Inter-base station seamless handover method for terminal equipment in wireless communication system

Abstract

The invention relates to an inter-base station seamless handover method for terminal equipment in a wireless communication system. The inter-base station seamless handover method includes: adding a data buffer entity on base stations of the wireless communication system, wherein a plurality of base stations correspond to one data buffer entity; for a downstream data communication process transmitted to a terminal at a network side, by the aid of the data buffer entity, adding sequence number information to downstream data packages transmitted to the terminal and directly transmitting the downstream data packages to the base station where the terminal is positioned, and continuously backing up the sequence number information added downstream data packages in a buffering area in the data buffer entity. By the aid of the inter-base station seamless handover method, a large number of signaling interaction processes are reduced, signaling, data transmission and receiving processes are simplified, and abnormal errors are not prone to generating.

Description

technical field [0001] The invention relates to a method for seamless switching of terminal equipment across base stations in a wireless communication system. Background technique [0002] In existing wireless communication systems, when a terminal moves from one base station to another during data transmission, it needs to switch between the source base station and the target base station. Therefore, during the data transmission process of the wireless communication system, when the terminal performs cross-base station handover, the terminal needs to transmit the uplink data packets to the network side through the source base station and the target base station, and the base station performs out-of-order rearrangement and packet loss on the uplink data packets. Retransmission control, repeated packet detection and discarding, when the data packet is lost during the switching process, the terminal completes the retransmission function of the lost packet. For downlink data t...

AI Technical Summary

Problems solved by technology

This technical solution requires a large amount of signaling interaction between the source base station and the target base station, and increases the data transmission delay during the data packet migration process, which is prone to abnormal signaling and data transmission; 2) Uplink and downlink data transmission between the terminal and the network side In the process, in order to ensure that the data packets transmitted by the terminal are not lost when switching between base stations, the existing scheme requires signaling interaction between the terminal and the source base station, signaling interaction between the terminal and the target base station, signaling interaction between the source base station and the target base station, and signaling interaction between the target base station and the gateway. Signaling interaction to ensure data integrity

This technical solution requires a lot of signaling interaction, and increases the data transmission delay during the business data migration process, which is prone to abnormal signaling and data transmission

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