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HARQ (Hybrid Automatic Repeat Request) retransmission method and equipment based on convolutional turbo coding

A coding method, convolutional technology, applied in error prevention/detection using return channel, network traffic/resource management, electrical components, etc., can solve the problem of unknown demarcation point, ideal secondary retransmission performance, type III HARQ coding Combined consideration with modulation and other issues to achieve the effect of improving robustness

Inactive Publication Date: 2014-11-26
SAMSUNG ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] Since the traditional Type III HARQ transmission mechanism does not consider coding and modulation jointly, the performance of its second retransmission is not ideal
In addition, since the traditional method of the second retransmission uses two modulation mapping methods, if the mapping of the frame is wrongly transmitted, the second retransmission cannot obtain the mapping method of the second retransmission, and the two mapping methods are not known at the same time. cut-off point

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  • HARQ (Hybrid Automatic Repeat Request) retransmission method and equipment based on convolutional turbo coding
  • HARQ (Hybrid Automatic Repeat Request) retransmission method and equipment based on convolutional turbo coding
  • HARQ (Hybrid Automatic Repeat Request) retransmission method and equipment based on convolutional turbo coding

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Embodiment Construction

[0034] According to the characteristics of CTC encoding and decoding, the present invention proposes an IR HARQ transmission method. The following will refer to Figure 4-8 The CTC-based HARQ retransmission method according to the present invention will be described in detail.

[0035] first reference Figure 4 and Figure 5 The operation of the transmitter according to the present invention will be described. Figure 4 is a block diagram showing a transmitter according to the present invention. like Figure 4 As shown, the transmitter may include a CTC encoding module, a modulation module, a multi-antenna transmission processing module, a pilot signal insertion module, an IFFT transformation module and a transmission antenna. Wherein, the CTC coding module is used to perform convolution Turbo coding on the information bits to obtain coded bits. The modulation module maps the coded bits to a modulation constellation diagram to obtain modulated symbols. The multi-antenna...

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Abstract

The invention relates to an HARQ (Hybrid Automatic Repeat Request) retransmission method which comprises the following steps of: coding information to be transmitted into parts of information bit, retained check bit and deleted check bit by utilizing a convolutional Turbo coding method; and aiming at the first transmission and the following n retransmissions of parts of the information bit to be transmitted, the retained check bit and the deleted check bit, modulating the corresponding parts to be transmitted on every two continuous transmissions respectively by adopting different modulation mapping ways and emitting a modulated signal, wherein n is an integer which is larger than or equal to zero. The performance of a transmission mechanism of the invention is better than that of the traditional HARQ transmission mechanism III, meanwhile, the robustness during transmission is improved.

Description

technical field [0001] The present invention relates to wireless mobile communication, more specifically, to a HARQ retransmission method and equipment based on convolutional turbo coding Background technique [0002] With the development of wireless services, HARQ is playing an increasingly critical role in the field of wireless communications. There are two main reasons for this: First, future wireless services will mostly be asymmetrical and bursty packet data services, which have low requirements on delay but high requirements on the quality of transmitted data. Second, the wireless propagation environment is very complex. For the received signal, there are not only various fading and Doppler shift caused by movement, but also various interferences and noises. These fading and interference are easy to cause random errors and burst errors, which will seriously affect the transmission quality. [0003] The HARQ technology, also known as hybrid automatic repeat request, ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04W28/04
Inventor 周雷郑旭峰赵铮
Owner SAMSUNG ELECTRONICS CO LTD