Resource scheduling method of multi-hop wireless network based on relay station

Abstract

The invention discloses a resource scheduling method based on multihop wireless networks of relay stations, comprising: obtaining smallest resource demand of connected mobile users directly transmitting signals covered by each base station and each relay station, obtaining smallest resource demand of each base station and each relay station through summing; obtaining the interference condition between each relay station, dividing each relay station by different dividing strategies according to the smallest resource demand of each base station and each relay station and the interference condition of each relay station, dividing each relay station into different independent set sharing common resource, judging, comparing the total resource demand under each dividing strategies, to obtain optimized resource multiplex scheduling division strategies. According to the resource scheduling method, each connected QoS demand can be better satisfied and the method is suitable for dynamic asymmetric multihop network.

Description

technical field [0001] The invention relates to a resource scheduling method of a wireless network, in particular to a resource scheduling method of a multi-hop broadband wireless network based on a relay station. Background technique [0002] In recent years, broadband wireless communication technologies and networks have developed rapidly. Due to spectrum planning, the carrier frequencies of emerging wireless communication systems are relatively high. Although a higher frequency band can solve the problem of frequency allocation, the higher the frequency band, the worse the diffraction ability and penetration ability of electromagnetic waves. This situation poses a challenge to the coverage of wireless signals. The current wireless access network architecture is mainly a single-hop (Single-hop) network composed of a base station (BS, Base Station) and a mobile subscriber (MSS, Mobile Subscriber Station). Each MSS is connected to the base station through a wireless link. I...

AI Technical Summary

Problems solved by technology

[0007] However, because this method does not take into account the different bandwidth requirements of each relay station, the resources allocated to each relay station are the same. In order to ensure the normal operation of each relay station, each relay station can only be allocated the resources required by the relay stations within the entire coverage area. maximum value

When the system schedules a series of relay stations that will not cause interference at the same time, due to the difference in current required time resources, the scheduling of some relay stations has already ended, while the scheduling of some relay stations is still continuing, and the scheduling of the next series of relay stations cannot start.

This will still cause a waste of system resources, which in turn will affect the actual bandwidth obtained by each mobile user, making it difficult to meet the QoS requirements of each connection

In addition, this resource scheduling method is only applicable to the deployment scheme of symmetric and fixed relay stations, and does not consider the planning scheme of asymmetric and movable relay stations, so the application range is narrow

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