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Wireless transmission device, wireless reception device, wireless system and wireless transmission method

A technology of wireless transmission and transmission unit, which is applied in the field of wireless transmission devices and can solve problems such as clients that cannot receive data

Active Publication Date: 2021-04-09
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, it is difficult to transmit a large amount of data in a short time using a modulation method with a low transmission speed, and a client that cannot receive data tends to occur when a modulation method with a high transmission speed is used to transmit

Method used

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  • Wireless transmission device, wireless reception device, wireless system and wireless transmission method
  • Wireless transmission device, wireless reception device, wireless system and wireless transmission method
  • Wireless transmission device, wireless reception device, wireless system and wireless transmission method

Examples

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no. 1 Embodiment approach

[0032] figure 1 It is a diagram showing an example of a wireless communication system according to an embodiment of the present invention. The wireless communication system includes a sending device 1 , one or more receiving terminals 2 and a delivery server 3 . The transmission device 1 is, for example, a wireless LAN access point, and is one form of a wireless transmission device capable of transmitting a plurality of frames in accordance with IEEE802.11. Contains multiple broadcast frames within multiple frames. In particular, a radio communication system effective when broadcast transmission is performed using radio will be described below.

[0033] One or more receiving terminals 2 each include a wireless LAN client. The receiving terminal 2 is, for example, a personal computer or a smart phone, and can communicate with a wireless LAN access point in accordance with IEEE802.11. The receiving terminal 2 is one form of a wireless receiving device. The delivery server 3...

no. 2 Embodiment approach

[0076] In the first embodiment, the transmitting device 1 transmits the same data or data based on the same data by a plurality of modulation methods, but in the second embodiment, different data are modulated by a plurality of modulation methods, and by broadcast to send. The differences from the first embodiment will be mainly described below. There is no difference in that the transmission device 1 has the control unit 11 , the memory 12 , the scheduler 13 , and the transmission unit 14 , so description thereof will be omitted. In addition, since there is no major difference in the configuration of the receiving terminal 2, description thereof will be omitted.

[0077] In the second embodiment, the control unit 11 acquires the first transmission data and the second transmission data different from the first transmission data from the delivery server 3 , and stores them in the memory 12 .

[0078] In addition, the control unit 11 controls so that the plurality of frames tr...

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PUM

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Abstract

The purpose of the present invention is to appropriately transmit data by broadcasting a wireless LAN. The wireless transmission system acquires transmission data (S101), sequentially transmits (S105), by broadcasting, a plurality of frames modulated by any one of a plurality of modulation methods including a first modulation method and a second modulation method, controls transmission of a first frame modulated by the first modulation method on the basis of a part of the transmission data, and controls transmission of a second frame modulated by the second modulation method on the basis of the first frame after transmission of the second frame. A second frame modulated by a second modulation method on the basis of a part of the transmission data is transmitted (S103).

Description

technical field [0001] The present invention relates to a wireless sending device, a wireless receiving device, a wireless system and a wireless sending method. Background technique [0002] Wireless LANs are used in various places. In wireless LAN communication, a broadcast packet including SSID, ARP, and the like is transmitted via a wireless LAN access point. Broadcast packets are sent to all wireless LAN clients. Therefore, broadcast data is usually modulated by the slowest modulation method among a plurality of predetermined modulation methods (referred to as MCS), and transmitted to wireless LAN clients. [0003] Patent Document 1 discloses that distances between a plurality of wireless devices are measured using broadcast messages transmitted from a plurality of wireless devices. [0004] Patent Document 1: Japanese PCT Publication No. 2018-514752 [0005] With the diversification of network services, it is considered to transmit various contents by broadcasting. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04L1/00
CPCH04B1/40H04L1/0006H04L1/0003H04L1/0009H04L1/0015H04L2001/0093H04W28/06
Inventor 岩本骏铃木裕和菅原寿之
Owner YAMAHA CORP