CN101594607B

CN101594607B - Maintaining method, system and device of gateway information of packet data network

Info

Publication number: CN101594607B
Application number: CN2008101130384A
Authority: CN
Inventors: 吴问付
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-05-27
Filing date: 2008-05-27
Publication date: 2011-07-06
Anticipated expiration: 2028-05-27
Also published as: CN101594607A

Abstract

The invention discloses a maintaining method, a system and a device of the gateway information of a packet data network. The maintaining method comprises the following steps: a first network equipment receives information sent by user equipment or other network equipments; the first network equipment sends information which carries indication information to a home subscriber server after judging that information received by the first network equipment carries the initialization access indication information of the user equipment; and the indication information is used for indicating the home subscriber server to delete the stored gateway information of packet data network of the user equipment. The technical scheme ensures that the home subscriber server can delete the unnecessary stored gateway information of packet data network, so that the phenomenon that the unnecessary gateway information of packet data network has bad impact on subsequent processing procedures, such as switching and the like can be avoided; thus, the correctness of stored information in the home subscriber server can be improved.

Description

The maintaining method of gateway information of packet data network, system and equipment

Technical field

The present invention relates to the network communications technology field, be specifically related to the maintaining method of gateway information of packet data network, maintenance system, the network equipment and the subscriber equipment of gateway information of packet data network.

Background technology

In the subscriber equipment Attach (adhering to) of 3GPP network flow process, mobile management network element is after receiving attach request of user equipment, meeting and Home Subscriber Service (home subscriber server, HSS) executing location is upgraded and is inserted the subscription data flow process between, thus with the address registration of mobile management network element in HSS, HSS is inserted into the subscription data of UE in the mobile management network element simultaneously; Afterwards, mobile management network element is that subscriber equipment is selected PGW according to the default APN of subscription data, and default APN information, Packet Data Network GW (grouped data network gateway, PDN GW or PGW) identification information are sent to HSS; HSS preserves APN and the PGW identification information that this subscriber equipment uses.The PGW identification information of storing among the HSS can be used in the follow-up processes such as switching of this subscriber equipment.The PGW identification information here can be the address information of PGW, also can for the Fully Qualified Domain Name of PGW (fully qualified domain name, FQDN)

In the subscriber equipment Detach of 3GPP network (separation) flow process, mobile management network element is after receiving the detach request of subscriber equipment, and notice HSS deletes the PGW identification information of subscriber equipment.

In realizing process of the present invention, the inventor finds above-mentioned prior art, and there are the following problems at least:

At subscriber equipment because of power down or lose reason such as wireless network covering and cause subscriber equipment to fall under the situation of net unusually, subscriber equipment can not normally be initiated the Detach flow process, thus the PGW identification information that mobile management network element can not notify HSS to delete this subscriber equipment yet.Like this, after subscriber equipment is initiated the Attach flow process once more, can cause being among the HSS at least two PGW identification informations of this subscriber device stores.A plurality of PGW identification informations can cause this subscriber equipment to occur in follow-up processes such as switching unusually, for example, when subscriber equipment need be when the 3GPP network switches to the non-3GPP network, network element in the non-3GPP network need obtain the PGW identification information that subscriber equipment used before switching from HSS, if the network element in the non-3GPP network of this moment gets access to a plurality of PGW identification informations from HSS, then can cause the network element in the non-3GPP network can't carry out normal hand-off process.

Summary of the invention

Embodiment of the present invention provides a kind of maintaining method, system, the network equipment and subscriber equipment of gateway information of packet data network, can in time delete the gateway information of packet data network in the home subscriber server, improve the correctness of stored information in the home subscriber server.

The maintaining method of a kind of gateway information of packet data network that embodiment of the present invention provides comprises:

First network equipment receives the message of subscriber equipment or the transmission of other network equipments;

First network equipment carries subscriber equipment initialization access indication information in judging described message after, send the message that carries indication information to home subscriber server, described indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage;

Wherein, described first network equipment sends the message that carries indication information to home subscriber server and comprises carry subscriber equipment initialization access indication information in judging described message after:

Described first network equipment stores in judging home subscriber server and carries in the gateway information of packet data network of this subscriber equipment and the described message after the subscriber equipment initialization inserts indication information, sends the message that carries indication information to home subscriber server; Perhaps

Described first network equipment is not stored and is carried in the CAMEL-Subscription-Information of this subscriber equipment and the described message after the subscriber equipment initialization inserts indication information judging home subscriber server, sends the message that carries indication information to home subscriber server.

The network equipment that embodiment of the present invention provides comprises:

Receiver module is used to receive the message that subscriber equipment or other network equipments send;

Judge sending module, be used for carrying after initialization inserts indication information judging described message, send the message that carries indication information to home subscriber server, described indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage;

Described judgement sending module comprises:

Second judges submodule, is used for judging whether described message carries initialization and insert the CAMEL-Subscription-Information whether indication information and the described network equipment do not store this subscriber equipment;

Second sends submodule, is used for the judged result according to the second judgement submodule, sends the message of the gateway information of packet data network that carries the deletion subscriber equipment to home subscriber server.

The maintenance system of the gateway information of packet data network that embodiment of the present invention provides comprises:

First network equipment, be used to receive the message of subscriber equipment or the transmission of other network equipments, after in judging described message, carrying subscriber equipment initialization access indication information, send the message that carries indication information to home subscriber server, described indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage;

Home subscriber server is used for after judging the message that receives and carrying described indication information, the gateway information of packet data network of this subscriber equipment of storing in the deletion home subscriber server;

Described judgement sending module comprises:

Description by technique scheme as can be known, by first network equipment carrying of receiving that subscriber equipment or other network equipments send after the subscriber equipment initialization inserts the message of indication information, first network equipment indication home subscriber server is deleted the gateway information of packet data network (as the grouped data network gateway address information) of this subscriber equipment, make home subscriber server can in time delete the unnecessary gateway information of packet data network of its storage, thereby avoided unnecessary gateway information of packet data network that follow-up processing procedures such as switching are produced dysgenic phenomenon, improved the correctness of stored information in the home subscriber server.

Description of drawings

Fig. 1 is the maintaining method schematic flow sheet one of the PDN GW information of embodiment of the present invention;

Fig. 2 is the maintaining method schematic flow sheet two of the PDN GW information of embodiment of the present invention;

Fig. 3 is the maintaining method schematic flow sheet three of the PDN GW information of embodiment of the present invention;

Fig. 4 is the maintaining method schematic flow sheet four of the PDN GW information of embodiment of the present invention;

Fig. 5 is the maintaining method schematic flow sheet five of the PDN GW information of embodiment of the present invention;

Fig. 6 is the maintaining method schematic flow sheet six of the PDN GW information of embodiment of the present invention;

Fig. 7 is the network equipment schematic diagram of embodiment of the present invention;

Fig. 8 is the maintenance system schematic diagram of the PDN GW information of embodiment of the present invention;

Fig. 9 is the subscriber equipment schematic diagram of embodiment of the present invention.

Embodiment

Maintaining method below in conjunction with the gateway information of packet data network of 1 pair of embodiment of the present invention of accompanying drawing describes.

Among Fig. 1, steps A, the network equipment (first network equipment) receive message, and this message is resolved.This message can be the message that subscriber equipment sends, and also can be the message that message that other network equipment sends according to the subscriber equipment that receives sends.Other network equipments here are to be positioned at network side, non-first network equipment and with first network equipment network equipment of interacting message to be arranged.

If this message is owing to subscriber equipment is the message that initial access network sends, then can carry initialization in this message and insert indication information, be that initialization inserts with the indication subscriber equipment.It can be an in esse indication information in the message that the initialization here inserts indication information, also can be not carry certain information in the message, for example, when subscriber equipment when handoff procedure and initialization access procedure all need to send same predetermined message, can in the predetermined message of handoff procedure, carry indication message, in the predetermined message of initialization access procedure, do not carry indication message, when then there is not indication message in the network equipment in judging predetermined message, think that carrying initialization in the predetermined message inserts indication information.That is to say that the network equipment judges according to the information of carrying in the message that receives whether subscriber equipment is the initialization access network.The message of carrying initialization access indication information can be diversified, for example because present subscriber equipment can pass through the 3GPP network insertion, also can be by non-3GPP network insertion, therefore, pass through under the situation of 3GPP network insertion at subscriber equipment, subscriber equipment can carry initialization and insert indication information in Attach Request message, also can carry initialization and insert indication information in PDN connection request message; Pass through under the situation of non-3GPP (non-3GPP) network insertion at subscriber equipment, subscriber equipment can carry initialization and insert indication information in the message of authentication procedure, also can in PDN connection request message, carry initialization and insert indication information, can also in binding update messages, carry initialization and insert indication information.Embodiment of the present invention does not limit carries the concrete title that initialization inserts the message of indication information.

The network equipment in the embodiment of the present invention can be mobility management apparatus, for example Serving GPRS Support Node (Serving GPRS Support Node, SGSN) or Mobility Management Entity (mobile management network element, MME) etc.; The network equipment also can be access network element or authentication accounting server or authentication charging proxy or grouped data network gateway etc., and the concrete title of the network equipment can be along with the difference of the concrete deployment of real network and changed.Embodiment of the present invention does not limit the concrete title of this network equipment.

Step B, the network equipment parse in judgement and carry in the message that receives after the subscriber equipment initialization inserts indication information, then the network equipment sends the message that carries indication information to home subscriber server, and this indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of its storage.That is to say that it is the initialization access network that the network equipment is judged subscriber equipment according to the message that receives, then the network equipment sends the message that carries indication information to home subscriber server.Indication information in the embodiment of the present invention is promptly deleted the gateway information of packet data network of subscriber equipment.This indication information can be carried in the message in the mode of cell.The message that carries the gateway information of packet data network of deleting subscriber equipment that the network equipment sends to home subscriber server can be certain message that can be utilized in the existing procedure, that is to say, after the user equipment requests initialization inserts, the network equipment can carry out interacting message with home subscriber server, the network equipment can make full use of above-mentioned interactive messages, in the message that home subscriber server sends, carry the gateway information of packet data network of deletion subscriber equipment at certain, for example, the network equipment is upgrading location message, perhaps update packet data network connection request message, perhaps carry the gateway information of packet data network of deletion subscriber equipment in the message in the authentication procedure, and send.Certainly, the network equipment also can utilize the message that increases newly, be exclusively used in transmission deletion grouped data network gateway to send to home subscriber server the gateway information of packet data network of deletion subscriber equipment.Embodiment of the present invention does not limit the concrete title of the message that is used for the deleting load-bearing grouped data network gateway.

The network equipment can be after receiving the message that carries subscriber equipment initialization access indication information, the gateway information of packet data network that whether stores this subscriber equipment in the home subscriber server is not judged, and directly sent the message that carries the gateway information of packet data network of deleting subscriber equipment to home subscriber server.For example, the CAMEL-Subscription-Information of this subscriber equipment is obtained in network equipment utilization from home subscriber server flow process sends the message that carries the gateway information of packet data network of deleting subscriber equipment to home subscriber server, deletes the gateway information of packet data network of this subscriber equipment with the indication home subscriber server.

The network equipment also can carry after the subscriber equipment initialization inserts indication information receiving, the packet data gateway information that whether stores this subscriber equipment in the home subscriber server is judged, after in judging home subscriber server, storing the gateway information of packet data network of this subscriber equipment, send the message that carries the deletion grouped data network gateway to home subscriber server, delete the gateway information of packet data network of this subscriber equipment with the indication home subscriber server.

The network equipment judge the gateway information of packet data network that whether stores this subscriber equipment in the home subscriber server process can for: the network equipment judges whether it stores the CAMEL-Subscription-Information of this subscriber equipment, if store in the CAMEL-Subscription-Information of this subscriber equipment and this CAMEL-Subscription-Information and include gateway information of packet data network, then the network equipment determines to store in the home subscriber server gateway information of packet data network of this subscriber equipment, otherwise, think the gateway information of packet data network of not storing this subscriber equipment in the home subscriber server.

The network equipment judge the gateway information of packet data network that whether stores this subscriber equipment in the home subscriber server process can also for: the network equipment judges whether it stores the CAMEL-Subscription-Information of this subscriber equipment, if do not store the CAMEL-Subscription-Information of subscriber equipment in the network equipment, then the network equipment obtains the CAMEL-Subscription-Information of this subscriber equipment from home subscriber server; The network equipment judges in the CAMEL-Subscription-Information that obtains from home subscriber server whether include gateway information of packet data network, include gateway information of packet data network if judge, then the network equipment is determined the gateway information of packet data network that stores this subscriber equipment in the home subscriber server, otherwise the network equipment is thought the gateway information of packet data network of not storing this subscriber equipment in the home subscriber server.

Home subscriber server receives the message that the network equipment sends, and this message is resolved.Home subscriber server carries the gateway information of packet data network of deletion subscriber equipment in parsing this message after, according to the user equipment information that carries in the message gateway information of packet data network of this subscriber equipment of its storage is deleted processing, for example, home subscriber server is deleted the address information of grouped data network gateway of this subscriber equipment of its storage, again for example, home subscriber server is deleted the FQDN information of grouped data network gateway of this subscriber equipment of its storage.Store simultaneously in home subscriber server under the situation of the address information of grouped data network gateway of this subscriber equipment and FQDN information, home subscriber server need be deleted the address information and the FQDN information of grouped data network gateway of this subscriber equipment of its storage.Certainly, in the ownership place client server, also store under the situation of other related description information (as remarks etc.) of the grouped data network gateway of this subscriber equipment, also this related description information can be deleted in the lump.In addition, need to prove that it is to carry out that the deletion that above-mentioned home subscriber server is carried out is handled under it stores the situation of gateway information of packet data network of this subscriber equipment; Also has a kind of situation, it is the gateway information of packet data network that may not store this subscriber equipment in the home subscriber server, in this case, when home subscriber server is judged its gateway information of packet data network of not storing this subscriber equipment according to the user equipment information that carries in the message, do not carry out deletion action.

Be example, UE is described by the gateway information of packet data network maintaining method under the 3GPP network insertion situation with deletion PDN GW identification information below.

Steps A, UE are linked into the 3GPP network, and UE reports initialization to insert indication information to mobile management network element.

In steps A, UE can send to mobile management network element and carry the Attach Request message that Initial (initialization) inserts indication information, also can send to mobile management network element and carry the PDN connection request message that initialization inserts indication information.

After step B, mobile management network element receive the initialization access indication information of subscriber equipment, the PDN GW identification information of this subscriber equipment of storing among the indication HSS deletion HSS.

In step B, mobile management network element can adopt any mode in following five kinds of modes to indicate the PDN GW identification information of storing among the HSS deletion HSS:

Mode 1, mobile management network element are judged and are included PDN GW identification information in its subscription data that stores this UE and this subscription data, then mobile management network element sends Update Location message to HSS, carries the indication information of the PDN GW identification information of preserving among the indication HSS deletion HSS in this message.

Mode 2, mobile management network element are judged and are included PDN GW identification information in its subscription data that stores this UE and this subscription data, then mobile management network element sends the message that is exclusively used in the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS to HSS, for example, mobile management network element sends Clear UE PDN Connection Request (removing UE PDN connection request) to HSS.

Mode 3, mobile management network element are carried at the indication information of deleting PDN GW identification information in the renewal PDN connection request message when sending renewal PDN connection request message to HSS, and send to HSS.In mode 3, whether mobile management network element can be earlier includes PDN GW identification information to the subscription data of this UE of its storage is judged, after the subscription data of judging this UE includes PDN GW identification information, the indication information of deletion PDN GW identification information is carried in the renewal PDN connection request message, and sends to HSS; Whether mobile management network element can be not include the PDNGW identification information to the subscription data of this UE of its storage is yet judged, and the indication information that directly will delete PDN GW identification information is carried at and upgrades in the PDN connection request message, and sends to HSS.

Mode 4, mobile management network element are being judged the subscription data that it does not store this UE, then mobile management network element sends Update Location (position renewal) message to HSS, to obtain the subscription data of this UE from HSS, mobile management network element carries indication information in Update Location message.

Mode 5, mobile management network element is being judged the subscription data that it does not store this UE, then mobile management network element sends Update Location message to HSS, to obtain the subscription data of this UE from HSS, after mobile management network element gets access to the subscription data of this UE from HSS, judge and whether include PDN GW identification information in this subscription data, if include PDN GW identification information in the subscription data of this UE, then mobile management network element sends the message that is exclusively used in the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS to HSS, for example, mobile management network element sends Clear UE PDNConnection Request (removing UE PDN connection request) to HSS.

In addition, if also there is the process that is used to authenticate in the 3GPP network, then mobile management network element also can send the message that carries indication information to HSS in verification process.

Be example, UE is described by the gateway information of packet data network maintaining method under the non-3GPP network insertion situation with deletion PDN GW identification information below.

Step a, UE are linked into the non-3GPP network, and UE inserts indication information to the initialization of network side reported by network elements.

In step a, the network side network element can be the access network element in the Non-3GPP network, also can be AAA Server, also can be AAA Proxy, can also be PDN GW.UE can be following three kinds of modes to the process that the initialization of network side reported by network elements inserts indication information:

Mode (a), UE insert initialization in the message that indication information is carried at verification process, and send this message to the access network element of Non-3GPP network or AAA Server or AAA Proxy, be that initialization inserts with the access of indication access network element or AAA Server or this UE of AAA Proxy.

Mode (b), UE insert indication information with initialization and are carried in the PDN connection request message, and send this PDN connection request message to the access network element of Non-3GPP network, the access network element of Non-3GPP network is after receiving PDN connection request message, sending the agent binding update messages that carries initialization access indication to PDN GW, is that initialization inserts with the access of indicating this UE of PDN GW.

Mode (c), UE insert indication information with initialization and are carried in the binding update messages, and send this binding update messages to PDN GW, are that initialization inserts with the access of indicating this UE of PDN GW.

The access network element of step b, Non-3GPP network or AAA Server or AAA Proxy or PDN GW are after the initialization that receives subscriber equipment inserts indication information, and indication HSS deletes the PDN GW identification information of this subscriber equipment of storing among the HSS.

In step b, can adopt any mode in following five kinds of modes to indicate the PDN GW identification information of storing among the HSS deletion HSS:

Mode 1., the access network element of Non-3GPP network or AAA Server or AAA Proxy judge and include PDN GW identification information in its subscription data that stores this UE and this subscription data, then access network element or AAA Server or AAA Proxy carry the indication information of the PDN GW identification information of preserving among the indication HSS deletion HSS in the message of the identifying procedure of UE, and send this message to HSS.

Mode 2., the access network element of Non-3GPP network, perhaps AAA Server, perhaps AAA Proxy judges its subscription data that stores this UE, and include PDN GW identification information in this subscription data, access network element then, perhaps AAA Server, perhaps AAA Proxy sends the message that is exclusively used in the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS to HSS, for example, access network element, perhaps AAA Server, perhaps AAA Proxy sends Clear UE PDN ConnectionRequest (removing UE PDN connection request) message to HSS.

Mode 3., PDN GW when send upgrading PDN connection request message to HSS, the indication information of deletion PDN GW identification information is carried at upgrades in the PDN connection request message, and send to HSS.Mode 3. in, whether PDN GW can be earlier includes PDN GW identification information to the subscription data of this UE of its storage is judged, after the subscription data of judging this UE includes PDN GW identification information, the indication information of deletion PDN GW identification information is carried in the renewal PDN connection request message, and sends to HSS; Whether PDN GW can be not include PDN GW identification information to the subscription data of this UE of its storage is yet judged, and the indication information that directly will delete PDN GW identification information is carried at and upgrades in the PDN connection request message, and sends to HSS.

Mode 4., the access network element of Non-3GPP network or AAA Server or AAA Proxy judging the subscription data that it does not store this UE, and then the access network element of Non-3GPP network or AAA Server or AAA Proxy need ask the subscription data of this UE to HSS in the identifying procedure of this UE; In the identifying procedure of this UE, the indication information that the access network element of Non-3GPP network or AAA Server or AAA Proxy will delete PDN GW identification information is carried in the message of identifying procedure and is sent to HSS.

Mode 5., the access network element of Non-3GPP network, perhaps AAA Server, perhaps AAA Proxy is judging the subscription data that it does not store this UE, the access network element of Non-3GPP network then, perhaps AAA Server, perhaps AAA Proxy in the identifying procedure of this UE to the subscription data of this UE of HSS acquisition request, the access network element of Non-3GPP network, perhaps AAAServer, after perhaps AAA Proxy gets access to the subscription data of this UE from HSS, judge and whether include the PDNGW identification information in this subscription data, if include PDN GW identification information in the subscription data of this UE, the access network element of Non-3GPP network then, perhaps AAA Server, perhaps AAA Proxy sends the message that is exclusively used in the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS to HSS, for example, the access network element of Non-3GPP network, perhaps AAA Server, perhaps AAA Proxy sends Clear UE PDN Connection Request (removing UE PDN connection request) to HSS.

Below still with PDN GW identification information be example, the maintaining method to the gateway information of packet data network of embodiment of the present invention describes in conjunction with the accompanying drawings.

By under the situation of 3GPP network insertion, the maintaining method of gateway information of packet data network as shown in Figure 2 at UE.

For the GERAN/UTRAN network, the mobile management network element among Fig. 2 can be SGSN; For the E-UTRAN network, the mobile management network element among Fig. 2 can be MME.

Among Fig. 2, step 1, UE insert indication information with initialization and are carried in Attach Request (the adhering to request) message, and for example, UE is carried at " Initial Indicator (initialization indication) " in the Attach Request message; Again for example, the UE value of carrying " Attach Type (type of attachment) " cell and this cell of UE in Attach Request message is set to " Initial Attach (initialization is adhered to) "; Also have, if insert (switching to the 3GPP network from the non-3GPP network) as UE for switching, UE carries " Attach Type " cell and this cell of UE in Attach Request message value is set to " Handover Attach (switching is adhered to) ", then when initialization inserts, UE can not carry " Attach Type " cell in Attach Request message, send owing to initialization inserts to represent this message.UE sends Attach Request message to mobile management network element, is that initialization inserts with the access of this UE of indication network side.

In step 1, UE can be former thereby send Attach Request message to mobile management network element when being linked into the 3GPP network owing to falling net etc. unusually, and UE also can send AttachRequest message to mobile management network element when initially being linked into the 3GPP network.

Carry out authorizing procedure between step 2, UE, mobile management network element, the HSS three.

Step 3, mobile management network element judges whether himself stores the subscription data of this UE, if mobile management network element is judged the subscription data that himself stores this UE, then mobile management network element judges in the subscription data of this UE whether include PDN GW identification information, in judging the subscription data of this UE, include PDN GW identification information, and the access that the AttachRequest message table that this UE sends illustrates this UE is that initialization inserts, then mobile management network element sends the message that carries deletion PDNGW identification information to HSS, with the PDN GW identification information of storing among the indication HSS deletion HSS.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Mobile management network element to HSS send carry deletion PDN GW identification information message can for: mobile management network element sends the Update Location message that carries deletion PDN GW identification information to HSS.Deletion the carry mode of PDN GW identification information in Update Location message can for: in Update Location message, carry " ClearIndicator " indicating bit information; Carry mode also can for: the value of carrying " Update Type " cell and this network element in Update Location message is set to " Initial (initialization) ".

Mobile management network element to HSS send carry deletion PDN GW identification information message also can for: mobile management network element sends the message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS, this message such as Clear UE PDNConnection Request (removing UE PDN connection request) message.

In step 3, if it is that initialization inserts that mobile management network element is judged the access of the subscription data that himself do not store this UE and this UE, then mobile management network element can carry deletion PDN GW identification information in Update Location message, and sends Update Location message to HSS.

In addition, in step 3, if it is that initialization inserts that mobile management network element is judged the access of the subscription data that himself do not store this UE and this UE, then mobile management network element can send the Update Location message of not carrying deletion PDN GW identification information to HSS, HSS returns the subscription data of this UE to mobile management network element after receiving this message.After this, mobile management network element judges in the subscription data of this UE whether comprise PDN GW identification information again, if comprise the access of PDN GW identification information and this UE in the subscription data of this UE is that initialization inserts, then mobile management network element sends the message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS, this message such as Clear UE PDN Connection Request (removing UE PDN connection request) message.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Step 4, mobile management network element are selected PGW (being PDN GW) according to the default APN that UE uses as UE, and (service gateway entity SGW) sends establishment default bearer request message, connects to create default PDN to ServingGateway.

Step 5, SGW send to the PGW of above-mentioned selection and create the default bearer request message or send agent binding update messages.For example, when the interface protocol between SGW and PGW was GPRS Tunneling Protocol (GPRS Tunnel Protocol, GTP agreement), then SGW sent to the PGW that selects and creates the default bearer request message; Again for example, the interface protocol between SGW and PGW is that (proxy mobile internet protocol, in the time of PMIP), then SGW sends agent binding update messages to the PGW that selects to Proxy Mobile Internet Protocol.

Step 6, PGW return establishment default bearer response message to SGW after receiving establishment default bearer request message, PGW returns proxy binding acknowledgment messages to SGW after receiving agent binding update messages.

Step 7, SGW return to mobile management network element and create the default bearer response message.

Step 8, mobile management network element return to adhere to UE accepts message.

Step 9, mobile management network element send to HSS and upgrade PDN connection request message, with the default PGW identification information of registration in HSS, carry the APN and the PGW identification information of the default PDN connection of UE use in the message.

In addition, need to prove, if mobile management network element does not send the message that carries deletion PDN GW identification information to HSS in step 3, then mobile management network element can be carried at deletion PDN GW identification information in the renewal PDN connection request message in the step 9, be sent to HSS, delete the PDN GW identification information of this UE of its preservation with indication HSS.In this step, whether mobile management network element can be earlier includes PDN GW identification information to the subscription data of this UE of its storage is judged, after the subscription data of judging this UE includes PDN GW identification information, the indication information of deletion PDN GW identification information is carried in the renewal PDN connection request message, and sends to HSS; Whether mobile management network element can be not include PDN GW identification information to the subscription data of this UE of its storage is yet judged, and the indication information that directly will delete PDN GW identification information is carried at and upgrades in the PDN connection request message, and sends to HSS.

Deletion PDN GW identification information be carried at the mode upgraded in the PDN connection request message can for: in upgrading PDN connection request message, carry " Clear Indicator " indicating bit information; Also can for: the value of carrying " Update Type " cell and this cell of mobile management network element in upgrading PDN connection request message is set to " Initial (initialization) ".

Step 10, HSS receive and upgrade PDN connection request message, if HSS judges and carries deletion PDN GW identification information in this message, then HSS deletes the PDN GW identification information that himself is stored, and, HSS preserves and upgrades APN and the PGW identification information that carries in the PDN connection request message after deletion PDN GW identification information; If HSS judges and do not carry deletion PDN GW identification information in this message, then HSS directly preserves and upgrades APN and the PGW identification information that carries in the PDN connection request message.HSS returns renewal PDN connection response message to mobile management network element after preserving APN and PGW identification information.

By under the situation of 3GPP network insertion, the maintaining method of gateway information of packet data network as shown in Figure 3 at UE.

For the GERAN/UTRAN network, the mobile management network element among Fig. 3 can be SGSN; For the E-UTRAN network, the mobile management network element among Fig. 3 can be MME.

Among Fig. 3, step 1, UE are linked into the 3GPP network.UE inserts indication information with initialization and is carried in the PDN connection request message, and for example, UE is carried at " Initial Indicator (initialization indication) " in the PDN connection request message; Again for example, the UE value of carrying " Request Type (request type) " cell and this cell of UE in PDN connection request message is set to " Initial Request (initialization request) "; Also have, if insert (switching to the 3GPP network from the non-3GPP network) as UE for switching, UE carries " Request Type (request type) " in PDN connection request message and the value of this cell of UE is set to " Handover Request (handoff request) ", then when initialization inserts, UE can not carry " Request Type " cell in PDN connection request message, send owing to initialization inserts to represent this message.UE sends PDN connection request message to mobile management network element, is that initialization inserts with the access of this UE of indication network side.

In step 1, UE can be former thereby send PDN connection request message to mobile management network element when being linked into the 3GPP network owing to falling net etc. unusually, and UE also can send PDN connection request message to mobile management network element when initially being linked into the 3GPP network.

Step 2, mobile management network element judge in the subscription data of this UE whether include PDN GW identification information, including the access that PDN connection request message table that PDN GW identification information and this UE send illustrates this UE in judging the subscription data of this UE is that initialization inserts, then mobile management network element sends the message that carries deletion PDN GW identification information to HSS, with the PDN GW identification information of storing among the indication HSS deletion HSS.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Mobile management network element to HSS send carry deletion PDN GW identification information message can for: mobile management network element sends the Update Location message that carries deletion PDN GW identification information to HSS.Deletion the carry mode of PDN GW identification information in Update Location message can for: in Update Location message, carry " ClearIndicator " indicating bit information; Carry mode also can for: the value of carrying " Update Type " cell and this network element in Update Location message is set to " Initial ".

Mobile management network element to HSS send carry deletion PDN GW identification information message also can for: mobile management network element sends message, this message such as the Clear UE PDNConnection Request message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS.

Step 3, HSS delete the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.In addition, if the message that HSS receives is Clear UE PDN Connection Request message, then HSS also needs to return Clear UE PDN Connection Response message to mobile management network element.

The APN information of carrying in step 4, the message of mobile management network element according to the UE transmission is that this UE selects PGW, and sends establishment default bearer request message to SGW, connects to create default PDN.

Step 5, SGW send establishment default bearer request message or send agent binding update messages to the PGW of above-mentioned selection after receiving the next message of mobile management network element transmission.For example, when the interface protocol between SGW and PGW was the GTP agreement, then SGW sent to the PGW that selects and creates the default bearer request message; Again for example, when the interface protocol between SGW and PGW was PMIP, then SGW sent agent binding update messages to the PGW that selects.

Step 8, mobile management network element are initiated the radio bearer creation facilities program (CFP), to set up the carrying that wireless network uses.

Step 9, mobile management network element send to HSS and upgrade PDN connection request message, with registration PGW identification information in HSS, carry the APN and the PGW identification information of the PDN connection of UE use in the message.

In addition, need to prove, if mobile management network element does not send the message that carries deletion PDN GW identification information to HSS in step 2, then mobile management network element can be carried at deletion PDN GW identification information in the renewal PDN connection request message in the step 9, be sent to HSS, delete the PDN GW identification information of this UE of its preservation with indication HSS.In this step, whether mobile management network element can be earlier includes PDN GW identification information to the subscription data of this UE of its storage is judged, after the subscription data of judging this UE includes PDN GW identification information, the indication information of deletion PDN GW identification information is carried in the renewal PDN connection request message, and sends to HSS; Whether mobile management network element can be not include PDN GW identification information to the subscription data of this UE of its storage is yet judged, and the indication information that directly will delete PDN GW identification information is carried at and upgrades in the PDN connection request message, and sends to HSS.

Deletion PDN GW identification information be carried at the mode upgraded in the PDN connection request message can for: in upgrading PDN connection request message, carry " Clear Indicator " indicating bit information; Also can for: the value of carrying " Update Type " cell and this cell of mobile management network element in upgrading PDN connection request message is set to " Initial ".

By under the situation of non-3GPP network insertion, the maintaining method of gateway information of packet data network as shown in Figure 4 at UE.

Among Fig. 4, step 1, UE are linked into the non-3GPP network, carry out authentication procedure between UE, Non-3GPP network insertion network element, AAA Proxy (the authentication charging proxy is in just existence under the roaming scence at UE), AAA Server (authentication accounting server) and the HSS.

For wlan system, the Non-3GPP network insertion network element in the step 1 can for: Evolved Packet DataGateway (the evolution packet data gateway, EPDG); For Worldwide Interoperability for MicrowaveAccess (micro-wave access global inter communication, WiMAX) system, Non-3GPP network insertion network element in the step 1 can be Access Service Network Gateway (access business network gateway, ASN GW); For Code Division MultipleAccess (code division multiple access inserts, CDMA) system, the Non-3GPP network insertion network element in the step 1 can for: AccessGateway (IAD, AGW); For High Rate Packet Data (HRPD (high rate packet data), HRPD) network, the Non-3GPP network insertion network element in the step 1 can for: HRPD Serving Gateway (the high-speed packet data service gateway, HSGW).

In step 1, UE can insert initialization in the message that indication information is carried at verification process, and for example, UE is carried at " Initial Indicator (initialization indication) " in the message of verification process; Again for example, the UE value of carrying " Attach Type (type of attachment) " cell and this cell of UE in the message of verification process is set to " Initial Attach "; Also have, if insert (switching to the non-3GPP network from the 3GPP network) as UE for switching, UE carries " Attach Type " cell and this cell of UE in the message of verification process value is set to " Handover Attach (switching is adhered to) ", then when initialization inserts, UE can not carry " Attach Type " cell in the message of verification process, send owing to initialization inserts to represent this message.

In step 1, UE can be former thereby send the message of verification process when being linked into the Non-3GPP network to Non-3GPP network insertion network element owing to falling net etc. unusually, and UE also can send the message of verification process to Non-3GPP network insertion network element when initially being linked into the Non-3GPP network.

In step 1, Non-3GPP network insertion network element and AAA Server and AAA Proxy carry out user's authentication alternately, by this process, Non-3GPP network insertion network element can send to AAA Server and AAA Proxy with the authentication message that carries initialization access indication information.Non-3GPP network insertion network element or AAA Server or AAA Proxy can judge whether himself stores the subscription data of this UE, if Non-3GPP network insertion network element or AAA Server or AAAProxy judge the subscription data that himself stores this UE, then Non-3GPP network insertion network element or AAA Server or AAA Proxy judge in the subscription data of this UE whether include PDN GW identification information, in judging the subscription data of this UE, include PDN GW identification information, and carry the subscriber equipment initialization in the PDN connection request message that this UE sends and insert indication information, then Non-3GPP network insertion network element or AAA Server or AAA Proxy can send the message that carries deletion PDN GW identification information to HSS, with the PDN GW identification information of storing among the indication HSS deletion HSS.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Non-3GPP network insertion network element or AAA Server or AAA Proxy to HSS send carry deletion PDN GW identification information message can for: Non-3GPP network insertion network element or AAA Server or AAA Proxy send message in the authentication procedure that carries deletion PDN GW identification information to HSS.The mode of carrying in the deletion message of PDN GW identification information in authentication procedure can for: carry " Clear Indicator " indicating bit information in the message in authentication procedure; Carry mode also can for: the value of carrying " Update Type " cell and this network element in the message in authentication procedure is set to " Initial ".

Non-3GPP network insertion network element or AAA Server or AAA Proxy to HSS send carry deletion PDN GW identification information message also can for: Non-3GPP network insertion network element or AAA Server or AAA Proxy send the message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS.

In step 1, if it is that initialization inserts that Non-3GPP network insertion network element or AAA Server or AAA Proxy judge the access of the subscription data that himself do not store this UE and this UE, then Non-3GPP network insertion network element or AAAServer or AAA Proxy can carry deletion PDN GW identification information in the message in authentication procedure, and the message in HSS transmission authentication procedure.

In addition, in step 1, if it is that initialization inserts that Non-3GPP network insertion network element or AAA Server or AAA Proxy judge the access of the subscription data that himself do not store this UE and this UE, then Non-3GPP network insertion network element or AAA Server or AAA Proxy can send the message of not carrying in the authentication procedure of deleting PDN GW identification information to HSS, HSS returns the subscription data of this UE to Non-3GPP network insertion network element or AAA Server or AAA Proxy after receiving this message.After this, Non-3GPP network insertion network element or AAA Server or AAA Proxy judge in the subscription data of this UE whether comprise PDN GW identification information again, if comprise the access of PDN GW identification information and this UE in the subscription data of this UE is that initialization inserts, then Non-3GPP network insertion network element or AAA Server or AAA Proxy send message, this message such as the Clear UE PDN Connection Request message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Step 2, Non-3GPP network insertion network element send agent binding update messages to the PGW that selects for UE.Non-3GPP network insertion network element can carry indication information in agent binding update messages, be that initialization inserts with the access of indicating this UE.This indication information can be carried in the agent binding update messages in the following way:

Mode 1), Non-3GPP network insertion network element is carried at the indication information of " Initial Indicator (initialization indication) " in the agent binding update messages.

Mode 2), Non-3GPP network insertion network element is carried at " Update Type (updating type) " cell in the agent binding update messages, and the value of this cell of Non-3GPP network insertion network element is set to: " Initial Update (initialization renewal) ".

Mode 3), insert from the switching that the non-3GPP network switches to the 3GPP network for UE, if Non-3GPP network insertion network element is carried at " Update Type (updating type) " cell in the agent binding update messages, and the value of this cell of Non-3GPP network insertion network element is set to " Handover Update (switch and upgrade) ", so, in UE initialization access procedure, Non-3GPP network insertion network element can not carry " Update Type " cell in agent binding update messages.PGW thinks that then the access of this UE is that initialization inserts after not receiving the agent binding update messages that carries " Update Type " cell.

Step 3, PGW send renewal PDN connection request message to HSS after receiving agent binding update messages.

In step 3, if it is the message that initialization inserts and other network elements carry deletion PDN GW identification information to the HSS transmission in step 1 that PGW judges the access of UE, then PGW can be carried at deletion PDN GW identification information and upgrade PDN connection request message, and sends renewal PDN connection request message to HSS.

Deletion PDN GW identification information be carried at the mode upgraded in the PDN connection request message can for: in upgrading PDN connection request message, carry " Clear Indicator " indicating bit information; Also can for: the value of carrying " Update Type " cell and this cell in upgrading PDN connection request message is set to " Initial (initialization) ".

Step 4, HSS receive upgrades PDN connection request message, HSS carries the indication information of deletion PDN GW identification information in judging this message after, with the PDN GW identification information deletion of this UE of its storage.Then, HSS obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, and afterwards, HSS returns to PGW and upgrades the PDN connection response message.Need to prove, in upgrading PDN connection request message, do not carry under the situation of the indication information of deleting PDN GW identification information, HSS directly obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, afterwards, HSS returns to PGW and upgrades the PDN connection response message.

Step 5, PGW return proxy binding acknowledgment messages to Non-3GPP network insertion network element.

By under the situation of non-3GPP network insertion, the maintaining method of gateway information of packet data network as shown in Figure 5 at UE.

Among Fig. 5, step 1, UE are linked into the non-3GPP network.UE inserts indication information with initialization and is carried in the PDN connection request message, and for example, UE is carried at " Initial Indicator (initialization indication) " in the PDN connection request message; Again for example, the UE value of carrying " Request Type (request type) " cell and this cell of UE in PDN connection request message is set to " Initial Request (initialization request) "; Also have, if insert (switching to the 3GPP network from the non-3GPP network) as UE for switching, UE carries " Request Type (request type) " in PDN connection request message and the value of this cell of UE is set to " Handover Request (handoff request) ", then when initialization inserts, UE can not carry " Request Type " cell in PDN connection request message, send owing to initialization inserts to represent this message.UE sends PDN connection request message to mobile management network element, is that initialization inserts with the access of this UE of indication network side.

In step 1, UE can be former thereby send PDN connection request message to mobile management network element when being linked into the non-3GPP network owing to falling net etc. unusually, and UE also can send PDN connection request message to mobile management network element when initially being linked into the non-3GPP network.

Step 2, Non-3GPP network insertion network element judges whether himself stores the subscription data of this UE, if Non-3GPP network insertion network element is judged the subscription data that himself stores this UE, then Non-3GPP network insertion network element judges in the subscription data of this UE whether include PDN GW identification information, in judging the subscription data of this UE, include PDN GW identification information, and the access that the PDN connection request message table that this UE sends illustrates this UE is that initialization inserts, then Non-3GPP network insertion network element sends the message that carries deletion PDN GW identification information to HSS, with the PDN GW identification information of storing among the indication HSS deletion HSS.HSS deletes the PDN GW identification information of this UE of its storage after receiving the message that carries deletion PDN GW identification information.

Non-3GPP network insertion network element to HSS send carry deletion PDN GW identification information message can for: mobile management network element sends message, this message such as the Clear UE PDNConnection Request message that deletion PDN GW identification information is carried in specific being exclusively used in to HSS.

Step 3, Non-3GPP network insertion network element send agent binding update messages to the PGW that selects for UE.Non-3GPP network insertion network element can carry indication information in agent binding update messages, be that initialization inserts with the access of indicating this UE.This indication information is carried at situation in the agent binding update messages such as the description in the above-mentioned execution mode.

Step 4, PGW send renewal PDN connection request message to HSS after receiving agent binding update messages.

In step 4, if it is initialization inserted and carried to the HSS transmission deletion PDN GW identification information in step 2 message that PGW judges the access of UE, then PGW can be carried at deletion PDN GW identification information and upgrade PDN connection request message, and sends renewal PDN connection request message to HSS.

Deletion PDN GW identification information be carried at the mode upgraded in the PDN connection request message can for: in upgrading PDN connection request message, carry " Clear Indicator " indicating bit information; Also can for: the value of carrying " Update Type " cell and this cell in upgrading PDN connection request message is set to " Initial ".

Step 5, HSS receive upgrades PDN connection request message, HSS carries the indication information of deletion PDN GW identification information in judging this message after, with the PDN GW identification information deletion of this UE of its storage.Then, HSS obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, and afterwards, HSS returns to PGW and upgrades the PDN connection response message.Need to prove, in upgrading PDN connection request message, do not carry under the situation of the indication information of deleting PDN GW identification information, HSS directly obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, afterwards, HSS returns to PGW and upgrades the PDN connection response message.

Step 6, PGW return proxy binding acknowledgment messages to Non-3GPP network insertion network element.

By under the situation of non-3GPP network insertion, the maintaining method of gateway information of packet data network as shown in Figure 6 at UE.

Among Fig. 6, step 1, UE are linked into the non-3GPP network.UE inserts indication information with initialization and is carried in the binding update messages, and for example, UE is carried at " Initial Indicator (initialization indication) " in the binding update messages; Again for example, the UE value of carrying " Update Type (updating type) " cell and this cell of UE in binding update messages is set to " Initial Update (initialization renewal) "; Also have, if insert (switching to the 3GPP network from the non-3GPP network) as UE for switching, UE carries " Update Type " in binding update messages and the value of this cell of UE is set to " HandoverUpdate (switch and upgrade) ", then when initialization inserts, UE can not carry " Update Type " cell in binding update messages, send owing to initialization inserts to represent this message.UE sends binding update messages to PGW, is that initialization inserts with the access of this UE of indication network side.

Step 2, PGW receive binding update messages, and PGW is after initialization inserts in the access of judging UE, the indication information of deleting the PGW identification information is carried at upgrades in the PDN connection request message, and send this renewal PDN connection request message to HSS.The indication information of deletion PGW identification information in upgrading PDN connection request message the mode of carrying such as the description in the above-mentioned method execution mode.

Step 3, HSS receive upgrades PDN connection request message, HSS carries the indication information of deletion PDN GW identification information in judging this message after, with the PDN GW identification information deletion of this UE of its storage.Then, HSS obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, and afterwards, HSS returns to PGW and upgrades the PDN connection response message.Need to prove, in upgrading PDN connection request message, do not carry under the situation of the indication information of deleting PDN GW identification information, HSS directly obtains APN and PGW identification information from the information that renewal PDN connection request message is carried, and storage, afterwards, HSS returns to PGW and upgrades the PDN connection response message.

Step 4, PGW return binding acknowledgement message to UE.

Description by the respective embodiments described above as can be known, embodiment of the present invention provides multiple PGW information maintenance method, each method all can be fallen net unusually at UE and wait and cause under the situation that the PGW information of preserving among the HSS goes wrong, the PGW information of storing among the HSS is in time safeguarded, make the correct PGW information of storage among the HSS, thereby avoided unnecessary PGW information that follow-up processing procedures such as switching are produced dysgenic phenomenon, improved the correctness of stored information in the home subscriber server.

Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better execution mode under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.

The network equipment that embodiment of the present invention is provided describes below.

The network equipment in the embodiment of the present invention (i.e. first network equipment) can be mobility management apparatus, for example SGSN or MME etc.; The network equipment also can be access network element or authentication accounting server or authentication charging proxy or grouped data network gateway etc., and the concrete title of the network equipment can be along with the difference of the concrete deployment of real network and changed.Embodiment of the present invention does not limit the concrete title of this network equipment.

The network equipment that embodiment of the present invention provides as shown in Figure 7.

The network equipment among Fig. 7 comprises: receiver module 600 and judgement sending module 610.

Receiver module 600 receives message.This message can be the message that subscriber equipment sends, and also can be the message that message that other network equipment sends according to the subscriber equipment that receives sends.Description in the implication of other network equipments such as the above-mentioned execution mode.If this message is owing to subscriber equipment is the message that initial access network sends, then can carry initialization in this message and insert indication information, be that initialization inserts with the indication subscriber equipment.It can be an in esse indication information in the message that the initialization here inserts indication information, also can be certain information of not carrying in the message, but concrete reference method embodiment is described.The message that carries initialization access indication information that receiver module 600 receives can be diversified, for example because present subscriber equipment can pass through the 3GPP network insertion, also can be by non-3GPP network insertion, therefore, pass through under the situation of 3GPP network insertion at subscriber equipment, receiver module 600 can receive and carry the Attach Request message that initialization inserts indication information, also can receive to carry the PDN connection request message that initialization inserts indication information; Pass through under the situation of non-3GPP network insertion at subscriber equipment, receiver module 600 can receive the message in the authentication procedure that carries initialization access indication information, also can receive and carry the PDN connection request message that initialization inserts indication information, can also receive and carry the binding update messages that initialization inserts indication information.Embodiment of the present invention does not limit the concrete title that initialization inserts the message of indication information that carries that receiver module 600 receives.

After judging that sending module 610 carries initialization access indication information in judging described message, send the message that carries indication information to home subscriber server, this indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage.The indication information is here promptly deleted the gateway information of packet data network of subscriber equipment.Judge whether the process that whether carries initialization access indication information in 610 pairs of message of sending module is the deterministic process of initialization access network to subscriber equipment promptly also.Concrete description as above-mentioned execution mode.

The message that carries the gateway information of packet data network of deleting subscriber equipment that judgement sending module 610 sends to home subscriber server can be certain message that can be utilized in the existing procedure, that is to say, after the user equipment requests initialization inserts, the network equipment can carry out interacting message with home subscriber server, judge that sending module 610 can make full use of above-mentioned interactive messages, in the message that home subscriber server sends, carry the gateway information of packet data network of deletion subscriber equipment at certain, for example, judge that sending module 610 is upgrading location message, perhaps update packet data network connection request message, perhaps carry the gateway information of packet data network of deletion subscriber equipment in the message in the authentication procedure, and send.Certainly, judge that sending module 610 also can utilize the message that increases newly, be exclusively used in transmission deletion grouped data network gateway to send to home subscriber server the gateway information of packet data network of deletion subscriber equipment.Embodiment of the present invention does not limit the concrete title of the message that is used for the deleting load-bearing grouped data network gateway.

Judge that sending module 610 can be after receiving the message that carries subscriber equipment initialization access indication information, the gateway information of packet data network that whether stores this subscriber equipment in the home subscriber server is not judged (judging as whether the subscription data of this UE of its storage not being included PDN GW identification information), and directly send the message (carrying the renewal PDN connection request message of the indication information of deletion PDN GW identification information as direct transmission) of the gateway information of packet data network that carries the deletion subscriber equipment to home subscriber server.Judge that the flow process that sending module 610 can utilize the network equipment at its place to obtain the CAMEL-Subscription-Information of this subscriber equipment from home subscriber server sends the message that carries the gateway information of packet data network of deleting subscriber equipment to home subscriber server, deletes the gateway information of packet data network of this subscriber equipment with the indication home subscriber server.

Judge that sending module 610 also can carry after the subscriber equipment initialization inserts indication information receiving, the packet data gateway information that whether stores this subscriber equipment in the home subscriber server is judged, after in judging home subscriber server, storing the gateway information of packet data network of this subscriber equipment, send the message that carries the deletion grouped data network gateway to home subscriber server, delete the gateway information of packet data network of this subscriber equipment with the indication home subscriber server.Judge that sending module 610 can determine whether to send the message that carries the deletion grouped data network gateway by the judgement to the CAMEL-Subscription-Information of subscriber equipment.

When the CAMEL-Subscription-Information of judging 610 pairs of subscriber equipmenies of sending module is judged, the operation that judgement sending module 610 is carried out can be finished by the first judgement submodule 611 and the first submodule group that sends submodule 612, also can be finished by the submodule group of the second judgement submodule 613 and the second transmission submodule 614.Need to prove, judge that sending module 610 can comprise above-mentioned arbitrary group of submodule, also can comprise above-mentioned two groups of submodules simultaneously.

First judge whether carry in the message that submodule 611 judges that the network equipment at its place receives initialization insert indication information, with and the network equipment at place in whether store the CAMEL-Subscription-Information of this subscriber equipment, first judges that submodule 611 can export judged result.If store in the network equipment at its place in the CAMEL-Subscription-Information of this subscriber equipment and this CAMEL-Subscription-Information and include gateway information of packet data network, then first judges that submodule 611 thinks the gateway information of packet data network that stores this subscriber equipment in the home subscriber server, carrying initialization in the message that the network equipment receives inserts under the situation of indication information, first judges submodule 611 output notice information, sends submodule 612 carries the deletion subscriber equipment in message gateway information of packet data network to notify first.First judges that the network equipment that triggers its place obtained the CAMEL-Subscription-Information of this subscriber equipment when submodule 611 can also not store the CAMEL-Subscription-Information of subscriber equipment in judging the network equipment at its place from home subscriber server; Then, first judges submodule 611 continues to judge in the CAMEL-Subscription-Information that obtains from home subscriber server whether include gateway information of packet data network, include gateway information of packet data network if judge, then first judges that submodule 611 thinks the gateway information of packet data network that stores this subscriber equipment in the home subscriber server, carrying initialization in the message that the network equipment receives inserts under the situation of indication information, output notice information sends submodule 612 carries the deletion subscriber equipment in message gateway information of packet data network to notify first.

First send submodule 612 receive first judge submodule 611 output notice information (promptly first judged result of judging submodule 611 be carry in the message that receives of the network equipment initialization insert indication information, with and the network equipment at place in store the CAMEL-Subscription-Information of this subscriber equipment) after, send the message that carries the gateway information of packet data network of deleting subscriber equipment to home subscriber server.For example, judge the subscription data that stores this subscriber equipment in the network equipment at the first judgement submodule 611, include PDN GW identification information in this subscription data, and carry initialization in the message that the network equipment receives and insert indication information, first sends submodule 612 sends Update Location message to HSS, carry the indication information of the PDN GW identification information of preserving among the indication HSS deletion HSS in this message, perhaps transmission is exclusively used in the message (as Clear UE PDN Connection Request) of the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS etc., perhaps sends the renewal PDN connection request message of the indication information that carries deletion PDN GW identification information.Again for example, judge the subscription data that the network equipment is not stored this subscriber equipment at the first judgement submodule 611, first judges that submodule 611 trigger network equipment send Update Location message to HSS, first judges that submodule 611 is judged from HSS gets access to the subscription data of this subscriber equipment includes PDN GW identification information, and carry initialization in the message that the network equipment receives and insert indication information, then the first transmission submodule 612 sends the message (as Clear UE PDN Connection Request) that is exclusively used in the indication information that carries the PDN GW identification information of preserving among the indication HSS deletion HSS to HSS.

Second judges that whether carrying initialization in the message that submodule 613 judges that the network equipment at its place receives inserts the CAMEL-Subscription-Information of whether not storing this subscriber equipment in the network equipment at indication information, its place.The second judgement submodule 613 can be exported judged result.For example, second judges that submodule 613 carries initialization and inserts the CAMEL-Subscription-Information of not storing this subscriber equipment in the network equipment at indication information, its place in the message that the network equipment of judging its place receives, then direct output notice information.

Second send submodule 614 receive second announcement information of judging submodule 613 outputs (promptly second judged result of judging submodule 613 be carry in the message that receives of the network equipment initialization insert indication information, with and the network equipment at place in do not store the CAMEL-Subscription-Information of this subscriber equipment) after, send the message that carries the gateway information of packet data network of deleting subscriber equipment to home subscriber server.For example, judging second that submodule 613 is judged carries initialization in the message that the subscription data of not storing this subscriber equipment in the network equipment and the network equipment receive and inserts under the situation of indication information, second sends submodule 614 sends Update Location message to HSS, to obtain the subscription data of this UE from HSS, second sends submodule 614 carries the gateway information of packet data network of deletion subscriber equipment in Update Location message indication information.

The maintenance system of the gateway information of packet data network of embodiment of the present invention as shown in Figure 8.

In Fig. 8, the maintenance system of gateway information of packet data network comprises first network equipment 710 and home subscriber server 700.Wherein, first network equipment 710, be used to receive the message of subscriber equipment or the transmission of other network equipments, after in judging described message, carrying subscriber equipment initialization access indication information, send the message that carries indication information to home subscriber server, described indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage;

Home subscriber server 700 is used for after judging the message that receives and carrying described indication information, the gateway information of packet data network of this subscriber equipment of storing in the deletion home subscriber server.

This first network equipment 710 can be mobility management apparatus, for example SGSN or MME etc.; First network equipment 710 also can be access network element or authentication accounting server or authentication charging proxy or grouped data network gateway etc., and the concrete title of the network equipment 710 can be along with the difference of the concrete deployment of real network and changed.

This first network equipment 710 comprises: receiver module 600 and judgement sending module 610.Description in receiver module 600 and judgement sending module 610 as the above-mentioned execution mode.

Home subscriber server 700 receives the message that first network equipment 710 sends, and this message is resolved.Home subscriber server 700 carries the gateway information of packet data network of deletion subscriber equipment in judging the message that receives after, according to the user equipment information that carries in the message gateway information of packet data network of this subscriber equipment of its storage is deleted processing, for example, the address information of the grouped data network gateway of this subscriber equipment of home subscriber server 700 its storages of deletion, again for example, the FQDN information of the grouped data network gateway of this subscriber equipment of home subscriber server 700 its storages of deletion.Store simultaneously in home subscriber server 700 under the situation of the address information of grouped data network gateway of this subscriber equipment and FQDN information, home subscriber server 700 needs the address information and the FQDN information of grouped data network gateway of this subscriber equipment of its storages of deletion.Certainly, in the ownership place client server, also store under the situation of other related description information (as remarks etc.) of the grouped data network gateway of this subscriber equipment, also this related description information can be deleted in the lump.In addition, need to prove that it is to carry out that the deletion that above-mentioned home subscriber server 700 is carried out is handled under it stores the situation of gateway information of packet data network of this subscriber equipment; Also has a kind of situation, it is the gateway information of packet data network that may not store this subscriber equipment in the home subscriber server 700, in this case, when home subscriber server 700 is judged its gateway information of packet data network of not storing this subscriber equipment according to the user equipment information that carries in the message, do not carry out deletion action.

The subscriber equipment of embodiment of the present invention as shown in Figure 9.

In Fig. 9, subscriber equipment comprises generation unit 900 and transmitting element 910.

In the subscriber equipment initial access network process, generation unit 900 generates and includes the message that initialization inserts indication.It can be diversified carrying the message that initialization inserts indication information, and for example this message can be for the message in Attach Request message, PDN connection request message, the authentication procedure etc.It can be an in esse indication information in the message that the initialization here inserts indication information, also can be not carry certain information in the message, for example, when generation unit 900 when handoff procedure and initialization access procedure all need to generate same predetermined message, generation unit 900 can carry indication message in the predetermined message of handoff procedure, do not carry indication message in the predetermined message of initialization access procedure.Not carrying indication message in the predetermined message also can be called and carry initialization and insert indication.

Generation unit 900 can comprise message elements 901 and indication adding device 902.

The message that message elements 901 generates in the subscriber equipment initial access network process.Message elements 901 can generate message according to prior protocols regulation, and for example message elements 901 can generate message in Attach Request message, PDN connection request message, the authentication procedure etc. according to the prior protocols regulation.

Need carry actual indication information in message the time (when for example not carrying indication message in the predetermined message when switching), indication adding device 902 inserts indication information with initialization and is added in the message of message elements 901 generations in the cell mode.

Need not carry actual indication information in message the time, for example, when carrying indication message in the predetermined message when switching, indication adding device 902 forbids carrying indication message in message.

Transmitting element 910 sends the message that generation unit 900 generates to first network equipment, so that after first network equipment receives that the initialization of carrying inserts the message of indication, send the message that carries indication information to home subscriber server, described indication information is used to indicate home subscriber server to delete the gateway information of packet data network of this subscriber equipment of storage.Transmitting element 910 can also send to other network equipments and carry the message that initialization inserts indication, when transmitting element 910 when other network equipments send the message that generation units 900 generate, be to notify other network equipments to send to carry the message that initialization inserts indication information to first network equipment.Carry initialization when inserting the message of indication information when what first network equipment received that other network equipments or subscriber equipment send, can adopt the technical scheme of describing in the above-mentioned execution mode to send the message that carries indication information, no longer describe in detail at this to home subscriber server.

From the description of the above-mentioned network equipment and system as can be known, the network equipment is after receiving the message that carries subscriber equipment initialization access indication information of subscriber equipment or other network equipments transmission, gateway information of packet data network by indication home subscriber server deletion subscriber equipment (as the grouped data network gateway address information etc.), make home subscriber server can in time delete the unnecessary gateway information of packet data network of its storage, thereby avoided unnecessary gateway information of packet data network that follow-up processing procedures such as switching are produced dysgenic phenomenon, improved the correctness of stored information in the home subscriber server.

The subscriber equipment that the embodiment of the invention provides, can be when initial access network equipment, carry an initialization and insert indication information, like this, the network equipment just can insert indication information according to this initialization, carry out corresponding processing, in time notice HSS deletes the unnecessary gateway information of packet data network of its storage, thereby avoided unnecessary gateway information of packet data network that follow-up processing procedures such as switching are produced dysgenic phenomenon, improved the correctness of stored information in the home subscriber server.

Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.

Claims

1. the maintaining method of a gateway information of packet data network is characterized in that, comprising:

2. the method for claim 1 is characterized in that:

By under the situation of 3GPP network insertion, described first network equipment comprises: mobile management network element at subscriber equipment; Perhaps

Under the situation of subscriber equipment by non-3GPP network insertion, described first network equipment comprises: access network element or authentication accounting server or authentication charging proxy or grouped data network gateway.

3. the method for claim 1, it is characterized in that, described first network equipment stores in judging home subscriber server and carries in the gateway information of packet data network of this subscriber equipment and the described message after the subscriber equipment initialization inserts indication information, sends the message that carries indication information to home subscriber server and comprises:

Described first network equipment includes in judging the subscription data that home subscriber server stores this subscriber equipment, described subscription data and carries the subscriber equipment initialization in grouped data network gateway address information and the described message and insert indication information, then sends the message that carries indication information to home subscriber server; Perhaps

Described first network equipment is being judged the subscription data that home subscriber server does not store this subscriber equipment, then to the subscription data of this subscriber equipment of home subscriber server request, and judge from the subscription data that the home subscriber server request comes whether include the grouped data network gateway address information, carry the subscriber equipment initialization in grouped data network gateway address information and the described message and insert indication information judging to include, then send the message that carries indication information to home subscriber server.

4. as claim 1 or 2 or 3 described methods, it is characterized in that the described message that carries indication information comprises: upgrade location message or be exclusively used in the message or the update packet data network connection request message of carrying described indication information; The perhaps message in the authentication procedure.

5. method as claimed in claim 4 is characterized in that described indication information is carried in the described message in the cell mode.

6. a network equipment is characterized in that, comprising:

Described judgement sending module comprises:

7. the network equipment as claimed in claim 6 is characterized in that, the described network equipment comprises: mobile management network element, access network element, authentication accounting server, authentication charging proxy or grouped data network gateway.

8. the network equipment as claimed in claim 6 is characterized in that, described judgement sending module comprises:

First judges submodule, is used for judging whether described message carries initialization and insert the gateway information of packet data network that whether stores this subscriber equipment in indication information and the home subscriber server;

First sends submodule, is used for judging that according to first the judged result of submodule sends the message that carries indication information to home subscriber server.

9. the network equipment as claimed in claim 8 is characterized in that, described first sends submodule comprises:

Carry submodule, be used for judging that according to first the judged result of submodule is carried at message with indication information in the cell mode;

Send submodule, be used for sending the described message that carries indication information to home subscriber server.

10. the network equipment as claimed in claim 6 is characterized in that, described second sends submodule comprises:

Carry submodule, be used for judging that according to second the judged result of submodule is carried at message with indication information in the cell mode;

11. the maintenance system of a gateway information of packet data network is characterized in that, comprising:

Wherein, described first network equipment is used for specifically judging whether described message carries initialization and insert the CAMEL-Subscription-Information whether indication information and the described network equipment do not store this subscriber equipment; And, send the message of the gateway information of packet data network that carries the deletion subscriber equipment to home subscriber server according to described judged result.