Resource scheduling optimization method based on channel signatures in D2D communication network

Abstract

The invention relates to a resource scheduling optimization method based on channel signatures in a D2D communication network. The method comprises the steps of utilizing the time reversal technologyfor executing channel signature design on honeycomb users and D2D users; adopting a Stackelberg game model for setting the best price for the honeycomb users and distributing the best transmitting power for the D2D user pairs; according to the D2D user capacity gain planning target, adopting a capacity gain region limiting mechanism for distributing candidate honeycomb user link resources for theD2D user pairs; according to the requirement for the D2D user resource reuse fairness, adopting a resource reuse threshold value for limiting the number of D2D user reuse resources; in order to sufficiently utilize the honeycomb user link resources, distributing the D2D user pairs for the idle honeycomb users, and the maximizing the system throughput. The honeycomb user service quality is ensured,the interference between users is restrained, the spectrum efficiency is improved, the honeycomb system capacity loss is lowered, and the system user resource reuse fairness is improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a channel signature-based resource scheduling optimization method in a device-to-device (D2D) communication network. Background technique [0002] and the third generation (the 3 rd Generation, 3G) mobile communication system, the spectrum utilization rate achieved by technologies such as Long Term Evolution-Advanced (LTE-Advanced) and Worldwide Interoperability for Microwave Access (WiMAX) has improved, but Nowadays, people's demand for bandwidth is increasing explosively, resulting in an increasingly scarce wireless spectrum resource. However, high frequency also brings many problems, such as increased space loss and path loss, reduced diffraction capability, and relatively small coverage. At present, the allocated bandwidth resources can no longer meet the development needs of the increasingly expanding communication system. How to make full use of li...

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Problems solved by technology

[0006] In the prior art, in a system where cellular users and D2D user pairs coexist, various interference cancellation technologies in wireless communication systems eliminate mutual interference between users, etc., but ignore the protection mechanism for cellular users in the cellular system, As a result, most research methods only sacrifice the QoS requirements of cellular users in exchange for the improvement of the entire system capacity, resulting in problems such as the unbalanced reuse of system user resources, which makes it difficult to guarantee the service quality of the entire heterogeneous network users (Quality of Service, QoS)

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