CN102685714A

CN102685714A - Method and system for supporting double-mode and double-standby terminal to communicate at the same time

Info

Publication number: CN102685714A
Application number: CN2011100669110A
Authority: CN
Inventors: 梁爽; 宗在峰; 卢飞; 朱进国
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2012-09-19
Anticipated expiration: 2031-03-18
Also published as: WO2012126302A1; CN102685714B

Abstract

The invention discloses a method and a system for supporting double-mode and double-standby user equipment (UE) to communicate at the same time. Network elements capable of supporting double-mode terminals are selected to complete the registration when the UE is accessed from a first access system; when the UE is accessed from a second access system, network nodes in the second access system complete bearing synchronization and binding aiming to the UE; and the UE are registered in the two access systems at the same time, so that business can be received and sent at the same time. According to the method and the system, the double-mode terminals can be supported to be accessed to different networks and receive business at the same time; not only can a more flexible data transmission path be realized aiming to the characteristics of different access technologies and the reasonable and full utilization of resources be realized, but also the problems that a single access technology bears too heavy load, the transmission rate is limited and the like are prevented.

Description

A kind of support double-mode and double-standby terminal is method for communicating and system simultaneously

Technical field

The present invention relates to the communications field, be specifically related to a kind of support double-mode and double-standby terminal (UE) method for communicating and system simultaneously.

Background technology

In field of mobile communication, EPS (Evolved Packet System, evolution grouping domain system) and GPRS (General Packet Radio Service, GPRS) network is progressively development.The structural representation of EPS system and gprs system and the intercommunication of EPS system (non-roaming framework) as depicted in figs. 1 and 2.EPS mainly comprises E-UTRAN (Evolved Universal Terrestrial Radio AccessNetwork, the universal terrestrial access network of evolution) and EPC (Evolved Packet Core, the packet-based core networks of evolution) two parts.The EPC of this system can support the access of user from GERAN (GSM EDGEradio access network, GSM EDGE wireless access network) and UTRAN (Universal TerrestrialRadio Access Network, universal land radio access web).

In the EPC packet-based core networks, HSS (Home Subscriber Server, home subscriber data server), MME (Mobility Management Entity have been comprised; Mobility management unit), S-GW (SGW; Serving Gateway, gateway), P-GW (PGW, PDN Gateway; Grouped data network gateway), SGSN (Serving GPRS Support Node; Serving GPRS Support Node) and PCRF (Policyand Charging Enforcement Function, strategy and charging rule functions) entity, wherein:

HSS is the permanent storage place of user contracting data, is positioned at the home network that the user contracts;

MME is the storage place of user contracting data in current network, is responsible for NAS layer (Non-Access Stratum, the Non-Access Stratum) signaling management of terminal to network, tracking and paging management function and the bearer management under user's idle pulley;

S-GW is the gateway that core net arrives wireless system, is responsible for function, legal eavesdropping and grouped data route and forwarding capability that subscriber equipment is initiated service request to user plane bearer, the metadata cache under the idle pulley of terminal, the network side of core net;

P-GW is functions such as the gateway of EPS and this system's external network, the IP address assignment at responsible terminal, billing function, packet package filtration, application of policies.

SGSN is the business support point that GERAN and UTRAN user insert the EPC network, and concrete function and MME are similar, is responsible for user's functions such as position renewal, paging management and bearer management.

GGSN (Gateway GPRS Support Node; GGSN) the edge routing function of support GPRS network; Be that GGSN is responsible for the data of GPRS network are carried out routing forwarding, and protect the integrality of GPRS network data through fire compartment wall and filtering function.GGSN also has billing function.

PGW has comprised the repertoire of GGSN, can think that GGSN as the sub-function of PGW, is embedded in the PGW.Therefore SGSN can directly be connected with PGW, uses the Gn/Gp interface.

HSS/ attaching position register (HLR) is to support to call/the main users database of session.

The GERAN/UTRAN/EUTRAN access network can be passed through in bimodulus or three mould terminals, when various network inserts, needs registration respectively.In the existing framework, the terminal is inserted from Long Term Evolution (LTE) system earlier, and as shown in Figure 3 from the flow process of GERAN/UTRAN access network again, this flow process may further comprise the steps:

Step 301, is used attach request and is initiated attaching process to be registered in the core net when the user starts shooting to 302.(eNodeB eNB) is encapsulated in the initialization user message of S1 interface and brings MME this non-access layer information by the base station.

Step 303, if there is not user's contextual information in the network, perhaps Attach Request message does not have integrity protection, perhaps integrity protection failure, the MME in the core net carries out the authentication process to the user so.

Step 304, is so just sent to home subscriber server and is upgraded location request message, comprising information such as mobility management unit sign, ID, updating types if there is not user's subscription data among the MME to 305.User data server sends to MME to user contracting data in upgrading the position response message, comprising signatory APN, and the service quality of each APN default bearing (QoS) parameter.

Step 306 is to 307, and is always online in order to support the user, and MME sets up the default bearing of core-network side between S-GW and P-GW with the qos parameter of signatory default bearing.MME sends to PGW through SGW and creates conversation request, wherein carries the relevant qos parameter of default bearing, relevant parameters such as charging characteristic.PGW authorizes the carrying QoS of request, and sends the establishment conversational response through SGW to MME.

Step 308; The core-network side default bearing will activate corresponding radio bearer after setting up and accomplishing; MME sets up the context of request message with UE through initial context, and the bearer QoS parameters of being set up sends to the base station, adheres to accept message and also be encapsulated in this message and issue the user.Adhere to and accept to carry casual user's sign that MME distributes to UE in the message, and set up the context request of carrying for UE.

Step 309 is to 310, and corresponding empty port load-supporting is set up according to the beared information of core net indication in the base station.

After step 311, empty port load-supporting were set up and accomplished, the base station was replied initial context and is set up response message with the notice core net.

Step 312, UE returns registration through the base station to MME and accomplishes message.

Step 313, UE moves to UTRAN (GERAN also is suitable for, and this flow process is example with UTRAN).UE sends the Routing Area Update request message through radio network controller (RNC) to SGSN, wherein carries effective casual user's sign.

Step 314, SGSN finds the original MME that registers of UE according to casual user's sign of UE, and sends context request message to it.

Step 315, MME carries out verification to UE, and the context of UE is sent in verification to SGSN through the back.

Step 316, SGSN receives that returning context to MME behind the context of UE replys.

Step 317 is to 318, if UE has activated carrying, then SGSN upgrades the PDP Context request to GGSN (PGW has comprised the function of GGSN) renewal PDP Context through sending.Upgrade the TEID and the IP address of carrying new SGSN in the PDP Context request, GGSN preserves these information, and returns renewal PDP response to new SGSN, TEID and the IP address of also upgrading MME with TEID and the IP address of SGSN.

Step 319 is to 322, and SGSN sends position updating request to HSS, wherein carries the sign of new SGSN, and HSS will preserve this sign.HSS inserts subscription data to SGSN.

Step 323, SGSN confirms that UE is effective in current route district, sends Routing Area Update to UE and accepts message, wherein carries the P-TMSI into UE assignment again.

Step 324, UE returns Routing Area Update to SGSN and accomplishes message, confirms that P-TMSI is effective.It is invalid that UE can be designated the relevant information of MME.

Step 325 is to 326, and HSS sends the canceling position request to MME, and MME is after HSS returns response, and HSS no longer preserves the sign of MME.

Step 325 is to 326, and MME sends the deletion conversation request to SGW.SGW and MME can be with relevant bearer context deletions.

Introduce the initial stage at LTE; Reason owing to the wireless frequency spectrum interference; But most of terminal all is aforesaid multimode singly accesses terminal; This can cause UE simultaneously can only carry out business even can only be at a network registry at a network, and then causes in multiple wireless access technology (RAT) with the regional waste of radio resources that covers.Along with the development of technology, the air interference problem no longer is to hinder the significant obstacle of dual-mode terminal development, and how operator and equipment commercial city support dual-mode terminal to insert various network simultaneously in research, receive professional simultaneously.But the corresponding techniques support does not appear at present as yet.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of support double-mode and double-standby terminal method for communicating and system simultaneously, supports that dual-mode terminal inserts various network simultaneously, receives professional simultaneously.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of support double-mode and double-standby terminal UE is method for communicating simultaneously, and this method comprises:

UE inserts from first connecting system, and selection can support the network element of dual-mode terminal to accomplish registration; And UE inserts from second connecting system, and network node is accomplished to UE and carried synchronously and bind in second connecting system;

UE keeps login state at two connecting systems simultaneously, so that can receive and send business simultaneously.

Register from GSM EDGE wireless access network GERAN/ universal land radio access web UTRAN earlier at the terminal, and when Long Term Evolution LTE system registered, said first connecting system was GERAN/UTRAN again, and said second connecting system is the LTE system;

Said UE inserts from first connecting system, and the process that selection can support the network element of dual-mode terminal to accomplish registration comprises:

UE initiates attach request to be registered in the core net; Through after the authentication process to the user, SGSN returns registration to UE and accepts message.

Said UE inserts from second connecting system, and network node is accomplished to carry synchronously to UE and comprised with the process of binding in second connecting system:

UE initiates to adhere to/tracing section updating TAU flow process, in order to be implemented in the registration of EUTRAN; Mobility Management Entity MME carries out authentication and carries out contextual obtaining UE; Also select proper service gateway SGW/ grouped data network gateway PGW; And trigger PGW and carry out bearing activation; The address information of the PGW that perhaps based on context obtains in the acquisition process is initiated to the bearing modification process of PGW, and being carried on of in first connecting system, having set up set up in second connecting system or revised, and accomplishes the bearing binding of two connecting systems.

After said first connecting system was accomplished registration, UE also needed in first connecting system, to initiate loading establishing process, and this method further comprises: UE initiates the PDP context activation flow process at first connecting system.

Register from LTE earlier at the terminal, and when GERAN/UTRAN registered, said first connecting system was the LTE system again, and said second connecting system is GERAN/UTRAN;

The UE attach request is to be registered in the core net; Through after the authentication process to the user, the MME initiation session is set up process.

UE initiates to adhere to/and the routing area updating RAU request is in order to be implemented in the registration of GERAN/UTRAN; UE sends RAU request/attach request, SGSN in view of the above to UE carry out contextual obtain and the authentication process after, and initiate to create the process of session/modification carrying; Also trigger PGW and carry out bearing activation; Perhaps based on context in the address information of PGW be initiated to the bearing modification process of PGW; Being carried on of setting up in first connecting system set up in second connecting system or revised, accomplish the bearing binding of two connecting systems.

This method further comprises:

UE carries and whether supports the dual-mode terminal indication of communication function simultaneously when access network.

This method further comprises:

In the TAU request/RAU request/attach request that UE sends, carry the indication that the UE request is registered two systems simultaneously;

Said indication realizes through in described request message, increasing new information element IE, perhaps realizes in the value of interior existing IE through extension packets explanatory note in brackets volume/TAU type I E.

This method further comprises:

If UE activates and hope to use at two connecting systems and carry, then when UE when second connecting system inserts, need carry relevant bearing identification;

The mobile management unit that comprises SGSN or MME is carried out bearing binding according to said bearing identification.

This method further comprises:

The mobile management unit that comprises SGSN or MME is in obtaining contextual process, and in context request message or context acknowledge message, whether registration and/or beared information before the notification source SGSN be effective.

A kind of system that supports that double-mode and double-standby terminal UE communicates by letter simultaneously, this system comprise UE, first connecting system, second connecting system; Wherein,

UE is used for inserting from first connecting system, and selection can support the network element of dual-mode terminal to accomplish registration; And, insert from second connecting system, and keep login state at two connecting systems simultaneously, so that can accept and send business simultaneously;

Said second connecting system is used for accomplishing the synchronous and binding of carrying by its network node to UE.

Register from GERAN/UTRAN earlier at the terminal, and when the LTE system registered, said first connecting system was GERAN/UTRAN again, and said second connecting system is the LTE system;

Said UE inserts from first connecting system, when selection can support that the network element of dual-mode terminal is accomplished registration, is used for:

Initiate attach request to be registered in the core net; Through the authentication process to the user, triggering SGSN returns registration to UE and accepts message.

Said UE inserts from second connecting system, when network node is directed against UE completion carrying synchronously with binding in second connecting system,

Said UE, be used for initiating to adhere to/the TAU request is implemented in the registration of EUTRAN; Triggering MME carries out authentication and carries out contextual obtaining UE; Also select suitable PGW and trigger PGW execution bearing activation; Perhaps based on context in the acquisition process address information of PGW be initiated to the bearing modification process of PGW; To the foundation carrying or the modification in second connecting system of being carried on of in first connecting system, having set up, accomplish the bearing binding of two connecting systems.

After said first connecting system was accomplished registration, said UE was further used in first connecting system, initiating following loading establishing process: initiate the PDP context activation flow process at first connecting system.

Initiate attach request to be registered in the core net; Through authentication process, trigger the MME initiation session and set up process the user.

Said UE, be used for using adhere to/the RAU request is implemented in the registration of GERAN/UTRAN, trigger SGSN and carry out contextual obtaining and the authentication process through sending RAU request/attach request, and initiate to create the process of session/modification carrying to UE; Also trigger PGW and carry out bearing activation; Perhaps based on context in the address information of PGW be initiated to the bearing modification process of PGW; Being carried on of setting up in first connecting system set up in second connecting system or revised, accomplish the bearing binding of two connecting systems.

UE is further used for carrying the indication of whether supporting dual-mode terminal while communication function when access network.

Said UE is further used for:

In the TAU request/RAU request/attach request of sending, carry the indication that the UE request is registered two systems simultaneously;

Said indication realizes through in described request message, increasing new IE, perhaps realizes in the value of interior existing IE through extension packets explanatory note in brackets volume/TAU type I E.

Said UE is further used for:

If UE activates and hope to use at two connecting systems and carry, then when UE when second connecting system inserts, carry relevant bearing identification; Triggering comprises that the mobile management unit of SGSN or MME is according to said bearing identification execution bearing binding.

The said mobile management unit that comprises SGSN or MME is further used in context request message or context acknowledge message when obtaining context, and whether registration and/or beared information before the notification source SGSN be effective.

The inventive method and system can support effectively that dual-mode terminal inserts various network simultaneously, receive professional simultaneously.Problems such as the characteristics that can either be directed against different access technologies realize data transfer path more flexibly, realize reasonable resources and make full use of, and enough avoid single access technology overload again, and transmission rate is limited.

Description of drawings

Fig. 1 is the structural representation of EPS under non-roaming situation;

Fig. 2 is the structural representation of GPRS network and EPS network interworking;

Fig. 3 is the flow chart that multimode terminal inserts from two Access Networks respectively in the prior art;

The system diagram that Fig. 4 communicates by letter for the support double-mode and double-standby terminal of one embodiment of the invention simultaneously;

The system diagram that Fig. 5 communicates by letter for the support double-mode and double-standby terminal of another embodiment of the present invention simultaneously;

The flow chart that Fig. 6 communicates by letter for the support double-mode and double-standby terminal of one embodiment of the invention simultaneously;

The flow chart that Fig. 7 communicates by letter for the support double-mode and double-standby terminal of another embodiment of the present invention simultaneously;

The general flow chart that Fig. 8 communicates by letter for the support double-mode and double-standby terminal of the embodiment of the invention simultaneously.

Embodiment

In practical application, UE can insert from first connecting system, and selection can be supported the network element of dual-mode terminal, accomplishes registration; And UE can also insert from second connecting system, and network node can be accomplished to UE and carry synchronously and bind in second connecting system; After the aforesaid operations success, UE keeps login state at two connecting systems simultaneously, and can accept and send business simultaneously.

Below in conjunction with accompanying drawing embodiments of the invention are elaborated.

Execution mode one:

Referring to Fig. 4, Fig. 4 is one of configuration diagram of the method for the invention application.

Among Fig. 4, the terminal is through the UTRAN/GERAN/LTE access network, and wherein, the core network element that UTRAN and GERAN insert is Gn/Gp SGSN and GGSN (PGW has comprised the function of GGSN).When the terminal when different Access Network inserts, connect if be established to the PDN of same APN, then anchor point is at PGW/GGSN.UE is linked into same PDN when connecting from two RAT, uses same PGW/SGSN addresses distributed.

Execution mode two:

Referring to Fig. 5, Fig. 5 is two of the configuration diagram used of the method for the invention.

Among Fig. 5, the terminal is through the UTRAN/GERAN/LTE access network, and wherein, the core network element that UTRAN and GERAN insert is S4SGSN, SGW and PGW.When the terminal when different Access Network inserts, connect if be established to the PDN of same APN, then anchor point is at PGW/GGSN.UE is linked into same PDN when connecting from two RAT, uses same PGW/SGSN addresses distributed.

At this moment, UE inserts from different RAT, can select same SGW; Certainly, also can select different SGW, promptly MME and SGSN select SGW respectively.

Execution mode three:

Referring to Fig. 6, Fig. 6 utilizes method of the present invention, realizes one of schematic flow sheet that multimode terminal inserts from two Access Networks respectively.In the present embodiment, suppose that terminal elder generation registers from GERAN/UTRAN, and then register from LTE.SGSN in the present embodiment is the SGSN that supports the Gn/Gp interface.Present embodiment specifically may further comprise the steps:

Step 601, is used attach request and is initiated attaching process to be registered in the core net when the user starts shooting to 602.

This non-access layer information sends to SGSN after being encapsulated by RRC or base station sub-system (BSS).

Step 603, if there is not user's contextual information in the network, perhaps Attach Request message does not have integrity protection, perhaps integrity protection failure, SGSN carries out the authentication process to the user so.

Step 604 if there is not user's subscription data among the SGSN, so just sent to home subscriber server and is upgraded location request message, comprising information such as mobility management unit sign, ID, updating types.User data server carries out verification to the request of SGSN, if pass through, then HSS inserts the subscription data request, sends user's subscription data to SGSN, comprising signatory APN, and the relevant qos parameter of each APN.SGSN to HSS return insert subscription data and reply after, HSS upgrades to the SGSN home position and replys.

Step 605, SGSN returns registration to UE and accepts message, wherein carries the casual user's identification information that distributes into UE.UE returns registration to SGSN and accomplishes message.Wherein registration is accepted message and can also be comprised this function that network side supports that dual-mode terminal communicates simultaneously.This indication can perhaps increase new IE and realize through IE (information element) value in the existing message of expansion.

If it is professional that UE hopes under this RAT, to initiate immediately, then carry out the PDP activation process; Otherwise skips steps 606 to 608, execution in step 609.

Step 606, UE initiates the PDP activation process, sends the PDP context activation request through RNC/BSS to SGSN, wherein carries the APN that the UE request is set up, and the qos parameter of request.

Step 607, SGSN is that UE selects suitable GGSN according to APN.SGSN sends the PDP context activation request to GGSN, wherein carries the relevant parameters such as APN and QoS of sign, the request of UE.GGSN carries out authorization check to qos parameter.After activating successfully, GGSN returns the PDP context activation response to SGSN.Wherein carry the QoS of mandate, and the parameters such as IP address of UE.

Step 608, SGSN returns the PDP context activation response through RNC/BSS to UE, and RNC/BSS also need set up radio bearer.Wherein the PDP context activation response message can also comprise this function that network side supports that dual-mode terminal communicates simultaneously.This indication can perhaps increase new IE and realize through the IE value in the existing message of expansion.

Step 609; UE moves under the covering of EUTRAN, if hope to accept business from EUTRAN simultaneously, then uses and adheres to/TAU (Tracking Area update; Tracing section updating) request initiating updating of tracking area flow process or register flow path are to carry out the registration at EUTRAN.This adheres to/and the TAU request message sends to MME after by the eNB encapsulation.

Step 610, eNB is routed to suitable MME with TAU request/attach request.

If UE hopes and some bearing binding before, then UE also need carry the bearing identification that carries of binding.

Further, the TAU request/attach request that UE sends can also comprise indication, shows that UE hopes simultaneously two RAT registrations.This indication can perhaps realize through the value that expands existing IE, for example extended registration/TAU type I E through in request, increasing new IE.

Step 611, MME carries out the authentication process to the user.

In this process, UE and network side can not shine upon safe context, to guarantee that UE is separate in the generation of two RAT authentications and Key.

Step 612, MME indicates to judge how to obtain context according to the registration or the TAU type of carrying in registration or the TAU request message.

If it is effective in the request of two RAT registrations that the entrained indication type of attach request shows UE, then MME need go SGSN to obtain context.

If utilize the TAU process, then, therefore need not special judgement here because the TAU process is carried out context and obtained.

Thus it is clear that, in the step 612,, then judge whether to obtain context according to request type if utilize attachment flow; If utilize the TAU process, then always obtain context.The main of this process is the ability of exchcange core net at present, avoids the bearing identification conflict, obtains the PGW address.

The described request type possibly be binary channels (dual radio), and the purpose of request is to support to set up binary channels, but the title of request type is not limited to therewith.

Step 613, MME finds the original SGSN that registers of UE according to the casual user's sign that is included in the UE in the TAU request, and sends context request message to it.SGSN carries out verification to UE, and the context of UE is sent in verification to MME through the back.MME receives that returning context to SGSN behind the context of UE replys.

In this process, whether if do not notify the network of registering before the MME to support dual-mode terminal to insert the function of two networks simultaneously before the UE, then SGSN can notify MME whether to support this function through context response information.

Whether MME need perhaps support this function to notify MME to source SGSN in the context acknowledge message in context request message.If MME do not support, then SGSN will be according to the flow process of prior art, after carry out contextual deletion.Otherwise registration and bearer related information before SGSN need confirm are still effective.Present embodiment hypothesis MME supports this function.

Step 614, MME sends to HSS and upgrades location request message, comprising information such as mobility management unit sign, ID, updating types.User data server sends to MME to user contracting data in upgrading the position response message, comprising signatory APN, and the qos parameter of each APN default bearing.

Step 615, whether MME has the beared information of activation according to the context determination UE that obtains from SGSN.If carried out step 606 to 608 before, then UE has the context of activation, and MME need also set up these contexts at EPS.At this moment, MME selects identical PGW according to the UE contextual information.In addition, MME selects SGW according to positional information.

If UE does not have the context of activation, then a contextual requirement must be arranged according to EPS, MME is that UE sets up new context, the mode of the PGW of this function of selection support and SGW is identical with prior art so.

Step 615 is to 619, if newly-built carrying, MME sends to PGW through SGW and creates conversation request, wherein carries relevant parameters such as the relevant qos parameter of default bearing, charging characteristic.If MME sets up the existing carrying of UE at EPS, then this MME send to create conversation request message to SGW, and SGW sends to PGW and revises bearing request message, wherein need indicate the RAT information of the current access of PGW, and with the indication information of two RAT bearing bindings.Likewise, this indication can realize through expanding existing IE or increasing IE newly.

Step 621, PGW is according to the type of message of receiving, and the indication information that wherein comprises judgement execution bearing activation, or the another one RAT that is carried on that has set up is set up and accomplishes and bind.

It is thus clear that in the step 621, PGW needs to distinguish the dual radio or the situation of single channel (single radio).

Step 622 is to 623, and PGW authorizes the carrying QoS of request, and sends establishment session (perhaps revise and carry) response through SGW to MME.

Step 624, MME returns TAU/ to UE and adheres to and accept message, and this message indicates whether to support dualradio, wherein carries casual user's sign of distributing into UE.Return TAU/ to MME after UE receives and adhere to completion message.TAU/ adheres to and accepts in the message, can also comprise network and whether allow/ accepted the indication of UE two RAT registrations.

This step also can be to set up radio bearer for UE.

Further, can also be all effective to two RAT, perhaps only effectively carry and carry out synchronously at certain RAT.

After this process finished, UE in the registration of two RAT simultaneously effectively follow-uply can initiate business respectively from two RAT.

Execution mode four:

Referring to Fig. 6, Fig. 6 utilizes method of the present invention, realizes one of schematic flow sheet that multimode terminal inserts from two Access Networks respectively.In the present embodiment, suppose that terminal elder generation registers from GERAN/UTRAN, and then register from LTE.SGSN in the present embodiment is the SGSN that supports the S4 interface.

In the present embodiment and the main difference of execution mode three be embodied in the interface between SGSN and the GGSN.S4SGSN need link to each other with PGW through SGW, therefore exists the step of main difference to be:

In the step 607, SGSN need select SGW and PGW.

In the step 608, SGSN send to create conversation request through SGW to PGW, wherein carries the relevant parameters such as qos parameter, charging characteristic of ID, request.PGW authorizes the carrying QoS of request, and sends the establishment conversational response through SGW to SGSN.

Execution mode five:

Referring to Fig. 7, Fig. 7 utilizes method of the present invention, realizes one of schematic flow sheet that multimode terminal inserts from two Access Networks respectively.In the present embodiment, suppose that terminal elder generation registers from LTE, and then register from GERAN/UTRAN.SGSN in the present embodiment is the SGSN that supports the S4 interface.Present embodiment specifically may further comprise the steps:

Step 701, is used attach request and is initiated attaching process to be registered in the core net when the user starts shooting to 702.This non-access layer information sends to MME after being encapsulated by S1.

Step 703, if there is not user's contextual information in the network, perhaps Attach Request message does not have integrity protection, perhaps integrity protection failure, MME carries out the authentication process to the user so.

Step 704, if MME does not have the subscription data of UE, then MME sends to HSS and upgrades location request message, comprising information such as mobility management unit sign, ID, updating types.User data server sends to MME to user contracting data in upgrading the position response message, comprising signatory APN, and the qos parameter of each APN default bearing.

Step 705, MME need select SGW and PGW according to APN and positional information.

Step 705 is to 708, and MME sends to PGW through SGW and creates conversation request, wherein carries the relevant qos parameter of default bearing, relevant parameters such as charging characteristic.PGW authorizes the carrying QoS of request, and sends the establishment conversational response through SGW to MME.

Step 709, MME returns registration to UE and accepts message, wherein carries casual user's sign of distributing into UE.Return registration to MME after UE receives and accomplish message.Adhere to and accept to comprise in the message indication whether network supports that UE registers at two RAT.This indication can perhaps increase new IE and realize through the IE value in the existing message of expansion.

Also can be in this step for UE set up radio bearer, these all are prior aries conventionally known to one of skill in the art, do not do and give unnecessary details.

Step 710 is to 711; UE moves under the covering of GERAN/UTRAN; If it is professional that hope receives from GERAN/UTRAN simultaneously, then use and adhere to/RAU (Routing Area Update) request initiation Routing Area Update flow process or register flow path, to carry out registration at GERAN/UTRAN.This adheres to/and the RAU request message sends to SGSN after by the RNC/BSS encapsulation.

Further, UE sends RAU request/attach request, wherein can also comprise indication UE and hope simultaneously two RAT registrations.This indication can perhaps realize through the value that expands existing IE, for example extended registration/RAU type I E through in request, increasing new IE.

Step 712, SGSN indicates to judge how to obtain context according to the registration or the RAU type of carrying in registration or the RAU request message.

Request is registered at two RAT if the indication type that attach request is carried is UE, and then MME need go SGSN to obtain context.

If utilize the RAU process, then, therefore need not special judgement here because the RAU process is carried out context and obtained.

Thus it is clear that, in the step 710,, then judge whether to obtain context according to request type (dual radio) if utilize attachment flow; If utilize the TAU process, then always obtain context.The main purpose of this process is the ability of exchcange core net, avoids the bearing identification conflict, obtains the PGW address.

The described request type possibly be binary channels (dual radio), and the purpose of request is to support to set up binary channels, but the title of request type do not limit to therewith, the purpose of request is to support to set up binary channels, but the title of request type is not limited to therewith.

Step 713, SGSN finds the original MME that registers of UE according to the casual user's sign that is included in the UE in the RAU request, and sends context request message to it.MME carries out verification to UE, and the context of UE is sent in verification to SGSN through the back.SGSN receives that returning context to MME behind the context of UE replys.

In this process, whether if do not notify the network of registering before the MME to support dual-mode terminal to insert the function of two networks simultaneously before the UE, then MME can notify SGSN whether to support this function through context response information.

Whether SGSN need perhaps will support this function to notify to source MME in context request message in the context acknowledge message.If do not support, then MME will be according to the flow process of prior art, after carry out contextual deletion.Otherwise registration and bearer related information before MME need confirm are still effective.Present embodiment hypothesis MME supports this function.

Step 714, SGSN carries out the authentication process to the user.In this process, UE and network side can not shine upon safe context, to guarantee that UE is separate in the generation of two RAT authentications and Key.

Step 715, SGSN inserts and sets up corresponding carrying according to the beared information that comprises in the context that obtains at UTRAN/GERAN.At this moment, SGSN can select same SGW with MME, also can be different.If the new SGW that selects will consider the UE current position information so equally.

If SGSN has reselected SGW, then SGSN sends to new SGW and creates conversation request, and the sign of wherein carrying UE is carried the relevant parameters such as RAT of relevant qos parameter, charging characteristic, access.

If SGSN does not select new SGW, then SGSN is to the SGW request of send to revise carrying, wherein carry UE sign, carry the relevant parameters such as RAT of relevant qos parameter, charging characteristic, access.This revises the request of carrying needs indication SGW also effective at the beared information of another RAT.

Step 716, SGW is to the PGW request of send to revise carrying, wherein carry UE sign, carry the relevant parameters such as RAT of relevant qos parameter, charging characteristic, access.Wherein need indicate the RAT information of the current access of PGW, and with the indication information of two RAT bearing bindings.Likewise, this indication can realize through expanding existing IE or increasing IE newly.

Step 717, PGW is according to the type of message of receiving, and the indication information that wherein comprises judgement execution bearing activation, or the another one RAT that is carried on that has set up is set up and accomplishes and bind.

Step 718 is to 719, and PGW authorizes the carrying QoS of request, and sends modification carrying (establishment session) response message through SGW to SGSN.

Step 720 if there is not user's subscription data among the SGSN, so just sent to home subscriber server and is upgraded location request message, comprising information such as mobility management unit sign, ID, updating types.User data server carries out verification to the request of SGSN, if pass through, then HSS inserts the subscription data request, sends user's subscription data to SGSN, comprising signatory APN, and the relevant qos parameter of each APN.SGSN to HSS return insert subscription data and reply after, HSS upgrades to the SGSN home position and replys.

Step 721, SGSN returns the RAU/ registration to UE and accepts message, wherein carries the casual user's identification information that distributes into UE.

Step 722, UE returns the RAU/ registration to SGSN and accomplishes message.RAU/ adheres to and accepts in the message, can also comprise network and whether allow/ accepted the indication of UE two RAT registrations.

Execution mode six:

Referring to Fig. 7, Fig. 7 utilizes method of the present invention, realizes one of schematic flow sheet that multimode terminal inserts from two Access Networks respectively.In the present embodiment, suppose that terminal elder generation registers from LTE, and then register from GERAN/UTRAN.SGSN in the present embodiment is the SGSN that supports the Gn/Gp interface.

In the present embodiment and the main difference of execution mode five be embodied in the interface between SGSN and the PGW.Do not have SGW between Gn/Gp SGSN and the GGSN, therefore exist the step of main difference to be:

Step 715 is to 716, and SGSN sends to GGSN and upgrades the PDP Context request, wherein carry ID, request qos parameter, charging characteristic, insert relevant parameter such as RAT.This request needs indication GGSN also effective at the beared information of another RAT.

Step 718 is to 719, and GGSN returns to SGSN and upgrades the PDP Context response, wherein carries the qos parameter of mandate.

Can know that in conjunction with above each embodiment the operation thinking that the present invention supports double-mode and double-standby terminal to communicate by letter simultaneously can be represented flow process as shown in Figure 8, this flow process may further comprise the steps:

Step 810:UE inserts from first connecting system, and selection can support the network element of dual-mode terminal to accomplish registration.

Step 820:UE inserts from second connecting system, and network node is accomplished to UE and carried synchronously and bind in second connecting system.

Step 830:UE keeps login state at two connecting systems simultaneously, so that can accept and send business simultaneously.

Visible by above embodiment, system of the present invention comprises UE, first connecting system, second connecting system; Wherein, UE is used for inserting from first connecting system, and selection can support the network element of dual-mode terminal to accomplish registration; And, insert from second connecting system, and keep login state at two connecting systems simultaneously, so that can accept and send business simultaneously; Said second connecting system is used for accomplishing the synchronous and binding of carrying by its network node to UE.

Register from GERAN/UTRAN earlier at the terminal, and when the LTE system registered, said first connecting system was GERAN/UTRAN again, and said second connecting system is the LTE system; Said UE inserts from first connecting system, when selection can support that the network element of dual-mode terminal is accomplished registration, is used for: initiate attach request to be registered to core net; Through the authentication process to the user, triggering SGSN returns registration to UE and accepts message.

Said UE inserts from second connecting system, and network node is accomplished to UE and carried synchronously when binding in second connecting system, said UE, be used for initiating to adhere to/the TAU request is implemented in the registration of EUTRAN; Triggering MME carries out authentication and carries out contextual obtaining UE; Also select suitable PGW and trigger PGW execution bearing activation; Perhaps based on context in the acquisition process address information of PGW be initiated to the bearing modification process of PGW; To the foundation carrying or the modification in second connecting system of being carried on of in first connecting system, having set up, accomplish the bearing binding of two connecting systems.

Register from LTE earlier at the terminal, and when GERAN/UTRAN registered, said first connecting system was the LTE system again, and said second connecting system is GERAN/UTRAN; Said UE inserts from first connecting system, when selection can support that the network element of dual-mode terminal is accomplished registration, is used for: initiate attach request to be registered to core net; Through authentication process, trigger the MME initiation session and set up process the user.

Said UE inserts from second connecting system; When network node is directed against UE completion carrying synchronously with binding in second connecting system; Said UE; Be used for using adhere to/the RAU request is implemented in the registration of GERAN/UTRAN, trigger SGSN and carry out contextual obtaining and the authentication process through sending RAU request/attach request, and initiate to create the process of session/modification carrying to UE; Also trigger PGW and carry out bearing activation; Perhaps based on context in the address information of PGW be initiated to the bearing modification process of PGW; Being carried on of setting up in first connecting system set up in second connecting system or revised, accomplish the bearing binding of two connecting systems.

Said UE is further used for: in the TAU request/RAU request/attach request of sending, carry the indication that the UE request is registered two systems simultaneously; Said indication realizes through in described request message, increasing new IE, perhaps realizes in the value of interior existing IE through extension packets explanatory note in brackets volume/TAU type I E.

Said UE is further used for: if UE activates and hope to use at two connecting systems and carry, then when UE when second connecting system inserts, carry relevant bearing identification; Triggering comprises that the mobile management unit of SGSN or MME is according to said bearing identification execution bearing binding.

Visible in sum, no matter be method or system, the technology that support double-mode and double-standby terminal provided by the invention is communicated by letter simultaneously can support effectively that dual-mode terminal inserts various network simultaneously, receives professional simultaneously.Problems such as the characteristics that can either be directed against different access technologies realize data transfer path more flexibly, realize reasonable resources and make full use of, and enough avoid single access technology overload again, and transmission rate is limited.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. support double-mode and double-standby terminal UE method for communicating simultaneously for one kind, it is characterized in that this method comprises:

2. method according to claim 1; It is characterized in that; Register from GSM EDGE wireless access network GERAN/ universal land radio access web UTRAN earlier at the terminal; When Long Term Evolution LTE system registered, said first connecting system was GERAN/UTRAN again, and said second connecting system is the LTE system;

3. method according to claim 2 is characterized in that said UE inserts from second connecting system, and network node is accomplished to carry synchronously to UE and comprised with the process of binding in second connecting system:

4. method according to claim 2; It is characterized in that; After said first connecting system was accomplished registration, UE also needed in first connecting system, to initiate loading establishing process, and this method further comprises: UE initiates the PDP context activation flow process at first connecting system.

5. method according to claim 1 is characterized in that, register from LTE earlier at the terminal, and when GERAN/UTRAN registered, said first connecting system was the LTE system again, and said second connecting system is GERAN/UTRAN;

6. method according to claim 5 is characterized in that said UE inserts from second connecting system, and network node is accomplished to carry synchronously to UE and comprised with the process of binding in second connecting system:

7. method according to claim 1 is characterized in that, this method further comprises:

8. according to claim 3 or 5 described methods, it is characterized in that this method further comprises:

9. according to claim 3 or 5 described methods, it is characterized in that this method further comprises:

10. according to claim 3 or 5 described methods, it is characterized in that this method further comprises:

11. a system that supports that double-mode and double-standby terminal UE communicates by letter simultaneously is characterized in that, this system comprises UE, first connecting system, second connecting system; Wherein,

12. system according to claim 11 is characterized in that, register from GERAN/UTRAN earlier at the terminal, and when the LTE system registered, said first connecting system was GERAN/UTRAN again, and said second connecting system is the LTE system;

13. system according to claim 12 is characterized in that, said UE inserts from second connecting system, when network node is directed against UE completion carrying synchronously with binding in second connecting system,

14. system according to claim 12 is characterized in that, after said first connecting system was accomplished registration, said UE was further used in first connecting system, initiating following loading establishing process: initiate the PDP context activation flow process at first connecting system.

15. system according to claim 11 is characterized in that, register from LTE earlier at the terminal, and when GERAN/UTRAN registered, said first connecting system was the LTE system again, and said second connecting system is GERAN/UTRAN;

16. system according to claim 15 is characterized in that, said UE inserts from second connecting system, when network node is directed against UE completion carrying synchronously with binding in second connecting system,

17. system according to claim 11 is characterized in that, UE is further used for carrying the indication of whether supporting dual-mode terminal while communication function when access network.

18., it is characterized in that said UE is further used for according to claim 13 or 15 described systems:

19., it is characterized in that said UE is further used for according to claim 13 or 15 described systems:

20. according to claim 13 or 15 described systems; It is characterized in that; The said mobile management unit that comprises SGSN or MME is when obtaining context; Be further used in context request message or context acknowledge message, whether registration and/or beared information before the notification source SGSN be effective.