Patent ID: 9565700
Date: 2017-02-07
CPC Classifications: H04L,H04W

Claim:
1. In a multiple access wireless communication system having a plurality of base stations covering a plurality of cells, a method by a base station to determine a time delay associated with a mobile station using a random access subchannel, the method comprising: allocating, within a communication channel, a random access (RA) subchannel selected from a plurality of frequency subchannels and a RA time slot selected from a plurality of time slots, the RA time slot and RA subchannel associated with the cell in which the base station is located; receiving a signal from a mobile station over the selected RA subchannel in the selected RA time slot; processing the received signal by: identifying the mobile station associated with the RA sequence; and transmitting to the identified mobile station an indication of a time advance based on the determined time delay associated with the mobile station.