Summary of the invention
Technical problem to be solved by this invention, the delivery system and the method that are to provide a kind of local IP access to connect discharge local IP access and connect to change the back at Mobility Management Entity.
In order to solve the problems of the technologies described above, the method for releasing that the present invention at first provides a kind of local IP access to connect is used for discharging after Mobility Management Entity changes the local IP access that lost efficacy and connects, and this method comprises:
Whether the former Mobility Management Entity of serving terminal before the change is served target local IAD identification information or the Target Wireless side network element ID information or the target home base station gateway identification information of described terminal after obtaining change, and connect effective according to described identification information judgment local IP access; Perhaps
Whether the target mobility management entity of serving described terminal after the change is obtained former local IAD identification information or the former wireless side network element ID information or the former home base-station gateway identification information of serving described terminal before the change, and connect according to described identification information judgment local IP access and to lose efficacy;
Described former Mobility Management Entity discharges the local IP access that lost efficacy and connects.
Preferably, described change comprises by the switching of terminal described in the long evolving system or tracing section updating and causing that perhaps reorientation or the Routing Area Update by terminal described in the universal mobile telecommunications system land wireless access system causes.
Preferably, in the described tracing section updating flow process, described terminal sends the tracing section updating request message to described Target Wireless side network element, described Target Wireless side network element is after described terminal is selected described target mobility management entity, and described tracing section updating request message is transmitted to described target mobility management entity; When described Target Wireless side entity is supported local IP access, described target mobility management entity sends to the identification information that carries described target local IAD or Target Wireless side entity in the context request message of described former Mobility Management Entity, and whether described former Mobility Management Entity connects according to the described local IP access of the identification information judgment of described target local IAD or Target Wireless side entity and lost efficacy;
In the described Routing Area Update process, described terminal sends the Routing Area Update request message to described Target Wireless side network element, described Target Wireless side network element is that described terminal is selected described target mobility management entity, and described Routing Area Update request message is transmitted to described target mobility management entity; When described Target Wireless side entity is supported local IP access, described target mobility management entity sends to the identification information that carries described target local IAD or Target Wireless side entity in the context request message of described former Mobility Management Entity, and whether described former Mobility Management Entity connects according to the described local IP access of the identification information judgment of described target local IAD or Target Wireless side entity and lost efficacy.
Preferably, after described former Mobility Management Entity is received described context request message, check whether exist local IP access to connect, exist and then further judge whether the identification information of described target local IAD is consistent with the identification information of described former local IAD, inconsistent then local IP access connects inefficacy, perhaps further judge whether the identification information of described Target Wireless side entity is consistent with the identification information of described former wireless side entity, inconsistent then local IP access connects inefficacy.
Preferably, when described Target Wireless side entity is not supported local IP access, described target mobility management entity sends to the identification information that does not carry described target local IAD or Target Wireless side entity in the context request message of described former Mobility Management Entity, perhaps do not carry the identification information of described target local IAD or Target Wireless side entity and carry the indication information of not supporting local IP access, described former Mobility Management Entity is judged described local IP access and is connected inefficacy according to the described context request message of the identification information that does not carry described target local IAD or Target Wireless side entity or the described context request message of carrying described indication information.
Preferably, in described switching or the redirection process, described former wireless side network element sends handoff request message to described former Mobility Management Entity, and described handoff request message is carried the identification information of described target local IAD; Whether described former Mobility Management Entity receives after the described handoff request message according to the identification information of described target local IAD, judge that described local IP access connects to lose efficacy.
Preferably, in described handoff procedure or the redirection process, do not carry the identification information of described target local IAD in the described handoff request message, then local IP access connects inefficacy.
Preferably, after described former Mobility Management Entity is received described handoff request message, check whether exist local IP access to connect, further judge whether the identification information of described target local IAD is consistent with the identification information of described former local IAD when existing, inconsistent then local IP access connects inefficacy.
Preferably, after described former Mobility Management Entity is judged the local IP access connection of inefficacy, do not comprise the local IP access connection of described inefficacy to the beared information of described target mobility management entity transmission.
Preferably, in the described tracing section updating process, described terminal sends the tracing section updating request message to described Target Wireless side network element, described Target Wireless side network element is after described terminal is selected described target mobility management entity, and described tracing section updating request message is transmitted to described target mobility management entity; Described target mobility management entity sends context request message to described former Mobility Management Entity, when existing local IP access to connect, described former Mobility Management Entity carries the identification information of described former local IAD or former wireless side entity in the context response information that described target mobility management entity sends, whether described target mobility management entity connects according to the described local IP access of the identification information judgment of described former local IAD or former wireless side entity and lost efficacy;
In the described Routing Area Update process, described terminal sends the Routing Area Update request message to described Target Wireless side network element, described Target Wireless side network element is that described terminal is selected described target mobility management entity, and described Routing Area Update request message is transmitted to described target mobility management entity; Described target mobility management entity sends context request message to described former Mobility Management Entity, when existing local IP access to connect, described former Mobility Management Entity carries the identification information of described former local IAD or former wireless side entity in the context response information that described target mobility management entity sends, whether described target mobility management entity connects according to the described local IP access of the identification information judgment of described former local IAD or former wireless side entity and lost efficacy.
Preferably, after described target mobility management entity is received described context response information, check whether exist local IP access to connect, further judge whether whether the identification information of described former local IAD consistent with the identification information of described target local IAD when existing, inconsistent then local IP access connects inefficacy, whether whether the identification information of perhaps judging described former wireless side entity consistent with the identification information of described Target Wireless side entity, and inconsistent then local IP access connects inefficacy; Local IP access does not connect inefficacy when not existing local IP access to connect.
Preferably, when not existing local IP access to connect, described former Mobility Management Entity does not carry the identification information of described former local IAD or former wireless side entity in the context response information that described target mobility management entity sends, perhaps do not carry the identification information of described former local IAD or former wireless side entity and carry the indication information that does not exist local IP access to connect.
Preferably, in the described handoff procedure, described former wireless side network element sends handoff request message to described former Mobility Management Entity, described former Mobility Management Entity is after described terminal is selected described target mobility management entity, before sending the reorientation of the identification information that carries described former local IAD or former wireless side entity, described target mobility management entity changes request message, described target mobility management entity sends handoff request message to described Target Wireless side network element, described Target Wireless side network element sends switching request acknowledgement message to described target mobility management entity, described switching request acknowledgement message is carried the identification information of described target local IAD or Target Wireless side entity, and whether described target mobility management entity connects according to the described local IP access of the identification information judgment of described target local IAD or Target Wireless side entity and lost efficacy;
In the described redirection process, described former wireless side network element sends the handoff request message of the identification information that carries Target Wireless side network element to described former Mobility Management Entity, described former Mobility Management Entity is after described terminal is selected described target mobility management entity, before sending the reorientation of the identification information that carries described former local IAD or former wireless side entity, described target mobility management entity changes request message, described target mobility management entity sends RELOCATION REQUEST message to described Target Wireless side network element, described Target Wireless side network element sends the re-positioning request acknowledgement message to described target mobility management entity, described re-positioning request acknowledgement message carries the identification information of described target local IAD or Target Wireless side entity, and whether described target mobility management entity connects according to the described local IP access of the identification information judgment of described target local IAD or Target Wireless side entity and lost efficacy.
Preferably, after described target mobility management entity is received the preceding commentaries on classics of described reorientation request message, check whether exist local IP access to connect, further judge whether whether the identification information of described former local IAD consistent with the identification information of described target local IAD when existing, inconsistent then local IP access connects inefficacy.
Preferably, after described target mobility management entity is judged the local IP access connection of inefficacy, respond local IP access inefficacy indication to described former Mobility Management Entity by message.
Preferably, described former Mobility Management Entity and/or target mobility management entity comprise the Serving GPRS Support Node in mobile management unit, the mobile switching centre in the global system for mobile communications or the universal mobile telecommunications system land wireless access system in the long evolving system.
Preferably, the identification information of described target local IAD comprises the address of described target local IAD or is exclusively used in the identification information that identifies described target local IAD;
The identification information of described Target Wireless side network element comprises the address of described Target Wireless side network element or is exclusively used in the identification information that identifies described Target Wireless side network element;
The identification information of described target home base station gateway comprises the address of described target home base station gateway or is exclusively used in the identification information that identifies described target home base station gateway;
The identification information of described former local IAD comprises the address of described former local IAD or is exclusively used in the identification information that identifies described former local IAD;
The identification information of described former wireless side network element comprises the address of described former wireless side network element or is exclusively used in the identification information that identifies described former wireless side network element;
The identification information of described former home base-station gateway comprises the address of described former home base-station gateway or is exclusively used in the identification information that identifies described former home base-station gateway.
In order to solve the problems of the technologies described above, the delivery system that the present invention also provides a kind of local IP access to connect, be used for Mobility Management Entity and change the back and discharge the local IP access that lost efficacy and connect, this system comprises the former Mobility Management Entity of serving terminal before the change, wherein:
Described former Mobility Management Entity is served target local IAD identification information or the Target Wireless side network element ID information or the target home base station gateway identification information of described terminal after being arranged to obtain change, and whether effectively also discharges the local IP access connection of inefficacy according to described identification information judgment local IP access connection.
In order to solve the problems of the technologies described above, the delivery system that the present invention also provides another kind of local IP access to connect, be used for Mobility Management Entity and change the local IP access connection that the back discharges inefficacy, this system comprise the former Mobility Management Entity of serving terminal before the change and change after serve the target mobility management entity of described terminal, wherein:
Described target mobility management entity is arranged to obtain former local IAD identification information or the former wireless side network element ID information or the former home base-station gateway identification information of serving described terminal before the change, and after going out local IP access and connect to lose efficacy according to described identification information judgment, respond the local IP access indication of losing efficacy to described former Mobility Management Entity by message;
Described former Mobility Management Entity is arranged to discharge the local IP access that lost efficacy according to described local IP access inefficacy indication and is connected.
Compared with prior art, local IP access provided by the invention connects the system and method that discharges, and has solved the inefficacy that brings after Mobility Management Entity changes and has connected the problem how to discharge.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, how the application technology means solve technical problem to the present invention whereby, and the implementation procedure of reaching technique effect can fully understand and implements according to this.
The local IP access that the present invention proposes connects the method that discharges, in the flow process of switching, reorientation, tracing section updating or Routing Area Update, the Mobility Management Entity of serving terminal before switching, reorientation, tracing section updating or Routing Area Update is the identification information that former Mobility Management Entity obtains target local IAD, Target Wireless side network element or target home base station gateway, and, judge whether the LIPA connection lost efficacy according to this identification information; Wherein target local IAD, Target Wireless side network element and target home base station gateway are respectively that the local access network of serving terminal behind this switching, reorientation, tracing section updating or the Routing Area Update closes, wireless side network element or home base-station gateway;
Connect for the LIPA that lost efficacy, when former Mobility Management Entity is served terminal after the beared information that send to need activates or switch sends to switching, reorientation, tracing section updating or Routing Area Update Mobility Management Entity is target mobility management entity, do not send the beared information that the LIPA of this inefficacy connects; Perhaps
In the flow process of switching, reorientation, tracing section updating or Routing Area Update, target mobility management entity obtains the identification information of former local IAD, former wireless side network element or former home base-station gateway, and, judge whether the LIPA connection lost efficacy according to this identification information.Connect for the LIPA that lost efficacy, target mobility management entity notifies former Mobility Management Entity LIPA to connect inefficacy.Wherein former local IAD, former wireless side network element and former home base-station gateway are respectively that the local access network of serving terminal before this switching, reorientation, tracing section updating or the Routing Area Update closes, wireless side network element or home base-station gateway.
Wherein, the identification information of above-mentioned target local IAD comprises the address of target local IAD or is exclusively used in the identification information that identifies the target local IAD; The identification information of above-mentioned Target Wireless side network element comprises the address of Target Wireless side network element or is exclusively used in the identification information that identifies Target Wireless side network element; The identification information of above-mentioned target home base station gateway comprises the address of target home base station gateway or is exclusively used in the identification information that identifies the target home base station gateway.
Wherein, the identification information of above-mentioned former local IAD comprises the address of former local IAD or is exclusively used in the identification information that identifies former local IAD; The identification information of above-mentioned former wireless side network element comprises the address of former wireless side network element or is exclusively used in the identification information that identifies former wireless side network element; The identification information of above-mentioned former home base-station gateway comprises the address of former home base-station gateway or is exclusively used in the identification information that identifies former home base-station gateway.
Connect for the LIPA that lost efficacy, former Mobility Management Entity discharges this LIPA and connects.
Wherein, the identification information of former Mobility Management Entity acquisition is transmitted by target mobility management entity.The identification information that target mobility management entity obtains is transmitted by former Mobility Management Entity.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes.The identification information of wireless side network element can be the address of wireless side network element, or is exclusively used in the identification information of sign wireless side network element.
Wherein, the wireless side entity can be base station, base station from home or radio network controller (RadioNetwork Controller abbreviates RNC as).Mobility Management Entity can be (the Mobility Management Entity of the mobile management unit in the LTE system, abbreviate MME as), (the Mobile Switching Centre of mobile switching centre in the global system for mobile communications (GSM), abbreviate MSC as) or the UTRAN system in Serving GPRS Support Node (Serving GPRS Support Node abbreviates SGSN as).It can be L-SGW, L-PGW or L-GGSN that local access network closes.The core net IAD can be S-GW or SGSN.
Fig. 3 is the schematic flow sheet of first embodiment of the invention.First embodiment of the invention be in the Long Term Evolution LTE system in the tracing section updating process local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), first embodiment of the invention mainly comprises the steps:
Step 301, the terminal of Idle state are regularly or owing to move and cause the tracking area tabulation initiating updating of tracking area flow process that changes; Terminal sends Non-Access Stratum (Non-Access-Stratum abbreviates NAS as) message-tracing section updating request message and gives current be the wireless side network element of Terminal Service (being referred to as Target Wireless side network element).After terminal moved, this Target Wireless side network element may be different with the wireless side network element (being referred to as former wireless side network element) before terminal enters Idle state.
Step 302, Target Wireless side network element are the Mobility Management Entity (being referred to as target mobility management entity) that terminal selects to be currently serviced in terminal, and the tracing section updating request message is included in the S1 message issues target mobility management entity; If there is home base-station gateway, then earlier this tracing section updating request is transmitted to home base-station gateway, and then by home base-station gateway select target Mobility Management Entity, and this tracing section updating request message is issued target mobility management entity.
Wherein, Mobility Management Entity is MME in the LTE system.
Step 303, target mobility management entity obtain the address that terminal enters Idle state Mobility Management Entity (being referred to as former Mobility Management Entity) before according to the tracing section updating request message, and initiate context to former Mobility Management Entity and obtain flow process; Target mobility management entity sends context request message to former Mobility Management Entity, and carries the identification information of target local IAD or the identification information of Target Wireless side entity in context request message.
When the Target Wireless side entity is supported local IP access, in message, carry the identification information or the Target Wireless side entity identification information of target local IAD.
When the Target Wireless side entity is not supported local IP access, can in message, not carry the identification information or the Target Wireless side entity identification information of target local IAD and represent not support local IP access; Perhaps in message, do not support local IP access by the indication information indication.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes; The identification information of wireless side network element can be the address of wireless side network element, or is exclusively used in the identification information of sign wireless side network element.
Wherein, the identification information of local access network pass is meant the address of L-PGW.
Whether step 304 after former Mobility Management Entity is received context request message, checks whether terminal exists local IP access to connect, if the LIPA that exists then identification information in the request message based on context or indication information to check terminal connects be affected.
For the terminal that exists local IP access to connect:
When carry in the message be the identification information of target local IAD the time, former Mobility Management Entity checks whether the identification information of the target local IAD that carries in identification information that local access network that the terminal local IP access connects closes and the context request message is consistent, if the consistent local access network of thinking that then LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then LIPA connects closes variation has taken place, the LIPA of terminal connects to be needed to discharge.The identification information that the local access network that the terminal local IP access connects closes is set up in terminal and is kept in the context when LIPA connects.
When carry in the message be the identification information of Target Wireless side network element the time, former Mobility Management Entity checks whether the identification information of the Target Wireless side network element that carries in wireless side network element ID information that the terminal local IP access connects and the message is consistent, if unanimity thinks that then terminal still inserts from former wireless side network element, the LIPA of terminal connects unaffected; Think then that as if inconsistent terminal inserts from new wireless side network element, the LIPA of terminal connects to be needed to discharge; The wireless side network element ID information that the terminal local IP access connects is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
When not carrying any identification information in the message or carrying the indication information of not supporting local IP access, expression Target Wireless side network element is not supported local IP access, and the local IP access of terminal connects to be needed to discharge.
Step 305, former Mobility Management Entity is included in the contextual information of terminal in the context response information, issues target mobility management entity, and carrying in the context response information needs the beared information that activates or is referred to as beared information to be activated; According to the judged result of step 304, local IP access connects to be needed to discharge, and does not need to carry the beared information of this connection in the context response information, in order to finish the release of losing efficacy and connecting.
Step 306, target mobility management entity may be initiated the authentication flow process to terminal.
Step 307, target mobility management entity is responded context acknowledgement message to former Mobility Management Entity.
Step 308,309, target mobility management entity is initiated session foundation and the bearer update flow process that core net connects.
Step 310, target mobility management entity is initiated more new technological process of position to the Authentication Authorization server.
Step 311, the Authentication Authorization server is initiated position deletion flow process to former Mobility Management Entity.
Step 312, former Mobility Management Entity may be deleted to core net S-GW initiation session.
Step 313, former Mobility Management Entity are initiated LIPA session deletion flow process according to the judged result of step 304 to former local IAD; This step can be carried out any time after step 304.
Step 314,315, target mobility management entity sends Routing Area Update and accepts to terminal.
In the present embodiment, local access network closes and to be L-PGW and L-SGW, and present embodiment is an example near being positioned at wireless side network element or its with L-PGW and L-SGW, and the release flow process of terminal local IP access connection be described when Mobility Management Entity changes.When L-SGW did not exist, it was similar to this flow process to connect the release flow process, and difference is that MME needs directly and L-PGW carries out interacting message, no longer includes the participation of L-SGW in the flow process, no longer describes in detail herein.
It is identical with this flow process to discharge flow process when being positioned at core net for L-SGW, and just MME needs and the SGW of core net carries out interacting message, notifies L-PGW again by core net SGW notice L-PGW, rather than by L-SGW, herein detailed description no longer.
Fig. 4 is the schematic flow sheet of second embodiment of the invention.Second embodiment of the invention be in the LTE system in another tracing section updating process local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), second embodiment of the invention mainly comprises the steps:
Step 401, the terminal of Idle state regularly or owing to moving cause the tracking area tabulation to change the initiating updating of tracking area flow process.
Terminal sends Non-Access Stratum (Non-Access-Stratum abbreviates NAS as) message-tracing section updating request message and gives current be the wireless side network element of Terminal Service (being referred to as Target Wireless side network element);
After terminal moved, this wireless side network element may be different with the wireless side network element (being referred to as former wireless side network element) before terminal enters Idle state.
Step 402, wireless side network element are that terminal is selected to be currently serviced in the Mobility Management Entity (being referred to as target mobility management entity) of terminal, and the tracing section updating request message is included in initial user message issues target mobility management entity; If there is home base-station gateway, then earlier this initial user message is transmitted to home base-station gateway, and then by home base-station gateway select target Mobility Management Entity, and this initial user message is issued target mobility management entity.
Wherein, Mobility Management Entity is MME in the LTE system.
Step 403, target mobility management entity is according to the tracing section updating request message, obtain the address that terminal enters Idle state Mobility Management Entity (being referred to as former Mobility Management Entity) before, and send context request message, initiate context and obtain flow process to former Mobility Management Entity.
Step 404, after former Mobility Management Entity is received this context request message, the contextual information of terminal is included in the context response information, issue target mobility management entity, in context response information, carry the identification information of former local IAD or the identification information of former wireless side entity simultaneously.
When terminal exists local IP access to connect, the identification information or the former wireless side entity identification information of in context response information, carrying former local IAD.
When terminal does not exist local IP access to connect, can in context response information, not carry the identification information or the former wireless side entity identification information of former local IAD and represent not exist local IP access to connect; Perhaps in message, do not exist local IP access to connect by the indication information indication.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes; The identification information of wireless side network element can be the address of wireless side network element, or is exclusively used in the identification information of sign wireless side network element.
Wherein, the identification information of the former local IAD of terminal local IP access connection is set up in terminal and is kept in the context when LIPA connects; The former wireless side network element ID information that the terminal local IP access connects is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
Wherein, the identification information of local access network pass is meant the address of L-PGW.
Step 405, after target mobility management entity was received message, whether the inspection terminal existed local IP access to connect, if exist, then checked according to identification information in the message or indication information whether the LIPA connection of terminal is affected.
For the terminal that exists local IP access to connect:
When carry in the message be the identification information of former local IAD the time, whether the identification information of the former local IAD that carries in the identification information that target mobility management entity is checked the target local IAD and the message is consistent, if the consistent local access network of thinking that then LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then LIPA connects closes variation has taken place, the LIPA of terminal connects to be needed to discharge.
When carry in the message be the identification information of former wireless side network element the time, target mobility management entity checks whether the identification information of the former wireless side network element that carries in Target Wireless side network element ID information and the message is consistent, if unanimity thinks that then terminal still inserts from former wireless side network element, the LIPA of terminal connects unaffected; Think then that as if inconsistent terminal inserts from new former wireless side network element, the LIPA of terminal connects to be needed to discharge.
When not carrying any identification information in the message or carry the indication information that does not have the local IP access connection, the expression terminal does not have local IP access to connect.
In message, carried identification information, but when Target Wireless side network element was not supported local IP access, the local IP access of terminal connects to be needed to discharge.
Step 406, target mobility management entity may be initiated the authentication flow process to terminal.
Step 407, target mobility management entity is responded context acknowledgement message to former Mobility Management Entity; According to the judged result of step 405, if connecting, the LIPA of terminal needs to discharge, then in message, carry LIPA inefficacy indication.
Step 408-415 is with step 308-315.
In the present embodiment, local access network closes and is L-PGW and L-SGW.It is example explanation Mobility Management Entity when changing that present embodiment is positioned near wireless side network element or its with L-PGW and L-SGW, the release flow process that the terminal local IP access connects.It is similar to this flow process to discharge flow process when L-SGW does not exist, and just MME needs directly and L-PGW carries out interacting message, no longer includes the participation of L-SGW in the flow process, herein detailed description no longer.It is identical with this flow process to discharge flow process when being positioned at core net for L-SGW, and just MME needs and the SGW of core net carries out interacting message, notifies L-PGW again by core net SGW notice L-PGW, rather than by L-SGW, herein detailed description no longer.
Fig. 5 is the schematic flow sheet of third embodiment of the invention.Third embodiment of the invention be in the LTE system in the handoff procedure local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), third embodiment of the invention mainly comprises the steps:
Step 501, wireless side network element judge that needing to initiate S1 switches; Former wireless side network element and Target Wireless side network element exist when mutual, Target Wireless side network element can be passed to former wireless side network element to the identification information of its local access network pass (target local IAD), and perhaps terminal can be given former wireless side network element with the identification-information reporting of target local IAD.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes.
Wherein, the identification information of local access network pass is meant the address of L-PGW.
Step 502, former wireless side network element sends handoff request message to former Mobility Management Entity, carries the identification information of Target Wireless side entity in this handoff request message.If obtained the identification information of target local IAD, then also be carried in this handoff request message and pass to former Mobility Management Entity.If there is home base-station gateway, then gives home base-station gateway with this handoff request forwards earlier, and then handoff request message is issued former Mobility Management Entity by home base-station gateway.
Wherein, Mobility Management Entity is MME in the LTE system.
Step 503 after former Mobility Management Entity is received handoff request message, checks whether terminal exists local IP access to connect, if exist, checks then whether the LIPA connection of terminal is affected.
For the terminal that exists local IP access to connect:
When carrying the identification information of target local IAD in the handoff request message, whether the identification information that the local access network that former Mobility Management Entity inspection terminal local IP access connects closes and the identification information of target local IAD be consistent, if the consistent local access network of thinking that then terminal LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then terminal LIPA connects closes change, the LIPA of terminal connects to be needed to discharge.The identification information that the local access network that the terminal local IP access connects closes is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
When not carrying the identification information of target local IAD in the handoff request message, the local IP access of terminal connects to be needed to discharge, can think that Target Wireless side network element do not support local IP access this moment, no matter perhaps whether Target Wireless side network element supports local IP access, all need to discharge local IP access after the wireless side network element changes and connect.
Step 504, former Mobility Management Entity is to be the Mobility Management Entity of Terminal Service (being referred to as target mobility management entity) after terminal is selected to switch, and before target mobility management entity sends reorientation, change request message, change before this reorientation and carry the beared information that needs switching in the request message.According to the judged result of step 503, if connecting, the terminal local IP access needs to discharge, then in message, do not carry the beared information of this connection, in order to finish the release of losing efficacy and connecting.
Step 505, target mobility management entity may be set up, transmit the tunnel to the session that target S-GW initiation core net connects and set up flow process.
Step 506, target mobility management entity sends handoff request message to Target Wireless side network element.
Step 507, Target Wireless side network element is responded switching request acknowledgement message to target mobility management entity.
Step 508 continues normal switching flow.
Step 509, terminal may the initiating updating of tracking area flow process.
Step 510, former Mobility Management Entity may be to the former S-GW initiation session deletion of core net, the deletion of forwarding tunnel.
Step 511, former Mobility Management Entity are initiated LIPA session deletion flow process according to the judged result of step 503 to former local IAD; This step can be carried out any time after step 503.
Step 512, target mobility management entity may initiate to transmit the tunnel deletion to core net target S-GW.
In the present embodiment, local access network closes and is L-PGW and L-SGW.It is example explanation Mobility Management Entity when changing that present embodiment is positioned near wireless side network element or its with L-PGW and L-SGW, the release flow process that the terminal local IP access connects.It is similar to this flow process to discharge flow process when L-SGW does not exist, and just MME needs directly and L-PGW carries out interacting message, no longer includes the participation of L-SGW in the flow process, herein detailed description no longer.It is identical with this flow process to discharge flow process when being positioned at core net for L-SGW, and just MME needs and the SGW of core net carries out interacting message, notifies L-PGW again by core net SGW notice L-PGW, rather than by L-SGW, herein detailed description no longer.
Present embodiment judges that with former Mobility Management Entity whether influenced terminal LIPA connects is example, and similar with embodiment shown in Figure 4, target mobility management entity also can be done this judgement, no longer describes in detail herein.
Other switching flows flow process therewith are similar, no longer describe in detail herein.
Fig. 5 a is the schematic flow sheet of fourth embodiment of the invention.Fourth embodiment of the invention be in the LTE system in the handoff procedure another local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), fourth embodiment of the invention mainly comprises the steps:
Step 501a, wireless side network element judge that needing to initiate S1 switches.
Step 502a, former wireless side network element sends handoff request message to former Mobility Management Entity; If there is home base-station gateway, then gives home base-station gateway with this handoff request forwards earlier, and then this handoff request message message is issued former Mobility Management Entity by home base-station gateway.
Wherein, Mobility Management Entity is MME in the LTE system.
Step 503a, former Mobility Management Entity is to be the Mobility Management Entity of Terminal Service (being referred to as target mobility management entity) after terminal is selected to switch, and before target mobility management entity sends reorientation, change request message, carry the identification information of former local IAD or the identification information of former wireless side entity in the message.
Step 504a, target mobility management entity may be set up, transmit the tunnel to the session that target S-GW initiation core net connects and set up flow process.
Step 505a, target mobility management entity sends handoff request message to Target Wireless side network element.
Step 506a, Target Wireless side network element is responded switching request acknowledgement message to target mobility management entity, and carries target local IAD sign in message.
Step 507a is with step 405; But message wherein is switching request acknowledgement message.
Step 508a, target mobility management entity is changeed response message before responding reorientation.According to the judged result of step 507a, the terminal local IP access connects to be needed to discharge, and carries LIPA and connect the inefficacy indication information in message, and indication discharges LIPA and connects.
Step 509a, target mobility management entity is initiated the deleting load-bearing flow process for this LIPA connects.The wireless side network element is this LIPA reserved resource behind the deletion step 505a.
Step 510a-514a is identical with step 508-512 respectively.
Fig. 6 is the schematic flow sheet of fifth embodiment of the invention.Fifth embodiment of the invention be in the UTRAN system in the Routing Area Update process another local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), fifth embodiment of the invention mainly comprises the steps:
Step 601, the terminal of Idle state are regularly or owing to move and cause the route district to change initiating the Routing Area Update flow process.Terminal sends Non-Access Stratum (Non-Access-Stratum is called for short NAS) message-Routing Area Update request and gives current be the wireless side network element of Terminal Service (being referred to as Target Wireless side network element).After terminal moved, this wireless side network element may be different with the wireless side network element (being referred to as former wireless side network element) before terminal enters Idle state.
Step 602, wireless side network element are that terminal is selected to be currently serviced in the Mobility Management Entity (being referred to as target mobility management entity) of terminal, and the tracing section updating request message is included in initial user message issues target mobility management entity.If there is home base-station gateway, then earlier this initial user message is transmitted to home base-station gateway, and then by home base-station gateway select target Mobility Management Entity, and this initial user message is issued target mobility management entity.
Wherein, Mobility Management Entity is SGSN in the UTRAN system.
Step 603, target mobility management entity obtain the address that terminal enters Idle state Mobility Management Entity (being referred to as former Mobility Management Entity) before according to the Routing Area Update request message, and initiate context to former Mobility Management Entity and obtain flow process.Target mobility management entity sends context request message to former Mobility Management Entity, and carries the identification information of target local IAD or the identification information of Target Wireless side entity in this context request message.
When the Target Wireless side entity is supported local IP access, in context request message, carry the identification information or the Target Wireless side entity identification information of target local IAD.
When the Target Wireless side entity is not supported local IP access, can in context request message, not carry the identification information or the Target Wireless side entity identification information of target local IAD and represent not support local IP access; Perhaps in context request message, do not support local IP access by the indication information indication.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes.The identification information of wireless side network element can be the address of wireless side network element, or is exclusively used in the identification information of sign wireless side network element.
Wherein, the identification information of local access network pass is meant the address of L-GGSN.
Step 604 after former Mobility Management Entity is received context request message, checks whether terminal exists local IP access to connect, if exist, then based on context whether identification information in the request message or the indication information LIPA that checks terminal connects and be affected.
For the terminal that exists local IP access to connect:
When carry in the context request message be the identification information of target local IAD the time, former Mobility Management Entity checks whether the identification information of the target local IAD that carries in identification information that local access network that the terminal local IP access connects closes and the message is consistent, if the consistent local access network of thinking that then LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then LIPA connects closes variation has taken place, the LIPA of terminal connects to be needed to discharge.The identification information that the local access network that the terminal local IP access connects closes is set up in terminal and is kept in the context when LIPA connects.
When carry in the context request message be the identification information of Target Wireless side network element the time, former Mobility Management Entity checks whether the identification information of the Target Wireless side network element that carries in wireless side network element ID information that the terminal local IP access connects and the context request message is consistent, if unanimity thinks that then terminal still inserts from former wireless side network element, the LIPA of terminal connects unaffected; Think then that as if inconsistent terminal inserts from new former wireless side network element, the LIPA of terminal connects to be needed to discharge.The wireless side network element ID information that the terminal local IP access connects is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
When not carrying any identification information in the message or carrying the indication information of not supporting local IP access, expression Target Wireless side network element is not supported local IP access, and the local IP access of terminal connects to be needed to discharge.
Step 605, former Mobility Management Entity is included in the contextual information of terminal in the context response information, issues target mobility management entity, and carrying in the message needs the beared information that activates or is referred to as beared information to be activated.According to the judged result of step 604, local IP access connects when needing to discharge, and does not carry the beared information of this connection in context response, in order to finish the release of losing efficacy and connecting.
Step 606, target mobility management entity may be initiated the authentication flow process to terminal.
Step 607, target mobility management entity is responded context acknowledgement message to former Mobility Management Entity.
Step 608, the PDP Context that target mobility management entity initiation core net connects is new technological process more.
Step 609, target mobility management entity is initiated more new technological process of position to the Authentication Authorization server.
Step 610, the Authentication Authorization server is initiated position deletion flow process to former Mobility Management Entity.
Step 611, former Mobility Management Entity are initiated LIPA to former local IAD and are connected PDP Context deletion flow process according to the judged result of step 604; This step can be carried out any time after step 604.
Step 612,613, target mobility management entity sends Routing Area Update and accepts to terminal, and terminal is responded Routing Area Update and is finished.
In the present embodiment, local access network closes and is L-GGSN.It is example explanation Mobility Management Entity when changing that present embodiment is positioned near wireless side network element or its with L-GGSN, the release flow process that the terminal local IP access connects.
Fig. 7 is the schematic flow sheet of sixth embodiment of the invention.Sixth embodiment of the invention be in the UTRAN system in the Routing Area Update process another local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), sixth embodiment of the invention mainly comprises the steps:
Step 701, the terminal of Idle state are regularly or owing to move and cause the route district to change initiating the Routing Area Update flow process.Terminal sends Non-Access Stratum (Non-Access-Stratum abbreviates NAS as) message-Routing Area Update request message and gives current be the wireless side network element of Terminal Service (being referred to as Target Wireless side network element).After terminal moved, this wireless side network element may be different with the wireless side network element (being referred to as former wireless side network element) before terminal enters Idle state.
Step 702, wireless side network element are that terminal is selected to be currently serviced in the Mobility Management Entity (being referred to as target mobility management entity) of terminal, and the tracing section updating request message is included in initial user message issues target mobility management entity.If there is home base-station gateway, then earlier this initial user message is transmitted to home base-station gateway, and then by home base-station gateway select target Mobility Management Entity, and this initial user message message is issued target mobility management entity.
Wherein, Mobility Management Entity is SGSN in the UTRAN system.
Step 703, target mobility management entity is according to the Routing Area Update request message, obtain the address that terminal enters Idle state Mobility Management Entity (being referred to as former Mobility Management Entity) before, and send context request message, initiate context and obtain flow process to former Mobility Management Entity.
Step 704 after former Mobility Management Entity is received context request message, is included in the contextual information of terminal in the context response information, issues target mobility management entity.In context response information, carry simultaneously the identification information of former local IAD or the identification information of former wireless side entity.
When terminal exists local IP access to connect, the identification information or the former wireless side entity identification information of in context response information, carrying former local IAD.
When terminal does not exist local IP access to connect, can in context response information, not carry the identification information or the former wireless side entity identification information of former local IAD and represent not exist local IP access to connect; Perhaps in message, do not exist local IP access to connect by the indication information indication.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes.The identification information of wireless side network element can be the address of wireless side network element, or is exclusively used in the identification information of sign wireless side network element.
Wherein, the identification information of the former local IAD of terminal local IP access connection is set up in terminal and is kept in the context when LIPA connects.The former wireless side network element ID information that the terminal local IP access connects is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
Wherein, the identification information of local access network pass is meant the address of L-GGSN.
Step 705, target mobility management entity may be initiated the authentication flow process to terminal.
Step 706 after target mobility management entity is received context response information, checks whether terminal exists local IP access to connect, if exist, then based on context whether identification information in the response message or the indication information LIPA that checks terminal connects and be affected.
For the terminal that exists local IP access to connect:
When carry in the context response information be the identification information of former local IAD the time, whether the identification information of the former local IAD that carries in the identification information that target mobility management entity is checked the target local IAD and the message is consistent, if the consistent local access network of thinking that then LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then LIPA connects closes variation has taken place, the LIPA of terminal connects to be needed to discharge.
When carry in the context response information be the identification information of former wireless side network element the time, target mobility management entity checks whether the identification information of the former wireless side network element that carries in Target Wireless side network element ID information and the context response information is consistent, if unanimity thinks that then terminal still inserts from former wireless side network element, the LIPA of terminal connects unaffected; Think then that as if inconsistent terminal inserts from new former wireless side network element, the LIPA of terminal connects to be needed to discharge.
When not carrying any identification information in the context response information or carry the indication information that does not have the local IP access connection, the expression terminal does not have local IP access to connect.
In context response information, carried identification information, but when Target Wireless side network element was not supported local IP access, the local IP access of terminal connects to be needed to discharge.
Step 707, target mobility management entity is responded context acknowledgement message to former Mobility Management Entity.According to the judged result of step 706, the LIPA of terminal connects when needing to discharge, and carries LIPA inefficacy indication information in message.
Step 708-713 is with step 608-613.
In the present embodiment, local access network closes and is L-GGSN.It is example explanation Mobility Management Entity when changing that present embodiment is positioned near wireless side network element or its with L-GGSN, the release flow process that the terminal local IP access connects.
Fig. 8 is the schematic flow sheet of seventh embodiment of the invention.Seventh embodiment of the invention be in the UTRAN system in the repositioning process local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), seventh embodiment of the invention mainly comprises the steps:
Step 801, wireless side network element are judged needs to initiate reorientation; Former wireless side network element and Target Wireless side network element exist when mutual, Target Wireless side network element can be passed to former wireless side network element to the identification information of its local access network pass (target local IAD), and perhaps terminal can be given former wireless side network element with the identification-information reporting of target local IAD.
Wherein, the identification information that local access network closes can be the address that local access network closes, or is exclusively used in the identification information that the sign local access network closes.
Wherein, the identification information of local access network pass is meant the address of L-GGSN.
Step 802, former wireless side network element sends handoff request message, the sign of carrying the Target Wireless side entity in this handoff request message to former Mobility Management Entity.If obtained the identification information of target local IAD, then also be carried in this handoff request message and pass to former Mobility Management Entity.If there is home base-station gateway, then gives home base-station gateway with this handoff request forwards earlier, and then this handoff request message is issued former Mobility Management Entity by home base-station gateway.
Wherein, Mobility Management Entity is SGSN in the UTRAN system.
After step 803, former Mobility Management Entity are received this handoff request message, check whether terminal exists local IP access to connect,, check then whether the LIPA connection of terminal is affected if exist.
For the terminal that exists local IP access to connect:
When carrying the identification information of target local IAD in the handoff request message, whether the identification information that the local access network that former Mobility Management Entity inspection terminal local IP access connects closes and the identification information of target local IAD be consistent, if the consistent local access network of thinking that then terminal LIPA connects closes do not change, the LIPA of terminal connects unaffected; If the inconsistent local access network of thinking that then terminal LIPA connects closes change, the LIPA of terminal connects to be needed to discharge.The identification information that the local access network that the terminal local IP access connects closes is set up in terminal and is kept in the context when LIPA connects, and does not discharge when terminal enters Idle state.
When not carrying the identification information of target local IAD in the handoff request message, then the local IP access of terminal connects needs to discharge, can think that Target Wireless side network element do not support local IP access this moment, can think also no matter whether Target Wireless side network element supports local IP access, all need to discharge local IP access after the wireless side network element changes and connect.
Step 804, former Mobility Management Entity is to be the Mobility Management Entity of Terminal Service (being referred to as target mobility management entity) after terminal is selected to switch, and before target mobility management entity sends reorientation, change request message, change before this reorientation and carry the beared information that needs switching in the request message.According to the judged result of step 803, the terminal local IP access connects when needing to discharge, and changes the beared information that does not carry this connection in the request message before reorientation, in order to finish the release of losing efficacy and connecting.
Step 805, target mobility management entity sends re-positioning request to Target Wireless side network element.
Step 806 continues normal switching flow.
Step 807, former Mobility Management Entity are initiated LIPA to former local IAD and are connected PDP Context deletion flow process according to the judged result of step 803; This step can be carried out any time after step 803.
Step 808, terminal may be initiated the Routing Area Update flow process.
In the present embodiment, local access network closes and is L-GGSN.It is example explanation Mobility Management Entity when changing that present embodiment is positioned near wireless side network element or its with L-GGSN, the release flow process that the terminal local IP access connects.
Present embodiment judges that with former Mobility Management Entity whether influenced terminal LIPA connects is example, and similar with method shown in Figure 7, target mobility management entity also can be done this judgement, no longer describes in detail herein.
The processing method of other switching flow flow process therewith is similar, no longer describes in detail herein.
Fig. 8 a is the schematic flow sheet of eighth embodiment of the invention.Eighth embodiment of the invention be in the UTRAN system in the repositioning process another local IP access connect dispose procedure, in conjunction with the network diagram shown in Fig. 1 (a), Fig. 1 (b) and Fig. 1 (c), eighth embodiment of the invention mainly comprises the steps:
Step 801a, wireless side network element judge needs to initiate reorientation.
Step 802a, former wireless side network element sends handoff request message, the sign of carrying the Target Wireless side entity in this handoff request message to former Mobility Management Entity.If there is home base-station gateway, then this handoff request forwards is given home base-station gateway earlier, and then by home base-station gateway this handoff request message is issued former Mobility Management Entity.
Wherein, Mobility Management Entity is SGSN in the UTRAN system.
Step 803a, with step 503a, but message wherein is handoff request message.
Step 804a, target mobility management entity sends RELOCATION REQUEST message to Target Wireless side network element.
Step 805a, Target Wireless side network element respond and send the re-positioning request acknowledgement message, and carry target local IAD sign in this re-positioning request acknowledgement message.
Step 806a, with step 507a, but message wherein is the re-positioning request acknowledgement message.
Step 807a, target mobility management entity is changeed response message before Target Wireless side network element sends reorientation.According to the judged result of step 806a, the terminal local IP access connects when needing to discharge, and carries LIPA and connect the inefficacy indication information in this reorientation forward pass response message, and indication discharges LIPA and connects.
Step 808a, target mobility management entity is initiated the deleting load-bearing flow process for this LIPA connects.The wireless side network element is this LIPA reserved resource behind the deletion step 505a.
Step 809a-811a is identical with step 806-808 respectively.
In the embodiment shown in Fig. 5, Fig. 5 a, Fig. 8 and Fig. 8 a, the identification information of target local IAD can also be to be configured on the target mobility management entity, at this moment, adopts the embodiment flow process shown in Fig. 5 a and the 8a.In the flow process of this moment, target mobility management entity can judge directly whether the LIPA of terminal lost efficacy change request before receiving switching or this reorientation after, needs no longer also whether the wireless side network element is the LIPA reserved resource; Other steps are identical.
According to above the inventive method embodiment, the present invention proposes the delivery system embodiment that a kind of local IP access connects, be used for Mobility Management Entity and change the back and discharge the local IP access that lost efficacy and connect, this system comprises the former Mobility Management Entity of serving terminal before the change, wherein:
Former Mobility Management Entity is served target local IAD identification information or the Target Wireless side network element ID information or the target home base station gateway identification information of terminal after being arranged to obtain change, and whether effectively also discharges the local IP access connection of inefficacy according to the connection of identification information judgment local IP access.
According to above the inventive method embodiment, the invention allows for the delivery system embodiment that another kind of local IP access connects, be used for Mobility Management Entity and change the local IP access connection that the back discharges inefficacy, this system comprise the former Mobility Management Entity of serving terminal before the change and change after serve the target mobility management entity of terminal, wherein:
Target mobility management entity is arranged to obtain former local IAD identification information or the former wireless side network element ID information or the former home base-station gateway identification information of serving terminal before the change, and after going out local IP access and connect to lose efficacy according to identification information judgment, respond the local IP access indication of losing efficacy to former Mobility Management Entity by message;
Former Mobility Management Entity is arranged to discharge the local IP access that lost efficacy according to local IP access inefficacy indication and is connected.
More than two system embodiments, please edition with parallel text inventive method embodiment understand.
In order to simplify description, above embodiment is not only to exist home base-station gateway and local access network to close to be positioned at the wireless side entity or near the situation it is that example illustrates the method for releasing that local IP access is connected.Exist the situation of home base-station gateway similar with it.Certainly, there is home base-station gateway, and local access network closes when being positioned near wireless side entity or its, and the message between message between Mobility Management Entity and the wireless side entity and Mobility Management Entity and the local access network pass will be via the home base-station gateway transmission.When there being home base-station gateway, and local access network closes when being positioned near home base-station gateway or its, message between Mobility Management Entity and the wireless side entity will be via the home base-station gateway transmission, and the message between Mobility Management Entity and the local access network pass no longer needs home base-station gateway to transmit, and the identification information that newly-increased wireless side network element ID information of carrying needs home base-station gateway at this moment in the message replaces.In these cases, it is very similar to the foregoing description that local IP access connects the mode that discharges, and can not impact setting forth the present invention, so no longer be repeated in this description at this.
A kind of local IP access provided by the invention connects the system and method that discharges, and has solved the inefficacy that brings after Mobility Management Entity changes and has connected the problem how to discharge.In the flow process of the switching of LTE system or tracing section updating, the local access network that former Mobility Management Entity provides according to target mobility management entity closes or the identification information of wireless side network element or home base-station gateway, judge whether the LIPA connection lost efficacy, connect for the LIPA that lost efficacy, former Mobility Management Entity no longer sends to target mobility management entity with the beared information of this connection, and former Mobility Management Entity discharges this LIPA connection simultaneously.
Above embodiment not only can use and the base station from home system, is suitable for and the macro base station system too.The wireless side entity can be base station, base station from home or radio network controller (Radio Network Controller abbreviates RNC as) in the above-described embodiments.Mobility Management Entity can be MME, MSC or SGSN.It can be L-SGW, L-PGW or L-GGSN that local access network closes.The core net IAD can be S-GW or SGSN.
The wireless side network element of local IP access or home base-station gateway can to close the address identical with local access network.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Though the disclosed execution mode of the present invention as above, the execution mode that described content just adopts for the ease of understanding the present invention is not in order to limit the present invention.Technical staff in any the technical field of the invention; under the prerequisite that does not break away from the disclosed spirit and scope of the present invention; can do any modification and variation what implement in form and on the details; but scope of patent protection of the present invention still must be as the criterion with the scope that appending claims was defined.