Method for adaptively controlling frequency of self-organizing frequency hopping network

Abstract

The invention discloses a method for adaptively controlling the frequency of a self-organizing frequency hopping network. The invention aims to provide a method with good survivability. The method isrealized through the following technical scheme: in the self-organizing frequency hopping network which is composed of a plurality of network nodes with equal status, each node comprises a frequency adaptive control function entity, a frequency hopping sending unit and a frequency hopping receiving unit for transmitting wireless signals through a wireless channel, and a frequency control unit forsending a frequency hopping sequence and a data message to the frequency hopping sending unit and the frequency hopping receiving unit; in the adaptive frequency control process, each node takes a neighbor signal-to-noise ratio and an interference condition sensed by the node as control parameters; and automatically selects the most appropriate frequency set from all frequencies in the working frequency band as a sending frequency hopping frequency set of the node, calculates a new sending frequency hopping frequency set, generates a frequency set notification message, automatically adjusts the sending times of the control message, and adaptively controls the frequency of the frequency hopping network.

Description

technical field [0001] The invention relates to a frequency self-adaptive control method suitable for an ad hoc frequency hopping network. Background technique [0002] Frequency hopping networking is to achieve effective communication in a strong interference environment and avoid mutual interference between own stations, and reasonably network frequency hopping communication stations. An ad hoc network is a centerless multi-hop network formed spontaneously by several mobile nodes through a distributed network protocol. Self-organizing networks can efficiently deal with network topology changes, transmission link failures and other issues, and have strong flexibility and invulnerability. As a distributed network, the mobile ad hoc network is an autonomous, multi-hop network. The entire network has no fixed infrastructure, and it can Provides intercommunication between endpoints. Due to the limited transmission power and wireless coverage of the terminal, if two terminals...

AI Technical Summary

Problems solved by technology

The three conditions are indispensable, otherwise frequency hopping communication cannot be realized

However, due to the need to increase the feedback channel, the network overhead and equipment cost are increased, and there is also the problem of frequency adaptive control failure caused by the feedback channel itself being interfered by poor communication.

[0008] Existing technical solutions either use a central control method with a single-point failure problem, or use a method of setting a dedicated feedback channel separately, all of which have their own limitations, and are prone to failure in a strong interference environment, and cannot fully satisfy self-organizing frequency hopping networks. Reliability Requirements for Adaptive Frequency Control in Harsh Electromagnetic Environment

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