Patent ID: 8705483
Filing Date: 2014-04-22
Classification: H04L,H04W

Abstract:
1. A downlink baseband signal generating method, implemented by a radio access network node at a distributed base station with remote radio, comprising: performing channel coding and modulation on a downlink data stream of a user in a cell, and obtaining a downlink coded and modulated user signal of the cell; generating a downlink control channel signal according to physical-layer control information; and forwarding a reference signal, a synchronization signal, a broadcast channel signal, the downlink coded and modulated user signal, and the downlink control channel signal to a corresponding remote radio unit, so that the corresponding remote radio unit performs multi-input multi-output precoding on the downlink coded and modulated user signal, maps the downlink coded and modulated user signal that has undergone the multi-input multi-output precoding, the downlink control channel signal, the reference signal, the synchronization signal, and the broadcast channel signal to their respective subcarriers, performs inverse fast Fourier transformation to obtain a downlink baseband signal, and sends the downlink baseband signal out.