Study Of Optimization In Wireless D2D Scheduling Strategy Based On Interactive Real-time Flow

The traditional cellular mobile,the exchange of communication between devices must be through the transit stations to,simple transmission,inter device communication but also interfere with each other,but because the communication takes a great exclusive channel and spectrum resources,which makes th e limited resources is difficult to meet the increasing demand for wireless mobile.So the introduction of direct device(device to device,D2D)technology,reduce the terminal equipment between communication of base station scheduling dependent can greatl y improve the efficiency of terminal communication,but communication modes of this novel brought new problems,D2 D system and mobile communication system exists serious interference.In order to solve the resource utilization rate and the equipment communication interference between the contradictions,researchers proposed a series of programs,coordinate and solve the contradiction,but how to find an optimal scheduling strategy is always the scholars to pursue the goal.In view of the above challenges,the main contents of this paper are as follows:1)Firstly,the background and the research status of the project,and the related key technologies are studied,and the characteristics of D2 D communication system in mobile communication system are analyzed.A clear D2 D system is caused by the interference of the same frequency resource and mobile communication,and the optimization of D2 D communication system is proposed.2)For the problem of the interference of the same frequency resource in the D2 D communication system,the strategy of optimizing the wireless D2 D scheduling is proposed based on the interactive real-time streaming technology.The scheme,through the RTSP protocol to control data is transmitted in real time,realize the interactive function between the D2 D users,between the D2 D system and the cellular system,while maintaining the low interference,cell capacity and spectral efficiency has been optimized,and ultimately achieve efficient use of spectrum and channel resources to.3)Three power control schemes are proposed for the transmission power attenuation problem in the proposed scheme.Let the D2 D system according to the real-time changes of the channel and to receive the signal feedback to make quickly and effectively adjust and control the terminal transmit power,and analyze the impact of the various dynamic power control of transmission capacity.Do further save the terminal resources,coordinate system and system of interference and realize wireless resources fully utilized,so that the proposed scheme can well meet the problems faced by the D2 D system in real life.