CN102595388A

CN102595388A - Method and device for processing UE context

Info

Publication number: CN102595388A
Application number: CN2012100636268A
Authority: CN
Inventors: 于益俊; 朱志明
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-04-30
Filing date: 2008-04-30
Publication date: 2012-07-18
Anticipated expiration: 2028-04-30
Also published as: CN102595388B

Abstract

The invention discloses a method and a device for processing UE (User Equipment) context. The method for processing the UE context comprises the following steps: an access network discovery and selection functional entity receives a deletion instruction message after the status of UE is changed, and deletes the UE context corresponding to the UE according to the deletion instruction message. The device for processing the UE context comprises UE, wireless network equipment and an access network discovery and selection functional entity which correspond to the above method. By adopting the embodiment of the invention, an ANDSF (Access Network Discovery and Selection Function) is enabled to delete invalid UE context in time, so that the problems that the stored junk data is too much and data is transmitted to wrong UE are avoided.

Description

The method and apparatus of processing user equipment context

Technical field

The present invention relates to wireless communication technology field, especially a kind of method and apparatus of processing user equipment context.

Background technology

In order to tackle the challenge of wireless broad band technology; Long Term Evolution plan (Long Term Evolution; LTE) defined a kind of framework---packet network (the Evolved Packet System of evolution of new communication network; EPS), EPS has merged plurality of access modes, comprises that 3GPP inserts, believable non-3GPP inserts, incredible non-3GPP inserts.(User Equipment UE), or is called subscriber equipment to subscriber equipment; Behind the access network; (Access Ne twork Discovery and Selection Function ANDSF) collects the network condition information of access network, like load condition etc. for access network discovery in the network and selection functional entity; Corresponding strategies according to operator; Like the access way that UE can use, send Access Network information and switchover policy to UE, UE switches in the corresponding Access Network according to this Access Network information and switchover policy.In order to make ANDSF can answer the UE request to send data or when switchover policy changes, initiatively send data to UE to UE; The context that needs record UE among the ANDSF; Generally; Because what transmit between UE and the ANDSF is the IP packet, so comprise the IP address of UE in the ANDSF UE context that need write down.When ANDSF need can send the data to UE according to this IP address when UE sends data.

In the EPS network, the IP address of UE generally is by packet data gateway (Packet Data Network Gateway, P-GW) dynamic assignment; After the UE state variation, from net or releasing IP addresses, the IP address of this UE may be assigned to another UE like UE; But; Since ANDSF can't perception UE state variation, still write down the context of original UE, so ANDSF may send the data to the UE of a mistake during according to the IP address transmission data of record.The inventor finds that in realizing process of the present invention there is following problem in prior art: after the UE state variation; Because the state transformation of ANDSF perception in time UE; And then can not delete invalid UE context in time; Cause the junk data that writes down among the ANDSF too much, also possibly send the data to wrong UE.

Summary of the invention

The embodiment of the invention provides a kind of method and apparatus of processing user equipment context, makes ANDSF after the UE state variation, can delete invalid UE context in time.

The embodiment of the invention provides a kind of method of processing user equipment context, comprising:

Access network discovery and selection functional entity receive the deletion Indication message after status of user equipment changes;

Access network discovery is deleted the customer equipment context corresponding with said subscriber equipment with selection functional entity according to said deletion Indication message.

The embodiment of the invention also provides a kind of subscriber equipment, comprising:

Receive information updating module, be used to receive Access Network information updating message, carry customer equipment identification in the said Access Network information updating message;

Judge module is used to judge whether the customer equipment identification of reception is identical with the customer equipment identification of record, if not, and the customer equipment context that the indication deletion is corresponding with the customer equipment identification of said reception.

The embodiment of the invention also provides a kind of access network discovery and selection functional entity, is used to collect the network condition information of each access network, comprising:

The accepting state update module is used for changing the back at status of user equipment and receives the deletion Indication message, carries customer equipment identification in the said deletion Indication message;

Removing module is used for the deletion customer equipment context corresponding with said customer equipment identification after receiving said deletion Indication message.

The embodiment of the invention also provides a kind of Wireless Communication Equipment, is used to connect subscriber equipment and access network discovery and selection functional entity, it is characterized in that, comprising:

Address module, the IP address that is used to write down said access network discovery and selection functional entity;

Sending module; After being used to perceive the status of user equipment change; Send the deletion Indication message according to said IP address to said access network discovery and selection functional entity, said deletion Indication message is used to indicate said access network discovery and the selection functional entity deletion customer equipment context corresponding with said subscriber equipment.

Can know by technique scheme whether ANDSF can change according to the passive UE of the detecting state of this UE sign through in sending to the packet of UE, carrying the UE sign in the embodiment of the invention, if the UE state changes, then deletes the invalid UE context of preserving; Perhaps, UE changes the back at state and initiatively informs to ANDSF through Wireless Communication Equipment, makes ANDSF know that the UE state changes the invalid UE context that the back deletion is preserved.Therefore, can make the ANDSF invalid UE context of deletion in time, avoid the UE of wrong to send data through the embodiment of the invention.

Description of drawings

Fig. 1 is the schematic network structure that the method embodiment one of processing user equipment context of the present invention provides;

Fig. 2 is for carrying out the schematic flow sheet that network switches through network configuration shown in Figure 1;

Fig. 3 is the schematic flow sheet of the method embodiment one of processing user equipment context of the present invention;

Fig. 4 obtains the schematic flow sheet of the method one of customer equipment identification for the method embodiment one of processing user equipment context of the present invention;

Fig. 5 obtains the schematic flow sheet of the method two of customer equipment identification for the method embodiment one of processing user equipment context of the present invention;

Fig. 6 is the schematic network structure that the method embodiment two of processing user equipment context of the present invention provides;

Fig. 7 is the schematic flow sheet of the method embodiment two of processing user equipment context of the present invention;

Fig. 8 is the schematic flow sheet of the method one of the method embodiment two Wireless Communication Equipment record ANDSF address of processing user equipment context of the present invention;

Fig. 9 is the schematic flow sheet of the method two of the method embodiment two Wireless Communication Equipment record ANDSF address of processing user equipment context of the present invention;

Figure 10 is the schematic flow sheet of the method three of the method embodiment two Wireless Communication Equipment record ANDSF address of processing user equipment context of the present invention;

Figure 11 is the structural representation of subscriber equipment embodiment of the present invention;

Figure 12 is the structural representation of access network discovery of the present invention and selection functional entity embodiment;

Figure 13 is the structural representation of Wireless Communication Equipment embodiment of the present invention.

Embodiment

The present invention handles the contextual method embodiment of UE and comprises:

Steps A: ANDSF receives the deletion Indication message after the UE state changes.Wherein, The deletion Indication message can change the back at state by UE and send to ANDSF; Perhaps can be by ANDSF self-generating after the response that does not receive UE; (specifically can referring to following method embodiment one), perhaps can learn that the UE state changes the back and sends (specifically can referring to following method embodiment two) to ANDSF by Wireless Communication Equipment.

Step B:ANDSF is according to the said deletion Indication message deletion UE context corresponding with said UE.

Through accompanying drawing and specific embodiment, technical scheme of the present invention is done further detailed description below.

Referring to Fig. 1, the schematic network structure for the method embodiment one of processing user equipment context of the present invention provides comprises: belong to subscriber equipment UE11, belong to the ANDSF12 of operator's equipment.UE11 is connected to ANDSF through the IP tunnel that 3GPP access way or credible and incredible non-3GPP access way provide.Reference point interface between UE and the ANDSF is S14, and ANDSF can also be connected to non-3 GPP access network network, information such as the load condition of collection network through the S15 interface.UE can carry out the network switching according to Access Network information and the switchover policy that ANDSF sends.

Referring to Fig. 2,, comprising for carry out the schematic flow sheet that network switches through network configuration shown in Figure 1:

Step 21:UE is connected to an IP access network, obtains the IP address and sets up IP tunnel.This IP access network can be the 3GPP network, and like the EPS network, perhaps this IP access network is non-3GPP network, like WiMax/WLAN network etc.

Step 22:UE obtains the IP address of ANDSF.

Step 23:UE sends the Access Network information request message according to this IP address to ANDSF.

Step 24:ANDSF sends the Access Network info response message that comprises Access Network information and switchover policy to UE.

Step 25:UE carries out access network selection and handover decisions according to this Access Network information and switchover policy.

When the handover decisions condition of step 26:UE satisfied, UE carried out internetwork switching.

According to the principle that network is found and selected, ANDSF can answer the request of UE to send data to UE as stated, can also initiatively send data to UE, after changing at switchover policy, and ANDSF proactive notification UE.Are the IP addresses according to UE at ANDSF when UE sends data, therefore in the UE of ANDSF context, record the IP address of UE.Because the IP address of UE is a dynamic assignment, after the UE state changes, connect release from net or IP like UE, network possibly given the IP address assignment of writing down among the ANDSF other UE.If ANDSF is according to the IP address transmission data that writes down in the original UE context, because this IP address has been distributed to another UE probably, the problem that therefore causes data to be sent out probably by mistake.Simultaneously, discharge because original UE has connected from net or IP, its corresponding UE context is just invalid, and these invalid overabundance of datas of storing in the ANDSF need be after the UE state changes, in time the context of the UE that changes of deletion state.

Referring to Fig. 3, be the schematic flow sheet of the method embodiment one of processing user equipment context of the present invention, this embodiment is need be when UE sends data, according to the feedback deletion UE context of UE at ANDSF.This embodiment comprises:

Step 31:ANDSF sends Access Network information updating message to the UE of the IP address of its record indication, carries the UE sign in the said Access Network information updating message.

Step 35: this UE judges whether the UE sign that receives is identical with the UE sign of record, if, execution in step 36; If not, the corresponding UE context of indication ANDSF deletion UE sign its record and said reception.

Step 36:UE sends Access Network information updating response message to ANDSF, and indication ANDSF upgrades successfully.Be that the UE state does not feed back according to existing procedure when changing.

Wherein, the obtaining and write down and can adopt following method of customer equipment identification:

Referring to Fig. 4, for the method embodiment one of processing user equipment context of the present invention obtains the schematic flow sheet of the method one of customer equipment identification, this method provides customer equipment identification by UE to ANDSF, comprising:

Step 41:UE sends the Access Network information request message to ANDSF, carries the UE sign in this Access Network information request message.This UE sign can be the permanent identification of UE; Like international mobile subscriber identity (Interna tional Mobile Subscriber Identity; IMSI), travelling carriage integrated services digital network number (Mobile Station Integrated Services Digital Network; MSISDN), network access Identifier (Network Access Identifier; NAI) etc., perhaps this UE sign also can be for the temporary mark of Access Network distribution, like global unique temporary identity (Globally Unique Temporary Ident ity; GUTI), the grouping Temporary Mobile Station Identity (Packet Temporary Mobile Station Ident ity, P-TMSI) etc.

The UE sign that step 42:ANDSF record UE provides is sent the Access Network info response message to UE.

Referring to Fig. 5, for the method embodiment one of processing user equipment context of the present invention obtains the schematic flow sheet of the method two of customer equipment identification, this method provides customer equipment identification by ANDSF, comprising:

Step 51:UE sends the Access Network information request message to ANDSF.

Step 52:ANDSF writes down this UE sign, as is recorded in the UE context corresponding with this UE for this UE distributes a unique UE sign.

Step 53:ANDSF sends the Access Network info response message to UE, carries the UE sign that ANDSF distributes in this Access Network info response message.

After step 54:UE received this Access Network info response message, the ANDSF that record wherein carries was the UE sign that UE distributes.

Wherein, indication ANDSF deletion can specifically comprise with the corresponding UE context of UE sign of said reception:

Step 391:UE sends the wrong deletion Indication message of indication UE sign or abandons said Access Network information updating message to ANDSF.If directly abandon said Access Network information updating message, ANDSF will can not receive response message that should Access Network information updating message, and ANDSF is not if receive response in Preset Time, then self-generating deletion Indication message.

UE context among the step 392:ANDSF deletion ANDSF.ANDSF can delete corresponding UE context behind the deletion Indication message that receives said indication customer equipment identification mistake; Perhaps; ANDSF can also delete corresponding UE context according to the deletion Indication message of self-generating after not receiving Access Network information updating response message.

Above-mentioned flow process shows packet and the UE support ANDSF function that correctly receives the ANDSF transmission as UE, when just the IP address of this UE possibly be assigned to another UE, and the method that ANDSF handles the UE context.Owing to also possibly exist UE not support the ANDSF function maybe possibly not have correctly to receive the problem of packet, so this embodiment can further include after step 31:

Step 32:UE judges whether the purpose IP address of carrying in the Access Network information updating message is its own IP address, if, execution in step 33; If not, execution in step 34.Owing to communicate through IP tunnel between UE and the ANDSF, so also carry purpose IP address in this Access Network information updating message.

Step 33:UE judges whether to discern said Access Network information updating message, if, execution in step 35, if not, execution in step 34.

Step 34:UE abandons said Access Network information updating message, so ANDSF can not receive Access Network information updating response message.Execution in step 392.

Simultaneously, in order to guarantee to delete the contextual promptness of invalid UE, present embodiment can further include after step 36:

After step 37:ANDSF receives the successful Access Network information updating response message of indication renewal, upgrade the timestamp of its record.Can write down a timestamp in the UE context that writes down among the ANDSF, after receiving the successful Access Network information updating response message of above-mentioned indication renewal or receiving the UE request, upgrade the timestamp that writes down in the context of this UE, make current UE be in activated state.Simultaneously, can start one among this ANDSF, can judge the time that the UE context does not upgrade according to the timestamp that writes down in this timer and the UE context based on the timer of realizing.

Step 38: after the time that the UE context does not upgrade reaches a preset threshold value, execution in step 392.

Present embodiment is through carrying customer equipment identification at ANDSF in the data that UE sends; Whether the state that can confirm UE according to this customer equipment identification changes; After the UE state changed, UE can make corresponding feedback to ANDSF, made ANDSF know that the UE state changes; And then making the invalid UE context of ANDSF deletion, the UE that the junk data of avoiding storing too much reaches wrong sends the problem of data.And present embodiment is when UE sends data, to carry out the judgement whether the UE state changes at ANDSF, is implemented in making ANDSF delete invalid UE context in time under the less situation of existing network change.

Referring to Fig. 6, the schematic network structure for the method embodiment two of processing user equipment context of the present invention provides comprises: belong to the UE11 of subscriber equipment, the ANDSF12 that belongs to operator's equipment and Wireless Communication Equipment 13.UE11 carries out information interaction through Wireless Communication Equipment 13 with ANDSF12.UE need be registered in the IP Access Network before carrying out alternately with ANDSF, obtained the IP address and set up an IP tunnel, and afterwards, UE utilizes this IP address and ANDSF to carry out alternately.ANDSF links to each other with Wireless Communication Equipment through IP network; As, if Wireless Communication Equipment is the Access Network gateway, ANDSF links to each other with the Access Network gateway through the S16 interface; If Wireless Communication Equipment is mobile management entity (Mobility Management Entity; MME) or service universal grouping wireless business supporting node (Serving General Packet Radio Service Support Node, SGSN), ANDSF links to each other with MME/SGSN through the S17 interface; And inner at Access Network, UE sets up two layers with Wireless Communication Equipment and is connected the transmission of IP data bag.Therefore after UE left net or releasing IP addresses, Wireless Communication Equipment can perceive the state variation of this UE, thereby can the change of this UE state be notified to ANDSF.

Referring to Fig. 7; Schematic flow sheet for the method embodiment two of processing user equipment context of the present invention; This embodiment is a Wireless Communication Equipment perceiving after the UE state changes, and this state variation is initiatively reported ANDSF, makes ANDSF according to this state variation that initiatively reports deletion UE context.This embodiment comprises:

Step 71: Wireless Communication Equipment is sent the deletion Indication message to ANDSF after perceiving the change of UE state, carry the UE sign in the said deletion Indication message.This UE sign can be permanent identification (IMSI, MSISDN, NAI etc.), the temporary mark (GUTI, TMSI, IP address etc.) of UE.

Step 72:ANDSF deletion and the corresponding UE context of said UE sign.

Step 73:ANDSF upgrades response message to the Wireless Communication Equipment transmit status.It is optional that this state upgrades response message.

Produce because the deletion Indication message changes the back at the UE state, therefore, present embodiment may further include before step 71:

Step 70: after Wireless Communication Equipment perceives the change of UE state, send the deletion Indication message to ANDSF according to the IP address of the ANDSF that writes down.

Wherein, because Wireless Communication Equipment need be sent said deletion Indication message to ANDSF, so Wireless Communication Equipment need write down the IP address of ANDSF.Can adopt following method to realize the IP address of Wireless Communication Equipment record ANDSF:

Referring to Fig. 8; Write down the schematic flow sheet of the method one of ANDSF address for method embodiment two Wireless Communication Equipment of processing user equipment context of the present invention; Wireless Communication Equipment in this method is the Access Network gateway, and like P-GW, ASN-GW, PDG etc., this method comprises:

Step 81:UE sends the Access Network information request message to ANDSF, and this Access Network information request message is packaged into the two layer tunnel of IP packet through Access Network and sends to the Access Network gateway.Because this packet sends to ANDSF, so the destination address of this IP packet is the IP address of ANDSF.

Step 82: the Access Network gateway is resolved this packet and is obtained purpose IP address, this purpose IP address is recorded in the UE context of Access Network gateway record.

Step 83: the Access Network gateway sends to ANDSF with this Access Network information request message.

Said method is that Access Network is resolved the packet that UE sends to ANDSF, the purpose IP address of writing down this packet, and alternative is, also can be that Access Network is resolved ANDSF to the packet that UE sends, and writes down the source IP address of this packet.

Referring to Fig. 9; Write down the schematic flow sheet of the method two of ANDSF address for method embodiment two Wireless Communication Equipment of processing user equipment context of the present invention; Wireless Communication Equipment in this method is the Access Network gateway, and like P-GW, ASN-GW, PDG etc., this method comprises:

Step 91:ANDSF sends the Access Network info response message to UE, and this Access Network info response message corresponding IP data bag is sent out earlier to the Access Network gateway.Because the Access Network gateway is the Access Network router of UE, so this packet can be sent to the Access Network gateway earlier.And because this Access Network info response message sends to UE by ANDSF, so the source IP address of Access Network info response message corresponding IP data bag is the IP address of ANDSF, and purpose IP address is the IP address of UE.

Step 92: the Access Network gateway is resolved the corresponding packet of this Access Network info response message, obtains source IP address, this source IP address is recorded in the UE context of Access Network gateway record.

Step 93: the Access Network gateway sends to UE with this Access Network info response message.

Fig. 8, the method shown in 9 are that the Access Network gateway is through resolving the IP address that interactive messages is obtained ANDSF between UE and the ANDSF.

Referring to Figure 10; Write down the schematic flow sheet of the method three of ANDSF address for method embodiment two Wireless Communication Equipment of processing user equipment context of the present invention; Wireless Communication Equipment in this method is the Access Network gateway, and like P-GW, ASN-GW, PDG etc., this method comprises:

Step 101:UE sends Access Network information request message, the IP address of carrying the Access Network gateway of UE network of living in this Access Network information request message to ANDSF.

Step 102:ANDSF sends the Access Network info response message to UE, and Access Network information and switchover policy are sent to UE.

Step 103:ANDSF is according to the IP address of the Access Network gateway that carries in the Access Network information request message, sends login request message to the Access Network gateway, with the IP address registration of ANDSF in the Access Network gateway.Can carry the UE sign in this login request message, like permanent identification (IMSI, MSISDN, NAI etc.), the temporary mark (GUTI, TMSI, IP address etc.) of UE.The source IP address of this login request message IP packet can directly be used in the IP address of ANDSF, perhaps in message body, increases the IP address of independent cell record ANDSF.

Step 104: the Access Network gateway is resolved the IP address that this login request message IP packet obtains ANDSF; And according to the UE context in the definite Access Network gateway of UE sign that carries in the login request message, thereby the IP address of ANDSF is recorded in this UE context.

Step 105: the Access Network gateway sends registration reply message to ANDSF.This registration reply message is optional.

Method shown in Figure 10 be ANDSF initiatively to the Access Network gateway registration, make the Access Network gateway obtain the IP address of ANDSF.

Wireless Communication Equipment in Fig. 8,9, the method shown in 10 is the Access Network gateway; In the 3GPP network, ANDSF can also carry out alternately with MME/SGSN, as in the EPS network; ANDSF and MME are mutual; GSM EDGE Radio Access Network (GSM EDGE Radio Access Network, GERAN) or Universal Terrestrial Radio Access Network (Universal Terrestrial Radio Access Network, (the Packet Switched of packet-switched domain UTRAN); PS) in, ANDSF and SGSN are mutual.

Because MME/SGSN is the chain of command anchor point of UE in the 3GPP network, MME/SGSN can learn that the UE state changes the very first time when UE leaves net, and MME/SGSN also can initiatively initiate the operation of separates UE.From net or initiatively during separates UE, the deletion Indication message is sent to ANDSF in the IP address of the ANDSF through record to MME/SGSN at UE, and indication ANDSF deletes corresponding UE context.

Because ANDSF is deployed in the carrier network, so the IP address of ANDSF can be used as the part of subscription data, thereby can be pre-configured to be among the UE, also can be pre-configured to be among the HLR/HSS, can also directly be pre-configured to be among the MME/SGSN.Therefore, when UE was registered to the 3GPP network, MME/SGSN can adopt following mode to write down the IP address of ANDSF:

Mode one, UE send Attach Request message to MME/SGSN, carry the IP address of the ANDSF that is pre-configured to be among the UE in this Attach Request message; MME/SGSN is recorded in this IP address in the context of this UE.

After mode two, MME/SGSN receive the Attach Request message or location area updating request message of UE transmission; Obtain the subscription data of this UE to HLR/HSS; Carry the IP address of pre-configured ANDSF in this subscription data, this IP address is recorded in the context of UE.

After mode three, current MME/SGSN receive the Attach Request message or location area updating request message of UE transmission; To the IP address that the MME/SGSN of the previous registration of this UE obtains ANDSF pre-configured among the MME/SGSN of this previous registration; Like the MME/SGSN of previous registration the IP address of the ANDSF in the UE context of its record is sent to current MME/SGSN, current MME/SGSN is recorded in this IP address in the context of UE.

The IP address of mode four, the direct pre-configured ANDSF of current MME/SGSN; When UE is registered to this MME/SGSN first; As after receiving Attach Request message or location area updating request message, current MME/SGSN records the IP address of pre-configured ANDSF in the context of this UE.

In the present embodiment, Wireless Communication Equipment is sent the invalid contextual message of UE of indication deletion to ANDSF at once after perceiving the change of UE state, can make ANDSF that the UE state is changed to make rapidly and react, and makes ANDSF immediately delete invalid UE context.

One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be accomplished through the relevant hardware of program command; Aforesaid program can be stored in the computer read/write memory medium; This program the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.

Figure 11 is the structural representation of subscriber equipment embodiment of the present invention, and this embodiment comprises: receive information updating module 1101 and judge module 1102.Receive information updating module 1101 and be used to receive the Access Network information updating message that ANDSF sends, carry the UE sign in this Access Network information updating message; Judge module 1102 is used to judge whether the UE sign of reception is identical with the UE sign of record, and if not, indication ANDSF deletes the corresponding UE context of UE sign with said reception.

Wherein, The UE of record sign can be the UE sign that writes down in advance in the subscriber equipment equipment at this device place in the judge module 1102, like permanent identification (IMSI, the MSISDN of UE; NAI etc.), temporary mark (GUTI, TMSI, IP address etc.); Perhaps, the UE of this record sign can be that judge module 1102 receives the UE sign that ANDSF distributes for this UE, and notes this UE sign.

Simultaneously; Judge module 1102 identifies when identical at the UE sign of judging reception and the UE that writes down; Send indication to ANDSF and upgrade successful Access Network information updating response message, ANDSF receives after this indication renewal message of successful renewal, and it is recorded in the timestamp in the UE context.ANDSF confirms the time that the UE context does not upgrade according to timestamp, after the time that the UE context does not upgrade reaches a preset threshold value, deletes this UE context.

Present embodiment is through the customer equipment identification of relatively reception and the customer equipment identification of record; Can, the UE state delete invalid UE context by (when the customer equipment identification of reception and the customer equipment identification of record are inconsistent) indication ANDSF when changing; Make the timely disposal of refuse data of ANDSF, avoid the wrong problem of sending out of data.

Figure 12 is the structural representation of access network discovery of the present invention and selection functional entity embodiment, and this embodiment is deployed in the carrier network, is used to collect the network condition information of each access network, comprising: accepting state update module 1201 and removing module 1202.Accepting state update module 1201 is used to receive the deletion Indication message that carries the UE sign, and said deletion Indication message is that Wireless Communication Equipment is perceiving UE state change back transmission; Removing module 1202 is used for deletion and the corresponding UE context of said UE sign after receiving said deletion Indication message.

Under passive detection mode; ANDSF sends Access Network information updating message to UE, carries the UE sign in this message, and is inconsistent with the UE sign of self record if UE judges this UE that carries sign; Then send the deletion Indication message or abandon this Access Network information updating message to ANDSF; For abandoning situation, ANDSF can not receive the response message of UE, if ANDSF receives response message in a preset time Indication message is not deleted in self-generating.

Under active indication situation, Wireless Communication Equipment is initiatively sent the deletion Indication message to ANDSF after perceiving the change of UE state.

No matter ANDSF receives the deletion Indication message that UE sends, still receive the deletion Indication message that wireless device sends, still do not delete Indication message owing to receive the response message self-generating, all can be according to the corresponding UE context of deletion Indication message deletion.

Present embodiment can be deleted invalid UE context in time after the UE state changes, the quantity of the junk data that reduces to store among the ANDSF avoids the UE of ANDSF wrong to send data.

Figure 13 is the structural representation of Wireless Communication Equipment embodiment of the present invention; This embodiment can be deployed in the carrier network; Communicating by letter with ANDSF with UE is connected, and perceiving after the UE state changes, sends the deletion Indication message to ANDSF; Carry the UE sign in the said deletion Indication message, make ANDSF delete corresponding UE context according to this deletion Indication message.

This embodiment comprises: address module 1301 and sending module 1302; Address module 1301, the IP address that is used to write down said ANDSF; Sending module 1302 after being used to perceive the UE state and changing, sends said deletion Indication message according to said IP address to said ANDSF.

Concrete, Wireless Communication Equipment can be the Access Network gateway.Address module in the corresponding Access Network gateway is resolved the IP packet that UE sends to ANDSF, obtains the purpose IP address that this UE sends to the IP packet of ANDSF, this purpose IP address is recorded in the UE context of Access Network gateway preservation.Perhaps, the address module in the Access Network gateway is resolved the IP packet that ANDSF sends to UE, obtains the source IP address that this ANDSF sends to the IP packet of UE, this source IP address is recorded in the UE context of Access Network gateway preservation.Perhaps; UE and ANDSF are advanced, and line data is mutual, and UE carries the IP address of Access Network gateway in sending to the Access Network information request message of ANDSF, and ANDSF sends login request message according to the IP address of this Access Network gateway to the Access Network gateway; Address module in the Access Network gateway is resolved this login request message packet; Obtain source IP address, this source IP address is the IP address of ANDSF, this source IP address is recorded in the UE context of Access Network gateway preservation.

Perhaps, Wireless Communication Equipment is MME/SGSN.The part that the IP address of ANDSF can be used as subscription data is pre-configured to be among the UE, perhaps is pre-configured to be among the HLR/HSS, perhaps is pre-configured to be among the MME/SGSN.The following mode that can adopt corresponding M ME/SGSN writes down the IP address of ANDSF:

Mode one, be applicable to that the IP address of ANDSF is pre-configured to be among the UE.The address module of MME/SGSN receives the Attach Request message that UE sends, and the IP address of carrying pre-configured ANDSF in the said Attach Request message is recorded in this IP address in the context of this UE of its preservation.

Mode two, be applicable to that the IP address of ANDSF is pre-configured to be among the HLR/HSS.After the address module of MME/SGSN receives the Attach Request message or location area updating request message of UE transmission; Obtain the subscription data of said subscriber equipment to HLR/HSS; Carry the IP address of pre-configured ANDSF in the said subscription data, this IP address is recorded in the context of this UE of its preservation.

Mode three, the IP address that is applicable to ANDSF are pre-configured to be among the MME/SGSN of the previous registration of UE.After the address module of MME/SGSN receives the Attach Request message or location area updating request message of UE transmission; To the IP address that the MME/SGSN of the previous registration of said UE obtains ANDSF pre-configured among the MME/SGSN of said previous registration, this IP address is recorded in the context of this UE of its preservation.

Mode four, be applicable to that the IP address of ANDSF is pre-configured to be among the MME/SGSN of UE current register.After the address module of MME/SGSN receives the Attach Request message or location area updating request message that UE sends, the IP address of pre-configured ANDSF is recorded in the context of this UE of its preservation.

In the present embodiment; Wireless Communication Equipment perceives deletes the contextual message of invalid UE to ANDSF transmission indication ANDSF after the UE state changes; Make ANDSF can delete invalid UE context in time, avoid the junk data of storing excess among the ANDSF, avoid the UE of ANDSF wrong to send data.

What should explain at last is: above embodiment is only in order to technical scheme of the present invention to be described but not limit it; Although the present invention has been carried out detailed explanation with reference to preferred embodiment; Those of ordinary skill in the art is to be understood that: it still can make amendment or be equal to replacement technical scheme of the present invention, also can not make amended technical scheme break away from the spirit and the scope of technical scheme of the present invention and these are revised or be equal to replacement.

Claims

1. the method for a processing user equipment context is characterized in that, comprising:

2. the method for processing user equipment context according to claim 1 is characterized in that, also comprises:

Subscriber equipment receives Access Network information updating message, carries customer equipment identification in the said Access Network information updating message;

Subscriber equipment judges whether the customer equipment identification that receives is identical with the customer equipment identification of record, if not, sends the deletion Indication message or abandons said Access Network information updating message to said access network discovery and selection functional entity;

If said access network discovery and selection functional entity do not receive and said Access Network information updating message corresponding response, then Indication message is deleted in self-generating.

3. the method for processing user equipment context according to claim 2 is characterized in that, also comprises:

Access network discovery and selection functional entity receive the Access Network information request message, carry customer equipment identification in the said Access Network information request message;

Access network discovery is recorded in the customer equipment identification that carries in the corresponding customer equipment context with selection functional entity;

Access network discovery and selection functional entity are sent Access Network information updating message, carry the customer equipment identification that writes down in the said customer equipment context in the said Access Network information updating message.

4. the method for processing user equipment context according to claim 2 is characterized in that, also comprises:

Access network discovery and selection functional entity receive the Access Network information request message;

Access network discovery and selection functional entity are the user equipment allocation customer equipment identification, are recorded in the corresponding customer equipment context;

Access network discovery and selection functional entity are sent the Access Network info response message to said subscriber equipment, carry the customer equipment identification of distribution in the said Access Network info response message;

Subscriber equipment writes down the customer equipment identification of said distribution;

5. the method for processing user equipment context according to claim 2 is characterized in that:

If the customer equipment identification that receives is identical with the customer equipment identification of record, subscriber equipment sends the successful Access Network information updating response message of indication renewal to access network discovery and selection functional entity;

After access network discovery and selection functional entity receive said Access Network information updating response message, the timestamp of new record more;

Access network discovery and selection functional entity are confirmed the time that said customer equipment context does not upgrade according to said timestamp, after the said time reaches a preset threshold value, delete said customer equipment context.

6. the method for processing user equipment context according to claim 2 is characterized in that, also carries purpose IP address in the said Access Network information updating message, and this method also comprises:

Subscriber equipment judges that whether said purpose IP address is self IP address, if not, abandons said Access Network information updating message.

7. the method for processing user equipment context according to claim 2 is characterized in that, also comprises:

Subscriber equipment judges whether to discern said Access Network information updating message, if not, abandons said Access Network information updating message.

8. the method for processing user equipment context according to claim 1 is characterized in that, also comprises:

Wireless Communication Equipment is carried customer equipment identification perceiving status of user equipment change back to said access network discovery and selection functional entity transmission deletion Indication message in the said deletion Indication message;

Access network discovery and the selection functional entity deletion customer equipment context corresponding with said customer equipment identification.

9. the method for processing user equipment context according to claim 8 is characterized in that, said Wireless Communication Equipment is the Access Network gateway, and this method also comprises:

The IP address of Access Network gateway record access network discovery and selection functional entity;

The Access Network gateway sends said deletion Indication message according to said IP address to said access network discovery and selection functional entity after perceiving the status of user equipment change.

10. the method for processing user equipment context according to claim 9 is characterized in that, the IP address of said Access Network gateway record access network discovery and selection functional entity specifically comprises:

The Access Network gateway is resolved first packet that subscriber equipment sends to access network discovery and selection functional entity, and said purpose IP address is write down in the purpose IP address that obtains said first packet; Perhaps

Access Network gateway parsing access network discovery and selection functional entity send to second packet of subscriber equipment, obtain the source IP address of said second packet, write down said source IP address; Perhaps

Access network discovery and selection functional entity receive the Access Network information request message that subscriber equipment sends, and carry the IP address of the Access Network gateway of said subscriber equipment place network in the said Access Network information request message; Access network discovery and selection functional entity are sent the login request message packet according to the IP address of said Access Network gateway to said Access Network gateway, carry the IP address of access network discovery and selection functional entity in the said login request message packet; The Access Network gateway writes down the access network discovery that carries in the said login request message packet and the IP address of selection functional entity.

11. the method for processing user equipment context according to claim 8 is characterized in that, said Wireless Communication Equipment is mobile management entity or service universal grouping wireless business supporting node MME/SGSN, and this method also comprises:

The IP address of MME/SGSN record access network discovery and selection functional entity;

MME/SGSN sends said deletion Indication message according to said IP address to said access network discovery and selection functional entity after perceiving the status of user equipment change.

12. the method for processing user equipment context according to claim 11 is characterized in that, the IP address of said MME/SGSN record access network discovery and selection functional entity specifically comprises:

MME/SGSN receives the Attach Request message that subscriber equipment sends, and carries the IP address of pre-configured access network discovery and selection functional entity in the said Attach Request message, writes down said IP address; Perhaps

After MME/SGSN receives the Attach Request message or location area updating request message of subscriber equipment transmission; Obtain the subscription data of said subscriber equipment to attaching position register or home subscriber server; Carry the IP address of pre-configured access network discovery and selection functional entity in the said subscription data, write down said IP address; Perhaps

After MME/SGSN receives the Attach Request message or location area updating request message of subscriber equipment transmission; To the IP address that the MME/SGSN of the previous registration of said subscriber equipment obtains access network discovery pre-configured among the MME/SGSN of said previous registration and selection functional entity, write down said IP address; Perhaps

MME/SGSN writes down the pre-configured access network discovery corresponding with said subscriber equipment and the IP address of selection functional entity after receiving the Attach Request message or location area updating request message of subscriber equipment transmission.

13. a subscriber equipment is characterized in that, comprising:

14. subscriber equipment according to claim 13 is characterized in that: record customer equipment identification in the said judge module in advance, perhaps, said judge module receives and writes down the customer equipment identification of access network discovery and selection functional entity distribution.

15. subscriber equipment according to claim 13; It is characterized in that: said judge module is when the customer equipment identification of the customer equipment identification of judging reception and record is identical; Send the successful Access Network information updating response message of indication renewal to access network discovery and selection functional entity; Said Access Network information updating response message is used to upgrade the timestamp of said access network discovery and selection functional entity record; Said timestamp is used for the time that definite said customer equipment context does not upgrade, and after the said time of not upgrading reached a preset threshold value, access network discovery and selection functional entity were deleted said customer equipment context.

16. access network discovery and selection functional entity, the network condition information that is used to collect each access network is characterized in that, comprising:

17. access network discovery according to claim 16 and selection functional entity is characterized in that:

Said accepting state update module is used to receive subscriber equipment and changes the deletion Indication message that send the back at state; Perhaps

Said accepting state update module is used to receive Wireless Communication Equipment and is perceiving the deletion Indication message that sends after status of user equipment changes; Perhaps

Said accepting state update module is used for self-generating deletion Indication message after not receiving the response message of subscriber equipment.

18. a Wireless Communication Equipment is used to connect subscriber equipment and access network discovery and selection functional entity, it is characterized in that, comprising:

19. Wireless Communication Equipment according to claim 18 is characterized in that:

Said Wireless Communication Equipment is the Access Network gateway;

Said address module is resolved first packet that the terminal sends to access network discovery and selection functional entity, and said purpose IP address is write down in the purpose IP address that obtains said first packet; Perhaps

Said address module parsing access network discovery and selection functional entity send to second packet at terminal, obtain the source IP address of said second packet, write down said source IP address; Perhaps

Said address module receives the registration message packet of access network discovery and selection functional entity transmission, writes down the source IP address of said registration message packet.

20. Wireless Communication Equipment according to claim 18 is characterized in that:

Said Wireless Communication Equipment is mobile management entity or service universal grouping wireless business supporting node MME/SGSN;

The Attach Request message that said address module receiving terminal sends carries the IP address of pre-configured access network discovery and selection functional entity in the said Attach Request message, write down said IP address; Perhaps

After said address module receives the Attach Request message or location area updating request message that sends at the terminal; Obtain the subscription data at said terminal to attaching position register or home subscriber server; Carry the IP address of pre-configured access network discovery and selection functional entity in the said subscription data, write down said IP address; Perhaps

After said address module receives the Attach Request message or location area updating request message that sends at the terminal; To the IP address that the MME/SGSN of the previous registration in said terminal obtains access network discovery pre-configured among the MME/SGSN of said previous registration and selection functional entity, write down said IP address; Perhaps

Said address module writes down the access network discovery corresponding with said terminal pre-configured among the MME/SGSN of terminal current register and the IP address of selection functional entity after receiving the Attach Request message or location area updating request message that sends at the terminal.