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Cognitive radio self-organization network message multicast transmission method

A self-organizing network and cognitive radio technology, applied in network topology, wireless communication, network data management, etc., can solve problems such as no implementation plan and reduce the probability of wireless channel access conflicts, so as to save consumption and reduce message overhead , The effect of reducing the length of the message

Inactive Publication Date: 2011-01-12
HARBIN ENG UNIV
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Problems solved by technology

In addition, Huang Benxiong and others from Huazhong University of Science and Technology published an article entitled "Application of Network Coding in Cognitive Radio", but in fact, the research content of this document and the application of the present invention is more different
Specifically, this document only analyzes the characteristics of network coding technology, and analyzes that network coding technology can reduce the probability of wireless channel access conflicts between authorized users and unauthorized users in cognitive radio networks, and does not propose a specific implementation plan

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  • Cognitive radio self-organization network message multicast transmission method
  • Cognitive radio self-organization network message multicast transmission method
  • Cognitive radio self-organization network message multicast transmission method

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Embodiment Construction

[0026] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0027] The multi-channel wireless network involved in the present invention includes a cognitive radio ad hoc network, a cognitive wireless local area network, and the like. All nodes support a common wireless control message exchange channel and multiple data channels, and the nodes transmit communication control messages through the public wireless control message exchange channel. Due to differences in location and environment, and changes in the activity status of other network nodes, the sets of data channels that different nodes can access may be different. And for the channels that can be accessed, due to the influence of various factors such as the relative positional relationship between the sending node and the receiving node and the environment, the communication quality of different channels is different, resulting in different message transmission suc...

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Abstract

The invention provides a cognitive radio self-organization network message multicast transmission method. In the method, the task of message multi cast transmission is carried out in batches, and message amount in each batch can be changed. The method is divided into two parts i.e. a messaging method and a message acceptance method. Each node has two wireless work threads to respectively operate two parts of methods; and the messaging method and the message acceptance method of each node are cooperated to finish the task of message multi cast transmission. The messaging method utilizes the network coding technology and obtains an optimal message transmission scheduling policy by solving an integer linear programming problem; and then, a proper quantity of combined messages is successivelytransmitted on each available channel so as to effectively save message transmission quantity. Each coding vector is generated by a public random function according to a random seed; the combined message contains the random seed but not the coding vector to serve as decoding assistant information so as to save combined message length.

Description

technical field [0001] The invention relates to a multicast transmission method of cognitive radio self-organizing network message in the field of wireless network and wireless communication. Background technique [0002] Cognitive radio self-organizing network is a wireless multi-hop network using cognitive radio technology, which can automatically discover and use idle spectrum without affecting authorized users, so as to solve the problem of spectrum resource shortage and low utilization rate. Efficient information multicast and broadcast technology is a basic technology of cognitive radio self-organizing network technology, which is of great significance to the application and promotion of cognitive radio network. [0003] Compared with traditional wireless networks, the most prominent features of cognitive radio ad hoc networks are multi-channel characteristics, differences in available channel sets of different nodes, and variability of message transmission quality in ...

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Application Information

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IPC IPC(8): H04W4/06H04W8/02H04W84/18
Inventor 高振国赵蕴龙蔡绍滨王慧强刘彦文刘胜
Owner HARBIN ENG UNIV
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