×

Downlink baseband signal generating method, relevant device and system

  • US 8,705,483 B2
  • Filed: 12/11/2012
  • Issued: 04/22/2014
  • Est. Priority Date: 12/21/2010
  • Status: Active Grant
First Claim
Patent Images

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.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×