Data offloading for dynamic point selection in cloud radio access networks (C-RAN)

Ching Kuo Hsu, Jia Ming Liang, Jen Jee Chen, Kun Ru Wu, Yu Chee Tseng

研究成果: 圖書/報告稿件的類型會議稿件同行評審

5 引文 斯高帕斯(Scopus)

摘要

For next generation mobile communications, Cloud-RAN (C-RAN) is an emerging network architecture to provide broadband services. C-RAN separates computation entities, i.e., Baseband Units (BBUs), from base stations (BSs) and puts BBUs in a cloud located in a centralized network. With C-RAN, UEs can receive data from multiple collaborative cells and thus can leverage the dynamic point selection (DPS) technology to improve network efficiency. When user equipments (UEs) enter a hotspot and can not be served due to congestion, data offloading from the hotspot to its neighboring cells may take place to balance heterogeneous cells' loads. This work shows how to integrate such DPS offloading with the Discontinuous Reception (DRX) mechanism, which allows UEs to turn off their radio interfaces in a periodical manner. We address the resource allocation problem in heterogeneously-loaded C-RAN by optimizing UEs' energy consumption based on DRX while reserving sufficient bandwidths for UEs considering their quality-of-service (QoS) through DPS. We propose an offloading-based DPS scheduling scheme by exploiting not only maximal instantaneous throughputs but also minimal energy cost. Simulation results show that our scheme can improve throughput, resource utilization, and energy consumption as compared to existing schemes.

原文英語
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
出版狀態已出版 - 08 06 2018
事件2018 IEEE Wireless Communications and Networking Conference, WCNC 2018 - Barcelona, 西班牙
持續時間: 15 04 201818 04 2018

出版系列

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

Conference

Conference2018 IEEE Wireless Communications and Networking Conference, WCNC 2018
國家/地區西班牙
城市Barcelona
期間15/04/1818/04/18

文獻附註

Publisher Copyright:
© 2018 IEEE.

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