Cooperative transmission meets computation provisioning in downlink C-RAN

Kun Guo, Min Sheng, Jianhua Tang, Tony Q.S. Quek, Xijun Wang, Zhiliang Qiu

研究成果: Conference contribution

10 引文 斯高帕斯(Scopus)

摘要

Cloud radio access network (C-RAN), regarded as a promising green network architecture, facilitates cooperative transmission among remote radio heads (RRHs) while enabling flexible computation provisioning in the virtualized baseband unit pool. By jointly optimizing cooperative transmission, i.e., transmit power allocation with zero-forcing precoding adopted, and computation provisioning, i.e., virtual machine assignment, this paper minimizes the system power consumption comprised of transmit power and processing power in downlink C-RAN. Specifically, subject to per-RRH power constraint (PRPC) and per-MU quality of service constraint, the system power consumption minimization problem is formulated as a mixed integer nonlinear programming (MINLP) problem. To solve the challenging MINLP, we reformulate the MINLP as a minimum weight perfect matching problem to get the initial solution without considering the PRPC. On this basis, a power-aware greedy algorithm is further devised to modify the solution such that the PRPC is satisfied. Finally, extensive simulations show the superiority of the proposed scheme on system power saving and the tradeoff between transmit power and processing power.

原文English
主出版物標題2016 IEEE International Conference on Communications, ICC 2016
發行者Institute of Electrical and Electronics Engineers Inc.
ISBN(電子)9781479966646
DOIs
出版狀態Published - 2016 七月 12
事件2016 IEEE International Conference on Communications, ICC 2016 - Kuala Lumpur, Malaysia
持續時間: 2016 五月 222016 五月 27

出版系列

名字2016 IEEE International Conference on Communications, ICC 2016

Other

Other2016 IEEE International Conference on Communications, ICC 2016
國家/地區Malaysia
城市Kuala Lumpur
期間16-05-2216-05-27

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信

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