Hierarchical-control-channel-mechanism-based cognitive radio network establishment method

A technology of cognitive radio, establishment method, applied in the field of wireless communication signal processing

Inactive Publication Date: 2012-01-04
NAT UNIV OF DEFENSE TECH
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  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem of network establishment in the development and application of cognitive radio networks, the present invention provides a method for establishing cognitive radio networks based on a two-layer control channel mechanism, which effectively solves the problem of the existence of control channels in the process of establishing cognitive radio networks The tension between sex and effectiveness

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  • Hierarchical-control-channel-mechanism-based cognitive radio network establishment method
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  • Hierarchical-control-channel-mechanism-based cognitive radio network establishment method

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Embodiment Construction

[0065] figure 1 It is a flowchart of a method for establishing a cognitive radio network based on a two-layer control channel mechanism. The whole process is divided into five major steps.

[0066] First step, SU 0 Shake hands with neighboring cognitive users.

[0067] Step (1) detects the spectrum range used by authorized users.

[0068] Step (2) measures and records spectral holes.

[0069] Step (3) SU 0 Shake hands with neighboring cognitive users.

[0070] The second step, SU 0 Exchange spectral hole information with neighboring cognitive users.

[0071] The third step is to establish a high-level control channel.

[0072] Step (1) looks for common spectral holes.

[0073] Step (2) configures the upper layer control channel.

[0074] Step (3) Set the receive / transmit beam direction.

[0075] Step (4) realizes the control link of the upper layer control channel.

[0076] The fourth step is to use the high-level control channel to share the electromagnetic enviro...

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Abstract

The invention provides a hierarchical-control-channel-mechanism-based cognitive radio network establishment method. The technical scheme is that: the method comprises the following steps of: first realizing handshaking between secondary users by utilizing a lower level control channel; then exchanging spectrum hole information collected by own spectrum sensors between the handshaking secondary users by utilizing the lower level control channel (LLCC), and once a certain secondary user discovers a common spectrum hole frequency band between the secondary users and when a bandwidth meets preset bandwidth requirements, establishing a higher level control mechanism between the secondary users by utilizing the common frequency band; next fully exchanging own collected electromagnetic environment information between the secondary users, and finding all common frequency holes between the secondary users; and finally establishing a data channel by utilizing the newly found common spectrum holes. By the method, conflicts between the existence and effectiveness of control channels in a cognitive radio network establishment process are effectively resolved.

Description

technical field [0001] The invention belongs to the field of wireless communication signal processing, in particular to cognitive radio and its network Background technique [0002] Cognitive Radio (CR) is a new type of radio equipment capable of sensing the wireless environment, making intelligent decisions about radio behavior, and flexible wireless spectrum access. Since Joseph Mitola III proposed the concept of cognitive radio in 1999, cognitive radio has received continuous, extensive and close attention from academia, industry, commercial and military users in the field of wireless communication, as well as radio management departments of various governments. At present, the recognized cognitive radio should have the following characteristics: First, its transceiver has a wider operating frequency range than traditional wireless devices, as well as variable operating bandwidth, and the current operating frequency and operating frequency can be determined according to s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/14H04W16/18
Inventor 韩方剑韩方景余莉
Owner NAT UNIV OF DEFENSE TECH
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