WO2010127490A1 - 实现本地路由的方法、装置及系统 - Google Patents

实现本地路由的方法、装置及系统 Download PDF

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Publication number
WO2010127490A1
WO2010127490A1 PCT/CN2009/071671 CN2009071671W WO2010127490A1 WO 2010127490 A1 WO2010127490 A1 WO 2010127490A1 CN 2009071671 W CN2009071671 W CN 2009071671W WO 2010127490 A1 WO2010127490 A1 WO 2010127490A1
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WIPO (PCT)
Prior art keywords
local
local routing
user terminal
bearer
module
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PCT/CN2009/071671
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English (en)
French (fr)
Inventor
卢磊
顾亮
张伟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/071671 priority Critical patent/WO2010127490A1/zh
Priority to CN2009801150658A priority patent/CN102282807B/zh
Publication of WO2010127490A1 publication Critical patent/WO2010127490A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/08—Mobility data transfer
    • H04W8/082—Mobility data transfer for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents

Definitions

  • the present invention relates to the field of network communication technologies, and in particular, to a technology for implementing local routing in a network communication process.
  • PS Packet Domain
  • VoIP voice over IP
  • services for performing PS services are also provided in communication systems such as WiMAX networks.
  • the telephone service of the VoIP service belongs to the local service, that is, only a small part of the VoIP service will leave the local call interval to implement the call.
  • the communication network there are some other service flows with similar application situations, and some of the corresponding service flows only need to be exchanged in the local interval.
  • a service flow in which a part such as a VoIP service only needs to be exchanged in a local area to communicate it still needs to be transmitted via the backhaul network and the core network.
  • Embodiments of the present invention provide a method, apparatus, and system for implementing local routing, so that part of data can be exchanged and transmitted to a destination end only in a local interval in a communication network, thereby saving transmission resources.
  • a method for implementing local routing including:
  • the local user terminal and the peer user terminal After determining that the local user terminal and the peer user terminal meet the local routing condition according to the location information of the local user terminal that initiates the communication and the location information of the peer user terminal that is the communication peer end, the local user terminal and the peer user are associated with each other.
  • the bearer that supports the local route established by the terminal separately to obtain the local route bearer;
  • Local routing is implemented between the local user terminal and the peer user terminal by using the local routing bearer.
  • a system for implementing local routing including:
  • a location information management module configured to manage location information of the user terminal in the communication network
  • a local routing control module configured to be used by the local end user to initiate communication according to the location information management module
  • the location information of the terminal and the location information of the peer user terminal as the communication peer end determine whether the local user terminal and the peer user terminal meet the local routing condition
  • the local routing bearer establishing module is configured to: after the local routing control module determines that the local user terminal and the peer user terminal meet the local routing condition, respectively, the local support established between the local user terminal and the peer user terminal is locally supported. The bearer of the route to obtain the local route bearer;
  • the local routing execution module is configured to implement local routing between the local user terminal and the peer user terminal by using the local routing bearer obtained by the local routing bearer establishing module.
  • a device for implementing local routing including:
  • the local routing bearer establishing module is configured to: after receiving the local routing indication, associate the local routing bearer established between the local user terminal and the opposite user terminal to obtain a local routing bearer;
  • the local routing execution module is configured to implement local routing between the local user terminal and the peer user terminal by using the local routing bearer obtained by the local routing bearer establishing module.
  • a local routing control device includes:
  • the local routing control module is configured to determine, according to the location information of the local user terminal that initiates the communication, and the location information of the peer user terminal that is the communication peer end, whether the local routing condition is met between the local user terminal and the peer user terminal;
  • the local route indication sending module is configured to: after the local routing control module determines that the local user terminal and the peer user terminal meet the local routing condition, send a local routing indication, where the local routing indication is used to indicate that the local routing indication needs to be at the local end A local routing bearer is established by association between the user terminal and the peer user terminal.
  • a local routing bearer can be established between user terminals that meet the local routing conditions in the communication network, and the local routing is performed by means of local routing.
  • the information transmission between the user terminals, so that the corresponding data can occupy less network transmission resources during the transmission process, and can reduce the corresponding transmission delay and improve the data transmission efficiency.
  • 1 is a schematic diagram of a service flow transmission path in the prior art
  • 2A is a schematic structural diagram of a system according to an embodiment of the present invention
  • 2B is a schematic structural diagram of an apparatus for implementing local routing according to an embodiment of the present invention.
  • 2C is a schematic structural diagram of a local routing control apparatus according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a processing procedure according to Embodiment 1 of the present invention.
  • Embodiment 4 is a schematic diagram of a processing procedure of Embodiment 2 according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a processing procedure of Embodiment 3 according to an embodiment of the present invention.
  • the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of them. An embodiment. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • the local user terminal and the peer user terminal are determined to be in the local state according to the location information of the local user terminal that initiates the communication and the location of the peer user terminal that is the communication peer end.
  • the corresponding local bearer (or service flow) can be associated to obtain the corresponding local routing bearer through the corresponding association process, that is, the local routing operation is activated, and then the corresponding local user terminal and the peer user can be obtained.
  • the local route is used between the terminals to implement local routing for data transfer.
  • the association process of the corresponding bearer may be performed in the process of establishing a bearer between the local user terminal and/or the peer user terminal respectively, or after the corresponding bearer is established respectively with the local user terminal and the opposite user terminal. carried out.
  • the local user terminal and the opposite user terminal are allowed to establish a bearer supporting the local routing operation according to the predetermined local routing control policy, and only when the permission is determined, is performed at the local end.
  • the associated operation of the bearer between the user terminal and the peer user terminal That is, the bearer of the local user terminal and the peer user terminal is established respectively when the local user terminal and the peer user terminal are allowed to perform local routing according to the predetermined local routing control policy, and the local user terminal and the opposite user terminal are respectively established. If the local routing conditions are met, the bearers established by the corresponding local user terminal and the opposite user terminal are associated with each other to activate the corresponding local routing operation.
  • the corresponding local routing control policy may include, but is not limited to, including: at least one of user-based local routing control information, bearer-based local routing control information, or location-based local routing control information; optionally, may also include local
  • the corresponding local routing mode includes a centralized control method for local routing decision control by the same entity and a distributed control method for local routing decisions by multiple entities.
  • the process of determining that the local user terminal and the peer user terminal meet the local routing condition may specifically determine the corresponding local user terminal and the opposite user terminal according to the location information of the local user terminal and the opposite user terminal. If there is a coincidence point between the data paths, if there is a coincidence point, it is determined that the corresponding local user terminal and the opposite user terminal meet the local routing condition, that is, the corresponding bearer can be associated with the local routing operation.
  • the bearers of the user terminals at both ends of the communication can be separately established, and the corresponding local routing bearers are made through the corresponding association operations, so as to implement the corresponding end-to-end service transmission by using the corresponding local routing bearers.
  • Local routing effectively saves transmission resources in the communication network and shortens the path of service transmission, thereby improving the performance of service transmission.
  • the service corresponding to the bearer automatically implements corresponding local routing processing in the subsequent transmission process, and does not need to detect the data on a certain bearer in real time to determine whether to execute the corresponding local route.
  • the local routing bearer obtained by the association in the embodiment of the present invention may be used only for sending the service data of the local user terminal to the peer user terminal.
  • the embodiment of the present invention further provides a system for implementing local routing, and the implementation structure thereof is as shown in FIG. 2A, and specifically includes the following modules:
  • the location information management module 201 is configured to manage location information of the user terminal in the communication network.
  • the local routing control module 202 is configured to determine the local user terminal and the peer user terminal according to the location information of the local user terminal that initiates the communication and the location information of the peer user terminal that is the communication peer end managed by the location information management module 201. Whether the local routing condition is met, that is, whether the objective condition between the local user terminal and the opposite user terminal can determine the local route of the corresponding service transmission;
  • the local routing bearer establishing module 203 is configured to establish, after the local routing control policy management module 205 determines that the local user terminal and the peer user terminal meet the local routing condition, establish an association between the local user terminal and the peer user terminal respectively.
  • the local routing bearer is configured to obtain a local routing bearer for implementing the local routing; that is, the local routing bearer establishing module may be specifically configured to: after determining that the local user terminal and the peer user terminal meet the local routing condition, the local user terminal is configured.
  • the local routing bearer is configured to control the local bearer by using the bearer control module, and the corresponding attribute can be supported by the local routing bearer. Local routing, etc.
  • the local routing execution module 204 is configured to use the local routing bearer established by the local routing bearer establishing module 203 (that is, the local routing bearer obtained by the bearer supporting the local routing), between the corresponding local user terminal and the peer user terminal.
  • the system may further include:
  • the local routing control policy management module 205 is configured to manage a local routing control policy that is pre-configured (such as configured according to the user's subscription information, etc.); and the local routing control module 202 further determines the local user according to the local routing control policy. Whether the terminal and the peer user terminal are allowed to establish a bearer supporting the local route;
  • the bearer establishing module 206 is configured to enable the bearer of the local route established between the local user terminal and the peer user terminal when the local routing control policy management module 205 determines the need, so that the local routing bearer establishing module 203 can be The local routing bearer of the local user terminal and the peer user terminal is established in the case that the local routing control policy is allowed to be established according to the corresponding local routing control policy.
  • each module may be set in the same physical device, or may be set in different physical devices, or some modules may be set in the same physical device, other modules may be arbitrarily set, and the like.
  • the corresponding location information management module 201, the local routing control policy management module 205, and the local routing control module 202 are disposed in the first device
  • the corresponding local routing bearer establishing module 203 and the local routing executing module 204 are disposed in the second device.
  • the corresponding second device may include at least one.
  • the system provided by the embodiment of the present invention may be specifically applied to a WiMAX (Worldwide Interoperability for Microwave Access) network.
  • the physical device in the WiMAX network may include: an access service network gateway ASN GW, a base station BS, a relay station RS, and an authentication.
  • the first physical device may include: an ASN GW or an authenticator gateway
  • the second physical device may include: an ASN GW, a BS, or an RS.
  • the corresponding location information management module 201 can be set in the ASN GW, and the corresponding local routing control policy management module 205 and the local routing control module 202 can be set in the authenticator gateway, and the corresponding local routing bearer establishing module 203 and local
  • the routing execution module 204 can then be placed in the anchor ASN GW, the serving ASN GW, the BS, and/or the RS.
  • the embodiment of the present invention further provides an apparatus for implementing local routing.
  • the specific implementation structure is as shown in FIG. 2B, and may include the following modules:
  • the local routing bearer establishing module 203 is configured to: after receiving the local routing policy indication, establish a bearer supporting the local route between the local user terminal and/or the opposite user terminal, and then associate the corresponding bearer supporting the local route to obtain the local Route bearer
  • the local routing execution module 204 is configured to implement local routing between the local user terminal and the opposite user terminal by using the local routing bearer obtained by the local routing bearer establishing module 203.
  • the local routing bearer establishing module may be specifically configured to: after determining that the local user terminal and the peer user terminal meet the local routing condition, associate the bearer of the local route established by the local user terminal and the opposite user terminal respectively. The local routing bearer is obtained.
  • the local routing bearer establishing module can also control the attributes of the established bearer by using the bearer control module, and the corresponding attribute can be whether to support local routing or the like.
  • the embodiment of the present invention further provides a local routing control device, and the implementation structure thereof is as shown in FIG. 2C, and specifically includes the following modules:
  • the local routing control module 202 is configured to determine, according to the location information of the local user terminal that initiates the communication, and the location information of the peer user terminal that is the communication peer end, whether the local routing condition is met between the local user terminal and the peer user terminal;
  • the local routing indication sending module 207 is configured to: after the local routing control module 202 determines that the local user terminal and the peer user terminal meet the local routing condition, send a local routing indication, and indicate that the local routing instruction needs to be in the local
  • the bearer of the local route is associated between the end user terminal and the peer user terminal, so that the corresponding local route bearer establishing module 203 associates the bearer corresponding to the local route.
  • the device may further include a location information management module 201, configured to manage location information of the user terminal in the communication network, to provide location information of the user terminal for the corresponding local routing control module 202.
  • a location information management module 201 configured to manage location information of the user terminal in the communication network, to provide location information of the user terminal for the corresponding local routing control module 202.
  • the device may further include a local routing control policy management module 205, configured to manage a local routing control policy that is pre-configured (eg, configured according to subscription information of the user, etc.); and the corresponding local routing control module 202 is further configured according to the corresponding The local routing control policy determines whether a local routing bearer needs to be established between the local user terminal and the peer user terminal.
  • a local routing control policy management module 205 configured to manage a local routing control policy that is pre-configured (eg, configured according to subscription information of the user, etc.); and the corresponding local routing control module 202 is further configured according to the corresponding The local routing control policy determines whether a local routing bearer needs to be established between the local user terminal and the peer user terminal.
  • a local routing bearer for realizing local routing can be established between the local user terminal and the peer user terminal that need to communicate in the communication network, so that the subsequent service transmission process can be based on
  • the local route carries a local route that implements service transmission, that is, a local route that can implement end-to-end service transmission based on the local route bearer, effectively saves transmission resources in the communication network, saves network operation cost, and can improve service transmission performance.
  • the corresponding process of implementing local routing may include:
  • Step 1 The MS (mobile station) initiates a network access process, in which the address learning and management module (ie, the location information management module) learns and maintains the IP or MAC (Media Access Control) address of the MS. And record
  • the location of the MS may include: a BSID (Base Station Identity), a Serving GW ID (Service Gateway Identity), and an Anchor GW ID (Gateway Identity).
  • Step 2 When the MS needs to communicate with the communication peer, after the application layer signaling is established, the network side triggers the establishment of the service flow (or bearer).
  • the local routing control policy management module sends a local routing policy to the service flow control module according to the maintained local routing control policy to indicate the local routing control policy adopted by the current service flow; that is, the service flow control module is instructed to control the corresponding local routing service.
  • the flow setup module initiates an operation to establish a service flow that supports local routing.
  • the corresponding local routing control policy can be one or more of a local routing pattern (such as centralized or distributed), or a granularity of local routing (such as location, user or traffic flow, etc.).
  • a local routing pattern such as centralized or distributed
  • a granularity of local routing such as location, user or traffic flow, etc.
  • Step 3 The service flow control module determines, according to the received local routing policy, the profile (parameter) of the MS, and the corresponding service flow attribute, whether to perform local routing for the service, and if the service authorization is an executable local route,
  • the MS communication peer IP address or the MAC address is parsed, and the service flow establishment notification is sent to the local routing control module, and the corresponding service flow establishment notification may include the current MSID (MS identifier), the IP address or MAC address of the communication peer end.
  • the profile of the corresponding MS may include a local routing mode, a local routing granularity, and the like, and the corresponding service flow attributes may include a communication peer IP/MAC, a service QoS, and the like.
  • the service flow control module is notified, and when the service flow is established, the local routing attribute of the P2P (point-to-point) needs to be assigned to the specific user or the service, that is, the local routing service of the P2P needs to be established. Flow, at this time, a notification to establish a local routing service flow needs to be sent to the local routing control module, so that the local routing control module determines whether local routing can be performed.
  • Step 4 After receiving the service flow establishment notification, the local routing control module sends a location query request to the address learning and management module, and queries the communication peer location MS;
  • the IP address or MAC address of the peer can also query the location of the local MS. You can also query the MS ID (MS ID) of the local MS.
  • Step 5 The address learning and management module returns the location of the communication peer MS and the local MS to the local routing control module according to the IP address or MAC address of the communication MS and the MS ID of the local MS.
  • the location report may be The location information of the communication peer MS and the local MS is returned to the local routing control module;
  • the corresponding location information may include a BS ID (Base Station Identity), an RS ID (Relay Station Identity), and a GW ID (Gateway Identity) where the data path of the local MS and the communication peer MS are located; or, the corresponding location information may be Contains CID (connection ID) and data path ID (data path ID).
  • BS ID Base Station Identity
  • RS ID Relay Station Identity
  • GW ID Gateway Identity
  • Step 6 The local routing control module determines, according to the location information of the local MS and the communication peer MS, the first coincidence point of the data path between the local MS and the communication peer MS from the access point, to determine the local MS and Communication peer MS Whether the data transfer between the two meets the local routing conditions.
  • the local routing condition is not met, that is, the service flow control module is notified that the association operation of the local routing service flow is not initiated, and the service supporting the local routing is established. flow.
  • the service flow that supports the local route does not need to be re-initiated when the local MS enters the area where the local routing operation can be performed.
  • the service flow that supports the local route can be directly associated with the peer MS to establish a local routing service flow between the local MS and the remote MS.
  • step 7 is performed;
  • Step 7 After determining that there is a coincidence point between the data path of the local MS and the communication peer MS, sending an indication message for establishing a service flow to the service flow control module, where the corresponding indication message may be accompanied by a service flow association indication, and The first coincidence point of the data path of the local MS and the communication peer MS, so that the established service flow can be associated at the corresponding execution point.
  • Step 8 After receiving the indication message of establishing the local routing service flow, the service flow control module sends a service flow indication message to the local routing service flow establishing module, to indicate that the local routing service flow establishing module configures the established local MS service.
  • the flow is associated with the service flow of the peer MS, and then the corresponding local routing service flow is obtained;
  • the associated operation of the local routing service flow is performed by the local routing service flow establishing module of the local MS and the communication peer MS, and then notified to the executing entity of the first coincidence point;
  • the local routing service flow association is performed at the first coincidence point of the data path from the local MS and the communication peer MS.
  • Step 9 The local routing service flow establishing module, after receiving the corresponding service flow indication message, establishes a corresponding local routing service flow, that is, the service flow associated with the peer MS according to the indication, so as to implement local routing through the local routing execution module;
  • the local routing service flow establishing module and the local route executing module that complete the corresponding functions in the step 9 can be specifically set in the first coincidence point determined in the step 6.
  • Step 10 Complete the establishment of the air interface service flow with the local MS.
  • Step 11 If the application layer triggers the communication peer MS to establish a corresponding service flow supporting the local route, refer to the foregoing steps, establish a corresponding uplink and downlink service flow supporting the local route, and associate the service flow at a specific execution point, To implement local routing service flow;
  • the foregoing step 9 after the local routing service flow establishing module receives the service flow indication message, if the communication peer has established a service flow supporting the local route, the foregoing step 9 may directly Ben After the service flow supporting the local route between the end MS and the peer MS is associated, the corresponding local routing service flow is established; in the foregoing step 9, after the local routing service flow establishing module receives the service flow indication message, if the communication pair The end MS does not establish a service flow that supports the local route, and the step 11 is performed to trigger the peer MS to establish a service flow that supports the local route, and then establish a local route service flow between the local MS and the peer MS.
  • Step 12 The local MS sends the uplink data to the local routing service flow execution module (that is, the local route execution module), and the module directly sends the data to the downlink service flow associated with the communication peer to implement local routing.
  • the local routing service flow execution module that is, the local route execution module
  • the local routing control, the local routing service flow establishment, and the local routing control execution module may be located in the same physical entity.
  • the local routing control, the local routing service flow establishment, and the local routing control execution module may be Located inside different physical entities.
  • the implementation process of the embodiment of the present invention is specifically described by taking a corresponding local routing operation in a WiMAX (Worldwide Interoperabiation for Microwave Access) network as an example.
  • WiMAX Worldwide Interoperabiation for Microwave Access
  • the implementation process of the local routing service triggered by the corresponding AF may include: Step 1: The local MS initiates a network access process, where the address learning and management module is located in the ASN-GW. (Access service network gateway) interacts, learns and maintains the IP address or MAC address of the MS, and records the location of the MS.
  • the location of the MS may specifically include: BS ID (Base Station Identity), Serving GW ID (Service Gateway ID), and Anchor GW ID. (anchor gateway ID).
  • Step 2 After receiving the message sent by the AF to establish an application, the local MS can send the message to the BS (base station).
  • a DSA-REQ (Dynamic Service Addition) message can be relayed to the BS via an RS (Relay Station).
  • Step 3 After receiving the corresponding message, the BS sends a DSx_RVD (Dynamic Service Operation Accept Request) message to the local MS, and responds to the DSA-REQ message sent by the BS, and simultaneously sends a Path_Reg_Req (Data Channel Registration Request) message to the Serving GW ( Service Gateway) to request the establishment of the corresponding service flow and data channel.
  • DSx_RVD Dynamic Service Operation Accept Request
  • Path_Reg_Req Data Channel Registration Request
  • Step 4 After receiving the message, the Serving ASN-GW sends a Path_Reg_Req (Data Channel Registration Request) message to the Anchor ASN-GW (anchor ASN-GW) to request to establish a corresponding service flow and data channel.
  • Path_Reg_Req Data Channel Registration Request
  • Step 5 After receiving the message, the Anchor ASN-GW sends an RR_Req (Resource Reservation) message to the Anchor SFA (an anchor service flow authorization entity) located in the Authenticator ASN-GW (Authentilator ASN-GW). , request to establish the corresponding business flow.
  • Step 6 The Authenticator ASN-GW determines whether the service flow supports the local route according to the local routing control policy. If the local route is supported, the MS_address_information_req (location information query request) message is sent to the address learning and management module, and the communication peer MS is queried. The location, such as the IP address or MAC address of the communication peer MS, optionally, the location of the local MS, such as the MS ID (MS identity) corresponding to the local MS.
  • Step 7 The address learning and management module returns the location of the communication peer MS and the local MS according to the IP address or MAC address of the communication peer MS and the MS ID of the local MS, that is, sends the communication peer to the local routing control module.
  • the MS_address_information_rpt (Location Information Query Report) of the location information of the MS and the local MS, and the corresponding location information includes the BS ID, the RS ID, and the GW ID of the data path of the local MS and the communication peer MS, or the corresponding location information. Includes CID and data path ID.
  • Step 8 The local routing control module determines, according to the location information of the local MS and the communication peer MS, the first coincidence point of the data path between the local MS and the communication peer MS from the access point, to determine the local MS and Whether the communication peers meet the local routing conditions between the MSs.
  • the service flow control module is notified that the local routing service flow module does not initiate local routing association, and can establish a local routing support.
  • the service flow (for example, the attribute information of the established service flow can be recorded as supporting the local route, so that after the local MS switches to the location that can support the local route in the subsequent processing, the attribute information can be directly applied according to the recorded attribute information.
  • the service flow that supports the local route implements the local route.
  • the notification sent to the service flow control module may further include a local route identifier, which is used to indicate that the service flow supporting the local route can be established; if the local MS and the communication peer end If the data path of the MS is coincident, it is determined that the related service flow of the communication peer MS can be associated, that is, the corresponding local routing service flow can be established, and step 9 is performed.
  • a local route identifier which is used to indicate that the service flow supporting the local route can be established
  • Step 9 The Anchor SFA of the Authenticator ASN-GW sends an RR_Rsp (Resource Reservation) message to the Anchor ASN-GW according to the result determined by the local route to establish a corresponding local routing service flow.
  • RR_Rsp Resource Reservation
  • the corresponding RR_Rsp message may further include: a local route identifier, which is used to indicate that the service flow supports a local route; an association indication, which is required to be associated with the communication peer MS service flow; and an execution point, used to indicate the service flow association Execution function entity.
  • Step 10 After receiving the RR_Rsp message, the Anchor ASN-GW sends a Path_Reg_Rsp (Data Channel Registration Response) message to the Serving ASN-GW to establish a corresponding local routing service flow and a data channel.
  • the Path_Reg_Rsp message may be Contains local route IDs, association indications, and enforcement points.
  • Step 11 After the Serving ASN-GW receives the Path_Reg_Rsp message, it sends Path_Reg_Rsp (data pass).
  • the channel registration response message is sent to the BS to establish a corresponding local routing service flow and data channel.
  • the local route identifier, the association indication, and the execution point may be included in the Path_Reg_Rsp message.
  • Step 12 After receiving the Path_Reg_Rsp message, the BS sends a DSA_RSP (Dynamic Service Add Response) message, and the corresponding DSA_RSP is transmitted to the MS through the RS to establish a corresponding service flow.
  • DSA_RSP Dynamic Service Add Response
  • the local route identifier, association indication, and execution point may be included in the DSA_Rsp message.
  • the enforcement point BS associates the local MS with the service flow of the communication peer MS to implement a local routing operation. Specifically, the corresponding association may be the local MS and the communication.
  • the service flow of the peer MS is configured as an end-to-end channel to perform local routing operations through the end-to-end channel. If the service flow of the communication peer MS is not established, the subsequent step 16 is performed to establish a service flow of the communication peer MS.
  • Step 13 after receiving the DSA_RSP message, the MS returns a DSA_ACK (Dynamic Service Addition Confirmation) message to the BS.
  • DSA_ACK Dynamic Service Addition Confirmation
  • Step 14 After receiving the DSA_ACK message, the BS sends a Path_Reg_A C k (Data Channel Registration Response) message to the Serving ASN-GW, and then sends a Path_Reg_Ack message to the Anchor ASN_GW.
  • a Path_Reg_A C k Data Channel Registration Response
  • Step 15 After receiving the Path_Reg_Ack message, the Anchor ASN-GW sends an RR_Ack message to the Path_Reg_Ack message.
  • Step 16 the Authenticator ASN-GW/Anchor SFA initiates the establishment of the service flow to the communication peer MS, and the corresponding service flow establishment process is the same as the above steps 2-15;
  • the communication peer MS may perform the corresponding step 2 by performing message interaction with the AF, and then perform subsequent steps to establish a service flow of the communication peer MS, and in the process of establishing the service flow,
  • the MS is associated with the uplink and downlink traffic of the communication peer MS to implement local routing operations.
  • step 16 is not limited to after the step 15, which may be specifically performed at the communication peer MS and the ground AF and determined to be executed at any time after the communication peer MS needs to perform the corresponding step 2.
  • step 2 in turn, performs the subsequent steps.
  • Step 17 The local MS uplink data is sent to the downlink service flow of the transit peer directly through the uplink traffic flow on the local routing service flow execution entity, so as to implement the local routing service flow between the local MS and the communication peer MS. Local route for data transfer.
  • the implementation process of the local routing service triggered by the PCC Policy Accounting Control
  • PCC Policy Accounting Control
  • PCEF Policy and Accounting Execution Function
  • Step 1 The local MS initiates a network access process.
  • the address learning interacts with the ASN-GW where the management is located, learns and maintains the IP address or MAC address of the MS, and records the location of the MS.
  • the location of the corresponding MS may include the BSID. , Serving GW ID and Anchor GW ID.
  • Step 2 When the local MS has a service requirement, the AF (Application Function) sends an AAR (Application-Auth-R equest) message to the PCRF (Policy and Charging Rules Function) to trigger the corresponding service flow.
  • AAR Application-Auth-R equest
  • PCRF Policy and Charging Rules Function
  • Step 3 After receiving the corresponding AAR message, the PCRF sends a RAR (Re_Auth_Request, Re-Authentication Request) message to the PCEF located in the Authenticator ASN-GW, where the RAR message carries the local route notification and the profile of the local route.
  • the parameters of the corresponding local route may include the mode, granularity, etc. of the local route.
  • Step 4 The Authenticator ASN-GW determines whether the service flow supports local routing according to the local routing control policy. If local routing is supported, the MS_address_information_req (location information query request) message is sent to the address learning and management module to query the communication peer MS.
  • the location of the corresponding communication peer MS may include the IP address/MAC address of the communication peer MS.
  • the location of the local MS such as the MS ID of the local MS, may also be queried.
  • Step 5 The address learning and management module returns the location information (or path information) of the communication peer MS and the local MS according to the IP address or MAC address of the communication peer MS and the MS ID of the local MS, that is, the transmission includes the communication pair. end
  • the MS_address_information_rpt (location information query report) of the location information of the MS and the local MS is sent to the local routing control module, and the location information of the corresponding communication peer MS and the local MS may specifically include the data path of the local MS and the communication peer MS.
  • the BS ID, the RS ID, and the GW ID, or the corresponding communication peer MS and the local MS location information may also include a CID and a data path ID.
  • Step 6 The local routing control module determines, according to the received location information of the local MS and the communication peer MS, the first coincidence point of the data path between the local MS and the communication peer MS from the access point, to determine the present Whether the local MS and the communication peer MS meet the local routing conditions;
  • the service flow control module is notified that the local route association is not initiated, and the service flow supporting the local route is established, and the local route may also be included.
  • An identifier configured to indicate that the service flow supports local routing; If it is determined that there is a coincidence point between the local MS and the data path of the communication peer MS, it is determined that the local routing condition is met, and the related service flow of the communication peer MS is associated, and step 7 is performed.
  • Step 7 After determining that the local routing condition is met, the PCEF located in the Authenticator ASN-GW sends an RR_Req message to the Anchor ASN-GW to establish a corresponding local routing service flow, and the RR_Req message may further include: a local routing identifier, Instructing the service flow to support the local route; the association indication indicating the association with the communication peer service flow; and the execution point, the execution function entity for indicating the service flow association.
  • Step 8 After receiving the RR_Req message, the Anchor ASN-GW sends a Path_Reg_Req message to the Serving ASN-GW to establish a corresponding local routing service flow and a data channel.
  • the Path_Reg_Req message may include a local route identifier and association. Point and execute points.
  • Step 9 after the Serving ASN-GW receives the Path_Reg_Req message, according to the association indication and execution point, Serving
  • the GW associates the local MS with the service flow of the communication peer MS to implement local routing operations.
  • Step 10 After receiving the Path_Reg_Req message, the BS sends a DSA_REQ message, and the message is sent to the local MS through the RS to establish a corresponding service flow.
  • Step 11 After receiving the DSA_REQ message, the local MS returns the DSA_RSP message. Similarly, the corresponding message is relayed to the BS through the RS.
  • Step 12 After receiving the DSA_RSP message, the BS sends a Path_Reg_Rsp message to the Serving ASN-GW to establish a corresponding service flow and data channel.
  • Step 13 after receiving the Path_Reg_Rsp message, the Serving ASN-GW continues to send a Path_Reg_Rsp message to the Anchor ASN-GW to establish a corresponding service flow and data channel.
  • Step 14 After receiving the Path_Reg_Rsp message, the Anchor ASN-GW sends an RR_Rsp message to the Anchor SFA located in the Authenticator ASN-GW to establish a corresponding service flow.
  • Step 15 After determining that the service flow with the local MS is established, the PCEF sends a RAA (Re-Auth- Answer) message to the PCRF located in the CSN (Core Network) as a response.
  • RAA Re-Auth- Answer
  • Step 16 When the local MS has a service requirement, the PCRF sends an AAA (Application-Auth-Answer) message to the AF as a response.
  • AAA Application-Auth-Answer
  • Step 17 the Authenticator ASN-GW/PCEF initiates the establishment of the service flow to the communication peer MS, and the process of establishing the corresponding service flow is similar to the process described in the foregoing steps 7-16, and the description is not repeated here;
  • Step 18 The local MS uplink data is sent to the downlink service flow of the transit peer directly through the uplink service flow, and the local route is implemented by the corresponding service flow supporting the local route.
  • the local routing between the local MS and the communication peer MS can be implemented in the foregoing embodiment of the present invention to save the bandwidth of the backhaul network, reduce the cost of the operator, and save the transmission.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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Description

实现本地路由的方法、 装置及系统
技术领域 本发明涉及网络通信技术领域， 尤其涉及一种网络通信过程中实现本地路由的技 术。 发明背景 随着无线通信技术的发展， VoIP (基于 IP的语音）业务等 PS (分组域）业务的应用 日益广泛。 为此， 在 WiMAX网络等通信系统中也提供了开展 VoIP业务等 PS业务的服务。 从业务模型来看， VoIP业务的电话业务属于本地业务， 即仅有小部分 VoIP业务会离开本 地通话区间实现通话。 同样， 在通信网络中， 还存在一些其他具有类似应用情况的业务 流， 相应业务流中的一部分仅需要在本地区间便可以实现交换。 但是， 如图 1所示， 目 前， 对于 VoIP业务等部分仅需要在本地区间进行交换便可以实现通信的业务流来说， 其 仍需要经由回程网络和核心网进行传输。
在实现本发明过程中， 发明人发现现有技术中至少存在如下问题：
对于仅在本地区间便可以实现交换的业务流，若将其传输过程都经由回程网络和核 心网络， 则将大大增加对回程网络和核心网络带宽的需求， 并导致较大的传输延时。 发明内容 本发明的实施例提供了一种实现本地路由的方法、装置及系统， 以使得在通信网络 中可以将部分数据仅在本地区间进行交换传输到目的端， 从而节省传输资源。
一种实现本地路由的方法， 包括：
在根据发起通信的本端用户终端的位置信息及作为通信对端的对端用户终端的位置 信息， 确定本端用户终端和对端用户终端符合本地路由条件后， 关联本端用户终端和对 端用户终端分别建立的支持本地路由的承载， 以获得本地路由承载；
通过所述本地路由承载， 在所述本端用户终端和对端用户终端之间实现本地路由。 一种实现本地路由的系统， 包括：
位置信息管理模块， 用于管理通信网络中的用户终端的位置信息；
本地路由控制模块， 用于根据所述位置信息管理模块管理的发起通信的本端用户终 端的位置信息及作为通信对端的对端用户终端的位置信息，确定本端用户终端和对端用 户终端之间是否符合本地路由条件；
本地路由承载建立模块， 用于在所述本地路由控制模块确定本端用户终端和对端用 户终端之间符合本地路由条件后，关联本端用户终端和对端用户终端之间分别建立的支 持本地路由的承载， 以获得本地路由承载；
本地路由执行模块， 用于通过所述本地路由承载建立模块获得的本地路由承载， 在 所述本端用户终端和对端用户终端之间实现本地路由。
一种实现本地路由的装置， 包括：
本地路由承载建立模块， 用于在接收本地路由指示后， 关联本端用户终端和对端用 户终端之间分别建立的支持本地路由的承载， 以获得本地路由承载；
本地路由执行模块， 用于通过所述本地路由承载建立模块获得的本地路由承载， 在 所述本端用户终端和对端用户终端之间实现本地路由。
一种本地路由控制装置， 包括：
本地路由控制模块， 用于根据发起通信的本端用户终端的位置信息及作为通信对端 的对端用户终端的位置信息，确定本端用户终端和对端用户终端之间是否符合本地路由 条件；
本地路由指示发送模块， 用于在所述本地路由控制模块确定本端用户终端和对端用 户终端之间符合本地路由条件后， 发送本地路由指示， 所述本地路由指示用于指示需要 在本端用户终端和对端用户终端之间关联建立本地路由承载。
由上述本发明的实施例提供的技术方案可以看出，通过本发明实施例可以在通信网 络中， 将符合本地路由条件的用户终端之间建立本地路由承载， 以通过本地路由的方式 进行通信的用户终端之间的信息传输，从而使得相应的数据在传输过程中可以较少地占 用网络传输资源， 并可以降低相应的传输时延， 提高数据传输效率。 附图简要说明 为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的 附图作简单地介绍， 显而易见地， 下面描述中的附图仅仅是本发明的一些实施例， 对于 本领域普通技术人员来讲， 在不付出创造性劳动性的前提下， 还可以根据这些附图获得 其他的附图。
图 1为现有技术中的业务流传输路径示意图； 图 2A为本发明实施例提供的系统的结构示意图；
图 2B为本发明实施例提供的实现本地路由的装置的结构示意图；
图 2C为本发明实施例提供的本地路由控制装置的结构示意图；
图 3为本发明实施例提供的实施例一的处理过程示意图；
图 4为本发明实施例提供的实施例二的处理过程示意图；
图 5为本发明实施例提供的实施例三的处理过程示意图。 实施本发明的方式 下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行清楚、 完整 地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而不是全部的实施例。 基 于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有 其他实施例， 都属于本发明保护的范围。
本发明实施例提供的实现本地路由的方案中， 可以在根据发起通信的本端用户终端 的位置信息及作为通信对端的对端用户终端的位置，确定本端用户终端和对端用户终端 符合本地路由条件后， 便可以通过关联对应的承载 （或称业务流）， 以通过相应的关联 过程获得相应的本地路由承载， 即激活本地路由操作， 进而可以在相应的本端用户终端 和对端用户终端之间利用该本地路由承载实现数据传递的本地路由。 其中， 相应的承载 的关联过程， 可以在本端用户终端和 /或对端用户终端分别建立承载的过程中执行， 也 可以在与本端用户终端和对端用户终端分别建立了相应的承载之后执行。
进一步地， 在上述处理过程中还可以根据预定的本地路由控制策略确定是否允许为 本端用户终端和对端用户终端建立支持本地路由操作的承载， 并仅在确定允许时， 才执 行在本端用户终端和对端用户终端之间的承载的关联操作。即根据预定的本地路由控制 策略确定允许建立本端用户终端和对端用户终端执行本地路由时，才分别建立本端用户 终端和对端用户终端的承载，在本端用户终端和对端用户终端符合本地路由条件的情况 下，将相应的本端用户终端和对端用户终端各自建立的承载相互关联以激活相应的本地 路由操作。
相应的本地路由控制策略具体可以但不限于包括： 基于用户的本地路由控制信息、 基于承载的本地路由控制信息或基于位置的本地路由控制信息中的至少一项； 可选地， 还可以包括本地路由模式，相应的本地路由模式包括由同一实体进行本地路由决策控制 的集中式控制方式和由多个实体分别进行本地路由决策的分布式控制方式。 本发明实施例中， 确定本端用户终端和对端用户终端符合本地路由条件的过程具体 可以根据本端用户终端和对端用户终端的位置信息确定相应的本端用户终端和对端用 户终端的数据路径之间是否存在重合点， 若存在重合点， 则确定相应的本端用户终端和 对端用户终端符合本地路由条件， 即可以关联相应的承载， 激活本地路由操作。
通过上述实现方案， 便可以分别建立通信的两端用户终端的承载， 并通过相应的关 联操作使其成为相应的本地路由承载， 以便于利用相应的本地路由承载对相应的端到端 业务传输实现本地路由，有效节省通信网络中的传输资源，并可以缩短业务传输的路径， 进而提高业务传输的性能。 而且， 在激活了本地路由业务操作， 该承载对应的业务在后 续传输过程中自动实现相应的本地路由处理，而无需再实时检测某承载上的数据来确定 是否执行相应的本地路由。
本发明实施例关联获得的本地路由承载具体可以仅用于发送本端用户终端到对端用 户终端的业务数据。 本发明实施例还提供了一种实现本地路由的系统，其实现结构如图 2A所示，具体可 以包括以下模块：
位置信息管理模块 201， 用于管理通信网络中的用户终端的位置信息；
本地路由控制模块 202， 用于根据上述位置信息管理模块 201管理的发起通信的本 端用户终端的位置信息及作为通信对端的对端用户终端的位置信息，确定本端用户终端 和对端用户终端之间是否符合本地路由条件， 即确定本端用户终端和对端用户终端之间 的客观条件是否能够进行相应的业务传输的本地路由；
本地路由承载建立模块 203， 用于在本地路由控制策略管理模块 205确定本端用户 终端和对端用户终端之间符合本地路由条件后，在本端用户终端和对端用户终端之间关 联分别建立的支持本地路由的承载获得用于实现本地路由的本地路由承载； 即该本地路 由承载建立模块具体可以用于在确定本端用户终端和对端用户终端符合本地路由条件 后， 将本端用户终端和对端用户终端分别建立的支持本地路由的承载进行关联， 获得本 地路由承载； 进一步地， 该本地路由承载建立模块还可以通过承载控制模块控制建立的 承载的属性， 相应的属性可以为是否支持本地路由等；
本地路由执行模块 204， 用于通过上述本地路由承载建立模块 203建立的本地路由 承载 （即关联支持本地路由的承载获得的本地路由承载）， 在相应的本端用户终端和对 端用户终端之间实现业务传输的本地路由。
可选地， 在该系统中还可以包括： 本地路由控制策略管理模块 205， 用于管理记录预先配置 （如根据用户的签约信息 等配置） 的本地路由控制策略； 且上述本地路由控制模块 202还根据该本地路由控制策 略确定所述本端用户终端和对端用户终端是否允许建立支持本地路由的承载；
承载建立模块 206， 用于在本地路由控制策略管理模块 205确定需要时， 在本端用 户终端和对端用户终端之间分别建立的支持本地路由的承载， 以使得本地路由承载建立 模块 203可以在根据相应的本地路由控制策略确定允许建立本地路由承载的情况下，建 立本端用户终端和对端用户终端的本地路由承载。
在该系统中， 上述各模块可以设置于同一实体设备中， 或者， 也可以设置于不同的 实体设备中， 或者， 也可以部分模块设置于同一实体设备中， 其他模块任意设置， 等等。 例如， 相应的位置信息管理模块 201、 本地路由控制策略管理模块 205和本地路由控制 模块 202设置于第一设备中，相应的本地路由承载建立模块 203和本地路由执行模块 204 设置于第二设备中， 且相应的第二设备可以包括至少一个。
本发明实施例提供的该系统具体可以应用于 WiMAX (微波接入全球互操作）网络中， 该 WiMAX网络中的实体设备可以包括： 接入服务网网关 ASN GW、 基站 BS、 中继站 RS及 鉴权器网关； 其中， 第一实体设备可以包括： ASN GW或鉴权器网关， 第二实体设备可以 包括： ASN GW、 BS或 RS。 例如， 相应的位置信息管理模块 201可以设置于 ASN GW中， 相应的本地路由控制策略管理模块 205和本地路由控制模块 202可以设置于鉴权器网关 中， 相应的本地路由承载建立模块 203和本地路由执行模块 204则可以设置于锚定 ASN GW、 服务 ASN GW、 BS和 /或 RS中。
本发明实施例还提供了一种实现本地路由的装置，其具体实现结构如图 2B所示，可 以包括以下模块：
本地路由承载建立模块 203， 用于在接收支持本地路由策略指示后， 为本端用户终 端和 /或对端用户终端之间建立支持本地路由的承载， 进而关联相应的支持本地路由的 承载获得本地路由承载；
本地路由执行模块 204， 用于通过关联上述本地路由承载建立模块 203获得的本地 路由承载， 在所述本端用户终端和对端用户终端之间实现本地路由。
进一步地， 上述本地路由承载建立模块具体可以用于在确定本端用户终端和对端用 户终端符合本地路由条件后，将本端用户终端和对端用户终端分别建立的支持本地路由 的承载进行关联， 获得本地路由承载； 该本地路由承载建立模块还可以通过承载控制模 块控制建立的承载的属性， 相应的属性可以为是否支持本地路由等。 本发明实施例还提供了一种本地路由控制装置，其实现结构如图 2C所示，具体可以 包括以下模块：
本地路由控制模块 202， 用于根据发起通信的本端用户终端的位置信息及作为通信 对端的对端用户终端的位置信息，确定本端用户终端和对端用户终端之间是否符合本地 路由条件；
本地路由指示发送模块 207， 用于在上述本地路由控制模块 202确定本端用户终端 和对端用户终端之间符合本地路由条件后， 发送本地路由指示， 通过相应的本地路由指 示可以指示需要在本端用户终端和对端用户终端之间关联支持本地路由的承载， 以便由 相应的本地路由承载建立模块 203关联相应支持本地路由的承载。
可选地， 在该装置还可以包括位置信息管理模块 201， 用于管理通信网络中的用户 终端的位置信息， 用于为相应的本地路由控制模块 202提供用户终端的位置信息。
进一步地， 该装置还可以包括本地路由控制策略管理模块 205， 用于管理记录预先 配置（如根据用户的签约信息配置等） 的本地路由控制策略； 且相应的本地路由控制模 块 202还根据相应的本地路由控制策略确定在本端用户终端和对端用户终端之间是否需 要建立本地路由承载。
通过上述本发明实施例，便可以在通信网络中为需要通信的本端用户终端和对端用 户终端之间建立用于实现本地路由的本地路由承载， 以使得在后续的业务传输过程中可 以基于该本地路由承载实现业务传输的本地路由，即基于本地路由承载可以实现端到端 的业务传输的本地路由， 有效节省通信网络中的传输资源， 节省网络运营成本， 并可以 提高业务传输的性能。 为便于对本发明实施例的理解，下面将结合附图对本发明实施例的具体应用实现过 程进行详细的说明。
实施例一
在该实施例一中， 如图 3所示， 相应的实现本地路由的过程可以包括：
步骤 1， MS (移动台）发起网络接入过程， 在该接入过程中， 由地址学习与管理模 块（即位置信息管理模块） 学习并维护 MS的 IP或 MAC (媒体接入控制）地址， 并记录
MS的位置；
其中， MS的位置可以包括： BSID (基站标识） ， Serving GW ID (服务网关标识） 和 Anchor GW ID (网关标识） 。 步骤 2， 当 MS需要与通信对端进行通信时， 在应用层信令建立完成后， 网络侧触发 业务流 （或称承载） 建立。
具体地，本地路由控制策略管理模块根据维护的本地路由控制策略向业务流控制模 块发送本地路由策略， 以指示当前业务流采用的本地路由控制策略； 即指示业务流控制 模块控制相应的本地路由业务流建立模块发起建立支持本地路由的业务流的操作。
例如， 相应的本地路由控制策略可以为本地路由模式 （如集中式或分布式） ， 或本 地路由的粒度 （如位置、 用户或业务流等） 等信息中的一项或多项。
步骤 3， 业务流控制模块根据收到的本地路由策略， 以及 MS的 profile (参数）和 相应的业务流属性， 判断是否对该业务执行本地路由， 如果该业务授权为可执行本地路 由， 则需要解析 MS通信对端 IP地址或是 MAC地址， 发送业务流建立通知到本地路由控 制模块， 在相应的业务流建立通知中可以包含当前 MSID (MS标识） ， 通信对端的 IP地 址或 MAC地址。
相应的 MS的 profile可以包括本地路由模式、 本地路由粒度等， 相应的业务流属 性可以包括通信对端 IP/MAC、 业务 QoS等。
即在接收到相关的本地路由控制策略后， 通知业务流控制模块， 在业务流建立时， 针对特定的用户或业务， 需要赋予 P2P (点对点） 的本地路由属性， 即需要建立 P2P的 本地路由业务流， 此时， 需要向本地路由控制模块发送建立本地路由业务流的通知， 以 便于本地路由控制模块确定是否能够执行本地路由。
步骤 4， 本地路由控制模块接收到业务流建立通知后，发送位置查询请求到地址学 习与管理模块， 查询通信对端位置 MS;
具体可以查询通信对端的 IP地址或 MAC地址， 可选地还可以查询本端 MS的位置， 还可以查询本端 MS的 MS ID (MS标识） 。
步骤 5， 地址学习与管理模块根据通信对端 MS的 IP地址或 MAC地址以及本端 MS 的 MS ID向本地路由控制模块返回通信对端 MS和本端 MS的位置， 例如， 可以通过位置 报告将通信对端 MS和本端 MS的位置信息返回本地路由控制模块；
具体地， 相应的位置信息可以包括本端 MS和通信对端 MS的数据路径所在的 BS ID (基站标识） 、 RS ID (中继站标识） 和 GW ID (网关标识） ； 或者， 相应的位置信息可 以包含 CID (连接标识） 和 data path ID (数据路径标识） 。
步骤 6， 本地路由控制模块根据本端 MS和通信对端 MS的位置信息， 从接入点开始 确定本端 MS和通信对端 MS的数据路径的第一个重合点， 以判断本端 MS和通信对端 MS 之间的数据传输是否满足本地路由条件。
若确定本端 MS与通信对端 MS的数据路径完全不重合， 则不符合本地路由条件， 即 通知业务流控制模块不发起支持本地路由业务流的关联操作，并可以按照建立支持本地 路由的业务流。 此时， 若建立支持本地路由的业务流， 则在后续本端 MS开展业务过程 中， 在本端 MS进入到可以执行本地路由操作的区域时， 可以不必重新发起建立支持本 地路由的业务流， 而直接利用已经建立的支持本地路由的业务流便可以关联到对端 MS， 以关联建立本端 MS与对端 MS之间的本地路由业务流。
若确定出本端 MS与通信对端 MS的数据的第一个重合点， 则执行步骤 7;
步骤 7， 在确定本端 MS与通信对端 MS的数据路径存在重合点后， 则向业务流控制 模块发送建立业务流的指示消息， 在相应的指示消息中具体可以附带业务流关联指示， 以及本端 MS和通信对端 MS的数据路径的第一个重合点， 以便于可以在相应的执行点处 关联上述建立的业务流。
步骤 8， 业务流控制模块收到建立本地路由业务流的指示消息后， 发送建立业务流 指示消息到本地路由业务流建立模块， 以指示本地路由业务流建立模块将已经建立的本 端 MS的业务流和对端 MS的业务流关联起来， 进而获得相应的本地路由业务流；
具体地， 如果采用集中式控制方式， 则本地路由业务流的关联操作在本端 MS和通 信对端 MS各自的本地路由业务流建立模块执行， 随后通知到第一个重合点的执行实体; 如果采用分布式控制方式，则本地路由业务流关联在从本端 MS和通信对端 MS的数据路 径的第一个重合点执行。
步骤 9， 本地路由业务流建立模块接收到相应的建立业务流指示消息后建立相应的 本地路由业务流， 即根据指示关联到对端 MS的业务流， 以便于通过本地路由执行模块 实现本地路由；
在该步骤 9中完成相应功能的本地路由业务流建立模块和本地路由执行模块具体可 以设置于步骤 6中确定的第一个重合点中。
步骤 10， 完成与本端 MS的空口业务流的建立。
步骤 11， 如果应用层触发了通信对端 MS建立相应支持本地路由的业务流， 则参照 上述步骤， 建立相应的支持本地路由的上下行业务流， 并在特定的执行点将关联上述业 务流， 以实现本地路由业务流；
具体地，在上述步骤 9中，在本地路由业务流建立模块收到建立业务流指示消息后， 若通信对端 MS已经建立了支持本地路由的业务流， 则直接在上述步骤 9中便可以将本 端 MS和对端 MS之间的支持本地路由的业务流关联后建立相应的本地路由业务流；在上 述步骤 9 中， 在本地路由业务流建立模块收到建立业务流指示消息后， 若通信对端 MS 并未建立支持本地路由的业务流， 则需要执行该步骤 11， 触发对端 MS建立支持本地路 由的业务流， 进而建立相应的本端 MS与对端 MS之间的本地路由业务流。
步骤 12，本端 MS发送上行数据到本地路由业务流执行模块（即本地路由执行模块）， 该模块将数据直接发送到其通信对端相关联的下行业务流， 实现本地路由；
其中， 对于集中式控制方式本地路由控制、 本地路由业务流建立、 本地路由控制执 行模块可以位于同一物理实体； 对于分布式控制方式， 本地路由控制、 本地路由业务流 建立、 本地路由控制执行模块可以位于不同的物理实体内部。 实施例二
在该实施例二中， 具体以在 WiMAX (Worldwide Interoperabi l ity for Microwave Access , 全球接入微波互操作性） 网络中实现相应的本地路由操作为例， 对本发明实施 例的实现过程进行说明。
如图 4所示， 相应的 AF (应用功能） 触发的本地路由业务的实现过程可以包括： 步骤 1，本端 MS发起网络接入过程，在该过程中地址学习与管理模块所在的 ASN-GW (接入服务网网关） 交互， 学习并维护 MS的 IP或 MAC地址， 记录 MS的位置， MS的位 置具体可以包括： BS ID (基站标识） ， Serving GW ID (服务网关标识） 和 Anchor GW ID (锚定网关标识） 。
步骤 2， 本端 MS收到 AF发送的建立某应用的消息后， 便可以向 BS (基站） 发送
DSA-REQ (Dynamic service addition, 动态业务增加请求） 消息， 该 DSA-REQ消息具 体可以经由 RS (中继站） 中继到达 BS。
步骤 3， BS收到相应消息后， 发送 DSx_RVD (动态业务操作接受请求） 消息到本端 MS, 用于应答其发送的 DSA-REQ消息， 同时发送 Path_Reg_Req (数据通道注册请求）消 息到 Serving GW (服务网关） ， 以请求建立相应的业务流和数据通道。
步骤 4， Serving ASN-GW接收到该消息后，发送 Path_Reg_Req (数据通道注册请求） 消息到 Anchor ASN-GW (锚定 ASN-GW) ， 以请求建立相应的业务流和数据通道。
步骤 5， Anchor ASN-GW接收到该消息后， 发送 RR_Req (Resource Reservation, 资源预留请求）消息到位于 Authenticator ASN-GW (鉴权器 ASN-GW)的 Anchor SFA (锚 定业务流授权实体） ， 请求建立相应的业务流。 步骤 6， Authenticator ASN-GW根据本地路由控制策略， 判断该业务流是否支持本 地路由，如果支持本地路由，则发送 MS_address_information_req (位置信息查询请求） 消息到地址学习与管理模块，查询通信对端 MS的位置，如通信对端 MS的 IP地址或 MAC 地址， 可选地， 还可以查询本端 MS的位置， 如本端 MS对应的 MS ID (MS标识） 。
步骤 7， 地址学习与管理模块根据通信对端 MS的 IP地址或 MAC地址， 以及本端 MS 的 MS ID返回通信对端 MS和本端 MS的位置， 即向本地路由控制模块发送包含通信对端 MS和本端 MS的位置信息的 MS_address_information_rpt (位置信息查询报告） ， 相应 的位置信息包括本端 MS和通信对端 MS的数据路径所在的 BS ID、 RS ID和 GW ID, 或者， 相应的位置信息包括 CID和 data path ID。
步骤 8， 本地路由控制模块根据本端 MS和通信对端 MS的位置信息， 从接入点开始 确定本端 MS和通信对端 MS的数据路径的第一个重合点， 以判断本端 MS和通信对端 MS 之间是否符合本地路由条件。
若发现本端 MS与通信对端 MS的数据路径完全不重合，则确定不符合本地路由条件， 即通知业务流控制模块不通过本地路由业务流建立模块发起本地路由关联，并可以建立 支持本地路由的业务流 （例如， 建立的业务流的属性信息中可以记录为支持本地路由， 以便于在后续处理过程中本端 MS切换到可以支持本地路由的位置处后， 可以根据记录 的属性信息直接应用该支持本地路由的业务流实现本地路由） ， 在发送给业务流控制模 块的通知中还可以包含本地路由标识， 以用于指示可以建立支持本地路由的业务流； 若本端 MS与通信对端 MS的数据路径重合， 则确定可以与通信对端 MS的相关业务 流关联， 即可以建立相应的本地路由业务流， 并执行步骤 9。
步骤 9， 位于 Authenticator ASN-GW的 Anchor SFA根据本地路由确定的结果， 发 送 RR_Rsp (Resource Reservation, 资源预留响应） 消息到 Anchor ASN-GW, 以建立相 应的本地路由业务流；
其中， 在相应的 RR_Rsp消息中还可以包含： 本地路由标识， 用于指示该业务流支 持本地路由； 关联指示， 指示需要与通信对端 MS业务流进行关联； 执行点， 用于指示 业务流关联的执行功能实体。
步骤 10， Anchor ASN-GW接收到该 RR_Rsp消息后， 发送 Path_Reg_Rsp (数据通道 注册响应）消息到 Serving ASN-GW, 以建立相应的本地路由业务流和数据通道，可选地， 在 Path_Reg_Rsp消息中可以包含本地路由标识、 关联指示和执行点。
步骤 11， Serving ASN-GW收到 Path_Reg_Rsp消息后， 发送 Path_Reg_Rsp (数据通 道注册响应） 消息到 BS， 以建立相应的本地路由业务流和数据通道， 可选地， 在该 Path_Reg_Rsp消息中可以包含本地路由标识、 关联指示和执行点。
步骤 12， BS收到 Path_Reg_Rsp消息后， 发送 DSA_RSP (动态业务增加响应）消息， 相应的 DSA_RSP经 RS传输到 MS, 以建立相应的业务流。
可选地， 如果执行点在 RS， 在该 DSA_Rsp消息中可以包含本地路由标识、关联指示 和执行点。
若通信对端 MS的业务流已经建立，则执行点 BS将本端 MS与通信对端 MS的业务流 相关联， 以实现本地路由操作， 具体地， 相应的关联可以为将本端 MS与通信对端 MS的 业务流配置为一条端到端的通道， 以通过该端到端的通道进行本地路由操作。 若通信对 端 MS的业务流未建立， 则需要执行后续的步骤 16建立通信对端 MS的业务流。
步骤 13， MS接收到所述 DSA_RSP消息后， 向 BS返回 DSA_ACK (动态业务增加确认） 消息。
步骤 14， BS收到 DSA_ACK消息后， 发送 Path_Reg_ACk (数据通道注册响应） 消息 到 Serving ASN-GW, 进而将 Path_Reg_Ack消息发送到 Anchor ASN_GW。
步骤 15， Anchor ASN-GW 收到 Path_Reg_Ack 消息后， 发送 RR_Ack 消息到
Authenticator GW。
步骤 16， Authenticator ASN-GW/ Anchor SFA发起到通信对端 MS的业务流建立， 相应的业务流建立过程同上述步骤 2— 15;
其中， 通信对端 MS具体可以为通过与 AF之间的消息交互执行相应的步骤 2， 进而 执行后续的步骤以建立通信对端 MS 的业务流， 以及在业务流建立过程中， 还需要将本 端 MS与通信对端 MS的上下行业务流相关联， 以实现本地路由操作；
需要说明的是， 上述步骤 16的执行时序并不限于在步骤 15之后， 其具体可以在通 信对端 MS与地 AF交互并确定在通信对端 MS需要执行相应的步骤 2后的任意时间开始 执行相应的步骤 2， 进而执行后续各步骤。
步骤 17， 本端 MS上行数据经上行业务流， 在本地路由业务流执行实体上直接发送 到通行对端的下行业务流， 以通过建立的本地路由业务流实现本端 MS与通信对端 MS之 间的数据传输的本地路由。
在该实施例三中， 具体以在 WiMAX网络中实现相应的本地路由操作为例， 对本发明 实施例的实现过程进行说明。
如图 5所示， 相应的由包含 PCEF (策略和计费执行功能）等功能的 PCC (策略计费 控制） 触发的本地路由业务的实现过程可以包括：
步骤 1， 本端 MS发起网络接入过程， 在该过程中地址学习与管理所在的 ASN-GW交 互，学习并维护 MS的 IP或 MAC地址，记录 MS的位置，相应的 MS的位置可以包括 BSID、 Serving GW ID和 Anchor GW ID。
步骤 2， 当本端 MS有业务需求时， AF (应用功能）发送 AAR (Application-Auth-R equest, 申请鉴权请求）消息到 PCRF (策略与计费规则功能） ， 以触发相应的业务流建 立过程。
步骤 3， PCRF收到相应的 AAR消息后， 发送 RAR (Re_Auth_Request， 再鉴权请求） 消息到位于 Authenticator ASN-GW中的 PCEF, 在该 RAR消息中携带本地路由通知和本 地路由的 profile (参数） ， 以通知允许执行相应的本地路由操作， 相应的本地路由的 参数可以包括本地路由的模式、 粒度等。
步骤 4， Authenticator ASN-GW根据本地路由控制策略， 判断该业务流是否支持本 地路由，如果支持本地路由，则发送 MS_address_information_req (位置信息查询请求） 消息到地址学习与管理模块， 以查询通信对端 MS的位置， 相应的通信对端 MS的位置可 以包含通信对端 MS的 IP地址 /MAC地址， 可选地， 还可以查询本端 MS的位置， 如本端 MS的 MS ID等。
步骤 5， 地址学习与管理模块根据通信对端 MS的 IP地址或 MAC地址， 以及本端 MS 的 MS ID返回通信对端 MS和本端 MS的位置信息 （或路径信息） ， 即发送包含通信对端
MS和本端 MS的位置信息的 MS_address_information_rpt (位置信息查询报告）给本地 路由控制模块， 相应的通信对端 MS和本端 MS的位置信息具体可以包括本端 MS和通信 对端 MS的数据路径所在的 BS ID、 RS ID和 GW ID, 或者相应的通信对端 MS和本端 MS 位置信息也可以包括 CID和 data path ID。
步骤 6， 本地路由控制模块根据收到的本端 MS和通信对端 MS的位置信息， 从接入 点开始确定本端 MS和通信对端 MS的数据路径的第一个重合点， 以判断本端 MS和通信 对端 MS之间是否符合本地路由条件；
若确定本端 MS与通信对端 MS的数据路径完全不重合，则确定不符合本地路由条件， 通知业务流控制模块不发起本地路由关联， 并建立支持本地路由的业务流， 还可以包含 本地路由标识， 用于指示该业务流支持本地路由； 若确定本端 MS与通信对端 MS的数据路径存在重合点， 则确定符合本地路由条件， 即可与通信对端 MS的相关业务流关联， 并执行步骤 7。
步骤 7， 在确定符合本地路由条件后， 位于 Authenticator ASN-GW 的 PCEF发送 RR_Req消息到 Anchor ASN-GW, 以建立相应的本地路由业务流， 在该 RR_Req消息中还 可以包含： 本地路由标识， 用于指示该业务流支持本地路由； 关联指示， 指示与通信对 端业务流进行关联； 执行点， 用于指示业务流关联的执行功能实体。
步骤 8， Anchor ASN-GW接收到该 RR_Req消息后，发送 Path_Reg_Req消息到 Serving ASN-GW, 以建立相应的本地路由业务流和数据通道， 可选地， 在该 Path_Reg_Req消息 可以包含本地路由标识、 关联指示和执行点。
步骤 9， Serving ASN-GW收到 Path_Reg_Req消息后，根据关联指示和执行点， Serving
GW将本端 MS与通信对端 MS的业务流相关联， 以实现本地路由操作。
继续发送 Path_Reg_Req消息到 BS， 以建立相应的本地路由业务流 /数据通道。 步骤 10， BS收到 Path_Reg_Req消息后， 发送 DSA_REQ消息， 该消息经 RS发送到 本端 MS， 以建立相应的业务流。
步骤 11， 本端 MS接收到 DSA_REQ消息后， 返回 DSA_RSP消息， 同样， 相应的消息 经 RS中继到 BS。
步骤 12， BS收到 DSA_RSP消息后， 发送 Path_Reg_Rsp消息到 Serving ASN-GW, 以 建立相应的业务流和数据通道。
步骤 13， Serving ASN-GW接收到该 Path_Reg_Rsp消息后， 继续发送 Path_Reg_Rsp 消息到 Anchor ASN-GW, 以建立相应的业务流和数据通道。
步骤 14， Anchor ASN-GW接收到该 Path_Reg_Rsp消息后， 发送 RR_Rsp消息到位于 Authenticator ASN-GW的 Anchor SFA， 建立相应的业务流。
步骤 15， PCEF确定建立了与本端 MS的业务流后， 发送 RAA (Re-Auth- Answer, 重 鉴权应答） 消息到位于 CSN (核心网） 的 PCRF作为响应。
步骤 16， 当本端 MS有业务需求时， PCRF发送 AAA (Application-Auth-Answer， 申 请鉴权应答） 消息到 AF作为响应。
步骤 17， Authenticator ASN-GW/PCEF发起到通信对端 MS的业务流建立， 相应的 业务流的建立过程与上述步骤 7— 16描述的过程类似， 在此不再重复描述；
在业务流建立过程中， 还需要将本端 MS与通信对端 MS的上下行业务流相关联， 以 完成本地路由操作。 步骤 18， 本端 MS上行数据经上行业务流， 在本地路由业务流执行实体上直接发送 到通行对端的下行业务流， 通过相应的支持本地路由的业务流实现本地路由。
通过上述本发明实施例可以实现本端 MS与通信对端 MS之间的本地路由， 以节省回 程网络的带宽， 能够降低运营商成本， 节省传输。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通 过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质 中， 该程序在执行时， 可包括如上述各方法的实施例的流程。 其中， 所述的存储介质可 为磁碟、 光盘、 只读存储记忆体（Read-Only Memory, ROM)或随机存储记忆体（Random Access Memory, RAM) 等。
以上所述， 仅为本发明较佳的具体实施方式， 但本发明的保护范围并不局限于此， 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内， 可轻易想到的变化或替 换， 都应涵盖在本发明的保护范围之内。 因此， 本发明的保护范围应该以权利要求的保 护范围为准。

Claims

权利要求
1、 一种实现本地路由的方法， 其特征在于， 包括：
在根据发起通信的本端用户终端的位置信息及作为通信对端的对端用户终端的位置 信息， 确定本端用户终端和对端用户终端符合本地路由条件后， 关联本端用户终端和对 端用户终端分别建立的支持本地路由的承载， 以获得本地路由承载；
通过所述本地路由承载， 在所述本端用户终端和对端用户终端之间实现本地路由。
2、 根据权利要求 1所述的方法， 其特征在于， 该方法还包括：
根据预定的本地路由控制策略确定是否允许与本端用户终端和对端用户终端建立支 持本地路由的承载， 并在确定允许时， 建立本端用户终端和对端用户终端各自支持本地 路由的承载的操作。
3、 根据权利要求 2所述的方法， 其特征在于， 所述本地路由控制策略包括： 基于用户的本地路由控制信息、 基于承载的本地路由控制信息或基于位置的本地路 由控制信息中的至少一项；
或者，
基于用户的本地路由控制信息、 基于承载的本地路由控制信息或基于位置的本地路 由控制信息中的至少一项， 以及本地路由模式； 其中， 所述本地路由模式包括由同一实 体进行本地路由决策控制的集中式控制方式和由多个实体分别进行本地路由决策的分 布式控制方式。
4、根据权利要求 1或 2所述的方法， 其特征在于， 所述确定本端用户终端和对端用 户终端符合本地路由条件包括：
确定本端用户终端和对端用户终端之间的路径上具有路径重合点。
5、根据权利要求 1或 2所述的方法， 其特征在于， 所述的发起通信的过程包括在微 波接入全球互操作 WiMAX网络中发起通信。
6、 一种实现本地路由的系统， 其特征在于， 包括：
位置信息管理模块， 用于管理通信网络中的用户终端的位置信息；
本地路由控制模块， 用于根据所述位置信息管理模块管理的发起通信的本端用户终 端的位置信息及作为通信对端的对端用户终端的位置信息，确定本端用户终端和对端用 户终端之间是否符合本地路由条件；
本地路由承载建立模块， 用于在所述本地路由控制模块确定本端用户终端和对端用 户终端之间符合本地路由条件后，关联本端用户终端和对端用户终端之间分别建立的支 持本地路由的承载， 以获得本地路由承载；
本地路由执行模块， 用于通过所述本地路由承载建立模块获得的本地路由承载， 在 所述本端用户终端和对端用户终端之间实现本地路由。
7、 根据权利要求 6所述的系统， 其特征在于， 该系统还包括：
本地路由控制策略管理模块， 用于管理记录本地路由控制策略； 且所述本地路由控 制模块还根据所述本地路由控制策略确定与所述本端用户终端和对端用户终端是否需 要建立支持本地路由的承载；
承载建立模块， 用于在所述本地路由控制策略管理模块确定需要时， 在本端用户终 端和对端用户终端之间分别建立的支持本地路由的承载。
8， 根据权利要求 7所述的系统， 其特征在于， 所述位置信息管理模块、本地路由控 制策略管理模块和本地路由控制模块设置于第一设备中，所述本地路由承载建立模块和 本地路由执行模块设置于第二设备中， 且所述第二设备包含至少一个。
9、根据权利要求 7或 8所述的系统， 其特征在于， 所述本地路由控制策略管理模块 还将本地路由控制的粒度和本地路由模式中的至少一项通知所述本地路由承载建立模 块，所述本地路由模式包括由同一实体进行本地路由决策控制的集中式控制方式和由多 个实体分别进行本地路由决策的分布式控制方式。
10、 根据权利要求 7或 8所述的系统， 其特征在于， 在所述本地路由控制模块确定 本端用户终端和对端用户终端之间不符合本地路由条件时，所述承载建立模块建立的支 持本地路由的承载用于在符合所述本地路由条件时应用。
11、 根据权利要求 7或 8所述的系统， 其特征在于，
所述承载建立模块根据本地路由控制模块发送来的本地路由指示， 执行建立支持本 地路由的承载， 其中， 所述本地路由指示用于指示需要建立支持本地路由的承载； 和 / 或， 所述本地路由承载建立模块根据本地路由控制模块发送来的关联指示， 对建立的支 持本地路由的承载执行关联操作， 所述关联指示用于指示需要执行所述关联操作； 所述本地路由控制模块还发送执行点的信息， 所述执行点的信息用于指示执行关联 的实体。
12、 根据权利要求 8所述的系统， 其特征在于， 所述的通信网络包括微波接入全球 互操作 WiMAX网络， 该 WiMAX网络中的实体设备包括： 接入服务网网关 ASN GW、 基站 BS、 中继站 RS及鉴权器网关； 其中， 所述第一实体设备包括： ASN GW或鉴权器网关， 所述第二实体设备包括： ASN GW、 BS或 RS。
13、 根据权利要求 12所述的系统， 其特征在于，
所述位置信息管理模块设置于 ASN GW中，所述本地路由控制策略管理模块和本地路 由控制模块设置于鉴权器网关中，所述本地路由承载建立模块和本地路由执行模块设置 于锚定 ASN GW、 服务 ASN GW、 BS和 /或 RS中。
14、 一种实现本地路由的装置， 其特征在于， 包括：
本地路由承载建立模块， 用于在接收本地路由指示后， 关联本端用户终端和对端用 户终端之间分别建立的支持本地路由的承载， 以获得本地路由承载；
本地路由执行模块， 用于通过所述本地路由承载建立模块获得的本地路由承载， 在 所述本端用户终端和对端用户终端之间实现本地路由。
15、 一种本地路由控制装置， 其特征在于， 包括：
本地路由控制模块， 用于根据发起通信的本端用户终端的位置信息及作为通信对端 的对端用户终端的位置信息，确定本端用户终端和对端用户终端之间是否符合本地路由 条件；
本地路由指示发送模块， 用于在所述本地路由控制模块确定本端用户终端和对端用 户终端之间符合本地路由条件后， 发送本地路由指示， 所述本地路由指示用于指示需要 在本端用户终端和对端用户终端之间关联建立本地路由承载。
16、 根据权利要求 15所述的装置， 其特征在于， 该装置还包括：
位置信息管理模块， 用于管理通信网络中的用户终端的位置信息， 用于为所述本地 路由控制模块提供用户终端的位置信息。
17、 根据权利要求 15或 16所述的装置， 其特征在于， 该装置还包括：
本地路由控制策略管理模块， 用于管理记录本地路由控制策略； 且所述本地路由控 制模块还根据所述本地路由控制策略确定所述本端用户终端和对端用户终端之间是否 需要建立本地路由承载。
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