CN102026401A - Mobility processing method and device - Google Patents

Mobility processing method and device Download PDF

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Publication number
CN102026401A
CN102026401A CN2009101761297A CN200910176129A CN102026401A CN 102026401 A CN102026401 A CN 102026401A CN 2009101761297 A CN2009101761297 A CN 2009101761297A CN 200910176129 A CN200910176129 A CN 200910176129A CN 102026401 A CN102026401 A CN 102026401A
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network element
wireless side
side network
local
internet protocol
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CN102026401B (en
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王静
周娜
霍玉臻
梁爽
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Haining hi tech Zone Science and Innovation Center Co., Ltd
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ZTE Corp
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Priority to PCT/CN2010/076029 priority patent/WO2011032444A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks

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  • Computer Networks & Wireless Communication (AREA)
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  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a mobility processing method and a mobility processing device. The method comprises the following steps that: the original wireless side network element judges whether an achievable interface exists between a target wireless side network element and a local internet protocol access function implementation unit or not according to information of the target wireless side network element; and the original wireless side network element reports the interface capability to a core network mobility management unit according to a determined result to ensure that the core network mobility management unit can update or release a local internet protocol access link according to the interface capability, wherein the interface capability is used for indicating that whether the achievable interface exists between the target wireless side network element and the local internet protocol access function implementation unit or not. By the method and the device, local internet protocol (IP) access mobility is realized.

Description

Mobility treating method and device
Technical field
The present invention relates to the communications field, in particular to a kind of mobility treating method and device.
Background technology
In order to keep the competitiveness of 3-G (Generation Three mobile communication system) in the communications field, speed is faster, time delay is lower, the mobile communication service of personalization more for the user provides, simultaneously, reduce operating cost of operator, third generation partner program (3rd Generation Partnership Project, abbreviating 3GPP as) the standard operation group just is being devoted to the research of evolved packet system (Evolved Packet System abbreviates EPS as).
Fig. 1 is the structural representation according to the evolution grouping domain system of correlation technique, and as shown in Figure 1, whole EPS system is divided into wireless access network and core net two parts.In core net, comprised home subscriber server (Home Subscriber Server, abbreviate HSS as), Mobility Management Entity (Mobility Management Entity, abbreviate MME as), service universal grouping wireless business supporting node (Serving General Packet Radio Service Support Node, abbreviate SGSN as), policy charging rule function (Policy and Charging Rule Function, abbreviate PCRF as), gateway (Serving Gateway, abbreviate S-GW as), packet data gateway (PDN Gateway, abbreviate P-GW as) and packet data network (Packet Data Network, packet data network).Below detailed each several part function:
Home subscriber server is the permanent storage place of user contracting data, is positioned at the home network that the user contracts.
MME is the storage place of user contracting data in current network, is responsible for the Non-Access Stratum signaling management of terminal to network, the safety verification function of terminal, mobile management, the tracking under user's idle pulley and the paging management function and the bearer management of terminal.
SGSN, be GSM EDGE wireless access network (GSM EDGE radio access network, abbreviate GERAN as) and global system for mobile communications wireless access network (Universal Mobile Telecommunication System Radio Access Network, abbreviate UTRAN as) the business support point of user access core network network, similar on the function with MME, be responsible for user's functions such as position renewal, paging management and bearer management.
Gateway is the gateway that core net arrives wireless system, is responsible for terminal to the user plane bearer of core net, the metadata cache under the terminal idle pulley, function, Lawful Interception and grouped data route and the forwarding capability that network side is initiated service request; Gateway is responsible for adding up the situation that user terminal uses wireless network, and produces the ticket that terminal is used wireless network, sends charging gateway to.
Packet data gateway, it is the gateway of evolution system and this system's external packet data network, it is connected on internet and the packet data network, functions such as Internet protocol (Internet Protocol the abbreviates IP as) address assignment of responsible terminal, billing function, grouping packet filtering, policy control.
Packet data network is the IP operation network of operator, and this network provides IP service by the core net of operator for the user.
Policy charging rule functional entity is a server of being responsible for providing charging control, the control of online credit, thresholding control, service quality (Quality of Service abbreviates QoS as) tactful aspect rule in the evolution system.
Wireless access network, be by evolution base station (E-UTRAN NodeB, abbreviate eNB as) and 3G radio network controller (Radio Network Control, abbreviate RNC as) form, it mainly is responsible for the transmitting-receiving of wireless signal, by air interface and terminal contact, Radio Resource, scheduling of resource, the access control of management air interface.
Above-mentioned SGSN is the SGSN that upgraded, can support and gateway between the S4 interface, and and mobility management unit between adopt the GTPv2 agreement to carry out intercommunication.And the PS territory network architecture and Fig. 1 are different for the SGSN that supports the 3G core net.This moment, SGSN adopted gn interface to link to each other with MME, and the GTPv1 agreement is adopted in intercommunication.SGSN can not link to each other with gateway, is connected to Gateway GPRS Support Node (Gateway GPRS Support Node abbreviates GGSN as) by gn interface and directly carries out the packet data network visit.
Home eNodeB (Home NodeB, abbreviate HNB as) or Home eNodeB (the Home eNodeB of evolution, be called for short HeNB) be small-sized, the lower powered base station of a class, dedicated resources as the certain user, being deployed in private sites such as family, group, company or school uses, higher service rate is provided and reduces the needed expense of use high rate services to the user, remedy the deficiency that existing distributed cellular radio communication system covers simultaneously.The advantage of Home eNodeB is economical, convenient, low-power output, plug and play, broadband access, use single-mode terminal etc.
Fig. 2 is the wireless side network element access core net schematic diagram one according to correlation technique, as shown in Figure 2, Home eNodeB can be directly connected to core network, also can provide the providing powerful support for of local IP access technology by setting up local gateway, and local gateway can close with the wireless side network element and establish.
Fig. 3 is the wireless side network element access core net schematic diagram two according to correlation technique, as shown in Figure 3, Home eNodeB can be linked into core network by this logical ne of home base-station gateway, wherein, the home base-station gateway major function 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.
Fig. 4 is the wireless side network element access core net schematic diagram three according to correlation technique, as shown in Figure 4, in order to realize the local IP access function, 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.Local gateway can be local SGW (Local SGW abbreviates L-SGW as), local PGW (Local PGW abbreviates L-PGW as), local GGSN (Local GGSN abbreviates L-GGSN as), external L-GW (Local GW) etc.
The local IP access that relates to herein can refer to LIPA, its English full name is LocalIPAccess, but be not restricted to this specific unique appellation, it is one of following that the concrete application of local IP access can also comprise: the triage operator of local IP access subscriber's local network, local IP access company local network, local IP access the Internet, the Internet or company or home business.
Fig. 5 is the data flow path schematic diagram according to the local IP access of correlation technique and the visit of traditional IP core network, as shown in Figure 5, in the mobile communications network framework, the data flow path of local IP access and the visit of traditional IP core network.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, the local IP access data path closes to the wireless side network element to local access network from terminal that (L-GGSN), transfer of data is without core net for L-SGW, L-PGW.In order to realize that terminal inserts this locality of other IP devices of home network or internet, can set up two connections, the direct access internet of article one 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).
Fig. 6 is that the local IP access according to correlation technique links data flow path schematic diagram when mobile, as shown in Figure 6, after the user connects and initiates business, is experience and the satisfaction that improves the user, and the Carrier Requirements network can provide business continuance.Require the connection of user's foundation to have mobility this moment.In Long Term Evolution (Long-Term Evolution abbreviates LTE as) mobile communications network framework, after terminal moves, 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 the transmission of wireless side network element), after terminal moves, the data flow of local IP access need be through Target Wireless side network element to former local packet data gateway (L-PGW), wherein local service gateway (L-SGW) both can use former also can use new, local gateway is positioned at former wireless side network element or in its vicinity external, therefore, local IP access connects and whether to have mobility and depend on whether have interface between these they.But core net does not also 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
At in the correlation technique owing to core net can not judge that thereby whether having interface between former wireless side network element and the Target Wireless side network element causes realizing that local IP access connects ambulant problem and proposes the present invention, for this reason, main purpose of the present invention is to provide a kind of mobility processing scheme, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of mobility treating method is provided, and this method comprises: former wireless side network element judges according to the information of Target Wireless side network element that Target Wireless side network element and local internet protocol access function realize whether existing between the unit can reach interface; Former wireless side network element reports interface capability according to judged result to the core network mobility administrative unit, so that the core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to interface capability, wherein, whether interface capability is used to indicate Target Wireless side network element and local internet protocol access function to realize existing between the unit can to reach interface.
Preferably, former wireless side network element reports interface capability to comprise according to judged result to the core network mobility administrative unit: former wireless side network element sends handoff request message according to judged result to the core network mobility administrative unit, and carries interface capability therein; Perhaps former wireless side network element sends RELOCATION REQUEST message according to judged result to the core network mobility administrative unit, and carries interface capability therein; Perhaps former wireless side network element sends the handoff request message that carries interface capability according to judged result to Target Wireless side network element, so that Target Wireless side network element reports the core network mobility administrative unit by path exchange request message with interface capability.
Preferably, former wireless side network element according to judged result after the core network mobility administrative unit reports interface capability, said method also comprises: core network mobility administrative unit receiving interface ability, and judge according to interface capability that Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reach interface; The core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to judged result.
Preferably, renewal or releasing operation that the core network mobility administrative unit is carried out the local internet protocol access links according to judged result comprise: if judged result is for being the then renewal operation of core network mobility administrative unit execution local internet protocol access links; If judged result is not, then the core network mobility administrative unit is carried out the releasing operation of local internet protocol access links.
Preferably, the core network mobility administrative unit is preserved sign or the address information that the local internet protocol access function realizes the unit in advance, so that carry out the renewal or the releasing operation of local internet protocol access links according to sign or address information.
Preferably, to realize that the unit comprises one of following for the local internet protocol access function: local service gateway, local access network close.
Preferably, former wireless side network element comprises one of following: Home eNodeB, macro base station, femto gateway.
One of below preferably, the information of Target Wireless side network element comprises at least: closed user group id under network element ID, the network element.
Preferably, the core network mobility administrative unit comprises one of following: Mobility Management Entity, service universal grouping wireless business supporting node.
To achieve these goals, according to another aspect of the present invention, a kind of mobility processing unit is provided, this device comprises: judge module is used for judging according to the information of Target Wireless side network element that Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reaches interface; Reporting module, be used for reporting interface capability to the core network mobility administrative unit according to judged result, so that the core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to interface capability, wherein, whether interface capability is used to indicate Target Wireless side network element and local internet protocol access function to realize existing between the unit can to reach interface.
By the present invention, adopt the wireless side network element according to the information of Target Wireless side network element judge its with local IP access function realization unit between whether have the interface that can reach and interface capability reported the core network mobility administrative unit so that the core network mobility administrative unit is carried out the renewal that local IP access links or the method for releasing operation according to interface capability, can not judge that whether having interface between former wireless side network element and the Target Wireless side network element can't realize that local IP access connects ambulant problem thereby solved core net, and then realize the local IP access mobility.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation according to the evolution grouping domain system of correlation technique;
Fig. 2 is the wireless side network element access core net schematic diagram one according to correlation technique;
Fig. 3 is the wireless side network element access core net schematic diagram two according to correlation technique;
Fig. 4 is the wireless side network element access core net schematic diagram three according to correlation technique;
Fig. 5 is the data flow path schematic diagram according to the local IP access of correlation technique and the visit of traditional IP core network;
Fig. 6 is that the local IP access according to correlation technique links data flow path schematic diagram when mobile;
Fig. 7 is the flow chart according to the mobility treating method of the embodiment of the invention;
Fig. 8 be according to the embodiment of the invention for the interaction diagrams of the S1 of LTE system handoff procedure local IP access mobility processing mode one;
Fig. 9 is the interaction diagrams according to the S1 of the LTE system handoff procedure local IP access mobility processing mode two of the embodiment of the invention;
Figure 10 is the interaction diagrams according to the gprs system handoff procedure local IP access mobility processing mode of the embodiment of the invention;
Figure 11 is the interaction diagrams according to the X2 of the LTE system handoff procedure local IP access mobility processing mode one of the embodiment of the invention;
Figure 12 is the interaction diagrams according to the X2 of the LTE system handoff procedure local IP access mobility processing mode two of the embodiment of the invention;
Figure 13 is the structured flowchart according to the mobility processing unit of the embodiment of the invention;
Figure 14 is the preferred structure block diagram according to the mobility processing unit of the embodiment of the invention.
Embodiment
Functional overview
Consider that core net can not judge that thereby whether having interface between former wireless side network element and the Target Wireless side network element can't realize that local IP access connects ambulant problem in the correlation technique, the embodiment of the invention provides a kind of mobility processing scheme, utilize former wireless side network element to judge according to the information of Target Wireless side network element that itself and local IP access function realize whether existing between the unit and can reach interface, and interface capability is reported the core network mobility administrative unit; The core network mobility administrative unit is carried out the renewal of local IP access link or releasing operation to realize the local IP access mobility according to interface capability.
Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Method embodiment
According to embodiments of the invention, provide a kind of mobility treating method.Fig. 7 is the flow chart according to the mobility treating method of the embodiment of the invention, as shown in Figure 7, comprises that following step S702 is to step S704:
Step S702, former wireless side network element judges according to the information of Target Wireless side network element that Target Wireless side network element and local internet protocol access function realize whether existing between the unit can reach interface.Wherein, former wireless side network element comprises Home eNodeB, macro base station, femto gateway etc.
Wherein, the information of Target Wireless side network element can comprise following one of at least: closed user group id under network element ID, the network element; It is one of following that the local internet protocol access function realizes that the unit can comprise: former wireless side network element (close to close establish with local access network) or local access network close (singly putting).
Step S704, former wireless side network element reports interface capability according to judged result to the core network mobility administrative unit, so that the core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to interface capability, wherein, whether interface capability is used to indicate Target Wireless side network element and local internet protocol access function to realize existing between the unit can to reach interface.
Wherein, it is one of following that above-mentioned core network mobility administrative unit can comprise: MME, SGSN, and the core network mobility administrative unit preserves sign or address information that the local internet protocol access function realizes the unit in advance, so that carry out the renewal or the releasing operation of local internet protocol access links according to sign or address information.
Particularly, former wireless side network element reports interface capability to comprise one of following mode according to judged result to the core network mobility administrative unit:
Mode one: former wireless side network element sends handoff request message according to judged result to the core network mobility administrative unit, and carries interface capability therein.
Mode two: former wireless side network element sends RELOCATION REQUEST message according to judged result to the core network mobility administrative unit, and carries interface capability therein.
Mode three: former wireless side network element sends the handoff request message that carries interface capability according to judged result to Target Wireless side network element, so that Target Wireless side network element reports the core network mobility administrative unit by path exchange request message with interface capability.
Former wireless side network element according to judged result after the core network mobility administrative unit reports interface capability, said method also comprises: core network mobility administrative unit receiving interface ability, and judge according to interface capability that Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reach interface; The core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to judged result.
Wherein, renewal or releasing operation that the core network mobility administrative unit is carried out the local internet protocol access links according to judged result comprise: if judged result is for being the then renewal operation of core network mobility administrative unit execution local internet protocol access links; If judged result is not, then the core network mobility administrative unit is carried out the releasing operation of local internet protocol access links.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Embodiment one
Fig. 8 be according to the embodiment of the invention be the interaction diagrams of the S1 of LTE system handoff procedure local IP access mobility processing mode one, as shown in Figure 8, the S802 that comprises the steps is to step S818:
Step S802, terminal periodic detects the wireless signal of this sub-district and other neighbor cells, with the former wireless side network element of offering of measurement report in form.The cell signal that is inserted when the present terminal of former wireless side NE Discovery has been lower than threshold value can not initiate the S1 handoff procedure for the Target Wireless side network element that the user provides connection so just select a signal strength signal intensity to be fit to.
Step S804, former wireless side network element judges according to Target Wireless side net element information that itself and local IP access function realize whether having disposed between the unit can reach interface.Wherein the information of Target Wireless side network element includes but not limited to network element ID, the affiliated closed user group id of network element etc.Wherein the local IP access function realizes that the unit can be: former wireless side network element (close to close establish with local access network) or local access network close (singly putting) (that is above-mentioned steps S702).
Step S806, former wireless side network element reports interface capability (that is above-mentioned steps S704) in the handoff request message that sends to MME.
Indication determines whether to support the mobility of LIPA and the foundation that indicating target wireless side network element carries out the respective wireless carrying according to interface capability for step S808, MME.
Step S810a can reach interface if MME learns between former wireless side network element and the Target Wireless side network element to exist, and promptly can support the mobility of LIPA link, and MME sets up LIPA with regard to indicating target wireless side network element and core net is carried pairing radio bearer so.
Step S812a, MME carries address, local access network pass, the uplink tunnel sign of IAD and the information such as Qos parameter that will set up radio bearer that former wireless side network element connects in the handoff request message that sends to Target Wireless side network element, get through the data feedback channel of transfer of data.
Step S814a, Target Wireless side network element are that resource reservation is carried out in LIPA carrying, bring MME by switch acknowledgment message with the address and the downlink tunnel sign of Target Wireless side network element.
Step S816a, MME informs former local IAD (that is, the renewal of local internet protocol access links operation) by the bearer update process with wireless side network element address and downlink tunnel sign, gets through the down going channel of transfer of data.
Step S810b, if learning not exist between former wireless side network element and the Target Wireless side network element, MME can reach interface, promptly can not support the mobility of LIPA link, MME sets up core net with regard to indicating target wireless side network element and carries pairing radio bearer and discharge original LIPA link so.
Step S812b, MME carry core net access gateway address, uplink tunnel sign and will set up radio bearer in the handoff request message that sends to Target Wireless side network element information such as Qos parameter are got through the data feedback channel of transfer of data.
Step S814b, Target Wireless side network element are that resource reservation is carried out in core net carrying, bring MME by switch acknowledgment message with the address and the downlink tunnel sign of Target Wireless side network element.
Step S816b, MME discharges (that is the releasing operation of local internet protocol access links) by the deleting load-bearing process with original user LIPA link.
Step S818 continues to finish follow-up handoff procedure.
Embodiment two
Fig. 9 is the interaction diagrams according to the S1 of the LTE system handoff procedure local IP access mobility processing mode two of the embodiment of the invention, as shown in Figure 9, this moment, Target Wireless side network element closed realization LIPA function by new local access network, comprised that specifically following step S902 is to step S918:
Step S902, terminal periodic detects the wireless signal of this sub-district and other neighbor cells, with the former wireless side network element of offering of measurement report in form.The cell signal that is inserted when the present terminal of former wireless side NE Discovery has been lower than threshold value can not initiate the S1 handoff procedure for the Target Wireless side network element that the user provides connection so just select a signal strength signal intensity to be fit to.
Step S904, former wireless side network element judges according to Target Wireless side net element information that itself and local IP access function realize whether having disposed between the unit can reach interface.Wherein the information of Target Wireless side network element includes but not limited to network element ID, the affiliated closed user group id of network element etc.Wherein the local IP access function realizes that the unit can be: former wireless side network element (close to close establish with local access network) or local access network close (singly putting).
Step S906, former wireless side network element reports interface capability in the handoff request message that sends to MME.
Indication determines whether to support the mobility of LIPA and the foundation that indicating target wireless side network element carries out the respective wireless carrying according to interface capability for step S908, MME.
Step S910a can reach interface if MME learns between former wireless side network element and the Target Wireless side network element to exist, and promptly can support the mobility of LIPA link, and MME sets up LIPA with regard to indicating target wireless side network element and core net is carried pairing radio bearer so.
LIPA session link between step S912a, MME set up and newly local access network closes obtains the uplink tunnel sign that new local access network closes.
Step S914a, MME carry new local access network and close the uplink tunnel sign of address, IAD and the information such as Qos parameter that will set up radio bearer in the handoff request message that sends to Target Wireless side network element, get through the data feedback channel of transfer of data.
Step S916a, Target Wireless side network element are that resource reservation is carried out in LIPA carrying, bring MME by switch acknowledgment message with the address and the downlink tunnel sign of Target Wireless side network element.
Step S918a, MME informs that with wireless side network element address and downlink tunnel sign new local access network closes, and gets through the down going channel of transfer of data by the bearer update process.
Step S910b, if learning not exist between former wireless side network element and the Target Wireless side network element, MME can reach interface, promptly can not support the mobility of LIPA link, MME sets up core net with regard to indicating target wireless side network element and carries pairing radio bearer and discharge original LIPA link so.
Step S912b, MME carry core net access gateway address, uplink tunnel sign and will set up radio bearer in the handoff request message that sends to Target Wireless side network element information such as Qos parameter are got through the data feedback channel of transfer of data.
Step S914b, Target Wireless side network element are that resource reservation is carried out in core net carrying, bring MME by switch acknowledgment message with the address and the downlink tunnel sign of Target Wireless side network element.
Step S916b, MME discharges original user LIPA link by the deleting load-bearing process.
Step S918 continues to finish follow-up handoff procedure.
Embodiment three
Figure 10 is the interaction diagrams according to the gprs system handoff procedure local IP access mobility processing mode of the embodiment of the invention, as shown in figure 10, comprises that following step S1002 is to step S1018:
Step S1002, terminal periodic detects the wireless signal of this sub-district and other neighbor cells, with the former wireless side network element of offering of measurement report in form.The cell signal that is inserted when the present terminal of former wireless side NE Discovery has been lower than threshold value can not initiate handoff procedure for the Target Wireless side network element that the user provides connection so just select a signal strength signal intensity to be fit to.
Step S1004, former wireless side network element judges according to Target Wireless side net element information that itself and local IP access function realize whether having disposed between the unit can reach interface.Wherein the information of Target Wireless side network element includes but not limited to network element ID, the affiliated closed user group id of network element etc.Wherein the local IP access function realizes that the unit can be: former wireless side network element (close to close establish with local access network) or local access network close (singly putting).
Step S1006, former wireless side network element reports interface capability in the RELOCATION REQUEST message that sends to SGSN.
Indication determines whether to support the mobility of LIPA and the foundation that indicating target wireless side network element carries out the respective wireless carrying according to interface capability for step S1008, SGSN.
Step S1010a, SGSN learn between former wireless side network element and the Target Wireless side network element to exist and can reach interface, promptly can support the mobility of LIPA link, and SGSN sets up LIPA with regard to indicating target wireless side network element and core net is carried pairing radio bearer so.
Step S1012a, SGSN is in the parameter of carrying the corresponding RAB needs of LIPA institute in the RELOCATION REQUEST message that Target Wireless side network element sends.Adopt direct tunnel form because the LIPA link data sends,, get through the data feedback channel of transfer of data so SGSN also sends to Target Wireless side network element with former L-GGSN address, uplink tunnel sign.
Step S1014a, Target Wireless side network element are LIPA carrying carrying out resource reservation, bring MME by the re-positioning request acknowledge message with address and the downlink tunnel sign that RAB sets up situation (not having to set up as which radio bearer), Target Wireless side network element.
Step S1016a, SGSN informs former local IAD by upgrading the PDP Context process with wireless side network element address and downlink tunnel sign, gets through the down going channel of transfer of data.
Step S1010b, if learning not exist between former wireless side network element and the Target Wireless side network element, SGSN can reach interface, promptly can not support the mobility of LIPA link, SGSN sets up core net with regard to indicating target wireless side network element and carries pairing radio bearer and discharge original LIPA link so.
Step S1012b, SGSN carries the information such as Qos parameter that will set up radio bearer in the RELOCATION REQUEST message that sends to Target Wireless side network element.
Step S1014b, Target Wireless side network element are that resource reservation is carried out in the core net carrying, by the re-positioning request acknowledge message radio bearer are set up situation and bring SGSN.
Step S1016b, SGSN discharges original user LIPA link by deletion PDP Context process.
Step S1018 continues to finish follow-up handoff procedure.
Embodiment four
Figure 11 is the interaction diagrams according to the X2 of the LTE system handoff procedure local IP access mobility processing mode one of the embodiment of the invention, as shown in figure 11, comprises that following step S1102 is to step S1122:
Step S1102, terminal periodic detects the wireless signal of this sub-district and other neighbor cells, with the former wireless side network element of offering of measurement report in form.The cell signal that is inserted when the present terminal of former wireless side NE Discovery has been lower than threshold value can not initiate the X2 handoff procedure for the Target Wireless side network element that the user provides connection so just select a signal strength signal intensity to be fit to.
Step S1104, former wireless side network element judges according to Target Wireless side net element information that itself and local IP access function realize whether having disposed between the unit can reach interface.Wherein the information of Target Wireless side network element includes but not limited to network element ID, the affiliated closed user group id of network element etc.Wherein the local IP access function realizes that the unit can be: former wireless side network element (close to close establish with local access network) or local access network close (singly putting).
Step S1106, because former wireless side network element can't learn at present whether the user has activated the LIPA function, then in the handoff request message that sends to the target side network element, carry interface capability, radio bearer tabulation and Qos parameter, uplink tunnel sign and gateway address that all need be set up.
If former wireless side network element obtains the bearer types indication of core net when setting up radio bearer, do not need to carry interface capability and radio bearer information that all need be set up so in the handoff request message, only need judge whether to want target wireless side network element to set up the LIPA radio bearer and get final product, can finish by adjusting the required content of setting up the radio bearer tabulation according to interface capability.The processing of follow-up core net is finished according to prior art and is got final product.
Step S1108, Target Wireless side network element is set up corresponding empty port load-supporting according to the beared information of receiving, informs the resource reservation success of target side by switching request acknowledgement message.
Step S1110, former wireless side network element is by the air interface synchronization process of rrc layer message indicating terminal to Target Wireless side network element.
Step S1112, terminal is informed the success of Target Wireless side network element air interface synchronization by switching authentic information, this moment, Target Wireless side network element can carry out data cached forwarding.
Step S1114, Target Wireless side network element is given MME by path exchange request message with the address and the downlink tunnel identification-information reporting of target side network element.Interface capability also transmits in this message, and MME judges the renewal or the deletion of LIPA carrying according to interface capability.
Step S1116a, if target side network element and local IP access function realize having interface between the unit, MME upgrades the LIPA carrying synchronously so.
Step S1118a, MME reports to local access network by the bearer update process with the address of Target Wireless side network element and downlink tunnel identification information and closes, and gets through the down going channel of transfer of data.
Step S1116b, if target side network element and local IP access function realize not having interface between the unit, MME only upgrades the core net carrying so, carries out the release of LIPA link.
Step S1118b, MME deletes all LIPA carryings of user by the deleting load-bearing process.
Step S1120, MME confirm the success of path exchange by path exchange request acknowledge message.If some carrying of core-network side is not set up, for example LIPA is carried under the no interface case and deletes, and so also deletes by the carrying of this message indication respective wireless side.
Step S1122 continues to finish follow-up handoff procedure.
Embodiment five
Figure 12 is the interaction diagrams according to the X2 of the LTE system handoff procedure local IP access mobility processing mode two of the embodiment of the invention, and as shown in figure 12, the S1202 that comprises the steps is to step S1222:
Step S1202, terminal periodic detects the wireless signal of this sub-district and other neighbor cells, with the former wireless side network element of offering of measurement report in form.The cell signal that is inserted when the present terminal of former wireless side NE Discovery has been lower than threshold value can not initiate the X2 handoff procedure for the Target Wireless side network element that the user provides connection so just select a signal strength signal intensity to be fit to.
Step S1204, former wireless side network element judges according to Target Wireless side net element information that itself and local IP access function realize whether having disposed between the unit can reach interface.Wherein the information of Target Wireless side network element includes but not limited to network element ID, the affiliated closed user group id of network element etc.Wherein the local IP access function realizes that the unit can be: former wireless side network element (close to close establish with local access network) or local access network close (singly putting).
Step S1206, because former wireless side network element can't learn at present whether the user has activated the LIPA function, then in the handoff request message that sends to the target side network element, carry interface capability, radio bearer tabulation and Qos parameter, uplink tunnel sign and gateway address that all need be set up.
If former wireless side network element obtains the bearer types indication of core net when setting up radio bearer, do not need to carry interface capability and radio bearer information that all need be set up so in the handoff request message, only need judge whether to want target wireless side network element to set up the LIPA radio bearer and get final product, can finish by adjusting the required content of setting up the radio bearer tabulation according to interface capability.The processing of follow-up core net is finished according to prior art and is got final product.
Step S1208, Target Wireless side network element is set up corresponding empty port load-supporting according to the beared information of receiving, informs the resource reservation success of target side by switching request acknowledgement message.
Step S1210, former wireless side network element is by the air interface synchronization process of rrc layer message indicating terminal to Target Wireless side network element.
Step S1212, terminal is informed the success of Target Wireless side network element air interface synchronization by switching authentic information, this moment, Target Wireless side network element can carry out data cached forwarding.
Step S1214, Target Wireless side network element is given MME by path exchange request message with the address and the downlink tunnel identification-information reporting of target side network element.Interface capability also transmits in this message, and MME judges the renewal or the deletion of LIPA carrying according to interface capability.
Step S1216a, if target side network element and local IP access function realize having interface between the unit, MME revises the LIPA carrying synchronously so.
Step S1218a, MME reports to local access network by the bearer update process with the address of Target Wireless side network element and downlink tunnel identification information and closes, and gets through the down going channel of transfer of data.Sent the reorientation of local service gateway this moment.
Step S1216b, if target side network element and local IP access function realize not having interface between the unit, MME only revises the core net carrying so, carries out the release of LIPA link.
Step S1218b, MME deletes all LIPA carryings of user by the deleting load-bearing process.
Step S1220, MME confirm the success of path exchange by path exchange request acknowledge message.If some carrying of core-network side is not set up, for example LIPA is carried under the no interface case and deletes, and so also deletes by the carrying of this message indication respective wireless side.
Step S1222 continues to finish follow-up handoff procedure.
By the above embodiment of the present invention, utilize former wireless side network element to judge according to the information of Target Wireless side network element itself and local IP access function realize whether there is the interface that can reach between the unit, and interface capability is reported the core network mobility administrative unit; Thereby the core network mobility administrative unit has realized the local IP access mobility according to renewal or releasing operation that interface capability carries out the local IP access link.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Device embodiment
According to embodiments of the invention, a kind of mobility processing unit is provided, this device is used to realize above-mentioned mobility treating method.Figure 13 is the structured flowchart according to the mobility processing unit of the embodiment of the invention, and as shown in figure 13, this device comprises: judge module 131 and reporting module 132.Below said structure is described.
Judge module 131 is used for judging according to the information of Target Wireless side network element that Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reaches interface; Reporting module 132, be connected to judge module 131, be used for reporting interface capability to the core network mobility administrative unit according to the judged result of judge module 131, so that the core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to interface capability, wherein, whether interface capability is used to indicate Target Wireless side network element and local internet protocol access function to realize existing between the unit can to reach interface.
Figure 14 is that as shown in figure 14, reporting module also comprises according to the preferred structure block diagram of the mobility processing unit of the embodiment of the invention: first sends submodule 141, second sends submodule 142, the 3rd transmission submodule 143.Below said structure is described in detail.
First sends submodule 141, is connected to judge module 131, is used for sending handoff request message according to the judged result of judge module 131 to the core network mobility administrative unit, and carries interface capability therein; Second sends submodule 142, is connected to judge module 131, is used for sending RELOCATION REQUEST message according to the judged result of judge module 131 to the core network mobility administrative unit, and carries interface capability therein; The 3rd sends submodule 143, be connected to judge module 131, be used for sending the handoff request message that carries interface capability to Target Wireless side network element, so that Target Wireless side network element reports the core network mobility administrative unit by path exchange request message with interface capability according to the judged result of judge module 131.
Need to prove, in the process of practical application, according to the judged result of judge module 131, reporting module 132 can send submodule 141 first, the second transmission submodule the 142, the 3rd sends and selects one of them module to carry out the operation that sends the message that carries interface capability to Target Wireless side network element in the submodule 143.
For the core network mobility administrative unit, can preserve sign or address information that the local internet protocol access function realizes the unit in advance, so that carry out the renewal or the releasing operation of local internet protocol access links according to sign or address information.
Particularly, reporting module 132 according to judged result after the core network mobility administrative unit reports interface capability, core network mobility administrative unit receiving interface ability, and judge according to interface capability that Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reach interface; If judged result is for being the then renewal operation of core network mobility administrative unit execution local internet protocol access links; If judged result is not, then the core network mobility administrative unit is carried out the releasing operation of local internet protocol access links.
In sum, pass through the above embodiment of the present invention, utilize former wireless side network element to judge according to the information of Target Wireless side network element itself and local IP access function realize whether there is the interface that can reach between the unit, and interface capability is reported the core network mobility administrative unit; Thereby the core network mobility administrative unit has realized the local IP access mobility according to renewal or releasing operation that interface capability carries out the local IP access link.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a mobility treating method is characterized in that, comprising:
Former wireless side network element judges according to the information of Target Wireless side network element that described Target Wireless side network element and local internet protocol access function realize whether existing between the unit can reach interface;
Described former wireless side network element reports interface capability according to judged result to the core network mobility administrative unit, so that described core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to described interface capability, wherein, described interface capability is used to indicate described Target Wireless side network element and described local internet protocol access function to realize whether there is the described interface that reaches between the unit.
2. method according to claim 1 is characterized in that, described former wireless side network element reports described interface capability to comprise according to described judged result to described core network mobility administrative unit:
Described former wireless side network element sends handoff request message according to described judged result to described core network mobility administrative unit, and carries described interface capability therein; Perhaps
Described former wireless side network element sends RELOCATION REQUEST message according to described judged result to described core network mobility administrative unit, and carries described interface capability therein; Perhaps
Described former wireless side network element sends the handoff request message that carries described interface capability according to described judged result to described Target Wireless side network element, so that described Target Wireless side network element reports described core network mobility administrative unit by path exchange request message with described interface capability.
3. method according to claim 1 is characterized in that, after described core network mobility administrative unit reported described interface capability, described method also comprised described former wireless side network element according to described judged result:
Described core network mobility administrative unit receives described interface capability, and judges according to described interface capability described Target Wireless side network element and described local internet protocol access function realize whether there is the described interface that reaches between the unit;
Described core network mobility administrative unit is carried out the renewal or the releasing operation of described local internet protocol access links according to described judged result.
4. method according to claim 3 is characterized in that, renewal or releasing operation that described core network mobility administrative unit is carried out described local internet protocol access links according to described judged result comprise:
If judged result is for being, then described core network mobility administrative unit is carried out the renewal operation of described local internet protocol access links;
If judged result is that then described core network mobility administrative unit is not carried out the releasing operation of described local internet protocol access links.
5. method according to claim 1, it is characterized in that, described core network mobility administrative unit is preserved sign or the address information that described local internet protocol access function realizes the unit in advance, so that carry out the renewal or the releasing operation of local internet protocol access links according to described sign or described address information.
6. according to each described method in the claim 1 to 5, it is characterized in that it is one of following that described local internet protocol access function realizes that the unit comprises:
Local service gateway, local access network close.
7. according to each described method in the claim 1 to 5, it is characterized in that it is one of following that described former wireless side network element comprises:
Home eNodeB, macro base station, femto gateway.
One of 8. according to each described method in the claim 1 to 5, it is characterized in that, below the information of described Target Wireless side network element comprises at least:
Closed user group id under network element ID, the network element.
9. according to each described method in the claim 1 to 5, it is characterized in that it is one of following that described core network mobility administrative unit comprises:
Mobility Management Entity, service universal grouping wireless business supporting node.
10. a mobility processing unit is characterized in that, comprising:
Judge module is used for judging according to the information of Target Wireless side network element that described Target Wireless side network element and local internet protocol access function realize whether existing between the unit and can reaches interface;
Reporting module, be used for reporting interface capability to the core network mobility administrative unit according to judged result, so that described core network mobility administrative unit is carried out the renewal or the releasing operation of local internet protocol access links according to described interface capability, wherein, described interface capability is used to indicate described Target Wireless side network element and described local internet protocol access function to realize whether there is the described interface that reaches between the unit.
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