Wireless communication apparatus and wireless communication method

A wireless communication device and wireless communication technology, applied in wireless communication, radio transmission system, communication between multiple stations, etc., can solve problems such as the application of MAC mode, and achieve the effect of ensuring transmission distance

Inactive Publication Date: 2013-03-27
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The WiMedia beacon period method assumes non-directional radio waves, so the MAC method cannot be directly applied to the WiMedia method
As a result, currently, IEEE802.15.3C is limited to communication based on the premise of transmitting from a fixed antenna to an object whose position has been determined.

Method used

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  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method
  • Wireless communication apparatus and wireless communication method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0031] figure 1 It is a block diagram showing the configuration of the wireless communication device according to Embodiment 1 of the present invention.

[0032] figure 1 The shown wireless communication device 100 includes: a sector antenna 110 , a carrier detection unit 120 , a MAC unit 130 , a transmitting and receiving unit 140 and a switch 150 . Here, each antenna element having directivity constituting the sector antenna 110 is referred to as a "sector", for example, a pair of sector 1 and sector 4 is described as "transmitting and receiving pair 1-4". Sector 4 is a sector pointing in the exact opposite direction to sector 1 (having the exact opposite directionality). Transmitting and receiving pairs 1-4, 2-5, and 3-6 are composed of sector 1 and sector 4, sector 2 and sector 5, and sector 3 and sector 6, respectively. In addition, the MAC unit 130 includes: a control unit 132 , a beacon processing unit 134 and a frame processing unit 136 .

[0033] In addition, he...

Embodiment approach 2

[0081] Various beam-forming antennas (beam steering antenna) are widely used as antennas with switchable directivity. Beamforming antennas allow fine-grained software control over directivity. In Embodiment 2, a case where two-dimensional spatial multiplexing is performed by a beamforming antenna will be described.

[0082] Beamforming antennas do not have fixed directivity like sector antennas. Therefore, it is necessary for each wireless communication device to distinguish which direction is to be controlled in a pair with which direction. In addition, among a plurality of wireless communication devices, it is necessary to match the rotation of an axis (hereinafter simply referred to as "axis") extending in a direction that maximizes antenna gain. That is, all wireless communication devices (hereinafter referred to as "nodes" as appropriate) share one transmission and reception direction, and the direction of beamforming is determined according to the shared transmission a...

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PUM

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Abstract

Provided is a wireless communication apparatus wherein random multi-access can be performed while ensuring a transmission distance, even with a radio wave having directivity. A wireless communication apparatus (100) transmits / receives directional radio waves and performs ad hoc network communication with other wireless communication apparatuses. The wireless communication apparatus is provided with an antenna (110) for transmitting / receiving the directional radio waves and switching the directivity, and a control section (132) for controlling timing for switching the directivity of the antenna.

Description

technical field [0001] The present invention relates to a wireless communication device and a wireless communication method, in particular to a wireless communication device and a wireless communication method in an ad hoc network under a mobile environment. Background technique [0002] PAN (Personal Area Network, Personal Area Network) is a network technology that is developing in recent years. In particular, WiMedia specifications using microwave UWB (Ultra Wide Band) have been adopted as ECMA (European Computer Manufacturer Association) standards, and products are about to be launched. In addition, since the standard of WiMedia is also adopted as the standard of the wireless USB (Universal Serial Bus, Universal Serial Bus), it is expected that its products will spread in the market in the future. [0003] As a feature of WiMedia's MAC (Media Access Control, medium access control) technology, a beacon period (beacon period) method can be mentioned. This method is a tech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/26H04W88/02
CPCH04B7/086H04W88/02H04B7/0617
Inventor 土居裕松本泰辅
Owner PANASONIC CORP
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