User Behavior-Aware Scheduling Based on Time-Frequency Resource Conversion

被引:6
|
作者
Shan, Hangguan [1 ]
Zhang, Yani [2 ]
Zhuang, Weihua [3 ]
Huang, Aiping [1 ]
Zhang, Zhaoyang [1 ]
机构
[1] Zhejiang Univ, Zhejiang Prov Key Lab Informat Proc & Commun Netw, Coll Informat Sci & Elect Engn, Hangzhou 310027, Zhejiang, Peoples R China
[2] Meteorol Informat & Network Ctr Zhejiang Prov, Hangzhou 310017, 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
Context-aware resource allocation; competitive ratio; scheduling; time-frequency resource conversion (TFRC); virtual spectrum hole; COMMUNICATION-NETWORKS; WIRELESS NETWORKS; OPPORTUNITIES;
D O I
10.1109/TVT.2017.2696078
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
Time-frequency resource conversion (TFRC) is a recently proposed network resource allocation strategy. By exploiting user behavior, it withdraws and reutilizes spectrum resources strategically from connection(s) not being focused on by the user to relieve network congestion effectively. In this paper, we study downlink scheduling based on TFRC for a Long-Term Evolution (LTE)-type cellular network to maximize service delivery. The service scheduling of interest is formulated as a joint request, channel and slot allocation problem, which is NP-hard. A deflation and sequential fixing based algorithm with only polynomial-time complexity is proposed to solve the problem. For practical implementation, we propose TFRC-enabled low-complexity yet online scheduling algorithms, which integrate prediction-based leaky bucket-like traffic shaping and modified Smith ratio or exponential capacity based utility function. Furthermore, by establishing a charging model for the relationship between TFRC-enabled scheduling and its TFRC-disabled counterpart, we analytically study the benefits of integrating TFRC with scheduling. Simulation results not only verify the analysis of impact of key parameters on the performance improvement but corroborate the benefits of integrating TFRC with scheduling techniques in terms of quality-of-service provisioning and resource utilization as well.
引用
收藏
页码:8429 / 8444
页数:16
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