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Adaptive weighted HARQ (hybrid automatic repeat request) combination method and device

An adaptive weighting and hybrid automatic technology, applied in the field of communication, can solve the problems of the maximum number of bits is not constant, the data success rate is small, and the code rate of the initial transmission data and the retransmission data are different.

Inactive Publication Date: 2012-07-18
HUAWEI TECH CO LTD
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Problems solved by technology

[0009] In the process of implementing the above adaptive weighted HARQ combination, since the state of the channel used to transmit the initial transmission data and the retransmission data is not constant, the maximum number of bits that the channel can carry is also not constant. As a result, the bit rate of the initial transmission data and the retransmission data may be different
If the code rate of the retransmitted data is greater than the code rate of the initially transmitted data, the number of accumulated retransmitted data at the receiving end is less than the accumulated number of initially transmitted data during the HARQ combining process, causing the receiving end to decode the accumulated data less success rate

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  • Adaptive weighted HARQ (hybrid automatic repeat request) combination method and device
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  • Adaptive weighted HARQ (hybrid automatic repeat request) combination method and device

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0027] This embodiment provides a method for adaptive weighted hybrid automatic request retransmission merging, such as figure 1 shown, including the following steps:

[0028] 101. Receive retransmission data.

[0029] The data received by the receiving end for the first time may be referred to as initial transmission data, and the corresponding data received after the initial transmission data may be referred to as retransmission data. If decoding of the initial ...

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Abstract

The invention provides an adaptive weighted HARQ (hybrid automatic repeat request) combination method and an adaptive weighted HARQ combination device, relates to the field of communication techniques, and solves the problem that under the condition that the code rate of requested data is higher than the code rate of to-be-decoded data subjected to decoding failure, a receiving end after receiving the requested data is low in success rate of data decoding. The method specially comprises the following steps of: receiving requested data; multiplying the requested data by a combined weight value so as to obtain a product, adding the product and to-be-decoded data subjected to decoding failure together so as to obtain data subjected to adding, and updating the to-be-decoded data into the data subjected to adding, so that the combined weight value is greater than the ratio of the code rate of the requested data to the code rate of the to-be-decoded data subjected to decoding failure; and carrying out decoding on the updated to-be-decoded data. The method and device disclosed by the invention can be applied to adaptive weighted HARQ combination.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for adaptive weighted hybrid automatic retransmission request combination. Background technique [0002] In a communication system, after the receiving end receives the data sent by the sending end, it first decodes the received data. However, in some cases, the data transmitted to the receiving end is damaged due to the interference of the channel, so that the receiving end fails to decode the data. [0003] In the prior art, in the LTE (Long Term Evolution, long-term evolution) system, through AMC (Adaptive Modulation and Coding, adaptive modulation and coding) technology and HARQ (Hybrid-Automatic Repeat-reQuest, hybrid automatic retransmission) technology To increase the decoding success rate of the receiving end. [0004] By adopting AMC technology, before each sending end sends data, the sending end adjusts the modulation mode of the data and th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00
Inventor 孙宇佳
Owner HUAWEI TECH CO LTD
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