CN101534493A - Method, device and communication system for triggering session setup - Google Patents
Method, device and communication system for triggering session setup Download PDFInfo
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- CN101534493A CN101534493A CN200810026777A CN200810026777A CN101534493A CN 101534493 A CN101534493 A CN 101534493A CN 200810026777 A CN200810026777 A CN 200810026777A CN 200810026777 A CN200810026777 A CN 200810026777A CN 101534493 A CN101534493 A CN 101534493A
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Abstract
The embodiment of the invention provides a method, a device and a communication system for triggering session setup. The method includes the following steps of: receiving an IP address distributed to a terminal by the network; and sending the IP address distributed to the terminal to a server NAS so as to trigger session setup. The embodiment also provides a device and a communication system for triggering session setup. By implementing the technical proposal provided by the embodiment, an AR (access router) receives the IP address distributed to the terminal by the network and reports the address to the NAS so as to trigger the session setup, thus being capable of setting up session according to the IP address.
Description
Technical field
The present invention relates to the communications field, relate in particular to method, device and communication system that a kind of triggering session is set up.
Background technology
It is a kind of wireless metropolitan area network technology based on IEEE 802.16 standards that microwave interoperability WiMAX (Worldwide Interoperability for MicrowaveAccess) is inserted in the whole world.The WiMAX network mainly comprises terminal MS/SS (travelling carriage Mobile Station/ subscriber board Subscriber Station), accessing business network ASN (Access Service Network) and is connected three parts of service network CSN (Connecting Service Network).
Terminal SS/MS: the user uses this devices accessing WiMAX network.
Accessing business network ASN: the network function set of wireless access service is provided for the WiMAX terminal.ASN comprises base station BS (Base Station) and accessing business network gate ASN GW; Wherein the major function of BS is: L2 (Layer 2, the layer 2) connection, RRM of BS and MS etc. are provided; The major function of ASN-GW is: for MS authentication function provides termination function, provide for MS and switch in Relay (relaying) function (as IP address assignment), ASN of L3 (Layer 3, layer 3) information etc.
Connect service network (CSN): for the WiMAX terminal provides IP Connection Service.The major function that CSN provided is: the IP address assignment of MS, Internet insert, AAA proxy or server, based on user's authorization control etc.CSN comprises prepaid server PPS, AAA server logic entities such as (AAA Server).
WiMAX according to the structure of simple IP (Simple IP) pattern networking as shown in Figure 1.The pre-configured R3 tunnel of equipment granularity between the core router CR (Core Router) among couple in router AR among the ASN (Access Router) and the CSN, the data surface of MS inserts CR by AR, thereby obtains to insert the ability of Internet.Wherein the IP address of MS is distributed by the DHCP among the CSN (Dynamic Host Control Protocol, DHCP) Server, and this IP address is unique in CR.
PCC (Policy and Charging Control, policy and charging control) framework is the general policy control and the charging controlled function framework that are suitable for various IP connection Access Networks (IP Connective Access Network, IP CAN).Wherein policy control comprises gate (Gating Control) and QoS control (QoSControl); The control of chargeing refers to the charging Flow Based Charging (FBC) based on stream.The Core Feature of PCC framework comprises PCRF (policy charging rule function) and PCEF (policy and charging enforcement function), when disposing the PCC framework in the WiMAX network, as shown in Figure 2.
In the prior art, the IP CAN Session of MS (IP CAN session) is based on the IP session of MS, and promptly MS has obtained the IP CAN session that the IP address promptly can be set up correspondence for MS, and the IPCAN session also will stop when this IP address stops.When the AR for MS service moves, the IP of MS need redistribute, so will set up new IP CAN session for MS.
When AR and A-PCEF/Anchor SFA were positioned at different ASN GW, A-PCEF/Anchor SFA can't learn the new IP that MS obtains, thereby can not set up new IP CAN session for MS.
Summary of the invention
The technical problem that the embodiment of the invention will solve is, the method, device and the communication system that provide a kind of triggering session to set up, so that couple in router AR is after receiving that network is the terminal MS IP address allocated, and the foundation of triggering session.
The method that the embodiment of the invention provides a kind of triggering session to set up comprises:
Receiving network is the IP address of terminal distribution;
Set up with triggering session for the IP address of terminal distribution sends to network access server NAS described.
The device that the embodiment of the invention also provides a kind of triggering session to set up comprises:
IP address receiving element is used to receive the IP address from the terminal of couple in router AR;
The unit is initiated in session, is used for initiating a session request according to described IP address.
The embodiment of the invention also provides a kind of couple in router AR, comprising:
First module is used to receive the IP address that network is a terminal distribution;
Second module is used to send a notification message to network access server NAS, and described notification message carries the described IP address of terminal distribution that is.
Also a kind of communication system of the embodiment of the invention comprises:
Couple in router AR, but described AR connects with network access server NAS with communication mode;
Described AR is used to receive the IP address that network is a terminal distribution, sends a notification message to described NAS, and described notification message carries the described MS IP address allocated that is.
By the technical scheme that the embodiment of the invention provides, receiving network by couple in router AR is the IP address of terminal distribution, triggering session is responded with in described address set up on network access server NAS, makes and can set up session according to described IP address.
Description of drawings
Fig. 1 is a WiMAX simple IP networking schematic diagram in the prior art;
Fig. 2 is a PCC system schematic in the prior art;
Fig. 3 is the schematic flow sheet of the method set up of the session that provides of the embodiment of the invention;
Fig. 4 is the idiographic flow schematic diagram of the embodiment of the invention one;
Fig. 5 is the idiographic flow schematic diagram of the embodiment of the invention two;
Fig. 6 is the structural representation of the device set up of the session that provides of the embodiment of the invention;
Fig. 7 is the structural representation of the couple in router AR that provides of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Please refer to shown in Figure 3ly, the method that a kind of triggering session that the embodiment of the invention provides is set up may further comprise the steps:
Receiving network is the IP address of terminal distribution;
Set up with triggering session for the IP address of terminal distribution sends to network access server NAS described.
By the technical scheme of the embodiment of the invention, receive that network is can to trigger to NAS this IP reporting address behind the IP address of terminal distribution to set up session.In the embodiment of the invention, as can being that to receive network by couple in router AR be the IP address of terminal distribution, described IP reporting address being given respond with triggering session on the network access server NAS and set up.
Below adopt two embodiment that the idiographic flow of said method is described.
Embodiment one: AR moves but does not require the MS discrimination weight, as shown in Figure 4:
1, AR moves, and the execution handoff procedure (Handover, HO).AR migration herein may be owing to multiple reason causes, the routing optimality that for example MS moves under the new AR range of management, the load balance (loadbalance) of AR causes etc.In the handoff procedure, new AR obtains switch contexts from network access server NAS (Network Access Server), and wherein, described switch contexts can comprise and presets stream information.Further, in the embodiment of the invention, if described NAS also moves, then described new AR obtains before the switch contexts, and new NAS will obtain switch contexts and/or security information from old NAS.
2, MS initiates dhcp process, obtains new IP address.In ASN, include under the situation of DHCP Relay (DHCP relay) or DHCP Proxy (DHCP proxy), this process can for:
Can send out DHCP Discover (DHCP discovery) broadcast to DHCP Relay if include DHCP Relay:MS in the ASN, DHCP Relay receives this message, and forwards is arrived DHCP Server; DHCP Server is MS distributing IP address, described IP address allocated can be included in DHCP Offer (DHCP supply) unicast messages and issue DHCP Relay, and DHCP Relay gives MS with described DHCP Offer forwards.MS can be carried on the IP address that obtains in DHCP Request (DHCP request) message and issue DHCP Relay, and DHCP Relay gives DHCP Server with described DHCP Request forwards, and instruct MS confirms to use this IP address; DHCP Server can send DHCP Ack (DHCP replys) message of portability configuration information to DHCP Relay, and DHCP Relay gives MS with described DHCP Ack forwards.
Can send out DHCP Discover broadcast to DHCP Proxy if include DHCP Proxy:MS in the ASN, DHCP Proxy receives described DHCP Discover broadcast, be MS distributing IP address, described IP address allocated can be included in the DHCP Offer unicast messages and issue MS.MS can comprise the IP address that obtains in the DHCP Request message and issues DHCP Proxy, and instruct MS confirms to use this IP address; DHCP Proxy can send the DHCP Ack message of portability configuration information to MS.
After the success of MS distributing IP address, can carry out following step.
3, couple in router AR reception network is described MS IP address allocated.As, in the embodiment of the invention, preferably, if DHCP Relay receives DHCP Request message or DHCP Ack message, or DHCP Proxy receives DHCP Request message, can be described DHCP Relay or DHCP Proxy with described for the MS IP address allocated sends to described new AR, described new AR sends to NAS and carries the described notification message of MS IP address allocated that is, be used for notifying the IP address of described MS to change, as being R4 message to described NAS.
In the embodiment of the invention, described DHCP Relay, DHCP Proxy, AR are that example describes with the logical functional entity just, in concrete networking, described DHCP Relay, DHCP Proxy, AR can be physical entities independently, also can be to be integrated among the ASN GW as logical functional entity.If DHCPRelay, DHCP Proxy, AR are physical entity independently, then DHCP Relay or DHCP Proxy can send to described AR for the MS IP address allocated is carried on described in the message; If DHCP Relay, DHCPProxy, AR are integrated among the ASN GW as logical functional entity, then can communicate by inside story or inner primitive between them, then DHCP Relay or DHCP Proxy can send to described AR for the MS IP address allocated is carried in inside story or the inner primitive with described.
4, NAS receives described notification message, knows the described MS IP address allocated that is from described notification message.Optionally, in the embodiment of the invention, if network design the PCC framework, the access network policy charge execution function A-PCEF that then is integrated among the described NAS initiates to set up new session, as being to initiate to set up new IPCAN session, detailed process is:
Described A-PCEF can send a request message to PCRF, and session is set up in request, can carry described be MS IP address allocated and/or user ID in the described request message;
PCRF receives described request message.Optionally, if do not preserve user's QoS descriptor among the PCRF, PCRF and subscribed database (AAA server or SPR (Subscription Profile Repository for example then, user-subscribed database), HSS (Home Subscriber Server, the local Subscriber), HLR (HomeLocation Register, home location registration) etc.) obtain QoS of customer QoS descriptor (QoSprofile) alternately;
PCRF generates the PCC strategy according to described QoS descriptor, is handed down to described A-PCEF.
5, optional, the A-PCEF among the described NAS carries out described PCC strategy from PCRF, the qos policy information in the described PCC strategy can be sent to AR or Anchor DPF, as can be send to by R4 message as described in AR or Anchor DPF.QoS descriptor in the step 4 is the user's static information that is kept at subscribed database, and the qos policy information in this step is that PCRF dynamically generates according to the QoS descriptor, is included in the described PCC strategy.
Optionally, in the embodiment of the invention, because presetting the QoS of stream can not change, NAS/A-PCEF also can send the message of the grader after having renewal to AR or Anchor DPF herein, as being R4 message, or the message of indication AR or the existing grader of Anchor DPF renewal, as being R4 message.
In the embodiment of the invention, described AR, Anchor DPF are that example describes with the logical functional entity just, in concrete networking, described AR, Anchor DPF can be independent physical entities, also can be used as logical functional entity and are integrated in the same physical entity.
6, AR or Anchor DPF upgrade and preset the stream carrying.
Here, AR or Anchor DPF preset the stream carrying according to described qos policy information updating from NAS/A-PCEF; Also can be to upgrade the grader that presets the stream carrying according to the message that the described message that carries the grader after the renewal or described indication AR or Anchor DPF upgrade existing grader.Perhaps, if network is not disposed the PCC framework, then AR can preset the stream carrying according to described the renewal for the MS IP address allocated, as can be according to as described in upgrade for the MS IP address allocated and to preset the grader that stream carries; Perhaps described AR sends to described Anchor DPF with described for the MS IP address allocated, described Anchor DPF can preset the stream carrying according to described the renewal for the MS IP address allocated, as can be according to as described in upgrade for the MS IP address allocated and to preset the grader that stream carries.
The embodiment of the invention, is set up with triggering session to the newly assigned IP of network access server NAS reporting terminal address by couple in router AR, makes and can set up session according to new IP address.Simultaneously, the embodiment of the invention also can realize upgrading according to strategy or the new IP of terminal address and preset the stream carrying.
Embodiment two: AR moves but requires the MS discrimination weight, as shown in Figure 5:
Present embodiment and embodiment one are similar, and institute's difference is in the embodiment of the invention, if AR moves, NAS can pass through to send EAP request/Identity message to BS, thereby initiates the networking authentication process, if the authentication success, then carry out dhcp process, for MS distributes new IP address.
Except that the described situation of the foregoing description, further, under the simple IP scene, after network was terminal distribution IP, if current AR is positioned at different gateways with NAS, then AR can be to the IP address of NAS reporting terminal, do corresponding operation to trigger NAS, for example NAS initiates the foundation of IP CAN session.
Note, cause AR and NAS be positioned at different gateways may since the AR migration cause, also may be network to be that the prewired AR of BS is different with NAS cause, the perhaps reason in other network realization, the embodiment of the invention no longer describes in detail.
Please refer to shown in Figure 6ly, the device that the embodiment of the invention four provides a kind of triggering session to set up comprises:
IP address receiving element is used to receive the IP address from the terminal of couple in router AR;
The unit is initiated in session, is used for initiating a session request according to described IP address.
Described device setting can be in network access server NAS.
The embodiment of the invention be the IP address of terminal distribution by receiving from what couple in router AR reported, and initiates a session request according to this IP address, makes and can set up session according to new IP address initiation.
Please refer to shown in Figure 7ly, the embodiment of the invention provides a kind of couple in router AR, comprising:
Further, in the embodiment of the invention, described AR also comprises:
Three module 704 is used for upgrading presetting and flows carrying.
Further, in the embodiment of the invention, described AR also comprises:
Four module 706 is used to receive the message from NAS/A-PCEF, carries qos policy information or information of classifier in the described message.
Further, described three module 704 comprises that first presets stream update module or second and preset the stream update module, and described first presets the stream update module is used for presetting stream and carrying according to described the renewal for the MS IP address allocated that described first module receives; Described second presets the stream update module is used for the qos policy information of carrying according to the message that described four module 706 receives or information of classifier and upgrades and preset the stream carrying.
The embodiment of the invention is the IP address of terminal distribution by first module, the 700 reception networks of couple in router AR, report described IP address by second module 702 to network access server NAS, set up with triggering session, make and to set up session according to new IP address.Simultaneously, the embodiment of the invention also can realize upgrading according to strategy or the new IP of terminal address and preset the stream carrying by three module 704.
The embodiment of the invention provides a kind of communication system, and described system comprises couple in router AR, but described AR connects with NAS with communication mode;
Described AR, being used to receive network is the MS IP address allocated, sends a notification message to NAS, described notification message carries the described IP address of terminal distribution that is.
Further, in the embodiment of the invention, described system can also comprise DHCP Relay or DHCPProxy; It is the MS IP address allocated that then described AR can receive from the described of DHCP Relay or DHCP Proxy.
Further, in the embodiment of the invention, described system can also comprise A-PCEF, PCRF;
Described NAS receive from AR for the MS IP address allocated, the A-PCEF among the described NAS of being integrated in initiates to set up new session, as being IP CAN session;
Described A-PCEF is integrated among the described NAS, is used for sending a request message to described PCRF, and session is set up in request, can carry the IP and/or the user ID of the distribution of the described MS of being in the described request message;
Described PCRF receives described request message, generates the PCC strategy according to the QoS descriptor, is handed down to described A-PCEF.
Further, in the embodiment of the invention, described system can also comprise subscribed database, is used to preserve user's QoS descriptor; If described PCRF does not preserve user's QoS descriptor, then PCRF also be used for described subscribed database alternately to obtain user's QoS descriptor.
Further, in the embodiment of the invention, described system can also comprise Anchor DPF,
Described A-PCEF is used to carry out the PCC strategy, can also be used for the qos policy information of described PCC strategy or the grader after upgrading sends to described AR or Anchor DPF;
Described AR or Anchor DPF are used for upgrading presetting and flow carrying.
In the embodiment of the invention, described AR or Anchor DPF upgrade according to the grader after described qos policy information or the renewal to preset the stream carrying, also can be that described AR presets the stream carrying according to described the renewal for the MS IP address allocated, for the MS IP address allocated sends to described Anchor DPF, described Anchor DPF presets the stream carrying according to described the renewal for the MS IP address allocated to perhaps described AR with described.
The embodiment of the invention reports IP address into terminal distribution by couple in router AR to network access server NAS, sets up with triggering session, makes and can set up session according to new IP address.Simultaneously, the embodiment of the invention also can realize upgrading according to strategy or the new IP of terminal address and preset the stream carrying.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, this program comprises the steps: when carrying out
Receiving network is the IP address of terminal distribution;
Set up with triggering session for the IP address of terminal distribution sends to network access server NAS described.
The above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (21)
1, a kind of method of triggering session foundation is characterized in that, comprising:
Receiving network is the IP address of terminal distribution;
Set up with triggering session for the IP address of terminal distribution sends to network access server NAS described.
2, method according to claim 1 is characterized in that, the IP address that described reception network is a terminal distribution is specially:
It is the IP address of terminal distribution that couple in router AR receives from the described of DHCP Relay or DHCP Proxy.
3, method according to claim 1 is characterized in that, also comprises:
Access network policy charging execution function entity A-PCEF in described network access server NAS sends session to policy charging rule functional entity PCRF and sets up request, carries the described IP address and/or the user ID of terminal distribution that be in the described request message;
Described PCRF receives described request message, according to QoS descriptor generation strategy charging control PCC strategy, gives described A-PCEF with described PCC policy distribution.
4, method according to claim 3 is characterized in that, further comprises:
Described PCRF and subscribed database obtain user's QoS descriptor alternately.
5, method according to claim 3 is characterized in that, further comprises:
Described A-PCEF carries out described PCC strategy, with the qos policy information in the described PCC strategy or the message of the grader after carrying renewal or indication couple in router AR or the anchor data path entity A nchorDPF message of upgrading existing grader send to described AR or Anchor DPF.
6, method according to claim 5 is characterized in that, also comprises:
Described AR or Anchor DPF preset the stream carrying according to the qos policy information updating of receiving; Perhaps
Described AR or Anchor DPF preset the grader of stream carrying according to the information updating that described message of carrying the grader after the renewal or described indication AR or Anchor DPF upgrade existing grader.
7, method according to claim 1 is characterized in that, further comprises:
Described AR upgrades the grader that presets the stream carrying according to described IP address for terminal distribution; Perhaps
For the IP address of terminal distribution sends to Anchor DPF, described Anchor DPF upgrades the grader that presets the stream carrying according to described IP address for terminal distribution to described AR with described.
8, method according to claim 2 is characterized in that, the described IP address for terminal distribution that described couple in router AR receives from DHCP Relay or DHCP Proxy also comprises before:
Described terminal is initiated the networking authorizing procedure to the base station, and described terminal is carried out authentication.
According to each described method of claim 1-8, it is characterized in that 9, described session is that IP connects the Access Network session.
10, a kind of device of triggering session foundation is characterized in that, comprising:
IP address receiving element is used to receive the IP address from the terminal of couple in router AR;
The unit is initiated in session, is used for initiating a session request according to described IP address.
11, a kind of couple in router AR is characterized in that, comprising:
First module is used to receive the IP address that network is a terminal distribution;
Second module is used to send a notification message to network access server NAS, and described notification message carries the described IP address of terminal distribution that is.
12, couple in router AR according to claim 11 is characterized in that, also comprises:
Three module is used for upgrading presetting and flows carrying.
13, couple in router AR according to claim 12 is characterized in that, also comprises:
Four module is used to receive the message from NAS/A-PCEF, carries qos policy information or information of classifier in the described message.
14, couple in router AR according to claim 13 is characterized in that, described three module comprises:
First presets the stream update module, is used for presetting the stream carrying according to the described IP address renewal for terminal distribution that described first module receives; Or
Second presets the stream update module, and the stream carrying is preset in the qos policy information or the information of classifier renewal that are used for carrying according to the message that described four module receives.
15, a kind of communication system is characterized in that, comprising:
Couple in router AR, but described AR connects with network access server NAS with communication mode;
Described AR is used to receive the IP address that network is a terminal distribution, sends a notification message to described NAS, and described notification message carries the described IP address of terminal distribution that is.
16, communication system according to claim 15 is characterized in that, described system also comprises DHCPRelay or DHCP Proxy;
Described AR, being used to receive from the described of described DHCP Relay or DHCP Proxy is the MS IP address allocated.
17, communication system according to claim 15 is characterized in that, described system also comprises access network policy charge execution function A-PCEF and policy charging rule functional entity PCRF;
Described A-PCEF is integrated among the described NAS, be used for being the IP address of terminal distribution from AR according to what described NAS received, send a request message to described PCRF, session is set up in request, and carrying described in the described request message is the IP and/or the user ID of the distribution of terminal;
Described PCRF is used to receive described request message, generates the PCC strategy according to the QoS descriptor, is handed down to described A-PCEF;
Described A-PCEF is used to carry out described PCC strategy.
18, communication system according to claim 17 is characterized in that, described system also comprises:
Subscribed database is used to preserve user's QoS descriptor;
Described PCRF, also be used for described subscribed database alternately to obtain user's QoS descriptor.
19, communication system according to claim 15 is characterized in that, described AR also is used for upgrading the grader that presets the stream carrying according to described IP address for terminal distribution.
20, communication system according to claim 15 is characterized in that, described system also comprises anchor data path entity A nchor DPF;
Described AR also is used for sending to described Anchor DPF with described for the IP address of terminal distribution;
Described Anchor DPF is used for upgrading the grader that presets the stream carrying according to described IP address for terminal distribution.
21, communication system according to claim 17 is characterized in that, described system also comprises anchor data path entity A nchor DPF;
Described A-PCEF also is used for the qos policy information of described PCC strategy or the message of the message of the grader after carrying renewal or indication couple in router AR or the existing grader of Anchor DPF renewal sends to described AR or Anchor DPF;
Described AR or Anchor DPF preset the stream carrying according to the qos policy information updating of receiving; Perhaps
Described AR or Anchor DPF preset the grader of stream carrying according to the information updating that described message of carrying the grader after the renewal or described indication AR or Anchor DPF upgrade existing grader.
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| CN200810026777A CN101534493A (en) | 2008-03-13 | 2008-03-13 | Method, device and communication system for triggering session setup |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188447A1 (en) * | 2017-04-13 | 2018-10-18 | 电信科学技术研究院有限公司 | Ip address configuration method and device |
| CN110324388A (en) * | 2018-03-30 | 2019-10-11 | 华为技术有限公司 | Redirection method and device |
-
2008
- 2008-03-13 CN CN200810026777A patent/CN101534493A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018188447A1 (en) * | 2017-04-13 | 2018-10-18 | 电信科学技术研究院有限公司 | Ip address configuration method and device |
| CN110324388A (en) * | 2018-03-30 | 2019-10-11 | 华为技术有限公司 | Redirection method and device |
| CN110324388B (en) * | 2018-03-30 | 2022-05-13 | 华为技术有限公司 | Redirection method and device |
| US11689956B2 (en) | 2018-03-30 | 2023-06-27 | Huawei Technologies Co., Ltd. | Relocation method and apparatus |
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