Cross-Layer Framework for Capacity Analysis in Multiuser Ultra-Dense Networks with Cell DTx

作     者：Qing Li Yu Chen Qimei Cui Yu Gu Guoqiang Mao 

作者机构：National Engineering Laboratory for Mobile Network TechnologiesBeijing University of Posts and TelecommunicationsBeijing 100876China School of Computing and CommunicationsUniversity of Technology SydneyNSW 2007Australia 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2019年第16卷第9期

页      面：106-121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] 

基　　金：supported by the National Science and Technology Major Project 北京市自然科学基金 National Youth Top-notch Talent Support Program 国家教育部高等学校学科创新引智计划项目 

主　　题：effective capacity QoS performance sum rates multiuser scheduling ultra-dense network (UDN) 

摘      要：Cell discontinuous transmission(Cell DTx)is a key technology to mitigate inter-cell interference(ICI)in ultra-dense networks(UDNs).The aim of this work is to understand the impact of Cell DTx on physical-layer sum rates of SBSs and link-layer quality-of-service(QoS)performance in multiuser *** this work,we develop a cross-layer framework for capacity analysis in multiuser UDNs with Cell *** particular,we first extend the traditional one-dimensional effective capacity model to a new multidimensional effective capacity model to derive the sum rate and the effective ***,we propose a new iterative bisection search algorithm that is capable of approximating QoS *** convergence of this new algorithm to a unique QoS exponent vector is later ***,we apply this framework to the round-robin and the max-C/I scheduling *** results show that our framework is accurate in approximating 1)queue length distribution,2)delay distribution and 3)sum rates under the above two scheduling policies,and further show that with the Cell DTx,systems have approximately 30% higher sum rate and 35% smaller average delay than those in full-buffer scenarios.