Baseband system, base station and processing method supporting softer switch

Abstract

The invention relates to a base band system, a base station and a processing method supporting softer handoff. The base band system comprises: at least one base band processing and controlling unit and a plurality of distributed base band units which are connected with the endmost base band processing and controlling unit through an RF interface of the distributed base band, wherein the distributed base band units are used for demodulating the signals transmitted by corresponding RF units and transmitting demodulated data to the base band processing and controlling unit through the RF interface of the distributed base band; the base band processing and controlling unit is used for decoding data demodulated by the distributed base band. The base band system, the base station and the processing method supporting softer handoff can decrease data quantity needed to be transmitted during softer handoff.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a technical solution for supporting softer handover. Background technique [0002] In a wireless communication system, softer handover (Softer Handover) refers to the handover performed by a mobile station between multiple sectors covered by a base station (NodeB). A link between two or more sectors of a base station. That is to say, the signal sent by the mobile station will also be received by the radio frequency unit of the adjacent sector during softer handover. At this time, the mobile station and the base station will communicate through at least two different air interface channels at the same time (each sector has at least one ). After receiving the mobile station signal through the radio frequency unit of each sector, the base station centrally processes the mobile station signal, and combines these processed signals to improve the receiving gain, thereb...

AI Technical Summary

Problems solved by technology

[0005] In the existing WCDMA system, there is a high requirement on the bandwidth of the baseband radio frequency interface. For example, a 5M carrier frequency requires a bandwidth of more than 200M in uplink transmission. When the base station performs softer handover for multiple mobile stations at the same time, multiple The radio frequency unit needs to transmit corresponding multi-channel signals to the baseband unit through the baseband radio frequency interface, which requires the baseband radio frequency interface of the base station to have a very high bandwidth to support softer handover, and the high bandwidth base station system is very complex and costly also very high

Images