Patent ID: 9699751
Date: 2017-07-04
CPC Classifications: H04W

Claim:
1. A system comprising: a Radio Equipment, RE, configured to transmit a chirped sine wave signal from the RE to a Radio Equipment Controller, REC, on an uplink data path from the RE to the REC where the uplink data path traverses one or more nodes between the RE and the REC in a cascade arrangement, the one or more nodes comprising at least one of a group consisting of one or more additional REs and one or more additional RECs; and the REC configured to: receive a signal on the uplink data path from the RE, the signal comprising the chirped sine wave signal transmitted from the RE to the REC on the uplink data path; sample the received signal on the uplink data path to thereby provide samples of the received signal, the received signal comprising the samples of the chirped sine wave signal transmitted from the RE to the REC on the uplink data path; correlate a reference chirped sine wave signal and the samples of the received signal from the RE on the uplink data path, the received signal comprising the chirped sine wave signal; and determine an uplink data path delay from the RE to the REC based on results of the correlation of the reference chirped sine wave signal and the samples of the received signal from the RE on the uplink data path.