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Wireless communication apparatus

A wireless communication device and wireless communication technology, which are applied in the directions of wireless communication, network topology, power management, etc.

Active Publication Date: 2012-08-01
INT SEMICON GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the first wireless communication device is prevented from transmitting signals based on the transmission status from the second wireless communication device
That is, the first wireless communication device is at a disadvantage compared to the second wireless communication device

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0020] Such as figure 1 As shown in , the wireless communication device according to the first embodiment includes a higher layer processing unit 100 , a MAC processing unit 10 , a PHY processing unit 40 , a frequency conversion circuit 50 and an antenna 60 .

[0021] The higher layer processing unit 100 performs processing of a higher layer above the MAC layer. The higher layer processing unit is able to exchange signals with the MAC processing unit 10 .

[0022] The MAC processing unit 10 performs processing of the MAC layer. As described above, the MAC processing unit 10 is capable of exchanging signals with the higher layer processing unit 100 . The MAC processing unit 10 is also capable of exchanging signals with the PHY processing unit 40 . The MAC processing unit 10 includes a reception processing unit 20 and a transmission processing unit 30 .

[0023] The PHY processing unit 40 performs processing of the PHY layer. As described above, the PHY processing unit 40 i...

no. 2 example

[0057]The wireless communication device according to the second embodiment complements the wireless communication device according to the first embodiment explained above. The wireless communication device according to the present embodiment supports the above-described proximity scheme and the normal scheme, and can operate according to one of the schemes selected as needed. The wireless communication device according to this embodiment selects the normal scheme by default.

[0058] Such as image 3 As shown in , the wireless communication device according to this embodiment includes a higher layer processing unit 100 , a MAC processing unit 10 , a PHY processing unit 40 , a frequency conversion circuit 50 , an antenna 60 and a MAC / PHY management unit 70 .

[0059] The MAC / PHY management unit 70 is connected to the higher layer processing unit 100, the MAC processing unit 10 (more specifically, the reception processing unit 20 and the transmission processing unit 30), and th...

no. 3 example

[0074] The wireless communication device according to the third embodiment complements the wireless communication devices according to the first and second embodiments described above. In this embodiment, formation and maintenance of a proximity scheme-based wireless communication group (eg, BSS in IEEE 802.11) will be described. That is, according to the present embodiment, a wireless communication device configured to support the proximity scheme forms a BSS of the proximity scheme.

[0075] Generally, in IEEE 802.11, when forming a BSS, there are two types of wireless communication devices: one wireless communication device transmits a beacon frame (management frame) (in this embodiment, for convenience, the wireless communication device that provides this function The device is referred to as the first wireless communication device), and another wireless communication device receives the beacon frame (in this embodiment, for convenience, the wireless communication device p...

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PUM

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Abstract

The invention discloses a wireless communication apparatus. According to embodiments, a wireless communication apparatus supports at least a second wireless communication scheme between a first, wireless communication scheme and the second wireless communication scheme. The first wireless communication scheme requires that a wireless medium is determined to be busy when a reception level is equal to or greater than a minimum reception sensitivity level of physical scheme. The apparatus includes a first processing unit (70) and a second processing unit (40). The first processing unit (70) is configured to set a value lower than a maximum transmission power of the first wireless communication scheme, for a maximum transmission power of the second wireless communication scheme and set a value greater than the minimum reception sensitivity level, of the physical scheme, for a carrier sense level, when the second wireless communication scheme is used. The second processing unit (40) is configured to carry out carrier sense using the carrier sense level.

Description

technical field [0001] Embodiments described herein relate generally to wireless communications. Background technique [0002] As a wireless communication scheme based on carrier sense, for example, IEEE 802.11 is known. In IEEE 802.11, the carrier sense level is uniquely determined for each physical scheme. Thus, according to IEEE 802.11, multiple wireless communication devices utilizing the same physical scheme can share the same wireless medium so as to coexist. [0003] However, if a wireless communication device (for convenience, referred to as a first wireless communication device in the background art) controls the maximum transmission power according to a (carrier sense based) wireless communication scheme (for example, IEEE 802.11) to achieve a communication range Problems arise when proximity wireless communication is limited to, for example, about a few centimeters. Specifically, if another wireless communication device using the normal maximum transmission pow...

Claims

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Application Information

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IPC IPC(8): H04B1/38H04W88/02
CPCH04W16/14H04W72/082H04W88/06H04W72/541H04W72/51H04W74/0808H04W52/34H04W52/54H04W84/12
Inventor 足立朋子坂耕一郎旦代智哉笠见英男
Owner INT SEMICON GRP