Method and apparatus for transmitting acknowledgement signals
First Claim
1. A method for a user equipment (UE) to transmit a feedback signal in a communication system, the method comprising:
- receiving data from a base station; and
transmitting the feedback signal to the base station via a specific channel with a specific transmission power, wherein a type of the feedback signal is an acknowledgement (ACK) when the data from the base station is received without error, and the type of the feedback signal is a negative acknowledgement (NACK) when the data from the base station is received with error, andwherein the specific transmission power for the specific channel is determined according to whether the type of the feedback signal is the ACK or the NACK.
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Abstract
The present invention relates to a power controlling method in a mobile radio communication system using Automatic Repeat reQuest (ARQ) scheme, and more particularly to a power controlling method of response (ACK/NACK) signals for transmitting the ACK/NACK signals in different power based on the permissible probabilities of reception error that the system requires. When the ACK/NACK signals are transmitted and received in the automatic repeat request (ARQ) system, since the ACK/NACK signals can be transmitted in accordance with the transmission power satisfying an error rate required in each signal by differentiating the transmission power of the signal according to each ACK/NACK, the power consumption required in the transmission of the ACK/NACK signals can be reduced.
20 Citations
6 Claims
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1. A method for a user equipment (UE) to transmit a feedback signal in a communication system, the method comprising:
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receiving data from a base station; and transmitting the feedback signal to the base station via a specific channel with a specific transmission power, wherein a type of the feedback signal is an acknowledgement (ACK) when the data from the base station is received without error, and the type of the feedback signal is a negative acknowledgement (NACK) when the data from the base station is received with error, and wherein the specific transmission power for the specific channel is determined according to whether the type of the feedback signal is the ACK or the NACK. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification