Method, system and device for identifying forward mode of packet data in switch

Abstract

The invention discloses a method, a system and a device for ensuring a forwarding mode of grouped data in a switching process, wherein, the method comprises the processes: when an accessing terminal AT is in switching, a source accessing network S-AN of the AT sends a message carrying a piece of switching mode information and a building mode of the AT supporting routing information to a target accessing network T-AN of the AT; the T-AN ensures the mode of grouped data transmission for the AT according to the switching mode information carried by the message and the building mode of the AT supporting routing information, and informs a grouping data network side with the mode. The grouping data network side transmits grouping data for the AT by adopting the mode. The method, the system and the device provided by the invention can reduce the transmission interval of grouping data, ensure QoS quality of the grouping data service in real time when the AT carries out switching.

Description

Technical field [0001] The present invention relates to handover technology in a wireless communication system, in particular to a method, system and device for determining a packet data forwarding mode in a handover process. Background technique [0002] In wireless communication systems, such as code division multiple access (CDMA) 2000 systems, including CDMA2000 1x systems and High Rate Packet Data (HRPD) systems, CDMA 1x systems can provide data rates up to 153.6kbps, and HRPD systems can Provides a data rate of up to 2.4Mbps, and can carry out packet data services such as video-on-demand, online games and high-speed data downloads. It is very important to perform packet data mobility management in the CDMA 20001x system or HRPD system, that is, how to perform packet data The handover is very important, which can ensure the continuity of the transmitted packet data when the access terminal (AT, Access Terminal) is moving. [0003] figure 1 It is a schematic diagram of the ...

AI Technical Summary

Problems solved by technology

However, it cannot be ruled out that the combination of non-connection before disconnection and the establishment of two routes: first, AT cannot support the establishment of two routes

The second is that in some cases, ANs can only perform hard switching in connection mode (for example, T-AN does not support cross-connection)

In the latter two cases, for AT's real-time packet data service, if the S-PDSN adopts a single-send mode during the handover process, it may cause obvious packet data transmission intervals and reduce the QoS quality of real-time packet data

For non-real-time packet data services, if the S-PDSN uses dual transmission during the handover process, it will cause a waste of network processing resources

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