基于合同理论的D2D数据协作转发机制

doi:10.11959/j.issn.1000-0801.2018244

Abstract

Abstract:

A contract theory-based D2D data forwarding mechanism was proposed for device-to-device (D2D) communications under cellular networks.Firstly,considering the selfishness of users,a model of principal-agent was constructed,which regarded the transmitter user as principal and the idle user as agent.Then,the utility function of the contract was used to construct the optimization problem with the constraint condition.Meanwhile,the utility function of the two sides was converted into the satisfaction degree of the two sides of the contract.Finally,the stable matching with the minimum weight was constructed to obtain the optimal contract solution.The simulation results show that the proposed mechanism can better encourage the idle user to participate in collaborative communication so as to enhance the user’s degree of satisfaction and throughput.

Key words: device-to-device communication, contract theory, stable matching, data forwarding

CLC Number:

TN915

Jin ZHOU,Luyang ZHANG,Peng YANG. D2D data collaboration forwarding mechanism based on contract theory[J]. Telecommunications Science, 2018, 34(10): 18-26.

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仿真参数	参数值
噪声功率谱密度/(dBm?Hz^-1)	-174
系统带宽/MHz	20
D2D用户数/个	78
用户移动速度/(m·s^-1)	3
数据生存时间/min	10
用户满意度阈值	0.125
基站发送功率/dBm	46
D2D用户发送功率/dBm	23

D2D data collaboration forwarding mechanism based on contract theory

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