Patent ID: 9184843
Filing Date: 2015-11-10
Classification: H04B,H04W

Abstract:
1. A distributed antenna system apparatus, comprising: at least one downlink radio frequency (RF) interface configured to receive downlink RF signals and distribute the downlink RF signals over at least one downlink communications medium to one or more remote antenna units (RAUs); at least one uplink RF interface configured to receive uplink RF signals over at least one uplink communications medium from the one or more RAUs; at least one propagation delay measurement circuit communicatively coupled to the at least one downlink RF interface and the at least one uplink RF interface and configured to measure propagation delay between the distribution of the downlink RF signals by the at least one downlink RF interface and the receipt of the downlink RF signals as uplink RF signals by the at least one uplink RF interface; and a controller communicatively coupled to the at least one propagation delay measurement circuit and configured to: