Method and device for switch controlling

Abstract

A handover control method is applicable to handover between networks adopting different access technologies. A serving gateway of a source network buffers downlink data of a user terminal on the source network after the source network determines that the user terminal is ready to be handed over to a target network. The serving gateway of the source network sends the downlink data to a serving gateway of the target network after the user terminal is handed over from the source network to the target network.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a switching control method and equipment. Background technique [0002] With the development of communication technology, many communication networks are constantly evolving to provide higher rates and richer services. Different evolved networks can communicate with each other through related interfaces. [0003] See figure 1 , figure 1 It is a schematic diagram of an architecture for intercommunication between a Long Term Evolution (LTE, Long Term Evolution) network and an evolved High Rate Packet Data (eHRPD, evolved High Rate Packet Data) network. Among them, the LTE network mainly includes: an evolved base station (eNB, evolved Node B) 1101, a mobility management entity (MME, Mobility Management Entity) 1102, a serving gateway (S-GW, Serving Gateway) 1103, and the LTE network may also include a home subscription A subscriber server (HSS, Home Subscriber Serv...

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Problems solved by technology

[0006] Take UE switching from LTE network to eHRPD network using non-optimized handover as an example. In the existing handover process, UE performs non-optimized handover to transfer the air interface from LTE network to eHRPD network, and the related bearers of the UE in the LTE network will be Reserved, if the UE is in the connected state and the P-GW obtains the downlink data of the UE on the LTE network at this time, the P-GW will usually continue to send the obtained downlink data of the UE on the LTE network to the S-GW, and the S-GW Usually, it forwards the downlink data of the UE on the LTE network received from the P-GW to the eNB, and the eNB usually directly discards the downlink data of the UE on the LTE network received from the S-GW after the attempt fails, and then After switching to the eHRPD network, the UE cannot obtain its downlink data on the LTE network

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