Electric power system wireless heterogeneous network selection method and device

Abstract

The invention discloses an electric power system wireless heterogeneous network selection method and device. The method comprises the steps that the service request of a service to be accessed to thenetwork is received; the service feature parameters of the service request are extracted; accessing to an electric power wireless private network or wireless public network is selected according to the service feature parameters; and network resource allocation is performed for the service accessed to the network according to the service feature parameters. The QoS (Quality of Services) requirements of different electric power services are considered, and the most appropriate network is selected for bearing according to the service features. Meanwhile, the concept of resource partitioning is put forward for guaranteeing the safety isolation requirement, and different physical isolation resource pools are assigned to the lean control services, the common control services and other servicesso that the service isolation can be effectively guaranteed, the quality of services can be enhanced and the method and the device have important meaning for enhancing the lean service level of the electric power wireless network.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for selecting a wireless heterogeneous network in a power system. Background technique [0002] At present, the wireless network available in the power system mainly includes three types of networks: the first is to rent a wireless public network, including wireless networks of China Mobile, China Unicom, and China The network cannot carry the control services of the power system. The second is to build a private LTE230 wireless network, which mainly uses the 230MHz discrete frequency resources dedicated to power, and uses frequency point aggregation to achieve broadband transmission. However, the aggregated bandwidth is 1MHz, the ability to transmit large traffic services is limited. The third is self-built LTE1800 wireless private network, which shares the use of frequency bands in the range of 1785-1805MHz with other industries. Individual regions h...

AI Technical Summary

Problems solved by technology

[0003] Traditional heterogeneous network selection algorithms can be roughly divided into three categories: the first category is a decision algorithm based on a single network attribute, which has a single decision factor and is easy to implement, but it has few factors to consider, low effectiveness, and is prone to cause a "ping-pong effect".

The second category is a decision algorithm based on multiple attributes, which reduces the influence of the "ping-pong effect" to a certain extent, but the algorithm itself is complex and needs further optimization

The third category is to use dynamic programming or artificial intelligence to make switching judgments, which are highly effective and complex, and require high computing power of the equipment, resulting in limited application range.

The above algorithms consider the integration of LTE, WLAN, WiMAX and other networks, and the algorithm complexity is relatively high. For power application scenarios, the heterogeneous network type is relatively simple, and the complexity of the network selection algorithm is as low as possible. Otherwise, the service access delay will be affected, which in turn will affect the service quality of the service

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