Mobile station closed loop output power stability system for weak signal conditions
AssigneeOki Telecom, Inc.
InventorsKaiping Li, Chung-yen Ong
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Abstract
A power control system is implemented within a mobile communications system to prevent erroneous power fluctuations by a mobile station when the power of signals communicated between the mobile station and a base station becomes so weak that the mobile station would otherwise erroneously interpret power control signals communicated from the base station to the mobile station. By configuring the mobile station to ignore power control signals communicated by the base station when a received signal strength is below a power control threshold, erroneous changes in power output can be prevented and the overall performance of the communication system can be increased.
Claims21
A power control method for preventing erroneous power changes in a mobile communications system, said method comprising steps of:
- storing a power control threshold at a mobile station;
- receiving power control signals at said mobile station;
- determining a received signal strength at said mobile station;
- comparing said received signal strength with said power control threshold;
- and
- controlling output power of said mobile station according to said power control signals only when said received signal strength is above said power control threshold.
A power control system for preventing erroneous power changes in a mobile communications system, comprising:
- means for storing a power control threshold at a mobile station;
- means for receiving power control signals at said mobile station;
- means for determining a received signal strength at said mobile station;
- means for comparing said received signal strength with said power control threshold;
- and
- means for ignoring said power control signals at said mobile station when said received signal strength is below said power control threshold.
A power control system for preventing erroneous power changes in a mobile communications system, comprising:
- a mobile station memory configured to store a power control threshold at a mobile station;
- a power control signal receiver configured to receive power control signals at said mobile station;
- a mobile station received signal strength detector;
- a comparator configured to compare said received signal strength with said power control threshold;
- and
- an output power controller configured to ignore said power control signals at said mobile station when said received signal strength is below said power control threshold.
Dependencies are inferred from the claim text.