Spectrum allocation for wireless backhaul in heterogeneous ultra-dense networks

doi:10.19682/j.cnki.1005-8885.2018.0011

中国邮电高校学报(英文) ›› 2018, Vol. 25 ›› Issue (3): 24-32.doi: 10.19682/j.cnki.1005-8885.2018.0011

Spectrum allocation for wireless backhaul in heterogeneous ultra-dense networks

黄沛昱,史江盼,甄岩

重庆邮电大学

收稿日期:2017-08-08 修回日期:2018-01-16 出版日期:2018-06-29 发布日期:2018-06-30
通讯作者: 黄沛昱 E-mail:huangpy@cqupt.edu.cn
基金资助:
中国国家自然科学基金;重庆市教委科学技术研究项目;重庆高校创新团队建设计划资助项目

Spectrum allocation for wireless backhaul in heterogeneous ultra-dense networks

Received:2017-08-08 Revised:2018-01-16 Online:2018-06-29 Published:2018-06-30
Supported by:
National Nature Science Foundation of China;Program for Innovation Team Building at Institutions of Higher Education in Chongqing

摘要/Abstract

摘要： Wireless ultra-dense network (UDN) is one of the important technologies to solve the burst of throughput demand in the forthcoming fifth generation (5G) cellular networks. Reusing spectrum resource for the backhaul of small base stations (SBSs) is a hotspot research because of lower cost and rapid implementation with macro base stations (MBSs) in recent years. In heterogeneous UDN, the problem of spectrum allocation for wireless backhaul is investigated. In particular, two different spectrum resource reusing strategies for wireless backhaul are proposed in heterogeneous UDN with the limited bandwidth condition. Using a stochastic geometry-based heterogeneous UDN model, the success probabilities that mobile users communicate with SBSs or MBSs are derived under two different spectrum resource reusing strategies. In addition, the network throughput’s analytical expressions and the optimal ratio of spectrum allocation are derived. Numeral results are provided to evaluate the performance of the proposed strategies at throughput. Thus, the effectiveness of the strategy that mobile users can only communicate with SBSs is validated.

关键词: ultra-dense networks (UDN), stochastic geometry, spectrum allocation, backhaul links

Abstract: Wireless ultra-dense network (UDN) is one of the important technologies to solve the burst of throughput demand in the forthcoming fifth generation (5G) cellular networks. Reusing spectrum resource for the backhaul of small base stations (SBSs) is a hotspot research because of lower cost and rapid implementation with macro base stations (MBSs) in recent years. In heterogeneous UDN, the problem of spectrum allocation for wireless backhaul is investigated. In particular, two different spectrum resource reusing strategies for wireless backhaul are proposed in heterogeneous UDN with the limited bandwidth condition. Using a stochastic geometry-based heterogeneous UDN model, the success probabilities that mobile users communicate with SBSs or MBSs are derived under two different spectrum resource reusing strategies. In addition, the network throughput’s analytical expressions and the optimal ratio of spectrum allocation are derived. Numeral results are provided to evaluate the performance of the proposed strategies at throughput. Thus, the effectiveness of the strategy that mobile users can only communicate with SBSs is validated.

Key words: ultra-dense networks (UDN), stochastic geometry, spectrum allocation, backhaul links

中图分类号:

TN929.5

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Spectrum allocation for wireless backhaul in heterogeneous ultra-dense networks

Spectrum allocation for wireless backhaul in heterogeneous ultra-dense networks

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