CN103002543B - A kind of multi-access method and system - Google Patents
A kind of multi-access method and system Download PDFInfo
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- CN103002543B CN103002543B CN201110270844.4A CN201110270844A CN103002543B CN 103002543 B CN103002543 B CN 103002543B CN 201110270844 A CN201110270844 A CN 201110270844A CN 103002543 B CN103002543 B CN 103002543B
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Abstract
The invention discloses a kind of multi-access method and system, UE sends multiple access by 3GPP access network to P GW and indicates, and notice P GW performs multiple access binding；P GW indicates according to this multiple access, performs the multiple access binding with two or more access networks.Use the present invention, making P GW can indicate the access scene knowing terminal according to the multiple access received is multiple access scene, thus when receiving the bind request of the second access network, performs multiple access binding, realize the multiple access of terminal, it is to avoid impact and the amendment on non-3 GPP network.
Description
Technical field
The present invention relates to mobile communication technology field, particularly relate to a kind of multi-access method and system.
Background technology
Third generation partner program (3rd Generation Partnership Project, referred to as 3GPP) evolution
Grouping system (Evolved Packet System, referred to as EPS) main by access network and the packet-based core networks of evolution
(EPC) composition.As it is shown in figure 1, EPS access network can be E-UTRAN (Evolved Universal Terrestrial
Radio Access Network, the universal land radio access web of evolution) or UTRAN (Universal Terrestrial
Radio Access Network, universal land radio access web) etc.；EPC includes: MME (mobile management unit, Mobility
Management Entity), SGSN (Serving GPRS (General Packet Radio Service, general packet without
Line services) Support Node, Serving GPRS Support Node), S-GW (gateway, Serving Gateway), P-GW
(Packet Data Network Gateway, grouped data network gateway), HSS (home subscriber server, Home
Subscriber Server), 3GPP aaa server (3GPP authentication and authorization charging server), PCRF (Policy and
Charging Rules Function, "Policy and Charging Rules Function) and other support node.
Wherein, inside E-UTRAN, have eNB (evolved NodeB, the base station of evolution), have inside UTRAN NB (NodeB,
Base station)；MME is responsible for mobile management, the NAS (Non that UE (User Equipment, subscriber equipment) accesses from EUTRAN
Access Stratum, Non-Access Stratum) the chain of command related work such as management of the process of signaling and user's context；SGSN is responsible for
The work such as the management of mobile management, the process of Non-Access Stratum signaling and user's context that terminal UE accesses from E-UTRAN；S-
GW is the accessing gateway equipment being connected with E-UTRAN, forwards data, and be responsible for paging etc. between E-UTRAN and P-GW
Pending data caches.P-GW is then 3GPP evolved packet system and PDN (Packet Data Network, Packet Data Network
Network) borde gateway, be responsible for user terminal to the access of PDN, between EPS and PDN forwarding data etc..Lead between S-GW and P-GW
Cross S5/S8 interface to be connected, and employing GTP (General Packet Radio Service Tunneling Protocol, general
Packet radio service tunnel agreement) agreement or PMIPv6 (Proxy Mobile IP version 6, proxy-mobile IP version
6) agreement.PCRF is "Policy and Charging Rules Function entity, and the IP operation network provided with operator by Rx interface is connected, and obtains
Take business information, and be connected with the gateway device in network by Gx/Gxa/Gxb/Gxc interface, be responsible for initiating IP (Internet
Protocol, Internet protocol) foundation that carries, it is ensured that QoS (Quality of Service, the Service Quality of business datum
Amount), and carry out charging control.
Additionally, EPS also support UE by the access of other non-3 GPP system in addition to E-UTRAN, wherein, non-3 gpp system
System access by S2a/S2b/S2c interface realize (S2c access unrelated to the invention, therefore not shown in figure), now, P-GW make
The data anchor point of access for access and the non-3 GPP system of 3GPP system.In the system architecture of EPS, non-3 GPP system is divided
For trusted non-3 gpp IP access network (Trusted non-3GPP IP Access) and trustless non-3 gpp IP access network
(Untrusted non-3GPP IP Access).Trusted non-3 gpp IP access network can directly by S2a interface with P-GW even
Connect；Trustless non-3 gpp IP access network needs through ePDG (Evolved Packet Data Gateway, the packet of evolution
Data gateway) it is connected with P-GW, the interface between ePDG and P-GW is S2b.S2a/S2b interface all can use GTP or PMIPv6
Agreement.
At present, the research topic to EPS concentrates on Multiple Access (multiple access) and IP flow mobility
(stream migration), wherein multiple access refers to: UE is concurrently accessed a PDN by multiple access network through same P-GW to make EPC support,
Such as terminal can pass through 3GPP access network (EUTRAN access network or UTRAN access network) and trusted non-3 GPP access simultaneously
Net (such as WLAN access network) is concurrently accessed same P-GW, and P-GW sets up the tunnel with S-GW and and non-3 GPP access network simultaneously
The tunnel closed, or terminal can pass through 3GPP access network (EUTRAN access network or UTRAN access network) and insincere simultaneously
Appoint non-3 GPP access network (such as WLAN access network) be concurrently accessed same P-GW, P-GW set up simultaneously the tunnel with S-GW and with
The tunnel of ePDG.In such a scenario, UE by multiple access networks be attached to EPC, P-GW be UE distribute an IP address, UE and
There is an IP between PDN and connect (as shown in phantom in fig. 1).Pass owing to different business is applicable for use with different networks
Defeated, multi-access technology can select the access network being suitable for transmit business according to the characteristic of business, and, multiple access networks can be divided
Load network load, it is to avoid network congestion.
In prior art, support being initially accessed and switching access two kinds of terminal UE for the P-GW defined in Current protocol
How operation, notify that P-GW is currently accessed and be to discriminate between in " the multiple access scene " that be initially accessed and switch access, be an agreement
Middle an open question.If this problem does not solves, then P-GW can be caused cannot to know currently and to do make mistakes for multiple access scene
Maloperation, such as: discharge the access connecting or refusing present Access of the access network of built vertical connection.
It is also proposed that cross for this way to solve the problem in patent retrieval and relevant research report, such as, work as terminal
UE, when the second access network accesses, carries multiple access from the second access network access operation and is indicated to P-GW, and notice P-GW is many
Access scene.But, there is following defect in this method: when the second access network is non-3 GPP access network, needs to strengthen non-
3GPP network is so that it supports the transmission of multiple access instruction, and non-3 GPP access network is varied, is difficult to formulate unified
Standard.
Summary of the invention
Present invention solves the technical problem that and be to provide a kind of multi-access method and system, it is to avoid the shadow to non-3 GPP network
Ring and amendment.
For solving above-mentioned technical problem, the invention provides a kind of multi-access method, described method includes:
Subscriber equipment (UE) passes through third generation partner program (3GPP) access network to grouped data network gateway (P-
GW) send multiple access instruction, notify that described P-GW performs multiple access binding；
Described P-GW indicates according to described multiple access, performs the multiple access binding with two or more access networks.
Further, described UE sends multiple access by 3GPP access network to P-GW and indicates, and specifically includes:
3GPP access network is as the first access network, and when non-3 GPP access network is as the second access network, described UE is by described
The attachment operation of 3GPP access network, the operation of PDN connection establishment or activation PDP Context operation, send to described P-GW and connect more
Enter instruction；
Or, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, described UE to
Before described non-3 GPP access network initiates to access, described UE operated by the amendment of the request bearing resource of described 3GPP access network,
Tracking area update TAU operation or special multiple access instruction report operation, send multiple access instruction to described P-GW.
Further, described UE sends multiple access by 3GPP access network to P-GW and indicates, and specifically includes:
Non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, described UE is passing through
When stating attachment operation, the operation of PDN connection establishment or the activation PDP Context operation that 3GPP access network is initiated, to described P-GW
Transmission multiple access indicates.
Further, described P-GW indicates according to described multiple access, binds in the access receiving described second access network
During request, perform multiple access binding.
Further, described multiple access indicates, and specifically includes:
Cell is asked by attachment request, the request of PDN connection establishment, activation packet data protocol (PDP) context request
The value of type (request type) or attachment request type (attach type) newly definition；Create conversation request, agency ties up
In fixed renewal (PBU) message, the value to switching instruction (handover indication) newly definition；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request, the request of secondary PDP context activation
Increasing newly in message, establishment conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message
Cell or newly-increased indicating bit；
Or, attachment request, PDN connection establishment are asked, activation PDP Context is asked, secondary PDP context activation please
In the PCO ask, created in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message newly
Definition cell or indicating bit.
Further, when described P-GW receives the access bind request of the second access network, perform multiple access binding, specifically
Including:
Described P-GW receives the establishment conversation request that the second access network sends, or PBU message；
Described P-GW performs keeping the tunnel binding relation with the first access network, i.e. GTP tunnel or PMIP tunnel
Meanwhile, GTP or the PMIP tunnel binding relation with the second access network is set up.
Present invention also offers a kind of multi-access systems, described system includes: the multiple access instruction transmitting element in UE,
The multiple access binding unit in multiple access instruction delivery unit, and P-GW in 3GPP access network elements,
Described multiple access instruction transmitting element is used for, and sends multiple access by 3GPP access network elements to P-GW and indicates, logical
Know that described P-GW performs multiple access binding；
Described multiple access instruction delivery unit is used for, and sends the multiple access received instruction to described P-GW；
Described multiple access binding unit is used for, and indicates according to described multiple access, performs and two or more access networks
Multiple access binding.
Further, described multiple access instruction transmitting element and described multiple access instruction delivery unit are used for:
3GPP access network is as the first access network, and when non-3 GPP access network is as the second access network, multiple access instruction sends
Unit and described multiple access instruction delivery unit are operated by the attachment of described 3GPP access network, the operation of PDN connection establishment or
Activation PDP Context operates, and sends multiple access instruction to described P-GW；
Or, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, described UE to
Before described non-3 GPP access network initiates to access, multiple access instruction transmitting element and described multiple access instruction delivery unit pass through institute
State in request bearing resource amendment operation, tracking area update TAU operation or the special multiple access instruction of 3GPP access network
Report operation, sends multiple access instruction to described P-GW；
And, non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, multiple access indicates
Transmitting element and described multiple access instruction delivery unit are built in the attachment operation initiated by described 3GPP access network, PDN connection
When vertical operation or activation PDP Context operation, send multiple access instruction to described P-GW.
Further, described multiple access indicates, and specifically includes:
Cell is asked by attachment request, the request of PDN connection establishment, activation packet data protocol (PDP) context request
The value of type (request type) or attachment request type (attach type) newly definition；Create conversation request, agency ties up
In fixed renewal (PBU) message, the value to switching instruction (handover indication) newly definition；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request, the request of secondary PDP context activation
Increasing newly in message, establishment conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message
Cell or newly-increased indicating bit；
Or, attachment request, PDN connection establishment are asked, activation PDP Context is asked, secondary PDP context activation please
In the PCO ask, created in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message newly
Definition cell or indicating bit.
Further, described multiple access binding unit is used for, and indicates according to described multiple access, connects receiving described second
During the access bind request networked, perform multiple access binding.
Further, described multiple access binding unit is used for, and performs multiple access in such a way and binds:
Receive the establishment conversation request that the second access network sends, or during PBU message, described multiple access binding unit is held
Row, while keeping the tunnel binding relation with the first access network, i.e. GTP tunnel or PMIP tunnel, is set up and is accessed with second
GTP or the PMIP tunnel binding relation of net.
Use the present invention program so that P-GW can know the access scene of terminal according to the multiple access instruction received
It is multiple access scene, thus when receiving the bind request of the second access network, performs multiple access binding, it is achieved connecing of terminal more
Enter, it is to avoid impact and the amendment on non-3 GPP network.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the system architecture schematic diagram of EPS in prior art；
Fig. 2 is the schematic flow sheet of the embodiment of the present invention one, two；
Fig. 3 is the schematic flow sheet of the embodiment of the present invention three；
Fig. 4 is the schematic flow sheet of the embodiment of the present invention four；
Fig. 5 is the schematic flow sheet of the embodiment of the present invention five；
Fig. 6 is the schematic block diagram of the multi-access systems of the embodiment of the present invention.
Detailed description of the invention
The problem existed for prior art, present embodiment provides a kind of method realizing multiple access, passes through at UE
3GPP access network and non-3 GPP access network are sent out when setting up multiple access, send multiple access instruction by the signaling of 3GPP system and are sent to
P-GW, P-GW, according to the multiple access instruction received, know that the access scene of terminal is multiple access scene, please in the second access network
When asking binding, P-GW performs many bindings, it is achieved the multiple access of terminal.P-GW performs many bindings, refer to P-GW perform keep with
While the tunnel binding relation of the first access network, i.e. GTP tunnel or PMIP tunnel, set up with the GTP of the second access network or
Person's PMIP tunnel binding relation.
It should be noted that the first access network being previously mentioned in the present invention, the second access network be connect for PDN or
From the point of view of person's PDP Context, in some PDN connection/PDP Context, the order that 3GPP side and non-3 gpp side joint enter determines
It is the first access network or second access network of this PDN connection.For example, terminal is first attach to 3GPP, and the PDN of foundation is even
Connect 1, be attached to again non-3 gpp, set up the multiple access that PDN connects 1, initiate to set up PDN connection 2 in non-3 gpp the most again, the most again
The multiple access that PDN connects 2 is set up at 3GPP.Connecting for 1 for PDN, 3GPP and non-3 gpp are the first access network and the respectively
Two access networks, and for PDN connects 2,3GPP and non-3 gpp are the second access network and the first access network respectively.
Specifically, the multi-access method that present embodiment provides, it is applied to EPS, adopts the following technical scheme that
UE sends multiple access by 3GPP access network to P-GW and indicates, and notice P-GW performs multiple access binding；
P-GW indicates according to described multiple access, performs the multiple access binding with two or more access networks.
Wherein, UE sends multiple access instruction by 3GPP access network to P-GW, including following several ways:
One, 3GPP access network is as the first access network, and when non-3 GPP access network is as the second access network, UE is connect by 3GPP
Attachment operation, the operation of PDN connection establishment or the activation PDP Context operation networked, sends multiple access instruction to P-GW；
Two, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, at UE to non-3 gpp
Before access network is initiated to access, UE is operated by the request bearing resource amendment operation of 3GPP access network, tracking area update TAU
Or special multiple access instruction reports operation, sends multiple access instruction to P-GW；
Three, non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, UE is passing through 3GPP
When attachment operation, the operation of PDN connection establishment or activation PDP Context operation that access network is initiated, send multiple access to P-GW
Instruction.
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to the present invention
Embodiment be described in detail.It should be noted that following embodiment be applicable to the E-UTRAN network of 3GPP network with
WLAN/ fixed broadband network (fixed network), as the multiple access scene of two kinds of access networks, is also applied for the UTRAN net of the network of 3GPP
Network and WLAN/ fixed broadband network (fixed network) are as the multiple access scene of two kinds of access networks；And, in the case of not conflicting, this
Embodiment in application and the feature in each embodiment can mutual combination in any.
Embodiment one
Flow process shown in Figure 2, the present embodiment is based between S5/8 interface, and non-3 GPP access gateway and P-GW
S2a interface, S2b interface between ePDG and P-GW all use the scene of GTP agreement, these flow process concrete steps are described as follows:
Step 201:UE determines to be attached to EPC by 3GPP access network, then initiates attachment and sets up operation；Or UE is
After being integrated into EPC network, it is intended to again set up an additional PDN and connects (additional PDN connection), then initiate
PDN connection establishment operates.
Step 202:UE sends attachment request/PDN connection establishment and asks to MME, and carries that " multiple access refers within the message
Show ".
Step 203:UE carries out access authentication of user by MME to HSS/AAA request.
Step 204:MME sends " establishment conversation request " message and gives to S-GW, S-GW transmission " establishment conversation request " message
P-GW, all carries " the multiple access instruction " for indicating multiple access in message.
Step 205:P-GW and PCRF perform the operation of IP-CAN session establishment.
Step 206: as the response message to step 204, P-GW sends " establishment conversational response " message to S-GW, S-GW
Send " establishment conversational response " message to MME.
Step 207: the subsequent step of attachment/PDN connection establishment.
Step 208: hereafter, UE determines to initiate to access from non-3 GPP network, then initiates the operation of attachment/PDN connection establishment.
This step belongs to the operation within non-3 gpp, relevant from different non-3 GPP systems.
Step 209: non-3 GPP access gateway/ePDG (trustless non-3 GPP access network access) sends and " creates session to ask
Ask " message is to P-GW；
After step 210:P-GW receives the request message of step 209, owing to have received multiple access instruction in step 204 step,
P-GW accepts the request of step 209 at this, and retains step 204 and the tunnel relation of step 205 foundation, thus achieves
P-GW is with the tunnel binding relation of multiple access gateways, and terminal UE achieves multiple access.
After this step, P-GW is state of activation with the tunnel of 3GPP access network and non-3 GPP access network, and P-GW can
To send packet to two access networks simultaneously.
Step 211:P-GW sends to non-3 GPP access gateway/ePDG and creates conversational response message.
Step 212:UE completes the operation of attachment/PDN connection establishment at non-3 GPP access network.
By above step, terminal UE achieves multiple access.
Wherein, in above-mentioned steps 206-207, optionally, if P-GW supports many binding/multiple accesses, and terminal is received
UE sends " multiple access " request come, and P-GW can send instruction information to end UE.In this step, what P-GW sent " creates meeting
Words response ", S-GW sends " establishment conversational response " message and all carries this instruction.What this instruction information indicated is whether P-GW accepts
Multiple access request, and reflect the P-GW tenability to multiple access.Equally, optionally, step 207, this instruction is sent out by MME
Give UE.UE receives the instruction information from P-GW feedback, can judge whether P-GW receives access request accordingly: if fed back
Instruction, shows that P-GW receives multiple access；Without returning instruction, show that P-GW does not accept multiple access operation.
Additionally, step 202, multiple access instruction information in 204, if it is possible to by MME, S-GW perception, then MME and S-GW
If support multiple access, a step transmits this instruction information the most further downward, if MME and S-GW does not support multiple access, MME and
S-GW will not continue to transmit this instruction information to next step information.So, for MME, for the network element such as S-GW, P-GW, under
Whether one-level network element have received this instruction information and the most just embodies whether upper level network element supports multiple access function, so, connects more
Entering instruction information by step 202,204 pass to instruction information that whether multiple access ability supported by P-GW, P-GW again by step
Rapid 206,207 are delivered to UE, as long as UE have received instruction information, turn out MME, SGW and P-GW and support multiple access operation, otherwise
As long as any one network element middle does not support that multiple access operates, UE just can not receive instruction information, and UE is not it may determine that system is propped up
Hold multiple access operation.
Embodiment two
The present embodiment is essentially identical with previous embodiment one, is in place of the main difference of the two, and S5/8, S2a, S2b connect
Mouth can use PMIPv6 agreement.Step 204 and the message of 206, step 209 and 211 in Fig. 2 flow process may be assisted for PMIPv6
The message of view, or be PBU (Proxy Binding Update, agent binding update) and PBA (Proxy Binding
Acknowledgement, agent binding confirms) a pair message.That is: step 204 and 206, step 209 and 211 or be all
PMIP message, or be all GTP message (i.e. embodiment one)；Or step 204 and 206 is GTP message, step 209 and 211 is
PMIP message, or step 204 and 206 is PMIP message, and step 209 and 211 is GTP message.
Embodiment afterwards is the most similar, as long as i.e. relating to S5/8 interface, or S2a interface, or the when of S2b interface,
All can use GTP agreement and PMIPv6 agreement.
Embodiment three
The present embodiment difference from previous embodiment one and embodiment two is: embodiment one and embodiment two are at end
End UE is attached to 3GPP network or from 3GPP network sets up PDN connection when, sends multiple access and is indicated to P-GW, and at this
In embodiment, multiple access simply will be initiated before non-3 GPP access in terminal, first send this multiple access from 3GPP access network
It is indicated to P-GW, P-GW and receives this instruction, it is determined that be currently multiple access scene, hereafter, as long as P-GW have received from non-3 gpp
After the bind request of access network gateway or ePDG, P-GW carries out many bindings.
As it is shown on figure 3, these flow process concrete steps are described as follows:
Step 301:UE is attached to EPC by 3GPP access network, and may have built up one or more PDN
Connect.
Unlike previous embodiment, in the present embodiment, when UE sets up the connection of EPC by 3GPP access network, no
Carry multiple access instruction.
Step 302:UE determines to access from non-3 GPP access network, sets up multiple access；
Step 303-307:UE, before initiating attachment/PDN connection to non-3 GPP access network, first sends through 3GPP access network
Carry the first request message of " multiple access instruction " to MME.
Step 304, MME send carry " multiple access instruction " second ask message receive to S-GW, S-GW after be sent to
P-GW。
Step 305, P-GW retains the multiple access instruction in this second request message.
Step 306, P-GW responds the second response message and receives after this second response message response to MME to S-GW, S-GW
Step 307, MME responds the first response message to UE.
Above-mentioned 303-307 step specifically can use following various ways to realize:
" multiple access instruction " is sent to P-GW by the amendment operation of existing request bearing resource by mode one: UE.
Such as, the second request between message, MME and S-GW, between S-GW and P-GW of the first request between UE and MME
Message, can be respectively: " request bearing resource amendment " message of NAS message race, and " the bearing resource life of the message race of GTP
Make " message.
And P-GW is after receiving multiple access instruction message, by step 306-307, send the message race of GTP to S-GW
" bearing resource refusal " message, or initiate bearing resource amendment/renewal/activation manipulation that network is initiated, to step 303-304
Respond.
Mode two: UE will " be connect by existing tracking area update operation (Tracking Area Update, TAU) more
Indicate into " be sent to P-GW.
Such as, the second request between message, MME and S-GW, between S-GW and P-GW of the first request between UE and MME
Message, can be respectively: " TAU " message of NAS message race, and " the amendment carrying request information of the message race of GTP.
And P-GW is after receiving multiple access instruction message, by step 306-307, send the message race of GTP to S-GW
" amendment carrying response " message, responds step 303-304.
Mode three: report operation to report by special multiple access instruction.At UE Yu MME, NAS (Non-Access is newly set
Stratum, Non-Access Stratum) message, by newly-increased GTP message between MME and S-GW, S-GW and P-GW, transmit multiple access
Instruction.It also it is corresponding newly-increased response message in receiveing the response.
Step 308: hereafter, UE initiates to access from non-3 GPP network, or attachment operation or PDN connection establishment are grasped
Make.
Step 309: non-3 GPP access gateway/ePDG sends " establishment conversation request " or PBU message, and (both message is closed
It is referred to as bind request) to P-GW.
After step 310:P-GW receives the request message of step 309, owing to have received multiple access instruction, P-in step 304
GW accepts the request of step 309 at this, and with the tunnel relation of S-GW, thus achieve P-GW with multiple access gateways
Tunnel binding relation, terminal UE achieves multiple access.
After this step, P-GW is state of activation with the tunnel of 3GPP access network and non-3 GPP access network, and P-GW can
To send packet to two access networks simultaneously.
Step 311:P-GW sends to non-3 GPP access gateway/ePDG and creates conversational response message.
Step 312:UE completes the operation of attachment/PDN connection establishment at non-3 GPP access network.
By above step, terminal UE achieves multiple access.
It should be noted that if S2a/2b interface uses PMIPv6 agreement, then step 309 is divided with the message of step 311
Wei PBU and PBA.
If additionally, the above-mentioned description for the 304-306 in step be based on S5/S8 use GTP agreement it is assumed that
S5/S8 uses PMIPv6 agreement, then relevant operation is probably in the following manner:
(1), after S-GW receives " the bearing resource order " that MME sends, multiple access is sent by " gateway control session " operation
It is indicated to PCRF, PCRF, by " IP-CAN session " operation, multiple access instruction is sent to P-GW.Do not have between S-GW and P-GW
Direct interaction information；
(2), after S-GW receives " the bearing resource order " that MME sends, send multiple access by " PBU " message and be indicated to P-
GW, PGW preserve multiple access instruction and respond PBA message to S-GW.
Embodiment four
What the present embodiment described is that terminal sets up the scene of multiple access by UTRAN and WLAN.First UE connects from UTRAN
Enter, and in attaching process or PDP (Packet Data Protocol, packet data protocol) context activation Procedure, will
Multiple access instruction is carried to SGSN by Attach Request message or activation PDP Context request message.SGSN is again by " creating
Conversation request " message is carried to S-GW, then sent a P-GW by S-GW.
As shown in Figure 4, these flow process concrete steps are described as follows:
Step 401:UE determines to initiate attachment or the operation of PDN connection establishment from 3GPP access network.
Step 402:UE sends attachment request/activation PDN context and asks to SGSN, and carry " multiple access in the message
Instruction ".
Step 403:UE carries out access authentication of user by SGSN to HSS/AAA request.
Step 404:SGSN sends " establishment conversation request " message and gives to S-GW, S-GW transmission " establishment conversation request " message
P-GW, all carries " the multiple access instruction " for indicating multiple access in message.
Step 405:P-GW and PCRF perform the operation of IP-CAN session establishment.
Step 406: as the response message to step 404, P-GW sends " establishment conversational response " message to S-GW, S-GW
Send " establishment conversational response " message to SGSN.
Step 407: the subsequent step of attachment/activation PDN context.
Step 408: hereafter, UE determines to initiate to access from non-3 GPP network, then initiates the operation of attachment/PDN connection establishment.
Step 409: non-3 GPP access gateway/ePDG (trustless non-3 GPP access network access) sends and " creates session to ask
Ask " message is to P-GW；
After step 410:P-GW receives the request message of step 409, owing to have received multiple access instruction in step 404 step,
P-GW accepts the request of step 409 at this, and retains step 404 and the tunnel relation of step 405 foundation, thus achieves
P-GW is with the tunnel binding relation of multiple access gateways, and terminal UE achieves multiple access.
After this step, P-GW is state of activation with the tunnel of 3GPP access network and non-3 GPP access network, and P-GW can
To send packet to two access networks simultaneously.
Step 411:P-GW sends to non-3 GPP access gateway/ePDG and creates conversational response message.
Step 412:UE completes the operation of attachment/PDN connection establishment at non-3 GPP access network.
By above step, terminal UE achieves multiple access.
As described above it can be seen that the present embodiment actually also contains the multiple of corresponding previous embodiment 1
Scene, such as, in the present embodiment, if using PMIPv6 agreement between S-GW and P-GW, then step 404-406 describes with implementing
The description of example two.
Now the present embodiment is listed below in place of the main difference of embodiment 1:
The present embodiment is in place of the main difference of previous embodiment one, two, is that UE is first from UTRAN in the present embodiment
Access, and please by Attach Request message/activation PDP Context by multiple access instruction in attachment/pdp context activation
Ask and message is carried to SGSN；And previous embodiment one, second be UE be to be accessed by E-UTRAN, and attachment/PDP connect
By multiple access instruction by Attach Request message/PDP connection establishment request message is carried to MME during foundation；
The present embodiment is in place of the main difference of previous embodiment two, makes MME into SGSN, remaining flow process
Identical.On step describes, what UE issued SGSN can be the secondary PDP context activation request message strengthened, or
Message newly-increased between UE and SGSN.Message after SGSN is with the description of embodiment three.
Embodiment five
This embodiment based on scene be terminal first from non-3 GPP access, then set up the scene of multiple access from 3GPP.Connect more
The instruction information entered is by the second access network, the namely attachment of 3GPP access network/PDN connection establishment/PDP context activation
Operation is carried to P-GW's by UE.
As it is shown in figure 5, these flow process concrete steps are described as follows:
Step 501: terminal is from non-3 GPP access, and establishes one or more PDN connection；
Step 501a.UE from 3GPP access network (EUTRAN or UTRAN) initiate attachment or PDN connection establishment or
PDP context activation.
Step 502:UE send attachment request or PDN connection establishment request or PDP context activation ask to
MME/SGSG, carries multiple access instruction information in request message；
Step 503 (optional): if being initially accessed 3GPP system, then first carry out access authentication of user operation.
Step 504:MME/SGSN send " establishment conversation request " give S-GW, S-GW send " establishment conversation request " or
" PBU " message, to P-GW, all carries multiple access instruction information in message.
Step 505:P-GW and PCRF perform the operation of IP-CAN session modification；
Step 505a:P-GW receives the bind-request message from S-GW, performs many bindings according to multiple access instruction information
Operation.
Step 506:P-GW is responded to S-GW and is created conversational response or PBA message, and S-GW responds to MME and creates session sound
Answer message.
Step 507: attachment/PDN connection establishment/PDP context activation operation subsequent step completes.
By above step, terminal UE achieves multiple access.
Wherein, above-mentioned steps 504-506 implement the detailed description that can refer in previous embodiment, the most superfluous at this
State.
Wherein, indicating about the multiple access in above-described embodiment flow process, its carrying mode can have multiple implementation.Example
As, the instruction of this multiple access can be a newly-increased cell, or the flag bit of a new definition in existing cell, or
It it is the value (value) of existing cell or one the new definition of existing flag bit.Several typical implementation be set forth below:
(A) for embodiment one, embodiment two, embodiment four and the scheme of embodiment five, this multiple access indicates in message
" attachment request/PDN connection establishment asks/activates can be to existing cell request type in PDP Context request information
One value of the instruction multiple access of (request type) newly definition is in " establishment conversation request " message or PBU message, right
One value of the instruction multiple access of " switching instruction " (handover indication) newly definition.
(B) for previous embodiment one, two, three, four and five, can be in attachment request/PDN connection establishment request/activation
PDP Context request/secondary PDP context activation request message, and " establishment conversation request " message or PBU message is existing
In cell PCO (Protocol Configuration Option, protocol configuration option), carry multiple access instruction, because existing
PCO message be not by MME and S-GW affect, so can reduce the impact on existing system；
(C) for previous embodiment, all can increase a cell or indicating bit newly, be used for transmitting multiple access instruction.
Additionally, as shown in Figure 6, additionally providing a kind of multi-access systems in the embodiment of the present invention, this system mainly includes UE
In multiple access instruction transmitting element, in 3GPP access network elements (such as MME, S-GW and/or SGSN etc.) multiple access instruction pass
Send the multiple access binding unit in unit, and P-GW, wherein:
Described multiple access instruction transmitting element is used for, and sends multiple access by 3GPP access network elements to P-GW and indicates, logical
Know that described P-GW performs multiple access binding；
Described multiple access instruction delivery unit is used for, and sends the multiple access received instruction to described P-GW；
Described multiple access binding unit is used for, and indicates according to described multiple access, performs and two or more access networks
Multiple access binding.
Further, described multiple access instruction transmitting element and described multiple access instruction delivery unit are used for:
3GPP access network is as the first access network, and when non-3 GPP access network is as the second access network, multiple access instruction sends
Unit and described multiple access instruction delivery unit are operated by the attachment of described 3GPP access network, the operation of PDN connection establishment or
Activation PDP Context operates, and sends multiple access instruction to described P-GW；
Or, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, described UE to
Before described non-3 GPP access network initiates to access, multiple access instruction transmitting element and described multiple access instruction delivery unit pass through institute
State in request bearing resource amendment operation, tracking area update TAU operation or the special multiple access instruction of 3GPP access network
Report operation, sends multiple access instruction to described P-GW；
And, non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, multiple access indicates
Transmitting element and described multiple access instruction delivery unit are built in the attachment operation initiated by described 3GPP access network, PDN connection
When vertical operation or activation PDP Context operation, send multiple access instruction to described P-GW.
Further, described multiple access indicates, and specifically includes:
Cell is asked by attachment request, the request of PDN connection establishment, activation packet data protocol (PDP) context request
The value of type (request type) or attachment request type (attach type) newly definition；Create conversation request, agency ties up
In fixed renewal (PBU) message, the value to switching instruction (handover indication) newly definition；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request, the request of secondary PDP context activation
Increasing newly in message, establishment conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message
Cell or newly-increased indicating bit；
Or, attachment request, PDN connection establishment are asked, activation PDP Context is asked, secondary PDP context activation please
In the PCO ask, created in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment, PBU message newly
Definition cell or indicating bit.
Further, described multiple access binding unit is used for, and indicates according to described multiple access, connects receiving described second
During the access bind request networked, perform multiple access binding.
Further, described multiple access binding unit is used for, and performs multiple access in such a way and binds:
Receive the establishment conversation request that the second access network sends, or during PBU message, described multiple access binding unit is held
Row, while keeping the tunnel binding relation with the first access network, i.e. GTP tunnel or PMIP tunnel, is set up and is accessed with second
GTP or the PMIP tunnel binding relation of net.
These are only that the present invention's is preferable to carry out case, be not limited to the present invention, the present invention also can have other
Various embodiments, in the case of without departing substantially from present invention spirit and essence thereof, those of ordinary skill in the art can be according to this
Bright make various corresponding change and deformation, but these change accordingly and deformation all should belong to appended claims of the invention
Protection domain.
Obviously, those skilled in the art should be understood that each module of the above-mentioned present invention or each step can be with general
Calculating device realize, they can concentrate on single calculating device, or be distributed in multiple calculating device and formed
Network on, alternatively, they can with calculate the executable program code of device realize, it is thus possible to by they store
Performed by calculating device in the storage device, and in some cases, can perform with the order being different from herein shown
The step gone out or describe, or they are fabricated to respectively each integrated circuit modules, or by the multiple modules in them or
Step is fabricated to single integrated circuit module and realizes.So, the present invention is not restricted to the combination of any specific hardware and software.
Claims (9)
1. a multi-access method, it is characterised in that described method includes:
User equipment (UE) is connect to grouped data network gateway P-GW transmission by third generation partner program 3GPP access network more
Enter instruction, notify that described P-GW performs multiple access binding；
Described P-GW indicates according to described multiple access, performs the multiple access binding with two or more access network；
Wherein, described UE sends multiple access by 3GPP access network to P-GW and indicates, and specifically includes:
3GPP access network is as the first access network, and when non-3 GPP access network is as the second access network, described UE passes through described 3GPP
The attachment operation of access network, the operation of packet data network PDN connection establishment or activation packet data protocol PDP Context behaviour
Make, send multiple access instruction to described P-GW；
Or, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, at described UE to described
Before non-3 GPP access network initiates to access, described UE is revised operation by the request bearing resource of described 3GPP access network, is followed the tracks of
Area update TAU operation or special multiple access instruction report operation, send multiple access instruction to described P-GW.
2. the method for claim 1, it is characterised in that
Described UE sends multiple access by 3GPP access network to P-GW and indicates, and specifically includes:
Non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, described UE is by described
When attachment operation, the operation of PDN connection establishment or activation PDP Context operation that 3GPP access network is initiated, send out to described P-GW
Multiple access is sent to indicate.
3. method as claimed in claim 1 or 2, it is characterised in that
Described P-GW indicates according to described multiple access, and when receiving the access bind request of described second access network, execution is many
Access binding.
4. method as claimed in claim 1 or 2, it is characterised in that
Described multiple access indicates, and specifically includes:
To cell request type in attachment request, the request of PDN connection establishment or activation packet data protocol PDP Context request
The value that request type or attachment request type attach type newly defines；Establishment conversation request or agent binding are more
In new PBU message, the value that switching instruction handover indication is newly defined；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request or the request of secondary PDP context activation
Message, and create in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment or PBU message
Newly-increased cell or newly-increased indicating bit；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request or the request of secondary PDP context activation
With the agreement created in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment or PBU message
New definition cell or indicating bit in config option PCO.
5. method as claimed in claim 3, it is characterised in that
When described P-GW receives the access bind request of the second access network, perform multiple access binding, specifically include:
Described P-GW receives the establishment conversation request that the second access network sends, or PBU message；
Described P-GW performs in general packet radio service tunnel agreement GTP kept with the first access network or agency mobile mutually
While networking protocol PMIP tunnel binding relation, set up GTP or the PMIP tunnel binding relation with the second access network.
6. a multi-access systems, it is characterised in that described system includes: the multiple access instruction in user equipment (UE) sends single
Unit, the multiple access instruction delivery unit in third generation partner program 3GPP access network elements, and grouped data network gateway
Multiple access binding unit in P-GW,
Described multiple access instruction transmitting element is used for, and sends multiple access by 3GPP access network elements to P-GW and indicates, notifies institute
State P-GW and perform multiple access binding；
Described multiple access instruction delivery unit is used for, and sends the multiple access received instruction to described P-GW；
Described multiple access binding unit is used for, and indicates according to described multiple access, performs the multiple access with two or more access network and ties up
Fixed；
Wherein, described multiple access instruction transmitting element and described multiple access instruction delivery unit are used for:
3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, and multiple access instruction transmitting element
With described multiple access instruction delivery unit by the attachment operation of described 3GPP access network, packet data network PDN connection establishment
Operation or activation packet data protocol PDP Context operation, send multiple access instruction to described P-GW；
Or, 3GPP access network is as the first access network, when non-3 GPP access network is as the second access network, at described UE to described
Before non-3 GPP access network initiates to access, multiple access instruction transmitting element and described multiple access instruction delivery unit are by described
Request bearing resource amendment operation, tracking area update TAU operation or the special multiple access instruction of 3GPP access network report
Operation, sends multiple access instruction to described P-GW；
And, non-3 GPP access network is as the first access network, and when 3GPP access network is as the second access network, multiple access instruction sends
Unit and described multiple access instruction delivery unit are the attachment operation initiated by described 3GPP access network, PDN connection establishment behaviour
When making or activate PDP Context operation, send multiple access instruction to described P-GW.
7. system as claimed in claim 6, it is characterised in that
Described multiple access indicates, and specifically includes:
To cell request type in attachment request, the request of PDN connection establishment or activation packet data protocol PDP Context request
The value that request type or attachment request type attach type newly defines；Establishment conversation request or agent binding are more
In new PBU message, the value that switching instruction handover indication is newly defined；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request or the request of secondary PDP context activation
Message and establishment conversation request, amendment carry in request, bearing resource order, request bearing resource amendment or PBU message
Newly-increased cell or newly-increased indicating bit；
Or, attachment request, the request of PDN connection establishment, activation PDP Context request or the request of secondary PDP context activation
With the agreement created in conversation request, amendment carrying request, bearing resource order, request bearing resource amendment or PBU message
New definition cell or indicating bit in config option PCO.
8. system as claimed in claim 7, it is characterised in that
Described multiple access binding unit is used for, and indicates according to described multiple access, ties up in the access receiving described second access network
When surely asking, perform multiple access binding.
9. system as claimed in claim 8, it is characterised in that
Described multiple access binding unit is used for, and performs multiple access in such a way and binds:
Receive the establishment conversation request that the second access network sends, or during PBU message, described multiple access binding unit performs
General packet radio service tunnel agreement GTP or proxy mobile internet protocol PMIP tunnel with the first access network is kept to tie up
While determining relation, set up GTP or the PMIP tunnel binding relation with the second access network.
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| CN201110270844.4A CN103002543B (en) | 2011-09-14 | 2011-09-14 | A kind of multi-access method and system |
| PCT/CN2012/080902 WO2013037271A1 (en) | 2011-09-14 | 2012-09-03 | Multi-access method and system |
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| WO2017011975A1 (en) * | 2015-07-20 | 2017-01-26 | 华为技术有限公司 | Access method for wireless communication network, and related apparatus |
| CN107295610B (en) | 2016-04-01 | 2019-12-20 | 电信科学技术研究院 | Network access method, related equipment and system |
| CN108307530B (en) | 2016-09-30 | 2023-09-22 | 华为技术有限公司 | Session connection establishment method, related equipment and system |
| US20190313311A1 (en) * | 2018-04-09 | 2019-10-10 | Mediatek Inc. | Apparatuses, service networks, and methods for handling plmn-specific parameters for an inter-plmn handover |
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| CN101577931A (en) * | 2008-11-14 | 2009-11-11 | 中兴通讯股份有限公司 | Method and system for realizing multi-access |
| CN101778446A (en) * | 2009-01-09 | 2010-07-14 | 中兴通讯股份有限公司 | Multiple access control method and device and multiple access indicating method in development grouping system |
| CN101931946A (en) * | 2009-06-23 | 2010-12-29 | 中兴通讯股份有限公司 | Multi-access method of terminal in evolved packet system and system thereof |
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| WO2008110902A2 (en) * | 2007-03-15 | 2008-09-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system for global anchor registration |
| CN101801102B (en) * | 2009-02-06 | 2015-12-02 | 华为技术有限公司 | PDN connection establishment method, relevant device and system |
| CN101742471B (en) * | 2009-02-12 | 2015-12-16 | 中兴通讯股份有限公司 | A kind of method that data flow and Access Network connect and bind |
| CN101873589B (en) * | 2009-04-21 | 2016-03-09 | 华为技术有限公司 | Multi-network access control method, communication system and relevant device |
| CN101730072B (en) * | 2009-04-30 | 2012-05-23 | 中兴通讯股份有限公司 | Packet data web gateway identification saving method and system in multi-access scene |
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| CN101577931A (en) * | 2008-11-14 | 2009-11-11 | 中兴通讯股份有限公司 | Method and system for realizing multi-access |
| CN101778446A (en) * | 2009-01-09 | 2010-07-14 | 中兴通讯股份有限公司 | Multiple access control method and device and multiple access indicating method in development grouping system |
| CN101931946A (en) * | 2009-06-23 | 2010-12-29 | 中兴通讯股份有限公司 | Multi-access method of terminal in evolved packet system and system thereof |
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