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Method, transmitting equipment and receiving equipment for controlling sub-channel CCA (Clear Channel Assessment)

A sub-channel and retransmission technology, which is applied in the field of controlling sub-channel idle channel evaluation, can solve the problem of large power consumption and achieve the effect of reducing power consumption

Inactive Publication Date: 2014-08-06
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The embodiment of the present invention provides a method for controlling sub-channel CCA, a sending device, and a receiving device, so as to solve the problem of large power consumption in the prior art and reduce power consumption

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  • Method, transmitting equipment and receiving equipment for controlling sub-channel CCA (Clear Channel Assessment)
  • Method, transmitting equipment and receiving equipment for controlling sub-channel CCA (Clear Channel Assessment)
  • Method, transmitting equipment and receiving equipment for controlling sub-channel CCA (Clear Channel Assessment)

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Embodiment Construction

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] figure 1 It is a schematic flow chart of an embodiment of the method for controlling sub-channel CCA in the present invention, including:

[0035] Step 11: The receiving end receives the corresponding RTS frame sent by the sending end before transmitting data, performs CCA measurement on the secondary channel, and sends a CTS frame to...

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Abstract

The invention provides a method, transmitting equipment and receiving equipment for controlling sub-channel CCA (Clear Channel Assessment). The method comprises the following steps of: receiving a corresponding RTS (Ready To Send) frame which is transmitted by a transmitting terminal before data are transmitted, carrying out CCA measurement on a sub-channel and transmitting a CTS (Clear To Send) frame to the transmitting terminal on a main channel, wherein the CTS frame is a response to the RTS frame; determining transmission bandwidth after receiving the CTS frame on the transmitting terminal; and receiving the transmitting terminal data transmitted on the transmission bandwidth, and stopping the CCA measurement on the sub-channel after finishing the data transmission. According to the embodiment of the invention, power consumption can be reduced.

Description

technical field [0001] The present invention relates to wireless communication technology, and in particular to a method for controlling clear channel assessment (ClearChannel Assessment, CCA) of a secondary channel, a sending device and a receiving device. Background technique [0002] In a wireless local area network (WLAN), in order to avoid transmission conflicts, a CCA module may be used to detect whether the channel is idle. However, in some cases, the transmissions of all other devices cannot be detected. For example, when station (Station, STA) 1 is outside the coverage of STA2, STA1 cannot detect STA2. At this time, STA1 is a hidden node, which may interfere Transmission to STA2. [0003] In order to avoid the problem of hidden nodes, a request to send (RTS) / clear to send (CTS) mechanism can be used. In this mechanism, the sending device sends an RTS frame after detecting that the medium is idle, and the RTS frame contains A Network Allocation Vector (NAV) period ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/20H04W52/02
CPCY02B60/50Y02D30/70
Inventor 李云波朱胡飞李靖
Owner HUAWEI TECH CO LTD
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