Transmission strategy, bandwidth selection method and system for multicast service of power wireless private network

Abstract

The invention provides a transmission strategy and bandwidth selection method and system for multicast service of a power wireless private network, and the method comprises the steps: S1, calculatingthe signal-to-interference-and-noise ratios of all user terminals of a current cell in an SFN transmission mode, and generating a sorting list; S2, changing the user terminal with the highest sequenceinto a PTP mode, and calculating the single-frequency network spectral efficiency of the current cell; S3, recalculating the signal-to-interference-plus-noise ratio of each user terminal, updating the sorting list, and returning to the step S2; S4, obtaining the number of the user terminals of which the current cell is changed into the PTP mode corresponding to the maximum value of the spectral efficiency of the single frequency network and a sorting list; and S5, determining the number of the user terminals in the SFN mode in the current cell and the SFN bandwidth. According to the invention, the hybrid transmission of PTP and SFN is realized, the influence of worst user signal quality on resource allocation in an SFN transmission mode is reduced, the resource demand of multicast serviceis further reduced, the wireless resource utilization rate of a power wireless private network is improved, and the occurrence of network congestion is reduced.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a transmission strategy, a bandwidth selection method and a system for multicast services of a power wireless private network. Background technique [0002] With the continuous increase in the number of power grid users and services, more and more power services need to be sent in the form of multicast. The rapid development of wireless private networks in the power system has laid the foundation for multicast information transmission in the wide area network. How to Better application of the MBMS (Multimedia Broadcast Multicast Service, MBMS for short, Multimedia Broadcast Multicast Service) technology to the power business has received more and more attention from research institutions. [0003] At present, there are two types of transmission modes in traditional MBMS service transmission, a PTP (Pointtopoint, PTP for short, point-to-point) transmission m...

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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a transmission strategy, a bandwidth selection method and a system for the electric wireless private network multicast service, so as to overcome the single transmission mode of the electric electric wireless private network multicast service in the prior art. For limited bandwidth resources, it is difficult to guarantee the utilization rate of wireless resources

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