Relevance-based access method of frequency-hopping communication system

Abstract

The invention discloses a relevance-based access method of a frequency-hopping communication system. In the invention, a cognitive module is added to the common frequency-hopping communication system so as to carry out perception and communication at the same time; and collisionless channel access is realized by virtue of time delay relevance among hopping frequency of different frequency-hopping nodes so as to improve utilization ratio of a wireless spectrum, number of network nodes of the system and system throughput. The access method of calling nodes mainly comprises the following steps: (1) in the channel searching process, the calling nodes obtain use condition of time frequency resource in actual frequency-hopping communication; (2) the calling nodes select scheduling nodes and send access application to the selected nodes; (3) after receiving the access application, the scheduling nodes allocate time frequency resource to the nodes applying for access, feed back access guide information and control the nodes applying for access to access to a network; and (4) after finishing frequency-hopping communication, the nodes send logout notice to the relevant nodes so as to release the occupied time frequency resource.

Description

technical field [0001] The invention relates to a correlation-based frequency hopping communication system access method, which effectively utilizes the available frequency spectrum and time slots sensed in real time, realizes collision-free access to the frequency hopping network through correlation-based time-frequency resource scheduling and allocation, and improves effective resource utilization Rate and system throughput, applied to the access strategy in the frequency hopping communication system. Background technique [0002] The frequency hopping communication system was first used in military communication and has been widely concerned and applied due to its advantages of security and anti-jamming. The frequency hopping communication system is mainly used in civil communication in the ISM frequency band (Industrial Scientific Medical band), which mainly represents the WLAN (Wireless Local Area Network) system with slow frequency hopping and the Bluetooth system (Blu...

AI Technical Summary

Problems solved by technology

[0004] Due to the characteristics of frequency hopping communication, it has the characteristics of dynamic changes in time-frequency resources. If the cognitive technology that relies solely on spectrum monitoring cannot adapt to the changing time-frequency environment, the frequent use of cognitive processes will also increase the complexity of the perception algorithm. Therefore, on the basis of increasing the cognitive function of the general frequency hopping system, the traditional frequency hopping access mechanism can no longer meet the above communication needs

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