HYBRID AUTOMATIC REPEAT REQUEST MANAGEMENT METHOD FOR IMPROVING TRANSMISSION QUALITY
First Claim
1. A method of managing at least one Hybrid Automatic Repeat reQuest (HARQ) process in a wireless communications system, comprising;
- determining a priority of the HARQ process according to a transmission success rate of the HARQ process;
determining a priority of a data unit to be transmitted; and
transmitting the data unit according to the priority of the data unit and the priority of the HARQ process.
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Accused Products
Abstract
The present invention to provide methods and related controllers that manage HARQ processes in a wireless communications system. The present invention provides a method and related controller to map data units (e.g. PDU) of importance that is to be transmitted to a HARQ process having a higher transmission success rate to prevent the data units from being transmitted via a HARQ process having more transmission failures. In addition, the present invention also provides a method and a related controller to force a HARQ process to retransmit a data unit that has been correctly received by a receiving end to reduce the latency of retransmission caused by a possible transmission failure occurring between a MAC layer and a RLC layer at the receiving end.
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Citations
21 Claims
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1. A method of managing at least one Hybrid Automatic Repeat reQuest (HARQ) process in a wireless communications system, comprising;
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determining a priority of the HARQ process according to a transmission success rate of the HARQ process; determining a priority of a data unit to be transmitted; and transmitting the data unit according to the priority of the data unit and the priority of the HARQ process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of managing at least one Hybrid Automatic Repeat reQuest (HARQ) process in a wireless communications system, comprising:
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determining whether a number of HARQ acknowledgement (ACK)-to-Radio Link Control (RLC) negative acknowledgement (NACK) errors occurred on the HARQ process reaches a threshold; and when the number of the HARQ ACK-to-RLC NACK errors occurred on the HARQ process reaches the threshold, configuring the HARQ process to perform at least one retransmission of a data unit even if a HARQ ACK corresponding to the data unit has been received. - View Dependent Claims (16, 17, 18, 19)
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20. A controller of managing at least one Hybrid Automatic Repeat reQuest (HARQ) process in a wireless communications system, comprising;
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a first determination module, arranged to determine a priority of the HARQ process according to a transmission success rate of the HARQ process; a second determination module, arranged to determine a priority of a data unit to be transmitted; and a configuration module, coupled to a first determination module and the second determination module, arranged to transmit the data unit according to the priority of the data unit and the priority of the HARQ process.
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21. A controller of managing at least one Hybrid Automatic Repeat reQuest (HARQ) process in a wireless communications system, comprising:
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a determination module, arranged to determine whether a number of HARQ acknowledgement (ACK)-to-Radio Link Control (RLC) negative acknowledgement (NACK) errors occurred on the HARQ process reaches a threshold; and a configuration module, coupled to the determination module, when the number of the HARQ ACK-to-RLC NACK errors occurred on the HARQ process reaching the threshold, arranged to configure the HARQ process to perform at least one retransmission of a data unit even if a HARQ ACK corresponding to the data unit has been received.
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Specification