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Data transmission method when routing area updates

A data transmission method and routing area technology, applied in the field of third-generation mobile communication systems, can solve problems such as adding new SGSN complexity, achieve the effects of improving data forwarding efficiency, flexible data transmission, and shortening the update time

Inactive Publication Date: 2008-08-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this process will increase the complexity of the new SGSN

Method used

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  • Data transmission method when routing area updates
  • Data transmission method when routing area updates
  • Data transmission method when routing area updates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] exist figure 1 In the processing flow shown, even if multiple SGSN IP addresses are directly set in the SGSN context notification message sent by the new SGSN to the old SGSN, according to the original design, the old SGSN may ignore all but the first IP address in the notification message. All IP addresses other than . In view of this situation, the scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] The solution of the present invention is mainly to set a plurality of SGSN IP addresses in the SGSN context notification message of the new SGSN, these IP addresses are the IP addresses carried by the PDP context, and set each IP address and the TEID allocated by the new SGSN for each PDP context Correspondence of IE of II. In this way, when updating the routing area between SGSNs, the old and new SGSNs can simultaneously forward the PDP context through multiple tunnels...

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Abstract

The invention discloses data transmission method when the route region is refreshed. The method comprises following steps: MS requires the new SGSN of new route region to attain the PDP context from the old SGSN of old route region when the route region is refreshed in SGSN; the new SGSN arranges the tunnel to each PDP context after receiving the PDP context from old SGSN and arranges the IP address of relative PDP context to each tunnel, then, sending the relation between distributed tunnels and IP addresses to the old SGSN; the old SGSN transmits the data of each PDP context to the new SGSN via relative tunnel. The inventive method solves the problem that old SGSN can only transmit the data to unique address in present technique, so the new SGSN should relates to distribution modules for distributing data. The invention can make the transmission of user's data more flexible when the route region of SGSN is refreshed, simplify the design of system and shorten the refresh time of route region.

Description

technical field [0001] The present invention relates to the technical field of the third generation mobile communication system (3GPP), and more specifically relates to a data transmission method when the routing area is updated between serving general packet radio service support nodes (SGSN). Background technique [0002] The 3GPP adopting wideband code division multiple access (WCDMA) air interface technology includes a radio access network (RAN, Radio Access Network) and a core network (CN, Core Network). Wherein, the core network is logically divided into a circuit switched domain (CS, Circuit Switched Domain) and a packet switched domain (PS, Packet Switched Domain). The GPRS support node (GSN) including the SGSN and the gateway GPRS support node (GGSN) belongs to the PS domain in the core network. [0003] SGSN is a functional node in the PS domain of the WCDMA core network. This node communicates with the Radio Network Controller (RNC), GGSN, Home Location Register / ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/28H04W60/04H04W76/00
Inventor 王广伟黄华
Owner HUAWEI TECH CO LTD
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