Virtual Spectrum Hole: Exploiting User Behavior-Aware Time-Frequency Resource Conversion

被引:4
|
作者
Shan, Hangguan [1 ]
Ni, Zhifeng [2 ]
Zhuang, Weihua [3 ]
Huang, Aiping [1 ]
Wang, Wei [1 ]
机构
[1] Zhejiang Univ, Dept Informat Sci & Elect Engn, Hangzhou 310027, Peoples R China
[2] MicroStrategy, Hangzhou 310012, Zhejiang, Peoples R China
[3] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada
基金
加拿大自然科学与工程研究理事会; 中国国家自然科学基金;
关键词
Time-frequency resource conversion; context-aware resource allocation; user behavior; virtual spectrum hole; call admission control; call-level performance; CELLULAR NETWORKS; ADMISSION CONTROL; WIRELESS; ALLOCATION; DYNAMICS; QUALITY; RADIO;
D O I
10.1109/TWC.2014.2329912
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, to address network congestion stemmed from traffic generated by advanced user equipment, we propose a novel network resource allocation strategy, i.e., time-frequency resource conversion (TFRC), via exploiting user behavior, a specific kind of context information. The key idea is to use radio resources mainly on the traffic/connection to which a user pays attention. The TFRC withdraws spectrum resources strategically from connection(s) not focused on by the user, providing reuseable spectrum called "virtual spectrum hole". Considering an LTE-type cellular network, a double-threshold guard channel policy is proposed to facilitate the implementation of TFRC. An analytical model is established to study benefits of exploiting TFRC in terms of call-level performance, including new call blocking, handoff call dropping, and recovering call dropping probabilities. Numerical results demonstrate the effectiveness of the proposed approach, in increasing the cell capacity (maximum user number per cell) while limiting potential service quality degradation introduced by the newly proposed technique.
引用
收藏
页码:6809 / 6823
页数:15
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