Mode Switching for Energy-Efficient Device-to-Device Communications in Cellular Networks

被引：96
作者：
Feng, Daquan [1 ]
Yu, Guanding [2 ,3 ]
Xiong, Cong [4 ]
Yi Yuan-Wu [5 ]
Li, Geoffrey Ye [6 ]
Feng, Gang [7 ]
Li, Shaoqian [7 ]
机构：
[1] State Radio Monitoring Ctr, Beijing 100037, Peoples R China
[2] Zhejiang Univ, Inst Informat & Commun Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Zhejiang Prov Key Lab Data Storage & Transmiss Te, Hangzhou 310018, Zhejiang, Peoples R China
[4] Mediatek USA Inc, Irvine, CA 92606 USA
[5] Orange Lab Network, Dept Wireless Technol Evolut, Paris, France
[6] Georgia Inst Technol, Sch ECE, Atlanta, GA 30332 USA
[7] Univ Elect Sci & Technol China, Natl Key Lab Commun, Chengdu 610054, Peoples R China
来源：
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2015年 / 14卷 / 12期
基金：
美国国家科学基金会;
关键词：
Device-to-Device (D2D) communications; energy-efficiency (EE); spectrum sharing; mode switch; concave-convex procedure (CCCP); RESOURCE-ALLOCATION; OPTIMIZATION;
D O I：
10.1109/TWC.2015.2463280
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper investigates energy-efficient device-to-device (D2D) communications in cellular networks. We aim to maximize the overall energy-efficiency (EE) of D2D users and regular cellular users (RCUs) while considering the circuit power consumption and the quality-of-service (QoS) requirements for both types of users as well as power constraints. Three transmission modes, namely, dedicated mode, reusing mode, and cellular mode, are considered for D2D users to share spectrum with RCUs. Parametric Dinkelbach method and concave-convex procedure (CCCP) are adopted to transform the original optimization problems into more tractable forms through sequential convex approximations. Then, interior point method is exploited to obtain the optimal solution. Simulation results show that system EE can be improved significantly with the proposed mode switching algorithm compared with the single mode transmission. Besides, it is also shown that the reusing mode is more preferred in the EE based mode switching while it is the dedicated mode in the spectrum-efficiency (SE) based mode switching in most situations.
引用
收藏
页码：6993 / 7003
页数：11
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