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A Novel Cognitive Radio Multi-channel MAC Protocol Method

A cognitive radio, multi-channel technology, used in wireless network protocols, wireless communications, electrical components, etc.

Active Publication Date: 2016-03-09
青海西部矿业科技有限公司
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Problems solved by technology

[0004] It can be seen from the above characteristics of cognitive radio MAC and related research that the design of MAC protocol is quite challenging.

Method used

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  • A Novel Cognitive Radio Multi-channel MAC Protocol Method
  • A Novel Cognitive Radio Multi-channel MAC Protocol Method
  • A Novel Cognitive Radio Multi-channel MAC Protocol Method

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Embodiment Construction

[0031] The specific implementation is as follows: the present invention proposes a new cognitive radio multi-channel MAC protocol method, which uses a controller to sense channels in sequence and defines channel availability. Its goal is to reduce the frequency of channel switching while reducing the impact of interference, thereby increasing the throughput of the network. It is mainly divided into two stages: channel information collection period and channel selection period. Figure 4 .

[0032] It is assumed that data transmission is to be carried out between transmitter A and receiver B, C is the neighbor node of B, and Ctrl is the control machine. The "transmitter" is the host that sends the MAC data frame, the "receiver" is the host that receives the MAC data frame, and the "controller" is responsible for sensing the busy or idle state of the channel. Then A and B will be processed according to the following steps:

[0033] Step 1: The information collection period of...

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Abstract

The invention provides a cognitive radio multi-channel measurement and control (MAC) protocol. The protocol has the basic thought of improving network performance by using the characteristic of dynamic change of frequency spectrum of a cognitive radio multi-channel environment. At a frequency spectrum cognition stage, the protocol discovers available idle frequency spectrum in a synchronous time slot mode by adopting a method for perceiving the frequency spectrum in sequence by a controller. Meanwhile, the protocol defines the channel availability, and preferably selects an idle channel with high availability for data transmission. The protocol ensures reduction of cognitive user conflicts and reliability of data channels in a cognitive radio network so as to improve the throughput of the cognitive radio network.

Description

technical field [0001] The invention relates to a novel cognitive radio multi-channel MAC protocol method, in particular, it proposes that a control machine perceives channels in sequence and defines channel availability. When selecting a data channel, select according to channel availability. That is, under the premise that there is an idle channel, the cognitive node can preferentially select an idle channel with high availability for data transmission. In this way, the frequency of channel switching can be reduced, and the influence of interference can be reduced at the same time, so that data can be transmitted smoothly and correctly as much as possible. Background technique [0002] At present, as the demand for wireless communication continues to grow, the spectrum resources of wireless communication become increasingly tight, which becomes a new bottleneck restricting the development of wireless communication. On the other hand, the spectrum resources that have been...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/10H04W16/14H04W74/08H04W80/02
Inventor 林大泽张永德周贤伟黄秋香张鸣鲁李永芳赵丹萍
Owner 青海西部矿业科技有限公司
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