INDIVIDUALIZED GAIN CONTROL OF UPLINK PATHS IN REMOTE UNITS IN A DISTRIBUTED ANTENNA SYSTEM (DAS) BASED ON INDIVIDUAL REMOTE UNIT CONTRIBUTION TO COMBINED UPLINK POWER
First Claim
1. A central gain control system for providing individualized gain control of at least one uplink path in remote units in a distributed antenna system (DAS) based on an individual remote unit contribution to a combined uplink power, comprising:
- a central uplink power measurement circuit coupled to a central uplink path in a central unit carrying a combined uplink communications signal comprised of a combined plurality of received uplink communications signals from a plurality of remote units, the central uplink power measurement circuit configured to;
measure a combined uplink power of the combined uplink communications signal; and
provide a combined uplink power measurement indicative of the combined uplink power of the combined uplink communications signal; and
a central controller configured to;
(a) receive the combined uplink power measurement indicative of the combined uplink power of the combined uplink communications signal;
(b) receive individual remote uplink power measurements of a remote uplink power for each remote uplink path of the plurality of remote units; and
(c) determine if the combined uplink power measurement is greater than a central uplink threshold power level;
(d) if the combined uplink power measurement is greater than the central uplink threshold power level;
identify as a high power remote uplink path, at least one remote uplink path in at least one remote unit among the plurality of remote units that has an individual remote uplink power measurement above a remote uplink threshold power level; and
direct a remote uplink gain control circuit for at least one remote uplink path identified as a high power remote uplink path in at least one remote unit among the plurality of remote units, to reduce the uplink gain of the respective remote uplink path by a defined remote uplink gain level reduction.
2 Assignments
0 Petitions
Accused Products
Abstract
Individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to combined uplink power is disclosed. The gain level is reduced for uplink paths of individual remote units that provide higher power contribution to the combined uplink power of a combined uplink communications signal received in the central unit. This allows the initial uplink gain of all remote units to be set higher to increase sensitivity, because the gain of the remote units that provide higher power contributions to the combined uplink power in the central unit can be reduced if the combined uplink power exceeds the desired threshold power level. The gain of the remote units that provide higher power contributions to the combined uplink power in the central unit can be reduced without reducing the gain in the other remote units that would otherwise reduce their sensitivity.
32 Citations
33 Claims
-
1. A central gain control system for providing individualized gain control of at least one uplink path in remote units in a distributed antenna system (DAS) based on an individual remote unit contribution to a combined uplink power, comprising:
-
a central uplink power measurement circuit coupled to a central uplink path in a central unit carrying a combined uplink communications signal comprised of a combined plurality of received uplink communications signals from a plurality of remote units, the central uplink power measurement circuit configured to; measure a combined uplink power of the combined uplink communications signal; and provide a combined uplink power measurement indicative of the combined uplink power of the combined uplink communications signal; and a central controller configured to; (a) receive the combined uplink power measurement indicative of the combined uplink power of the combined uplink communications signal; (b) receive individual remote uplink power measurements of a remote uplink power for each remote uplink path of the plurality of remote units; and (c) determine if the combined uplink power measurement is greater than a central uplink threshold power level; (d) if the combined uplink power measurement is greater than the central uplink threshold power level; identify as a high power remote uplink path, at least one remote uplink path in at least one remote unit among the plurality of remote units that has an individual remote uplink power measurement above a remote uplink threshold power level; and direct a remote uplink gain control circuit for at least one remote uplink path identified as a high power remote uplink path in at least one remote unit among the plurality of remote units, to reduce the uplink gain of the respective remote uplink path by a defined remote uplink gain level reduction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 33)
-
-
11. A method of providing individualized gain control of uplink paths in remote units in a distributed antenna system (DAS) based on individual remote unit contribution to a combined uplink power, comprising:
-
(a) measuring a combined uplink power of combined uplink communications signal comprised of a combined plurality of uplink communications signals received from a plurality of remote units; (b) providing a combined uplink power measurement indicative of the combined uplink power of the combined uplink communications signal; (c) receiving individual remote uplink power measurements of a remote uplink power for each remote uplink path of the plurality of remote units; (d) determining if the combined uplink power measurement is greater than a central uplink threshold power level; and (e) if the combined uplink power measurement is greater than a central uplink threshold power level; identifying as a high power remote uplink path, all remote uplink paths in at least one remote unit among the plurality of remote units that have an individual remote uplink power measurement above a remote uplink threshold power level; and directing a remote uplink gain control circuit for the remote uplink path identified as a high power remote uplink path in each remote unit among the plurality of remote units, to reduce the uplink gain of the respective remote uplink path by a defined remote uplink gain level reduction. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20-32. -32. (canceled)
Specification