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Wireless communication device and wireless communication method

A wireless communication device, a technology of information bits, applied in the direction of error prevention/detection using return channel, digital transmission system, error prevention, etc., can solve the problem that the function of HARQ error correction cannot be fully utilized, the difficulty of parity check section synthesis, etc. question

Active Publication Date: 2021-08-20
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the combination of the parity part becomes difficult, and the error correction function in HARQ cannot be fully utilized.

Method used

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  • Wireless communication device and wireless communication method
  • Wireless communication device and wireless communication method
  • Wireless communication device and wireless communication method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0094] image 3 It is a block diagram showing the functions of the wireless communication device 1 according to this embodiment. The wireless communication device 1 includes a transmission block 10 , a reception block 20 , a control unit 30 , and a wireless unit 40 .

[0095] The transmission block 10 includes a frame division unit 100, a block coding unit 101, a coded frame generation unit 102, a frame aggregation unit 103, a PHY header generation unit 104, a transmission unit 105, and a transmitted data storage unit 106. Encode and transmit the generated send packet data.

[0096] The processing in each block may be performed by software (program) operating on a processor such as a CPU, may be performed by hardware, or may be performed by both software and hardware. In addition, the processing in each block may be performed by analog processing, may be performed by digital processing, or may be performed by both analog processing and digital processing.

[0097] The frame...

no. 2 Embodiment approach

[0151] In the above-mentioned embodiment, the generation example of transmission packet data in the HARQ of the CC method is mainly used, but not only the CC method but also the IR method by inserting padding is effective in improving signal reception sensitivity. Hereinafter, the case of the IR method will be described.

[0152] In the case of the IR method, in the retransmission frame, part or all of the parity bits are regenerated in the redundantly coded bit string. In such a case, for example, the encoding in the retransmission frame is performed in the same manner as that of the initial transmission frame, and the encoding rate is lower than that of the initial transmission frame, that is, encoding with an increased number of error correction bits is used.

[0153] use Figure 7 The flow chart of , will describe the coding related to this embodiment. The same processing as that in the first embodiment is performed for the coding of the initial transmission packet or th...

no. 3 Embodiment approach

[0160] In each of the above-mentioned embodiments, it has been described that data of other frames are not included in the same block when generating codewords by inserting padding bits so that the blocks have the same size, and the boundary between the transmitted frames and the The boundaries of codewords are consistent, but this embodiment will further improve communication efficiency.

[0161] Figure 11 It is a diagram schematically showing the PHY data 550 of the transmission packet according to this embodiment. Should Figure 11 send with Image 6 The data in the equivalent data. Will Image 6 and Figure 11 For comparison, codewords 801, 802, 803, 805 are the same, but in Image 6 codewords 804, 806 and Figure 11 There are differences in the codewords 804', 806' of .

[0162] The codewords 804 and 806 directly store stuffing bits as a transmission frame, but the codewords 804' and 806' do not include stuffing bits, and are configured with an information bit st...

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Abstract

The present invention provides a wireless communication device and a wireless communication method. Provided is a wireless communication device capable of improving the error correction rate of HARQ even in the case of frame aggregation. A wireless communication device according to one embodiment includes a frame division unit, a block encoding unit, a coded frame generation unit, a coded frame aggregation unit, and a transmission unit. The frame dividing unit divides the frame data into a first predetermined number of bits, and when the first predetermined number of bits is not satisfied, stuffing bits are added to form a block. The block encoding unit generates an encoded block in which an error correction bit string to which a second predetermined number of bits is added is added to the block. The coded frame generation unit combines the coded blocks to generate a coded frame. The encoded frame aggregation unit aggregates the encoded frames to generate transmission packet data. The transmission unit transmits the transmission packet data.

Description

[0001] This application is based on Japanese Patent Application No. 2017-160431 (filing date: August 23, 2017), and priority is claimed based on this application. This application is incorporated by reference in its entirety in its entirety. technical field [0002] Embodiments of the present invention relate to a wireless communication device and a wireless communication method. Background technique [0003] Hybrid Automatic Repeat Request (HARQ: Hybrid Automatic Repeat Request) is known as a technique for improving bandwidth utilization in wireless communication. This HARQ is one of error control techniques used in wireless communication, and uses automatic repeat control (ARQ) and forward error correction (FEC: Forward Error Correction) in combination. A method of using block-coded data in order to realize HARQ has also been developed. [0004] In HARQ, frames of encoded data can also be aggregated and transmitted. However, when encoded data is frame-aggregated (frame ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/18
CPCH04L1/0042H04L1/1816H04L1/0083H04L1/1812H04L1/1845H04L1/188H04L1/0041H04L1/0045H04L1/0058H04L1/1861H04L69/22H04L1/1893
Inventor 谷口健太郎锅谷寿久关谷亮太
Owner KK TOSHIBA
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