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A Cognitive-Based Star Networking Method for Broadband Wireless Access Devices

A technology for accessing equipment and star networking, applied in wireless communication, network topology, electrical components, etc.

Active Publication Date: 2015-11-25
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention completely solves the implementation problems of spectrum sensing, channel matching, channel cognition and adaptive transmission in the star network, and provides a realization method for the star network of broadband wireless access equipment based on cognition

Method used

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  • A Cognitive-Based Star Networking Method for Broadband Wireless Access Devices
  • A Cognitive-Based Star Networking Method for Broadband Wireless Access Devices
  • A Cognitive-Based Star Networking Method for Broadband Wireless Access Devices

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Experimental program
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Embodiment Construction

[0053] Below, the present invention will be further described in conjunction with the accompanying drawings.

[0054] Based on the cognitive radio star networking strategy, the environmental noise floor information of the wireless spectrum is obtained through spectrum sensing, the relatively "clean" channel matched by the entire network is obtained through the channel selection and matching strategy, and the channel status information is obtained through channel awareness Thereby determining the communication frequency and the standby channel, adjusting the transmission parameters in real time through the adaptive transmission strategy, and completing the access of the non-networked equipment through the late network entry technology, which is characterized in that the steps are as follows:

[0055] (1) The device starts up and enters the initial access stage, as attached figure 1 As shown, set the device type to node device or terminal device;

[0056] (2) If it is a node de...

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Abstract

The invention discloses a cognition-based star networking method for broadband wireless access equipment, and the cognition-based star networking method is used for realizing the spectrum sensing and strategy selection of an initial access phase and the access and adaptive strategy adjustment of late accessing equipment at a communication phase. The initial access phase is a phase from equipment startup to communication establishment and mainly used for realizing an accurate spectrum sensing function; the terminal polling access function is realized through signaling waveforms of 4 kbps; the channel estimation function is realized through waveforms of 80 kbps; and the frequency and rate selection function is used for determining the same working frequency of a whole network through channel selection and matching and channel estimation and determining the communication rate of each link through pairwise channel estimation between nodes and terminal equipment. The communication phase is a phase from the communication establishment to equipment shutdown, spectrum sensing timeslots, access timeslots and channel cognition timeslots are respectively reserved in all communication frames, and both the function of adaptive transmission and adjustment and the function of late networking of new startup equipment are realized at the phase.

Description

technical field [0001] The invention relates to a star networking method for spectrum sensing, channel cognition and adaptive transmission in a cognitive radio system, and is especially suitable for star networking of broadband wireless access devices in complex electromagnetic environments and geographical environments. The purpose is to realize the The rapid establishment of the network after opening (determining the communication frequency of the whole network and the transmission rate of each link) and the adaptive transmission when the environment changes. Background technique [0002] The rapid development of wireless communication can be described as the high-speed growth of new radio services and the continuous increase of user demands. How to improve spectrum utilization to meet users' bandwidth requirements; how to make radio intelligent so that it can flexibly use wireless resources to obtain information services; how to effectively obtain information from the env...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W74/06H04W84/18
Inventor 刘玉涛王荆宁杨喜光马恒
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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