Adaptive Fragmentation for HARQ in Wireless OFDMA Networks
First Claim
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1. A method for performing a hybrid automatic repeat-request (HARQ) operation in a wireless orthogonal frequency division multiple access network, comprising:
- estimating dynamically an error metric of a channel between a transmitter and a receiver; and
fragmenting adaptively a packet for the HARQ operation at the transmitter according to the error metric estimated dynamically.
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Abstract
A method performs a hybrid automatic repeat-request (HARQ) operation in a wireless orthogonal frequency division multiple access (OFDMA) network. A quality of a channel between a transmitter and a receiver is estimated as an error metric. A packet for the HARQ operation is fragmented adaptively at the transmitter according to the estimated error metric. The fragmentation is performed at the HARQ layer when the error metric is less than a predetermined threshold, otherwise the fragmentation is performed at the MAC layer.
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13 Claims
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1. A method for performing a hybrid automatic repeat-request (HARQ) operation in a wireless orthogonal frequency division multiple access network, comprising:
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estimating dynamically an error metric of a channel between a transmitter and a receiver; and fragmenting adaptively a packet for the HARQ operation at the transmitter according to the error metric estimated dynamically. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for performing a hybrid automatic repeat-request (HARQ) operation in a wireless orthogonal frequency division multiple access network, comprising:
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fragmenting a packet at a HARQ layer of an open systems interconnection model when an error metric of a channel between a transmitter and receiver is less than a predetermined threshold; and fragmenting the packet at a MAC layer of the open systems interconnection model when the error metric is greater than the predetermined threshold.
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Specification