Patent ID: 9628232
Date: 2017-04-18
CPC Classifications: H04L,H04W

Claim:
1. A method of radio transmission in an Orthogonal Frequency Division Multiplex (OFDM) based cellular wireless radio transmission system, wherein radio access equipment of said OFDM based cellular wireless radio transmission system connects to multiple geographically spread radio antennas of a Distributed Antenna System (DAS) for transmitting and receiving radio signals to and from user equipment arranged for operating in said radio transmission system, the method comprising the steps of: establishing transmit timings for radio transmission between said user equipment and said radio antennas of said DAS, said transmit timings being construed as any information provided or measured from which data relevant to absolute propagation times of radio signals between said user equipment and said radio antennas of said DAS can be established, and scheduling said radio transmission based on said established transmit timings, wherein said scheduling comprises selecting at least one radio antenna of said DAS for transmitting and receiving radio signals to and from said user equipment, and wherein each selected radio antenna of said DAS transmits and receives radio signals to and from said user equipment with equal transmit timings if more than one radio antenna for said DAS is selected.