WO2011026407A1 - Procédé et système de prise en charge de mobilité de connexion d'accès par protocole internet local - Google Patents

Procédé et système de prise en charge de mobilité de connexion d'accès par protocole internet local Download PDF

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Publication number
WO2011026407A1
WO2011026407A1 PCT/CN2010/076395 CN2010076395W WO2011026407A1 WO 2011026407 A1 WO2011026407 A1 WO 2011026407A1 CN 2010076395 W CN2010076395 W CN 2010076395W WO 2011026407 A1 WO2011026407 A1 WO 2011026407A1
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WIPO (PCT)
Prior art keywords
network element
local
side network
new
original
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PCT/CN2010/076395
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English (en)
Chinese (zh)
Inventor
霍玉臻
周娜
宗在峰
梁爽
Original Assignee
中兴通讯股份有限公司
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Publication of WO2011026407A1 publication Critical patent/WO2011026407A1/fr

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Classifications

    • 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
    • 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
    • H04W8/08—Mobility data transfer
    • H04W8/087—Mobility data transfer for preserving data network PoA address despite hand-offs

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and system for accessing mobility support of a local internet protocol (IP).
  • IP internet protocol
  • EPS 3rd Generation Partnership Project
  • Evolved Packet System Evolved Packet System
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • MME Mobile Management Unit
  • SGW Serving Gateway
  • PGW Packet Data Network Gate
  • HSS Home Subscriber Server
  • P-GW PDN GW
  • PDN refers to packet data network, which is represented by Packet Data Network.
  • the MME is responsible for the control planes such as mobility management, non-access stratum signaling processing, and user mobility management context management;
  • the access gateway includes the SGW and the PGW, and the SGW is the E- The UTRAN-connected access gateway device forwards data between E-UTRAN and PGW and is responsible for buffering paging waiting data;
  • PGW is the border gateway of EPS and PDN network, responsible for PDN access and EPS and PDN The function of forwarding data and so on;
  • the authentication authorization server includes HSS, 3GPP AAA server;
  • the PCRF entity is a policy and charging rule function entity, which is connected to the IP service network through the receiving interface Rx to obtain service information, and further, it passes Gx/Gxa
  • the /Gxc interface is connected to the gateway device in the network and is responsible for initiating the IP bearer.
  • the establishment guarantees the quality of service (QoS) of the service data, and performs charging control.
  • QoS quality of service
  • the home base station is a small, low-power base station deployed in indoor places such as homes and offices.
  • the main purpose is to provide users with higher service rates and lower the cost of using high-speed services, while making up for existing distributed Insufficient coverage of cellular wireless communication systems.
  • the advantages of a home base station are affordability, convenience, low power output, plug and play, and more.
  • the home base station can be directly connected to the core network, as shown in FIG. 1.
  • the wireless side network element in FIG. 1 can be a home base station; the home base station can also access the core network through the home base station gateway, the logical network element, as shown in the figure. 2 or as shown in FIG. 3, here, the radio side network element in FIG. 2 or FIG. 3 may be a home base station.
  • the main functions of the home base station gateway are: verifying the security of the home base station, handling the registration of the home base station, performing operation and maintenance management on the home base station, configuring and controlling the home base station according to the operator's requirements, and exchanging data of the core network and the home base station.
  • FIG. 1 FIG. 2 or FIG.
  • the access gateway of the core network may be an SGW, a PGW, a Serving GPRS Support Node (SGSN), and a Gateway GPRS Support Node (GGSN), where GPRS refers to the general wireless packet service.
  • the local gateway may be a local SGW (L-SGW, Local SGW), a local PGW (L-PGW, Local PGW), a virtual SGW (V-SGW, Virtual SGW), a virtual PGW (V-PGW, Virtual PSGW), a local GGSN. (L-GGSN, Local GGSN), an external local gateway (L-GW, Local GW), or a data offload function entity.
  • the local gateway can be set up with the wireless side network element, or can be set up with the home base station gateway, or can be set near the wireless side network element or the home base station gateway, that is, the external mode.
  • the local gateway In order to implement the local IP access function, that is, the local access to the other IP devices of the home network or the Internet is added to the local gateway, as shown in FIG. 1, FIG. 2, FIG. 3, or FIG.
  • the addition of the local gateway can provide strong support for the local IP access technology.
  • the local gateway can be set up with the wireless side network element, or set in the vicinity of the wireless side network element in an external manner; The gateway is set up, or is set to be in the vicinity of the home base station gateway.
  • the data flow path for local IP access and traditional core network IP access in the mobile communication network architecture is shown.
  • a traditional core IP access data path and a local IP access data path can be established.
  • the local IP access data path is: from the terminal to the wireless side network element and/or the home base station gateway, to the local gateway, such as L-SGW or L-PGW, data transmission Not through the core network.
  • L-SGW or L-PGW local gateway
  • the first local IP access data path directly accesses the Internet, namely: Internet local IP access connection.
  • the second local IP access data path directly accesses other IP devices on the home network, namely: Home network local IP access connection.
  • the operator requires the network to be able to provide business continuity.
  • the user's connection is required to be mobile, that is, when the connection is mobile, the network can provide business continuity.
  • the network can provide business continuity.
  • the main object of the present invention is to provide a method and system for local IP access connection mobility support, which can support the mobility of a local IP access connection.
  • a method for local network protocol access connection mobility support comprising: a new wireless side network element/new home base station gateway determining whether a local internet protocol (IP) connection has mobility; according to the judgment result, supporting a local IP access connection Corresponding mobility processing;
  • IP internet protocol
  • the determining includes: performing the determining by comparing the network element information delivered by the new radio side network element/new home base station gateway or the home base station management system (HMS) with the obtained network element information.
  • HMS home base station management system
  • the obtained network element information includes: a new wireless side network element/new home base station gateway moving from The dynamic management entity or the network element information obtained from the original wireless side network element.
  • the network element information that is configured by the new wireless side network element/new home base station gateway or the HMS is: the network element information that the new wireless side network element/new home base station gateway can currently connect to;
  • the information includes: a local gateway/new wireless side network element/new home base station gateway capable of connecting local gateway/radio side network element/home base station gateway identification information;
  • the network element information obtained from the mobility management entity/original radio side network element includes: original local gateway/original radio side network element/original home base station gateway identification information of the local IP connection, and an optional local IP access connection. Instructions.
  • the new wireless side network element/new home base station gateway receives the message from the mobility management entity, and parses the original local gateway/original wireless side network element/original home of the local IP connection carried in the message. After the identification information of the base station gateway or the indication information of the local IP access connection, it is explicitly determined whether the local IP access connection has mobility determination;
  • the original local gateway/original wireless connection with the local IP by using the identification information of the local gateway/radio side network element/home base station gateway to which the new local gateway/new wireless side network element/new home base station gateway can connect
  • the identification information of the side network element/original home base station gateway is compared to determine whether there is a new wireless side network element/new home base station gateway, and the original local gateway/original wireless side network element/original home base station gateway connected to the local IP exists. Interface, and complete the judgment of whether the local IP access connection has mobility.
  • the mobility processing is an activation process; and the activation process includes: the mobility management entity activates a local IP access connection.
  • the mobility processing is a release processing; the release processing includes: the new wireless side network element/new home base station gateway instructing the mobility management entity to release the current local IP access connection.
  • the method further includes: the original mobile The sexual management entity transmits the identification information of the original local gateway/original radio side network element of the local IP access connection and the indication information of the optional local IP access connection to the new mobility management entity.
  • the method further includes: the new wireless side network element transmitting the identification information of the new local gateway/new wireless side network element/new home base station gateway to the new mobility management entity.
  • the identifier information of the new local gateway/original local gateway includes: address information of the new local gateway/original gateway, or dedicated identifier information for identifying a new local gateway/original local gateway identity;
  • the identifier information of the new radio side network element/original radio side network element includes: address information of the new radio side network element/original radio side network element, or used to identify the new radio side network element/original radio side network element identity Dedicated identification information;
  • the identification information of the local gateway/radio side network element/home base station gateway that the new local gateway/new wireless side network element/new home base station gateway can connect includes: address information of the local gateway/radio side network element/home base station gateway Or special identification information used to identify the local gateway/wireless side network element/home base station gateway identity.
  • the new radio side network element/original radio side network element includes: a base station, a home base station, or a radio network controller RNC.
  • the new mobility management entity/original mobility management entity includes: a mobility management unit (MME), a mobile switching center (MSC), and a serving universal wireless packet service support node (SGSN).
  • MME mobility management unit
  • MSC mobile switching center
  • SGSN serving universal wireless packet service support node
  • the new local gateway/original local gateway includes: a local service gateway (L-SGW), a local packet data network gateway (L-PGW), a local gateway general wireless packet service support node (L-GGSN), or an external device. Local gateway (L-GW), or data offloading functional entity;
  • L-SGW local service gateway
  • L-PGW local packet data network gateway
  • L-GGSN local gateway general wireless packet service support node
  • L-GW data offloading functional entity
  • the access gateway of the core network includes: a Serving Gateway (SGW), or an SGSN.
  • SGW Serving Gateway
  • SGSN Serving Gateway
  • a local internet protocol access connection mobility support system comprising: a judging unit and a mobility processing unit; wherein a judging unit, configured to determine whether the local IP connection has mobility by the new radio side network element/new home base station gateway, where the determining includes: configuring the new radio side network element/new home base station gateway or the HMS The network element information is compared with the obtained network element information to implement the determining;
  • the mobility processing unit is configured to support corresponding mobility processing on the local IP access connection according to the determination result.
  • the obtained network element information includes: network element information obtained by the new wireless side network element/new home base station gateway from the mobility management entity or the original wireless side network element.
  • the determining unit is further configured to: the new radio side network element/new home base station gateway receives a message from the mobility management entity/original radio side network element, and parses the After the local IP gateway connects to the original local gateway/original radio side network element/original home base station gateway identification information, and the optional local IP access connection indication information, it is explicitly determined whether the local IP access connection has mobility determination;
  • the identification information of the wireless side network element/the original home base station gateway is compared to determine the new wireless side network element/new home base station gateway, and the original local gateway/original wireless side network element/original home base station gateway connected to the local IP access Whether there is an interface and whether the local IP access connection has a mobility judgment.
  • the mobility processing unit is further configured to perform an activation process when determining that the local IP access connection has mobility; wherein the activation process comprises: the mobility management entity activating a local IP access connection.
  • the mobility processing unit is further configured to: when it is determined that the local IP access connection does not have mobility, perform a release process, where the release process includes: the new wireless side network element/new home base station gateway indicates mobility
  • the management entity releases the current local IP access connection.
  • the new wireless side network element/new home base station gateway of the present invention determines whether the local IP connection has mobility; according to the judgment result, the corresponding mobility processing for the local IP access connection is supported; wherein, by the new wireless side network Meta/new home base station gateway configuration or home base station management system
  • the network element information delivered by the HMS (HNB Management System) is compared with the obtained network element information to implement the judgment.
  • support for the mobility of the local IP access connection is achieved by judging whether the local IP connection is mobile and performing corresponding mobility processing based on the judgment result.
  • 1 is a schematic diagram of a connection of an existing mobile communication network
  • 3 is another connection diagram of an existing mobile communication network
  • FIG. 4 is a schematic diagram of a local IP access data flow in an existing mobile communication system
  • FIG. 5 is a schematic diagram of a local IP access data flow after a terminal moves in a mobile communication system after adopting the present invention
  • FIG. 6 is a flowchart of activation of a local IP connection in a service request process in an LTE system according to the present invention
  • FIG. 7 is a flow chart of activation of a local IP connection in a service request process in a UTRAN system according to the present invention
  • FIG. 8 is a flow chart of activation of a local IP connection in a tracking area update process in an LTE system according to the present invention.
  • FIG. 9 is a flow chart showing activation of a local IP connection in a routing area update process in the UTRAN system of the present invention.
  • FIG. 10 is a flowchart of local IP connection activation in a handover process according to the present invention
  • FIG. 11 is a flowchart of local IP connection activation in a handover process in a UTRAN system according to the present invention
  • FIG. 12 is a schematic diagram of a terminal performing X2 handover in an LTE system according to the present invention
  • the new radio side network element/new home base station gateway judges whether the local IP connection has mobility; according to the judgment result, the corresponding mobility processing for the local IP access connection is supported. The judgment is implemented by comparing the network element information of the new radio side network element/new home base station gateway or the network element information sent by the HMS with the obtained network element information.
  • the data flow path of the local IP access and the traditional core network IP access after the terminal moves in the mobile communication network architecture is shown. Due to the particularity of the local IP access connection, that is, the data stream is directly transmitted from the wireless side network element and/or the home base station gateway. Therefore, after the terminal moves, the data flow accessed by the local IP needs to pass through the new wireless side network element and/or Home base station gateway, and the original local gateway.
  • the original local gateway is located in the vicinity of the original wireless side network element/home base station gateway, and it can be seen that whether the local IP access connection has mobility depends on the new wireless side network element and/or the home base station gateway, and the original local gateway. Is there an interface between the two? However, in the current prior art, there is no solution for judging whether or not there is an interface relationship between the two. Therefore, the prior art cannot implement the mobility of the local IP access connection.
  • the present invention provides an implementation scheme of local IP access connection mobility support to implement mobility of a local IP access connection.
  • the new wireless side network element/home base station gateway according to the original local gateway identification information of the local IP connection provided by the new mobility management entity or the original wireless side network element/home
  • the identification information of the base station gateway determines whether there is an interface between the new wireless side network element and/or the home base station gateway, the original local gateway identification information connected to the local IP, or the original wireless side network element/home base station gateway, and according to the judgment result, Mobility processing for corresponding activation or release of local IP access connections.
  • Step 101 A new radio side network element/home base station gateway determines whether the local IP connection has mobility.
  • the determination of whether the local IP connection has mobility includes: a network obtained by configuring the new radio side network element/new home base station gateway or the network element information sent by the HMS, and the network obtained by the new radio side network element/home base station gateway.
  • the meta-information is compared to determine whether the local IP access connection has mobility.
  • the new wireless side network element/new home base station gateway may obtain network element information from the mobility management entity or from the original wireless side network element.
  • Step 102 Support corresponding mobility processing of the local IP access connection according to the judgment result.
  • the mobility process includes activation or release.
  • the judgment result is different, and the corresponding mobility processing performed may be an activation or release process.
  • the new radio side network element/new home base station gateway configuration or the network element information delivered by the HMS is specifically: the new radio side network element / the new home base station gateway current Network element information that can be connected.
  • the network element information currently connected by the new wireless side network element/new home base station gateway specifically includes: a local gateway/new wireless side network element/new home base station gateway capable of connecting local gateway/radio side network element/home base station The identification information of the gateway.
  • the network element information obtained by the new radio side network element/new home base station gateway from the mobility management entity specifically includes: the original local gateway/original radio side network element/original home base station gateway identification information of the local IP connection, and may also include the local IP address. Instructions for accessing the connection.
  • the original local identification information/original wireless side network element identification information/original home base station gateway identification information refers to the original local identification information when the local IP access connection is established/the original wireless side network element identification information/the original home base station gateway identifier information.
  • Step 201 The new radio side network element/new home base station gateway receives the message from the mobility management entity, and parses the identifier of the original local gateway/original radio side network element/original home base station gateway of the local IP connection carried in the message. After the information, or the local IP access connection indication, it is clear that the local IP access connection needs to be judged whether it is mobile.
  • Step 202 The original local gateway/original wireless side connected to the local IP by the identification information of the local gateway/radio-side network element/home base station gateway that can be connected by the new local gateway/new wireless side network element/new home base station gateway.
  • the identification information of the network element/original home base station gateway is compared to determine whether there is an interface between the new local side network element/new home base station gateway and the original local gateway/original wireless side network element/original home base station gateway connected to the local IP address. And complete the judgment of whether the local IP access connection has mobility.
  • the new wireless side network element/new home base station gateway when the new wireless side network element/new home base station gateway is determined, the original local gateway/original wireless side network element/original home base station gateway connected to the local IP is determined. Whether there is an interface between them, that is, the judgment result is specifically:
  • the currently performed mobility processing is specifically an activation process.
  • the activation includes: The mobility management entity activates the local IP access connection.
  • the new wireless side network element/new home base station gateway is determined, whether there is an interface between the original local gateway/original wireless side network element/original home base station gateway connected to the local IP, that is, the judgment result is specifically: local IP
  • the currently performed mobility processing is specifically a release process.
  • the release process specifically includes: The new wireless side network element/new home base station gateway instructs the mobility management entity to release the current local IP access connection.
  • the method further includes: the original mobility management entity accesses the identity information of the original local gateway/original radio side network element of the connection by the local IP, and may also include an indication of the local IP access connection. Information is passed to the new mobility management entity.
  • the method further includes: the new wireless side network element transmitting the identification information of the new local gateway/new wireless side network element/new home base station gateway to the new Mobility management entity.
  • the following describes the identification information of each network element entity and each network element entity.
  • the identification information of the new local gateway/original local gateway specifically includes: address information of the new local gateway/original gateway, or dedicated identification information for identifying the identity of the new local gateway/original local gateway.
  • the identifier information of the new radio side network element/original radio side network element includes: address information of the new radio side network element/original radio side network element, or used to identify the new radio side network element/original radio side network element identity Dedicated identification information.
  • the identification information of the local gateway/radio side network element/home base station gateway that the new local gateway/new wireless side network element/new home base station gateway can connect includes: local address/radio side network element/home base station gateway address Information, or dedicated identification information used to identify the local gateway/wireless side network element/home base station gateway identity.
  • the new radio side network element/original radio side network element specifically includes: a base station, a home base station, or a Radio Network Controller (RNC).
  • RNC Radio Network Controller
  • the new mobility management entity/original mobility management entity specifically includes: an MME, a Mobile Switching Centre (MSC), and an SGSN.
  • MME Mobile Management Entity
  • MSC Mobile Switching Centre
  • the new local gateway/original local gateway specifically includes: L-SGW, L-PGW, L-GGSN, external L-GW, or data offload function entity.
  • the access gateway of the core network specifically includes: an SGW or an SGSN.
  • the new wireless side network element/home base station gateway is expressed as follows:
  • the wireless side network element and the home base station gateway are all new, and the following is not described; similarly, for example, The following descriptions of the original wireless side network element/home base station gateway refer to:
  • the wireless side network element and the home base station gateway are all original. In short, the following descriptions about new or original are similar to the meaning here, and are not mentioned below.
  • the mobility management entity is not always new. There is also an original mobility management entity that sends information to the new base station.
  • the invention mainly includes the following contents:
  • the new wireless side network element/home base station gateway determines the new wireless side network element according to the original local gateway identification information from the new mobility management entity or the identification information of the original wireless side network element/home base station gateway and the indication information of the local IP access connection. Whether there is an interface between the home base station gateway and the original local gateway or the original wireless side network element/home base station gateway, that is, whether the local IP access connection has mobility.
  • the new wireless side network element/home base station gateway determines the new wireless side network element/home base station gateway and the original local area according to the local gateway or the wireless side network element/home base station gateway information that the new wireless side network element/home base station gateway can connect to. Whether there is an interface between the gateway or the original wireless side network element/home base station gateway, that is: whether the local IP access connection has mobility.
  • the new mobility management entity activates the local IP access connection; when the local IP access connection does not have mobility, the new wireless side network element/home base station gateway instructs the new mobility management entity to release This local IP access connection.
  • the original mobility management entity forwards the original local gateway identification information of the local IP access connection or the original wireless side network element identification information, and the indication information of the local IP access connection to the new mobility management entity.
  • the new radio side network element transmits the identification information of the local gateway/radio side network element/home base station gateway to the mobility management entity.
  • the identifier information of the local gateway may be an address of the local gateway or a dedicated identification information.
  • the identifier information of the wireless side network element may be an address of the wireless side network element or a specific identification information.
  • the wireless side entity may be a base station, a home base station, or an RNC.
  • the mobility management entity may be an MME, an MSC, or an SGSN.
  • the local gateway may be an L-SGW, an L-PGW, an L-GGSN, an external L-GW, and a data offloading functional entity.
  • the core network access gateway may be an S-GW or an SGSN.
  • the L-SGW and the L-PGW do not exist.
  • the MME performs message interaction with the L-GW or the data offload function entity, and no L-SGW or L-PGW participates.
  • the L-GGSN does not exist.
  • the SGSN performs message interaction with the L-GW or the data offloading function entity, and no L-GGSN participates.
  • the invention is illustrated by way of example below.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • FIG. 6 is a schematic diagram of the system architecture of FIG. 1, FIG. 2 or FIG. 3, the local gateway is an L-PGW, an L-SGW, an L-GW, and a data offloading functional entity scenario, where the terminal is idle in the LTE system.
  • the local local service gateway of the local IP connection is an L-SGW
  • the original local access gateway is an L-PGW, an L-GW, and a data offloading function entity.
  • the mobility management entity When the terminal is idle, the mobility management entity needs to save the local gateway of the local IP connection, such as the L-PGW, the L-SGW, the external L-GW, or the identification information of the data offloading function entity, and can save the wireless IP network of the local IP connection.
  • Meta identification message The identifier information of the L-PGW, the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 401 After the terminal accesses the wireless communication system, the terminal has a local IP access connection, and then the terminal enters an idle state.
  • Step 402 The terminal sends a service request message to the mobility management entity via the new radio side network element.
  • the message sent by the radio side network element to the mobility management entity may carry the identification information of the new radio side network element, and may carry the identification information of the new local gateway, such as the L-PGW and the L-SGW.
  • the local gateway adopts an external L-GW or a data offloading function entity, it needs to carry the identification information of the L-GW or the data offloading function entity.
  • the identifier information of the L-PGW, the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the mobility management entity can be an MME.
  • Step 403 Perform an authentication and authentication process of a non-access stratum (NAS, Non-Access-Stratum), and the step is optional.
  • NAS Non-Access-Stratum
  • Step 404 The mobility management entity sends an initial context setup request message to the new radio side network element.
  • the message needs to carry the original L-SGW identification information of the local IP access connection; or the original wireless side network element identification information carrying the local IP access connection; or when the local gateway adopts an external L-GW or a data offloading function entity At the same time, it is required to carry the identification information of the original L-GW or the original data offloading function entity of the local IP access connection. At the same time, it can also carry the indication information of the local IP access connection to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the mobility management entity may not carry the above information in the sent message.
  • Step 405 The new radio side network element receives the message. If the message carries the indication information of the local IP access connection, it is determined according to the parameter carried in the message whether the local IP connection can be reactivated after the terminal moves, that is: whether there is a mobile Sex. If the message does not carry the indication information of the local IP access connection, the information may be determined according to whether the original L-SGW identification information or the original radio side network element identification information or the original L-GW identification information or the identification information of the original data distribution function entity is carried. Whether to make the judgment described in this step. Otherwise continue the normal business request process in the prior art.
  • the new radio side network element determines the new radio side network element according to the L-SGW information that can be connected and the original L-SGW identification information. Whether there is an interface between the original L-SGWs.
  • the L-SGW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS. If the message carries the original wireless side network element identification information of the local IP access connection, the new wireless side network element determines the new wireless side network element according to the wireless side network element information that can be connected and the identification information of the original wireless side network element.
  • the information of the radio side network element that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GW information that can be connected and the original L-GW identification information. - Whether there is an interface between the GWs.
  • the L-GW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the data distribution function entity information and the identification information of the original data distribution function entity that can be connected. Whether there is an interface with the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to be mobile.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 406a According to the judgment result of step 405, if the local IP access connection has mobility, the new radio side network element needs to initiate a radio side bearer establishment procedure of the local IP access connection.
  • the radio side bearer establishment procedure of the core network connection needs to be initiated regardless of whether or not the mobility is available. That is, whether it is mobile or not The normal activation process of the core network connection.
  • the new radio side network element performs a radio bearer setup process.
  • Step 407a The radio side network element responds to the mobility management entity initial context setup complete message.
  • Step 408a The mobility management entity initiates a bearer modification process to the original L-SGW.
  • the original L-SGW and the original L-PGW may carry out the bearer modification process.
  • Step 406b According to the judgment result of step 405, if the local IP access connection does not have mobility, the mobility management entity needs to initiate a local IP access connection release procedure. If the user has a core network connection at the same time, the wireless side bearer establishment process of the core network connection needs to be initiated regardless of mobility. That is, whether it is mobile or not, it does not affect the normal activation process of the core network connection.
  • the new radio side network element responds to the mobility management entity with an initial context setup complete message or an initial context setup failure message. If the user only has a local IP access connection, it needs to respond to the initial context establishment failure message, carrying a specific cause value, indicating that the local IP access connection cannot be established. If the user has a core network connection at the same time, after the radio side bearer is established for the core network connection, the initial context setup complete message or the initial context setup failure message is responded to according to the radio bearer setup situation, and the message needs to carry a specific cause value. , indicating that a local IP access connection could not be established.
  • Step 407b The mobility management entity initiates a session release process to the original L-SGW.
  • Step 408b The original L-SGW performs a session release process with the original L-PGW.
  • the local IP access connection is released as an example.
  • the local IP access connection can also be converted to the core network connection. This process is the same as the prior art. No longer detailed.
  • Embodiment 2 After the downlink data triggers the network to initiate paging to the idle state user, the user initiates a service request procedure to activate the connection. At this time, whether the local IP access connection is activated is the same as the process of FIG. 4, and details are not described herein.
  • Embodiment 2 is the same as the process of FIG. 4, and details are not described herein.
  • the local gateway is an L-GGSN, an L-GW, and a data offloading functional entity scenario.
  • Radio Access Network A flowchart of a service request process when a terminal transitions from an idle state to a connected state.
  • the original local access gateway is an L-GGSN, an L-GW, and a data offloading functional entity. The specific steps in this embodiment are described as follows:
  • the mobility management entity When the terminal is idle, the mobility management entity needs to save the local gateway of the local IP connection, such as the identification information of the L-GGSN, the external L-GW, and the data offloading function entity, and can store the identification information of the radio side network element of the local IP connection.
  • the identifier information of the L-GGSN, the L-GW, the data offloading function entity, and the radio side network element may be address information or a specific identifier.
  • Step 501 After the terminal accesses the wireless communication system, the terminal has a local IP access connection, and then the terminal enters an idle state.
  • Step 502 The terminal sends a service request message to the mobility management entity via the new radio side network element.
  • the message sent by the new radio side network element to the mobility management entity may carry the new radio side network element identification information, and may carry the new local gateway, such as the identification information of the L-GGSN.
  • the local gateway adopts an external L-GW or a data offloading function entity, it needs to carry the identification information of the L-GW or the data offloading function entity.
  • the identifier information of the L-GGSN, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the mobility management entity is the SGSN.
  • Step 503 Perform an authentication process of the NAS, and the step is optional.
  • Step 504 The mobility management entity sends a radio access bearer allocation request message to the new radio side network element.
  • the message needs to carry the original L-GGSN identification information of the local IP access connection; or the original wireless side network element identification information carrying the local IP access connection; or when the local gateway uses the external L-GW or the data offloading function entity In the mode, the original L-GW that needs to carry the local IP access connection Or the identification information of the data offloading function entity.
  • the local IP access connection indication information may be carried to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-GGSN, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the mobility management entity may not carry the above information in the sent message.
  • Step 505 The new radio side network element receives the message. If the message carries the indication information of the local IP access connection, it is determined according to the parameter carried in the message whether the local IP connection can be reactivated after the terminal moves, that is, whether the mobility is available. . If the message does not carry the indication information of the local IP access connection, the information may be determined according to whether the original L-GGSN identification information or the original radio side network element identification information or the original L-GW identification information or the identification information of the original data distribution function entity is carried. Whether to make the judgment described in this step. Otherwise continue the normal business request process in the prior art.
  • the message carries the original L-GGSN identification information of the local IP access connection
  • the original radio side network element identification information is not carried, and the new radio side network element is based on the L-GGSN information that can be connected and the original L-GGSN identifier.
  • the information is used to determine whether an interface exists between the new radio side network element and the original L-GGSN.
  • the L-GGSN information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new radio side network element If the message carries the original L-GW identification information of the local IP access connection, and does not carry the original radio side network element identification information, the new radio side network element according to the L-GW information that can be connected and the original L-GW identification information, Determine whether there is an interface between the new wireless side network element and the original L-GW.
  • the L-GW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new wireless side network element If the message carries the original data offloading function entity identification information of the local IP access connection, the new wireless side network element according to the data shunting functional entity information and the original data shunting function that can be connected The identifier information of the entity determines whether an interface exists between the new wireless side network element and the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new wireless side network element can also determine the new wireless side network according to the wireless side network element information that can be connected and the identification information of the original wireless side network element. Whether there is an interface between the element and the original wireless side network element.
  • the information of the wireless side network element that can be connected to the new wireless side network element can be locally configured on the wireless side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to be mobile.
  • the identification information of the L-GGSN, the L-GW, the data offloading function entity, and the radio side network element may be address information or a specific identifier.
  • Step 506a According to the judgment result of step 505, if the local IP access connection has mobility, the new radio side network element needs to initiate a radio side bearer establishment procedure of the local IP access connection.
  • the radio side bearer establishment procedure for initiating the core network connection is required regardless of whether or not the mobility is available. That is, whether it is mobile or not, it does not affect the normal activation process of the core network connection.
  • the new radio side network element performs a radio bearer setup process.
  • Step 507a The radio side network element responds to the mobility management entity radio access bearer allocation response message.
  • Step 508a The mobility management entity may initiate a Packet Data Protocol (PDP) context 4 tampering procedure to the terminal.
  • PDP Packet Data Protocol
  • Step 509a The mobility management entity may initiate a PDP context modification flow to the original L-GGSN. Cheng.
  • Step 506b according to the judgment result of step 505, if the local IP access connection does not have mobility, the mobility management entity needs to initiate a local IP access connection release procedure. If the user has a core network connection at the same time, the wireless side bearer establishment process of the core network connection needs to be initiated regardless of mobility. That is, whether it is mobile or not, it does not affect the normal activation process of the core network connection.
  • the new radio side network element responds to the mobility management entity with a radio access bearer allocation response message or a radio access bearer allocation failure message. If the user only has a local IP access connection, it needs to respond to the radio access bearer allocation failure message, carrying a specific cause value, indicating that the local IP access connection cannot be established. If the core network connection exists at the same time, after the radio network bearer is established for the core network connection, the radio bearer allocation response message or the radio access bearer allocation failure message is responded according to the radio bearer establishment situation, and the message needs to carry a specific The cause value indicates that a local IP access connection could not be established.
  • Step 507b The mobility management entity initiates a PDP context deletion process to the original L-GGSN.
  • Step 508a The mobility management entity may initiate a PDP context deactivation process to the terminal.
  • the local IP access connection is not mobile, in this embodiment, the local IP access connection is released as an example. In this case, the local IP access connection can also be converted into a core network connection. This process is similar to the prior art. No longer detailed.
  • the user After the downlink data triggers the network to initiate paging to the idle user, the user initiates a service request procedure to activate the connection. At this time, whether the local IP access connection is activated is the same as the process of Figure 7, and will not be described in detail here.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the local gateway is an L-PGW, an L-SGW, an L-GW, and a data offloading functional entity scenario, where the terminal is in an idle state in the LTE system.
  • the local IP connection The original local service gateway is the L-SGW, and the original local access gateway is the L-PGW, the L-GW, and the data offloading function entity.
  • the mobility management entity When the terminal is idle, the mobility management entity needs to save the local gateway of the local IP connection, such as the L-PGW, the L-SGW, the external L-GW, and the identification information of the data offloading function entity, and can save the wireless side network element of the local IP connection.
  • Identification information The identifier information of the L-PGW, the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 601 After the terminal accesses the wireless communication system, the terminal has a local IP access connection, and then the terminal enters an idle state.
  • Step 602 The terminal in the idle state periodically initiates or changes the tracking area list due to the movement to initiate the tracking area update process.
  • the terminal sends a NAS message, that is, the tracking area update request to the wireless side network element currently serving the terminal.
  • the wireless side network element may be different from the wireless side network element before the terminal enters the idle state.
  • the terminal sends the tracking area update request to the wireless side network element that is currently serving the terminal, where the wireless side network element is collectively referred to as the new wireless side network element; the terminal enters the wireless side network element before the idle state, where the wireless side network element They are collectively referred to as the original wireless side network element, and are not described below.
  • the wireless side network element selects the current mobility management entity for the user, that is, collectively referred to as a new mobility management entity, and includes the tracking area update request in the initial user message/up and down message transmission message and sends it to the new mobility management entity. .
  • the message sent by the wireless side network element to the mobility management entity may carry the new wireless side network element identification information, and may carry the identification information of the new local gateway, such as the L-PGW and the L-SGW.
  • the local gateway uses the external L-GW or the data offloading function entity, it needs to carry the identifier information of the L-GW or the data offloading function entity.
  • the identifier information of the L-PGW, the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the mobility management entity is the MME, and the new mobility management entity and the mobility management entity before the terminal enters the idle state, that is, may be the same as the original mobility management entity. Step 603: When the new mobility management entity is different from the original mobility management entity, the new mobility management entity initiates an upper and lower user acquisition process to the old mobility management entity.
  • Step 604 The original mobility management entity includes the context information of the user in the context response message and sends the context information to the new mobility management entity.
  • the message needs to carry the original L-SGW identification information of the local IP access connection; or the original wireless side network element identification information carrying the local IP access connection; or when the local gateway adopts an external L-
  • the GW or the data offloading function entity is in a manner, it needs to carry the identification information of the original L-GW or the original data offloading function entity of the local IP access connection.
  • it can also carry the indication information of the local IP access connection, to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offloading function entity, and the radio side network element may be address information or a specific identifier.
  • Step 605 The new mobility management entity may initiate an authentication and authentication process for the user.
  • Step 606 The new mobility management entity saves the information carried in step 604 and responds to the original mobility management entity with a context confirmation message.
  • Step 607 The new mobility management entity selects the original L-SGW for the local IP access connection, and initiates a bearer update process to the original L-SGW.
  • the original L-SGW may initiate a loading update process to the original L-PGW.
  • the new mobility management entity When the user has a core network connection, the new mobility management entity also needs to initiate a session establishment or bearer update procedure for the core network connection.
  • Step 608 The new mobility management entity initiates a location update process to the authentication authority server.
  • Step 609 The authentication authorization server initiates a location deletion process to the original mobility management entity.
  • the original mobility management entity may initiate a session deletion process for the core network connection.
  • Step 610 When the routing area update request sent by the terminal does not carry the activation flag, and the new mobility management entity decides not to activate the user's bearer, the new mobility management entity sends the routing area update to the terminal, and then directly performs step 615. , step 616. At this point the local IP access connection is If the service request is to be activated, the process is performed according to the process of FIG. 6.
  • the mobility management entity moves to the new wireless.
  • the side network element sends an initial context setup request message and simultaneously sends a routing area update accept message. The message needs to carry the original IP access connection.
  • the L-SGW identification information or the original radio side network element identification information carrying the local IP access connection; or when the local gateway uses the external L-GW or the data offloading function entity, the original L needs to carry the local IP access connection - GW or identification information of the original data offload function entity.
  • the indication information of the local IP access connection may be carried to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the wireless side network element does not change, that is, the new wireless side network element is the same as the original wireless side network element, and the mobility management entity may not carry the above information in the sent message.
  • Step 611 The new radio side network element receives the message. If the message carries the indication information of the local IP access connection, it is determined according to the parameter carried in the message whether the local IP connection can be reactivated after the terminal moves, that is, whether the mobility is available. . If the message does not carry the indication information of the local IP access connection, the information may be determined according to whether the original L-SGW identification information or the original radio side network element identification information or the original L-GW identification information or the identification information of the original data distribution function entity is carried. Whether to make the judgment described in this step. Otherwise, the normal routing area update request process in the prior art is continued.
  • the new radio side network element determines the new radio side network element and the original L according to the L-SGW information that can be connected and the original L-SGW identification information. - Whether there is an interface between the SGWs.
  • the L-SGW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS. If the message carries the original wireless side network element identification information of the local IP access connection, the new wireless side network element determines the new wireless side network element according to the wireless side network element information that can be connected and the identification information of the original wireless side network element.
  • the information of the radio side network element that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GW information that can be connected and the original L-GW identification information. - Whether there is an interface between the GWs.
  • the L-GW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the data distribution function entity information and the identification information of the original data distribution function entity that can be connected. Whether there is an interface with the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to be mobile.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Steps 612a-614a are the same as steps 406a-408a.
  • Steps 612b-614b are the same as steps 406b-408b.
  • Steps 615, 616 the new radio side network element forwards the new mobility management entity to send the routing area update accept message to the terminal.
  • the terminal may respond to the routing area update complete message.
  • the local IP access connection is not mobile, in this embodiment, the local IP access connection is released as an example. In this case, the local IP access connection can also be converted into a core network connection. This process is similar to the prior art. No longer detailed.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • FIG. 9 is a schematic diagram of the system in FIG. 1, FIG. 2 or FIG. 3, the local gateway is an L-GGSN, an L-GW, and a data offloading functional entity scenario, and the terminal in the UTRAN system is changed from an idle state to a connected state.
  • the original local access gateway of the local IP connection is an L-GGSN, an L-GW, and a data offloading functional entity.
  • the specific steps in this embodiment are as follows:
  • the mobility management entity needs to save the local gateway of the local IP connection, such as
  • the identification information of the L-GGSN, the external L-GW, and the data offloading function entity can store the identification information of the radio side network element of the local IP connection.
  • the identifier information of the L-GGSN, the L-GW, the data offloading function entity, and the radio side network element may be address information or a specific identifier.
  • Step 701 After the terminal accesses the wireless communication system, the terminal has a local IP access connection, and then the terminal enters an idle state.
  • Step 702 The terminal in the idle state initiates the routing area update process periodically or because the routing area changes due to the movement.
  • the terminal sends a NAS message, that is, the routing area update requests the new radio side network element.
  • the wireless side network element may be different from the original wireless side network element.
  • the wireless side network element selects a new mobility management entity currently served by the user, and sends the information according to the area update request to the new mobility management entity in the initial user message/direct transmission message.
  • the message sent by the radio side network element to the mobility management entity may carry the new radio side network element identification information, and may carry the new local gateway, such as the L-GGSN identification information.
  • the local gateway adopts the external L-GW or the data offloading function entity, it needs to carry the identification information of the L-GW or the data offloading function entity.
  • the identifier information of the L-GGSN, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Mobility management entity is SGSN, new move The active management entity may be the same as the original mobility management entity.
  • Step 703 When the new mobility management entity is different from the original mobility management entity, the new mobility management entity initiates an upper and lower user acquisition process to the original mobility management entity.
  • Step 704 The original mobility management entity includes the context information of the user in the context response message and sends the context information to the new mobility management entity.
  • the message needs to carry the original L-GGSN identification information of the local IP access connection; or the original wireless side network element identification information carrying the local IP access connection; or when the local gateway adopts an external L-
  • the GW or the data offloading function entity is in a manner, it needs to carry the identification information of the original L-GW or the original data offloading function entity of the local IP access connection.
  • it can also carry the indication information of the local IP access connection, to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-GGSN, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • the new mobility management entity saves the information passed by the original mobility management entity. At this time, whether the local IP access connection is activated or not is processed according to the process of Figure 7 when the service is requested.
  • Step 705 Continue the existing process of updating the existing routing area.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the local access gateway is an L-PGW, an L-SGW, an L-GW, and a data offloading functional entity scenario.
  • the original local service gateway of the local IP connection is the L-SGW
  • the original local access gateway is the L-PGW, the L-GW, and the data offloading function entity.
  • Step 801 The terminal periodically detects the radio signal of the local cell and other neighboring cells, and reports the radio signal to the original radio side network element in the form of a measurement report.
  • the original radio side network element finds that the cell signal accessed by the terminal is lower than the threshold and cannot provide a connection for the user, then a new radio side network element with a suitable signal strength is selected to initiate the handover process.
  • Step 802 The original radio side network element sends a handover request message to the mobility management entity, where the message may carry information of the new radio side network element.
  • the information of the new radio side network element includes, but is not limited to, the network element identifier, the closed user group identifier to which the network element belongs, and the like.
  • the mobility management entity is an MME.
  • the mobility management entity may change.
  • the mobility management entity that is the terminal service after handover is collectively referred to as the new mobility management entity, and the mobility management entity that is the terminal service before the handover is collectively referred to as the original mobility management entity.
  • the new mobility management entity is the original mobility management entity.
  • the mobility management entity does not change.
  • the process is similar to this embodiment, except that the original mobile new management entity needs to forward the handover request to the new mobility management entity.
  • the message includes the original L-SGW identification information of the local IP access connection, the original L-GW identification information, the original data distribution function entity identification information, or the original wireless side network element identification information of the local IP access connection;
  • the indication of the access connection is used to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • Step 803 The mobility management entity sends a handover request message to the new radio side network element, where the message needs to carry the original L-SGW identification information of the local IP access connection, or the original radio side network element identification information that carries the local IP access connection; or
  • the local gateway adopts an external L-GW or a data offloading function entity, it needs to carry the identification information of the original L-GW or the data offloading function entity of the local IP access connection.
  • it can also carry the indication information of the local IP access connection, to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 804 The new radio side network element receives the message. If the message carries the indication information of the local IP access connection, it is determined according to the parameter carried in the message whether the local IP connection can be reactivated after the terminal moves, that is, whether the mobility is available. . If the message does not carry the indication information of the local IP access connection, the information may be carried according to the original L-SGW identification information or the original wireless side network element identification information. The identification information of the original L-GW or the identification information of the original data offload function entity determines whether to perform the determination described in this step. Otherwise, the normal switching process in the prior art is continued.
  • the new radio side network element determines the new radio side network element and the original L according to the L-SGW information that can be connected and the original L-SGW identification information. - Whether there is an interface between the SGWs.
  • the L-SGW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the wireless side network element information that can be connected and the identification information of the original wireless side network element. Whether there is an interface with the original wireless side network element.
  • the information of the wireless side network element that can be connected to the new wireless side network element can be locally configured on the wireless side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GW information that can be connected and the original L-GW identification information. - Whether there is an interface between the GWs.
  • the L-GW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the data distribution function entity information and the identification information of the original data distribution function entity that can be connected. Whether there is an interface with the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to have a shift. Motivation.
  • the identifier information of the L-SGW, the L-GW, the data offload function, and the radio side network element may be address information or a specific identifier.
  • Step 805a According to the judgment result of step 804, if the local IP access connection has mobility, the new radio side network element needs to initiate resource reservation of the local IP access connection.
  • the resource reservation of the core network connection needs to be initiated regardless of whether or not there is mobility. That is, regardless of mobility, it does not affect the normal resource reservation process of the core network connection.
  • the new radio side network element performs a resource reservation process, and sends a handover confirmation message to the mobility management entity, and brings the address of the target radio side network element and the downlink tunnel identifier to the mobility management entity.
  • Step 806a The mobility management entity informs the original local access gateway of the wireless side network element address and the downlink tunnel identifier by using a bearer modification process, and opens a downlink channel for data transmission.
  • Step 805b According to the judgment result of step 804, if the local IP access connection does not have mobility, the mobility management entity needs to initiate a local IP access connection release procedure. If the user has a core network connection at the same time, the resource reservation process of the core network connection needs to be initiated regardless of mobility. That is, whether or not it has mobility, it does not affect the normal reservation process of the core network connection.
  • the new radio side network element responds to the mobility management entity with a handover confirmation message.
  • the message can carry a specific cause value indicating that a local IP access connection cannot be established.
  • Step 806b The mobility management entity determines, according to the cause value in the handover confirmation message, that the local IP access connection needs to be released; or the mobility management entity determines that the local IP access needs to be released according to the resource that is not successfully reserved in the handover confirmation message. connection. The mobility management entity releases the user's original local IP access connection through the bearer release process.
  • Step 807 Continue to complete the subsequent switching process.
  • FIG. 11 is a system architecture of the present invention in FIG. 1, FIG. 2 or FIG. 3, and the local access gateway is an L-GGSN, L-GW.
  • Data offload function based on the scenario, provides a flow chart of the handover process of the terminal in the UTRAN system.
  • the original local access gateway of the local IP connection is an L-GGSN, an L-GW, and a data offload function. The specific steps in this embodiment are described as follows:
  • Step 901 The terminal periodically detects the wireless signal of the local cell and other neighboring cells, and reports the wireless signal to the original wireless side network element in the form of a measurement report.
  • the original radio side network element finds that the cell signal accessed by the terminal is lower than the threshold and cannot provide a connection for the user, then a new radio side network element with a suitable signal strength is selected to initiate the handover process.
  • Step 902 The original radio side network element sends a relocation request message to the mobility management entity, where the message may carry information of the new radio side network element.
  • the information of the new radio side network element includes, but is not limited to, the network element identifier, the closed user group identifier to which the network element belongs, and the like.
  • the mobility management entity is the SGSN. When switching, the mobility management entity may change.
  • the mobility management entity that is the terminal service after handover is collectively referred to as the new mobility management entity, and the mobility management entity that is the terminal service before the handover is collectively referred to as the original mobility management entity.
  • the new mobility management entity is the original mobility management entity. In this embodiment, the mobility management entity does not change.
  • the process is similar to this embodiment, except that the original mobile new management entity needs to forward the relocation request to the new mobility management entity.
  • the original L-GGSN identification information of the local IP access connection or the original radio side network element identification information of the local IP access connection needs to be included in the message; or when the local gateway uses the external L-GW or the data offloading function entity
  • the identification information of the original L-GW or the original data offloading function entity that needs to carry the local IP access connection is similar to this embodiment, except that the original mobile new management entity needs to forward the relocation request to the new mobility management entity.
  • the indication information of the local IP access connection may be carried to indicate that the new wireless side network element connection is a local IP access connection, wherein the L-GGSN, the L-GW, the data offload function entity, and the identifier information of the wireless side network element may be
  • the address information can also be a specific identifier.
  • Step 903 The mobility management entity sends a relocation request message to the new radio side network element, where the message needs to carry the original L-GGSN identification information of the local IP access connection, or carries the original radio side network element identification information of the local IP access connection; Or when the local gateway uses an external L-GW or data When the function of the function entity is offloaded, the information of the original L-GW or the original data offloading function entity of the local IP access connection needs to be carried.
  • the local IP access connection indication information may be carried to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 904 The new radio side network element receives the message. If the message carries the indication information of the local IP access connection, it is determined according to the parameter carried in the message whether the local IP connection can be reactivated after the terminal moves, that is, whether the mobility is available. . If the message does not carry the indication information of the local IP access connection, the information may be determined according to whether the original L-SGW identification information or the original radio side network element identification information or the original L-GW identification information or the identification information of the original data distribution function entity is carried. Whether to make the judgment described in this step. Otherwise, the normal switching process in the prior art is continued.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GGSN information that can be connected and the original L-GGSN identification information. - Whether there is an interface between the GGSNs.
  • the L-GGSN information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the wireless side network element information that can be connected and the identification information of the original wireless side network element. Whether there is an interface with the original wireless side network element.
  • the information of the wireless side network element that can be connected to the new wireless side network element can be locally configured on the wireless side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GW information that can be connected and the original L-GW identification information. - Whether there is an interface between the GWs.
  • the information of the L-GW that the new radio side network element can connect to can be locally configured on the radio side network element, or can be notified to other network elements, such as the network management HMS. Line side network element.
  • the new wireless side network element determines the new wireless side network element according to the data distribution function entity information and the identification information of the original data distribution function entity that can be connected. Whether there is an interface with the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to be mobile.
  • the identification information of the L-GGSN, the L-GW, the data offloading function entity, and the radio side network element may be address information or a specific identifier.
  • Step 905a According to the judgment result of step 904, if the local IP access connection has mobility, the new radio side network element needs to initiate resource reservation of the local IP access connection.
  • the resource reservation of the core network connection needs to be initiated regardless of whether or not there is mobility. That is, regardless of mobility, it does not affect the normal resource reservation process of the core network connection.
  • the new radio side network element performs a resource reservation process, and sends a handover confirmation message to the mobility management entity, and brings the address of the new radio side network element and the downlink tunnel identifier to the mobility management entity.
  • Step 906a The mobility management entity initiates a PDP context modification process to the original L-GGSN.
  • Step 905b, # ⁇ 804 the result of the determination, if the local IP access connection does not have mobility, the mobility management entity needs to initiate a local IP access connection release procedure. If the user has a core network connection at the same time, the resource reservation process of the core network connection needs to be initiated regardless of mobility. That is, whether or not it has mobility, it does not affect the normal reservation process of the core network connection.
  • the new radio side network element responds to the mobility management entity with a handover confirmation message. Can be carried in the message A specific cause value indicating that a local IP access connection could not be established.
  • Step 906b The mobility management entity determines that the local IP access connection needs to be released according to the cause value in the handover confirmation message; or the mobility management entity determines that the local IP access needs to be released according to the resource in the handover confirmation message that the local IP access connection is not successfully reserved. connection. The mobility management entity releases the user's original local IP access connection through the bearer release process.
  • Step 907 Continue to complete the subsequent switching process.
  • FIG. 12 is a schematic diagram of the terminal in the LTE system provided on the basis of the system architecture of FIG. 1, FIG. 2 or FIG. 3, and the local access gateway is an L-PGW, L-SGW, L-GW, and data offloading functional entity scenario.
  • the original local service gateway of the local IP connection is an L-SGW
  • the original local access gateway is an L-PGW, an L-GW, and a data offloading function entity.
  • Step 1001 The terminal periodically detects the wireless signal of the local cell and other neighboring cells, and reports the report to the original wireless side network element in the form of a measurement report.
  • the original radio side network element finds that the cell signal accessed by the terminal is lower than the threshold and cannot provide a connection for the user, then the target radio side network element with a suitable signal strength is selected to initiate the handover process.
  • Step 1002 The original radio side network element sends a handover request message to the target side network element, where the message needs to carry the original L-SGW identification information of the local IP access connection; or the original radio side network element identification information that carries the local IP access connection; Or, when the local gateway adopts an external L-GW or a data offloading function entity, it needs to carry the identification information of the original L-GW or the original data offloading function entity of the local IP access connection. At the same time, it can also carry the indication information of the local IP access connection, to explicitly indicate that the new wireless side network element connection is a local IP access connection.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 1003 The new radio side network element receives the message, if the message carries a local IP access connection.
  • the indication information determines whether the local IP connection can be reactivated after the terminal moves according to parameters carried in the message, that is, whether it has mobility. If the message does not carry the indication information of the local IP access connection, the information may be determined according to whether the original L-SGW identification information or the original radio side network element identification information or the original L-GW identification information or the identification information of the original data distribution function entity is carried. Whether to make the judgment described in this step. Otherwise continue the normal X2 handover process in the prior art.
  • the new radio side network element determines the new radio side network element and the original L according to the L-SGW information that can be connected and the original L-SGW identification information. - Whether there is an interface between the SGWs.
  • the L-SGW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the wireless side network element information that can be connected and the identification information of the original wireless side network element. Whether there is an interface with the original wireless side network element.
  • the information of the wireless side network element that can be connected to the new wireless side network element can be locally configured on the wireless side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new radio side network element determines the new radio side network element and the original L according to the L-GW information that can be connected and the original L-GW identification information. - Whether there is an interface between the GWs.
  • the L-GW information that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the wireless side network element by other network elements, such as the network management HMS.
  • the new wireless side network element determines the new wireless side network element according to the data distribution function entity information and the identification information of the original data distribution function entity that can be connected. Whether there is an interface with the original data offload function entity.
  • the information of the data offloading function entity that can be connected to the new radio side network element can be locally configured on the radio side network element, or can be notified to the radio side network element by other network elements, such as the network management HMS.
  • the local IP access connection is considered to be mobile.
  • the identifier information of the L-SGW, the L-GW, the data offload function entity, and the radio side network element may be address information or a specific identifier.
  • Step 1004a According to the judgment result of step 1003, if the local IP access connection has mobility, the new radio side network element needs to initiate resource reservation of the local IP access connection.
  • the resource reservation of the core network connection needs to be initiated regardless of whether or not there is mobility. That is, regardless of mobility, it does not affect the normal resource reservation process of the core network connection.
  • the new radio side network element performs a resource reservation process, and sends a handover request acknowledgement message to the original radio side network element.
  • Step 1005a continue to complete the subsequent handover process.
  • step 1004b according to the judgment result of step 1003, if the local IP access connection is not mobile, the mobility management entity needs to initiate a local IP access connection release process, and the resources of the local IP access connection are not reserved at this time. If the user has a core network connection at the same time, the resource reservation process of the core network connection needs to be initiated regardless of whether it has mobility or not. That is, whether or not it has mobility, it does not affect the normal reservation process of the core network connection.
  • the new radio side entity sends a handover request acknowledgement message to the original radio side entity, and carries the resource information of the reservation success.
  • Step 1005b When the terminal only has a local IP access connection, the original radio side network element needs to send an RRC message to the terminal, where the message indicates that the handover fails.
  • the terminal When the terminal has a core network connection, the original wireless side network element needs to send a handover command message to the terminal, instructing the terminal to initiate the handover. At this time, the terminal sends a handover confirmation message to the new wireless side entity to notify the target wireless side network element that the air interface is synchronized.
  • Step 1006b The new radio side network element sends a path exchange request message to the mobility management entity. The message carries the resource of the local IP access connection that is not successfully reserved or the specific cause value indicates an indication that the local IP access connection fails to be switched.
  • the mobility management entity determines that the local IP access connection needs to be released according to the cause value in the handover confirmation message; or the mobility management entity determines that the local IP access connection needs to be released according to the resource in the handover confirmation message that the local IP access connection is not successfully reserved.
  • Step 1008b The mobility management entity releases the original local IP access connection of the user by using a bearer release process.
  • the above embodiments of the present invention are applied to local IP access connections without affecting the core network connection.
  • the core network connection is handled according to the prior art.
  • the above embodiment illustrates the method of supporting mobility for a local IP access connection only by taking the case where there is no home base station gateway and the local gateway is located at or near the wireless side entity.
  • the case where there is a home base station gateway is similar.
  • the message between the mobility management entity and the wireless side entity and the message between the mobility management entity and the local gateway will be transmitted via the home base station gateway.
  • the message between the mobility management entity and the wireless side entity will be transmitted via the home base station gateway, and the message between the mobility management entity and the local gateway
  • the home base station gateway forwarding information is no longer needed, and the wireless side network element identification information newly added in the message needs to be replaced by the identification information of the home base station gateway.
  • the manner of local IP access connection mobility support is very similar to the above embodiment, and will not affect the description of the present invention, so the description will not be repeated here.
  • the wireless side entity may be a base station or a home base station.
  • the mobility management entity may be an MME, an MSC, or an SGSN.
  • the local gateway may be an L-SGW, an L-PGW, an L-GGSN, an external L-GW, and a data offloading functional entity.
  • the core network access gateway may be an S-GW or an SGSN.
  • the wireless side network element/home base station gateway accessed by the local IP may be the same as the local access gateway address.
  • local IP access can refer to LIPA, the full name of which is represented by Local IP Access, but is not limited to this specific unique title.
  • Local IP access can also include one of the following: local IP access user Local network, local IP access to the company's local network, local IP access to the Internet, Internet or corporate or home business offloading operations, specific IP data offloading, are not mentioned below.
  • the local gateways mentioned above include: a local access gateway and a local service gateway.
  • a system for local IP access connection mobility support comprising: a judgment unit and a mobility processing unit.
  • the determining unit is configured to determine, by the new wireless side network element/new home base station gateway, whether the local IP connection has mobility; wherein the determining specifically includes: configuring the new wireless side network element/new home base station gateway by itself or from the HMS
  • the network element information sent is compared with the obtained network element information to implement the judgment.
  • the mobility processing unit is configured to support corresponding mobility processing on the local IP access connection according to the determination result.
  • the obtained network element information specifically includes: the network element information obtained by the new wireless side network element/new home base station gateway from the mobility management entity or the original wireless side network element.
  • the judging unit is further configured to: the new radio side network element/new home base station gateway receives the message from the mobility management entity, and parses out the original local gateway/original radio side network element/original home base station gateway carried in the message. After the identification information, and the optional local IP access connection indication, it is explicitly determined whether the local IP access connection has mobility determination; by identifying the new local gateway/new wireless side network element/new home base station gateway, Compare with the original local gateway/original wireless side network element/original home base station gateway identification information to determine the new local gateway/new wireless side network element/new home base station gateway, and the original local gateway/original wireless side network element/original Whether there is an interface between the home base station gateways and whether the local IP access connection has a mobility judgment.
  • the mobility processing unit has two specific implementations, the first specific implementation: the mobility processing unit is further configured to perform an activation process when determining that the local IP access connection has mobility; wherein the activation process specifically includes: mobility The management entity activates the local IP access connection.
  • the second specific implementation is: the mobility processing unit is further configured to perform a release process when determining that the local IP access connection does not have mobility; wherein, the releasing process specifically includes: the new wireless side network element/new home base station gateway indicating mobility
  • the management entity releases the current local IP access connection, and the indication may be an indication of display, or may be implicitly determined by the mobility management entity according to the content of the message returned by the new wireless side network element/new home base station gateway.

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  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé de prise en charge de mobilité de connexion d'accès par protocole Internet local. Le procédé comprend les opérations suivantes : un nouvel élément de réseau côté sans fil/une nouvelle passerelle de station de base domestique détermine si la connexion par protocole Internet (IP) locale possède de la mobilité ou non; en fonction du résultat de détermination, un traitement de mobilité correspondant à la connexion d'accès IP local est pris en charge. La détermination consiste à comparer les informations d'élément de réseau configurées par le nouvel élément de réseau côté sans fil lui-même/la nouvelle passerelle de station de base domestique elle-même aux informations d'élément de réseau obtenues, pour effectuer la détermination. La présente invention décrit un système de prise en charge de mobilité de connexion d'accès IP local; dans le système, une unité de détermination est utilisée dans le nouvel élément de réseau côté sans fil/la nouvelle passerelle de station de base domestique pour déterminer si la connexion IP locale possède de la mobilité ou non, et une unité de traitement de mobilité est utilisée pour prendre en charge, en fonction du résultat de détermination, le traitement de mobilité correspondant à la connexion d'accès IP local. Le procédé et le système de la présente invention permettent une prise en charge de mobilité de la connexion d'accès IP local.
PCT/CN2010/076395 2009-09-07 2010-08-26 Procédé et système de prise en charge de mobilité de connexion d'accès par protocole internet local WO2011026407A1 (fr)

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