Energy-efficient task scheduling and resource allocation in downlink C-RAN

Wenchao Xia, Jun Zhang, Tony Q.S. Quek, Shi Jin, Hongbo Zhu

研究成果: Conference contribution

5 引文 斯高帕斯(Scopus)

摘要

In this paper, we aim to minimize the network power consumption (NPC) in a downlink cloud radio access network. Not only the powers consumed at remote radio heads and fronthaul links for transmission, but also the power consumed at the baseband unit pool for computation is considered. We formulate a joint NPC minimization problem as a mixed timescale issue which can be regarded as a combination of two power minimization problems for computation and transmission, where the former is a slow timescale issue since task scheduling and computation resource allocation are usually executed in a large time space whereas the latter is a fast timescale issue due to the dependence on small-scale fading. To deal with timescale challenge, we introduce approximate results of the joint NPC minimization problem according to large system analysis and turn it into a slow timescale issue because the approximations are only dependent on statistical channel information. We propose an iterative coordinate descent algorithm based on branch-and-bound algorithm to find solutions to the joint NPC minimization problem. Numerical results show that the NPC decreases as the delay constraint increases but increases if the execution efficiency or computing capability of servers is degraded.

原文English
主出版物標題2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
發行者Institute of Electrical and Electronics Engineers Inc.
頁面1-6
頁數6
ISBN(電子)9781538617342
DOIs
出版狀態Published - 2018 6月 8
事件2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, Spain
持續時間: 2018 4月 152018 4月 18

出版系列

名字IEEE Wireless Communications and Networking Conference, WCNC
2018-April
ISSN(列印)1525-3511

Other

Other2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
國家/地區Spain
城市Barcelona
期間18-04-1518-04-18

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

指紋

深入研究「Energy-efficient task scheduling and resource allocation in downlink C-RAN」主題。共同形成了獨特的指紋。

引用此