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Wireless communication device and wireless communication method

A wireless communication device and a technology of one party are applied in the directions of wireless communication, signaling allocation, transmission path sub-channel allocation, etc., and can solve problems such as increased overhead, increased PHY header information, and degraded communication efficiency.

Active Publication Date: 2019-03-05
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the above example, since the scrambled initial value and target address information are always stored in the PHY header, the amount of information in the PHY header increases.
As a result, there are problems such as increase in overhead and deterioration of communication efficiency

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

[0125] The wireless communication device 1 of the present embodiment stores information required for HARQ processing in the PHY header 500 which is the head of the packet, and when receiving packet data, quickly judges whether the packet data is heavy or not. The processing of the transmission packet advances the timing of the preprocessing for performing the likelihood synthesis, and further, the likelihood synthesis is performed in a sufficiently timely manner within the SIFS time.

[0126] Figure 5 It is a figure which shows the storage place of the flag which shows that it is a retransmission packet in this embodiment. Figure 5 (a) is a diagram showing the data structure in the initial transmission packet, Figure 5 (b) is a diagram showing a data structure in a retransmission packet having a retransmission flag. In addition, below, in the figure of a data structure, the ratio of the length does not represent the ratio of the actual data length. Comparing these figure...

no. 2 Embodiment approach

[0144] In the first embodiment above, it is determined whether the received packet data is an initial transmission packet or a retransmission packet by setting the retry field in the PHY header, but in this embodiment, the initial transmission The modulation methods of the information packet and the retransmission packet are set to different modulation methods to determine whether the received packet data is the packet data related to the initial transmission packet or the information packet data related to the retransmission packet.

[0145] Figure 7 It is a figure showing a part of the structure of the packet data of this embodiment. Figure 7 (a) is a graph related to the initial information packet, Figure 7 (b) is a diagram related to retransmission packets.

[0146] Such as Figure 7 As shown in (a), in the initial transmission packet, the first signal field 512 of the first PHY header 510 is modulated by a first modulation method, such as BPSK (Binary Phase Shift ke...

no. 3 Embodiment approach

[0154] In each of the above-mentioned embodiments, it has been described that only one MAC frame is provided for each PHY header without performing frame aggregation, but the present invention is not limited thereto. That is, the above-described embodiment can also be applied to packet data including a plurality of MAC frames.

[0155] Figure 8 It is a diagram showing the structure of frame-aggregated packet data. For example, in the Figure 8 (a) and Figure 8 In (b), the aggregated data of three MAC frames is used for communication as packet data. In wireless packet communication, one packet may be composed of a plurality of data units called MAC frames in this way.

[0156] Figure 8 (a) is a diagram showing an example of the configuration of an initial transmission packet including three MAC frames. The initial transmission frame has a first PHY header 510, for example, a MAC header 601 and a payload 651 constituting a first MAC frame, a MAC header 602 and a payload...

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PUM

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Abstract

The invention relates to a wireless communication device and a wireless communication method. The wireless communication device inhibits the increasing of expense to the minimum and achieves HARQ. Thewireless communication device comprises a sending part, which sends information packet data including at least a PHY header and payload. Under the situation that the information packet data does notcontain re-sending data, a first PHY header is used as the PHY header to be sent. Under the situation that the information packet data contains the re-sending data, a second PHY header having more information quantity than that of the first PHY header is used as the PHY header to be sent.

Description

[0001] This application is based on Japanese Patent Application No. 2017-158590 (filing date: August 21, 2017), and priority is enjoyed based on this application. This application, by reference to this application, includes the entire contents of this application. technical field [0002] Embodiments of the present invention relate to a wireless communication device and a wireless communication method. Background technique [0003] A hybrid automatic repeat request (HARQ: Hybrid Automatic Repeat Request) is known in which reliability information of a packet to be retransmitted from a transmitter (like Likelihood information) is combined with the likelihood information of the first received packet to improve the retransmission of the signal quality. In error correction using HARQ in wireless communication, required information is stored in, for example, a PHY (Physical Layer, physical layer) header. More specifically, the reliability of the scrambling process is improved by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00
CPCH04L1/0042H04L1/1816H04L1/1819H04L1/1896H04L27/18H04L5/0055H04L1/1812H04W84/12H04W72/0453H04W88/08
Inventor 谷口健太郎锅谷寿久关谷亮太
Owner KK TOSHIBA
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