Patent ID: 9603032
Date: 2017-03-21
CPC Classifications: H04B,H04W

Claim:
1. A method of automatically measuring noise levels of a plurality of uplink paths in a Distributed Antenna System (DAS), the DAS comprising a head end, a plurality of remote units (RUs) connected to the head end, a plurality of first switches at the head end for respectively connecting each of the plurality of uplink paths between the head end and each RU of the plurality of RUs, a second switch between each RU of the plurality of RUs and a corresponding antenna for receiving external signals, and a central control unit configured to determine respective statuses of the plurality of uplink paths, to control the first switches at the head end for switching each of the plurality of uplink paths on or off, and to control the second switches between each RU and the corresponding antennas, method comprising: switching off all of the plurality of uplink paths; sequentially switching on each uplink path of the plurality of uplink paths individually while other uplink paths of the plurality of uplink paths is switched off to separately measure a noise level of each uplink path; wherein when each uplink path of the plurality of uplink paths is sequentially switched on, the method further comprises: wherein when the detected noise level of one of the plurality of uplink paths is abnormal compared to the threshold value, a status of the second switch between the RU and the corresponding antenna associated with the one uplink path is determined for determining an abnormal status type of the one uplink path.