Delay Sensitive Communications over Cognitive Radio Networks | |
Wang, Feng ; Huang, Jianwei ; Zhao, Yuping | |
刊名 | ieee transactions on wireless communications
![]() |
2012 | |
关键词 | Admission control Markov decision process Bellman&apos rollout algorithm cognitive radio networks spectrum overlay CALL ADMISSION CONTROL RESOURCE-ALLOCATION SPECTRUM ACCESS s equation |
DOI | 10.1109/TWC.2012.020812.110133 |
英文摘要 | Supporting the quality of service of unlicensed users in cognitive radio networks is very challenging, mainly due to the dynamic resource availability induced by the licensed users' activities. In this paper, we derive the optimal admission control and channel allocation decisions in cognitive overlay networks to support delay sensitive communications of unlicensed users. We formulate it as a Markov decision process problem, and solve it by transforming the original formulation into a stochastic shortest path problem. We then propose a simple heuristic control policy, which includes a threshold-based admission control scheme and and a largest-delay-first channel allocation scheme, and prove the optimality of the largest-delay-first channel allocation scheme. We further propose an improved policy using the rollout algorithm. By comparing the performance of both proposed policies with the upper-bound of the maximum revenue, we show that our policies achieve close-to-optimal performances with low complexities.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000303068900021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Electrical & Electronic; Telecommunications; SCI(E); EI; 14; ARTICLE; 4; 1402-1411; 11 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/152490] ![]() |
专题 | 信息科学技术学院 |
推荐引用方式 GB/T 7714 | Wang, Feng,Huang, Jianwei,Zhao, Yuping. Delay Sensitive Communications over Cognitive Radio Networks[J]. ieee transactions on wireless communications,2012. |
APA | Wang, Feng,Huang, Jianwei,&Zhao, Yuping.(2012).Delay Sensitive Communications over Cognitive Radio Networks.ieee transactions on wireless communications. |
MLA | Wang, Feng,et al."Delay Sensitive Communications over Cognitive Radio Networks".ieee transactions on wireless communications (2012). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论