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Method for sending and receiving redundancy version parameters of hybrid automatic retransmission

A hybrid automatic retransmission and redundant version technology, applied in the field of communication, can solve the problem of consuming bit transmission power and achieve the effect of reducing bandwidth overhead

Inactive Publication Date: 2010-02-10
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: RV occupies 2 bits, NDI occupies 1 bit, and RV and NDI information is sent on the air interface every 1 millisecond; then RV and NDI information occupy a bandwidth of 3,000 bits per second, and consume the transmission power of the corresponding bit

Method used

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  • Method for sending and receiving redundancy version parameters of hybrid automatic retransmission
  • Method for sending and receiving redundancy version parameters of hybrid automatic retransmission
  • Method for sending and receiving redundancy version parameters of hybrid automatic retransmission

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Embodiment Construction

[0038] In air interface design, the use of each bit needs special consideration to reduce unnecessary bandwidth overhead and unnecessary transmit power overhead.

[0039] The core idea of ​​the present invention is to use the redundancy version (RV) to replace the new data indicator (NDI) in the hybrid automatic repeat request process, and to distinguish new data and retransmission data through the redundancy version (RV), and no longer use the new data indicator (NDI). Data indication (NDI), so as to save the transmission of the NDI bit on the air interface, so as to reduce the bandwidth overhead of the air interface and the transmission power overhead of the air interface.

[0040] The present invention will be described in detail below with reference to the drawings and embodiments.

[0041] figure 2 It is a schematic diagram of the method of using RV parameters in the embodiment of the present invention. In this embodiment, it is assumed that the available RV set is {0,...

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Abstract

The invention relates to a method for sending redundancy version parameters of hybrid automatic retransmission. A sending end sets a redundancy version RV parameter value of first transmission data as0 and sets an RV value of retransmission data as a non-zero value in an available RV set; and a receiving end takes a data packet in which the RV value is 0 as a first transmission data packet for processing, and takes the data packet in which the RV value is the non-zero value in the available RV set as a retransmission data packet for processing. The method distinguishes the first transmissiondata and the retransmission data by RV parameters, and does not use NDI so as to save the transmission of the bit of the NDI at an air interface and reduce the bandwidth overhead and transmission power overhead of the air interface.

Description

technical field [0001] The invention relates to the communication field, in particular to a hybrid automatic retransmission redundant version parameter sending and receiving method. Background technique [0002] HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic retransmission) is a link adaptive technology. When the receiving end exceeds its own error correction capability, it quickly requests the sending end to resend the wrong data block, so it can automatically adapt to changes in channel conditions. And it is not sensitive to measurement error and time delay. The existing HARQ technology adds a redundancy mechanism: the receiving end combines the data transmitted multiple times before decoding. The retransmission data contains both redundant and systematic bits, which can be self-decoded. [0003] The HARQ function consists of two stages of rate matching sub-blocks and a buffer. The first rate matching sub-module matches the input bit with the soft buffer capaci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/22
Inventor 程翔
Owner ZTE CORP
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