CN101056186B - Multicast method in the user network and its system - Google Patents
Multicast method in the user network and its system Download PDFInfo
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- CN101056186B CN101056186B CN2006100257016A CN200610025701A CN101056186B CN 101056186 B CN101056186 B CN 101056186B CN 2006100257016 A CN2006100257016 A CN 2006100257016A CN 200610025701 A CN200610025701 A CN 200610025701A CN 101056186 B CN101056186 B CN 101056186B
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Abstract
The invention relates to the communication field, discloses a multicast method and its system of user network, when send the same information to several equipment of user network, save the network resources, simplify the user operation. In the invention, the management entity may send the information to several equipment of user network through multicast mode. Add the equipment into the multicast group in advance, then create the multicast bearer according to the current position of equipment in multicast group, send the multicast information through the bearers. Introduced the multicast functional modules in the management entity for multicast group information maintenance, create and release the multicast bearers, and multicast accounting. Confirm after the equipment of multicast group received the multicast information, if no confirmed over time, the management entity shall re-transmit in point-to-point mode. Ensure the reliable transmission of multicast information through the confirmation and retransmission mechanism.
Description
Technical field
The present invention relates to the communications field, particularly the multicasting technology in the user network.
Background technology
At first generation simulation standard type mobile communication technology (1G) and second generation global system for mobile communications (Global System for mobile Communication; Abbreviation " GSM "), code division multiple access (CodeDivision Multiple Access; Be called for short " CDMA ") wait digital mobile communication technological (2G) afterwards; 3G (Third Generation) Moblie (The Third Generation is called for short " 3G ") technology can provide the service than 2G higher rate, thereby can support more diversified form of service.
At third generation partner program (3rd Generation Partnership Project; Abbreviation " 3GPP ") in the version 6 (Release 6, are called for short " Rel6 "), introduced the notion of multicast (multicast)/broadcasting (Broadcast); For the user provides multimedia broadcast/group broadcast service (Multimedia Broadcast/MulticastService; Be called for short " MBMS "), this business utilizes efficiently that Radio Transmission Technology sends to a plurality of users with identical information, can more effectively utilize preferential air interface resource; Higher power system capacity is provided, has also simplified signaling process.
Wherein, multicasting technology has been realized the efficient data transmission of 3G network mid point to multiple spot, and conserve network bandwidth, reduction offered load are the multi-point technology that generally adopts effectively.The cast communication model is as shown in Figure 1, is that the forwarding foundation-(S G), adopts tree-shaped forwarding, and offered load does not increase (tree begins until leaf all is equally thick from root) with userbase with the source and destination.
Along with the development of 3G technology, enriching of class of business makes user experience constantly get a promotion.Many users have a plurality of equipment and signatory different service, and for example, party a subscriber has a common mobile phone; Can also use car phone to converse while taking a bus, he is through personal digital assistant (Personal Digital Assistant is called for short " PDA "); For example; Blackberry (a kind of wireless handheld device) sends and receive e-mail (E-mail), also uses notebook computer (NoteBookcomputer is called for short " the NB ") online of band data card etc.Although these equipment respectively have purposes, a kind of business of some also more than support, for example, all right supporting telephone of PDA is professional, and the user can carry all equipment at any time and still can keep communication.
Each equipment that belongs to same user can be formed individual domain network (Personal Area Network is called for short " PAN ").Specifically, PAN is an information network of using " individual among a small circle " of short-range radio new technology formation, is made up of at least two equipment that belong to same user, interconnects in a certain way in PAN inside.
" individual among a small circle " is meant between individual subscriber family, office or the individual information equipment that carries.Need not to use electric wire, cable, latch or the like to interconnect, only need on the interconnected equipment of needs, add the transceiving chip that a slice is very little, realize interconnected between individual's various information appliances at one's side.For example, adopt the chip of " bluetooth (Blue tooth) " technological employed transceiving program, have only one square centimeter of size, be contained on user's equipment at one's side such as mobile phone, NB, just individual subscriber among a small circle in constituted " personal network ".
All devices in PAN externally uses unique user who is activated to serve identification module (UserService Identify Module is called for short " USIM ").Various device among the PAN uses this USIM to insert outer net, and the user can directly control PAN.Through PAN, as shown in Figure 2, the user need not open NB, just can learn the E-mail that NB receives from mobile phone, and on mobile phone, just can read these E-mail.
In addition, the customer network management, CNM entity be user management these physically a good distance off or equipment very near but that belong to this user provide approach.Management entity is arranged in core net, and is as shown in Figure 3, realizes the management to this user's all devices through this logic entity, and the user can directly carry out Operation and Maintenance to this entity.
In customer network management, CNM, defined at present bookkeeping to a plurality of equipment of a user; For example; Register/deregister (registering/go registration), activation/deactivation (activating/anti-the activation), but just to point-to-point service, for example; The control of user network equipment, connection, professional be redirected etc.
In practical application, there is following problem in such scheme: when needs when a plurality of equipment send identical information in user network, network resources waste is serious, user's complicated operation.
Cause the main cause of this situation to be; Because present customer network management, CNM only carries out to individual equipment; When needs when a plurality of equipment send identical information in user network, need the user to carry out the operation of repeated multiple times ground, this also is a kind of waste to Internet resources simultaneously.
Summary of the invention
In view of this, main purpose of the present invention is to provide method of multicasting and the system thereof in a kind of user network, makes to save Internet resources, simplification user operation when a plurality of equipment send identical information in user network.
For realizing above-mentioned purpose, the invention provides the method for multicasting in a kind of user network, comprise following steps:
At least two equipment that in the management entity of user network, will belong to same user join in the multicast group, and management entity is arranged in core net, and the user is directly to the real Operation and Maintenance that carries out of said management;
According to the current location information of each equipment in the multicast group described in the said management entity, set up the multicast bear of each equipment in this multicast group that is connected to from this management entity;
Said management entity sends to each equipment in the said multicast group with multicast information through said multicast bear.
Wherein, said management entity is encapsulated in multicast information in the multicast message and sends, and comprises equipment mark, multicast identifier in the message header of this multicast message, device location information;
After said equipment is received said multicast message, remove to encapsulate the multicast information that obtains wherein.
In this external said method,, then return acknowledge message to said management entity if equipment is successfully received said multicast message in the said multicast group;
After if said management entity sends said multicast message, in preset duration, do not receive the affirmation message of said equipment, then this equipment is carried out point-to-point re-transmission.
In this external said method, also comprise following steps:
When the equipment in the said multicast group need leave multicast group, send the request of registering of going to said management entity, this management entity is deleted the information of this equipment according to this request from this multicast group.
In this external said method, same equipment can belong to two or more different multicast group simultaneously.
In this external said method, the equipment in the said user network need send to said management entity with this multicast information earlier when said multicast group is sent multicast information, send to each equipment in this multicast group by this management entity again.
In this external said method, said multicast information is user data, control command or their combination.
In this external said method, said multicast information directly sends to independent user equipment through said multicast bear, perhaps,
But said multicast information sends to the central apparatus of the identification of accessed network in individual domain network identity earlier through said multicast bear, is forwarded to the miscellaneous equipment that belongs to corresponding multicast group through the connection in this individual domain network by this central apparatus again.
The present invention also provides the multi-cast system in a kind of user network, comprises the multicast functionality module in the facilities and administration entity in the same multicast group, and management entity is arranged in core net, and the user is directly to the real Operation and Maintenance that carries out of said management;
Said multicast functionality module is used for the multicast group information of maintenance customer's network, sets up and the release multicast bear;
In the time of need carrying out multicast; Said multicast functionality module is according to the current location information of each equipment in the multicast group described in the said management entity; Foundation is connected to the multicast bear of each equipment in this multicast group from this management entity, and multicast information is sent to each equipment in this multicast group through these multicast bears.
Wherein, said multicast functionality module also is used for multicast is chargeed.
Through finding that relatively the main distinction of technical scheme of the present invention and prior art is, through a plurality of equipment transmission information of management entity employing multicast mode in user network of user network.In advance equipment is added multicast group, set up multicast bear according to the current location of each equipment in the multicast group again, carry through these and send multicast information.In management entity, introduced the multicast functionality module, be used for multicast group information and safeguard, set up and release multicast bear and multicast charging.Through introducing the multicast mode, need the identical information of repeatedly point-to-point transmission to send to a multicast group once in the prior art, thereby saved Internet resources, simplified user's operation.Equipment in the particularly same user network can be formed a plurality of PAN; And a plurality of equipment in the same multicast group also maybe be in same PAN; Only need send a multicast information to this PAN this moment, just can be distributed to all equipment in this PAN in this multicast group by the central apparatus of this PAN, thereby practice thrift the Internet resources of this section from the management entity to PAN; And the Internet resources of this section generally are public networks, often the bottleneck of communication place.
Confirm after equipment is received multicast information in the multicast group that management entity carries out the re-transmission of point-to-point to the overtime equipment that does not have to confirm.Guaranteed that through affirmation and retransmission mechanism multicast information can be by transmission reliably.Because retransmit is to adopt point-to-point mode, rather than the multicast mode of point-to-multipoint, so can not take additional network resources.
Description of drawings
Fig. 1 is a cast communication model sketch map in the prior art;
Fig. 2 is a PAN structure chart in the prior art;
Fig. 3 is a customer network management, CNM sketch map in the prior art;
Fig. 4 is according to the method for multicasting flow chart in the user network of first embodiment of the invention;
Fig. 5 is according to the multi-cast system structure chart in the user network of second embodiment of the invention;
Fig. 6 is the user network multicast group management sketch map according to second embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer, will combine accompanying drawing that the present invention is done to describe in detail further below.
The present invention is in the time need sending identical information to each equipment of same user; Through these equipment are formed a multicast group; And adopt multicasting technology to send this information, and can disposable this information be sent to these equipment, this user can manage these equipment easily.
Each equipment of this user can be as required; These equipment are formed a plurality of multicast group according to different combinations; And through in the management entity of network side, introducing the multicast functionality module; Realize the multicast group information maintenance, set up and discharge multicast management functions such as multicast bear and multicast charging (MulticastManagement Function is called for short " MMF ").
Method of multicasting in the user network of first embodiment of the invention is as shown in Figure 4.The equipment that belongs to same user has subscriber equipment (User Equipment is called for short " UE ") 1, UE2, device A and miscellaneous equipment etc., and wherein, UE2, device A and miscellaneous equipment belong to this user's same PAN, and the annexation of these equipment is as shown in Figure 5.
In step 401, UE1, UE2, device A and the miscellaneous equipment (at least two equipment) that in the management entity of user network, will belong to same user join in the multicast group.Wherein, same equipment can belong to two or more different multicast group simultaneously.Each multicast group all is assigned multicast identifier (Group ID), and this multicast identifier and facility information all are stored in the management entity.
In step 402, according to each facility information in the multicast group in the management entity, and the current location information of these equipment, for example, CELL ID (cell identification number) sets up the multicast bear that leads to each equipment in this multicast group from this management entity.
In step 403, the equipment in the user network, for example the outer equipment UE 3 of this multicast group need send to management entity with this multicast information when this multicast group is sent multicast information.Wherein, multicast information can be user data, control command or their combination.
In step 404, management entity directly sends to UE1 with multicast information through multicast bear.Wherein, Multicast information is encapsulated in the multicast message by management entity and sends; Comprise equipment mark in the message header of this multicast message, for example, international mobile station identity number (International Mobile StationIdentity; Be called for short " IMSI "), the privately owned ID of user network etc., information such as multicast identifier and device location information.Management entity because UE1 is the autonomous device that has activated USIM, but activated the equipment accessed network identification identity of USIM, so can directly send to it with multicast information.
In step 405, management entity directly sends to UE2 with multicast information through multicast bear.Though UE2 is in PAN, it is the PAN central apparatus that has activated USIM, the Access Network that can be belonged to identification identity, so management entity also can directly send to it with multicast information.
If the device A in the multicast group and miscellaneous equipment are not UE independently, but then management entity sends to the central apparatus that accessed network among the PAN is discerned identity with multicast information earlier through multicast bear, for example is UE2, is transmitted by central apparatus.
Equipment in the same user network can be formed a plurality of PAN; And a plurality of equipment in the same multicast group also can be in same PAN; Only need send a multicast message to the central apparatus of this PAN this moment; Just can be distributed to all equipment in this PAN in this multicast group by the central apparatus of this PAN; Thereby practiced thrift the Internet resources of this section from the management entity to PAN (being the Internet resources of management implementation mode) in this execution mode, and the Internet resources of this section generally are public networks, often the bottleneck of communication place to this section of UE2.
In step 406, if equipment is successfully received multicast message, for example, UE2 has successfully received multicast message, then after receiving multicast message, returns acknowledge message to management entity, and this message is removed to encapsulate the multicast information that obtains wherein.
In step 407, through the connection among this PAN multicast information is forwarded to device A and the miscellaneous equipment of independent UE in this multicast group as the UE2 of PAN central apparatus.
In step 408, device A among the PAN and miscellaneous equipment return acknowledge message to UE2 after successfully receiving this multicast message, and also from this message, extract multicast information.
In step 409, the affirmation message that miscellaneous equipment returned among device A and this PAN is transmitted to management entity by UE2.
In step 410, if after management entity sends multicast message, in preset duration, do not receive the affirmation message of equipment, for example, UE1 does not return acknowledge message, then UE1 is carried out point-to-point re-transmission.Guaranteed that through affirmation and retransmission mechanism multicast information can be by transmission reliably.Because retransmit is to adopt point-to-point mode, rather than the multicast mode of point-to-multipoint, so can not take additional network resources.
In step 411, behind the UE1 success receiving multicast message, return acknowledge message to management entity.
If the employing prior art, this multicast message need carry out point-to-point transmission repeatedly to UE1, UE2, device A and miscellaneous equipment, yet; Through introducing the multicast mode; This multicast message can send to a multicast group once, only under the situation that equipment is not confirmed to receive to this multicast message, just adopts point-to-point to send to this equipment; Thereby saved Internet resources, simplified user's operation.
In step 412, if the equipment in the multicast group need leave multicast group, for example, be UE1, then send the request of registering of going to management entity.
In step 413, management entity is according to going register requirement that the information of UE1 is deleted from this multicast group.
Multi-cast system in the user network of second embodiment of the invention is as shown in Figure 5, wherein comprises the multicast functionality module in the facilities and administration entity in the same multicast group.Wherein, the equipment in this multicast group comprises UE1, PAN, in this PAN, also comprises UE2, dependent device A and miscellaneous equipment.
Specifically, the multicast functionality module is used for the multicast group information of maintenance customer's network, sets up and the release multicast bear.When needs carry out multicast; The multicast functionality module is according to the current location information (other module by in the management entity is safeguarded) of each equipment in the multicast group in the management entity; Foundation is connected to the multicast bear of each equipment in this multicast group from this management entity, and multicast information is sent to each equipment in this multicast group through these multicast bears.
Because UE1 and UE2 are the autonomous device that has activated USIM, but the equipment accessed network that has activated USIM is discerned identity, so management entity can directly send to them with multicast information.For dependent device A and the miscellaneous equipment among the PAN in this multicast group, the central apparatus UE2 by this PAN transmits from the multicast information of management entity.
In addition, the multicast functionality module also is used for multicast is chargeed.
The realization of user network multicast of using this system is as shown in Figure 6; PAN1 and UE1 belong to multicast group 1; PAN2 and UE3 belong to multicast group 2; The user sends identical user data through each equipment in multicast group 1 of the management entity in the user network, and also each equipment in multicast group 2 sends identical user data.
Wherein, each equipment in the multicast group 1 is all in this user's family, after this user is away from home; Need long-range equipment of closing in the family; At this moment, can send the control command of shutdown to multicast group 1, each equipment in just can closeall multicast group 1 through management entity.
Though through reference some preferred implementation of the present invention; The present invention is illustrated and describes; But those of ordinary skill in the art should be understood that and can do various changes to it in form with on the details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. the method for multicasting in the user network is characterized in that, comprises following steps:
At least two equipment that in the management entity of user network, will belong to same user join in the multicast group, and said management entity is arranged in core net, and the user is directly to the real Operation and Maintenance that carries out of said management;
According to the current location information of each equipment in the multicast group described in the said management entity, set up the multicast bear of each equipment in this multicast group that is connected to from this management entity;
Said management entity sends to each equipment in the said multicast group with multicast information through said multicast bear.
2. the method for multicasting in the user network according to claim 1 is characterized in that said management entity is encapsulated in multicast information in the multicast message and sends, and comprises equipment mark, multicast identifier in the message header of this multicast message, device location information;
After said equipment is received said multicast message, remove to encapsulate the multicast information that obtains wherein.
3. the method for multicasting in the user network according to claim 2 is characterized in that, if equipment is successfully received said multicast message in the said multicast group, then returns acknowledge message to said management entity;
After if said management entity sends said multicast message, in preset duration, do not receive the affirmation message of said equipment, then this equipment is carried out point-to-point re-transmission.
4. according to the method for multicasting in each described user network in the claim 1 to 3, it is characterized in that, also comprise following steps:
When the equipment in the said multicast group need leave multicast group, send the request of registering of going to said management entity, this management entity is deleted the information of this equipment according to this request from this multicast group.
5. according to the method for multicasting in each described user network in the claim 1 to 3, it is characterized in that same equipment can belong to two or more different multicast group simultaneously.
6. according to the method for multicasting in each described user network in the claim 1 to 3; It is characterized in that; Equipment in the said user network need be when said multicast group be sent multicast information; Earlier this multicast information is sent to said management entity, send to each equipment in this multicast group by this management entity again.
7. according to the method for multicasting in each described user network in the claim 1 to 3, it is characterized in that said multicast information is user data, control command or their combination.
8. according to the method for multicasting in each described user network in the claim 1 to 3, it is characterized in that said multicast information directly sends to independent user equipment through said multicast bear, perhaps,
But said multicast information sends to the central apparatus of the identification of accessed network in individual domain network identity earlier through said multicast bear, is forwarded to the miscellaneous equipment that belongs to corresponding multicast group through the connection in this individual domain network by this central apparatus again.
9. the multi-cast system in the user network is characterized in that, comprises the multicast functionality module in the facilities and administration entity in the same multicast group, and said management entity is arranged in core net, and the user directly carries out Operation and Maintenance to said management reality;
Said multicast functionality module is used for the multicast group information of maintenance customer's network, sets up and the release multicast bear;
In the time of need carrying out multicast; Said multicast functionality module is according to the current location information of each equipment in the multicast group described in the said management entity; Foundation is connected to the multicast bear of each equipment in this multicast group from this management entity, and multicast information is sent to each equipment in this multicast group through these multicast bears.
10. the multi-cast system in the user network according to claim 9 is characterized in that, said multicast functionality module also is used for multicast is chargeed.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005029876A2 (en) * | 2003-09-18 | 2005-03-31 | Nokia Corporation | Method and apparatus for managing multicast delivery to mobile devices involving a plurality of different networks |
| CN1605176A (en) * | 2001-12-13 | 2005-04-06 | 艾利森电话股份有限公司 | Broadcast in point-to-point oriented packet-switched networks |
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| CN1605176A (en) * | 2001-12-13 | 2005-04-06 | 艾利森电话股份有限公司 | Broadcast in point-to-point oriented packet-switched networks |
| WO2005029876A2 (en) * | 2003-09-18 | 2005-03-31 | Nokia Corporation | Method and apparatus for managing multicast delivery to mobile devices involving a plurality of different networks |
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