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Service channel establishing method suitable for time asynchronous cognitive node

A cognitive node, time-asynchronous technology, applied in wireless communication, electrical components, connection management, etc., can solve the problem that time-asynchronous cognitive node information exchange cannot be guaranteed, and achieve the effect of supporting environment-aware information exchange and business channel negotiation

Active Publication Date: 2017-03-22
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

In IEEE Milicom, 2009: "Rendezvous macprotocols for use in cognitive radio networks", MarkD.Silvius proposed a time slot design method using a "back-to-back" repetition strategy. However, this algorithm cannot guarantee that the time-asynchronous cognitive nodes are at the intersection of the channels. complete information exchange

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  • Service channel establishing method suitable for time asynchronous cognitive node

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Embodiment Construction

[0031] The principles and technical solutions of the present invention will be further described below.

[0032] refer to figure 1 , the realization process of the present invention comprises as follows:

[0033] The service channel establishment process of the source node:

[0034] Step 1: Each source node generates multiple hopping channel subsequences and multiple fixed channel subsequences respectively according to the number of shared control channels planned by the system, and randomly sorts the multiple hopping channel subsequences and multiple fixed channel subsequences combined into a complete channel hopping sequence; the specific steps are:

[0035] (1.1) Each source node builds a Hopping channel subsequences, N is the number of shared control channels in the distributed cognitive wireless network, let i=1,..., j=1,...,N, then the jth element of the i-th hopping subsequence is (T i +j-1)modN, where is the triangular number of i;

[0036] (1.2) Each source no...

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Abstract

The invention provides a service channel establishing method suitable for a time asynchronous cognitive node, meanly used for solving the problem that the cognitive node establishes service channels in a plurality of shared control channels in a distributed wireless network. According to the invention, a hop sequence of cognitive node channels is established by means of the sub sequence combination mode based on hop channels and fixed channels, and an information channel intersection time slot format of repeating transceiver in multi time slot is designed. The invention is suitable in time asynchronous distributed cognitive radio network environment, and by means of the service channel establishing method suitable for a time asynchronous cognitive node provided by the invention, the channel intersection and information interaction for a plurality of cognitive nodes with symmetric identities in a plurality of shared control channels can be achieved, the service channels can be established, and the realization of the environment perception information interaction of cognitive nodes and the negotiation of business channels can be supported.

Description

technical field [0001] The invention relates to a service channel establishment mechanism of a time-asynchronous cognitive node in the field of distributed cognitive wireless networks, and is especially suitable for a time-asynchronous distributed network environment where multiple symmetric cognitive nodes operate on multiple candidate control channels. Service channels are established on the network to support the realization of environment awareness information interaction and service channel negotiation. Background technique [0002] In the centralized network, there is a central controller, and the cognitive nodes communicate with the central controller by competing for random multiple access channels, and further complete the traffic channel negotiation between cognitive nodes under the guidance of the central controller. In a traditional distributed network, there is also a dedicated public control channel. Cognitive nodes compete for the transmission resources of the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02
CPCH04W76/10
Inventor 闫继垒郝志安赵辉郭彦涛吴巍
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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