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Wireless communication device and wireless communication method

A technology of wireless communication devices and beacon signals, which is applied in the field of wireless communication systems and wireless communication devices, and can solve problems such as synchronization deviation and reliability reduction

Inactive Publication Date: 2013-07-10
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] As described above, in the case of using the conventional technology, there is the following problem: in the wireless communication system, if another wireless communication system exists within the communication range of the wireless communication system, synchronization deviation is likely to occur, resulting in Reduced reliability

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
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Embodiment approach

[0041] Figure 1A is a block diagram showing the structure of master wireless device 101 in the embodiment of the present invention, Figure 1B is a block diagram showing the configuration of relay wireless device 201 in this embodiment, Figure 1C It is a block diagram showing the configuration of slave wireless device 301 in this embodiment.

[0042] First, the outline of the configuration of master wireless device 101 will be described.

[0043] Such as Figure 1A As shown, the master wireless device 101 includes an antenna 1 , a transmitting and receiving unit 2 , a beacon transmitting unit 3 , a link connecting unit 4 , a routing information analysis and creating unit 5 , a control unit 7 , a timing information transmitting unit 6 and a storage unit 8 .

[0044] The control unit 7 performs overall time management and control of each unit of the master wireless device 101 (wireless communication device). In addition, the control unit 7 functions as a beacon signal creation...

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Abstract

A wireless communication device for communicating with an upper device and a lower device, is provided with a beacon reception unit and a beacon transmission unit. The beacon reception unit receives first regular beacon signals (351) transmitted from the upper device. When the beacon reception unit receives the first regular beacon signal (351), the beacon transmission unit transmits, to the lower device, a second regular beacon signal (351) for synchronizing the clock of the lower device. When the beacon reception unit cannot receive the first regular beacon signal (351), the beacon transmission unit transmits a provisional beacon signal (352) to the lower device, the provisional beacon signal indicating that the clock of the station itself cannot be synchronized with the clock of the upper device.

Description

technical field [0001] The present invention relates to a wireless communication system including a wireless communication device that transmits a beacon signal and a wireless communication device that receives the beacon signal to achieve time synchronization. In particular, it relates to a wireless communication device and a wireless communication method used in such a wireless communication system. Background technique [0002] In a wireless communication system having a battery-driven slave wireless device, in general, the slave wireless device waits for reception intermittently in order to suppress power consumption of the slave wireless device. As a wireless communication system in which slave wireless devices intermittently wait for reception, there is a wireless communication system called a synchronous method. [0003] In this system, the master wireless device periodically transmits a beacon signal, and the slave wireless device periodically receives the beacon si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/15H04W16/26H04W56/00
CPCH04W56/002H04W56/001
Inventor 山本雅弘堀池良雄渡边崇士
Owner PANASONIC CORP