Fast channel switching method for use in power wireless communication system

Abstract

The invention relates to a fast channel switching method for use in a power wireless communication system. The method comprises the following steps that: a base station configures one or more standbychannels for terminal equipment; if downlink transmission fails due to strong interference, the terminal equipment feeds back a retransmission instruction and a standby channel switching instruction to the base station, wherein the standby channel switching instruction includes a preferred standby channel index; the base station performs data retransmission with a preferred and available standby channel after receiving the retransmission instruction and the standby channel switching instruction; and the terminal equipment monitors downlink data on the preferred standby channel until retransmitted data are received. Through adoption of the method, fast channel switching can be realized in the case of sudden strong interference, thereby avoiding interference frequency points in time and completing data transmission as soon as possible.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a fast channel switching method in a power wireless communication system. Background technique [0002] With the rapid development of wireless mobile communication technology, the demand for wireless communication in all walks of life is increasing. However, due to the limited available wireless spectrum resources, multiple communication systems and multiple communication systems coexist for a long time in the same frequency band. For example, many frequency points in the 223-235MHz frequency band are irregularly occupied by multiple departments, including: the power department is used to deploy power wireless communication systems to promote the construction of smart grids; the Ministry of Geology and Mineral Resources is used to remotely measure water levels instrument; the Ministry of Water Resources for hydrological telemetry; the Ministry of Light Industry for electronic...

AI Technical Summary

Problems solved by technology

However, when sudden strong interference occurs, if frequency hopping is not enabled, the terminal will be notified to switch channels before the SIB update or the base station (this process requires the terminal to report channel status information, the base station sends a channel switching instruction, and the terminal completes channel reconfiguration. Data transmission can continue, the delay is large), the base station and the terminal can only retransmit on the same channel

When the interference is strong, retransmission cannot guarantee the successful transmission of data, and the transmission delay will be greatly increased.

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