Spectrum resource allocation method for wireless return link heterogeneous internet of things

Abstract

The invention discloses a spectrum resource allocation method for a wireless return link heterogeneous internet of things. The method comprises the following steps: 1) dividing user terminals into two groups, wherein one group is directly connected to a macro cell base station and referred to as macro cell users, the other group is connected to a micro cell access point and referred to as micro cell users, and the micro cell access point is connected with the macro cell base station via a wireless return link; 2) respectively providing, by the macro cell base station and the micro cell access point, a communication service for the macro cell users and the micro cell users; and 3) calculating, by the macro cell base station, an optimal allocation coefficient eta* using statistical channel state information, and allocating a spectrum resource according to the eta* value, wherein the wireless return link occupies eta*, and the remaining spectrum resource is used for a wireless access network. Under the condition that the spectrum resource is limited, the principle of maximum total rate of a system is considered, and the spectrum resource is allocated to the wireless access network and the wireless return link, so that the capacity of the system is improved and then the spectral efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of spectrum resource management under the mixed network of macro cells and micro cells in the Internet of Things environment, in particular to a spectrum resource allocation method in the heterogeneous Internet of Things of wireless backhaul links. Background technique [0002] The massive use of network-based smart devices enables IoT to provide related services for applications such as education, medical care, security, and industry. These smart devices act as transceiving entities in the IoT environment to build local networks, making it possible to implement heterogeneous networks based on massive multi-antenna transmission and multi-antenna reception (MIMO) technology and high-density cell network technology. Massive MIMO technology and high-density cell network technology can effectively improve the network capacity. The former improves the spatial freedom by adding base station antennas and serves mor...

AI Technical Summary

Problems solved by technology

Most of the existing heterogeneous network spectrum resource allocation methods only consider the allocation of spectrum resources in the two-layer wireless access network, and do not consider the wireless backhaul link, or consider the wireless backhaul link, but adopt a fixed allocation method, which does not Considering the principle of "maximizing the total system rate", the spectrum efficiency is reduced

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