Method of reverse link dynamic power control in a wireless communication system using quality feedback from a delay-sensitive traffic stream or overhead channel
AssigneeAlcatel-Lucent USA Inc.
InventorsSubramanian Vasudevan, Jialin Zou
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Abstract
A closed loop power control based on receiving a continuous quality feedback is described. A main reverse link (RL) pilot is controlled by the quality feedback of a substantially continuous delay-sensitive traffic stream, such as Voice-over-IP (VoIP), when such a stream is enabled. When such a stream is not enabled, the quality of a continuous RL overhead channel is used to control the pilot power. At the same time, the Traffic-to-Pilot Ratios (TPR) of contemporaneously transmitted delay-sensitive data streams are independently adjusted based on a quality feedback associated with each such data stream.
Claims19
A method in a wireless communication system in which an access terminal (AT) communicates with a base transceiver station (BTS) over a reverse link (RL) and a forward link (FL), the method comprising:
- at the AT:
- if a delay-sensitive traffic stream is enabled on the RL, dynamically controlling the power of a main RL pilot in response to a quality indication feedback received on the FL of the delay-sensitive traffic stream received by the BTS;
- and
- if a delay-sensitive traffic stream is not enabled on the RL, dynamically controlling the power of the main RL pilot in response to a quality indication feedback received on the FL of a signal continuously transmitted on the RL on an overhead channel.
A method in a wireless communication system in which an access terminal (AT) communicates with a base transceiver station (BTS) over a reverse link (RL) and a forward link (FL), the method comprising:
- at the BTS:
- transmitting a quality indication on the FL wherein if a delay-sensitive traffic stream is enabled on the RL, the quality indication comprises a determined quality of a packet in a delay-sensitive traffic stream received from the AT, and if the delay-sensitive traffic stream is not enabled on the RL, the quality indication comprises a determined quality of a word in a stream of words continuously received from the AT on the RL on an overhead channel.
Dependencies are inferred from the claim text.