CN102111748B - Method and system for establishing local internet protocol (IP) connection - Google Patents
Method and system for establishing local internet protocol (IP) connection Download PDFInfo
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- CN102111748B CN102111748B CN200910266004.3A CN200910266004A CN102111748B CN 102111748 B CN102111748 B CN 102111748B CN 200910266004 A CN200910266004 A CN 200910266004A CN 102111748 B CN102111748 B CN 102111748B
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- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
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Abstract
The invention discloses a method and system for establishing a local internet protocol (IP) connection. The method comprises the following steps: switching a user terminal from a source base station to a target base station; releasing the local IP connection, passing from the target base station to a first local gateway, of the user terminal; and establishing the local IP connection, passing from the target base station to a second local gateway, of the user terminal. According to the invention, the problem that after moving, the user is still connected to the previous local gateway under the condition of accessing different base stations so as to cause a non-optimized route is solved, thereby reducing the consumption of network resources and the delay of user data transmission and improving the user experience.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of local IP, connect method for building up and system.
Background technology
Mobile communications network comprises base station sub-system, Mobility Management Entity, core net gateway and home subscriber server, and in correlation technique, the annexation of mobile communications network as shown in Figure 1.Mobility Management Entity is responsible for the related work of the chains of command such as the processing of mobile management, Non-Access Stratum signaling and the contextual management of user's mobile management; Core net gateway comprises gateway (Serving Gateway, S-GW) and grouped data network gateway (Packet DataNetwork Gateway, referred to as P-GW), S-GW is universal mobile telecommunications system land radio access web (the Evolved Universal Terrestrial Radio AccessNetwork with evolution, referred to as E-UTRAN) connected accessing gateway equipment, forwarding data between E-UTRAN and P-GW, and be responsible for the pending datas such as paging to carry out buffer memory; P-GW is grouping system (the Evolved Packet System of evolution, referred to as EPS) and packet data network (Packet Data Network, referred to as PDN) borde gateway, be responsible for the access of PDN and the function such as forwarding data between EPS and PDN.
Except supporting the access of mobile core network, mobile communication system also can be supported local IP access function, in base station, possess under the condition of local IP access ability and the signing permission of user local IP access, can realize this locality access of terminal to other IP devices in home network or the Internet.In mobile communications network, can be by setting up local gateway (Local Gateway, referred to as L-GW) so that the support to local IP access technology to be provided, L-GW can be local S-GW (Local S-GW, referred to as L-SGW) and local P-GW (Local P-GW, referred to as L-PGW), can be also independent L-PGW, local gateway can close and establish with base station.For universal terrestrial access network (UniversalTerrestrial Radio Access Network, UTRAN) system, L-GW can be local gateway GPRS Support Node (Local Gateway GPRS Support Node, referred to as L-GGSN) and local service GPRS Support Node (Local Serving GPRSSupport Node, referred to as L-SGSN), can be also independent L-GGSN.
Base station sub-system can be wireless access (Universal Terrestrial Radio Access on the base station (eNodeB) of the evolution of E-UTRAN and global land, referred to as UTRAN)/global system for mobile communications Radio Access Network (the GSM EDGE Radio AccessNetwork that strengthens, referred to as GERAN) radio network controller (RNC)/base station controller (BSC), or Home eNodeB (HNB/HeNB) and femto gateway (HNBGW/HeNB GW).When existing in the situation of femto gateway, local gateway not only can close and establish with Home eNodeB, also can close and establish with femto gateway, and in addition, femto gateway can also close and establish with Home eNodeB.
In correlation technique, under the above-mentioned network architecture, when user is connected to network, base station can be established to for user the connection of local gateway L-GW1, and be IP address of this user assignment, when user is moved, during from source base station access target BS, in correlation technique, also need target BS to be connected to L-GW1.Inventor finds, the geographic range that can cover due to L-GW1 is limited, and this user's geographical position is moved, will target BS being connected to L-GW1 very easily causes user's route not optimized, thereby cause the increase of the delay of unnecessary network resource consumption and user data transmission, affected user's experience.
Summary of the invention
Main purpose of the present invention is to provide a kind of local IP to connect method for building up and system, to solve after user is being moved, under access different base station, is still connected to the problem that previous local gateway causes route not optimized.
According to an aspect of the present invention, provide a kind of local IP to connect method for building up, having comprised: user terminal is switched to target BS from source base station; Releasing user terminal connects to the local IP between the first local gateway via target BS, and the local IP to the second local gateway connects via target BS to set up user terminal.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and set up before user terminal connects to the local IP of the second local gateway via target BS, said method also comprises: determine that target BS does not meet predetermined condition to the route between the first local gateway, and the second local gateway that the route between existence and target BS conforms to a predetermined condition, wherein, predetermined condition comprises: the current location of the user terminal under target BS is within the predetermined territorial scope of local gateway.
Preferably, determine that target BS does not meet predetermined condition to the route between the first local gateway, and the second local gateway that the route between existence and target BS conforms to a predetermined condition comprises: Mobility Management Entity obtains the current location of user terminal; Mobility Management Entity determines that the current location of user terminal is outside the predetermined territorial scope of the first local gateway, and determines the second local gateway conforming to a predetermined condition in the local gateway being connected with target BS; Or, target BS is determined the second local gateway conforming to a predetermined condition, and the IP address of the second local gateway is sent to Mobility Management Entity, Mobility Management Entity judges that the IP address of the second local gateway is different with the IP address of the first local gateway, determines that the first local gateway does not meet predetermined condition.
Preferably, the current location that Mobility Management Entity obtains user terminal comprises: the user terminal in Idle state moves in the region of target BS covering, and the current location tracking area carrying in the air interface broadcast of judgement from target BS is not in the tracking area list from Mobility Management Entity, user terminal initiating updating of tracking area request, target BS carries the current location information of user terminal in tracing section updating request, and is sent to Mobility Management Entity; Or the user terminal in connected state moves in the region of target BS covering, carry out switching across the interface X2 between base station, target BS is sent to Mobility Management Entity by the current location of user terminal; Or the user terminal in connected state moves in the region that target BS covers, carry out across base station and gateway between interface S1 switch, source base station is sent to Mobility Management Entity by the current location of user terminal.
Preferably, after Mobility Management Entity obtains the current location of user terminal, said method also comprises: the information of target BS the second local gateway is sent to Mobility Management Entity, and wherein, the second local gateway is pre-configured by target BS.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and the local IP connection to the second local gateway comprises via target BS to set up user terminal: Mobility Management Entity initiates to set up session request to the second local gateway, wherein, set up session request and carry the APN that user terminal is connected with PDN between the first local gateway; The second local gateway sends and sets up session reply to Mobility Management Entity, wherein, sets up session reply and carries the IP address that the second local gateway is user terminal distribution; Mobility Management Entity initiates to delete session request to the first local gateway.
Preferably, determine that target BS does not meet predetermined condition to the route between the first local gateway and comprises: the first local gateway receives the current location of user terminal from Mobility Management Entity, the first local gateway checks that the current location of user terminal exceeds the presumptive address scope of the first local gateway; Releasing user terminal connects and comprises to the local IP between the first local gateway via target BS: the first local gateway sends after deleting bearing request to Mobility Management Entity, Mobility Management Entity sends deleting bearing to the first local gateway and replys, wherein, the cause value of deleting bearing request is cancelled as UE provides service for the first local gateway, and indicates UE to reconnect; The local IP connection to the second local gateway comprises via target BS to set up user terminal: Mobility Management Entity sends to the second local gateway the session request of setting up, the second local gateway sends and sets up session reply to Mobility Management Entity, wherein, set up session request and carry the APN that user terminal is connected with PDN between the first local gateway, set up session and reply that to carry the second local gateway be the IP address that user terminal distributes.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and set up user terminal via target BS after the local IP of the second local gateway connects, said method also comprises: by the second local gateway, be that user terminal is handed down in the IP address that user terminal distributes.
Preferably, by the second local gateway be IP address that user terminal distributes be handed down to user terminal comprise following one of at least: Mobility Management Entity sends to user terminal the TAU that carries the IPv4 address that promising user terminal distributes and receives message and/or non-access layer information, and user terminal is accepted IPv4 address; The first predetermined gateway sends the routing broadcast of the IPv6 address prefix that carries promising user terminal distribution to user terminal, user terminal is accepted IPv6 address prefix; The first predetermined gateway sends IPv4 address by DHCPv4 address allocation procedure to user terminal, and user terminal is accepted IPv4 address.
According to a further aspect in the invention, provide a kind of local IP to connect the system of setting up, comprise: release module, in the situation that user terminal is switched to target BS from source base station, releasing user terminal connects to the local IP between the first local gateway via target BS; Set up module, for setting up user terminal, via target BS, the local IP to the second local gateway connects.
By the present invention, employing is in the situation that user terminal is switched to target BS from source base station, for user terminal, set up via target BS and connect to the IP between other local gateways, solved after user is being moved, under access different base station, be still connected to the problem that previous local gateway causes route not optimized, reduce the consumption of Internet resources and the delay of user data transmission, improved user's experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of the mobile communications network framework of correlation technique;
Fig. 2 connects the flow chart of method for building up according to the local IP of the embodiment of the present invention;
Fig. 3 is the detail flowchart that the local IP of the example 1 according to the present invention connects method for building up;
Fig. 4 is the detail flowchart that the local IP of the example 2 according to the present invention connects method for building up;
Fig. 5 connects the structured flowchart of the system of setting up according to the local IP of the embodiment of the present invention.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of local IP to connect method for building up, and Fig. 2 connects the flow chart of method for building up according to the local IP of the embodiment of the present invention, and as shown in Figure 2, the method comprises:
Step S202, user terminal is switched to target BS from source base station;
Step S204, releasing user terminal connects to the local IP between the first local gateway via target BS, and the local IP to the second local gateway connects via target BS to set up user terminal.
Pass through said method, make be moved and carried out after the switching of base station at user terminal, the target BS that is connected to the first local gateway in handoff procedure is changed into and is connected to the second local gateway, (this second local gateway is different from local gateway that this user terminal connects before switching, the first local gateway), there is very significantly difference with the method that will target BS in prior art be connected to the gateway that this user terminal is connected before switching, the method has solved after user is being moved, under access different base station, be still connected to the problem that previous local gateway easily causes route not optimized.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and set up before user terminal connects to the local IP of the second local gateway via target BS, determine that target BS does not meet predetermined condition to the route between the first local gateway, and the second local gateway that the route between existence and target BS conforms to a predetermined condition, wherein, predetermined condition comprises: the current location of the user terminal under target BS is within the predetermined territorial scope of local gateway.
By above-mentioned method, guaranteed that the second local gateway being connected with target BS can have more optimal route than the first original local gateway, thereby better for user terminal provides service.It should be noted that, (the route that said process is intended between definite the first local gateway and target BS is not optimized, quality of connection is relatively poor), and the route between definite and target BS is optimized (than the first above-mentioned local gateway and the route between target BS, more optimizing), to adopt to judge whether that the mode that meets predetermined condition determines in the present embodiment, but in actual applications, also can adopt other mode, as, relatively the modes such as jumping figure of route are determined.
Preferably, determine that target BS does not meet predetermined condition to the route between the first local gateway, and the second local gateway that the route between existence and target BS conforms to a predetermined condition comprises: Mobility Management Entity obtains the current location of user terminal; Mobility Management Entity determines that the current location of user terminal is outside the predetermined territorial scope of the first local gateway, and determines the second local gateway conforming to a predetermined condition in the local gateway being connected with target BS; Or, target BS is determined the second local gateway conforming to a predetermined condition, and the IP address of the second local gateway is sent to Mobility Management Entity, Mobility Management Entity judges that the IP address of the second local gateway is different with the IP address of the first local gateway, determines that the first local gateway does not meet predetermined condition.Mobility Management Entity determines that the mode that target BS does not meet predetermined condition to the route between the first local gateway includes but not limited to above two kinds.
Preferably, the current location that Mobility Management Entity obtains user terminal comprises: the user terminal in Idle state moves in the region of target BS covering, and the current location tracking area carrying in the air interface broadcast of judgement from target BS is not in the tracking area list from Mobility Management Entity, user terminal initiating updating of tracking area request, target BS carries the current location information of user terminal in tracing section updating request, and is sent to Mobility Management Entity; Or the user terminal in connected state moves in the region of target BS covering, carry out switching across the interface X2 between base station, target BS is sent to Mobility Management Entity by the current location of user terminal; Or the user terminal in connected state moves in the region that target BS covers, carry out across base station and gateway between interface S1 switch, source base station is sent to Mobility Management Entity by the current location of user terminal.
In actual applications, other modes that Mobility Management Entity also can take to be different from above-mentioned three kinds of modes are obtained the current location of user terminal, and the embodiment of the present invention is not construed as limiting this.
Preferably, after Mobility Management Entity obtains the current location of user terminal, the information of target BS the second local gateway is sent to Mobility Management Entity, and wherein, the second local gateway is pre-configured by target BS.
In this embodiment, by target BS, by pre-configured having compared with the information of the second local gateway of route optimization in self, notify Mobility Management Entity, can omit the process of searching the second local gateway, saved the resource of system.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and the local IP connection to the second local gateway comprises via target BS to set up user terminal: Mobility Management Entity initiates to set up session request to the second local gateway, wherein, set up session request and carry the APN that user terminal is connected with PDN between the first local gateway; The second local gateway sends and sets up session reply to Mobility Management Entity, wherein, sets up session reply and carries the IP address that the second local gateway is user terminal distribution; Mobility Management Entity initiates to delete session request to the first local gateway.
In said process, be to determine that at Mobility Management Entity the first local gateway does not meet predetermined condition, and determined and exist after the second local gateway conforming to a predetermined condition, initiate release connection process and be connected process of establishing.As another optional execution mode, also can determine that the first local gateway does not meet predetermined condition by the first local gateway, and notify Mobility Management Entity to initiate Connection Release, by Mobility Management Entity, determine the second local gateway again, and then carry out new connection and set up, its detailed process is as follows:
Determine that target BS does not meet predetermined condition to the route between the first local gateway and comprises: the first local gateway receives the current location of user terminal from Mobility Management Entity, the first local gateway checks that the current location of user terminal exceeds the presumptive address scope of the first local gateway;
Releasing user terminal connects and comprises to the local IP between the first local gateway via target BS: the first local gateway sends after deleting bearing request to Mobility Management Entity, Mobility Management Entity sends deleting bearing to the first local gateway and replys, wherein, the cause value of deleting bearing request is cancelled as UE provides service for the first local gateway, and indicates UE to reconnect;
The local IP connection to the second local gateway comprises via target BS to set up user terminal: Mobility Management Entity sends to the second local gateway the session request of setting up, the second local gateway sends and sets up session reply to Mobility Management Entity, wherein, set up session request and carry the APN that user terminal is connected with PDN between the first local gateway, set up session and reply that to carry the second local gateway be the IP address that user terminal distributes.
Preferably, releasing user terminal connects to the local IP between the first local gateway via target BS, and set up user terminal via target BS after the local IP of the second local gateway connects, by the second local gateway, be that user terminal is handed down in the IP address that user terminal distributes.
Above-mentioned by the second local gateway be process that user terminal is handed down in IP address that user terminal distributes can comprise following one of at least:
(1) TAU that Mobility Management Entity sends the IPv4 address of carrying promising user terminal distribution to user terminal receives message and/or non-access layer information, and user terminal is accepted IPv4 address;
(2) first predetermined gateways send the routing broadcast of the IPv6 address prefix that carries promising user terminal distribution to user terminal, user terminal is accepted IPv6 address prefix;
(3) first predetermined gateways send IPv4 address by DHCPv4 address allocation procedure to user terminal, and user terminal is accepted IPv4 address.
It should be noted that, above-mentioned source base station can comprise: Home eNodeB or radio network controller (Radio Network Controller, referred to as RNC), and target BS can comprise: Home eNodeB or RNC; The first local gateway can comprise: local access network pass, local service gateway, core net IAD or core net gateway, and the second local gateway can comprise: local access network pass, local service gateway, core net IAD or core net gateway; Mobility Management Entity is: mobile management unit (Mobility ManagementEntity, referred to as MME), (the Mobile Switching Centre of mobile switching centre, referred to as MSC) or serving general radio packet service support node (Serving GPRSSupport Node, referred to as SGSN), wherein, it can be L-PGW, L-GGSN that local access network closes, and local service gateway can be L-SGW, L-SGSN.Core net IAD can be P-GW, GGSN, and core net gateway can be S-GW, SGSN.In addition, the base station of local IP access can to close address identical with local access network.
The method by instantiation, the embodiment of the present invention being provided below in conjunction with accompanying drawing is described in further detail.
Example 1
This example be take Mobility Management Entity and is elaborated as MME as example, and Fig. 3 is the detail flowchart that the local IP of the example 1 according to the present invention connects method for building up, and as shown in Figure 3, the method comprises the following steps:
Step 301:UE is connected to network (gateway is L-GW1 or PGW1) and is carried out local IP access by base station sub-system (that is, base station, is designated as (H) eNB1);
Step 302:UE moves under (H) eNB2 covering, and MME gets the current location of UE.The mode of specifically obtaining position can be one of following three kinds of modes:
Step 302a:UE moves under (H) eNB2 covering, when UE is during in Idle state, the air interface broadcast that UE sends from base station, monitor current residing position tracking area (Tracking Area, referred to as TA) TA List (TA list) that MME does not send in step 301, UE initiating updating of tracking area request (Tracking Area UpdateRequest, referred to as TAU Request), wherein when forwarding TAU message, (H) eNB2 increases the current positional information of user in TAU message, as CGI (cell id)/TAI etc., and issue MME;
Alternatively, when forwarding TAU message, MME is issued in the IP address of the gateway L-GW2/P-GW2 with route optimization that (H) eNB2 can configure oneself.
Step 302b.UE moves under (H) eNB2 covering, when UE is during in connected state, switch, if what occur is to switch across the interface X2 between base station, now by subsystem of objective base station ((H) eNB2) by the current residing position informing MME of user;
Alternatively, (H) eNB2 can issue MME by the IP address of the gateway L-GW2/P-GW2 with route optimization of oneself configuration;
Step 302c.UE moves under (H) eNB2 covering, when UE is during in connected state, switch, if occur be across base station and S-GW between interface S1 switch, now by source base station subsystem ((H) eNB1) by the current residing position informing MME of user;
Alternatively, (H) eNB2 can issue MME by the IP address of the gateway L-GW2/P-GW2 with route optimization of oneself configuration.
Except above-mentioned three kinds of situations, in the service request process that MME can also initiate at UE, get user's positional information, do not repeat them here.
In above-mentioned steps 202, UE move to (H) eNB2 cover lower after, can be switched to (H) eNB2 from (H) eNB1, now, according to flow process of the prior art, can set up UE by being connected between (H) eNB2 and L-GW1 or PGW1.
Step 303:MME is according to the base station position information of the current connection of UE getting from step 302, find the L-GW2/P-GW2 of the routing optimality that this base station (or this position) is connected to, the gateway L-GW1/P-GW1 of the current connection of judgement UE (being specially UE current by (H) eNB2 connection) is not the gateway of routing optimality; Or the IP address of the IP address of the gateway L-GW2/P-GW2 sending according to (H) eNB2 and the gateway L-GW1/P-GW1 of the current connection of UE is different, the gateway of the current connection of judgement UE is not the gateway of routing optimality;
According to above-mentioned judgement, MME initiates to set up session request to gateway L-GW2/P-GW2, wherein carry the APN (Access Point Name, referred to as APN) that UE had previously been connected to the PDN connection of gateway L-GW1/P-GW1, request is set up a PDN to above-mentioned APN and is connected;
Step 304, gateway L-GW2/P-GW2 sends and sets up session reply to MME, wherein carries the new IP address of distributing into this UE, that is, and IPv4 address and/or IPv6 address prefix;
Step 305:MME initiates to delete session request, and this UE having connected is deleted to the connection session of gateway L-GW1/P-GW1 via (H) eNB2;
Step 306, new this UE of IP address notification that L-GW2/P-GW2 is distributed for this UE, concrete, can take following mode one of at least to notify:
Step 306a: this step can be the TAU process that MME completes UE, sends TAU and receives message to UE, is wherein included as the new IPv4 address that this UE distributes, and UE accepts this address; Can also be other NAS (Non-Access Stratum) message that MME issues UE, be included as the new IPv4 address that this UE distributes in message, UE accepts this address;
Step 306b: gateway L-GW1/P-GW1 sends routing broadcast (ROUTERADVERTISEMENT) to UE, is wherein included as the new IPv6 address prefix that this UE distributes, and UE accepts this address prefix;
Step 306c: gateway L-GW1/P-GW1 can pass through DHCPv4 address allocation procedure, and UE is issued in new IPv4 address, and UE accepts this address.
Example 2
Fig. 4 is the detail flowchart that the local IP of the example 2 according to the present invention connects method for building up, as shown in Figure 4, specifically comprises the following steps:
Step 401, UE, under (H) eNB1 covers, initiates to adhere to request or PDN connection foundation request to MME;
Step 402, MME carries out gateway and selects, and sends and set up session request to the gateway L-GW1/P-GW1 selecting, and take and asks gateway to connect as this UE sets up PDN;
Step 403, gateway sends and sets up session reply to MME, wherein carry mobile station information and change report action (beginning) (MS Info Change Reporting Action (Start)), be used to indicate MME and need to report the latest position of UE when the position of UE changes;
Step 404, MME sends to adhere to UE and receives or PDN connection foundation receiving;
Step 405 is identical with step 302;
Step 406, MME changes report action (beginning) according to the mobile station information of receiving in step 403, latest position CGI/TAI to gateway L-GW1/P-GW1 report UE, this report can be to issue in the signaling of gateway at the MME that needs of other flow processs, or one special in reporting the report signaling message of the latest position of UE;
Step 407, according to the UE latest position (CGI/TAI) of receiving in step 406, the regional extent with route optimization that can serve that gateway inspection self is preserved, find that this position is not in above-mentioned zone, determine no longer for this UE provides service, to MME, send deleting bearing request, wherein carry cause value for no longer reconnecting for this UE provides service and indication UE;
Step 408, MME sends deleting bearing to gateway L-GW1/P-GW1 and replys;
Step 409, MME is that the above-mentioned PDN of UE connects execution PDN GW selection again, find gateway L-GW2/P-GW2 and can provide the service that is connected to above-mentioned PDN for this UE, to gateway L-GW2/P-GW2, send and set up session request, wherein carry the APN that above-mentioned PDN is corresponding;
Step 410, gateway L-GW2/P-GW2 replys and sets up session reply to MME, is wherein included as the new IP address that this UE distributes, and this address can be IPv4 address and/or IPv6 address prefix;
Step 411, new this UE of IP address notification that L-GW2/P-GW2 is distributed for this UE, concrete, one of at least the notifying in 306a, 306b and 306c of can taking steps.
Above embodiment be take situation that current E-UTRAN system do not exist femto gateway and is described as example, but, said method is also applicable to exist the situation of femto gateway, now can be using Home eNodeB and femto gateway unification as base station or base station sub-system; In addition to be also applicable to Home eNodeB subsystem and the base station sub-system of UTRAN/GERAN be macro base station scene to the method, and now Mobility Management Entity is SGSN, does not repeat them here.
In above example 1 and example 2, network moves to target BS monitoring user, and in the situation that this target BS is not optimized with the route between the gateway being previously connected, discharging the gateway previously having connected is connected with the local IP between user, and the local IP setting up between the gateway of user and routing optimality is connected, the new gateway connecting is the IP address that user assignment is new afterwards, and network side is by this IP address notification to user, and user accepts this IP address and utilizes this IP address to carry out local IP access.
The embodiment of the present invention also provides a kind of local IP to connect the system of setting up, Fig. 5 connects the structured flowchart of the system of setting up according to the local IP of the embodiment of the present invention, as shown in Figure 5, this system comprises: release module 52, for in the situation that user terminal is switched to target BS from source base station, releasing user terminal connects to the local IP between the first local gateway via target BS; Set up module 54, for setting up user terminal, via target BS, the local IP to the second local gateway connects.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. local IP connects a method for building up, it is characterized in that, comprising:
User terminal is switched to target BS from source base station;
Discharge described user terminal and connect to the local IP between the first local gateway via described target BS, and the local IP to the second local gateway connects via described target BS to set up described user terminal;
Wherein, discharging described user terminal connects to the local IP between the first local gateway via described target BS, and set up before described user terminal connects to the local IP of the second local gateway via described target BS, described method also comprises: determine that described target BS does not meet predetermined condition to the route between described the first local gateway, and the route between existence and described target BS meets the second local gateway of described predetermined condition, wherein, described predetermined condition comprises: the current location of the described user terminal under described target BS is within the predetermined territorial scope of local gateway,
Wherein, determine that described target BS does not meet predetermined condition to the route between described the first local gateway, and the second local gateway that the route between existence and described target BS meets described predetermined condition comprises: Mobility Management Entity obtains the current location of described user terminal, described target BS is determined described the second local gateway that meets described predetermined condition, and the IP address of described the second local gateway is sent to described Mobility Management Entity, described Mobility Management Entity judges that the IP address of described the second local gateway is different with the IP address of described the first local gateway, determine that described the first local gateway does not meet described predetermined condition, or, determine that described target BS does not meet predetermined condition to the route between described the first local gateway and comprises: described the first local gateway receives the current location of described user terminal from Mobility Management Entity, described the first local gateway checks that the described current location of described user terminal exceeds the predetermined territorial scope of described the first local gateway.
2. method according to claim 1, is characterized in that, the current location that described Mobility Management Entity obtains described user terminal comprises:
Described user terminal in Idle state moves in the region of described target BS covering, and the current location tracking area carrying in the air interface broadcast of judgement from described target BS is not in the tracking area list from described Mobility Management Entity, described user terminal initiating updating of tracking area request, described target BS carries the current location information of described user terminal in described tracing section updating request, and is sent to described Mobility Management Entity; Or,
Described user terminal in connected state moves in the region of described target BS covering, carries out switching across the interface X2 between base station, and described target BS is sent to described Mobility Management Entity by the current location of described user terminal; Or,
Described user terminal in connected state moves in the region that described target BS covers, carry out across base station and gateway between interface S1 switch, described source base station is sent to described Mobility Management Entity by the current location of described user terminal.
3. method according to claim 1, is characterized in that, after described Mobility Management Entity obtains the current location of described user terminal, described method also comprises:
Described target BS is sent to described Mobility Management Entity by the information of described the second local gateway, and wherein, described the second local gateway is pre-configured by described target BS.
4. method according to claim 1, it is characterized in that, discharges described user terminal and connect to the local IP between the first local gateway via described target BS, and the local IP connection to the second local gateway comprises via described target BS to set up described user terminal:
Described Mobility Management Entity initiates to set up session request to described the second local gateway, wherein, describedly sets up session request and carries the APN that described user terminal is connected with PDN between described the first local gateway;
Described the second local gateway sends and sets up session and reply to described Mobility Management Entity, wherein, describedly sets up session and replys that to carry described the second local gateway be the IP address that described user terminal distributes;
Described Mobility Management Entity initiates to delete session request to described the first local gateway.
5. method according to claim 1, it is characterized in that, at definite described target BS, to the route between the first local gateway, do not meet predetermined condition and comprise that described the first local gateway receives the current location of described user terminal from Mobility Management Entity, described the first local gateway checks that the described current location of described user terminal exceeds in the situation of predetermined territorial scope of described the first local gateway
Discharging described user terminal connects and comprises to the local IP between described the first local gateway via described target BS: described the first local gateway sends after deleting bearing request to described Mobility Management Entity, described Mobility Management Entity sends deleting bearing to described the first local gateway and replys, wherein, the cause value of described deleting bearing request is cancelled as described user terminal provides service for described the first local gateway, and indicates described user terminal to reconnect;
The local IP connection to described the second local gateway comprises via described target BS to set up described user terminal: described Mobility Management Entity sends to described the second local gateway the session request of setting up, described the second local gateway sends and sets up session reply to described Mobility Management Entity, wherein, describedly set up session request and carry the APN that described user terminal is connected with PDN between described the first local gateway, describedly set up session and reply that to carry described the second local gateway be the IP address that described user terminal distributes.
6. method according to claim 1, it is characterized in that, discharging described user terminal connects to the local IP between the first local gateway via described target BS, and set up described user terminal via described target BS after the local IP of the second local gateway connects, described method also comprises:
By described the second local gateway, be that described user terminal is handed down in the IP address that described user terminal distributes.
7. method according to claim 6, is characterized in that, by described the second local gateway be IP address that described user terminal distributes be handed down to described user terminal comprise following one of at least:
The TAU that described Mobility Management Entity sends the IPv4 address of carrying promising described user terminal distribution to described user terminal receives message and/or non-access layer information, and described user terminal is accepted described IPv4 address;
Described the first local gateway sends the routing broadcast of the IPv6 address prefix that carries promising described user terminal distribution to described user terminal, described user terminal is accepted described IPv6 address prefix;
Described the first local gateway sends IPv4 address by DHCPv4 address allocation procedure to described user terminal, and described user terminal is accepted described IPv4 address.
8. a system is set up in local IP connection, it is characterized in that, comprising:
Release module, in the situation that user terminal is switched to target BS from source base station, discharges described user terminal and connects to the local IP between the first local gateway via described target BS;
Set up module, for setting up described user terminal, via described target BS, the local IP to the second local gateway connects;
Described local IP connect the system of setting up also for: described release module discharge that described user terminal connects to the local IP between described the first local gateway via described target BS and described set up module set up described user terminal via described target BS to before the local IP connection of described the second local gateway, determine that described target BS does not meet predetermined condition to the route between described the first local gateway, and the route between existence and described target BS meets the second local gateway of described predetermined condition, wherein, described predetermined condition comprises: the current location of the described user terminal under described target BS is within the predetermined territorial scope of local gateway,
Wherein, described local IP connects the system of setting up for determining that in the following manner described target BS does not meet predetermined condition to the route between described the first local gateway, and the route between existence and described target BS meets the second local gateway of described predetermined condition: Mobility Management Entity obtains the current location of described user terminal, described target BS is determined described the second local gateway that meets described predetermined condition, and the IP address of described the second local gateway is sent to described Mobility Management Entity, described Mobility Management Entity judges that the IP address of described the second local gateway is different with the IP address of described the first local gateway, determine that described the first local gateway does not meet described predetermined condition, or, described local IP connects the system of setting up for determining that in the following manner described target BS does not meet predetermined condition to the route between described the first local gateway: described the first local gateway receives the current location of described user terminal from Mobility Management Entity, described the first local gateway checks that the described current location of described user terminal exceeds the predetermined territorial scope of described the first local gateway.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910266004.3A CN102111748B (en) | 2009-12-28 | 2009-12-28 | Method and system for establishing local internet protocol (IP) connection |
| PCT/CN2010/079098 WO2011079667A1 (en) | 2009-12-28 | 2010-11-24 | Local internet protocol (ip) access or selected internet protocol traffic offload establishment method and system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910266004.3A CN102111748B (en) | 2009-12-28 | 2009-12-28 | Method and system for establishing local internet protocol (IP) connection |
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| CN102111748A CN102111748A (en) | 2011-06-29 |
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| CN103167571B (en) * | 2011-12-09 | 2017-07-21 | 华为终端有限公司 | Switching method and mobile management device, home access device |
| CN103297947B (en) | 2012-02-22 | 2018-06-26 | 中兴通讯股份有限公司 | A kind of method and system for realizing local IP operation |
| CN103428731B (en) * | 2012-05-25 | 2018-08-24 | 中兴通讯股份有限公司 | Routing optimization method and system, gateway |
| CN103905570B (en) * | 2012-12-26 | 2018-11-23 | 中兴通讯股份有限公司 | IP address delete processing, delet method and the device of multiple stack carrying |
| WO2015054850A1 (en) * | 2013-10-16 | 2015-04-23 | 华为技术有限公司 | Communication method, communication device, and communication system |
| US10104582B2 (en) | 2014-08-11 | 2018-10-16 | Cisco Technology, Inc. | Call preservation on handover |
| CN106034335A (en) * | 2015-03-19 | 2016-10-19 | 中兴通讯股份有限公司 | Switching method and apparatus of mobile network |
| CN108377526B (en) * | 2016-11-03 | 2020-09-29 | ***通信有限公司研究院 | Data distribution method and device |
| PL3583809T3 (en) * | 2017-02-12 | 2022-07-18 | FG Innovation Company Limited | Mobility management for rrc_inactive user equipment |
| CN108495298B (en) * | 2018-03-12 | 2021-03-30 | 北京佰才邦技术有限公司 | Method and device for updating IP address when mobile terminal moves between neutral host networks and computer readable storage medium |
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| WO2011079667A1 (en) | 2011-07-07 |
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