CN102098798B - Method and device for realizing selective Internet protocol (IP) traffic offload - Google Patents
Method and device for realizing selective Internet protocol (IP) traffic offload Download PDFInfo
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Abstract
The invention discloses a method for realizing selective Internet protocol (IP) traffic offload, which is used for realizing the transmission of selective IP traffic offload (SIPTO) per IP flow granularity. The method comprises the following steps that: after a control node in a core network receives a connection request sent by a terminal, when the control node in the core network determines to activate the SIPTO per IP flow, the control node in the core network sends the indication that the terminal resends the connection request to the same access point name (APN) after the current connection establishment is finished to the terminal through first network attached storage (NAS) information; and after the control node in the core network receives the connection request again, a local gateway associated with a femtocell is selected for the terminal, and a traffic flow template (TFT) corresponding to the offloaded traffic is sent to the terminal through second NAS information. The invention also discloses a device for realizing the method.
Description
Technical field
The present invention relates to the communications field, particularly relate to implementation method and the device of selectivity IP data distribution.
Background technology
SIPTO(Selective IP Traffic Offload, selectivity IP(Internet Protocol) data distribution) technology is that a kind of permission core net is UE(subscriber equipment, or for MS(mobile terminal)) thus selecting one makes a part of data of UE directly enter PDN(Packet Data Network by this gateway apart from the nearest gateway of its access point, packet data network) technology.SIPTO connects in process of establishing and activates at PDN, specifically by core network control node, according to subscription data and carrier policy etc., is judged whether to activate SIPTO.PDN technology is applicable to third generation communication system (3G) and Long Term Evolution (LTE) system, and in 3G system, PDN connects and is called PDP Context(Packet Data Protocol context, block data protocol context).
Current 3GPP(3G (Third Generation) Moblie technology) Release10(version 10, R10) the SIPTO technology in stage is only for macro base station, every at per() APN(Access Point Name, APN) in granularity, realize, by core network control node, judge an IP connects whether can activate SIPTO, be specially: when terminal request connection is set up, whether core network control node can activate SIPTO according to the APN of subscription data interpretation request, if signing, allow, and the configuration data of core network control node allows this APN to carry out SIPTO, for terminal is selected apart from the nearer gateway of its access point, to obtain shorter user plane path.
In the R11 stage, the granularity that requires SIPTO strategy can be the every IP stream of the per IP Flow Class(under arbitrary APN class), or the per IP Flow Class under specific APN.Yet prior art there is no the stream at the every IP of per IP flow() realize the solution of SIPTO in granularity.
Summary of the invention
The embodiment of the present invention provides a kind of implementation method and device of selectivity IP data distribution, for realizing the SIPTO transmission of per IP stream (flow) granularity.
An implementation method for selectivity IP data distribution, is applied to network side, comprises the following steps:
Core network control node is received after the connection request of terminal transmission, the judgement current community of terminal is home base station cells, and while determine activating the SIPTO of every the Internet protocol flows per IP flow, by a NAS message, to terminal, send indication, indicating terminal again sends connection request to identical APN APN after current connection has been set up;
Core network control node is received after connection request again, for terminal is selected the local gateway of Home eNodeB association, and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
An implementation method of selectivity IP data distribution SIPTO, is applied to end side, comprises the following steps:
Terminal sends after connection request, the indication sending by a NAS message sink core network control node, and wherein, described indication is that core network control node is received after the connection request of terminal transmission, the judgement current community of terminal sends while being home base station cells;
Terminal, according to the indication of receiving, again sends connection request to identical APN APN after current connection has been set up;
Terminal sends after connection request again, by the 2nd NAS message sink core network control node, send by traffic flow template TFT corresponding to streamed data, wherein, in terminal, again send after connection request, make core network control node again receive after connection request, for terminal is selected the local gateway of Home eNodeB association and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
A core network control node equipment, comprising:
Interface module, for receiving after the connection request of terminal transmission, the judgement current community of terminal is home base station cells, and while determine activating the SIPTO of every the Internet protocol flows per IP flow, by a NAS message, to terminal, send indication, indicating terminal again sends connection request to identical APN APN after current connection has been set up;
Control module, for again receiving after connection request, for terminal is selected the local gateway of Home eNodeB association, and indicates interface module will to be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
A terminal equipment, comprising:
Receiver module, be used for sending after connection request, the indication sending by a NAS message sink core network control node, wherein, described indication is that core network control node is received after the connection request of terminal transmission, and the judgement current community of terminal sends while being home base station cells;
Sending module for according to the indication of receiving, again sends connection request to identical APN APN after current connection has been set up;
Receiver module also for by the 2nd NAS message sink core network control node, send by traffic flow template TFT corresponding to streamed data, wherein, in terminal, again send after connection request, make core network control node again receive after connection request, for terminal is selected the local gateway of Home eNodeB association and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
In the embodiment of the present invention, core network control node forces terminal again to send connection request by sending indication to terminal, while again receiving connection request, for this terminal is selected local gateway, to activate SIPTO, and send TFT(Traffic Flow Template to terminal, traffic flow template), to realize the SIPTO transmission of per IP flow granularity.
accompanying drawing explanation
Fig. 1 is the network side implementation method flow chart of SIPTO in the embodiment of the present invention;
Fig. 2 is the end side implementation method flow chart of SIPTO in the embodiment of the present invention;
Fig. 3 is the detailed implementation method flow chart of SIPTO in the embodiment of the present invention;
Fig. 4 realizes the method flow diagram of SIPTO by MME in the embodiment of the present invention;
Fig. 5 realizes the method flow diagram of SIPTO by SGSN in the embodiment of the present invention;
Fig. 6 is the primary structure figure of core network control node equipment in the embodiment of the present invention;
Fig. 7 is the detailed structure view of core network control node equipment in the embodiment of the present invention;
Fig. 8 is the structure chart of terminal equipment in the embodiment of the present invention.
embodiment
In the embodiment of the present invention, core network control node forces terminal again to send connection request by sending indication to terminal, while again receiving connection request, for this terminal is selected local gateway, to activate SIPTO, and send TFT(Traffic Flow Template to terminal, traffic flow template), to realize the SIPTO transmission of per IP flow granularity.
Referring to Fig. 1, in the present embodiment, the network side implementation method flow process of SIPTO is as follows:
Step 101: core network control node is received after the connection request of terminal transmission, while determining to activate the SIPTO of per IPflow, by a NAS(Non-Access Stratum) message is to terminal transmission indication, and indicating terminal again sends connection request to identical APN (APN) after current connection has been set up.
Step 102: core network control node is received after connection request again, for terminal is selected the local gateway of Home eNodeB association, and will be sent to terminal by TFT corresponding to streamed data by the 2nd NAS message.
Relative with network side, terminal need to receive indication and TFT, below the implementation procedure of end side is introduced.
Referring to Fig. 2, in the present embodiment, the end side implementation method flow process of SIPTO is as follows:
Step 201: terminal sends after connection request, the indication sending by a NAS message sink core network control node.
Step 202: terminal, according to the indication of receiving, again sends connection request to identical APN after current connection has been set up.
Step 203: terminal by the 2nd NAS message sink core network control node, send by TFT corresponding to streamed data.
Below in conjunction with end side and network side, introduce in detail the implementation procedure of SIPTO.
Referring to Fig. 3, in the present embodiment, the detailed implementation method flow process of SIPTO is as follows:
Step 301: terminal sends connection request.
Step 302: core network control node, according to the SIPTO strategy of the SIPTO strategy in the subscription data of terminal or local configuration, judges whether to activate the SIPTO of per IP flow, if so, continues step 303, otherwise processes according to prior art.For example, the SIPTO strategy in the subscription data of core network control node inquiry terminal, finds that the APN of request allows SIPTO and subscription data to comprise by TFT corresponding to streamed data, determines to activate the SIPTO of per IP flow.Or the SIPTO strategy of the local configuration of core network control node inquiry, finds to require the data (as HTTP data) with special characteristic all must adopt the SIPTO of per IP flow, determines to activate the SIPTO of per IP flow.
Step 303: core network control node judges that whether the current community of terminal is home base station cells, if so, continues step 304, otherwise processes according to prior art.How to judge whether home base station cells belongs to prior art in current area, in the present embodiment, no longer describe in detail.
Wherein, the execution sequence between step 302 and 303 is without strict demand.
Step 304: core network control node sends indication by a NAS message to terminal, and indicating terminal again sends connection request to identical APN after current connection has been set up.
Core network control node waits for that for fear of indefinite duration terminal sends connection request again, or still again sends connection request for distinguishing terminal sends connection request first, can, after sending indication, start timer.
Step 305: terminal, according to the indication of receiving, again sends connection request to identical APN after current connection has been set up.
When core network control node is received connection request before timer expiry, continue step below, if receive connection request after timer expiry, according to receiving first connection request processing.
Step 306: core network control node is received after connection request again, is the local gateway of terminal selection Home eNodeB association.
Step 307: core network control node will be sent to terminal by TFT corresponding to streamed data by the 2nd NAS message.
In different networks, core network control node can be different entity, as is Mobility Management Entity (MME) or service GPRS (GPRS) support node (SGSN).Because entity is different, so the implementation procedure of SIPTO is also slightly different, below by two embodiment, introduce in detail.
Referring to Fig. 4, in the present embodiment, by MME, realize the method flow of SIPTO as follows:
Step 401:UE(subscriber equipment) send packet data network connection request (PDN Connectivity Request) message.
Step 402:MME, according to the SIPTO strategy of the SIPTO strategy in the subscription data of terminal or local configuration, judges whether to activate the SIPTO of per IP flow, if so, continues step 403, otherwise processes according to prior art.
Step 403:MME judges that whether the current community of terminal is home base station cells, if so, continues step 404, otherwise processes according to prior art.
Wherein, step 402 and 403 without strict implement successively.
Step 404:MME sets up the inner carrying of core net.This process comprises: MME sends and creates session request (Create Session Request) message to gateway (Serving GW); Serving GW is to PDN GW(grouped data network gateway) forwarding Create Session Request message; PDN GW and PCRF(policy control and charging rule functions) carry out IP-CAN Session establishment/modification(IP user access networks session establishment or modification); Afterwards, PDN GW sends and creates conversational response (Create Session Response) message to Serving GW; Serving GW is transmitted to MME by Create Session Response.
Step 405:MME sends a NAS message that carries indication (indication) to UE.In the present embodiment, a NAS message can be specially and activate acquiescence evolved packet system bearer context request (ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST) message.Wherein, ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message can be carried on MME in carrying foundation request (Bearer Setup Request) message of Home eNodeB (as home evolved node B (HeNB)) transmission.HeNB can control by RRC(Radio Resource) connection reconstruction (RRC Connection Reconfiguration) message brings UE by ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message.And, described indication can represent that the value of the information unit of cause value realizes by expanding in a NAS message, for example expand the ESM cause(EPS(evolved packet system in ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST message) the session management reason of system) realize, the value that increases reason represents the indication in the present embodiment.
Step 406:MME and UE set up the carrying of eating dishes without rice or wine with S1 interface, connect.This process comprises: UE sends RRC connection reconstruction to HeNB and completes (RRC Connection Reconfiguration Complete) message; HeNB sends carrying to MME and sets up response (Bearer Setup Response) message; UE sends and directly shifts (Direct Transfer) message to HeNB; HeNB sends PDN to MME and has connected (PDN Connectivity Complete) message; MME sends and revises carrying request (Modify Bearer Request) message to Serving GW; Serving GW forwards Modify Bearer Request message to PDN GW; PDN GW returns and revises carrying response (Modify Bearer Response) message to Serving GW; MME sends notice request (Notify Request) message to HSS; HSS returns to push-notification-answer (Notify Response) message to MME.Wherein, S1 is the interface between Access Network and core net.
Step 407:UE sends PDN Connectivity Request message again according to indication.
Step 408:MME is the local gateway that UE selects Home eNodeB association, and connects.
Step 409:MME sends the 2nd NAS message that carries the TFT that streamed data is corresponding to UE.In the present embodiment, the 2nd NAS message can be specially and revise evolved packet system bearer context request (MODIFY EPS BEARER CONTEXT REQUEST) message.
Referring to Fig. 5, in the present embodiment, by SGSN, realize the method flow of SIPTO as follows:
Step 501:MS(mobile terminal) by wireless access network (RAN), to SGSN, send and activate packet data protocol context request (Activate PDP Context Request) message, to ask setting up IP, connect.
Step 502:SGSN, according to the SIPTO strategy of the SIPTO strategy in the subscription data of terminal or local configuration, judges whether to activate the SIPTO of per IP flow, if so, continues step 503, otherwise processes according to prior art.
Step 503:SGSN judges that whether the current community of terminal is home base station cells, if so, continues step 504, otherwise processes according to prior art.
Wherein, step 502 and 503 without strict implement successively.
Step 504:SGSN sets up the inner carrying of core net.This process comprises: SGSN is to GGSN(Gateway GPRS Support Node, Gateway GPRS Support Node) send and create PDP(Packet Data Protocol, packet data protocol) context request (Create PDP Context Request) message; GGSN returns and creates PDP Context response (Create PDP Context Response) message to SGSN; SGSN sends RAB by RAN to MS and sets up (Radio Access Bearer Setup) message; SGSN sends to start to RAN and follows the tracks of (Invoke Trace) message; SGSN sends and upgrades PDP Context request (Update PDP Context Request) message to GGSN; GGSN returns and upgrades PDP Context response (Update PDP Context Response) message to SGSN.
Step 505:SGSN sends a NAS message that carries indication to MS.In the present embodiment, a NAS message can be specially and activate block data protocol context acceptance (Activate PDP Context Accept) message.Wherein, described indication can represent that the value of the information unit of cause value realizes by expanding in a NAS message, for example, by the SM cause(session management reason in expansion Activate PDP Context Accept message) realize, the value that increases reason represents the indication in the present embodiment.
Step 506:SGSN and MS set up carrying, connect.
Step 507:MS sends Activate PDP Context Request message again according to indication.
Step 508:SGSN is the local gateway that MS selects Home eNodeB association, and connects.
Step 509:SGSN sends the 2nd NAS message that carries the TFT that streamed data is corresponding to MS.In the present embodiment, the 2nd NAS message can be specially and revise block data protocol context (MODIFY PDP Context) message.
By above description, understood the implementation procedure of SIPTO, this process is mainly realized by core network control node and terminal, and internal structure and the function for these two equipment is introduced below.
Referring to Fig. 6, in the present embodiment, core network control node equipment comprises: interface module 601 and control module 602.Core network control node equipment can be MME or SGSN etc.
Core network control node equipment also comprises: judge module 603, and shown in Figure 7.Judge module 603, for according to the SIPTO strategy of the SIPTO strategy of the subscription data of terminal or local configuration, judges whether to activate the SIPTO of every the Internet protocol flows per IP flow.Judge module 603 is also for for judging whether the current community of terminal is home base station cells.Interface module 601, when being judged as home base station cells, sends indication to terminal.
Situation one: core network control node equipment is Mobility Management Entity MME.Described connection request is packet data network PDN connection request.Now, interface module 601 sends indication by a NAS message to terminal.In the present embodiment, a NAS message can be specially and activate acquiescence evolved packet system bearer context request (ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST) message.Control module 602 indication interface modules 601, by the 2nd NAS message, will be sent to terminal by TFT corresponding to streamed data.In the present embodiment, the 2nd NAS message can be specially and revise evolved packet system bearer context request (MODIFY EPS BEARER CONTEXT REQUEST) message
Situation two: core network control node equipment is Serving GPRS Support Node SGSN.Described connection request is for activating packet data protocol context request (Activate PDP Context Request).Interface module 601 sends indication by a NAS message to terminal.In the present embodiment, a NAS message can be specially and activate block data protocol context acceptance (Activate PDP Context Accept) message.Control module 602 indication interface modules 601, by the 2nd NAS message, will be sent to terminal by TFT corresponding to streamed data.In the present embodiment, the 2nd NAS message can be specially and revise block data protocol context (MODIFY PDP Context) message.
Referring to Fig. 8, in the present embodiment, terminal equipment comprises: receiver module 801 and sending module 802.Receiver module 801 and sending module 802 can belong to same interface.Terminal equipment can be specially UE or MS.
Sending module 802, for sending various message, as according to the indication of receiving, again sends connection request to identical APN (APN) after current connection has been set up.
For situation one: core network control node is Mobility Management Entity (MME).Described connection request is packet data network (PDN) connection request.Receiver module 801, by a NAS message, receives the indication that MME sends.In the present embodiment, a NAS message can be specially and activate acquiescence evolved packet system bearer context request (ACTIVATE DEFAULT EPS BEARER CONTEXT REQUEST) message.Receiver module 801 is by the 2nd NAS message, receive that MME sends by traffic flow template corresponding to streamed data (TFT).In the present embodiment, the 2nd NAS message can be specially and revise evolved packet system bearer context request (MODIFY EPS BEARER CONTEXT REQUEST) message.
For situation two: core network control node is Serving GPRS Support Node (SGSN).Described connection request is for activating packet data protocol context request (Activate PDP Context Request).Receiver module 801, by a NAS message, receives the indication that SGSN sends.In the present embodiment, a NAS message can be specially and activate block data protocol context acceptance (Activate PDP Context Accept) message.Receiver module 801 is by the 2nd NAS message, receive that SGSN sends by streamed data corresponding (TFT).In the present embodiment, the 2nd NAS message can be specially and revise block data protocol context (MODIFY PDP Context) message.
In the embodiment of the present invention, core network control node forces terminal again to send connection request by sending indication to terminal, while again receiving connection request, for this terminal is selected local gateway, to activate SIPTO, and send TFT(Traffic Flow Template to terminal, traffic flow template), to realize the SIPTO transmission of per IP flow granularity.The embodiment of the present invention also avoids core network control node to wait for the connection request that terminal sends again indefinite duration by timer, or with this, to carry out distinguishing terminal be to send first or again connection request.And for different networks, core network control node may be different entity, the embodiment of the present invention provides the implementation of different SIPTO, to meet the demand of diverse network.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, implement software example or in conjunction with the form of the embodiment of software and hardware aspect completely.And the present invention can adopt the form that wherein includes the upper computer program of implementing of computer-usable storage medium (including but not limited to magnetic disc store and optical memory etc.) of computer usable program code one or more.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (16)
1. an implementation method of selectivity IP data distribution SIPTO, is characterized in that, comprises the following steps:
Core network control node is received after the connection request of terminal transmission, the judgement current community of terminal is home base station cells, and while determine activating the SIPTO of every the Internet protocol flows per IP flow, by a NAS message, to terminal, send indication, indicating terminal again sends connection request to identical APN APN after current connection has been set up;
Core network control node is received after connection request again, for terminal is selected the local gateway of Home eNodeB association, and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
2. the method for claim 1, it is characterized in that, before core network control node sends indication to terminal, also comprise step: core network control node, according to the SIPTO strategy of the SIPTO strategy in the subscription data of terminal or local configuration, judges whether to activate the SIPTO of every the Internet protocol flows per IP flow.
3. the method for claim 1, is characterized in that, core network control node sends after indication to terminal, also comprises step: start timer;
Core network control node is received after connection request again, selects the step of the local gateway of Home eNodeB association comprise for terminal: core network control node is again received after connection request before timer expiry, is the local gateway of terminal selection Home eNodeB association.
4. method as claimed any one in claims 1 to 3, is characterized in that, core network control node is Mobility Management Entity MME or Serving GPRS Support Node SGSN.
5. the method for claim 1, is characterized in that, described in be designated as: by the cause value information unit value of expanding in a NAS message, represent described indication.
6. an implementation method of selectivity IP data distribution SIPTO, is characterized in that, comprises the following steps:
Terminal sends after connection request, the indication sending by a NAS message sink core network control node, and wherein, described indication is that core network control node is received after the connection request of terminal transmission, the judgement current community of terminal sends while being home base station cells;
Terminal, according to the indication of receiving, again sends connection request to identical APN APN after current connection has been set up;
Terminal sends after connection request again, by the 2nd NAS message sink core network control node, send by traffic flow template TFT corresponding to streamed data, wherein, in terminal, again send after connection request, make core network control node again receive after connection request, for terminal is selected the local gateway of Home eNodeB association and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
7. method as claimed in claim 6, is characterized in that, core network control node is Mobility Management Entity MME or Serving GPRS Support Node SGSN.
8. method as claimed in claim 6, is characterized in that, described in be designated as: by the cause value information unit value of expanding in a NAS message, represent described indication.
9. a core network control node equipment, is characterized in that, comprising:
Interface module, for receiving after the connection request of terminal transmission, the judgement current community of terminal is home base station cells, and while determine activating the SIPTO of every the Internet protocol flows per IP flow, by a NAS message, to terminal, send indication, indicating terminal again sends connection request to identical APN APN after current connection has been set up;
Control module, for again receiving after connection request, for terminal is selected the local gateway of Home eNodeB association, and indicates interface module will to be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
10. core network control node equipment as claimed in claim 9, it is characterized in that, also comprise: judge module, for according to the SIPTO strategy of the SIPTO strategy of the subscription data of terminal or local configuration, judges whether to activate the SIPTO of every the Internet protocol flows per IP flow.
11. core network control node equipment as claimed in claim 9, is characterized in that, interface module also, for sending after indication to terminal, starts the timer in core network control node equipment;
Control module is again received after connection request before timer expiry, is the local gateway of terminal selection Home eNodeB association.
12. core network control node equipment as described in any one in claim 9 to 11, is characterized in that, core network control node equipment is Mobility Management Entity MME or Serving GPRS Support Node SGSN.
13. core network control node equipment as claimed in claim 9, is characterized in that, described in be designated as: by the cause value information unit value of expanding in a NAS message, represent described indication.
14. 1 kinds of terminal equipments, is characterized in that, comprising:
Receiver module, be used for sending after connection request, the indication sending by a NAS message sink core network control node, wherein, described indication is that core network control node is received after the connection request of terminal transmission, and the judgement current community of terminal sends while being home base station cells;
Sending module for according to the indication of receiving, again sends connection request to identical APN APN after current connection has been set up;
Receiver module also for by the 2nd NAS message sink core network control node, send by traffic flow template TFT corresponding to streamed data, wherein, in terminal, again send after connection request, make core network control node again receive after connection request, for terminal is selected the local gateway of Home eNodeB association and will be sent to terminal by traffic flow template TFT corresponding to streamed data by the 2nd NAS message.
15. terminal equipments as claimed in claim 14, is characterized in that, core network control node is Mobility Management Entity MME or Serving GPRS Support Node SGSN.
16. terminal equipments as claimed in claim 14, is characterized in that, described in be designated as: by the cause value information unit value of expanding in a NAS message, represent described indication.
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| Selected IP Traffic Offload for UMTS at Iu-PS;Huawei;《3GPP TSG SA WG2 Meeting #75 TD S2-095961》;20090904;全文 * |
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