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

A wireless communication system and cross-base station technology, applied in the field of seamless handover of terminal equipment across base stations, can solve problems such as increasing data transmission delay, signaling, abnormal data transmission, abnormal signaling data transmission, etc.

Active Publication Date: 2013-05-22
北京久华信信息技术有限公司
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  • Abstract
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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 intera

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

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Embodiment Construction

[0026] A data buffer entity is added between the base station and the gateway on the network side of the wireless communication system, and multiple base stations correspond to a data buffer entity; this entity buffers the data sent by the gateway to the wireless terminal and adds sequence number information to each data packet; that is During the uplink and downlink data communication between the wireless terminal and the gateway, the data buffer entity saves a series of data packets in the buffer and adds sequence number information. When the terminal device is switching between base stations, there is a data packet loss, and the terminal device will finally receive it correctly. The sequence number of the data packet is sent to the data buffer entity through the source base station or the target base station, and the buffer will resend the data packet lost by the terminal device to the terminal device according to this sequence number.

[0027] This technical solution is des...

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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...

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Application Information

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IPC IPC(8): H04W36/00H04W36/02H04W36/18H04L1/00
Inventor 孟浩张勇高子龙黄飞
Owner 北京久华信信息技术有限公司
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