Patent ID: 8570914
Filing Date: 2013-10-29
Classification: H04B,H04W

Abstract:
1. A method for determining a location of a client device in a distributed antenna system in which multiple antennas are located in an indoor region, wherein each of the antennas is located in a known area and provides a respective coverage area for communicating with the client device, comprising: selecting one or more specific time slot(s) from downlink radio frequency (RF) signals; calculating received signal strength indication (RSSI) values for each of a plurality of resource blocks (RBs) at a specific time slot from uplink RF signals; delivering the RSSI values of all the antennas to a location server of a location processing unit (LPU); and identifying which of the antennas is closest to a transmitting client device by monitoring the RSSI values, further comprising at least two receiving antennas per antenna location to receive the downlink and uplink RF signals sent by the client device, wherein the RSSI values of at least two of the receiving antennas are calculated individually and then combined together, wherein control information of downlink/uplink intervals is used to switch between downlink and uplink at a head-end unit.