Contract theory based incentive mechanism design for buffer resource in wireless caching networks

作     者：刘婷婷 Tang Lei Zhu Hao Bao Yongqiang Guo Yajuan Liu Tingting;Tang Lei;Zhu Hao;Bao Yongqiang;Guo Yajuan

作者机构：School of Information and Communication EngineeringNanjing Institute of TechnologyNanjing 211167P.R.China Institute of Electric Power ScienceJiangsu Electric Power Co.Ltd.Nanjing 210024P.R.China 

出 版 物：《High Technology Letters》 (高技术通讯（英文版）)

年 卷 期：2020年第26卷第2期

页      面：152-159页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0810[工学-信息与通信工程] 1205[管理学-图书情报与档案管理] 0807[工学-动力工程及工程热物理] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 0836[工学-生物工程] 0811[工学-控制科学与工程] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the National Natural Science Foundation of China(No.61702258) the Key Projects of Natural Science Research in Colleges and Universities of Jiangsu Province(No.19KJA410001) the Foundation of Jiangsu Advanced Numerical Control Technology Key Laboratory(No.SYKJ201901). 

主　　题：contract theory buffer resource allocation wireless caching network incentive mechanism design 

摘      要：Evidences indicate that,due to the limited caching capacity or inaccurate estimation on users’preferences,the requested files may not be fully cached in the network edge.The transmissions of the un-cached files will also lead to duplicated transmissions on backhaul channels.Buffer-aided relay has been proposed to improve the transmission performance of the un-cached files.Because of the limited buffer capacity and the information asymmetric environment,how to allocate the limited buffer capacity and how to incentivize users in participating buffer-aided relay have become critical issues.In this work,an incentive scheme based on the contract theory is proposed.Specifically,the backlog violation probability,i.e.,the buffer overflow probability,is provided based on the martingale theory.Next,based on the backlog violation probability,the utility functions of the relay node and users are constructed.With the purpose to maximize the utility of the relay node,the optimal contract problem is formulated.Then,the feasibility of the contract is also demonstrated,and the optimal solution can be obtained by the interior point method.Finally,numerical results are presented to demonstrate effectiveness of the proposed contract theory scheme.