WO2011097988A1 - 对本地ip数据进行管理的方法及移动通信系统 - Google Patents

对本地ip数据进行管理的方法及移动通信系统 Download PDF

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Publication number
WO2011097988A1
WO2011097988A1 PCT/CN2011/070652 CN2011070652W WO2011097988A1 WO 2011097988 A1 WO2011097988 A1 WO 2011097988A1 CN 2011070652 W CN2011070652 W CN 2011070652W WO 2011097988 A1 WO2011097988 A1 WO 2011097988A1
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Prior art keywords
network element
gateway
local gateway
side network
information
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PCT/CN2011/070652
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English (en)
French (fr)
Inventor
周娜
梁爽
王静
宗在峰
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中兴通讯股份有限公司
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Publication of WO2011097988A1 publication Critical patent/WO2011097988A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/20Manipulation of established connections
    • H04W76/22Manipulation of transport tunnels

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method for managing local IP data and a mobile communication system. Background technique
  • the 3rd Generation Partnership Project (3GPP) evolved Evolved Packet System (EPS) by the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network) Referred to as E-UTRAN, Mobility Management Entity (MME), Serving Gateway (S-GW), Packet Data Network Gateway (P-GW or PDN) GW), Home Subscriber Server (HSS), 3GPP's Authentication, Authorization and Accounting (AAA) server, Policy and Charging Rules Function (Policy and Charging Rules Function, Referred to as PCRF) entity and other supporting nodes.
  • FIG. 1 is a schematic diagram of an EPS system architecture according to the related art, where a mobility management entity is responsible for control planes such as mobility management, non-access stratum signaling processing, and user mobility management context management;
  • S-GW is with E - UTRAN-connected access gateway device, forwards data between E-UTRA and P-GW, and is responsible for buffering paging waiting data;
  • P-GW is EPS and packet data network (Packet Data Network, PDN for short)
  • the border gateway of the network is responsible for the access of the PDN and the forwarding of data between the EPS and the PDN; both the S-GW and the P-GW belong to the core network gateway.
  • 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 home base stations are affordability, convenience, low power output, and plug and play.
  • the home base station is a wireless side network element.
  • the home base station can be directly connected to the core network, as shown in Figure 1, or
  • the home network node gateway is connected to the core network by the logical network element, as shown in FIG. 2 , wherein the main functions of the home base station gateway are: verifying the security of the home base station, processing the registration of the home base station, and performing operation and maintenance management on the home base station. Configure and control the home base station according to the carrier's requirements, and exchange data between the core network and the home base station.
  • CSG which allows users to access one or more access restricted CSG celL home base stations
  • closed mode only the CSG user to which the home base station belongs can access the base station and enjoy the services provided by the base station.
  • the home base station is in the open mode, any user can access the base station, and the home base station at this time is equivalent to the macro base station.
  • the home base station is in the hybrid mode, the CSG user is allowed to access, and other users are allowed to access the service.
  • different user types are distinguished according to whether the user belongs to the CSG list, and differentiated quality of service processing is implemented, that is, Users of CSG are said to have higher service priorities when using hybrid home base stations, with better quality of service and service categories.
  • mobile communication systems can also support local IP access functions, which can be achieved under the condition that the wireless side network element has local IP access capability and the user subscribes to allow local IP access.
  • local IP access functions can be achieved under the condition that the wireless side network element has local IP access capability and the user subscribes to allow local IP access.
  • the local access of the terminal to other IP devices or the Internet of the home network.
  • the implementation of the local IP access can adopt multiple connection establishment modes: the core network access and the local IP access function can be simultaneously implemented by establishing a connection.
  • the function of adding the local gateway on the wireless side network element or the home base station gateway is not required;
  • the local gateway can also be provided with strong support for the local IP access technology.
  • the local gateway can be combined with the wireless side network element (as shown in Figure 1).
  • the local gateway acts as a gateway for external access to an external network (such as the Internet), and provides address allocation, charging, packet filtering, policy control, data offloading, and non-access layer (Non Access Stratum, NAS)/Sl application parts ( SI Application Part, Sl-AP) / Radios Access Network Application Part (RANAP) / General Tunneling Protocol (GTP) / Proxy Mobile IP (Proxy Mobile IP, referred to as PMIP) / Mobile IP (Mobile IP, MIP for short) message parsing, Network Address Translation (NAT) > and local IP access policy routing and execution can.
  • the local gateway can be combined with the wireless side network element.
  • the local gateway can be set/separated not only with the home base station, but also with the home base station gateway (as shown in FIG. 3).
  • the local gateway may be implemented by a local SGW (Local SGW, referred to as L-SGW) and a local PGW (Local PGW, called L-PGW), or may be implemented by L-PGW alone.
  • the home base station gateway can be combined with the home base station.
  • the core network gateway may be a Serving GPRS Support Node (SGSN) and a Gateway GPRS Support Node (Gateway GPRS Support Node, Referred to as GGSN).
  • SGSN Serving GPRS Support Node
  • GGSN Gateway GPRS Support Node
  • the local gateway may be implemented by a local GGSN (Local GGSN, abbreviated as L-GGS) and a local SGSN (Local SGSN, abbreviated as L-SGSN), or may be implemented separately by the L-GGSN.
  • L-GGS Local GGSN
  • L-SGSN Local SGSN
  • Figures 4 and 5 show schematic data flows of local IP connections in the wireless communication system of Figure 1.
  • LTE Long Term Evolution
  • Fig. 6 is a flow chart showing the process of performing a service request when the terminal is switched from the idle state to the connected state in the prior art. The specific steps are described as follows:
  • Step 601 The terminal has a local IP connection after accessing the wireless communication system, and then the terminal enters an idle state;
  • Step 602 The terminal sends a service request message to the mobility management entity via the radio side network element.
  • Step 603 Perform a NAS authentication process, where the step is optional.
  • Step 604 The mobility management entity sends an initial context setup request message to the radio side network element.
  • Step 605 The radio side network element performs a radio bearer setup process.
  • Step 606 The radio side network element responds to the mobility management entity initial context setup complete message.
  • Step 607 The mobility management entity sends a modify bearer request message to the serving gateway.
  • Step 608 The serving gateway sends a modify bearer request message to the local gateway to request to perform Bearer modification, this step is optional;
  • Step 609 The local gateway responds to the serving gateway to modify the bearer response message, and the step is optional.
  • step 608 is optional, and the modified bearer request message in the step does not currently notify the local gateway of the local IP data flow path. At this time, the wireless side network element or the local gateway cannot distinguish between FIG. 4 and FIG. 5 Transfer local IP data, resulting in abnormal processing of local IP access data.
  • the technical problem to be solved by the present invention is to provide a method for managing local IP data and a mobile communication system to implement effective management of local IP data in the case of local IP connection.
  • the present invention provides a method for managing local IP data.
  • the method includes:
  • the connection determining network element determines whether there is a connection between the current wireless side network element and the local gateway, and transmits the indication information to the local gateway according to the determination result, where the connection determination network element refers to a current wireless side network element, a mobility management entity or a serving gateway; and the local gateway processes the local IP data according to the indication information.
  • the connection determining network element determines whether there is a connection between the target wireless side network element and the local gateway, and transmits the indication information to the local gateway according to the determination result, where the connection determination network element refers to the original wireless side network. a source, a target radio side network element, an original mobility management entity, a target mobility management entity, or a serving gateway; and the local gateway processes the local IP data according to the indication information.
  • connection determining network element determines whether there is a connection between the current wireless side network element and the local gateway, or the step of determining whether the network element determines whether there is a connection between the target wireless side network element and the local gateway, if any of the following conditions exist
  • the connection determining network element determines that there is a connection between the current wireless side network element and the local gateway, or determines that there is a connection between the target wireless side network element and the local gateway:
  • An interface exists between the current wireless side network element or the target wireless side network element and the local gateway.
  • the current radio side network element or the target radio side network element is set up with the local gateway, or the current radio side network element or the target radio side network element is an initial radio side network element.
  • connection determining network element determines whether there is a connection between the current wireless side network element and the local gateway, or the connection determining network element determines whether the target wireless side network element and the local gateway exist.
  • connection determining network element is the wireless side network element, and the wireless side network element sends the indication information to the local gateway by using the existing or newly added message by using the mobility management entity or the serving gateway; or
  • connection determining network element is the mobility management entity, and the mobility management entity sends the indication information to the local gateway through a serving gateway by using an existing or newly added message;
  • connection determining network element is the serving gateway, and the serving gateway directly sends the indication information to the local gateway by using an existing or newly added message.
  • the indication information sent by the radio side network element to the mobility management entity is used to indicate whether there is a connection between the local gateway and the local gateway.
  • the indication information sent by the mobility management entity to the serving gateway is represented as follows:
  • the message carries an explicit tunnel establishment indication between the wireless side network element and the local gateway, or a connection between the wireless side network element and the local gateway. Or instruction;
  • the indication information sent by the serving gateway to the local gateway is represented by: the tunnel information carrying the radio side network element in the message or the indication of sending the downlink data to the radio side network element;
  • the step of the local gateway processing the local IP data according to the indication information after receiving the indication information, the local gateway forwards the downlink data to the radio side network element;
  • the indication information sent by the mobility management entity to the serving gateway is expressed in the following manner:
  • the information carries an explicit indication that the tunnel between the wireless side network element and the local gateway is not required to be established, or an indication of establishing a tunnel between the serving gateway and the local gateway, or information or indication that the wireless side network element and the local gateway are not connected.
  • the message does not carry an indication of establishing a tunnel between the wireless side network element and the local gateway;
  • the indication information sent by the serving gateway to the local gateway is represented by the following manner: the message does not carry the wireless side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway;
  • the local gateway In the step of processing, by the local gateway, the local IP data according to the indication information, after receiving the indication information, the local gateway forwards downlink data to the serving gateway.
  • the step of transmitting the indication information to the local gateway in the process of the terminal transitioning to the idle state, the step of transmitting the indication information to the local gateway:
  • the indication information sent by the radio side network element to the mobility management entity is information indicating whether there is a connection between the network side network element and the local gateway;
  • the indication information sent by the mobility management entity to the serving gateway is represented as follows:
  • the message carries an explicit connection or information between the wireless side network element and the local gateway, or releases between the wireless side network element and the local gateway.
  • the indication information sent by the serving gateway to the local gateway is represented by the following manner: the message carries an indication of releasing a tunnel between the wireless side network element and the local gateway, or an indication of establishing a tunnel between the serving gateway and the local gateway, or the terminal enters an idle state. Instructing, or performing an indication of data caching; in the step of processing, by the local gateway, the local IP data according to the indication information, after receiving the indication information, the local gateway releases the tunnel information between the radio side network element and the local gateway Establish a tunnel between the service gateway and the local gateway or perform data caching;
  • the indication information sent by the mobility management entity to the serving gateway and the indication information sent by the serving gateway to the local gateway are represented in the following manner: the message carries an indication that the terminal enters an idle state or an indication of performing data buffering; In the step of processing, by the local gateway, the local IP data according to the indication information, after the local gateway receives the indication information, performing data caching.
  • the wireless side network element is combined with a local gateway, and the local gateway buffers downlink data when the terminal is idle;
  • the indication information sent by the serving gateway to the local gateway is information for notifying the local gateway for data transmission; the local gateway according to the indication information In the step of processing the local IP data, after receiving the indication information, the local gateway sends the cached data to the terminal;
  • the service gateway sends the local gateway to the local gateway.
  • the sent indication information is information for notifying the local gateway to perform data transmission; in the step of processing, by the local gateway, the local IP data according to the indication information, after receiving the indication information, the local gateway sends the cached data to The service gateway forwards.
  • the step of transmitting the indication information to the local gateway during the location update or handover process :
  • connection determining network element is the original radio side network element, and the original radio side network element sends the indication information to the local gateway by using the original mobility management entity, the target mobility management entity, and the serving gateway; Or,
  • connection determining network element is the target radio side network element, and the target radio side network element sends the indication information to the local gateway by using the target mobility management entity and the serving gateway; or, the connection judgment
  • the network element is the original mobility management entity, and the original mobility management entity sends the indication information to the local gateway by using the target mobility management entity and the serving gateway; or, the connection determining network element is the target a mobility management entity, where the target mobility management entity sends the indication information to the local gateway through a serving gateway; or
  • connection determining network element is the serving gateway, and the serving gateway directly sends indication information to the local gateway.
  • the indication information and the information sent by the original radio side network element to the original mobility management entity are used to indicate the target radio side network element and Whether there is connection information between local gateways;
  • the indication information sent by the target mobility management entity to the serving gateway is represented as follows:
  • the message carries an explicit tunnel establishment indication between the target wireless side network element and the local gateway, or between the target wireless side network element and the local gateway. Information or instructions for the connection;
  • the indication information sent by the serving gateway to the local gateway is represented by: the message carrying the tunnel information of the target radio side network element or the indication of sending the downlink data to the target radio side network element; the local gateway according to the indication information In the step of processing the local IP data, after the handover or the location update is completed, the local gateway forwards the downlink data to the target radio side network element according to the indication information;
  • the indication information sent by the target mobility management entity to the serving gateway is represented by the following manner: the message carries an explicit indication that the tunnel between the target wireless side network element and the local gateway is not required to be established, or the service gateway and the local gateway are established.
  • the indication of the inter-tunnel, or the information or indication that the target radio side network element and the local gateway are not connected, or the message does not carry the indication of establishing a tunnel between the target radio side network element and the local gateway;
  • the indication information sent by the serving gateway to the local gateway is represented by the following manner: the message does not carry the target radio side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway; the local gateway is locally localized according to the indication information.
  • the local gateway forwards the downlink data to the serving gateway according to the indication information.
  • the present invention further provides a mobile communication system, which includes a wireless side network element, a local gateway, a mobility management entity, and a service gateway, where:
  • the wireless side network element, the mobility management entity or the service gateway includes:
  • the connection judging module is set to: in the process of requesting the service or the terminal entering the idle state, Determining whether there is a connection between the current wireless side network element and the local gateway, and notifying the information delivery module of the determination result; or determining whether there is a connection between the target wireless side network element and the local gateway during the handover or location update process, and determining the connection ⁇ notifying the information delivery module;
  • the information sending module is configured to: send the indication information to the local gateway according to the determination result; the local gateway is configured to: process the local IP data according to the indication information.
  • the connection determining module is configured to determine that there is a connection between the current wireless side network element and the local gateway or determine that there is a connection between the target wireless side network element and the local gateway when any of the following conditions exist:
  • An interface exists between the current wireless side network element or the target wireless side network element and the local gateway, or
  • the current radio side network element or the target radio side network element is set up with the local gateway, or the current radio side network element or the target radio side network element is an initial radio side network element.
  • connection judging module and the information sending module are in the radio side network element, the mobility management entity and the service gateway comprise an information delivery module; and the information sending module of the radio side network element is set to
  • the local gateway delivers the indication information: in the process of the service request or the terminal entering the idle state, sending, by using the existing or newly added message, the information delivery module of the mobility management entity and the service gateway to the local gateway Or the indication information; or, in the location update and handover process, the information sending module sends the information to the local gateway through the original mobility management entity, the target mobility management entity, and the information delivery module of the service gateway by using the existing or newly added message.
  • the indication information, or the target side network element sends the indication information to the local gateway through the information transfer module of the target mobility management entity and the service gateway by using an existing or newly added message; or
  • the connection judging module and the information sending module are in the mobility management entity, and the service gateway includes an information delivery module; the information sending module of the mobility management entity is configured to deliver the indication information to the local gateway in the following manner Transmitting, by the information delivery module of the service gateway, the indication information to the local gateway by using an existing or new message in the process of requesting or the terminal entering the idle state; or, in the location update and handover process, the original mobile
  • the information sending module of the sexual management entity sends the indication information to the local gateway through the information transfer module of the target mobility management entity and the service gateway by using the existing or newly added message, or the information sending module of the target mobility management entity Sending the indication information to the local gateway by using an existing or new message through an information delivery module of the service gateway; or
  • connection judging module and the information delivery module are in the service gateway, and the information delivery module is configured to deliver indication information to the local gateway as follows: directly send an indication to the local gateway by using an existing or newly added message. information.
  • the indication information sent by the information sending module of the wireless side network element to the information delivery module of the mobility management entity is information indicating whether there is a connection between the network gateway and the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the mobility management entity to the information delivery module of the service gateway is expressed in the following manner:
  • the message carries an explicit tunnel establishment indication between the wireless side network element and the local gateway, or Information or indication of connection between the wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is represented by the following manner: the message carrying the tunnel information of the radio side network element or the indication of sending the downlink data to the radio side network element;
  • the local gateway is configured to process local IP data according to the following manner: forwarding downlink data to the radio side network element according to the indication information;
  • the information sent by the information sending module or the information transmitting module of the mobility management entity to the information delivery module of the service gateway is represented by the following manner:
  • the message carries an explicit tunnel that does not need to establish a tunnel between the wireless side network element and the local gateway. Instructing, or establishing an indication of a tunnel between the serving gateway and the local gateway, or a message or indication that the wireless side network element is not connected to the local gateway, or the message does not carry an indication of establishing a tunnel between the wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is represented by the following manner: the message does not carry the wireless side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway;
  • the local gateway is configured to process local IP data in a manner of forwarding downlink data to the serving gateway according to the indication information.
  • the indication information sent by the information sending module of the wireless side network element to the information delivery module of the mobility management entity is information indicating whether there is a connection between the network gateway and the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the mobility management entity to the information delivery module of the service gateway is expressed in the following manner:
  • the message carries an explicit connection between the wireless side network element and the local gateway. Or indicating, or releasing an indication of a tunnel between the wireless side network element and the local gateway, or establishing an indication of a tunnel between the serving gateway and the local gateway, or an indication that the terminal enters an idle state, or an indication of performing data caching;
  • the indication information sent by the information sending module or the information delivery module of the serving gateway to the local gateway is represented by the following manner: the message carries an indication of releasing the tunnel between the wireless side network element and the local gateway, or establishing a tunnel between the serving gateway and the local gateway. Instructing, or an indication that the terminal enters an idle state, or an indication of data caching;
  • the local gateway is configured to process the local IP data in the following manner: releasing the tunnel information between the wireless side network element and the local gateway according to the indication information, establishing a tunnel between the service gateway and the local gateway, or performing data caching;
  • the indication information sent by the information transmission module or the information delivery module of the mobility management entity to the information delivery module of the service gateway and the indication information sent by the information transmission module or the information delivery module of the service gateway to the local gateway are expressed in the following manner:
  • the message carries an indication that the terminal enters an idle state or an indication of performing data caching;
  • the local gateway is configured to process local IP data as follows: data caching is performed according to the indication information.
  • the wireless side network element is combined with a local gateway, and the local gateway caches downlink data when the terminal is idle;
  • the connection determining module determines that there is a connection between the wireless side network element and the local gateway
  • the information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is information for notifying the local gateway to send the data;
  • the local gateway sends the cached data to the terminal according to the indication information.
  • the connection judgment network element determines that there is no connection between the wireless side network element and the local gateway, and the local gateway only maintains the service gateway tunnel information and does not save the wireless side network element tunnel information
  • the information of the service gateway is sent.
  • the indication information sent by the module or the information delivery module to the local gateway is information for notifying the local gateway for data transmission; the local gateway is configured to process the local IP data as follows: according to the indication information, the cached data is served to the service. Gateway forwarding.
  • the information sending module sent by the information sending module of the original wireless side network element to the information transmitting module of the original mobility management entity, and the information transmitting module of the target wireless side network element to the target mobility management entity The indication information sent by the module, and the indication information sent by the information sending module of the original mobility management entity to the information delivery module of the target mobility management entity are used to indicate whether the target wireless side network element and the local gateway exist. Connected information;
  • the indication information sent by the information sending module or the information delivery module of the target mobility management entity to the information delivery module of the serving gateway is expressed in the following manner:
  • the message carries an explicit tunnel establishment indication between the target wireless side network element and the local gateway. Or the information or indication of the connection between the target wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the serving gateway to the local gateway is represented by the following manner: the message carrying the tunnel information of the target radio side network element or the indication of sending the downlink data to the target radio side network element;
  • the local gateway is configured to process the local IP data according to the following manner: forwarding the downlink data to the target wireless side network element according to the indication information;
  • the information sending module or the information delivery module of the target mobility management entity to the service gateway The indication information sent by the information delivery module is expressed in the following manner:
  • the message carries an explicit indication that the tunnel between the target wireless side network element and the local gateway is not required to be established, or an indication of establishing a tunnel between the serving gateway and the local gateway, or
  • the information sending module or the information transmission module of the service gateway is localized
  • the indication information sent by the gateway is represented in the following manner: the message does not carry the target radio side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway;
  • the local gateway is configured to process the local IP data as follows: Forward the downlink data to the serving gateway according to the indication information.
  • the present invention also provides a method for managing local IP data, the method comprising:
  • the service gateway sends an indication to the local gateway to notify the local gateway to perform data transmission;
  • the local gateway After receiving the indication information, the local gateway forwards the data to the data receiving network element before the terminal enters the idle state.
  • the data receiving network element refers to a wireless side network element or a serving gateway.
  • the method for managing local IP data and the mobile communication system of the present invention determine whether there is a connection between a current or target wireless side network element and a local gateway in a service request, a terminal entering an idle state, a location update, or a handover process, In order to inform the local gateway to effectively process the local IP data, that is, the correct transmission or the data caching scene can be effectively distinguished, thereby ensuring the correct logical processing flow of the wireless communication system.
  • FIG. 1 is a schematic diagram 1 of a wireless communication network connection in the prior art
  • FIG. 1 is a schematic diagram 2 of a wireless communication network connection in the prior art
  • FIG. 3 is a schematic diagram 3 of a wireless communication network connection in the prior art
  • FIG. 4 is a schematic diagram 1 of a local IP access data flow of a wireless communication system in the prior art
  • FIG. 5 is a schematic diagram of a local IP access data flow of a wireless communication system in the prior art
  • FIG. 6 is a flow chart of a service request process when a terminal transitions from an idle state to a connected state in the prior art
  • Figure ⁇ is a flowchart of a service request process when a terminal transitions from an idle state to a connected state according to an embodiment of the present invention
  • FIG. 8 is still another flowchart of a service request process when a terminal transitions from an idle state to a connected state according to Embodiment 2 of the present invention.
  • FIG. 9 is a flowchart of a process for performing handover in a third terminal according to an embodiment of the present invention.
  • FIG. 10a is a flowchart of a process for performing location update by a terminal according to Embodiment 4 of the present invention.
  • FIG. 1 is a flowchart of a process for performing location update in a terminal according to Embodiment 5 of the present invention
  • FIG. 11a is a flowchart of a terminal entering an idle state according to Embodiment 6 of the present invention
  • FIG. 1 ib is still another flowchart of the seventh terminal entering the idle state according to Embodiment 7 of the present invention. Preferred embodiment of the invention
  • the method for managing local IP data of the present invention and the main idea of the mobile communication system of the present invention are: in the process of service request, terminal entering idle state, location update or handover, the current radio side network element or the target radio side network element and Whether there is a connection between the local gateways to determine whether the local gateway can effectively process the local IP data, that is, the correct transmission or the data caching scene can be effectively distinguished, thereby ensuring the correct logical processing flow of the wireless communication system.
  • the method for managing the local IP data of the present invention includes: A. In the process of the service request or the terminal entering the idle state, the connection determining network element determines that there is no current Whether there is a connection between the line side network element and the local gateway, and the indication information is transmitted to the local gateway according to the judgment result, where the connection determination network element refers to the current wireless side network element, the mobility management entity or the service gateway;
  • the connection determining network element determines whether there is a connection between the target wireless side network element and the local gateway, and transmits the indication information to the local gateway according to the determination result, where the connection determination network element refers to the original wireless side network.
  • the local gateway uses the indication information to process local IP data.
  • the following embodiment diagram illustrates an application scenario of an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) system based on an evolved universal mobile communication system.
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • FIG. 7 is a flow chart showing the process of requesting a service when the terminal is changed from the idle state to the connected state based on the system architecture of FIG. 1.
  • the mobility management entity determines whether there is a connection between the current wireless side network element and the local gateway. The specific steps are as follows:
  • Step 701 After the terminal accesses the wireless communication system, the terminal has a local IP connection, and then the terminal enters an idle state;
  • Step 702 The terminal initiates a service request to the mobility management entity by using the wireless side network element.
  • Step 703 Perform a Non-Access-Stratum (NAS) authentication process, where the step is optional.
  • NAS Non-Access-Stratum
  • Step 703a The mobility management entity determines whether there is a connection between the current wireless side network element and the local gateway.
  • the mobility management entity may determine whether there is a connection between the current wireless side network element and the local gateway by using the following method: After the step 702, the mobility management entity determines whether an interface exists between the current wireless side network element and the local gateway, or whether the interface is set up; Alternatively, the mobility management entity saves the initial radio side network element information, and after step 702, determines whether the initial radio side network element and the current radio side network element are the same;
  • the wireless side network element may determine whether there is a connection between the current wireless side network element and the local gateway, and then send the determination result to the mobility management entity: The wireless side network element determines whether there is an interface or whether it is set up with the local gateway. Or whether it is the initial radio side network element, and the information is determined by the radio side network element to determine the current radio side network element in step 702 or the mobility management entity sends the local gateway information or the initial radio side network element information of the terminal in step 704.
  • the mobility management entity is notified; at this time, if there is a connection, the wireless side network element uses the local gateway tunnel information to transmit the uplink data to the local gateway; if there is no connection, The wireless side network element uses the serving gateway tunnel information to transmit the uplink data to the serving gateway.
  • the current wireless side network element is connected to the local gateway.
  • Step 704 The mobility management entity sends an initial context setup request message to the radio side network element. If the mobility management entity determines that there is a connection between the current radio side network element and the local gateway, the initial context setup request message of step 704 carries the local Gateway tunnel information.
  • the initial context establishment request message of the step 704 carries the tunnel information of the serving gateway.
  • Step 705 The wireless side network element performs a radio bearer establishment process.
  • Step 706 The radio side network element responds to the mobility management entity initial context setup complete message. If the mobility management entity determines that there is a connection between the current radio side network element and the local gateway, perform the following steps 707 to 710:
  • Step 707 The mobility management entity sends a modify bearer request message to the serving gateway.
  • the mobility management entity delivers the indication information to the serving gateway according to the judgment result, and the indication information may be expressed in the following manner:
  • the message carries an explicit tunnel between the wireless side network element and the local gateway. Directly indicate or carry information or instructions that are connected between the current wireless side network element and the local gateway.
  • Step 708 The serving gateway sends a modify bearer request message to the local gateway.
  • the indication information that is delivered to the local gateway by the serving gateway is expressed in the following manner:
  • the indication that the current bearer request message carries the current radio side network element tunnel information or sends the downlink data to the radio side network element.
  • the local gateway After receiving the indication information, the local gateway forwards the downlink data to the radio side network element.
  • the indication information sent by the serving gateway to the local gateway in step 708 may be information for notifying the local gateway for data transmission; After receiving the indication information, the cached data is sent to the terminal; step 709 is not required at this time.
  • Step 709 The local gateway responds to the serving gateway with a modified response message.
  • Step 710 The serving gateway sends a response to the mobility management entity to modify the bearer response message.
  • the local gateway caches the downlink data when the terminal is idle, if the mobility management entity determines that there is no connection between the current wireless side network element and the local gateway, the following steps 707a to 710a are performed:
  • Step 707a The mobility management entity sends a modify bearer request message to the serving gateway.
  • the mobility management entity delivers the indication information to the serving gateway according to the determination result, and the indication information may be expressed in the following manner:
  • the modified bearer request message carries an explicit tunnel without establishing a radio side network element and the local gateway.
  • Step 708a The serving gateway sends a modify bearer request message to the local gateway.
  • the indication information that is delivered by the serving gateway to the local gateway is represented as follows:
  • the modify bearer request message does not carry the current radio side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway; the local gateway receives the After indicating the information, the downlink data is forwarded to the serving gateway.
  • the local gateway buffers downlink data when the terminal is idle, and the local gateway only maintains the serving gateway tunnel.
  • the indication information sent by the serving gateway to the local gateway to the local gateway in step 708a is information for notifying the local gateway to perform data transmission; after receiving the indication information, the local gateway will The cached data is forwarded to the serving gateway, and step 709a does not need to be performed at this time.
  • step 709a the local gateway responds to the monthly service gateway to modify the 7-load response message.
  • Step 710a The serving gateway responds to the mobility management entity with a modify bearer response message.
  • FIG. 8 is still another flow chart of the present invention, based on the system architecture of FIG. 1, providing a service request process when the terminal transitions from an idle state to a connected state.
  • the serving gateway saves the local gateway and the initial radio side network element information, and after step 707 (ie, in step 808), the serving gateway determines whether the current radio side network element and the initial radio side network element are the same or Determine whether there is an interface between the current wireless network element and the local gateway or whether it is set up.
  • step 707 ie, step 807), it is not necessary to carry an explicit tunnel establishment indication between the radio side network element and the local gateway or to carry information or an indication that the current radio side network element and the local gateway are connected.
  • the serving gateway determines whether there is a connection between the current wireless side network element and the local gateway.
  • the specific steps are as follows:
  • Step 801 After the terminal accesses the wireless communication system, the terminal has a local IP connection, and then the terminal enters an idle state.
  • Step 802 The terminal initiates a service request to the mobility management entity via the radio side network element.
  • Step 803 the NAS authentication process is performed, and the step is optional.
  • Step 803a The mobility management entity determines whether there is a connection between the current wireless side network element and the local gateway.
  • the mobility management entity may determine whether there is a connection between the current wireless side network element and the local gateway by using the following method: After the step 802, the mobility management entity determines whether an interface exists between the current wireless side network element and the local gateway, or whether the interface is set up; Alternatively, the mobility management entity saves the initial radio side network element information, and after step 802, determines whether the initial radio side network element and the current radio side network element are in phase. Same
  • the wireless side network element determines whether there is an interface or whether it is set up with the local gateway or whether it is the initial wireless side network element, and the information is notified to the mobility management entity in step 802.
  • the current wireless side network element is connected to the local gateway.
  • Step 804 The mobility management entity sends an initial context setup request message to the radio side network element. If the mobility management entity determines that there is a connection between the current wireless network element and the local gateway, the initial context setup request message of the step 804 carries the tunnel information of the local gateway.
  • the initial context establishment request message of the step 804 carries the tunnel information of the serving gateway.
  • the changeable step 804 carries the local gateway information of the terminal or the initial wireless side network element information, and the wireless side network element determines whether there is a connection between the current wireless side network element and the local gateway. If there is a connection, the wireless side network element uses the local gateway tunnel information to send the uplink data to the local gateway; if there is no connection, the wireless side network element uses the serving gateway tunnel information to transmit the uplink data to the serving gateway. Step 803a does not need to be performed at this time.
  • Step 805 The radio side network element performs a radio bearer setup process.
  • Step 806 The radio side network element responds to the mobility management entity initial context establishment complete message.
  • Step 807 The mobility management entity sends a modify bearer request message to the serving gateway.
  • Step 808 The serving gateway determines whether there is a connection between the current wireless side network element and the local gateway.
  • the method for the service gateway to determine whether there is a connection between the current wireless network element and the local gateway may be: before step 808, the monthly service gateway saves the local gateway and the initial wireless side network element information, and after step 807, the service gateway determines the current wireless side network. Whether the element is the same as the initial wireless side network element or whether there is an interface between the current wireless side network element and the local gateway or whether it is set up. If there is an interface between the current wireless network element and the local gateway, or the initial wireless side network element is the same as the current wireless side network element, it is considered that there is a connection between the current wireless side network element and the local gateway. If the serving gateway determines that there is a connection between the current wireless side network element and the local gateway, perform the following steps i 809 to 811:
  • Step 809 The serving gateway sends a modify bearer request message to the local gateway.
  • the indication information sent by the serving gateway to the local gateway is represented as follows:
  • the message carries the current wireless side network element tunnel information or sends the downlink data.
  • the indication information sent by the serving gateway to the local gateway in step 809 is information for notifying the local gateway to perform data transmission; After the indication information, the cached data is sent to the terminal, and step 810 is not required.
  • Step 810 The local gateway responds to the serving gateway with a modified response message.
  • Step 811 The serving gateway responds to the mobility management entity with a modify bearer response message.
  • Step 809a the serving gateway sends the modified bearer to the local gateway. Request message.
  • the indication information sent by the serving gateway to the local gateway in step 809a is represented by the foregoing manner:
  • the modify bearer request message does not carry the current wireless side network element tunnel information. Or carry an indication that the downlink data is sent to the serving gateway.
  • the indication information sent by the serving gateway to the local gateway in step 809a is to notify the local gateway to perform data. After the local gateway receives the indication information, the cached data is forwarded to the serving gateway, and step 810a is not required.
  • Step 810a The local gateway responds to the serving gateway with a modify bearer response message.
  • Step 811a The serving gateway responds to the mobility management entity with a modify bearer response message.
  • the present invention also proposes another solution: in the service request process
  • the serving gateway sends, to the local gateway, indication information that informs the local gateway to perform data transmission.
  • the local gateway sends the data to the data receiving network element (the wireless side network element or service) before the terminal enters the idle state.
  • Gateway forwarding. That is, in the process shown in FIG. 6, in step 608, the serving gateway carries the indication information for notifying the local gateway to perform data delivery in the modify bearer request sent to the local gateway, so that the local gateway finishes the service request process.
  • the data is forwarded to the radio side network element or the serving gateway before the terminal enters the idle state.
  • FIG. 9 is a flow chart of the process of the terminal switching according to the system of FIG. 1 according to the system of the present invention, and the specific steps are as follows:
  • Step 901 The radio side network element determines that the S1 switch needs to be initiated.
  • Step 902 The original radio side network element sends a handover request to the original mobility management entity.
  • Step 903 The relocation forward request message sent by the original mobility management entity to the target mobility management entity may carry the local gateway information.
  • the target mobility management entity may determine whether there is a connection between the current wireless side network element and the local gateway by using the following method:
  • the target mobility management entity determines whether there is an interface or a connection between the current wireless network element and the local gateway.
  • the original mobility management entity determines between the target wireless side network element and the local gateway before step 903. Whether the interface exists or not, and the target mobility management entity is notified in step 903; or the original mobility management entity saves the initial wireless side network element information, and determines the initial wireless side network element and the target wireless side network before step 903. Whether the element is the same, and the target mobility management entity is notified in step 903; or, the original wireless side network element determines whether there is an interface between the target wireless side network element and the local gateway or whether it is set up or whether it is the initial wireless side network element.
  • the target wireless side network element determines whether there is an interface or whether it is set up with the local gateway or whether it is initially The line side network element, and the information is notified to the target mobility management entity in step 907 (if notified in step 907, step 906 needs to carry the local gateway information of the terminal or the initial radio side network element information, by the target wireless side network element Determining whether there is a connection between the current wireless side network element and the local gateway; at this time, if there is a connection, the target wireless side network element uses the local gateway tunnel information to transmit the uplink data to the local gateway; if there is no connection, the target wireless side network The element uses the service gateway tunnel information to transmit the uplink data to the service gateway).
  • the target wireless side network element and the local gateway If there is an interface or a connection between the target wireless side network element and the local gateway, or the initial wireless side network element is the same as the target wireless side network element, it is considered that there is a connection between the current wireless side network element and the local gateway.
  • Step 905 The target mobility management entity may initiate a session establishment process of the local IP connection to the serving gateway.
  • Step 906 The target mobility management entity sends a handover request message to the target radio side network element to request the target radio side network element to perform handover.
  • the handover request message of step 906 carries the tunnel information of the local gateway.
  • the handover request message of step 906 carries the tunnel information of the serving gateway.
  • Step 907 The target radio side network element responds to the target mobility management entity with a handover request acknowledgement message.
  • Step 908 The target mobility management entity sends a relocation forward response message to the original mobility management entity.
  • Step 910 The original mobility management entity sends a handover command to the original radio side network element.
  • Step 912 The original radio side network element sends a handover command to the terminal.
  • Step 913 The terminal initiates a handover confirmation message to the target radio side network element.
  • Step 914 The target radio side network element notifies the target mobility management entity to perform the handover.
  • Step 915 The target radio side network element sends a relocation forward completion notification message to the original mobility management entity.
  • Step 916 The original radio side network element returns a relocation forward completion confirmation message to the target mobility management entity.
  • the target mobility management entity determines that there is a connection between the target wireless side network element and the local gateway, perform the following steps 917 to 922:
  • Step 917 The target mobility management entity sends a modify bearer request message to the serving gateway.
  • the target mobility management entity sends the indication information to the serving gateway according to the determination result, where the indication information may be expressed in the following manner: Modifying the bearer request message
  • the device carries an explicit tunnel establishment indication between the target wireless side network element and the local gateway, or carries information or an indication that the target wireless side network element and the local gateway are connected.
  • Step 918 The serving gateway sends a modify bearer request message to the local gateway.
  • the indication information sent by the serving gateway to the local gateway is expressed in the following manner: the indication that the bearer request message carries the target radio side network element tunnel information or sends the downlink data to the radio side network element; the local gateway receives the indication After the information is indicated and the handover is completed, the downlink data is forwarded to the target radio side network element.
  • Step 919 The local gateway responds to the service gateway to modify the load response.
  • Step 920 The serving gateway sends a modify bearer response message to the target mobility management entity.
  • Step 922 The target mobility management entity initiates a terminal context release process to the original radio side network element.
  • the target mobility management entity determines that there is no connection between the target wireless side network element and the local gateway, perform the following steps 917a through 922a:
  • Step 917a The target mobility management entity sends a modify bearer request to the serving gateway.
  • the target mobility management entity sends the indication information to the serving gateway according to the judgment result, and the indication information may be expressed in the following manner: carrying the explicit wireless target without establishing the target An indication of a tunnel between the network element and the local gateway, or an indication of establishing a tunnel between the serving gateway and the local gateway, or carrying information or an indication that the target wireless side network element and the local gateway are not connected, or not carrying the target wireless side An indication of the tunnel between the network element and the local gateway.
  • Step 918a The serving gateway sends a modify bearer request to the local gateway.
  • the indication information sent by the serving gateway to the local gateway is expressed in the following manner: the message does not carry the target radio side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway.
  • the local gateway After receiving the indication information and completing the handover, the local gateway forwards the downlink data to the serving gateway. Sending downstream data (for example, the service gateway saves the information), you may not need to perform steps 918a and 919a.
  • step 919a the local gateway responds to the service gateway to modify the bearer response.
  • Step 920a The serving gateway responds to the target mobility management entity with a modify bearer response message.
  • Step 922a The target mobility management entity initiates a terminal context release process to the original radio side network element.
  • the foregoing embodiment 3 only uses the mobility management entity to determine whether the current wireless side network element is connected to the local gateway as an example to describe the management mode of the local IP data during the handover process. It can be changed.
  • the method similar to FIG. 8 can be adopted, that is, the service gateway determines whether there is a connection between the target wireless side network element and the local gateway. In this case, the service gateway determines whether there is a connection between the target wireless side network element and the local gateway. The service gateway saves the local gateway and the initial wireless side network element information. Before step 918, the service gateway determines the target wireless side network element. Whether it is the same as the initial wireless side network element or whether there is an interface or whether it is set up between the target wireless side network element and the local gateway.
  • the target wireless side network element is considered to be connected to the local gateway. If the service gateway determines that there is a connection between the target radio side network element and the local gateway, the message in step 918 carries the target radio side network element tunnel information or an indication that the downlink data is sent to the radio side network element.
  • the rest of the processing is very similar to the above-described embodiment, and does not affect the description of the present invention, so the description will not be repeated here.
  • FIG. 10a is a flow chart showing the process of performing location update of a terminal provided by the present invention based on the system architecture of FIG. 1.
  • the location update process needs to establish a radio bearer. The specific steps are described as follows: Step 1 OaO 1 , the terminal sends a tracking area update request message to the mobility management entity via the target radio side network element, and may carry the activation identifier;
  • Step 10a02 The target mobility management entity sends a context request message to the original mobility management entity.
  • Step 10a03 The original mobility management entity sends a context response message to the target mobility management entity, which may carry local gateway information.
  • Step 10a04 optionally, the terminal, the mobility management entity, and the authentication authorization server perform an authentication process
  • Step 10a05 The target mobility management entity determines whether there is a connection between the target wireless side network element and the local gateway.
  • the target mobility management entity may determine whether there is a connection between the target wireless side network element and the local gateway by using the following method: After the step 10a03, the target mobility management entity determines whether there is an interface or a connection between the target wireless side network element and the local gateway.
  • the original mobility management entity determines whether there is an interface or a connection between the target wireless side network element and the local gateway before step 10a03, and informs the target mobility management entity in step 10a03; or, the original mobility management The entity saves the initial radio side network element information, and determines whether the initial radio side network element and the target radio side network element are the same before step 10a03, and informs the target mobility management entity in step 10a03; or, the target radio side network element determines the Whether there is an interface between the local gateways or whether it is set up or whether it is the initial wireless side network element, and the information is notified to the target mobility management entity in step 10a01 or step 10al5 (if notified in step 10al5, step 10al3 needs Carry the local gateway information of the terminal or The wireless side network element information is determined by the target wireless side network element to determine whether there is a connection between the target wireless side network element and the local gateway; at this time, if there is a connection, the target wireless side network element uses the local gateway tunnel information to transmit the up
  • the target radio side network element uses the serving gateway tunnel information to transmit the uplink data to the serving gateway). If there is an interface or a connection between the target wireless side network element and the local gateway, or the initial wireless side network element is the same as the target wireless side network element, the target wireless side network element is considered to be connected to the local gateway.
  • Step 10a06 the target mobility management entity sends a context confirmation message to the original mobility management entity.
  • Step 10a07 The target mobility management entity requests a bearer modification operation from the serving gateway.
  • Step 10a08 the serving gateway may send a modify bearer request to the local gateway.
  • Step 10a09 The local gateway can modify the bearer response in response to the serving gateway.
  • Step 10al0 the serving gateway responds to the target mobility management entity to modify the bearer response;
  • Step lOal l performs a location update process between the target mobility management entity and the authentication authorization server;
  • Step 10al2 performing a location cancellation process between the authentication authorization server and the original mobility management entity
  • Step 10al3 The target mobility management entity sends an initial context establishment request message to the target radio side network element.
  • the initial context establishment request message of the step 10al3 carries the tunnel information of the local gateway.
  • the initial context establishment request message of the step 10al3 carries the tunnel information of the serving gateway.
  • Step 10al4 the target radio side network element performs a radio 7
  • Step 10al5 the target radio side network element responds to the mobility management entity initial context establishment completion/wireless setup completion message
  • the mobility management entity determines that there is a connection between the current wireless side network element and the local gateway, perform the following steps 10al6 to 10l9:
  • Step 10al6 The target mobility management entity sends a modify bearer request message to the serving gateway to request the serving gateway to perform bearer modification.
  • the target mobility management entity sends the indication information to the serving gateway according to the determination result, and the indication information may be expressed in the following manner:
  • the modification bearer request message carries an explicit tunnel establishment indication between the target radio side network element and the local gateway. Or carrying information or instructions that are connected between the target wireless side network element and the local gateway.
  • Step 1 Oal 7 The serving gateway sends a modify bearer request message to the local gateway.
  • the serving gateway sends the indication information to the local gateway, and the indication information is expressed in the following manner:
  • the modification bearer request message in step 10al7 carries the target radio side network element tunnel information or sends the downlink data to the target radio side network element.
  • the local gateway forwards the downlink data to the target radio side network element.
  • Step 10al8 the local gateway responds to the service gateway to modify the bearer response.
  • Step 1 Oal 9 the serving gateway sends a bearer modification response message to the target mobility management entity. If the mobility management entity determines that there is no connection between the current radio side network element and the local gateway, perform the following steps 10al6a to 10al9a:
  • Step 10al6a the target mobility management entity sends a modify bearer request message to the serving gateway to request the serving gateway to perform bearer modification;
  • the target mobility management entity sends the indication information to the serving gateway according to the judgment result, and the indication information may be expressed in the following manner:
  • the modification of the bearer request message carries an explicit relationship between the target wireless side network element and the local gateway.
  • the indication of the tunnel, or the indication of establishing a tunnel between the serving gateway and the local gateway, or the information or indication that the target wireless side network element and the local gateway are not connected, or not between the establishing target wireless side network element and the local gateway The indication of the tunnel.
  • Step 1 Oal 7a the serving gateway sends a modify bearer request message to the local gateway.
  • the serving gateway sends the indication information to the local gateway.
  • the indication information is expressed in the following manner:
  • the modification bearer request message does not carry the target radio side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway, and the local gateway receives the indication.
  • the downlink data is forwarded to the serving gateway. Sending downstream data (for example, the service gateway saves the information), you may not need to perform steps 10al7a and 10al8a.
  • Step 10al8a the local gateway responds to the service gateway - change the bearer response
  • the serving gateway sends a bearer modification response message to the target mobility management entity.
  • the above embodiment only determines the current wireless side network element with the mobility management entity.
  • the case of whether there is a connection between local gateways is an example to illustrate how local IP data is managed. It is also possible to adopt a method similar to that of FIG. 8, that is, the serving gateway determines whether there is a connection between the target wireless side network element and the local gateway. In this case, the service gateway determines whether there is a connection between the target radio side network element and the local gateway.
  • the method may be: before the step 10al6, the serving gateway saves the local gateway and the initial radio side network element information, and after the step 10al6, the serving gateway determines the target wireless.
  • the side network element and the initial wireless side network element are the same or whether there is an interface or whether the interface exists between the target wireless side network element and the local gateway. If there is an interface or a connection between the target wireless side network element and the local gateway, or the initial wireless side network element is the same as the current wireless side network element, the target wireless side network element is considered to be connected to the local gateway. If the service gateway determines that there is a connection between the target radio side network element and the local gateway, the message in step 10al7 carries the target radio side network element tunnel information or sends the downlink data to the target radio side network element. The rest of the processing 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.
  • FIG 10b is a flow chart showing the process of location update of the terminal provided by the present invention based on the system architecture of Figure 1.
  • the location update process requires the establishment of a radio bearer.
  • the specific steps are as follows: Step 1 ObO 1 , the terminal sends a tracking area update request message to the mobility management entity via the target radio side network element, and may carry the activation identifier;
  • Step 10b02 The target mobility management entity sends a context request message to the original mobility management entity.
  • Step 10b03 The original mobility management entity sends a context response message to the target mobility management entity, which may carry local gateway information.
  • Step 10b04 optionally, the terminal, the mobility management entity, and the authentication authorization server perform an authentication process
  • Step 10b05 the target mobility management entity determines whether there is a connection between the target wireless side network element and the local gateway;
  • the target mobility management entity may determine whether there is a connection between the target wireless side network element and the local gateway by using the following method: After the step 10b03, the target mobility management entity determines whether there is an interface or a connection between the target wireless side network element and the local gateway.
  • the original mobility management entity Before step 10b03, it is determined whether there is an interface or a connection between the target wireless side network element and the local gateway, and the target mobility management entity is notified in step 10b03; or, the original mobility management entity saves the initial wireless side network element information, Before step 10b03, it is determined whether the initial wireless side network element and the target wireless side network element are the same, and the target mobility management entity is notified in step 10b03; or the target wireless side network element determines whether there is an interface between the local wireless gateway and the local gateway, or whether Whether it is the initial wireless side network element, and the information is notified to the mobility management entity in step 10b01 or step 10bl5 (if notified in step 10bl5, step 10bl3 needs to carry the local gateway information of the terminal or the initial wireless side.
  • the network element information determines whether there is a connection between the target wireless side network element and the local gateway by the target wireless side network element. At this time, if there is a connection, the target wireless side network element uses the local gateway tunnel information to transmit the uplink data to the local gateway. If there is no connection, the target wireless side network element uses the service gateway tunnel Information, the uplink data to the serving gateway). If there is an interface or a connection between the target wireless side network element and the local gateway, or the initial wireless side network element is the same as the target wireless side network element, it is considered that there is a connection between the target wireless side network element and the local gateway.
  • Step 10b06 the target mobility management entity sends a context confirmation message to the original mobility management entity.
  • the target mobility management entity determines that there is a connection between the target wireless side network element and the local gateway, perform the following steps 10b07 to 10b08:
  • step 10b07 the target mobility management entity requests a bearer modification operation from the serving gateway.
  • the target mobility management entity sends the indication information to the serving gateway according to the determination result, and the indication information may be expressed in the following manner: carrying an explicit tunnel establishment indication between the target wireless side network element and the local gateway, or carrying the target wireless side There is a connection information or indication between the NE and the local gateway.
  • Step 10b08 The serving gateway sends a modify bearer request message to the local gateway.
  • the serving gateway sends the indication information to the local gateway, where the indication information is expressed in the following manner: the indication that the bearer request message carries the target radio side network element tunnel information or sends the downlink data to the target radio side network element, local After receiving the indication information and completing the location update, the gateway forwards the downlink data to the target radio side network element.
  • the target mobility management entity determines that there is no connection between the target wireless side network element and the local gateway. Then perform the following steps 10b07a to 10b08a:
  • step 10b07a the target mobility management entity requests a bearer modification operation from the serving gateway.
  • the target mobility management entity sends the indication information to the serving gateway according to the determination result.
  • the indication information may be expressed in the following manner: carrying an explicit indication that the tunnel between the target wireless side network element and the local gateway is not required to be established, Or the indication of establishing a tunnel between the serving gateway and the local gateway, or carrying the information or indication that the target wireless side network element and the local gateway are not connected, or the indication of establishing a tunnel between the target wireless side network element and the local gateway.
  • Step 10b08a the serving gateway sends a modify bearer request to the local gateway.
  • the serving gateway sends the indication information to the local gateway, where the indication information is expressed in the following manner: the modification bearer request message does not carry the target radio side network element tunnel information or carries the indication that the downlink data is sent to the serving gateway, and the local gateway receives After the indication information and the location update is completed, the downlink data is forwarded to the serving gateway.
  • steps 10b08a and 10b09 may not be required.
  • Step 10b09 the local gateway may respond to the service gateway to tamper with the bearer response;
  • Step 10bl0 the serving gateway responds to the target mobility management entity to modify the bearer response;
  • Step 10b1 the target mobility management entity and the authentication authorization server perform a location update process.
  • Step 10bl2 performing a location cancellation process between the authentication authorization server and the original mobility management entity
  • Step 10bl3 the target mobility management entity sends an initial context establishment request message to the target radio side network element
  • the initial context setup request message of the step 10b3 carries the tunnel information of the local gateway.
  • the initial context setup request message of step 10bl3 carries the tunnel information of the serving gateway.
  • Step 10bl4 the target radio side network element performs a radio bearer establishment process
  • Step 10bl5 the target radio side network element responds to the mobility management entity initial context establishment completion/radio bearer setup completion message
  • Step 10bl6 the mobility management entity requests the service gateway to perform bearer modification
  • the serving gateway sends a bearer modification response message to the target mobility management entity.
  • the above embodiment only illustrates how the local IP data is managed by taking the mobility management entity to determine whether there is a connection between the target radio side network element and the local gateway. It is also possible to adopt a method similar to that of FIG. 8, that is, the serving gateway determines whether there is a connection between the target wireless side network element and the local gateway. In this case, the service gateway determines whether there is a connection between the target wireless side network element and the local gateway. The method may be: before the step 10b07, the serving gateway saves the local gateway and the initial wireless side network element information, and after 10b07, the monthly service gateway determines.
  • the target wireless side network element and the initial wireless side network element are the same or whether an interface exists between the target wireless side network element and the local gateway or whether the interface is set. If there is an interface or a connection between the target wireless side network element and the local gateway, or the initial wireless side network element is the same as the current wireless side network element, it is considered that there is a connection between the target wireless side network element and the local gateway. If the serving gateway determines that there is a connection between the target wireless side network element and the local gateway, the message in step 10b08 carries the target wireless side network element tunnel information or sends the downlink data to the target wireless side network element. The rest of the processing is very similar to the above-described embodiment, and does not affect the description of the present invention, so the description will not be repeated here.
  • Figure 11a shows a flow chart of the present invention providing a terminal into an idle state based on the system architecture of Figure 1. The specific steps are described as follows:
  • Step 11 a01 the terminal has a local IP connection after accessing the wireless communication system
  • Step l la02 the wireless side network element sends a terminal context release request to the mobility management entity;
  • Step l la03 the mobility management entity determines whether there is a connection between the current wireless side network element and the local gateway;
  • the mobility management entity may determine the current wireless side network element and the local gateway by using the following method: Whether there is a connection between: The mobility management entity determines whether there is an interface or a connection between the current wireless side network element and the local gateway before step l la03; or, the mobility management entity saves the initial wireless side network element information, in step l Before la03, it is determined whether the initial wireless side network element and the current wireless side network element are the same; or, the wireless side network element determines whether there is an interface or whether it is set up with the local gateway or whether it is the initial wireless side network element, and the The information is communicated to the mobility management entity in step l la02. If there is an interface between the current wireless network element and the local gateway, or the initial wireless side network element is the same as the current wireless side network element, it is considered that there is a connection between the current wireless side network element and the local gateway.
  • Step l la04 the mobility management entity sends a dry bearer request message to the serving gateway to request the service gateway to release the radio bearer, and carries the indication information;
  • the indication information may be expressed in the following manner: The information or the indication that the explicit wireless side network element and the local gateway are connected, or the wireless side network element and the local An indication of the inter-gateway tunnel, or an indication of establishing a tunnel between the serving gateway and the local gateway, or an indication that the terminal enters an idle state, or an indication of data caching.
  • Step l la05 the serving gateway sends a bearer modification request or a bearer release request message to the local gateway, and carries the indication information;
  • the step l la05 message carries an indication of releasing the tunnel between the wireless side network element and the local gateway, or establishing an indication of the tunnel between the serving gateway and the local gateway, or the terminal enters An indication of an idle state, or an indication of data buffering, which may be used to distinguish between a terminal entering an idle state process and a service arrow/location update process/handover process.
  • the local gateway translates the tunneling information between the wireless side network element and the local gateway, establishes a tunnel between the serving gateway and the local gateway, or performs data caching.
  • the indication information of the steps l la04 and l la05 is expressed in the following manner: the bearer modification request or the bearer release request message carries the indication that the terminal enters the idle state, or An indication of data caching is performed, and the indication may be used to distinguish the terminal from entering the idle state process and the service request/location update process/handover process.
  • the local gateway After the local gateway receives the indication information, it performs data caching.
  • Step l la06 the local gateway responds to the serving gateway with a bearer modification response or a bearer release response.
  • the serving gateway sends a release radio bearer response to the mobility management entity.
  • Figure l ib shows a flow chart of the terminal provided in the idle state of the present invention based on the system architecture of Figure 1. The specific steps are described as follows:
  • Step 1 lbO 1 the terminal has a local IP connection after accessing the wireless communication system
  • Step l lb02 the wireless side network element initiates a terminal context release request to the mobility management entity;
  • Step l lb03 the mobility management entity requests the service gateway to release the radio bearer;
  • Step l lb04 the service gateway determines whether there is a connection between the current wireless side network element and the local gateway; wherein the service gateway determines whether there is a connection between the current wireless side network element and the local gateway: The service gateway saves the local gateway before step llb03 And the initial wireless side network element information, after the step 1 lb03, the serving gateway determines whether the current wireless side network element and the initial wireless side network element are the same or whether there is an interface or whether the current wireless side network element and the local gateway have an interface. If there is an interface between the current wireless network element and the local gateway, or the initial wireless side network element is the same as the current wireless side network element, the current wireless side network element is connected to the local gateway.
  • Step l lb05 the serving gateway sends a bearer modification request or a bearer release request to the local gateway, and carries the indication information;
  • the indication information in step l lb05 is expressed as follows:
  • the bearer modification request or the bearer release request message carries the explicit wireless side network element and the local gateway.
  • There is a connection information or indication an indication of releasing the tunnel between the wireless side network element and the local gateway, or an indication of establishing a tunnel between the serving gateway and the local gateway, or an indication that the terminal enters an idle state, or an indication of data caching.
  • the indication can be used to distinguish the terminal from entering the idle state process and the service request/location update process/handover process.
  • the local gateway releases the tunnel information between the radio side network element and the local gateway, establishes a tunnel between the serving gateway and the local gateway, or performs data caching.
  • the indication information of step l lb05 is expressed in the following manner: the bearer modification request or the bearer release request message carries an indication that the terminal enters an idle state, or performs data caching. Indication, the indication can be used in the zone The sub-terminal enters the idle state process and the service request/location update process/handover process. After receiving the indication information, the local gateway performs data caching.
  • Step l lb06 the local gateway responds to the serving gateway with a bearer modification response or a bearer release response; Step l lb07, the serving gateway sends a release radio bearer response to the mobility management entity.
  • the present invention further provides a mobile communication system, including a wireless side network element, a local gateway, a mobility management entity, and a service gateway, where:
  • the wireless side network element, the mobility management entity or the service gateway includes:
  • the connection judging module is configured to: determine whether there is a connection between the current radio side network element and the local gateway in the process of the service request or the terminal entering the idle state, and determine the target radio side network element and the local gateway during the handover or location update process. Whether there is a connection between, and the result is notified to the information delivery module;
  • the information sending module is configured to: deliver the indication information to the local gateway according to the determination result; the local gateway is configured to: process the local IP data according to the indication information.
  • connection determining module determines that there is a connection between the current wireless side network element or the target wireless side network element and the local gateway:
  • An interface exists between the current or target wireless side network element and the local gateway, or the current or target wireless side network element is combined with the local gateway, or
  • the current or target radio side network element is an initial radio side network element.
  • the connection judging module and the information sending module are in the radio side network element, and the mobility management entity and the service gateway comprise an information delivery module.
  • the radio side network element The information sending module sequentially uses the existing or new message to pass the mobility tube
  • the information delivery module of the physical entity and the service gateway sends the indication information to the local gateway; or, in the location update and handover process, the information sending module of the original wireless side network element sequentially uses existing or new information
  • the information transfer module of the original mobility management entity, the target mobility management entity, and the serving gateway sends the indication information to the local gateway, or the target side network element sequentially passes the target mobility management entity by using an existing or newly added message.
  • the information delivery module of the service gateway sends the indication information to the local gateway; or
  • the connection judging module and the information sending module are in the mobility management entity, and the service gateway includes an information delivery module.
  • the information sending module of the mobility management entity utilizes the current
  • the information transmission module of the service gateway sends the indication information to the local gateway through the information delivery module of the service gateway; or, in the location update and handover process, the information transmission module of the original mobility management entity utilizes the existing or new message.
  • connection judging module and the information delivery module are in the serving gateway, and the information delivery module directly sends the indication information to the local gateway by using an existing or newly added message.
  • the indication information sent by the information sending module of the wireless side network element to the information delivery module of the mobility management entity is information indicating whether there is a connection between the network gateway and the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the mobility management entity to the information delivery module of the service gateway is expressed in the following manner:
  • the message carries an explicit tunnel establishment indication between the wireless side network element and the local gateway, or Information or indication of connection between the wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is represented by the following manner: the message carrying the tunnel information of the radio side network element or the indication of sending the downlink data to the radio side network element;
  • the local gateway forwards downlink data to the radio side network element according to the indication information; When there is no connection between the wireless side network element and the local gateway:
  • the information sent by the information sending module or the information transmitting module of the mobility management entity to the information delivery module of the service gateway is represented by the following manner:
  • the message carries an explicit tunnel that does not need to establish a tunnel between the wireless side network element and the local gateway. Instructing, or establishing an indication of a tunnel between the serving gateway and the local gateway, or a message or indication that the wireless side network element is not connected to the local gateway, or the message does not carry an indication of establishing a tunnel between the wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the serving gateway to the local gateway is expressed in the following manner: the message does not carry the wireless side network element tunnel information or carries an indication that the downlink data is sent to the serving gateway;
  • the local gateway forwards downlink data to the serving gateway according to the indication information.
  • the information sent by the information sending module of the wireless side network element to the information delivery module of the mobility management entity is used to indicate Whether there is a connection information with the local gateway;
  • the indication information sent by the information sending module or the information delivery module of the mobility management entity to the information delivery module of the service gateway is expressed in the following manner:
  • the message carries an explicit connection between the wireless side network element and the local gateway. Or indicating, or releasing an indication of a tunnel between the wireless side network element and the local gateway, or establishing an indication of a tunnel between the serving gateway and the local gateway, or an indication that the terminal enters an idle state, or an indication of performing data caching;
  • the indication information sent by the information sending module or the information delivery module of the serving gateway to the local gateway is represented by the following manner: the message carries an indication of releasing the tunnel between the wireless side network element and the local gateway, or establishing a tunnel between the serving gateway and the local gateway. Instructing, or an indication that the terminal enters an idle state, or an indication of data caching;
  • the local gateway performs the tunnel information between the wireless side network element and the local gateway according to the indication information, establishes a tunnel between the serving gateway and the local gateway, or performs data caching;
  • the indication information sent by the delivery module and the indication information sent by the information sending module or the information delivery module of the service gateway to the local gateway are represented in the following manner:
  • the message carries an indication that the terminal enters an idle state or an indication of performing data buffering;
  • the local gateway performs data caching according to the indication information.
  • the wireless side network element is combined with a local gateway, and the local gateway caches downlink data when the terminal is idle;
  • the information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is information for notifying the local gateway to send the data;
  • the local gateway sends the cached data to the terminal according to the indication information.
  • the connection judgment network element determines that there is no connection between the wireless side network element and the local gateway, and the local gateway only maintains the service gateway tunnel information and does not save the wireless side network element tunnel information, the information of the service gateway is sent.
  • the indication information sent by the module or the information delivery module to the local gateway is information for notifying the local gateway for data transmission; the local gateway forwards the cached data to the service gateway according to the indication information.
  • the information sending module sent by the information sending module of the original wireless side network element to the information transmitting module of the original mobility management entity, and the information transmitting module of the target wireless side network element to the target mobility management entity The indication information sent by the module, the information sent by the information sending module of the original mobility management entity to the information delivery module of the target mobility management entity is used to indicate whether there is a connection between the target wireless side network element and the local gateway.
  • the indication information sent by the information sending module or the information delivery module of the target mobility management entity to the information delivery module of the serving gateway is expressed in the following manner:
  • the message carries an explicit tunnel establishment indication between the target wireless side network element and the local gateway. Or the information or indication of the connection between the target wireless side network element and the local gateway;
  • the indication information sent by the information sending module or the information transmitting module of the serving gateway to the local gateway is represented by: the message carrying the tunnel information of the target radio side network element or the indication of sending the downlink data to the target radio side network element;
  • the local gateway # ⁇ forwards the downlink data to the target wireless side network element according to the indication information
  • the indication information sent by the information sending module or the information delivery module of the target mobility management entity to the information delivery module of the service gateway is expressed in the following manner:
  • the message carries an explicit need to establish a relationship between the target wireless side network element and the local gateway.
  • the indication of the tunnel is sent by the information sending module or the information transmitting module of the serving gateway to the local gateway in the following manner:
  • the message does not carry the target radio side network element tunnel information or carries the indication that the downlink data is sent to the serving gateway. ;
  • the local gateway forwards downlink data to the serving gateway according to the handover indication.
  • the initial wireless side network element referred to in the present invention refers to a wireless side network element that the terminal initially accesses when the local IP connection is established;
  • the tunnel information may be one or more of the following combinations: ID, identifier, address, and tunnel endpoint identifier ( Tunnel Endpoint Identifier, TEID);
  • Local gateway information, wireless side network element information, and monthly gateway information may be one or more of the following combinations: ID, identifier, and address.
  • the above embodiment only illustrates the management manner of the local IP connection by taking the case of FIG. 1 as an example.
  • the method of managing the local IP data is very similar to the above embodiment, and does not affect the description of the present invention, so the description will not be repeated here.
  • the indication information received by the local gateway is only used to notify related information that the local gateway and the wireless side network element have a connection, and after receiving the indication information, the local gateway The indication information is used as a trigger condition, and the local IP data is processed according to the indication information, and the processing manner of the local IP data is determined, including forwarding, buffering data, and establishing or releasing a local IP data tunnel.
  • the wireless side network element (mainly responsible for receiving and receiving wireless signals, contacting the terminal through the air interface, managing the wireless resources of the air interface, resource scheduling, access control, NAT, local IP access policy routing and execution, data offloading, etc.) may be A base station, a home base station, a radio network controller (Radio Network Controller, called a RNC), a home base station gateway, and a data offloading functional entity.
  • a radio network controller Radio Network Controller, called a RNC
  • RNC Radio Network Controller
  • the mobility management entity (the terminal-to-network non-access stratum signaling management, the terminal's security verification function, the terminal mobility management, the user idle mode tracking and paging management function, and the bearer management) may be the mobility management unit.
  • Mobility Management Entity
  • MSC Mobile Switching Centre
  • SGSN Serving GPRS Support Node
  • Local gateway (as a gateway to the external network such as the Internet, the local gateway provides address allocation, billing, packet filtering, policy control, data offloading, NAS/S1-AP/RANAP/GTP/PMIP/MIP messages)
  • the functions of parsing, NAT, local IP access policy routing and execution, and data offloading may be L-SGW and L-PGW, may be separate L-PGW, may be L-GGSN and L-SGSN, and may be separate L-GGSN, which can be a data offload function entity.
  • the service gateway (the service gateway is the gateway of the core network to the wireless system, and is responsible for the user plane bearer of the terminal to the core network, the data buffer in the terminal idle mode, the function of initiating the service request by the network side, the lawful interception and the packet data routing and forwarding function;
  • the service gateway is responsible for counting the situation in which the user terminal uses the wireless network, and generates the CDR of the terminal using the wireless network, and transmits the CDR to the charging gateway, which may be the SGW or the SGSN.
  • the access gateway (the access gateway is the gateway of the evolved system and the external packet data network of the system, which is connected to the Internet and the packet data network, and is responsible for the Internet Protocol (Internet Protocol) address allocation and charging function of the terminal. , packet packet filtering, policy control and other functions) can be PGW, or GGSN.
  • the wireless side network element of the local IP connection can be the same as the local gateway address.
  • the local gateway information may be one or more of a local gateway address, or a local gateway identifier, and a local gateway name.
  • the local IP connection can be a local IP access user local network, a local IP access company local network, a local IP access Internet, a diversion operation of the Internet service, or a specific IP data offload.
  • the location update can be a tracking area update, or a routing area update.
  • modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any particular combination of hardware and software.
  • the present invention determines whether there is a connection between a current or target wireless side network element and a local gateway in a service request, a terminal entering an idle state, a location update, or a handover process, so as to notify the local gateway to effectively process local IP data, that is, The correct transmission or data caching scenarios are effectively distinguished, thereby ensuring the correct logical processing flow of the wireless communication system.

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Abstract

本发明公开了对本地IP数据进行管理的方法,其中一种方法中,在本地IP连接的情况下,该方法包括:在服务请求或终端进入空闲态的过程中,连接判断网元判断当前无线侧网元与本地网关间是否存在连接,并根据判断结果向所述本地网关传递指示信息;或在位置更新或切换过程中,连接判断网元判断目标无线侧网元与本地网关间是否存在连接,并根据判断结果向所述本地网关传递指示信息;以及所述本地网关根据所述指示信息对本地IP数据进行处理。本发明还公开了一种移动通信系统。本发明能够保障无线通信系统正确的逻辑处理流程。

Description

对本地 IP数据进行管理的方法及移动通信系统
技术领域
本发明涉及移动通信领域,具体涉及一种对本地 IP数据进行管理的方法 及移动通信系统。 背景技术
第三代合作伙伴计划 ( 3rd Generation Partnership Project, 简称为 3GPP ) 演进的分组系统(Evolved Packet System, 简称为 EPS )由演进的通用移动通 it系统陆地无线接入网 ( Evolved Universal Terrestrial Radio Access Network , 简称为 E-UTRAN ) 、 移动管理单元(Mobility Management Entity, 简称为 MME ) 、 服务网关 ( Serving Gateway, 简称为 S-GW ) 、 分組数据网络网关 ( Packet Data Network Gateway , 简称为 P-GW或者 PDN GW)、 归属用户服 务器 (Home Subscriber Server , 简称为 HSS ) 、 3 GPP 的认证授权计费 ( Authentication, Authorization and Accounting, 筒称为 AAA )服务器, 策 略和计费规则功能( Policy and Charging Rules Function, 简称为 PCRF ) 实体 及其他支撑节点组成。 图 1是根据相关技术的 EPS系统架构的示意图, 移动 性管理实体负责移动性管理、 非接入层信令的处理和用户移动管理上下文的 管理等控制面的相关工作; S-GW是与 E-UTRAN相连的接入网关设备, 在 E-UTRA 和 P-GW之间转发数据,并且负责对寻呼等待数据进行緩存; P-GW 则是 EPS与分组数据网络( Packet Data Network, 简称为 PDN ) 网络的边界 网关,负责 PDN的接入及在 EPS与 PDN间转发数据等功能; S-GW和 P-GW 都属于核心网网关。
家用基站是一种小型、低功率的基站,部署在家庭及办公室等室内场所, 主要作用是为了给用户提供更高的业务速率并降低使用高速率服务所需要的 费用, 同时弥补已有分布式蜂窝无线通信系统覆盖的不足。 家用基站的优点 是实惠、 便捷、 低功率输出、 以及即插即用等。 在家用基站系统中, 家用基 站为无线侧网元。 家用基站可以直接连接到核心网络, 如图 1所示, 也可以 通过家用基站网关这个逻辑网元接入到核心网络, 如图 2所示, 其中, 家用 基站网关主要功能为: 验证家用基站的安全性, 处理家用基站的注册, 对家 用基站进行运行维护管理, 根据运营商要求配置和控制家用基站, 负责交换 核心网和家用基站的数据。
在家用基站系统中存在闭合用户组( Closed Subscriber Group , 简称为
CSG ) 的概念, 允许用户接入一个或多个访问受限的 CSG celL 家用基站的 使用模式可分为闭合模式、 混合模式和开放模式。 当家用基站是闭合模式的 时候, 只有该家用基站所属 CSG 用户可以接入该基站并享受基站提供的业 务。 当家用基站是开放模式的时候, 任何用户都可以接入该基站, 此时的家 用基站等同于宏基站使用。 当家用基站是混合模式的时候,既允许 CSG用户 接入, 同时也允许其他用户接入使用, 不过会根据用户是否属于 CSG列表来 区分不同用户类型、并实现差异化的服务质量处理,也就是说 CSG的用户在 使用混合型家用基站的时候具有更高的业务优先级, 拥有更好的服务质量和 业务类别。
除了支持移动核心网络的接入以外,移动通信系统(包括家用基站系统) 还可支持本地 IP访问功能, 在无线侧网元具备本地 IP访问能力以及用户签 约允许本地 IP访问的条件下, 可实现终端对家用网络其他 IP设备或者互联 网络的本地接入。
本地 IP访问的实现可以采用多种连接建立方式:可通过建立一个连接来 同时实现核心网访问以及本地 IP的访问功能,此时无需在无线侧网元或家用 基站网关上增设本地网关的功能;也可通过增设本地网关来提供对本地 IP访 问技术的有力支持,本地网关可与无线侧网元进行合设 /分设(如图 1所示)。 本地网关作为本地接入到外部网络 (例如 Internet ) 的网关, 提供地址分配、 计费、分组包过滤、策略控制、数据分流功能、非接入层(Non Access Stratum, NAS )/Sl应用部分( SI Application Part, Sl-AP )/无线接入网应用部分( Radios Access Network Application Part, RANAP ) /通用暖道协议 ( General Tunneling Protocol, 简称为 GTP ) /代理移动 IP协议( Proxy Mobile IP, 简称为 PMIP ) /移动 IP协议(Mobile IP, 简称为 MIP )消息解析、 网络地址转换(Network Address Translation , 简称为 NAT ) > 以及本地 IP访问策略路由和执行等功 能。 如图 2所示, 本地网关可与无线侧网元进行合设。 当存在家用基站网关 的情况下, 本地网关不仅可与家用基站进行合设 /分设, 也可与家用基站网关 进行合设 /分设(如图 3所示)。 本地网关可以由本地 SGW ( Local SGW, 简 称为 L-SGW )和本地 PGW ( Local PGW, 筒称为 L-PGW )共同实现, 也可 以由 L-PGW单独实现。 此外, 家用基站网关可以与家用基站进行合设。 对 于通用陆地无线接入网络 ( Universal Terrestrial Radio Access Network, 简称 为 UTRAN ) 系统, 核心网网关可以是服务 GPRS支持节点 (Serving GPRS Support Node,简称为 SGSN )和网关 GPRS支持节点( Gateway GPRS Support Node, 简称为 GGSN )。 本地网关可以由本地 GGSN ( Local GGSN, 简称为 L-GGS )和本地 SGSN ( Local SGSN, 简称为 L-SGSN )共同实现, 也可以 由 L-GGSN单独实现。
以长期演进(Long Term Evolution, 筒称为 LTE )移动通信网络架构为 例, 图 4和图 5显示了在图 1的无线通信系统中本地 IP连接的示意数据流。
图 6显示了现有技术中终端由空闲态转为连接态时进行服务请求过程的 流程图。 具体步骤描述如下:
步骤 601 , 终端接入无线通信系统后具有本地 IP连接, 此后终端进入空 闲态;
步骤 602, 终端经无线侧网元向移动性管理实体发送服务请求消息; 步骤 603, 执行 NAS认证过程, 该步骤可选;
步骤 604,移动性管理实体向无线侧网元发送初始上下文建立请求消息; 步骤 605, 无线侧网元执行无线承载建立过程;
步骤 606, 无线侧网元回应移动性管理实体初始上下文建立完成消息; 步骤 607, 移动性管理实体向服务网关发送修改承载请求消息; 步骤 608 , 服务网关向本地网关发送修改承载请求消息以请求进行承载 修改, 该步骤可选;
步骤 609, 本地网关回应服务网关修改承载响应消息, 该步骤可选; 步骤 610, 服务网关向移动性管理实体回应修改承载响应消息。
由上述流程可见, 在步骤 608为可选并且该步骤中的修改承载请求消息 目前未告知本地网关本地 IP数据流经途径,此时, 无线侧网元或本地网关均 无法区分采用图 4和图 5传送本地 IP数据, 从而导致本地 IP访问数据处理 异常。 发明内容
本发明要解决的技术问题是提供一种对本地 IP数据进行管理的方法及 移动通信系统, 以在本地 IP连接的情况下, 实现对本地 IP数据的有效管理。
为解决以上技术问题, 本发明提供一种对本地 IP数据进行管理的方法, 在本地 IP连接的情况下, 该方法包括:
在服务请求或终端进入空闲态的过程中, 连接判断网元判断当前无线侧 网元与本地网关间是否存在连接, 并根据判断结果向所述本地网关传递指示 信息, 所述连接判断网元指当前无线侧网元、 移动性管理实体或服务网关; 以及所述本地网关根据所述指示信息对本地 IP数据进行处理。
或者,
在位置更新或切换过程中, 连接判断网元判断目标无线侧网元与本地网 关间是否存在连接, 并根据判断结果向所述本地网关传递指示信息, 所述连 接判断网元指原无线侧网元、 目标无线侧网元、 原移动性管理实体、 目标移 动性管理实体或服务网关;以及所述本地网关根据所述指示信息对本地 IP数 据进行处理。
其中: 连接判断网元判断当前无线侧网元与本地网关间是否存在连接的 步骤或连接判断网元判断目标无线侧网元与本地网关间是否存在连接的步骤 中, 存在以下任一种情况时, 所述连接判断网元判定所述当前无线侧网元与 所述本地网关间存在连接或判定目标无线侧网元与所述本地网关间存在连 接:
所述当前无线侧网元或目标无线侧网元与所述本地网关之间存在接口, 或,
所述当前无线侧网元或目标无线侧网元与所述本地网关合设, 或, 所述当前无线侧网元或目标无线侧网元为初始无线侧网元。
其中, 在服务请求或终端进入空闲态的过程中, 连接判断网元判断当前 无线侧网元与本地网关间是否存在连接的步骤或连接判断网元判断目标无线 侧网元与本地网关间是否存在连接的步骤中:
所述连接判断网元是所述无线侧网元, 所述无线侧网元利用现有或新增 消息通过所述移动性管理实体或服务网关向所述本地网关发送所述指示信 息; 或,
所述连接判断网元是所述移动性管理实体, 所述移动性管理实体利用现 有或新增消息通过服务网关向所述本地网关发送所述指示信息; 或,
所述连接判断网元是所述服务网关, 所述服务网关利用现有或新增消息 直接向所述本地网关发送指示信息。
其中, 在服务请求过程中, 向所述本地网关传递指示信息的步骤中: 所述无线侧网元向所述移动性管理实体发送的指示信息为用于指示其与 本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的无线侧网元与本地网关之间隧道建立指示、 或者无线侧网元 与本地网关间有连接的信息或指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携 带无线侧网元的隧道信息或将下行数据发送给无线侧网元的指示;
所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 向所述无线侧网元转发下行数据;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的不需建立无线侧网元与本地网关之间隧道的指示、 或者建立 服务网关与本地网关之间隧道的指示、 或者无线侧网元与本地网关间没有连 接的信息或指示、 或者消息中不携带建立无线侧网元与本地网关之间隧道的 指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中不 携带无线侧网元隧道信息或者携带将下行数据发给服务网关的指示;
所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 向所述服务网关转发下行数据。
其中, 在终端转入空闲态的过程中, 向所述本地网关传递指示信息的步 驟中:
所述无线侧网元向所述移动性管理实体发送的指示信息为用于指示其与 本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时:
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的无线侧网元与本地网关之间有连接的信息或指示、 或者释放 无线侧网元和本地网关间隧道的指示、 或者建立服务网关和本地网关间隧道 的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携 带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本地网关 间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 释放无线侧网元和本地网关间隧道信息、 建 立服务网关和本地网关间隧道或者进行数据緩存;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体向服务网关发送的指示信息以及所述服务网关向本 地网关发送的指示信息采用以下方式表示: 消息中携带终端进入空闲态的指 示或进行数据緩存的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 进行数据缓存。
其中: 通信系统中, 所述无线侧网元与本地网关合设且所述本地网关在 终端空闲时緩存下行数据;
当连接判断网元判断无线侧网元与本地网关之间存在连接时, 所述服务 网关向本地网关发送的指示信息是通知本地网关进行数据下发的信息; 所述 本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述本地网关 接收所述指示信息后, 将緩存的数据向终端下发;
当连接判断网元判断无线侧网元与本地网关之间不存在连接时, 且本地 网关只保持良务网关隧道信息、 不保存无线侧网元隧道信息的情况下, 所述 服务网关向本地网关发送的指示信息是通知本地网关进行数据下发的信息; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述本地 网关接收所述指示信息后, 将緩存的数据向服务网关转发。
其中, 在位置更新或切换过程中, 向所述本地网关传递指示信息的步骤 中:
所述连接判断网元是所述原无线侧网元, 所述原无线侧网元通过所述原 移动性管理实体、 目标移动性管理实体和服务网关向所述本地网关发送所述 指示信息; 或,
所述连接判断网元是所述目标无线侧网元, 所述目标无线侧网元通过所 述目标移动性管理实体和服务网关向所述本地网关发送所述指示信息; 或, 所述连接判断网元是所述原移动性管理实体, 所述原移动性管理实体通 过目标移动性管理实体和服务网关向所述本地网关发送所述指示信息; 或, 所述连接判断网元是所述目标移动性管理实体, 所述目标移动性管理实 体通过服务网关向所述本地网关发送所述指示信息; 或,
所述连接判断网元是所述服务网关, 所述服务网关直接向所述本地网关 发送指示信息。
其中: 所述原无线侧网元向所述原移动性管理实体发送的指示信息、 所 述目标无线侧网元向所述目标移动性管理实体发送的指示信息、 以及所述原 移动性管理实体向所述目标移动性管理实体发送的指示信息均为用于指示目 标无线侧网元与本地网关间是否存在连接的信息;
当目标无线侧网元与本地网关间存在连接时,
所述目标移动性管理实体向服务网关发送的指示信息采用以下方式表 示: 消息中携带显式的目标无线侧网元与本地网关之间隧道建立指示、 或者 目标无线侧网元与本地网关间有连接的信息或指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携 带目标无线侧网元的隧道信息或将下行数据发送给目标无线侧网元的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,切换 或位置更新完成后, 所述本地网关根据该指示信息向所述目标无线侧网元转 发下行数据;
当目标无线侧网元与本地网关间不存在连接时:
所述目标移动性管理实体向服务网关发送的指示信息采用以下方式表 示:消息中携带显式的不需建立目标无线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网关之间隧道的指示、 或者目标无线侧网元与本地 网关间没有连接的信息或指示、 或者消息中不携带建立目标无线侧网元与本 地网关之间隧道的指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中不 携带目标无线侧网元隧道信息或者携带将下行数据发给服务网关的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,切换 或位置更新完成后, 所述本地网关根据该指示信息向所述服务网关转发下行 数据。
为解决以上技术问题, 本发明还提供一种移动通信系统, 该系统包括无 线侧网元、 本地网关、 移动性管理实体及 务网关, 其中:
所述无线侧网元、 移动性管理实体或服务网关包括:
连接判断模块, 其设置为: 在服务请求或终端进入空闲态的过程中, 判 断当前无线侧网元与本地网关间是否存在连接, 并把判断结果通知信息传递 模块; 或者在切换或位置更新过程中, 判断目标无线侧网元与本地网关间是 否存在连接, 并把判断结杲通知信息传递模块; 以及
信息发送模块,其设置为:根据判断结果向所述本地网关传递指示信息; 所述本地网关设置为: 根据所述指示信息对本地 IP数据进行处理。 其中, 所述连接判断模块是设置为当存在以下任一种情况时, 判定所述 当前无线侧网元与本地网关间存在连接或判定目标无线侧网元与所述本地网 关间存在连接:
所述当前无线侧网元或目标无线侧网元与所述本地网关之间存在接口, 或,
所述当前无线侧网元或目标无线侧网元与所述本地网关合设, 或, 所述当前无线侧网元或目标无线侧网元为初始无线侧网元。
其中: 所述连接判断模块及信息发送模块在所述无线侧网元,所述移动 性管理实体及服务网关包括信息传递模块; 所述无线侧网元的信息发送模块 是设置为按如下方式向所述本地网关传递指示信息: 在服务清求或终端进入 空闲态的过程中, 利用现有或新增消息依次通过所述移动性管理实体和服务 网关的信息传递模块向所述本地网关发送所述指示信息; 或, 在位置更新及 切换过程中,信息发送模块利用现有或新增消息依次通过原移动性管理实体、 目标移动性管理实体及服务网关的信息传递模块向所述本地网关发送所述指 示信息, 或所述目标侧网元利用现有或新增消息依次通过目标移动性管理实 体及服务网关的信息传递模块向所述本地网关发送所述指示信息; 或,
所述连接判断模块及信息发送模块在所述移动性管理实体, 所述服务网 关包括信息传递模块; 所述移动性管理实体的信息发送模块是设置为按如下 方式向所述本地网关传递指示信息:在 务请求或终端进入空闲态的过程中, 利用现有或新增消息通过服务网关的信息传递模块向所述本地网关发送所述 指示信息; 或, 在位置更新及切换过程中, 原移动性管理实体的信息发送模 块利用现有或新增消息通过目标移动性管理实体和服务网关的信息传递模块 向所述本地网关发送所述指示信息, 或目标移动性管理实体的信息发送模块 利用现有或新增消息通过服务网关的信息传递模块向所述本地网关发送所述 指示信息; 或,
所述连接判断模块及信息传递模块在所述服务网关, 所述信息传递模块 是设置为按如下方式向所述本地网关传递指示信息: 利用现有或新增消息直 接向所述本地网关发送指示信息。
其中, 在服务请求过程中:
所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间隧道建立指示、 或者无线侧网元与本地网关间有连接的信息 或指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带无线侧网元的隧道信息或将下行数据发送 给无线侧网元的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息向所述无线侧网元转发下行数据;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的不需建立无 线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网关之间隧 道的指示、 或者无线侧网元与本地网关间没有连接的信息或指示、 或者消息 中不携带建立无线侧网元与本地网关之间隧道的指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带无线侧网元隧道信息或者携带将下行数 据发给服务网关的指示; 所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息向所述服务网关转发下行数据。
其中, 在终端转入空闲态的过程中,
所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息釆用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间有连接的信息或指示、 或者释放无线侧网元和本地网关间隧 道的指示、 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲 态的指示、 或者进行数据缓存的指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示:消息中携带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息释放无线侧网元和本地网关间隧道信息、 建立良务网关和本地网关间隧 道或者进行数据緩存;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息以及所述服务网关的信息发送模块或信息传递模块 向本地网关发送的指示信息采用以下方式表示: 消息中携带终端进入空闲态 的指示或进行数据緩存的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息进行数据緩存。
其中: 所述无线侧网元与本地网关合设且所述本地网关在终端空闲时緩 存下行数据; 当连接判断模块判断无线侧网元与本地网关之间存在连接时, 所述服务 网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知本地 网关进行数据下发的信息; 所述本地网关根据该指示信息将缓存的数据向终 端下发;
当连接判断网元判断无线侧网元与本地网关之间不存在连接时, 且本地 网关只保持良务网关隧道信息、 不保存无线侧网元隧道信息的情况下, 所述 服务网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知 本地网关进行数据下发的信息; 所述本地网关是设置为按如下方式对本地 IP 数据进行处理: 根据该指示信息将緩存的数据向服务网关转发。
其中:
所述原无线侧网元的信息发送模块向所述原移动性管理实体的信息传递 模块发送的指示信息、 所述目标无线侧网元的信息发送模块向所述目标移动 性管理实体的信息传递模块发送的指示信息、 以及所述原移动性管理实体的 信息发送模块向所述目标移动性管理实体的信息传递模块发送的指示信息均 为用于指示目标无线侧网元与本地网关间是否存在连接的信息;
当目标无线侧网元与本地网关间存在连接时,
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息采用以下方式表示: 消息中携带显式的目标无 线侧网元与本地网关之间隧道建立指示、 或者目标无线侧网元与本地网关间 有连接的信息或指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带目标无线侧网元的隧道信息或将下行数据 发送给目标无线侧网元的指示;
完成切换或位置更新后,所述本地网关是设置为按如下方式对本地 IP数 据进行处理: 根据该指示信息向所述目标无线侧网元转发下行数据;
当目标无线侧网元与本地网关间不存在连接时:
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息釆用以下方式表示: 消息中携带显式的不需建 立目标无线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网 关之间隧道的指示、 或者目标无线侧网元与本地网关间没有连接的信息或指 示、 或者消息中不携带建立目标无线侧网元与本地网关之间隧道的指示; 所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带目标无线侧网元隧道信息或者携带将下 行数据发给服务网关的指示;
切换或位置更新完成后,所述本地网关是设置为按如下方式对本地 IP数 据进行处理: 根据指示信息向所述服务网关转发下行数据。
为解决以上技术问题, 本发明还提供一种对本地 IP数据进行管理的方 法, 该方法包括:
在服务请求过程中, 服务网关向本地网关发送通知本地网关进行数据下 发的指示信息; 以及
所述本地网关接收所述指示信息后, 将数据向终端进入空闲态之前的数 据接收网元转发。
其中: 所述数据接收网元指无线侧网元或服务网关。
本发明的对本地 IP数据进行管理的方法以及移动通信系统, 在服务请 求、 终端进入空闲态、 位置更新或切换过程中, 对当前或目标无线侧网元与 本地网关间是否存在连接进行判断, 以便通知本地网关有效处理本地 IP数 据, 即正确的传送或进行数据緩存的场景实现有效区分, 从而保障无线通信 系统正确的逻辑处理流程。 附图概述
附图说明用来提供对本发明的进一步理解, 并且构成说明书的一部分, 与本发明的实施例一起用于解释本发明, 并不构成对本发明的限制。 在附图 中: 图 1为现有技术中无线通信网络连接示意图一;
图 1为现有技术中无线通信网络连接示意图二;
图 3为现有技术中无线通信网络连接示意图三;
图 4为现有技术中无线通信系统本地 IP接入数据流示意图一;
图 5为现有技术中无线通信系统本地 IP接入数据流示意图二; 图 6为现有技术中终端由空闲态转为连接态时进行服务请求过程的流程 图;
图 Ί为本发明实施例一终端由空闲态转为连接态时进行服务请求过程的 流程图;
图 8为本发明实施例二终端由空闲态转为连接态时进行服务请求过程的 又一流程图;
图 9是本发明实施例三终端进行切换过程的流程图;
图 10a是本发明实施例四终端进行位置更新过程的流程图;
图 1 Ob是本发明实施例五终端进行位置更新过程的又一流程图; 图 11a是本发明实施例六终端进入空闲态的流程图;
图 l ib是本发明实施例七终端进入空闲态的又一流程图。 本发明的较佳实施方式
本发明对本地 IP数据进行管理的方法以及本发明的移动通信系统的主 要思想是在服务请求、 终端进入空闲态、 位置更新或切换过程中, 对当前无 线侧网元或目标无线侧网元与本地网关间是否存在连接进行判断, 以便通知 本地网关有效处理本地 IP数据,即正确的传送或进行数据緩存的场景实现有 效区分, 从而保障无线通信系统正确的逻辑处理流程。
在本地 IP连接的情况下, 本发明对本地 IP数据进行管理的方法包括: A、 在服务请求或终端进入空闲态的过程中, 连接判断网元判断当前无 线侧网元与本地网关间是否存在连接, 并才艮据判断结果向所述本地网关传递 指示信息, 所述连接判断网元指当前无线侧网元、 移动性管理实体或服务网 关;
在位置更新或切换过程中, 连接判断网元判断目标无线侧网元与本地网 关间是否存在连接, 并根据判断结果向所述本地网关传递指示信息, 所述连 接判断网元指原无线侧网元、 目标无线侧网元、 原移动性管理实体、 目标移 动性管理实体或服务网关;
B、 所述本地网关 #居所述指示信息对本地 IP数据进行处理。
下面结合附图和具体实施例对本发明所述技术方案作进一步的佯细描 述, 以使本领域的技术人员可以更好的理解本发明并能予以实施, 但所举实 施例不作为对本发明的限定。 需要说明的是, 在不沖突的情况下, 本申请中 的实施例及实施例中的特征可以相互任意组合。
以下实施例图描述了基于演进的通用移动通信系统陆地无线接入网 ( Evolved Universal Terrestrial Radio Access Network, 简称为 E-UTRAN ) 系 统的应用场景。
实施例一
图 7显示了本发明在图 1系统架构的基础上, 提供的终端由空闲态转为 连接态时进行服务请求过程的流程图。 该实施例中由移动性管理实体确定当 前无线侧网元与本地网关间是否有连接, 具体步骤描述如下:
步骤 701, 终端接入无线通信系统后具有本地 IP连接, 此后终端进入空 闲态;
步骤 702, 终端经无线侧网元向移动性管理实体发起服务请求; 步骤 703 ,执行非接入层(Non- Access-Stratum, 简称为 NAS )认证过程, 该步骤可选;
步骤 703a,移动性管理实体确定当前无线侧网元与本地网关间是否有连 接; 其中移动性管理实体可以通过以下方法确定当前无线侧网元与本地网关 间是否有连接: 移动性管理实体在步骤 702之后判断当前无线侧网元与本地 网关之间是否存在接口或者是否合设; 或者, 移动性管理实体保存初始无线 侧网元信息, 在步骤 702之后判断初始无线侧网元和当前无线侧网元是否相 同;
或者也可由无线侧网元判断当前无线侧网元与本地网关间是否有连接 后, 将判断结果发送给移动性管理实体: 无线侧网元判断其与本地网关之间 是否存在接口或是否合设或者自己是否为初始无线侧网元, 并将该信息在步 驟 702或移动性管理实体在步驟 704将终端的本地网关信息或初始无线侧网 元信息, 由无线侧网元确定当前无线侧网元与本地网关间是否有连接, 并在 步骤 706中告知移动性管理实体; 此时, 如果有连接, 则无线侧网元使用本 地网关隧道信息, 将上行数据传送给本地网关; 如果没有连接, 则无线侧网 元使用服务网关隧道信息, 将上行数据传送给服务网关。
如果当前无线侧网元与本地网关之间存在接口或者合设或者初始无线侧 网元与当前无线侧网元相同, 则认为当前无线侧网元与本地网关间有连接。
步骤 704 ,移动性管理实体向无线侧网元发送初始上下文建立请求消息; 如果移动性管理实体确定当前无线侧网元与本地网关间有连接, 则该步 骤 704的初始上下文建立请求消息中携带本地网关的隧道信息。
如果移动性管理实体确定当前无线侧网元与本地网关间没有连接, 则该 步骤 704的初始上下文建立请求消息中携带服务网关的隧道信息。
步骤 705 , 无线侧网元执行无线承载建立过程;
步骤 706 , 无线侧网元回应移动性管理实体初始上下文建立完成消息; 如果移动性管理实体确定当前无线侧网元与本地网关间有连接, 则执行 以下步骤 707至步骤 710:
步骤 707, 移动性管理实体向服务网关发送修改承载请求消息。
移动性管理实体根据判断结果向服务网关传递指示信息, 该指示信息可 以采用以下方式表示: 消息中携带显式的无线侧网元与本地网关之间隧道建 立指示、 或者携带当前无线侧网元与本地网关间有连接的信息或指示。
步骤 708, 服务网关向本地网关发送修改承载请求消息。
本步骤 708中,服务网关向本地网关传递的指示信息釆用以下方式表示: 修改承载请求消息中携带当前无线侧网元隧道信息或者将下行数据发给无线 侧网元的指示。 本地网关收到该指示信息后, 向所述无线侧网元转发下行数 据。
在无线侧网元与本地网关合设且本地网关在终端空闲时緩存下行数据的 情况下, 步骤 708中服务网关向本地网关发送的指示信息可以是通知本地网 关进行数据下发的信息; 本地网关接收所述指示信息后, 将缓存的数据向终 端下发; 此时不需要执行步骤 709。
步骤 709 , 本地网关向服务网关回应修改 载响应消息。
步骤 710 , 服务网关向移动性管理实体回应修改承载响应消息。
在本地网关緩存终端空闲时下行数据的情况下, 如果移动性管理实体确 定当前无线侧网元与本地网关间没有连接, 则执行以下步骤 707a 至步骤 710a:
步骤 707a, 移动性管理实体向服务网关发送修改承载请求消息。
本步骤 707a 中, 移动性管理实体根据判断结果向服务网关传递指示信 息, 该指示信息可以采用以下方式表示: 修改承载请求消息中携带显式的不 需建立无线侧网元与本地网关之间隧道的指示、 或者携带建立服务网关与本 地网关之间隧道的指示、 或者携带无线侧网元与本地网关间没有连接的信息 或指示、 或者不携带建立无线侧网元与本地网关之间隧道的指示。
步骤 708a, 服务网关向本地网关发送修改承载请求消息。
本步骤 708a 中, 服务网关向本地网关传递的指示信息采用以下方式表 示: 修改承载请求消息中不携带当前无线侧网元隧道信息或者携带将下行数 据发给服务网关的指示; 本地网关接收所述指示信息后, 向所述服务网关转 发下行数据。
本地网关在终端空闲时緩存下行数据、 且本地网关只保持服务网关隧道 信息、不保存无线侧网元隧道信息的情况下, 步驟 708a中服务网关向本地网 关向本地网关发送的指示信息是通知本地网关进行数据下发的信息; 本地网 关接收所述指示信息后, 将緩存的数据向服务网关转发, 此时不需要执行步 驟 709a。
步骤 709a, 本地网关向月良务网关回应修改 7 载响应消息。
步骤 710a , 服务网关向移动性管理实体回应修改承载响应消息。
实施例二
图 8显示了本发明在图 1系统架构的基础上, 提供的终端由空闲态转为 连接态时进行服务请求过程的又一流程图。 与实施例一不同之处在于: 服务 网关保存本地网关和初始无线侧网元信息, 在步骤 707之后 (即在步骤 808 中)服务网关判断当前无线侧网元和初始无线侧网元是否相同或者判断当前 无线侧网元与本地网关之间是否存在接口或者是否合设。此时,步骤 707 (即 步骤 807 ) 中不需要携带显式的无线侧网元与本地网关之间隧道建立指示或 者不需要携带当前无线侧网元与本地网关间有连接的信息或指示。 该实施例 中由服务网关确定当前无线侧网元与本地网关间是否有连接, 具体步骤描述 如下:
步骤 801, 终端接入无线通信系统后具有本地 IP连接, 此后终端进入空 闲态。
步骤 802, 终端经无线侧网元向移动性管理实体发起服务请求。
步骤 803, 执行 NAS认证过程, 该步骤可选。
步骤 803a,移动性管理实体确定当前无线侧网元与本地网关间是否有连 接。
其中移动性管理实体可以通过以下方法确定当前无线侧网元与本地网关 间是否有连接: 移动性管理实体在步骤 802之后判断当前无线侧网元与本地 网关之间是否存在接口或者是否合设; 或者, 移动性管理实体保存初始无线 侧网元信息, 在步骤 802之后判断初始无线侧网元和当前无线侧网元是否相 同;
或者, 无线侧网元判断其与本地网关之间是否存在接口或是否合设或者 自己是否为初始无线侧网元,并将该信息在步骤 802中告知移动性管理实体。
如果当前无线侧网元与本地网关之间存在接口或者合设或者初始无线侧 网元与当前无线侧网元相同, 则认为当前无线侧网元与本地网关间有连接。
步骤 804,移动性管理实体向无线侧网元发送初始上下文建立请求消息。 如果移动性管理实体确定当前无线侧网元与本地网关间有连接, 则该步 骤 804的初始上下文建立请求消息中携带本地网关的隧道信息。
如果移动性管理实体确定当前无线侧网元与本地网关间没有连接, 则该 步骤 804的初始上下文建立请求消息中携带服务网关的隧道信息。
或者,
可变换的, 步骤 804携带终端的本地网关信息或初始无线侧网元信息, 由无线侧网元确定当前无线侧网元与本地网关间是否有连接。 如果有连接, 则无线侧网元使用本地网关隧道信息, 将上行数据倖送给本地网关; 如果没 有连接,则无线侧网元使用服务网关隧道信息,将上行数据传送给服务网关。 此时不需要执行步骤 803a。
步骤 805 , 无线侧网元执行无线承载建立过程。
步骤 806 , 无线侧网元回应移动性管理实体初始上下文建立完成消息。 步骤 807 , 移动性管理实体向服务网关发送修改承载请求消息。
步骤 808, 服务网关确定当前无线侧网元与本地网关间是否有连接。 其中服务网关确定当前无线侧网元与本地网关间是否有连接的方法可以 是:在步骤 808之前月良务网关保存本地网关和初始无线侧网元信息,步骤 807 之后服务网关判断当前无线侧网元和初始无线侧网元是否相同或者判断当前 无线侧网元与本地网关之间是否存在接口或者是否合设。 如果当前无线侧网 元与本地网关之间存在接口或者合设或者初始无线侧网元与当前无线侧网元 相同, 则认为当前无线侧网元与本地网关间有连接。 如果服务网关确定当前无线侧网元与本地网关间有连接, 则执行以下步 i 809至步骤 811 :
步骤 809, 服务网关向本地网关发送修改承载请求消息。
如果服务网关确定当前无线侧网元与本地网关间有连接,则步骤 809中, 服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携带当前无 线侧网元隧道信息或者将下行数据发给无线侧网元的指示。
在无线侧网元与本地网关合设且本地网关在终端空闲时緩存下行数据的 情况下, 步骤 809中服务网关向本地网关发送的指示信息是通知本地网关进 行数据下发的信息; 本地网关接收该指示信息后,将緩存的数据向终端下发, 此时不需要执行步骤 810。
步骤 810, 本地网关向服务网关回应修改 载响应消息。
步骤 811 , 服务网关向移动性管理实体回应修改承载响应消息。
在本地网关緩存终端空闲时下行数据的情况下, 如果服务网关确定当前 无线侧网元与本地网关间没有连接, 则执行以下步骤 809a至步骤 81 la: 步骤 809a, 服务网关向本地网关发送修改承载请求消息。
如果服务网关确定当前无线侧网元与本地网关间没有连接, 则步骤 809a 中, 服务网关向本地网关发送的指示信息釆用以上方式表示: 修改承载请求 消息中不携带当前无线侧网元隧道信息或者携带将下行数据发给服务网关的 指示。
本地网关在终端空闲时緩存下行数据、 且本地网关只保持服务网关隧道 信息、不保存无线侧网元隧道信息的情况下, 步骤 809a中服务网关向本地网 关发送的指示信息是通知本地网关进行数据下发的信息; 本地网关接收该指 示信息后, 将緩存的数据向服务网关转发, 此时不需要执行步骤 810a。
步骤 810a, 本地网关向服务网关回应修改承载响应消息。
步驟 811a, 服务网关向移动性管理实体回应修改承载响应消息。
为了实现本发明目的, 本发明还提出另一种解决方案: 在服务请求过程 中, 服务网关向本地网关发送通知本地网关进行数据下发的指示信息; 所述本地网关接收所述指示信息后, 将数据向终端进入空闲态之前的数 据接收网元(无线侧网元或服务网关)转发。 即, 在图 6所示流程中, 在步 驟 608中 , 服务网关在向本地网关发送的修改承载请求中, 携带通知本地网 关进行数据下发的指示信息, 使得本地网关在服务请求流程结束后, 向终端 进入空闲态之前的无线侧网元或服务网关转发数据。
实施例三
图 9是本发明在图 1系统的基础上终端进行切换过程的流程图, 具体步 描述如下:
步骤 901, 无线侧网元判断需要发起 S 1切换;
步骤 902, 原无线侧网元向原移动性管理实体发送切换请求;
步骤 903 , 原移动性管理实体在向目标移动性管理实体发送的重定位前 转请求消息, 可以携带本地网关信息; 步骤 904 , 目标移动性管理实体确定目标无线侧网元与本地网关间是否 有连接;
其中目标移动性管理实体可以通过以下方法确定当前无线侧网元与本地 网关间是否有连接:
目标移动性管理实体在步骤 903之后判断当前无线侧网元与本地网关之 间是否存在接口或者是否合设; 或者, 原移动性管理实体在步骤 903之前判 断目标无线侧网元与本地网关之间是否存在接口或者是否合设, 并在步骤 903 中告知目标移动性管理实体; 或者, 原移动性管理实体保存初始无线侧 网元信息,在步骤 903之前判断初始无线侧网元和目标无线侧网元是否相同, 并在步骤 903中告知目标移动性管理实体; 或者, 原无线侧网元判断目标无 线侧网元与本地网关之间是否存在接口或是否合设或者自己是否为初始无线 侧网元, 并将该信息在步骤 902告知原移动性管理实体; 或者, 目标无线侧 网元判断其与本地网关之间是否存在接口或是否合设或者自己是否为初始无 线侧网元,并将该信息在步骤 907告知目标移动性管理实体(如果在步骤 907 中告知, 则步骤 906需要携带终端的本地网关信息或初始无线侧网元信息, 由目标无线侧网元确定当前无线侧网元与本地网关间是否有连接; 此时, 如 果有连接, 则目标无线侧网元使用本地网关隧道信息, 将上行数据传送给本 地网关; 如果没有连接, 则目标无线侧网元使用服务网关隧道信息, 将上行 数据传送给服务网关) 。
如果目标无线侧网元与本地网关之间存在接口或者合设或者初始无线侧 网元与目标无线侧网元相同, 则认为当前无线侧网元与本地网关间有连接。
步骤 905, 目标移动性管理实体可以向服务网关发起本地 IP连接的会话 建立流程;
步骤 906 , 目标移动性管理实体向目标无线侧网元发送切换请求消息以 请求目标无线侧网元执行切换;
如杲目标移动性管理实体确定目标无线侧网元与本地网关间有连接, 则 该步骤 906的切换请求消息中携带本地网关的隧道信息。
如果目标移动性管理实体确定目标无线侧网元与本地网关间没有连接, 则该步骤 906的切换请求消息中携带服务网关的隧道信息。
步骤 907, 目标无线侧网元向目标移动性管理实体回应切换请求确认消 息;
步骤 908 , 目标移动性管理实体向原移动性管理实体发送重定位前转响 应消息。
步骤 910, 原移动性管理实体向原无线侧网元发送切换命令;
步骤 912, 原无线侧网元向终端发送切换命令;
步骤 913 , 终端向目标无线侧网元发起切换确认消息;
步骤 914, 目标无线侧网元通知目标移动性管理实体进行切换; 步骤 915, 目标无线侧网元向原移动性管理实体发送重定位前转完成通 知消息; 步骤 916 , 原无线侧网元向目标移动性管理实体回复重定位前转完成确 认消息;
如果目标移动性管理实体确定目标无线侧网元与本地网关间有连接, 则 执行以下步骤 917至步骤 922:
步骤 917, 目标移动性管理实体向服务网关发送修改承载请求消息; 本步骤 917中, 目标移动性管理实体根据判断结果向服务网关发送指示 信息, 该指示信息可以采用以下方式表示: 修改承载请求消息中携带显式的 目标无线侧网元与本地网关之间隧道建立指示、 或者携带目标无线侧网元与 本地网关间有连接的信息或指示。
步骤 918, 服务网关向本地网关发送修改承载请求消息;
本步骤 918中,服务网关向本地网关发送的指示信息采用以下方式表示: 修改承载请求消息中携带目标无线侧网元隧道信息或者将下行数据发给无线 侧网元的指示; 本地网关收到该指示信息且切换完成后, 向目标无线侧网元 转发下行数据。
步骤 919, 本地网关回应服务网关修改 ? 载响应;
步骤 920, 服务网关向目标移动性管理实体回应修改承载响应消息; 步骤 922 , 目标移动性管理实体向原无线侧网元发起终端上下文释放流 程。
如果目标移动性管理实体确定目标无线侧网元与本地网关间没有连接, 则执行以下步骤 917a至步骤 922a:
步骤 917a, 目标移动性管理实体向服务网关发送修改承载请求; 目标移动性管理实体根据判断结果向服务网关发送指示信息, 该指示信 息可以采用以下方式表示: 携带显式的不需建立目标无线侧网元与本地网关 之间隧道的指示、 或者携带建立服务网关与本地网关之间隧道的指示、 或者 携带目标无线侧网元与本地网关间没有连接的信息或指示、 或者不携带建立 目标无线侧网元与本地网关之间隧道的指示。 步骤 918a, 服务网关向本地网关发送修改承载请求; 服务网关向本地网关发送的指示信息釆用以下方式表示: 消息中不携带 目标无线侧网元隧道信息或者携带将下行数据发给服务网关的指示, 本地网 关接收到该指示信息且切换完成后, 向服务网关转发下行数据。 送下行数据(例如, 服务网关保存该信息) , 则也可以不需要执行步骤 918a 和 919a„
步骤 919a, 本地网关回应服务网关修改承载响应。
步骤 920a, 服务网关向目标移动性管理实体回应修改承载响应消息。 步骤 922a, 目标移动性管理实体向原无线侧网元发起终端上下文释放流 程。
以上实施例三仅以移动性管理实体确定当前无线侧网元与本地网关间是 否有连接的情况为例来说明切换过程中本地 IP数据的管理方式。 可变换的, 是实例三也可以采用类似图 8的方式, 即由服务网关确定目标无线侧网元与 本地网关间是否有连接。 在该情况下, 服务网关确定目标无线侧网元与本地 网关间是否有连接的方法可以是: 服务网关保存本地网关和初始无线侧网元 信息, 步骤 918之前良务网关判断目标无线侧网元和初始无线侧网元是否相 同或者判断目标无线侧网元与本地网关之间是否存在接口或者是否合设。 如 果目标无线侧网元与本地网关之间存在接口或者合设或者初始无线侧网元与 目标无线侧网元相同, 则认为目标无线侧网元与本地网关间有连接。 如果服 务网关确定目标无线侧网元与本地网关间有连接, 则在步骤 918消息中携带 目标无线侧网元隧道信息或者将下行数据发给无线侧网元的指示。 其余处理 与上述实施例极为相似,不会对阐述本发明造成影响,故在此不再重复描述。
实施例四
图 10a显示了本发明在图 1系统架构基础上, 提供的终端进行位置更新 过程的流程图, 该位置更新过程需要建立无线承载。 具体步骤描述如下: 步骤 1 OaO 1 , 终端经目标无线侧网元向移动性管理实体发送跟踪区更新 请求消息, 可以携带激活标识;
步骤 10a02, 目标移动性管理实体向原移动性管理实体发送上下文请求 消息;
步骤 10a03 , 原移动性管理实体向目标移动性管理实体发送上下文应答 消息, 可以携带本地网关信息;
步骤 10a04, 可选地, 终端、 移动性管理实体、 鉴权授权服务器执行认 证过程;
步骤 10a05, 目标移动性管理实体确定目标无线侧网元与本地网关间是 否有连接;
其中目标移动性管理实体可以通过以下方法确定目标无线侧网元与本地 网关间是否有连接: 目标移动性管理实体在步骤 10a03之后判断目标无线侧 网元与本地网关之间是否存在接口或者是否合设; 或者, 原移动性管理实体 在步骤 10a03之前判断目标无线侧网元与本地网关之间是否存在接口或者是 否合设, 并在步骤 10a03中告知目标移动性管理实体; 或者, 原移动性管理 实体保存初始无线侧网元信息, 在步骤 10a03之前判断初始无线侧网元和目 标无线侧网元是否相同,并在步骤 10a03中告知目标移动性管理实体; 或者, 目标无线侧网元判断其与本地网关之间是否存在接口或是否合设或者自己是 否为初始无线侧网元, 并将该信息在步骤 10a01或步骤 10al5中告知目标移 动性管理实体(如果在步骤 10al5中告知, 则步骤 10al3需要携带终端的本 地网关信息或初始无线侧网元信息, 由目标无线侧网元确定目标无线侧网元 与本地网关间是否有连接; 此时, 如果有连接, 则目标无线侧网元使用本地 网关隧道信息, 将上行数据传送给本地网关; 如果没有连接, 则目标无线侧 网元使用服务网关隧道信息, 将上行数据传送给服务网关) 。 如果目标无线 侧网元与本地网关之间存在接口或者合设或者初始无线侧网元与目标无线侧 网元相同, 则认为目标无线侧网元与本地网关间有连接。
步骤 10a06, 目标移动性管理实体向原移动性管理实体发送上下文确认 消息; 步骤 10a07 , 目标移动性管理实体向服务网关请求承载修改操作; 步骤 10a08, 服务网关可以向本地网关发送修改承载请求;
步骤 10a09, 本地网关可以回应服务网关修改承载响应;
步骤 10al0, 服务网关回应目标移动性管理实体修改承载响应; 步骤 lOal l , 目标移动性管理实体与鉴权授权服务器之间执行位置更新 流程;
步骤 10al2, 鉴权授权服务器与原移动性管理实体之间执行位置取消过 程;
步骤 10al3, 目标移动性管理实体向目标无线侧网元发送初始上下文建 立请求消息;
如果移动性管理实体确定当前无线侧网元与本地网关间有连接, 则该步 骤 10al3的初始上下文建立请求消息中携带本地网关的隧道信息。
如果移动性管理实体确定当前无线侧网元与本地网关间没有连接, 则该 步骤 10al3的初始上下文建立请求消息中携带服务网关的隧道信息。
步骤 10al4, 目标无线侧网元执行无线 7|载建立过程;
步骤 10al5 , 目标无线侧网元回应移动性管理实体初始上下文建立完成 / 无线^载建立完成消息;
如果移动性管理实体确定当前无线侧网元与本地网关间有连接, 则执行 以下步骤 10al6至步骤 10al9:
步骤 10al6, 目标移动性管理实体向服务网关发送修改承载请求消息以 请求服务网关进行承载修改;
步骤 10al6中, 目标移动性管理实体根据判断结果向服务网关发送指示 信息, 该指示信息可以采用以下方式表示: 修改承载请求消息中携带显式的 目标无线侧网元与本地网关之间隧道建立指示、 或者携带目标无线侧网元与 本地网关间有连接的信息或指示。
步骤 1 Oal 7 , 服务网关向本地网关发送修改承栽请求消息。 步骤 10al7中, 服务网关向本地网关发送指示信息该指示信息采用以下 方式表示: 该步骤 10al7的修改承载请求消息中携带目标无线侧网元隧道信 息或者将下行数据发给目标无线侧网元的指示, 本地网关接收到该指示信息 且切换完成后, 向目标无线侧网元转发下行数据。
步骤 10al8, 本地网关向服务网关回应修改承载响应;
步骤 1 Oal 9, 服务网关向目标移动性管理实体发送承载修改响应消息; 如果移动性管理实体确定当前无线侧网元与本地网关间没有连接, 则执 行以下步骤 10al6a至步骤 10al9a:
步骤 10al6a, 目标移动性管理实体向服务网关发送修改承载请求消息以 请求服务网关进行承载修改;
步骤 10al6a中, 目标移动性管理实体根据判断结果向服务网关发送指示 信息, 该指示信息可以采用以下方式表示: 修改承载请求消息中携带显式的 不需建立目标无线侧网元与本地网关之间隧道的指示、 或者携带建立服务网 关与本地网关之间隧道的指示、 或者携带目标无线侧网元与本地网关间没有 连接的信息或指示、 或者不携带建立目标无线侧网元与本地网关之间隧道的 指示。
步骤 1 Oal 7a, 服务网关向本地网关发送修改承载请求消息。
步骤 10al7中, 服务网关向本地网关发送指示信息该指示信息采用以下 方式表示: 修改承载请求消息中不携带目标无线侧网元隧道信息或者携带将 下行数据发给服务网关的指示, 本地网关接收该指示信息且切换完成后, 向 服务网关转发下行数据。 送下行数据(例如,服务网关保存该信息),则也可以不需要执行步骤 10al7a 和 10al8a。
步骤 10al8a, 本地网关向 务网关回应 -改承载响应;
步骤 10al9a, 服务网关向目标移动性管理实体发送承载修改响应消息。 为了简化描述, 以上实施例仅以移动性管理实体确定当前无线侧网元与 本地网关间是否有连接的情况为例来说明本地 IP数据的管理方式。也可以采 用类似图 8的方式, 即由服务网关确定目标无线侧网元与本地网关间是否有 连接。 在该情况下, 服务网关确定目标无线侧网元与本地网关间是否有连接 的方法可以是: 在步骤 10al6之前服务网关保存本地网关和初始无线侧网元 信息, 步骤 10al6之后服务网关判断目标无线侧网元和初始无线侧网元是否 相同或者判断目标无线侧网元与本地网关之间是否存在接口或者是否合设。 如果目标无线侧网元与本地网关之间存在接口或者合设或者初始无线侧网元 与当前无线侧网元相同, 则认为目标无线侧网元与本地网关间有连接。 如果 良务网关确定目标无线侧网元与本地网关间有连接, 则在步骤 10al7消息中 携带目标无线侧网元隧道信息或者将下行数据发给目标无线侧网元的指示。 其余处理与上述实施例极为相似, 不会对阐述本发明造成影响, 故在此不再 重复描述。
实施例五
图 10b显示了本发明在图 1系统架构基础上, 提供的终端进行位置更新 过程的流程图, 该位置更新过程需要建立无线承载。 具体步骤描述如下: 步骤 1 ObO 1 , 终端经目标无线侧网元向移动性管理实体发送跟踪区更新 请求消息, 可以携带激活标识;
步骤 10b02, 目标移动性管理实体向原移动性管理实体发送上下文请求 消息;
步骤 10b03, 原移动性管理实体向目标移动性管理实体发送上下文应答 消息, 可以携带本地网关信息。
步骤 10b04, 可选地, 终端、 移动性管理实体、 鉴权授权服务器执行认 证过程;
步骤 10b05, 目标移动性管理实体确定目标无线侧网元与本地网关间是 否有连接;
其中目标移动性管理实体可以通过以下方法确定目标无线侧网元与本地 网关间是否有连接: 目标移动性管理实体在步骤 10b03之后判断目标无线侧 网元与本地网关之间是否存在接口或者是否合设; 或者, 原移动性管理实体 在步骤 10b03之前判断目标无线侧网元与本地网关之间是否存在接口或者是 否合设, 并在步骤 10b03中告知目标移动性管理实体; 或者, 原移动性管理 实体保存初始无线侧网元信息, 在步骤 10b03之前判断初始无线侧网元和目 标无线侧网元是否相同,并在步骤 10b03中告知目标移动性管理实体; 或者, 目标无线侧网元判断其与本地网关之间是否存在接口或是否合设或者自己是 否为初始无线侧网元, 并将该信息在步骤 10b01或步骤 10bl5中告知移动性 管理实体(如果在步骤 10bl5中告知, 则步骤 10bl3需要携带终端的本地网 关信息或初始无线侧网元信息, 由目标无线侧网元确定目标无线侧网元与本 地网关间是否有连接; 此时, 如果有连接, 则目标无线侧网元使用本地网关 隧道信息, 将上行数据传送给本地网关; 如果没有连接, 则目标无线侧网元 使用服务网关隧道信息, 将上行数据传送给服务网关) 。 如果目标无线侧网 元与本地网关之间存在接口或者合设或者初始无线侧网元与目标无线侧网元 相同, 则认为目标无线侧网元与本地网关间有连接。
步骤 10b06, 目标移动性管理实体向原移动性管理实体发送上下文确认 消息;
如果目标移动性管理实体确定目标无线侧网元与本地网关间有连接, 则 执行以下步骤 10b07至步骤 10b08:
步骤 10b07, 目标移动性管理实体向服务网关请求承载修改操作。
步骤 10b07中目标移动性管理实体根据判断结果向服务网关发送指示信 息, 该指示信息可以采用以下方式表示: 携带显式的目标无线侧网元与本地 网关之间隧道建立指示、 或者携带目标无线侧网元与本地网关间有连接的信 息或指示。
步骤 10b08, 服务网关向本地网关发送修改承载请求消息;
该步 10b08中, 服务网关向本地网关发送指示信息, 该指示信息采用以 下方式表示: 修改承载请求消息中携带目标无线侧网元隧道信息或者将下行 数据发给目标无线侧网元的指示, 本地网关接收该指示信息且位置更新完成 后, 向目标无线侧网元转发下行数据。
如果目标移动性管理实体确定目标无线侧网元与本地网关间没有连接, 则执行以下步骤 10b07a至步骤 10b08a:
步骤 10b07a, 目标移动性管理实体向服务网关请求承载修改操作。
该步 10b07a中,目标移动性管理实体根据判断结果向服务网关发送指示 信息该指示信息可以釆用以下方式表示: 携带显式的不需建立目标无线侧网 元与本地网关之间隧道的指示、 或者携带建立服务网关与本地网关之间隧道 的指示、 或者携带目标无线侧网元与本地网关间没有连接的信息或指示、 或 者不携带建立目标无线侧网元与本地网关之间隧道的指示。
步骤 10b08a, 服务网关向本地网关发送修改承载请求;
该步 10b08a中服务网关向本地网关发送指示信息,该指示信息采用以下 方式表示: 修改承载请求消息中不携带目标无线侧网元隧道信息或者携带将 下行数据发给服务网关的指示,本地网关接收该指示信息且位置更新完成后, 向服务网关转发下行数据。
如果服务网关确定本地网关正在使用服务网关与本地网关之间的隧道发 送下行数据(例如,服务网关保存该信息),则也可以不需要执行步驟 10b08a 和 10b09。
步骤 10b09, 本地网关可以回应服务网关爹改承载响应;
步骤 10bl0, 服务网关回应目标移动性管理实体修改承载响应; 步骤 10bl l, 目标移动性管理实体与鉴权授权服务器之间执行位置更新 流程。
步骤 10bl2, 鉴权授权服务器与原移动性管理实体之间执行位置取消过 程;
步骤 10bl3 , 目标移动性管理实体向目标无线侧网元发送初始上下文建 立请求消息;
如果移动性管理实体确定目标无线侧网元与本地网关间有连接, 则该步 驟 10bl3的初始上下文建立请求消息中携带本地网关的隧道信息。
如果移动性管理实体确定目标无线侧网元与本地网关间没有连接, 则该 步骤 10bl3的初始上下文建立请求消息中携带服务网关的隧道信息。
步骤 10bl4, 目标无线侧网元执行无线承载建立过程;
步骤 10bl5, 目标无线侧网元回应移动性管理实体初始上下文建立完成 / 无线承载建立完成消息;
步骤 10bl6, 移动性管理实体请求服务网关进行承载修改;
步骤 10bl7, 服务网关向目标移动性管理实体发送承载修改响应消息。 为了简化描述, 以上实施例仅以移动性管理实体确定目标无线侧网元与 本地网关间是否有连接的情况为例来说明本地 IP数据的管理方式。也可以采 用类似图 8的方式, 即由服务网关确定目标无线侧网元与本地网关间是否有 连接。 在该情况下, 服务网关确定目标无线侧网元与本地网关间是否有连接 的方法可以是: 在步骤 10b07之前服务网关保存本地网关和初始无线侧网元 信息, 步骤 10b07之后月良务网关判断目标无线侧网元和初始无线侧网元是否 相同或者判断目标无线侧网元与本地网关之间是否存在接口或者是否合设。 如果目标无线侧网元与本地网关之间存在接口或者合设或者初始无线侧网元 与当前无线侧网元相同, 则认为目标无线侧网元与本地网关间有连接。 如果 服务网关确定目标无线侧网元与本地网关间有连接, 则在步骤 10b08消息中 携带目标无线侧网元隧道信息或者将下行数据发给目标无线侧网元的指示。 其余处理与上述实施例极为相似, 不会对阐述本发明造成影响, 故在此不再 重复描述。
实施例六
图 11a显示了本发明在图 1系统架构基础上, 提供的终端进入空闲态的 流程图。 具体步骤描述如下:
步骤 11 a01 , 终端接入无线通信系统后具有本地 IP连接;
步骤 l la02, 无线侧网元向移动性管理实体发起终端上下文释放请求; 步骤 l la03, 移动性管理实体确定当前无线侧网元与本地网关间是否有 连接;
其中移动性管理实体可以通过以下方法确定当前无线侧网元与本地网关 间是否有连接: 移动性管理实体在步骤 l la03之前判断当前无线侧网元与本 地网关之间是否存在接口或者是否合设; 或者, 移动性管理实体保存初始无 线侧网元信息, 在步骤 l la03之前判断初始无线側网元和当前无线侧网元是 否相同; 或者, 无线侧网元判断其与本地网关之间是否存在接口或是否合设 或者自己是否为初始无线侧网元, 并将该信息在步骤 l la02中告知移动性管 理实体。 如果当前无线侧网元与本地网关之间存在接口或者合设或者初始无 线侧网元与当前无线侧网元相同, 则认为当前无线侧网元与本地网关间有连 接。
步骤 l la04 , 移动性管理实体向服务网关发送幹放承载请求消息以请求 服务网关释放无线承载, 携带指示信息;
若当前无线侧网元与本地网关有连接, 该指示信息可以采用以下方式表 示: 携带显式的无线侧网元与本地网关之间有连接的信息或指示、 或者幹放 无线侧网元和本地网关间隧道的指示、 或者建立服务网关和本地网关间隧道 的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示。
步骤 l la05 , 服务网关向本地网关发送承载修改请求或承载释放请求消 息, 携带指示信息;
如果服务网关发现当前无线侧网元与本地网关间有连接, 则步骤 l la05 消息携带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本 地网关间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指 示, 该指示可以用于区分终端进入空闲态流程与服务箭求 /位置更新过程 /切 换过程。本地网关接收该指示信息后,译放无线侧网元和本地网关间隧道信、 建立服务网关和本地网关间隧道或者进行数据緩存。
如杲服务网关发现当前无线側网元与本地网关间没有连接 , 则步骤 l la04、 l la05的指示信息采用以下方式表示: 承载修改请求或承载释放请求 消息中携带终端进入空闲态的指示、 或者进行数据缓存的指示, 该指示可以 用于区分终端进入空闲态流程与服务请求 /位置更新过程 /切换过程。 本地网 关接收该指示信息后, 进行数据緩存。
步骤 l la06, 本地网关向服务网关回应承载修改响应或承载释放响应; 步骤 l la07, 服务网关向移动性管理实体发送释放无线承载响应。
图 l ib显示了本发明在图 1系统架构基础上, 提供的终端进入空闲态的 流程图。 具体步骤描述如下:
步骤 1 lbO 1 , 终端接入无线通信系统后具有本地 IP连接;
步骤 l lb02, 无线侧网元向移动性管理实体发起终端上下文释放请求; 步骤 l lb03, 移动性管理实体请求服务网关释放无线承载;
步骤 l lb04, 服务网关确定当前无线侧网元与本地网关间是否有连接; 其中服务网关确定当前无线侧网元与本地网关间是否有连接的方法可以 是: 在步骤 llb03之前服务网关保存本地网关和初始无线侧网元信息, 步骤 1 lb03 之后服务网关判断当前无线侧网元和初始无线侧网元是否相同或者判 断当前无线侧网元与本地网关之间是否存在接口或者是否合设。 如果当前无 线侧网元与本地网关之间存在接口或者合设或者初始无线侧网元与当前无线 侧网元相同, 则认为当前无线侧网元与本地网关间有连接。
步骤 l lb05, 服务网关向本地网关发送承载修改请求或承载释放请求, 携带指示信息;
如果服务网关确定当前无线侧网元与本地网关间有连接, 则步骤 l lb05 中的指示信息采用以下方式表示: 承栽修改请求或承载释放请求消息中携带 显式的无线侧网元与本地网关之间有连接的信息或指示, 释放无线侧网元和 本地网关间隧道的指示, 或者建立服务网关和本地网关间隧道的指示、 或者 终端进入空闲态的指示、 或者进行数据缓存的指示, 该指示可以用于区分终 端进入空闲态流程与服务请求 /位置更新过程 /切换过程。 本地网关接收所述 指示信息后, 释放无线侧网元和本地网关间隧道信息、 建立服务网关和本地 网关间隧道或者进行数据緩存。
如果服务网关确定当前无线側网元与本地网关间没有连接, 则步骤 l lb05 的指示信息采用以下方式表示: 承载修改请求或承载释放请求消息中 携带终端进入空闲态的指示、 或者进行数据緩存的指示, 该指示可以用于区 分终端进入空闲态流程与服务请求 /位置更新过程 /切换过程。 本地网关接收 所述指示信息后, 进行数据緩存。
步骤 l lb06, 本地网关向服务网关回应承载修改响应或承载释放响应; 步骤 l lb07, 服务网关向移动性管理实体发送释放无线承载响应。
为了实现以上方法, 本发明还提供了一种移动通信系统, 包括无线侧网 元、 本地网关、 移动性管理实体及服务网关, 其中:
所述无线侧网元、 移动性管理实体或服务网关包括:
连接判断模块设置为: 在服务请求或终端进入空闲态的过程中, 判断当 前无线侧网元与本地网关间是否存在连接, 以及在切换或位置更新过程中, 判断目标无线侧网元与本地网关间是否存在连接, 并 判断结果通知信息传 递模块;
信息发送模块设置为: 根据判断结果向所述本地网关传递指示信息; 所述本地网关设置为: 根据所述指示信息对本地 IP数据进行处理。
存在以下任一种情况时, 所述连接判断模块判定所述当前无线侧网元或 目标无线侧网元与所述本地网关间存在连接:
所述当前或目标无线侧网元与所述本地网关之间存在接口, 或, 所述当前或目标无线侧网元与所述本地网关合设, 或,
所述当前或目标无线侧网元为初始无线侧网元。
进一步地,
所述连接判断模块及信息发送模块在所述无线侧网元, 所述移动性管理 实体及服务网关包括信息传递模块,在服务请求或终端进入空闲态的过程中, 所述无线侧网元的信息发送模块利用现有或新增消息依次通过所述移动性管 理实体、 服务网关的信息传递模块向所述本地网关发送所述指示信息; 或, 在位置更新及切换过程中, 所述原无线侧网元的信息发送模块利用现有或新 增消息依次通过原移动性管理实体、 目标移动性管理实体及服务网关的信息 传递模块向所述本地网关发送所述指示信息, 或所述目标侧网元利用现有或 新增消息依次通过目标移动性管理实体及服务网关的信息传递模块向所述本 地网关发送所述指示信息; 或,
所述连接判断模块及信息发送模块在所述移动性管理实体, 所述服务网 关包括信息传递模块, 在服务请求或终端进入空闲态的过程中, 所述移动性 管理实体的信息发送模块利用现有或新增消息通过良务网关的信息传递模块 向所述本地网关发送所述指示信息; 或, 在位置更新及切换过程中, 原移动 性管理实体的信息发送模块利用现有或新增消息通过目标移动性管理实体和 服务网关的信息传递模块向所述本地网关发送所述指示信息, 或目标移动性 管理实体的信息发送模块利用现有或新增消息通过 JI良务网关的信息传递模块 向所述本地网关发送所述指示信息; 或,
所述连接判断模块及信息传递模块在所述服务网关, 所述信息传递模块 利用现有或新增消息直接向所述本地网关发送指示信息。
进一步地, 对应实施例一、 二, 在服务请求过程中:
所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间隧道建立指示、 或者无线侧网元与本地网关间有连接的信息 或指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带无线侧网元的隧道信息或将下行数据发送 给无线侧网元的指示;
所述本地网关根据该指示信息向所述无线侧网元转发下行数据; 当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的不需建立无 线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网关之间隧 道的指示、 或者无线侧网元与本地网关间没有连接的信息或指示、 或者消息 中不携带建立无线侧网元与本地网关之间隧道的指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带无线侧网元隧道信息或者携带将下行数 据发给服务网关的指示;
所述本地网关根据该指示信息向所述服务网关转发下行数据。
进一步地, 对应实施例六、 七, 在终端转入空闲态的过程中, 所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息釆用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间有连接的信息或指示、 或者释放无线侧网元和本地网关间隧 道的指示、 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲 态的指示、 或者进行数据緩存的指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示:消息中携带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示;
所述本地网关根据该指示信息幹放无线侧网元和本地网关间隧道信息、 建立服务网关和本地网关间隧道或者进行数据緩存;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息以及所述服务网关的信息发送模块或信息传递模块 向本地网关发送的指示信息采用以下方式表示: 消息中携带终端进入空闲态 的指示或进行数据缓存的指示;
所述本地网关根据该指示信息进行数据緩存。
进一步地, 对应实施例一、 二,
所述无线侧网元与本地网关合设且所述本地网关在终端空闲时緩存下行 数据;
当连接判断模块判断无线侧网元与本地网关之间存在连接时, 所述服务 网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知本地 网关进行数据下发的信息; 所述本地网关根据该指示信息将緩存的数据向终 端下发;
当连接判断网元判断无线侧网元与本地网关之间不存在连接时, 且本地 网关只保持良务网关隧道信息、 不保存无线侧网元隧道信息的情况下, 所述 服务网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知 本地网关进行数据下发的信息; 所述本地网关根据该指示信息将緩存的数据 向服务网关转发。
进一步地, 对应实施例三、 四、 五,
所述原无线侧网元的信息发送模块向所述原移动性管理实体的信息传递 模块发送的指示信息、 所述目标无线侧网元的信息发送模块向所述目标移动 性管理实体的信息传递模块发送的指示信息、 所述原移动性管理实体的信息 发送模块向所述目标移动性管理实体的信息传递模块发送的指示信息均为用 于指示目标无线侧网元与本地网关间是否存在连接的信息;
当目标无线侧网元与本地网关间存在连接时,
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息采用以下方式表示: 消息中携带显式的目标无 线侧网元与本地网关之间隧道建立指示、 或者目标无线侧网元与本地网关间 有连接的信息或指示; 所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带目标无线侧网元的隧道信息或将下行数据 发送给目标无线側网元的指示;
切换或位置更新完成后, 所述本地网关 # ^据该指示信息向所述目标无线 侧网元转发下行数据;
当目标无线侧网元与本地网关间不存在连接时:
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息采用以下方式表示: 消息中携带显式的不需建 立目标无线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网 关之间隧道的指示、 或者目标无线侧网元与本地网关间没有连接的信息或指 示、 或者消息中不携带建立目标无线侧网元与本地网关之间隧道的指示; 所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带目标无线侧网元隧道信息或者携带将下 行数据发给服务网关的指示;
切换或位置更新完成后, 所述本地网关根据该切换指示向所述服务网关 转发下行数据。
本发明所说的初始无线侧网元指在本地 IP连接建立时终端初始接入的 无线侧网元; 隧道信息可以是以下一种或多种组合: ID、 标识、 地址、 以及 隧道端点标识( Tunnel Endpoint Identifier, TEID ) ; 本地网关信息、 无线侧 网元信息、月 务网关信息可以是以下一种或多种组合: ID、 标识、 以及地址。
为了简化描述,以上实施例仅以图 1的情况为例来说明本地 IP连接的管 理方式。 在图 2、 图 3系统的情况下, 对本地 IP数据进行管理的方法与上述 实施例极为相似, 不会对阐述本发明造成影响, 故在此不再重复描述。
需要说明的是, 本发明中, 本地网关接收的指示信息只是用于通知本地 网关与无线侧网元间存在连接的关联信息, 本地网关接收指示信息后, 以该 指示信息作为触发条件, 并根据该指示信息对本地 IP数据的进行处理,确定 对本地 IP数据的处理方式, 包括转发、 缓存数据以及对本地 IP数据隧道进 行建立或释放等。
无线侧网元(主要负责无线信号的收发, 通过空中接口和终端联系, 管 理空中接口的无线资源、 资源调度、 接入控制、 NAT、 本地 IP访问策略路由 和执行、 数据分流等功能)可以是基站、 家用基站、 无线网络控制器(Radio Network Controller, 筒称为 RNC )、 家用基站网关、 以及数据分流功能实体。
移动性管理实体(负责终端到网络的非接入层信令管理、 终端的安全验 证功能、 终端的移动性管理、 用户空闲模式下的跟踪和寻呼管理功能和承载 管理)可以为移动管理单元( Mobility Management Entity , 简称为 ΜΜΕ ) 、 移动交换中心( Mobile Switching Centre, 简称为 MSC )、 服务 GPRS支持节 点 ( Serving GPRS Support Node, 简称为 SGSN ) 。
本地网关(作为本地接入到外部网络如 Internet, 的网关, 本地网关提供 地址分配、 计费、 分组包过滤、 策略控制、 数据分流功能、 NAS/S1-AP/RANAP/GTP/PMIP/MIP消息解析、 NAT、 本地 IP访问策略路由 和执行、 以及数据分流等功能)可以是 L-SGW和 L-PGW, 可以是单独的 L-PGW, 可以是 L-GGSN和 L-SGSN, 可以是单独的 L-GGSN, 可以是数据 分流功能实体。
服务网关 (服务网关是核心网到无线系统的网关, 负责终端到核心网的 用户面承载、 终端空闲模式下的数据緩存、 网络侧发起业务请求的功能、 合 法监听和分组数据路由和转发功能; 服务网关负责统计用户终端使用无线网 的情况, 并产生终端使用无线网的话单, 传送给计费网关)可以为 SGW、 SGSN。
接入网关 (接入网关是演进系统和该系统外部分组数据网络的网关, 它 连接到因特网和分组数据网络上, 负责终端的互联网协议(Internet Protocol, 筒称为 IP )地址分配、计费功能、分组包过滤、策略控制等功能)可以是 PGW、 或 GGSN。
本地 IP连接的无线侧网元可以与本地网关地址相同。 本地网关信息可以是本地网关地址、 或本地网关标识、 以及本地网关名 称中的一种或多种。
本地 IP连接可以是本地 IP访问用户本地网络、本地 IP访问公司本地网 络、 本地 IP访问互联网、 互联网业务的分流操作、 或特定 IP数据分流。
位置更新可以是跟踪区更新、 或路由区更新。
显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 或 者将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制 作成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软 件结合。
以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
工业实用性 本发明在服务请求、 终端进入空闲态、 位置更新或切换过程中, 对当前 或目标无线侧网元与本地网关间是否存在连接进行判断, 以便通知本地网关 有效处理本地 IP数据, 即正确的传送或进行数据緩存的场景实现有效区分, 从而保障无线通信系统正确的逻辑处理流程。

Claims

权 利 要 求 书
1、 一种对本地 IP数据进行管理的方法, 其特征在于, 在本地 IP连接的 情况下, 该方法包括:
在服务请求或终端进入空闲态的过程中, 连接判断网元判断当前无线侧 网元与本地网关间是否存在连接, 并根据判断结果向所述本地网关传递指示 信息, 所述连接判断网元指当前无线侧网元、 移动性管理实体或服务网关; 以及所述本地网关根据所述指示信息对本地 IP数据进行处理。
或者,
在位置更新或切换过程中, 连接判断网元判断目标无线侧网元与本地网 关间是否存在连接, 并根据判断结果向所述本地网关传递指示信息, 所述连 接判断网元指原无线侧网元、 目标无线侧网元、 原移动性管理实体、 目标移 动性管理实体或服务网关;以及所述本地网关根据所述指示信息对本地 IP数 据进行处理。
2、如权利要求 1所述的方法, 其中: 连接判断网元判断当前无线侧网元 与本地网关间是否存在连接的步骤或连接判断网元判断目标无线侧网元与本 地网关间是否存在连接的步骤中, 存在以下任一种情况时, 所述连接判断网 元判定所述当前无线侧网元与所迷本地网关间存在连接或判定目标无线侧网 元与所述本地网关间存在连接:
所述当前无线侧网元或目标无线侧网元与所述本地网关之间存在接口, 或,
所述当前无线侧网元或目标无线侧网元与所述本地网关合设, 或, 所述当前无线侧网元或目标无线侧网元为初始无线侧网元。
3、如权利要求 1所述的方法, 其中,在服务请求或终端进入空闲态的过 程中, 连接判断网元判断当前无线侧网元与本地网关间是否存在连接的步骤 或连接判断网元判断目标无线侧网元与本地网关间是否存在连接的步骤中: 所述连接判断网元是所述无线侧网元, 所述无线侧网元利用现有或新增 消息通过所述移动性管理实体或服务网关向所述本地网关发送所述指示信 息; 或,
所述连接判断网元是所述移动性管理实体, 所述移动性管理实体利用现 有或新增消息通过服务网关向所述本地网关发送所述指示信息; 或,
所述连接判断网元是所述服务网关 , 所述服务网关利用现有或新增消息 直接向所述本地网关发送指示信息。
4、 如权利要求 3所述的方法, 其中, 在服务请求过程中, 向所述本地网 关传递指示信息的步骤中:
所述无线侧网元向所述移动性管理实体发送的指示信息为用于指示其与 本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的无线侧网元与本地网关之间隧道建立指示、 或者无线侧网元 与本地网关间有连接的信息或指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携 带无线侧网元的隧道信息或将下行数据发送给无线侧网元的指示;
所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 向所述无线侧网元转发下行数据;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的不需建立无线侧网元与本地网关之间隧道的指示、 或者建立 服务网关与本地网关之间隧道的指示、 或者无线侧网元与本地网关间没有连 接的信息或指示、 或者消息中不携带建立无线侧网元与本地网关之间隧道的 指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中不 携带无线侧网元隧道信息或者携带将下行数据发给服务网关的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后 , 向所述服务网关转发下行数据。
5、 如权利要求 3所述的方法, 其中, 在终端转入空闲态的过程中, 向所 述本地网关传递指示信息的步骤中:
所述无线侧网元向所述移动性管理实体发送的指示信息为用于指示其与 本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时:
所述移动性管理实体向服务网关发送的指示信息采用以下方式表示: 消 息中携带显式的无线侧网元与本地网关之间有连接的信息或指示、 或者释放 无线侧网元和本地网关间隧道的指示、 或者建立服务网关和本地网关间隧道 的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中携 带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本地网关 间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 释放无线侧网元和本地网关间隧道信息、 建 立服务网关和本地网关间隧道或者进行数据缓存;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体向服务网关发送的指示信息以及所述服务网关向本 地网关发送的指示信息釆用以下方式表示: 消息中携带终端进入空闲态的指 示或进行数据緩存的指示;
所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述 本地网关接收所述指示信息后, 进行数据緩存。
6> 如权利要求 4所述的方法, 其中: 通信系统中, 所述无线侧网元与本 地网关合设且所述本地网关在终端空闲时缓存下行数据; 当连接判断网元判断无线侧网元与本地网关之间存在连接时, 所述服务 网关向本地网关发送的指示信息是通知本地网关进行数据下发的信息; 所述 本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述本地网关 接收所述指示信息后, 将緩存的数据向终端下发;
当连接判断网元判断无线侧网元与本地网关之间不存在连接时, 且本地 网关只保持良务网关隧道信息、 不保存无线侧网元隧道信息的情况下, 所述 服务网关向本地网关发送的指示信息是通知本地网关进行数据下发的信息; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,所述本地 网关接收所述指示信息后, 将緩存的数据向服务网关转发。
7、 如权利要求 1所述的方法, 其中, 在位置更新或切换过程中, 向所述 本地网关传递指示信息的步骤中:
所述连接判断网元是所述原无线侧网元, 所述原无线侧网元通过所述原 移动性管理实体、 目标移动性管理实体和服务网关向所述本地网关发送所述 指示信息; 或,
所述连接判断网元是所述目标无线侧网元, 所述目标无线侧网元通过所 述目标移动性管理实体和服务网关向所述本地网关发送所述指示信息; 或, 所述连接判断网元是所述原移动性管理实体, 所述原移动性管理实体通 过目标移动性管理实体和服务网关向所述本地网关发送所述指示信息; 或, 所述连接判断网元是所述目标移动性管理实体, 所述目标移动性管理实 体通过服务网关向所述本地网关发送所述指示信息; 或,
所述连接判断网元是所述服务网关, 所述服务网关直接向所述本地网关 发送指示信息。
8、 如权利要求 7所述的方法, 其中:
所述原无线侧网元向所述原移动性管理实体发送的指示信息、 所述目标 无线侧网元向所述目标移动性管理实体发送的指示信息、 以及所述原移动性 管理实体向所述目标移动性管理实体发送的指示信息均为用于指示目标无线 侧网元与本地网关间是否存在连接的信息;
当目标无线侧网元与本地网关间存在连接时,
所述目标移动性管理实体向服务网关发送的指示信息采用以下方式表 示: 消息中携带显式的目标无线侧网元与本地网关之间隧道建立指示、 或者 目标无线侧网元与本地网关间有连接的信息或指示;
所述服务网关向本地网关发送的指示信息釆用以下方式表示: 消息中携 带目标无线侧网元的隧道信息或将下行数据发送给目标无线侧网元的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,切换 或位置更新完成后, 所述本地网关根据该指示信息向所述目标无线侧网元转 发下行数据;
当目标无线侧网元与本地网关间不存在连接时:
所述目标移动性管理实体向服务网关发送的指示信息采用以下方式表 示:消息中携带显式的不需建立目标无线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网关之间隧道的指示、 或者目标无线侧网元与本地 网关间没有连接的信息或指示、 或者消息中不携带建立目标无线侧网元与本 地网关之间隧道的指示;
所述服务网关向本地网关发送的指示信息采用以下方式表示: 消息中不 携带目标无线侧网元隧道信息或者携带将下行数据发给服务网关的指示; 所述本地网关根据所述指示信息对本地 IP数据进行处理的步骤中,切换 或位置更新完成后, 所述本地网关根据该指示信息向所述服务网关转发下行 数据。
9、 一种移动通信系统, 该系统包括无线侧网元、 本地网关、 移动性管理 实体及服务网关, 其中:
所述无线侧网元、 移动性管理实体或服务网关包括:
连接判断模块, 其设置为: 在服务请求或终端进入空闲态的过程中, 判 断当前无线侧网元与本地网关间是否存在连接, 并把判断结果通知信息传递 模块; 或者在切换或位置更新过程中, 判断目标无线侧网元与本地网关间是 否存在连接, 并把判断结果通知信息传递模块; 以及
信息发送模块,其设置为:根据判断结果向所述本地网关传递指示信息; 所述本地网关设置为: 根据所述指示信息对本地 IP数据进行处理。
10、 如权利要求 9所述的系统, 其中, 所述连接判断模块是设置为当存 在以下任一种情况时, 判定所述当前无线侧网元与本地网关间存在连接或判 定目标无线侧网元与所述本地网关间存在连接:
所述当前无线侧网元或目标无线侧网元与所述本地网关之间存在接口, 或,
所述当前无线侧网元或目标无线侧网元与所述本地网关合设, 或, 所述当前无线侧网元或目标无线侧网元为初始无线侧网元。
11、 如权利要求 9所述的系统, 其中:
所述连接判断模块及信息发送模块在所述无线侧网元, 所述移动性管理 实体及服务网关包括信息传递模块; 所述无线侧网元的信息发送模块是设置 为按如下方式向所述本地网关传递指示信息: 在服务奇求或终端进入空闲态 的过程中, 利用现有或新增消息依次通过所述移动性管理实体和服务网关的 信息传递模块向所述本地网关发送所述指示信息; 或, 在位置更新及切换过 程中, 信息发送模块利用现有或新增消息依次通过原移动性管理实体、 目标 移动性管理实体及服务网关的信息传递模块向所述本地网关发送所述指示信 息, 或所述目标侧网元利用现有或新增消息依次通过目标移动性管理实体及 服务网关的信息传递模块向所述本地网关发送所述指示信息; 或,
所述连接判断模块及信息发送模块在所述移动性管理实体, 所述服务网 关包括信息传递模块; 所述移动性管理实体的信息发送模块是设置为按如下 方式向所述本地网关传递指示信息:在月良务请求或终端进入空闲态的过程中, 利用现有或新增消息通过服务网关的信息传递模块向所述本地网关发送所述 指示信息; 或, 在位置更新及切换过程中, 原移动性管理实体的信息发送模 块利用现有或新增消息通过目标移动性管理实体和服务网关的信息传递模块 向所述本地网关发送所述指示信息, 或目标移动性管理实体的信息发送模块 利用现有或新增消息通过服务网关的信息传递模块向所述本地网关发送所述 指示信息; 或,
所述连接判断模块及信息传递模块在所述服务网关, 所述信息传递模块 是设置为按如下方式向所述本地网关传递指示信息: 利用现有或新增消息直 接向所述本地网关发送指示信息。
12、 如权利要求 11所述的系统, 其中, 在服务请求过程中: 所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间隧道建立指示、 或者无线侧网元与本地网关间有连接的信息 或指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带无线侧网元的隧道信息或将下行数据发送 给无线侧网元的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息向所述无线侧网元转发下行数据;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息采用以下方式表示: 消息中携带显式的不需建立无 线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网关之间隧 道的指示、 或者无线侧网元与本地网关间没有连接的信息或指示、 或者消息 中不携带建立无线侧网元与本地网关之间隧道的指示; 所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带无线侧网元隧道信息或者携带将下行数 据发给服务网关的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息向所述服务网关转发下行数据。
13、 如权利要求 11所述的系统, 其中, 在终端转入空闲态的过程中, 所述无线侧网元的信息发送模块向所述移动性管理实体的信息传递模块 发送的指示信息为用于指示其与本地网关间是否存在连接的信息;
当无线侧网元与本地网关间存在连接时,
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息釆用以下方式表示: 消息中携带显式的无线侧网元 与本地网关之间有连接的信息或指示、 或者释放无线侧网元和本地网关间隧 道的指示、 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲 态的指示、 或者进行数据缓存的指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示:消息中携带释放无线侧网元和本地网关间隧道的指示, 或者建立服务网关和本地网关间隧道的指示、 或者终端进入空闲态的指示、 或者进行数据緩存的指示;
所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息释放无线侧网元和本地网关间隧道信息、 建立服务网关和本地网关间隧 道或者进行数据緩存;
当无线侧网元与本地网关间不存在连接时:
所述移动性管理实体的信息发送模块或信息传递模块向服务网关的信息 传递模块发送的指示信息以及所述服务网关的信息发送模块或信息传递模块 向本地网关发送的指示信息采用以下方式表示: 消息中携带终端进入空闲态 的指示或进行数据緩存的指示; 所述本地网关是设置为按如下方式对本地 IP数据进行处理:根据该指示 信息进行数据缓存。
14、 如权利要求 12所述的系统, 其中:
所述无线侧网元与本地网关合设且所述本地网关在终端空闲时緩存下行 数据;
当连接判断模块判断无线侧网元与本地网关之间存在连接时, 所述服务 网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知本地 网关进行数据下发的信息; 所述本地网关根据该指示信息将緩存的数据向终 端下发;
当连接判断网元判断无线侧网元与本地网关之间不存在连接时, 且本地 网关只保持良务网关隧道信息、 不保存无线侧网元隧道信息的情况下, 所述 服务网关的信息发送模块或信息传递模块向本地网关发送的指示信息是通知 本地网关进行数据下发的信息; 所述本地网关是设置为按如下方式对本地 IP 数据进行处理: 根据该指示信息将缓存的数据向服务网关转发。
15、 如权利要求 11所述的系统, 其中:
所述原无线侧网元的信息发送模块向所述原移动性管理实体的信息传递 模块发送的指示信息、 所述目标无线侧网元的信息发送模块向所述目标移动 性管理实体的信息传递模块发送的指示信息、 以及所述原移动性管理实体的 信息发送模块向所述目标移动性管理实体的信息传递模块发送的指示信息均 为用于指示目标无线侧网元与本地网关间是否存在连接的信息;
当目标无线侧网元与本地网关间存在连接时,
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息采用以下方式表示: 消息中携带显式的目标无 线侧网元与本地网关之间隧道建立指示、 或者目标无线侧网元与本地网关间 有连接的信息或指示;
所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中携带目标无线侧网元的隧道信息或将下行数据 发送给目标无线侧网元的指示;
完成切换或位置更新后,所述本地网关是设置为按如下方式对本地 IP数 据进行处理: 根据该指示信息向所述目标无线侧网元转发下行数据;
当目标无线侧网元与本地网关间不存在连接时:
所述目标移动性管理实体的信息发送模块或信息传递模块向服务网关的 信息传递模块发送的指示信息采用以下方式表示: 消息中携带显式的不需建 立目标无线侧网元与本地网关之间隧道的指示、 或者建立服务网关与本地网 关之间隧道的指示、 或者目标无线侧网元与本地网关间没有连接的信息或指 示、 或者消息中不携带建立目标无线侧网元与本地网关之间隧道的指示; 所述服务网关的信息发送模块或信息传递模块向本地网关发送的指示信 息采用以下方式表示: 消息中不携带目标无线侧网元隧道信息或者携带将下 行数据发给服务网关的指示;
切换或位置更新完成后,所述本地网关是设置为按如下方式对本地 IP数 据进行处理: 根据指示信息向所述服务网关转发下行数据。
16、 一种对本地 IP数据进行管理的方法, 该方法包括:
在服务请求过程中, 服务网关向本地网关发送通知本地网关进行数据下 发的指示信息; 以及
所述本地网关接收所述指示信息后, 将数据向终端进入空闲态之前的数 据接收网元转发。
17、如权利要求 16所述的方法, 其中: 所述数据接收网元指无线侧网元 或服务网关。
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