Title :
Admission and power control for Device-to-Device links with quality of service protection in spectrum sharing hybrid network
Author :
Liu, Pei ; Hu, Chunjing ; Peng, Tao ; Qian, Rongrong ; Wang, Wenbo
Author_Institution :
Key Lab. of Universal Wireless Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
In this paper, we propose admission control and power optimization algorithms for Device-to-Device (D2D) communication which share uplink resources with cellular system in underlay mode. In the presence of quality of service (QoS) protection (both for D2D and cellular users) and transmit power limit, we propose a set-based admission control (SAC) algorithm in which some novel strategies of sets adjustment are presented to handle the violations of constraints. By using SAC, we get a set which contains admitted D2D links (DLs) as many as possible, and other DLs are rejected, but the D2D system capacity is not optimal. Then, we propose a distributed power optimization (DPO) algorithm to maximize the D2D system capacity after implementation of SAC. In DPO, QoS protection is also provided, each DL uses gradient descent method to update its transmit power, and DLs only need to exchange “price” messages which indicate the effect of interference. Through the numerical results, we demonstrate the feasibility and satisfying performance of proposed algorithms compared to traditional algorithms.
Keywords :
cellular radio; gradient methods; power control; quality of service; telecommunication congestion control; cellular system; device-to-device communication; distributed power optimization; gradient descent method; power control; quality of service protection; set based admission control; spectrum sharing hybrid network; Admission control; Convex functions; Interference; Optimization; Power control; Signal to noise ratio; Device-to-Device; power optimization; price message; quality of service; set-based admission control;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362527