METHOD AND APPARATUS FOR H-ARQ IN A WIRELESS COMMUNICATION SYSTEM
First Claim
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1. A method for implementing automatic repeat request (ARQ) for data transmission in a communication apparatus, comprises the following steps:
- (a) monitoring a channel quality value between said communication apparatus and a network device;
(b) comparing said channel quality value with a predefined threshold to obtain a comparison result; and
(c) executing the following steps if said channel quality value is not worse than said predefined threshold;
(c1) monitoring if the current transmission condition is normal; and
(c2) sending a request message to said network device for adjusting said transmission condition if said transmission condition is abnormal.
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Abstract
The present invention discloses an H-ARQ scheme: In the case of wireless channel is in good condition, user equipment will send NACK signals and other control information only when it has received an incorrect data packet, otherwise the user equipment will not send ACK signals; in the case of wireless channel is in bad condition, existing H-ARQ schemes will be adopted.
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Citations
19 Claims
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1. A method for implementing automatic repeat request (ARQ) for data transmission in a communication apparatus, comprises the following steps:
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(a) monitoring a channel quality value between said communication apparatus and a network device; (b) comparing said channel quality value with a predefined threshold to obtain a comparison result; and (c) executing the following steps if said channel quality value is not worse than said predefined threshold; (c1) monitoring if the current transmission condition is normal; and (c2) sending a request message to said network device for adjusting said transmission condition if said transmission condition is abnormal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communication apparatus for performing ARQ, comprises:
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a transmitting means for transmitting uplink data to a network device; a monitoring means for monitoring the channel quality value between said network device; a comparing means for comparing said channel quality value with a predefined threshold to obtain a comparison result; a controlling means for controlling said monitoring means to monitor whether the transmission condition is normal when said channel quality value is not worse than said predefined threshold, and controlling said transmitting means to send a request message to said network means if the transmission condition is abnormal. - View Dependent Claims (9, 10, 11, 12)
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13. A method for implementing ARQ for data transmission in network device, comprises the following steps:
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(a) receiving the state switch inform message from a communication apparatus; and (b) adjusting the current transmission condition if said state switch inform message indicates that said channel quality value between said communication means and said network means is not worse than a predefined threshold and there is a request message received which is from said communication apparatus. - View Dependent Claims (14, 15, 16)
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17. A network device for performing ARQ, comprises:
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a receiving means for receiving state switch inform message from a communication apparatus; a transmitting means for transmitting downlink data to said communication apparatus; a controlling means for adjusting the transmission condition of said transmitting means if said state switch inform message indicates that said channel quality value between said communication apparatus and said network device is not worse than a predefined threshold and there is a request message received which is from said communication device. - View Dependent Claims (18, 19)
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Specification