SYSTEM-WIDE UPLINK BAND GAIN CONTROL IN A DISTRIBUTED ANTENNA SYSTEM (DAS), BASED ON PER-BAND GAIN CONTROL OF REMOTE UPLINK PATHS IN REMOTE UNITS

摘要

System-wide uplink band gain control in a distributed antenna system (DAS) based on per-band gain control of remote uplink paths in remote units is disclosed. In one embodiment, for each uplink band in the DAS, a gain control system receives remote uplink band power measurements for each remote uplink path for the uplink band. Based on these power measurements, the gain control system determines if the uplink gain of all of the remote uplink paths of the plurality of uplink paths of the uplink band should be adjusted. If the uplink gain of the remote uplink paths of the uplink band should be adjusted, the gain control system directs a remote uplink gain control circuit for each remote uplink path of the uplink band to adjust the uplink gain by a defined remote uplink band gain level.

主权项

1. A gain control system for providing system-wide uplink band gain control in a distributed antenna system (DAS), based on per-band gain control of remote uplink paths in remote units, comprising:
a plurality of remote units, each comprising:
a plurality of remote uplink band power measurement circuits each coupled to a remote uplink path among a plurality of remote uplink paths each carrying at least one uplink band communications signal in a remote unit, each remote uplink band power measurement circuit among the plurality of remote uplink band power measurement circuits configured to:
measure a remote uplink band power of an uplink band communications signal in the remote uplink path in the remote unit; andprovide a remote uplink band power measurement indicative of the measured remote uplink band power of the uplink band communications signal in the remote uplink path; and a central controller configured to, for each uplink band in the DAS:
(i) receive the remote uplink band power measurement for each remote uplink path for the uplink band;(ii) determine if an uplink gain of the remote uplink paths of the plurality of remote uplink paths of the uplink band should be adjusted; and(iii) if the uplink gain of the remote uplink paths of the uplink band should be adjusted:
direct a remote uplink gain control circuit for each remote uplink path of the uplink band, to adjust the uplink gain of the respective remote uplink path by a defined remote uplink band gain level.