CN102014452A - Method and system for implementing mobility of local IP (Internet Protocol) access connection - Google Patents
Method and system for implementing mobility of local IP (Internet Protocol) access connection Download PDFInfo
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Abstract
The invention discloses a method for implementing mobility of local IP (Internet Protocol) access connection, comprising the following steps that a new local service gateway judges whether the local IP access connection has the mobility or not according to the identification information of the original local access gateway, or the identification information of the original wireless network element/domestic base station gateway or the identification information of the original external local gateway of the local IP access connection provided by the mobility management entity of the current service user; the new local service gateway indicates the mobility management entity to carry out mobility processing on the local IP access connection according to a judged result. The invention also provides a system for implementing the mobility of the local IP access connection. The mobility is implemented on the local IP access connection through the method and the system.
Description
Technical field
The present invention relates to the local IP access technical field in the mobile communication, relate in particular to a kind of local IP access and connect mobility method and the system of realizing.
Background technology
Third generation partner program (3GPP, 3rd Generation Partnership Project) grouping system (EPS of evolution, Evolved Packet System) by the universal mobile telecommunications system land radio access web (E-UTRAN of evolution, Evolved Universal Terrestrial Radio Access Network), mobile management unit (MME, Mobility Management Entity), gateway (S-GW, Serving Gateway), grouped data network gateway (P-GW, Packet Data Network Gateway), home subscriber server (HSS, Home Subscriber Server), authentication and authorization charging (the AAA of 3GPP, Authentication, Authorization and Accounting) server, "Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) entity and other support nodes are formed.
The system architecture of EPS as shown in Figure 1a, MME is responsible for the associative operation of chains of command such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; IAD comprises S-GW and P-GW, and S-GW is the accessing gateway equipment that links to each other with E-UTRAN, transmits data between E-UTRAN and P-GW, and is responsible for pending datas such as paging are carried out buffer memory; P-GW then is the borde gateway of EPS and packet data network (PDN, Packet Data Network), is responsible for the access of PDN and transmits data etc. between EPS and PDN; The Authentication Authorization server comprises HSS, 3GPP AAA; PCRF is by receiving interface Rx and the Internet protocol (IP of operator, Internet Protocol) business network links to each other, obtain business information, in addition, PCRF links to each other with gateway device in the network by the Gx/Gxa/Gxc interface, is responsible for initiating the foundation of IP carrying, the service quality (QoS of assurance business datum, and the control of chargeing Quality of Service).
Base station from home is a kind of small-sized, lower powered base station, be deployed in indoor places such as family and office, main effect is in order higher service rate to be provided to the user and to reduce and use the needed expense of high rate services, remedying the deficiency that existing distributed cellular radio communication system covers simultaneously.
Base station from home can be directly connected to core net, also can be linked into core net by this logical ne of home base-station gateway.The major function of home base-station gateway is: the fail safe of checking base station from home, handle the registration of base station from home, and base station from home is carried out operation maintenance management, according to Carrier Requirements configuration and control base station from home, be responsible for the data of exchcange core net and base station from home.IAD can be S-GW, P-GW, Serving GPRS Support Node (SGSN, Serving GPRS Support Node), Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node).Local gateway can be local SGW (L-SGW, Local SGW), local PGW (L-PGW, Local PGW), virtual SGW (V-SGW, Virtual SGW), virtual PGW (V-PGW, Virtual PSGW), local GGSN (L-GGSN, Local GGSN), external L-GW.Shown in Fig. 1 b, 1c, local gateway can close with the wireless side network element and establish, and also can close with home base-station gateway and establish, can also be near wireless side network element or home base-station gateway (being external mode).
In order to realize local IP access (LIPA, Local IP Access) function, promptly user terminal (UE, User Equipment) inserts this locality of other IP devices of home network or internet, and EPS has set up local gateway.Setting up that local access network closes can provide providing powerful support for the local IP access technology, local gateway can and the wireless side network element close and establish or near the wireless side network element (promptly external), also can and home base-station gateway close and establish or be in (promptly external) near the base-station gateway.
As shown in Figure 2, Fig. 2 is the data flow path schematic diagram of local IP access and traditional IP core network visit in the mobile communications network framework, user for supporting local IP access can set up traditional IP core network visit data path and local IP access data path.For the connection of local IP access, to wireless side network element/home base-station gateway, to local access network pass (L-SGW, L-PGW), transfer of data is without core net again from UE for the local IP access data path.In order to realize that UE inserts this locality of other IP devices of home network or internet, can set up two connections, article one, the direct access internet of local IP access data path (the Internet LIPA connection), second local IP access data path is directly visited other IP devices of home network (home network LIPA connection).
After the user initiated business and connects, for improving user's experience, the Carrier Requirements network must can provide business continuance.Require user's connection to have mobility this moment, and promptly when connection had mobility, network can provide business continuance.
As shown in Figure 3, Fig. 3 represents in the mobile communications network framework, after UE moves, and the data flow path of local IP access and the visit of traditional IP core network.Because the particularity that local IP access connects (data flow is directly from wireless side network element/home base-station gateway transmission), after UE moved, the data flow of local IP access need be passed through new wireless side network element/home base-station gateway, new local service gateway and former local IAD.Wherein, former local IAD is positioned at former wireless side network element/home base-station gateway or in its vicinity external, and new local service gateway is positioned at new wireless side network element/home base-station gateway or in its vicinity external.Therefore, local IP access connects whether have mobility, depends on whether have interface between the two.Yet, also do not have solution can judge this relation in the prior art, so prior art can't realize the mobility that local IP access connects.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of local IP access to connect and realizes mobility method and system, with the mobility that realizes that local IP access connects.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of local IP access and connect the realization mobility method, this method comprises:
The identification information of the former local IAD that local internet protocol (IP) visit that new local service gateway provides according to current service user's Mobility Management Entity connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway judge described local IP access connects whether have mobility;
Described new local service gateway is indicated described Mobility Management Entity that local IP access is connected and is carried out the mobility processing according to judged result.
This method further comprises:
Described new local service gateway is with the identification information of the former local IAD of local IP access connection, the identification information that closes with the local access network that self allows to be connected compares, judge between described new local service gateway and the former local IAD whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between described new local service gateway and the former external local gateway whether have interface, connect whether have mobility to judge described local IP access.
Described identification information is address information or other special-purpose identification informations.
Described according to judged result, the mobility processing is carried out in connection to local IP access, is specially:
According to described judged result, when described local IP access connection had mobility, described Mobility Management Entity activated local IP access and connects; Otherwise described new local service gateway indication Mobility Management Entity discharges described local IP access and connects.
This method further comprises: when Mobility Management Entity changes, the identification information of the former local IAD that described local IP access connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway send to new Mobility Management Entity by former Mobility Management Entity.
This method further comprises: when Mobility Management Entity changes, when described local IP access connection does not have mobility, described new Mobility Management Entity indicates former Mobility Management Entity can't rebuild the local IP access connection, and described former Mobility Management Entity is initiated the carrying releasing operation of former wireless access gateway and former wireless service gateway.
This method further comprises: described new wireless side network element sends to described new Mobility Management Entity with the identification information of new local access network pass or the identification information or the new external local gateway identification information of new wireless side network element/home base-station gateway.
Described Mobility Management Entity is mobility management unit MME or moving exchanging center MSC or service universal grouping wireless Serving GPRS Support Node SGSN;
Described wireless side network element is base station or base station from home or radio network controller (RNC).
The present invention also provides a kind of local IP access to connect and has realized ambulant system, and this system comprises: Mobility Management Entity and new local service gateway, wherein,
Described Mobility Management Entity is used for providing the identification information of the former local IAD that local IP access connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway to described new local service gateway;
Described new local service gateway, the identification information of the former local IAD that provides according to described new Mobility Management Entity or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway are provided, judge described local IP access connects whether have mobility, and, indicate described Mobility Management Entity that local IP access is connected and carry out the mobility processing according to judged result.
Described identification information is address information or other special-purpose identification informations.
Described new local service gateway is further used for, the identification information of the former local IAD that local IP access is connected, the identification information that closes with the local access network that self allows to be connected compares, judge between described new local service gateway and the former local IAD whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between described new local service gateway and the former external local gateway whether have interface, connect whether have mobility to judge described local IP access.
Described new local service gateway is further used for, and according to described judged result, when Mobility Management Entity changes, when described local IP access connection has mobility, indicates described Mobility Management Entity to activate local IP access and connects; Otherwise, indicate described Mobility Management Entity to discharge described local IP access and connect.
A kind of local IP access provided by the present invention connects mobility method and the system of realizing, the identification information of the former local IAD that is provided according to new Mobility Management Entity by new local service gateway or the identification information of former wireless side network element/home base-station gateway are judged between new wireless side network element/home base-station gateway and the former local IAD or newly whether are had interface between wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway; New local service gateway is indicated new Mobility Management Entity that local IP access is connected and is carried out the mobility processing according to judged result.By method and system of the present invention, realized the mobility that local IP access connects, improved the service feature of system.
Description of drawings
Fig. 1 a is the system architecture schematic diagram one of EPS in the prior art;
Fig. 1 b is the system architecture schematic diagram two of EPS in the prior art;
Fig. 1 c is the system architecture schematic diagram three of EPS in the prior art;
Fig. 2 is the data flow diagram that local IP inserts in the prior art;
Fig. 3 moves the data flow diagram that the local IP in back inserts for UE in the prior art;
Fig. 4 realizes the mobility method flow chart for a kind of local IP access of the present invention connects;
Fig. 5 is the process chart one that the embodiment of the invention connects local IP in the service request process;
Fig. 6 is the process chart two that the embodiment of the invention connects local IP in the service request process;
Fig. 7 is the process chart one that the embodiment of the invention connects local IP in the tracing section updating process;
Fig. 8 is the process chart two that the embodiment of the invention connects local IP in the tracing section updating process.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
A kind of local IP access provided by the present invention connects realizes mobility method, and as shown in Figure 4, this method comprises:
Store in the new local service gateway that the local access network that self allows to connect closes or the identification information of wireless side network element/home base-station gateway or external local gateway, new local service gateway passes through the identification information with the former local IAD of local IP access connection, the identification information that closes with the local access network that self allows to be connected compares, judge between new local service gateway and the former local IAD whether have interface, and then judge local IP access connects whether have mobility; Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, and then judge local IP access connects whether have mobility; Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between new local service gateway and the former external local gateway whether have interface, and then judge local IP access connects whether have mobility.
In addition, the identification information of indication local access network pass or wireless side network element/home base-station gateway or external local gateway can be address information among the present invention, also can be other special-purpose identification informations.
According to judged result, when the local IP access connection had mobility, new local service gateway indication Mobility Management Entity activated local IP access and connects; Otherwise new local service gateway indication Mobility Management Entity discharges local IP access and connects.
It is to be noted, when Mobility Management Entity changes, the identification information of the former local IAD that local IP access connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway send to new Mobility Management Entity by former Mobility Management Entity.And when the local IP access connection did not have mobility, new Mobility Management Entity indicated former Mobility Management Entity can't rebuild the local IP access connection, and former Mobility Management Entity is initiated the carrying releasing operation of former wireless access gateway and former wireless service gateway.
Wireless side network element among the present invention can be base station, base station from home, radio network controller (RNC, Radio Network Controller).Mobility Management Entity can be mobile management unit (MME, Mobility Management Entity), mobile switching centre (MSC, Mobile Switching Centre), SGSN.Local gateway (local access network pass, local service gateway) can be L-SGW, L-PGW, L-GGSN, external L-GW.The IAD of core net can be S-GW, SGSN.
Below in conjunction with Fig. 5 and embodiment illustrated in fig. 6, above-mentioned local IP access is connected the realization mobility method further describe.Fig. 5 and Figure 6 shows that the flow chart that carries out service request procedure when UE is converted to connected state by Idle state in the LTE system.In this embodiment, local access network closes and is L-PGW, and the local service gateway is L-SGW, and flow process shown in Figure 5 specifically may further comprise the steps:
At first, when UE was idle, Mobility Management Entity need be preserved local gateway (L-PGW, L-SGW, the external L-GW) identification information that local IP connects, and can also preserve the identification information of the wireless side network element of local IP connection.Wherein, the identification information of L-PGW, L-SGW, external L-GW, wireless side network element can be an address information, also can be other special-purpose identification informations.
Step 501 has local IP access (LIPA) and connects behind the UE access to wireless communication system, after this UE enters Idle state.
Step 502, UE sends service request information through new wireless side network element to Mobility Management Entity.
Wherein, new wireless side network element can carry the identification information of new wireless side network element in the message that Mobility Management Entity sends, and can also carry the identification information of new local gateway (L-PGW, L-SGW).When local gateway adopts the mode of external L-GW, also need to carry the identification information of external L-GW.Mobility Management Entity is MME.
Step 504, Mobility Management Entity are that user's local IP access connects the new local service gateway of selection (new L-SGW), and set up request message to new L-SGW transmission session.Need in the message to carry the former wireless side network element that local IP access connects identification information or former local IAD (L-PGW) identification information, can carry the identification information of new wireless side network element simultaneously, can carry the LIPA indication.When former local IAD adopts the mode of external L-GW, need carry the identification information of the former L-GW of local IP access connection, can carry the identification information of new wireless side network element simultaneously, can carry the LIPA indication.
When the user carried out service request, if the wireless side network element does not change, promptly new wireless side network element was identical with former wireless side network element, and then Mobility Management Entity does not need to initiate this step, and continued normal service request flow process in the prior art.
Step 505 after new L-SGW receives message, judges according to the parameter of carrying in the message whether whether local IP connection can activate again, promptly have mobility after UE moves.
If what carry in the message is the former L-PGW identification information that local IP access connects, new L-SGW judges between new L-SGW and the former L-PGW whether have interface according to its L-PGW information that can connect and the identification information of former L-PGW.The information of the L-PGW that new L-SGW can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
If what carry in the message is the former wireless side network element ID information that local IP access connects, new L-SGW judges between new wireless side network element and the former wireless side network element whether have interface according to the wireless side network element that can connect and the identification information of former wireless side network element.The information of the wireless side network element that new wireless side network element can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
If what carry in the message is the former L-GW identification information that local IP access connects, new L-SGW judges between new L-SGW and the former L-GW whether have interface according to its L-GW information that can connect and the identification information of former L-GW.The information of the L-GW that new L-SGW can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
If have interface between new L-SGW and the former L-PGW, or there is interface between new wireless side network element and the former wireless side network element, or has interface between new L-SGW and the former L-GW, think that then the local IP access connection has mobility; Otherwise, think that the local IP access connection does not have mobility.
According to the judged result of step 505, when the local IP access connection did not have mobility, Mobility Management Entity is initiated local IP access and connected the release flow process, and was specific as follows:
Step 506, new local service gateway is responded session to Mobility Management Entity and is set up response message, needs to carry specific cause value (failure cause) in the message, and indication can't be set up local IP access and be connected.
It is pointed out that then no matter whether UE has mobility if the user exists core net to connect simultaneously, flow process is set up in the wireless side carrying that all needs to initiate the core net connection.Promptly no matter the local IP access of UE connects whether have mobility, does not influence the normal activation process that core net connects.
Figure 5 shows that the local IP access connection does not have ambulant situation, connect for local IP access to have ambulant processing that as shown in Figure 6, wherein, the operation of step 601～605 is identical with above-mentioned steps 501～505, repeats no more herein.According to the judged result of step 605, when the local IP access connection had mobility, Mobility Management Entity need be initiated the activation process that local IP access connects, and was specific as follows:
Step 606, new L-SGW responds session to Mobility Management Entity and sets up response message.
Step 607, Mobility Management Entity sends initial context to new wireless side network element and sets up request message.
Step 608, new wireless side network element is carried out radio bearer and is set up process.
Step 609, new wireless side network element is responded initial context foundation to Mobility Management Entity and is finished message.
Step 610 is set up between new L-SGW and the former L-SGW and is transmitted the tunnel.
Step 611, Mobility Management Entity is initiated the bearing modification flow process to new L-SGW, and new L-SGW and former L-PGW carry out the bearing modification flow process.
Step 612 triggers by timer, and Mobility Management Entity discharges flow process to former L-SGW initiation session.
Step 613 triggers by timer, and Mobility Management Entity is initiated to transmit the tunnel to former L-SGW and discharged flow process.
Step 614 triggers by timer, and Mobility Management Entity is initiated to transmit the tunnel to new L-SGW and discharged flow process.
It is pointed out that then no matter whether UE has mobility if the user exists core net to connect simultaneously, flow process is set up in the wireless side carrying that all needs to initiate the core net connection.Promptly no matter the local IP access of UE connects whether have mobility, does not influence the normal activation process that core net connects.
When the local IP access connection does not have mobility, be connected to example to discharge local IP access in the present embodiment, at this moment, also local IP access can be connected and transfer the core net connection to, this flow process is same as the prior art, repeats no more herein.After the paging of downlink data trigger network initiation to Idle state UE, UE can initiate the service request flow process and activate connection, and it is identical with flow processing shown in Figure 6 with Fig. 5 whether local IP access connection this moment activates, and repeats no more herein.
Again in conjunction with Fig. 7 and embodiment illustrated in fig. 8, above-mentioned local IP access is connected the realization mobility method further describe below.Fig. 7 and Figure 8 shows that the flow chart that carries out the tracing section updating process when UE is converted to connected state by Idle state in the LTE system.In this embodiment, local access network closes and is L-PGW, and the local service gateway is L-SGW, and flow process shown in Figure 7 specifically may further comprise the steps:
At first, when UE was idle, Mobility Management Entity need be preserved the identification information of the local gateway (L-PGW, L-SGW, external L-GW) of local IP connection, can also preserve the identification information of the wireless side network element of local IP connection.Wherein the identification information of L-PGW, L-SGW, L-GW, wireless side network element can be an address information, also can be other special-purpose identification informations.
Step 701 has local IP access and connects behind the UE access to wireless communication system, after this UE enters Idle state.
Step 703, new wireless side network element is selected the Mobility Management Entity (being referred to as new Mobility Management Entity) of current service for the user, and the tracing section updating request package is contained in initial user message/upstream message message transfer issues new Mobility Management Entity.
Wherein, new wireless side network element can carry new wireless side network element ID information in the message that Mobility Management Entity sends, can carry new local gateway (L-PGW, L-SGW) identification information.When local gateway adopts the mode of external L-GW, need carry the identification information of L-GW.The identification information of L-PGW, L-SGW, L-GW, new wireless side network element can be an address information, also can be other concrete identification informations.Mobility Management Entity is MME, and new Immobility management entity enters Idle state Mobility Management Entity (being referred to as former Mobility Management Entity) before with UE may be identical.
Step 704, when new Mobility Management Entity and former Mobility Management Entity were inequality, new Mobility Management Entity was initiated context to former Mobility Management Entity and is obtained flow process, sends context request.
Step 705, former Mobility Management Entity is included in user's contextual information in the context response information, issues new Mobility Management Entity.
If the user exists local IP access to connect, need to carry the identification information of the former wireless side network element that local IP access connects, the identification information of former L-PGW in the message.When local gateway adopts the mode of external L-GW, need carry the identification information of the former L-GW of local IP access connection.
Step 706, new Mobility Management Entity is initiated the authentication flow process to the user.This step is optional.
Step 707, new Mobility Management Entity is preserved the information of carrying in the step 705, and responds context acknowledgement message to former Mobility Management Entity.
Step 708, new Mobility Management Entity are that local IP access connects the new L-SGW of selection, and set up request message to new L-SGW transmission session.
Need in the message to carry the identification information of the former wireless side entity that local IP access connects, former L-PGW identification information, can carry the identification information of new wireless side entity simultaneously, can carry the LIPA indication.When local gateway adopts the mode of external L-GW, need carry the identification information of the former L-GW of local IP access connection, can carry the identification information of new wireless side entity simultaneously, can carry the LIPA indication.
When the user carries out the tracing section updating flow process, if the wireless side network element does not change, be that new wireless side network element is identical with former wireless side network element, then Mobility Management Entity does not need to initiate this step, and continues normal tracing section updating flow process in the prior art.
In addition, when the user existed core net to connect, new Mobility Management Entity also needed to initiate session foundation or the bearer update flow process that core net connects.
Step 709 after new L-SGW receives message, judges according to the parameter of carrying in the message whether whether local IP connection can activate again, promptly have mobility after terminal moves.
If what carry in the message is the identification information of the former L-PGW of local IP access connection, new L-SGW judges between new L-SGW and the former L-PGW whether have interface according to the identification information of its L-PGW that can connect and former L-PGW.The information of the L-PGW that new L-SGW can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
If what carry in the message is the identification information of the former wireless side network element of local IP access connection, new L-SGW judges between new wireless side network element and the former wireless side network element whether have interface according to the wireless side network element that can connect and the identification information of former wireless side network element.The information of the wireless side network element that new wireless side network element can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
If what carry in the message is the identification information of the former L-GW of local IP access connection, new L-SGW judges between new L-SGW and the former L-GW whether have interface according to the identification information of its L-GW that can connect and former L-GW.The information of the L-GW that new L-SGW can connect can local dispose, and also can be notified by other network element (as webmaster HMS).
There is interface if exist between new L-SGW and the former L-PGW to exist between interface or new L-SGW and the former L-GW between interface or new wireless side network element and the former wireless side network element, thinks that then the local IP access connection has mobility; Otherwise, think that the local IP access connection does not have mobility.
According to step 709 judged result, when the local IP access connection had mobility, new L-SGW need initiate the bearer update flow process that local IP access connects to former L-PGW.Specific as follows:
Step 710, new L-SGW and former L-PGW carry out bearer update.
Step 711, new L-SGW sends session to new Mobility Management Entity and sets up response message.
Step 712, new Mobility Management Entity is initiated more new technological process of position to the Authentication Authorization server.
Step 713, the Authentication Authorization server is initiated position deletion flow process to former Mobility Management Entity.
Step 714, in the Routing Area Update request that UE sends, do not carry activation marker, and when new Mobility Management Entity determined the carrying of excited users not, new Mobility Management Entity sent Routing Area Update and accepts message to UE, directly carries out the operation of subsequent step 719-721 then.Whether local IP access connected and to activate when treating that UE carries out service request according to Fig. 5 and flow processing shown in Figure 6 this moment.
When carrying activation marker in the Routing Area Update request that UE sends, perhaps do not carry activation marker in the Routing Area Update request that UE sends, but during the carrying of new Mobility Management Entity decision excited users, new Mobility Management Entity sends initial context to new wireless side network element and sets up request message, sends Routing Area Update simultaneously and accepts message.
Step 715, new wireless side network element are initiated wireless side carrying foundation operation after receiving message.
Step 716, after the wireless side carrying was set up and finished, new wireless side network element sent initial context to new Mobility Management Entity and sets up response message.
Step 717, new Mobility Management Entity is initiated the bearer update flow process to new L-SGW.
Step 718, new L-SGW and former L-PGW carry out the bearer update flow process.This step is optional.
Step 719～720, new wireless side network element sends Routing Area Update with new Mobility Management Entity and accepts forwards to UE.UE responds Routing Area Update and finishes message, and this is operating as optional.
Step 721 triggers by timer, and former Mobility Management Entity discharges flow process to former L-SGW initiation session.
Figure 7 shows that the local IP access connection has ambulant situation, connect for local IP access not have ambulant processing that as shown in Figure 8, wherein, the operation of step 801～809 is identical with above-mentioned steps 701～709, repeats no more herein.According to the judged result of step 809, when the local IP access connection does not have mobility, specifically handle as follows:
Step 810, new L-SGW sends session to new Mobility Management Entity and sets up response message, needs to carry specific cause value (failure cause) in the message, and indication can't be set up local IP access and be connected.
Step 811, new Mobility Management Entity sends the failure Indication message to former Mobility Management Entity, notifies former Mobility Management Entity can't rebuild local IP access and connects.
The operation of subsequent step 812～820 is identical with abovementioned steps 712～720, repeats no more herein.
Step 821, when new Mobility Management Entity passes through the failure indication in step 811, when notifying former Mobility Management Entity can't rebuild the local IP access connection, need notify former L-SGW to discharge the session of former L-PGW simultaneously at this step Central Plains Mobility Management Entity.When former Mobility Management Entity was identical with new Mobility Management Entity, former Mobility Management Entity knew that in step 810 can't rebuild local IP access connects, and this moment, former Mobility Management Entity also needed to notify former L-SGW to discharge the session of L-PGW.
It is pointed out that when the local IP access connection does not have mobility, be connected to example to discharge local IP access in the present embodiment, at this moment, also local IP access can be connected and transfer the core net connection to, this flow process and prior art are similar, repeat no more.
Embodiments of the invention all are applied to local IP access and connect, and do not influence core net and connect.When the user carried out service request or tracing section updating, core net connects to be handled according to prior art.And the wireless side network element/home base-station gateway of local IP access can to close the address identical with local access network.
In order to simplify description, above embodiment is that example illustrates local IP access connected and supports mobility method not exist home base-station gateway and local gateway to be positioned at wireless side entity or near the situation it only.Exist the situation of home base-station gateway similar with it.Certainly, have home base-station gateway, and local gateway is when being positioned near wireless side entity or its, message and the message between Mobility Management Entity and the local gateway between Mobility Management Entity and the wireless side entity will be via the home base-station gateway transmission.When there being home base-station gateway, and when local gateway is 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 Mobility Management Entity and and local gateway between message no longer need home base-station gateway to transmit, newly-increased wireless side network element ID information of carrying need be replaced by the identification information of home base-station gateway this moment in the message.In these cases, the mode that local IP access connection mobility is supported is similar to the above embodiments, repeats no more herein.
Realize that for realizing that above-mentioned local IP access connects mobility method, the present invention also provide a kind of local IP access to connect and realized ambulant system, this system comprises: Mobility Management Entity and new local service gateway.
Wherein, new Mobility Management Entity is used for providing the identification information of former local IAD or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway to new local service gateway.Described identification information is address information or other special-purpose identification informations.
New local service gateway, the identification information of the former local IAD that provides according to new Mobility Management Entity or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway are provided, judge local IP access connects whether have mobility, and, indicate new Mobility Management Entity that local IP access is connected and carry out the mobility processing according to judged result.
Concrete decision operation is: the identification information of the former local IAD that local IP access is connected, the identification information that closes with the local access network that self allows to be connected compares, judge between new local service gateway and the former local IAD whether have interface, and then judge local IP access connects whether have mobility; Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, and then judge local IP access connects whether have mobility; Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between new local service gateway and the former external local gateway whether have interface, and then judge local IP access connects whether have mobility.
Concrete mobility is treated to: when the local IP access connection had mobility, the indication Mobility Management Entity activated local IP access and connects; Otherwise the indication Mobility Management Entity discharges local IP access and connects.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (12)
1. a local IP access connects the realization mobility method, it is characterized in that this method comprises:
The identification information of the former local IAD that local internet protocol (IP) visit that new local service gateway provides according to current service user's Mobility Management Entity connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway judge described local IP access connects whether have mobility;
Described new local service gateway is indicated described Mobility Management Entity that local IP access is connected and is carried out the mobility processing according to judged result.
2. connect according to the described local IP access of claim 1 and realize mobility method, it is characterized in that this method further comprises:
Described new local service gateway is with the identification information of the former local IAD of local IP access connection, the identification information that closes with the local access network that self allows to be connected compares, judge between described new local service gateway and the former local IAD whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between described new local service gateway and the former external local gateway whether have interface, connect whether have mobility to judge described local IP access.
3. connect according to the described local IP access of claim 1 and realize mobility method, it is characterized in that described identification information is address information or other special-purpose identification informations.
4. connect according to each described local IP access in the claim 1 to 3 and realize mobility method, it is characterized in that described according to judged result, the mobility processing is carried out in connection to local IP access, is specially:
According to described judged result, when described local IP access connection had mobility, described Mobility Management Entity activated local IP access and connects; Otherwise described new local service gateway indication Mobility Management Entity discharges described local IP access and connects.
5. connect according to each described local IP access in the claim 1 to 3 and realize mobility method, it is characterized in that, this method further comprises: when Mobility Management Entity changes, the identification information of the former local IAD that described local IP access connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway send to new Mobility Management Entity by former Mobility Management Entity.
6. connect according to the described local IP access of claim 5 and realize mobility method, it is characterized in that, this method further comprises: when Mobility Management Entity changes, when described local IP access connection does not have mobility, described new Mobility Management Entity indicates former Mobility Management Entity can't rebuild the local IP access connection, and described former Mobility Management Entity is initiated the carrying releasing operation of former wireless access gateway and former wireless service gateway.
7. connect according to the described local IP access of claim 5 and realize mobility method, it is characterized in that this method further comprises: described new wireless side network element sends to described new Mobility Management Entity with the identification information of new local access network pass or the identification information or the new external local gateway identification information of new wireless side network element/home base-station gateway.
8. connect the realization mobility method according to claim 1 or 2 or 3 described local IP access, it is characterized in that described Mobility Management Entity is mobility management unit MME or moving exchanging center MSC or service universal grouping wireless Serving GPRS Support Node SGSN;
Described wireless side network element is base station or base station from home or radio network controller (RNC).
9. a local IP access connects the ambulant system of realization, it is characterized in that this system comprises: Mobility Management Entity and new local service gateway, wherein,
Described Mobility Management Entity is used for providing the identification information of the former local IAD that local IP access connects or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway to described new local service gateway;
Described new local service gateway, the identification information of the former local IAD that provides according to described new Mobility Management Entity or the identification information or the former external local gateway identification information of former wireless side network element/home base-station gateway are provided, judge described local IP access connects whether have mobility, and, indicate described Mobility Management Entity that local IP access is connected and carry out the mobility processing according to judged result.
10. connect according to the described local IP access of claim 9 and realize ambulant system, it is characterized in that described identification information is address information or other special-purpose identification informations.
11. connect the ambulant system that realizes according to the described local IP access of claim 9, it is characterized in that, described new local service gateway is further used for, the identification information of the former local IAD that local IP access is connected, the identification information that closes with the local access network that self allows to be connected compares, judge between described new local service gateway and the former local IAD whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, the identification information of former wireless side network element/home base-station gateway that local IP access is connected, compare with the identification information of the wireless side network element/home base-station gateway that self allows to be connected, judge between new wireless side network element/home base-station gateway and the former wireless side network element/home base-station gateway whether have interface, connect whether have mobility to judge described local IP access;
Perhaps, former external local gateway identification information with the local IP access connection, compare with the external local gateway identification information that self allows to insert, judge between described new local service gateway and the former external local gateway whether have interface, connect whether have mobility to judge described local IP access.
12. connect the ambulant system that realizes according to each described local IP access in the claim 9 to 11, it is characterized in that, described new local service gateway is further used for, according to described judged result, when Mobility Management Entity changes, when described local IP access connection has mobility, indicate described Mobility Management Entity to activate local IP access and connect; Otherwise, indicate described Mobility Management Entity to discharge described local IP access and connect.
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| CN102014452B (en) | 2014-06-11 |
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