CN102625417B - A kind of system and method realizing the binding of multi-standard wireless terminal - Google Patents
A kind of system and method realizing the binding of multi-standard wireless terminal Download PDFInfo
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Abstract
The present invention discloses a kind of system and method realizing the binding of multi-standard wireless terminal, wherein method includes: terminal, after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults；If wireless network node is as the anchor point of cross-mode bearing binding, know that corresponding terminal supports that multi-standard is bound by initializing negotiation, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, it is established that the incidence relation of this terminal multi-standard context.The present invention solves and distributes downlink data, route and the problems of mobile management under multi-standard passage, by the control to anchor point, it is to avoid the single current systematic function that possible packet loss causes in multi-standard distribution and mobile process declines.
Description
Technical field
The present invention relates to the technology that multi-standard mobile communication system merges, particularly relate at multi-standard mobile communication system the system and method that realizes the binding of multi-standard wireless terminal in the case of depositing.
Background technology
Along with wireless communication technology and the continuous evolution of standard, mobile Packet Service has obtained huge development, and the data throughput capabilities of unit/terminal is constantly promoting.With Long Term Evolution (LTE, LongTermEvolution) as a example by system, the data that can support descending maximum rate 100Mbps in 20M bandwidth are transmitted, and in LTE (LTEAdvanced) system of follow-up enhancing, the transfer rate of data will promote further.
But, the data throughput rate of unit/terminal depends not only on used wireless technology, but also depends on the situations such as the load of the bandwidth occupied by channel, coverage and community.In the frequency ranges such as particularly 800M, 900M and 1800M under 2.6GHz, frequency spectrum resource is at full stretch, operator typically only has the bandwidth resources of about 10M and disposes for LTE, the restriction of frequency spectrum resource makes to carry out LTE service not the most existing HSPA+ technology in these frequency ranges, and (it is that high-speed packet accesses HSPA downward evolution version, it is a technology of up-downgoing ability enhancing) there is obvious relative potence, and these resources of frequency range are because frequency range is low, path loss is little, is again the first-selection of LTE initial deployment reduction cost.
Therefore, if able to make full use of existing GSM, WCDMA network technology, bind with new LTE technology, terminal is supported simultaneously, and the data of multiple wireless standard are transmitted, both the absolute data throughput rate of terminal can have been improved, increase market attractiveness to terminal client, the deficiency that the LTE initial stage covers can be made up again, alleviate and weaken or lose side effect such as carrying out loss of data that intersystem handover caused because of LTE covering.
And the binding of multiple types terminal to be realized under existing network framework, can there is the following technical difficult point and restriction:
(1) the IP address that terminal obtains under different systems is different, mobile gateway selects different transmission paths by different destination addresses, this makes the business data flow of a kind of application can only be by the transmission path of a certain standard, it is impossible to makes full use of many transmission paths and improves transmission bandwidth.And want to make full use of many transmission paths and improve transmission bandwidth, how the packet transmission context being necessary for considering under different systems carries out relevant binding；
(2) transmission path delay of different systems is inconsistent, transmission control protocol (TCP can be caused, TransmissionControlProtocol) layer/IP layer data bag can not arrive in order, thereby result in TCP layer duplicate acknowledgment, so that network enters Congestion Avoidance state, this can affect data transmission efficiency；
(3) different systems its wireless environment, load differ for terminal, data distribution policy on many transmission paths needs to control flexibly according to radio condition, just can give full play to the advantage of multi-standard binding, this needs to set up different standard load and radio quality information circular mechanism between corresponding cross-mode network node and between network and terminal；
(4) because of existing different systems protocol architecture framework it has been determined that, therefore the binding of multiple types terminal to be realized need to be to existing Non-Access Stratum (NAS, and Access Layer (AS Non-AccessStratum), AccessStratum) control protocol is modified, and need long-term standardisation process, it is also required to the change of terminal underlying protocol layered scheme simultaneously, therefore cannot promote the progress of LTE industrialization rapidly.
Summary of the invention
The technical problem to be solved is to provide a kind of system and method realizing the binding of multi-standard wireless terminal, it is possible to makes full use of many transmission paths and obtains high throughput rate, thus improves transmission bandwidth.
In order to solve above-mentioned technical problem, the invention provides a kind of system realizing the binding of multi-standard wireless terminal, including core network gateway, the wireless network node of multiple standard and the terminal of multiple standards；Wherein, core network gateway receives the upstream data of terminal by the wireless network node of this standard and concurrently makes arrangements for his funeral end downlink data；It is characterized in that:
Terminal, for after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults；
Wireless network node, for knowing that terminal supports that multi-standard is bound by initializing negotiation when as the anchor point of cross-mode bearing binding, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, it is established that the incidence relation of this terminal multi-standard context.
Further,
Support that the terminal that multi-standard is bound is the terminal that multiple terminals of tool different systems bundle formation, activate data pack protocol to the wireless network node of corresponding standard independently by each terminal of binding, to set up the carrying of described user face data.
Further,
Set up for mutual application layer protocol entity, including multi-standard terminal applies part entity and multi-standard terminal use face part entity between the wireless network node and the terminal supporting multi-standard binding of multiple standards；And between the wireless network node of multiple standards, introducing intersystem interface and corresponding intersystem protocol entity, this intersystem protocol entity includes applying between the system of chain of command tunnel entity between the system in part entity and user face；
Multi-standard terminal applies area protocol entity and multi-standard terminal use face part protocol entity is introduced respectively on the wireless network node of multiple standards and terminal respective user face.
Further,
Wireless network node as anchor point obtains the unique identification information under the current standard of described terminal by the multi-standard terminal applies part entity of node side, or newly distribute, for terminal, unique mark that a cross-mode is unified, and know that terminal supports information and/or terminal the supported standard load situation information of multi-standard binding；Saved by the wireless network of intersystem interface and intersystem protocol entity with other standard and interact, and by interacting between multi-standard terminal applies part entity and the terminal of node side, it is established that the incidence relation of multi-standard context；
The cross-mode bearing binding of terminal is to be triggered according to terminal supported standard load situation information as the wireless network node of anchor point by network side, or is triggered by terminal.
Further,
In core network gateway as the major heading gateway of cross-mode bearing binding after the cross-mode bearing binding of terminal is set up, send descending multi-system data stream to the wireless network node as anchor point, and receive the upstream data that this wireless network node sends；
After receiving descending multi-system data stream as the wireless network node of anchor point by the multi-standard terminal use face part entity of node side, according to terminal measurement and the link winding time of feedback and/or the distribution of handling capacity each parameter determination data and strategy thereof, and to the terminal of this standard and/or pass through other standard wireless network node terminal distribution downlink data to corresponding standard according to the strategy determined；
Terminal receives the downlink data of different systems by the multi-standard terminal use face part entity of end side, and sequentially merges, the downlink data received to obtain the data transmission peak rate of multi-standard.
Further,
Wireless network node as anchor point sorts and stamps sequence number post package and become packet distributing the downlink data will distributed before described downlink data, or the downlink data that will distribute directly is packaged into packet；By the multi-standard terminal use face part entity packet distribution of node side；
The data pack buffer that terminal will be received by different systems by the multi-standard terminal use face part entity of end side, then, the user data layer protocol of packet upper layer is delivered by the order of the sequence number encapsulated in the packet according to wireless network node, or delivers to upper strata User Agreement after being directly ranked up by the packet of caching according to the sequence number of host-host protocol or application layer protocol after the Business Stream identifying packet again；Data merging is carried out by upper-layer user's agreement packet to being subsequently received.
Further, this system also includes the base station of the wireless network node jurisdiction district as described anchor point, wherein:
After terminal is completed the switching of the community to this terminal by the wireless network node as anchor point in moving process, carry out cross-mode carrying by base station after the multi-standard terminal applies part entity triggering switching of end side to the radio network node request as anchor point heavily to bind, the user face tunnel information that in this request, carried terminal identifies and after switching, base station is distributed；
Found the user face context of binding by terminal iidentification as the wireless network node of anchor point, distribute the tunnel, user face of this node, and carry, by applying part entity base station after switching to return cross-mode between the system of chain of command, the response heavily bound, base station notice after switching switch the context that the release of front base station is relevant to terminal.
Further, this system also includes because described terminal moves the wireless network node as new anchor point and this terminal own base station causing anchor point to change and to occur, wherein:
According to the position that described terminal moves, wireless network node as former anchor point determines that this node to change, first suspend to the data distribution of base station, then reorientation switching flow is initiated, and after reorientation has switched, initiate cross-mode bearing binding to this base station heavily ask, request is carried wireless network node and the terminal iidentification of correspondence as new anchor point after switching；The context relevant to terminal is discharged after receiving the cross-mode carrying weight binding response that base station returns；
Base station determines the position of wireless network node as new anchor point according to terminal iidentification, and initiates cross-mode carrying weight bind request to this as the wireless network node of new anchor point, carries user face tunnel information and the terminal iidentification of this base station in this request；
Wireless network node as new anchor point uses terminal iidentification to associate the context that this node is relevant to terminal, distributes tunnel, this node users face, and returns cross-mode carrying weight binding response by base station to the wireless network node as former anchor point.
Further,
Support that the terminal that multi-standard is bound is will to have multiple terminals physical ground of different systems or logically bundle the terminal of formation；The wireless standard of the terminal bundled is any two or more in the wireless standard of the long evolving system of second filial generation communication system, third generation communication system, long evolving system and enhancing, and the terminal bundled is two or more.
In order to solve above-mentioned technical problem, the invention provides a kind of method realizing the binding of multi-standard wireless terminal, relate to terminal and the wireless network node of multiple standard, the method includes:
Terminal, after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults；
If wireless network node is as the anchor point of cross-mode bearing binding, know that corresponding terminal supports that multi-standard is bound by initializing negotiation, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, it is established that the incidence relation of this terminal multi-standard context.
Further, support that the terminal that multi-standard is bound is the terminal that multiple terminals of tool different systems bundle formation；This terminal, after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults, specifically include:
The terminal supporting multi-standard binding activates data pack protocol to the wireless network node of corresponding standard independently by each terminal of binding and carries to set up described user face data；Then, each terminal carries out described initialization negotiation to the wireless network node of corresponding standard independently.
Further, the cross-mode bearing binding in terminal also includes before triggering and setting up:
Set up for mutual application layer protocol entity, including multi-standard terminal applies part entity and multi-standard terminal use face part entity between the wireless network node and the terminal supporting multi-standard binding of multiple standards；And between the wireless network node of multiple standards, introducing intersystem interface and corresponding intersystem protocol entity, this intersystem protocol entity includes applying between the system of chain of command tunnel entity between the system in part entity and user face；
Mark and the mark of multi-standard terminal use face part protocol entity of multi-standard terminal applies area protocol entity is introduced respectively on the wireless network node of multiple standards and terminal respective user face.
Further, by initializing negotiation, wireless network node as anchor point knows that corresponding terminal supports that multi-standard is bound, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, set up the incidence relation of this terminal multi-standard context, specifically include:
By the multi-standard terminal applies part entity of node side, this wireless network node knows that terminal supports information and/or this terminal supported standard load situation information of multi-standard binding, obtain the unique identification information under the current standard of this terminal, or newly distribute, for terminal, unique mark that a cross-mode is unified；
According to terminal supported standard load situation information or triggered and set up cross-mode bearing binding by described terminal as the wireless network node of anchor point by network side；
Wireless network node as anchor point is interacted by the wireless network joint of intersystem interface and intersystem protocol entity with other standard, and by interacting between multi-standard terminal applies part entity and the terminal of node side, it is established that the incidence relation of described multi-standard context.
Further, the method further relates to the core network gateway of multiple standard, and the method also includes:
In core network gateway, the major heading gateway as cross-mode bearing binding sends descending multi-system data stream to the wireless network node as anchor point after cross-mode bearing binding is set up, and receives the upstream data that this wireless network node sends；
After receiving descending multi-system data stream as the wireless network node of anchor point by the multi-standard terminal use face part entity of node side, according to terminal measurement and the link winding time of feedback and/or the distribution of handling capacity each parameter determination data and strategy thereof, and to the terminal of this standard and/or pass through other standard wireless network node terminal distribution downlink data to corresponding standard according to the strategy determined；
Terminal receives the downlink data of different systems by the multi-standard terminal use face part entity of end side, and sequentially merges, the downlink data received to obtain the data transmission peak rate of multi-standard.
Further, the wireless network node as anchor point distributes downlink data to the terminal of each standard, specifically includes:
The downlink data will distributed before distribution downlink data sorts and is packaged into packet, or the downlink data that will distribute directly is packaged into packet；By the multi-standard terminal use face part entity packet distribution of node side；
The downlink data that end-on is received sequentially merges, and specifically includes:
The data pack buffer that will be received by different systems by the multi-standard terminal use face part entity of end side, the user data layer protocol of described packet upper layer is delivered by the sequence then pressing wireless network node, or delivers to upper strata User Agreement after being directly ranked up by the packet of caching by the sequence number of host-host protocol or application layer protocol after the Business Stream identifying packet again；
Upper-layer user's agreement packet to being subsequently received carries out data merging.
Further, the method further relates to the base station of the wireless network node jurisdiction district as anchor point, and the method also includes:
Terminal in moving process completed by the wireless network node as anchor point the community to this terminal switching after, carry out cross-mode carrying by base station after the multi-standard terminal applies part entity triggering switching of end side to the radio network node request as anchor point heavily to bind, the user face tunnel information that in this request, carried terminal identifies and after switching, base station is distributed；
Found the user face context of binding by terminal iidentification as the wireless network node of anchor point, distribute the tunnel, user face of this node, and carry, by applying part entity base station after switching to return cross-mode between the system of chain of command, the response heavily bound, base station notice after switching switch the context that the release of front base station is relevant to terminal.
Further, the method further relates to because terminal moves the wireless network node as new anchor point and this terminal own base station causing anchor point to change and to occur, the method also includes:
According to the position that terminal moves, wireless network node as former anchor point determines that this node to change, first suspend to the data distribution of base station, then reorientation switching flow is initiated, and after reorientation has switched, initiate cross-mode bearing binding to this base station heavily ask, request is carried wireless network node and the terminal iidentification of correspondence as new anchor point after switching；
Base station determines the position of wireless network node as new anchor point according to terminal iidentification, and initiates cross-mode carrying weight bind request to this wireless network node, carries user face tunnel information and the terminal iidentification of this base station in this request；
Wireless network node as new anchor point uses terminal iidentification to associate the context that this node is relevant to terminal, distributes tunnel, this node users face, and returns cross-mode carrying weight binding response by base station to the wireless network node as former anchor point；
Wireless network node as former anchor point discharges the context relevant to terminal after receiving cross-mode carrying weight binding response.
The present invention is by introducing distribution anchor point in the wireless network, solve under multi-standard passage, distribute downlink data, route and the problems of mobile management, by the control to anchor point, it is to avoid the single current systematic function that possible packet loss causes in multi-standard distribution and mobile process declines.Control and user plane protocol entity by introducing on user face, solve data packet disorder sequence, and the association identification required for multi-standard bearing binding is distributed and controls negotiations process, it is not necessary to existing protocol framework is produced large variation.The present invention does not repel the direct corresponding function changing existing protocol infrastructure and realizing similar MTBAP and MTBUP entity.The present invention is transparent to opposite end application layer services device or communication ends, and opposite end requires no knowledge about this terminal the connection of multiple wireless standard.
Accompanying drawing explanation
Fig. 1 is the configuration diagram of the system embodiment realizing the binding of multi-standard wireless terminal of the present invention；
Fig. 2 is protocol stack architecture schematic diagram of eating dishes without rice or wine in the system embodiment shown in Fig. 1；
Fig. 3 is intersystem interface protocol stack schematic diagram in the system embodiment shown in Fig. 1；
Fig. 4 is the flow chart of the embodiment of the method realizing the binding of multi-standard wireless terminal of the present invention；
Fig. 5 is the exemplary system configuration diagram of the double wireless standard terminal binding of 3G+4G of the present invention；
Fig. 6 is the different systems anchor point interface protocol stack example schematic diagram of the present invention；
Fig. 7 present invention realizes multi-standard wireless terminal binding loading establishing process example flow diagram；
The wireless terminal that multi-standard is bound by Fig. 8 present invention realizes the process example flow chart that mobility controls in the case of anchor point is motionless；
The wireless terminal that multi-standard is bound by Fig. 9 present invention realizes the process example flow chart of mobile management under anchor point situation of change.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, technical scheme is set forth in.Embodiment exemplified below is merely to illustrate and explains the present invention, and does not constitute the restriction to technical solution of the present invention.
The framework of the system embodiment realizing the binding of multi-standard wireless terminal of the present invention is as it is shown in figure 1, this system includes the core network gateway of multiple standard, the wireless network node of multiple standard and terminal, wherein:
Core network gateway, for receiving the upstream data of terminal from the wireless network node of this standard, and sends the downlink data of terminal to this wireless network node；
Wireless network node, if the anchor point as the binding of terminal cross-mode knows whether this terminal supports that multi-standard is bound in consulting in the initialization with terminal；After the terminal cross-mode bearing binding supporting multi-standard binding triggers and sets up, and interact between the wireless network node of this other standard of terminal and this terminal, it is established that the incidence relation of terminal multi-standard context；
Terminal, for after setting up user plane bearer to the network node being presently in standard, by consulting to report whether possess the ability supporting that multi-standard is bound with initializing of this network node, and coordinates network control node to complete the binding of multi-standard carrying.
The terminal of the different systems of support is bundled by the multi-standard binding terminal shown in Fig. 1, data pack protocol (PDP is activated to the wireless network node of each self-made type independently by each terminal of binding, PacketDataProtocol), user face data carrying is set up.Multi-standard binding terminal is by consulting to know whether this network node is anchor point with the initialization of network node.
Network side or end side all can the initial cross-mode bearing bindings of triggering terminal.In typical case, for ease of carrier policy control, the binding of the cross-mode carrying of the information triggering terminal of the standard supported according to terminal as the wireless network node (referred to as anchor point) of anchor point by network side, such as bind ability according to the multi-standard of terminal support and terminal is presently in the load situation of standard, if the carrying of other standard of terminal does not also set up and the license of the condition such as the wireless quality of this standard, first triggering terminal sets up the carrying of other standard, then triggers the binding to the successively carrying of the different systems of foundation；If or the carrying of other standard of terminal has built up and the license of the condition such as the wireless quality of this standard, the most directly triggers the binding carrying multi-standard.
In core network gateway as the major heading gateway of terminal cross-mode binding after multi-standard bearing binding is set up, send descending multi-system data stream to the network node as anchor point, and receive the upstream data that this network node sends；
Anchor point determines data distribution and strategy thereof when receiving the downlink data of terminal, and according to the strategy determined to this standard terminal and/or by other standard wireless network node distribution downlink data；
The downlink data of the different systems received is merged by multi-standard binding terminal, to obtain the peak rate of multi-standard.
In this embodiment, major heading gateway example standard 1 core network gateway as shown in Figure 1, in actual figure 1 above, standard 2 core network gateway can also be as major heading gateway.Wireless network node example standard 1 wireless network node as shown in Figure 1 as anchor point.It practice, the wireless network node of the standard 2 shown in Fig. 1 can also be as anchor point.
As shown in Figure 1 multi-standard binding terminal, is by standard 1 terminal and standard 2 terminals physical ground or the terminal logically bundling formation；Its wireless standard of the terminal bundled can be any two or more in the various wireless standard such as 2G, 3G, LTE and LTE-A, and the quantity of the terminal of binding can be 2 or more.
Wherein, standard 1 terminal and standard 2 terminals physical are bundled, such as mainly by by the chip of standard 1 terminal and the integrated chip of standard 2 terminal in a terminal, and assist the chip operation being controlled different systems by software；Standard 1 terminal and standard 2 terminal logic being bundled, such as terminal 1 and terminal 2 are different data cards, and the Deta bearer being controlled terminal 1 and terminal 2 by software resident in the data terminals such as computer and network interaction is bound.
System embodiment shown in Fig. 1 to realize the control of the binding of the Deta bearer to terminal multi-standard, needs existing protocol infrastructure does following variation, refers to Fig. 2 and Fig. 3.
Firstly the need of setting up for mutual application layer protocol entity between wireless network node and the multi-standard binding terminal of multi-standard, including multi-standard terminal applies part (MTBAP, Multi-technologyBoostApplicationPart) protocol entity and multi-standard terminal use face part (MTBUP, Multi-technologyBoostUserPlanePart) protocol entity；Accordingly, it would be desirable to introduce MTBAP and MTBUP the two protocol entity on the wireless network node, each standard terminal respective user face of each standard；Wherein:
MTBAP protocol entity is mainly used in the following function: the anchor point inquiry to terminal capability, terminal reports for its multi-standard binding ability and other standard wireless quality situation, anchor point triggering terminal is initiated to set up the PDP activation of other standard and carrying, and the foundation of bearing relation and binding etc. between different systems.
MTBAP protocol entity substantially belongs to chain of command agreement, can be by existing standard control protocol i.e. radio resource control (RRC, RadioResourceControl), Non-Access Stratum protocols (NAS) etc. are improved enforcement；But for avoiding the variation to existing protocol stack, it is proposed that it can be carried on the user face protocol stack of terminal, as shown in Figure 2, typically can be with Internet protocol (IP)/UDP (UDP, or IP/ transmission control protocol (TCP) or the port binding of other form UserDatagramProtocol), set up as a kind of application layer protocol, thus avoid the variation to terminal underlying protocol stack.
MTBUP protocol entity, wherein the MTBUP entity in anchor point side is mainly used in being ranked up and being packaged into packet by the user face message of the multi-standard received from major heading core network gateway；At end side MTBUP entity for the packet received by different systems is cached, deliver according to the user data layer of the sequence upper layer of anchor point, it is to avoid the throughput that the Congestion Avoidance control that the application layer protocols such as TCP are carried out due to data packet disorder is caused declines.Or, user face message need not be ranked up by the MTBUP entity of anchor point side, but deliver to upper-layer protocol after directly packet being carried out buffering sequence according to the sequence number of the transmission such as TCP/UDP or application layer protocol by end side MTBUP entity after identifying Business Stream, but this scheme can increase terminal convection current identification, process and buffer the expense of sequence again.
Additionally, MTBUP is alternatively arranged as a kind of protocol bearer, it is used for carrying out different link winding time RTT (RoundTripTime) of transmission link, the isoparametric measurement of handling capacity and feedback, as the reference of different systems data distribution at anchor point.
nullExcept increasing MTBAP between wireless network node and multi-standard binding terminal、Outside MTBUP protocol entity，For carrying out the binding between different systems wireless network node、Mobile management control and cross-mode cell load information circular，Also need to introduce an intersystem interface (Inter-RATInterface between the wireless network node of different systems，As shown in Figure 1) and corresponding protocol entity，This intersystem interface can be a new interface，Can also be by existing Iur、The interfaces such as Iur-g and X2 carry out strengthening the interface realized，Protocol entity corresponding to its chain of command is with application part (IRAP between system，Inter-RATApplicationPart) protocol entity represents，Protocol entity corresponding to its user face is with tunneling protocol entity (IRTP between system，Inter-RATTunnelProtocol) represent，Can be found in IRAP and IRTP being respectively at wireless network layer and transport network layer in Fig. 3.
The present invention is directed to said system embodiment, correspondingly additionally provide the embodiment of the method realizing the binding of multi-standard wireless terminal, its flow process as shown in Figure 4, comprises the steps:
410: terminal, after the network node being presently in standard sets up user plane bearer, carries out initializing with this network node and consults；
Terminal initiates PDP activation to the network node being presently in standard, it is established that packet switch (PS, the PockectSwitch) Deta bearer in user face.
Terminal initializes, by carry out between network control node, the tenability consulting circular to multi-standard binding.
420: by the negotiation that initializes with terminal, the network node as anchor point knows that terminal supports multi-standard bearing binding ability and the load situation of supported standard thereof；
Consult to would know that the anchor point whether this network node is terminal bearing binding by initializing；
If this network node is the anchor point as the binding of terminal multi-standard, first know whether this terminal has multi-standard user and bind the information of ability.
If anchor point knows that terminal supports multi-standard user's binding function, then set up protocol interface with terminal, context relation including MTBAP protocol entity, the unique identification information under the current standard of terminal is obtained by this MTBAP protocol entity, also can be newly assigned to, by anchor point, unique mark that one cross-mode of terminal is unified, and obtain the load situation information of the supported standard of terminal, such as the terminal standard to being supported the most has been set up PS Deta bearer and (may only have been established the Deta bearer of a standard, or established the Deta bearer of multiple standard) and the carrying set up under wireless signal the information such as whether can use.
430: by network side or end side triggering terminal cross-mode bearing binding, interact between cross-mode network node and between anchor point and terminal, it is established that the binding relationship of terminal multi-standard context.
Network side or end side all can decide whether to trigger cross-mode bearing binding.In typical case, for ease of carrier policy control, the anchor point of network side the load situation information initiating terminal cross-mode bearing binding of standard is supported according to terminal.
Interacted by intersystem interface (i.e. the IRAP and the IRTP in user face of the chain of command shown in Fig. 3) between anchor point and the network node of other standard, by interacting between protocol interface and terminal, it is established that terminal context under multi-standard incidence relation each other.
Embodiment of the method flow process shown in Fig. 4 also comprises the steps:
440: the downlink data of this terminal received, after terminal originating service, is encapsulated, and distributes data according to predetermined strategy to the multi-standard user of terminal binding by anchor point；
The protocol interface that anchor point and terminal are set up is in addition to MTBAP protocol entity, also include MTBUP protocol entity, for transmitting the message data bag of descending multi-standard between anchor point and terminal in an orderly manner, can be according to the terminal link winding time (RTT), the isoparametric measurement of handling capacity and feedback to transmission link, as the reference factor of different systems data distribution.
Wherein, the user face message sequence that the MTBUP protocol entity at anchor point can receive from core network gateway, and stamp sequence number post package and become packet；Or, user face message is directly packaged into packet by the MTBUP protocol entity at anchor point.
450: terminal carries out data merging after receiving the data of the different systems that anchor point issues, to obtain the peak rate of multi-system data transmission.
At message data bag advanced person's row cache that end side MTBUP protocol entity will be received by different systems, any one mode following can be used sequentially to be delivered to upper strata User Agreement by the packet of caching:
(1) deliver according to the user data layer protocol of the order upper layer of sequence number during anchor point packet encapsulation, it is to avoid the throughput that the Congestion Avoidance control that the application layer protocols such as TCP are carried out due to data packet disorder is caused declines.
(2) deliver to upper strata again after directly the packet of caching being ranked up according to the sequence number of the transmission such as TCP/UDP or application layer protocol after identifying Business Stream.
Upper-layer user's agreement packet to being subsequently received carries out data merging.
Fig. 5 is the exemplary system realizing 3G+4G double-standard binding terminal that the present invention provides, and it is the instantiation to the system embodiment shown in Fig. 1；Wherein, 3G standard terminal and 4G standard terminal are bundled and constitute by double-standard binding terminal, by the radio network controller (RNC) of 3G standard as the anchor point (MTBAnchor) of multi-standard system binding, between the base station (eNodeB) of this RNC and 4G standard, introduce X2+ interface (interface i.e. strengthened) based on X2 interface.
As shown in Figure 6, X2+AP is as the IRAP protocol entity of chain of command, GPRS (general packet radio service) tunnel encapsulation user data (GTP_U, GPRSTunellingProtocol_U) agreement provides user face tunnelling function as the protocol entity in user face, other similar tunnel protocols such as generic route encapsulation (GRE, GeneralRoutingEncapsulation) can also be used.On the user face of RNC, eNodeB and double-standard binding terminal, introduce two protocol entities of MTBAP and MTBUP, be respectively used to chain of command and the control in user face.
The present invention is that said system example provides and realizes multi-standard terminal bearing binding and set up process example, and its flow process as shown in Figure 6, comprises the steps:
600: terminal (UE) is initiated the PDP activation of 3G and sets up corresponding packet switch (PS) carrying；
601:UE checks and finds that this terminal supports multi-standard bundle feature, multi-standard terminal (MTB) initialization requests, the network state of circular LTE system and the multi-standard roping capability of this terminal is initiated to network side radio access controller (RNC)；
602: network side RNC returns MTB initialization response；
RNC is by initializing the multi-standard roping capability consulting to know terminal and the network state of current standard.This MTB initialization procedure is to be initiated by terminal in this example.It practice, this MTB initialization procedure actively can also be initiated by network side.
603: terminal is after MTB initializes, if the network state checking LTE system changes, can be to network side RNC status report；
The step for be optional, be not necessary step.
604: anchor point determines the need for initiating to initialize MTB by the load situation etc. set up terminal wireless type of service and state of affairs and terminal and sets up, and is to perform next step；
Anchor point is such as more important according to terminal traffic type and business datum needs bigger transfer rate and terminal to have the standard of support not yet to set up carrying etc., determines that initiating to initialize MTB sets up in order to set up the Deta bearer of other standard supported.
605: anchor point is initiated MTB by MTBAP protocol entity to terminal and set up request；
It is of course also possible to actively initiated MTB to anchor point by terminal by MTBAP protocol entity to set up request.For ease of carrier policy control, it is to be initiated this request by network side in typical case.
606,607: terminal initiates PDP activation and RAB (RAB, the RadioAccessBear) foundation of LTE network (4G standard) according to this request, then returns MTB to anchor point and sets up response, circulates a notice of this carrying and have built up successfully；
608: anchor point is the terminal distribution discernible mark of the overall situation, initiates the request of multi-standard bearing binding to terminal；
Mark for terminal distribution typically uses U-RNTI (mark in UMTS wireless access network).
609: terminal initiates bind request to the base station (eNodeB) of LTE network, and carries overall discernible mark (such as U-RNTI)；
610,611:eNodeB determines the position at anchor point place by terminal iidentification (U-RNTI), initiate bind request by chain of command X2+ interface to anchor point, and in this request, carry (GTP-U) address, tunnel, user face distributed by bearing binding this base station and terminal iidentification (U-RNTI) etc.；
612: anchor point is obtained and the carrying of this node and the associating of context by terminal iidentification (U-RNTI), distributes the user face tunnel address of this node, and returns to eNodeB by binding response, and tunnel, two parties face is successfully established；
613:eNodeB returns the binding response information of binding success to terminal；
614: the MTBUP of anchor point side starts to distribute data to the two of terminal binding standards according to set strategy and the tunnel having built up.
Anchor point can be according to the terminal link winding time (RTT), the isoparametric measurement of handling capacity and feedback to transmission link, as the reference factor of different systems data distribution.
In distribution procedure, some control flows follow-up between the wireless network node of anchor point and additionally standard all obtain association by terminal overall identification (U-RNTI).
Above flow process illustrate the carrying under setting up current standard of the double-standard binding terminal and with this carrying start wireless enjoy business after, the RNC under current standard trigger the initial double-standard bearing binding initiated to terminal according to type of service and network condition.And if terminal is moved in enjoying business procedure when causing community switching or anchor point variation and realizes the flow process of mobile management control the most as shown in Figure 8, Figure 9.
Fig. 8 illustrate the switching of terminal moving process Zhong Jin community and anchor point motionless in the case of the example flow of mobile management, comprise the following steps that
701: switch front base station (OldeNodeB) and determine that switching initiated by needs according to the position of terminal, send handover request to the RNC as anchor point；
702: this RNC determines and allows to switch over, and the data suspending to this base station are transmitted and cancel original bearing binding etc.；
703:RNC sends, to OldeNodeB, the instruction that switching allows；
704～the 708:OldeNodeB switching flows initiating a common LTE
709:UE initiates MTB bind request by MTBAP protocol entity base station (NeweNodeB) after switching after handover success；
710:NeweNodeB distributes the tunnel, user face (GTP-U) of this base station, the terminal iidentification (U-RNTI) carried in asking according to MTB determines anchor point RNC, and initiate MTB bind request by chain of command X2+ interface to anchor point RNC, carried terminal mark (U-RNTI) and GTP_U tunnel information in request；
711: anchor point RNC finds the user face context of binding by terminal iidentification (U-RNTI), distributes the tunnel, user face (GTP_U) of this node, and returns MTB binding response by chain of command X2+ interface to NeweNodeB；
712:NeweNodeB notice OldeNodeB discharges the relevant context of this UE.
Fig. 9 illustrates the example flow of the mobile management in terminal moving process under anchor point change conditions, as follows including detailed step:
801: before switching, according to the position of terminal, former anchor point RNC (OldRNC) determines that needs switch over, first suspend to the data distribution of base station (eNodeB), then initiate the reorientation switching flow of standard；
802:OldRNC initiates MTB weight bind request to eNodeB after reorientation has switched, new anchor point RNC (NewRNC) and the terminal iidentification (U-RNTI) of correspondence after carrying switching in request；
803:eNodeB determines new anchor point NewRNC position according to terminal iidentification (U-RNTI), and initiate MTB bind request to this NewRNC, request is carried tunnel, user face (GTPU) information and the terminal iidentification (U-RNTI) of this base station；
804: new anchor point NewRNC uses the context that terminal iidentification (U-RNTI) association is local, distribute tunnel, this node users face (GTP_U), and return MTB binding response to eNodeB；
805:eNodeB returns MTB binding response to former anchor point OldRNC；
The context that 806: former anchor point OldRNC release is relevant to UE
807: new anchor point NewRNC starts to distribute to the data of eNodeB.
Claims (13)
1. realize a system for multi-standard wireless terminal binding, including core network gateway, the wireless network node of multiple standard and the terminal of multiple standards；Wherein, described core network gateway receives the upstream data of terminal by the wireless network node of this standard and concurrently makes arrangements for his funeral end downlink data；It is characterized in that:
Described terminal, for after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults；
Described wireless network node, for knowing that terminal supports that multi-standard is bound by described initialization negotiation when as the anchor point of cross-mode bearing binding, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, it is established that the incidence relation of this terminal multi-standard context；
Set up for mutual application layer protocol entity, including multi-standard terminal applies part entity and multi-standard terminal use face part entity between the wireless network node and the terminal supporting multi-standard binding of the plurality of standard；And between the wireless network node of the plurality of standard, introducing intersystem interface and corresponding intersystem protocol entity, this intersystem protocol entity includes applying between the system of chain of command tunnel entity between the system in part entity and user face；
Described multi-standard terminal applies part entity and described multi-standard terminal use face part entity is introduced respectively on the wireless network node of the plurality of standard and described terminal respective user face；
Wireless network node as described anchor point obtains the unique identification information under the current standard of described terminal by the multi-standard terminal applies part entity of node side, or newly distribute, for described terminal, unique mark that a cross-mode is unified, and know that described terminal supports information and/or described terminal the supported standard load situation information of multi-standard binding；Saved by the wireless network of described intersystem interface and described intersystem protocol entity with other standard and interact, and by interacting between multi-standard terminal applies part entity and the described terminal of described node side, it is established that the incidence relation of described multi-standard context；
The cross-mode bearing binding of described terminal is to be triggered according to described terminal supported standard load situation information as the wireless network node of anchor point by network side, or is triggered by described terminal.
2. according to the system described in claim 1, it is characterised in that
Support that the terminal that multi-standard is bound is the terminal that multiple terminals with different systems bundle formation, activate data pack protocol to the wireless network node of corresponding standard independently by each terminal of binding, to set up the carrying of described user face data.
3. according to the system described in claim 1, it is characterised in that
In described core network gateway as described cross-mode bearing binding major heading gateway described terminal cross-mode bearing binding set up after, send descending multi-system data stream to the wireless network node as described anchor point, and receive the upstream data that this wireless network node sends；
After receiving described descending multi-system data stream as the wireless network node of described anchor point by the multi-standard terminal use face part entity of node side, according to the measurement of described terminal and the link winding time of feedback and/or the distribution of handling capacity each parameter determination data and strategy thereof, and to the terminal of this standard and/or pass through other standard wireless network node terminal distribution downlink data to corresponding standard according to the strategy determined；
Described terminal receives the downlink data of different systems by the multi-standard terminal use face part entity of end side, and sequentially merges, the downlink data received to obtain the data transmission peak rate of multi-standard.
4. according to the system described in claim 3, it is characterised in that
The described downlink data will distributed before distributing described downlink data as the wireless network node of anchor point sorts and stamps sequence number post package and becomes packet, or the downlink data that will distribute directly is packaged into packet；Described packet is distributed by the multi-standard terminal use face part entity of described node side；
The data pack buffer that described terminal will be received by different systems by the multi-standard terminal use face part entity of described end side, then, the user data layer protocol of described packet upper layer is delivered by the order of the described sequence number encapsulated in described packet according to described wireless network node, or delivers to upper strata User Agreement after being directly ranked up by the packet of caching according to the sequence number of host-host protocol or application layer protocol after identifying the Business Stream of described packet again；Data merging is carried out by the described upper-layer user's agreement packet to being subsequently received.
5. according to the system described in claim 1 or 3, it is characterised in that also include the base station of the wireless network node jurisdiction district as described anchor point, wherein:
After described terminal is completed the switching of the community to this terminal by the described wireless network node as anchor point in moving process, carry out cross-mode carrying by base station after the multi-standard terminal applies part entity triggering switching of end side to the described radio network node request as anchor point heavily to bind, the user face tunnel information that after carrying described terminal iidentification and described switching in this request, base station is distributed；
The described wireless network node as anchor point finds the user face context of binding by described terminal iidentification, distribute the tunnel, user face of this node, and carry, by applying part entity base station after described switching to return described cross-mode between the system of described chain of command, the response heavily bound, base station notice after described switching switch the context that the release of front base station is relevant to described terminal.
6. according to the system described in claim 1 or 3, it is characterised in that also include because described terminal moves the wireless network node as new anchor point and this terminal own base station causing anchor point to change and to occur, wherein:
According to the position that described terminal moves, wireless network node as former anchor point determines that this node to change, first suspend to the data distribution of described base station, then reorientation switching flow is initiated, and after described reorientation has switched, initiate cross-mode bearing binding to this base station heavily ask, request is carried wireless network node and the terminal iidentification of correspondence as new anchor point after switching；The context relevant to described terminal is discharged after receiving the cross-mode carrying weight binding response that described base station returns；
Described base station determines the position of wireless network node as new anchor point according to described terminal iidentification, and to this as the wireless network node initiation cross-mode carrying weight bind request of new anchor point, this request is carried the user face tunnel information of this base station and described terminal iidentification；
Wireless network node as new anchor point uses described terminal iidentification to associate the context that this node is relevant to described terminal, distributes tunnel, this node users face, and returns cross-mode carrying weight binding response by described base station to the wireless network node as former anchor point.
7. according to the system described in claim 2, it is characterised in that
The terminal of described support multi-standard binding is will to have multiple terminals physical ground of different systems or logically bundle the terminal of formation；The wireless standard of the terminal bundled is any two or more in the wireless standard of the long evolving system of second filial generation communication system, third generation communication system, long evolving system and enhancing, and the terminal bundled is two or more.
8. the method realizing the binding of multi-standard wireless terminal, relates to terminal and the wireless network node of multiple standard, and the method includes:
Described terminal, after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults；
If described wireless network node is as the anchor point of cross-mode bearing binding, know that corresponding terminal supports that multi-standard is bound by described initialization negotiation, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, it is established that the incidence relation of this terminal multi-standard context；
Also included before the cross-mode bearing binding of described terminal triggers and sets up:
Set up for mutual application layer protocol entity, including multi-standard terminal applies part entity and multi-standard terminal use face part entity between the wireless network node and the terminal supporting multi-standard binding of the plurality of standard；And between the wireless network node of the plurality of standard, introducing intersystem interface and corresponding intersystem protocol entity, this intersystem protocol entity includes applying between the system of chain of command tunnel entity between the system in part entity and user face；
Described multi-standard terminal applies part entity and described multi-standard terminal use face part entity is introduced respectively on the wireless network node of the plurality of standard and described terminal respective user face；
By described initialization negotiation, described wireless network node as anchor point knows that corresponding terminal supports that multi-standard is bound, and after the cross-mode bearing binding of this terminal triggers and sets up, and interact between the wireless network node of other standard of this terminal binding and this terminal, set up the incidence relation of this terminal multi-standard context, specifically include:
By the multi-standard terminal applies part entity of node side, this wireless network node knows that described terminal supports information and/or this terminal supported standard load situation information of multi-standard binding, obtain the unique identification information under the current standard of this terminal, or newly distribute, for described terminal, unique mark that a cross-mode is unified；
According to described terminal supported standard load situation information or triggered and set up described cross-mode bearing binding by described terminal as the wireless network node of anchor point by network side；
Saved by the wireless network of described intersystem interface and described intersystem protocol entity with other standard as the wireless network node of anchor point and interact, and by interacting between multi-standard terminal applies part entity and the described terminal of described node side, it is established that the incidence relation of described multi-standard context.
The most in accordance with the method for claim 8, it is characterised in that support that the terminal that multi-standard is bound is the terminal that multiple terminals with different systems bundle formation；Described terminal, after setting up user face data carrying with the wireless network node being presently in standard, carries out initializing with this wireless network node and consults, specifically include:
The terminal of described support multi-standard binding activates data pack protocol to the wireless network node of corresponding standard independently by each terminal of binding and carries to set up described user face data；Then, each terminal carries out described initialization negotiation to the wireless network node of corresponding standard independently.
The most in accordance with the method for claim 8, the core network gateway of multiple standard is further related to, it is characterised in that the method also includes:
In described core network gateway, the major heading gateway as described cross-mode bearing binding sends descending multi-system data stream to the described wireless network node as anchor point after described cross-mode bearing binding is set up, and receives the upstream data that this wireless network node sends；
After the described wireless network node as anchor point receives described descending multi-system data stream by the multi-standard terminal use face part entity of node side, according to the measurement of described terminal and the link winding time of feedback and/or the distribution of handling capacity each parameter determination data and strategy thereof, and to the terminal of this standard and/or pass through other standard wireless network node terminal distribution downlink data to corresponding standard according to the strategy determined；
Described terminal receives the downlink data of different systems by the multi-standard terminal use face part entity of end side, and sequentially merges, the downlink data received to obtain the data transmission peak rate of multi-standard.
11. in accordance with the method for claim 10, it is characterised in that the described wireless network node as anchor point distributes downlink data to the terminal of each standard, specifically includes:
The downlink data will distributed before distributing described downlink data sorts and is packaged into packet, or the downlink data that will distribute directly is packaged into packet；Described packet is distributed by the multi-standard terminal use face part entity of described node side；
The downlink data that described end-on is received sequentially merges, and specifically includes:
The data pack buffer that will be received by different systems by the multi-standard terminal use face part entity of described end side, then by the described sequence of described wireless network node, the user data layer protocol of described packet upper layer is delivered, or deliver to upper strata User Agreement again after directly the packet of caching being ranked up by the sequence number of host-host protocol or application layer protocol after identifying the Business Stream of described packet；
The described upper-layer user's agreement packet to being subsequently received carries out data merging.
12. according to the method described in claim 10 or 11, it is characterised in that further relating to the base station of the described wireless network node jurisdiction district as anchor point, the method also includes:
Described terminal in moving process completed by the described wireless network node as anchor point the community to this terminal switching after, carry out cross-mode carrying by base station after the multi-standard terminal applies part entity triggering switching of end side to the described radio network node request as anchor point heavily to bind, the user face tunnel information that after carrying described terminal iidentification and described switching in this request, base station is distributed；
The described wireless network node as anchor point finds the user face context of binding by described terminal iidentification, distribute the tunnel, user face of this node, and carry, by applying part entity base station after described switching to return described cross-mode between the system of described chain of command, the response heavily bound, base station notice after described switching switch the context that the release of front base station is relevant to described terminal.
13. according to the method described in claim 10 or 11, it is characterised in that further relating to because described terminal moves the wireless network node as new anchor point and this terminal own base station causing anchor point to change and to occur, the method also includes:
According to the position that described terminal moves, wireless network node as former anchor point determines that this node to change, first suspend to the data distribution of described base station, then reorientation switching flow is initiated, and after described reorientation has switched, initiate cross-mode bearing binding to this base station heavily ask, request is carried wireless network node and the terminal iidentification of correspondence as new anchor point after switching；
Described base station determines the position of wireless network node as new anchor point according to described terminal iidentification, and initiates cross-mode carrying weight bind request to this wireless network node, carries the user face tunnel information of this base station and described terminal iidentification in this request；
Wireless network node as new anchor point uses described terminal iidentification to associate the context that this node is relevant to described terminal, distribute tunnel, this node users face, and return cross-mode carrying weight binding response by described base station to the described wireless network node as former anchor point；
The described wireless network node as former anchor point discharges the context relevant to described terminal after receiving described cross-mode carrying weight binding response.
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