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Route optimizing method, system and access network unit in switching process

A technology for accessing network elements and switching processes, which is applied in the field of communications and can solve problems such as low processing performance and poor real-time performance.

Inactive Publication Date: 2013-05-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0022] The technical problem to be solved by the present invention is to provide a method and system for routing optimization in the handover process and access network elements to solve the problem of low processing performance and poor real-time performance caused by access gateway monitoring, detection and maintenance of communication peer information

Method used

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  • Route optimizing method, system and access network unit in switching process
  • Route optimizing method, system and access network unit in switching process
  • Route optimizing method, system and access network unit in switching process

Examples

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Embodiment 1

[0073] Such as figure 1 In the schematic diagram of handover management in the shown prior art 1 scenario, the access service router (ASR) is an access gateway, responsible for service functions such as host access management and handover management, and sending and receiving data packets of the host; the mapping server (ILR) The corresponding relationship between the identity identifier AID of the host and the location identifier RID is saved. The access management of HOST1 is performed by the access gateway ASR1, and the access management of HOST3 is performed by the access gateway ASR3. The access gateway ASR1 allocates a location identifier RID1 (11 in the figure) to HOST1. The host HOST1 is in data communication with the communication peer HOST3. At this time, HOST1 uses the encapsulation of the location identifier RID1 to send and receive data with the communication peer. The sending and receiving path of the data message is shown in Figure 12, and is forwarded via ASR...

Embodiment 2

[0104] Figure 4 It is a schematic diagram of LISP-based network topology in prior art 2. The devices in the LISP system include host, border routers ITR, ETR and core routers. A tunnel router (TR) is deployed at the edge of the network site. The router at the entrance of the tunnel is called the Ingress Tunnel Router (ITR for short), and the router at the exit of the tunnel is called the Egress Tunnel Router (ETR for short). The ITR in LISP is responsible for data encapsulation and mapping search, and searches for the corresponding RLOC information according to the destination EID information. A layer of LISP header is encapsulated outside the original host message. ETR in LISP is responsible for the decapsulation of datagrams. LISP ALT plane MAP server / MAP Resolver saves the mapping relationship of EID-to-RLOC.

[0105] The data forwarding process of the LISP protocol is as follows: Figure 5 shown. The encapsulation of the LISP data message is completed on the ingress...

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Abstract

The invention discloses a route optimizing method, a system and an access unit in a switching process. Identity label information of a corresponding node of a terminal is obtained from the terminal by a target access network unit in the process that the terminal is converted from a source access network unit to the target access network unit, and the access network unit of the corresponding node is triggered to update a corresponding node mapping relation. A signaling interactive process between a network and a terminal host is added in the route optimizing method so as to obtain communication corresponding node information, and therefore corresponding node information which conducts data communication can be obtained in real time. Following data flow route optimizing processes can be conducted timely, and the problems of low process performance and bad timeliness caused by monitoring, detecting and maintenance of the corresponding information by an access gateway are solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and system for route optimization in a handover process and an access network element. Background technique [0002] Traditional IP networks do not support terminal mobility. Various solutions have been proposed in the prior art, mainly including IETF's Mobile IPv4, Mobile IPv6, Proxy Mobile IPv6, 3GPP's GPRS Tunneling Protocol (GPRS Tunneling Protocol, GTP for short), etc. . The existing technology adopts a fixed anchor point to support the mobility of the terminal. For example, in WCDMA, the GPRS support node (GGSN) is specified as the mobile anchor point of the terminal; in the CDMA network, the mobile IP protocol is used, and the home agent (HA) is used as the anchor point. However, fixed anchor points will cause the problem of roundabout paths for data packets, which will increase transmission delay and bandwidth waste. With the development of mobil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/24H04W40/36
CPCH04W36/0055H04W40/36H04W40/24H04W8/14
Inventor 吴强江华符涛
Owner ZTE CORP
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