A coexistence method of LTE-U and WiFi in a multi-operator scenario

Abstract

The invention relates to a coexistence method of LTE-U and WiFi under a multi-operator scene, and belongs to the technical field of the wireless communication. The invention provides a resource scheduling algorithm based on delay priority to guarantee the fairness of the resource distribution among multiple operators and guarantee the transmission performance of the WiFi and transmission quality of a delay sensitive LTE-U user. The algorithm firstly proposes a sub-channel distribution scheme based on the user delay priority, and secondly proposes a resource scheduling scheme based on the optimal power and price; the scheme comprehensively considers the influence on the network performance by the user transmission rate, the channel interference and the delay cost, and the network spectrum utility is maximized in the premise of satisfying the delay demand of the delay sensitive LTE-U user. The algorithm proposed by the invention can realize the optimal utility of the LTE-U user and the operator, can guarantee the fair distribution source among multiple operators, and can guarantee the transmission quality of the delay sensitive LET-U user.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a coexistence method of LTE-U and WiFi in a multi-operator scenario. Background technique [0002] With the development of the mobile Internet, smart devices and mobile applications have grown rapidly, and people can communicate anytime, anywhere, including calls, multimedia and cloud services. At the same time, Internet of Things (IoT) devices have also ushered in the era of rapid development of mobile networks, bringing explosive traffic demands. The business types and business demands of wireless communication have increased unprecedentedly, and higher requirements have been put forward for communication capacity, communication speed, communication delay and communication security. However, the non-renewability of wireless spectrum resources makes researchers face huge challenges in the research and development of new communication technologies and the developmen...

AI Technical Summary

Problems solved by technology

In addition, the resource allocation scheme between different operators will directly affect the performance of WiFi

At the same time, when LTE-U and WiFi share the unlicensed frequency band, LTE-U cannot continuously use the channel to transmit data. Therefore, the service quality problem of delay-sensitive services also needs to be solved urgently

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