Channel allocation method and central base station for security services in electric power wireless private network

Abstract

The present invention provides a channel allocation method and a central base station for security services in a power wireless private network. The method receives time slot application information sent by a terminal station in a security zone, and the time slot application information includes the services of the terminal station in the security zone. Priority; according to the service priority of the terminal station in the security zone, search for a free time slot in a channel divided into time slots; allocate the free time slot to the terminal station in the security zone that sends the application information for the time slot; The central base station is equipped with an application receiving module, a time slot query module and a time slot allocation information sending module. The present invention effectively reduces the occupation of channel capacity during service transmission, and improves the efficiency of wireless spectrum utilization. It has low cost, flexibility and strong scalability, and realizes independent and fast transmission of service data, thereby completing the transmission of different services. Air interface physical layer isolation improves the security and reliability of business data transmission.

Description

technical field [0001] The invention relates to a channel allocation technology in a private electric power wireless network, in particular to a channel allocation method and a central base station for security services in a private electric power wireless network. Background technique [0002] The power wireless private network has the advantages of wide coverage, low construction difficulty, short implementation period, and flexible networking. It is an important means to realize power distribution and communication. At the same time, as a private network in the power industry, it carries tasks such as power grid production, scheduling, operation, management information, and data collection. Its safety and reliability are related to the stability of power grid operation. [0003] The power secondary system in the electric power wireless private network is divided into four security areas: I real-time control area, II non-controlled production area, III production managemen...

AI Technical Summary

Problems solved by technology

The LTE technology mechanism stipulated by 3GPP is based on broadband OFDM and MIMO technology to compete and dynamically schedule the entire spectrum resource to maximize channel capacity. However, the parallel transmission of multiple services brings security risks, so physical isolation of spectrum can be used to However, this method violates the origin of broadband transmission to a certain extent, and will lose a certain channel capacity. With the growth of business volume and the improvement of user demand, the power wireless private network will face the problem of insufficient spectrum resources

The physical isolation method based on spectrum partition occupies a large amount of spectrum resources, and at the same time, the efficiency of wireless spectrum utilization is low.

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