | 2023-01-17 | Qualcomm Incorporated | Low latency physical uplink control channel with scheduling request and channel state information |
US10834750B2 (en) | 2015-07-09 | 2020-11-10 | Qualcomm Incorporated | Low latency physical uplink control channel with scheduling request and channel state information |
WO2017110956A1 (en) * | 2015-12-25 | 2017-06-29 | 株式会社Nttドコモ | User terminal, wireless base station, and wireless communication method |
TWI757970B (en) * | 2016-01-15 | 2022-03-11 | 美商蘋果公司 | Apparatus of user equipment, apparatus of base station, and user equipment |
WO2017124232A1 (en) * | 2016-01-18 | 2017-07-27 | Lenovo Innovations Limited (Hong Kong) | Uci transmission using different subframe types |
CN108476429B (en) * | 2016-01-18 | 2023-03-21 | 联想创新有限公司(香港) | UCI transmission using different subframe types |
CN108476429A (en) * | 2016-01-18 | 2018-08-31 | 联想创新有限公司(香港) | Use the UCI transmission of different subframe types |
CN109906659A (en) * | 2016-10-21 | 2019-06-18 | 高通股份有限公司 | Punching recovery and resource reclaim for multipriority scheduling |
Also Published As
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10285175B2 (en) | System and method for adaptive transmission time interval (TTI) structure | |
US10271331B2 (en) | System and method for transmission time intervals | |
RU2701202C1 (en) | Transmission configuration of a downlink | |
CN112005509B (en) | Uplink control information payload size | |
CN110268658B (en) | Method, apparatus, equipment and medium for wireless communication | |
EP3823397A1 (en) | Traffic-dependent transmission for interference reduction | |
KR20150050308A (en) | Method and apparatus for determining guard period on time division duplex system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13836937 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013836937 Country of ref document: EP |