Dynamic Spectrum Access with Preemption in Open Spectrum Wireless Networks

摘要：

Analytical formulations of dynamic spectrum access (DSA) with and without preemption for two radio systems are presented. The DSA without preemption model is solved explicitly using a two-dimensional Markov chain while the DSA with preemption models are solved numerically using a twodimensional Markov chain. Grades of service (GoSs) like system airtime, blocking probabilities and preemption probabilities are considered. The performance of these GoS measures and the effect of the size of the number of frequency channels are evaluated. Numerical results illustrate that higher gain in airtime and zero blocking probability for the prioritized radio system are achieved through preemption of the non-prioritized radio system’s frequency channels.

关键词： Dynamic spectrum access preemption open spectrum wireless networks

作者: David Tung Chong Wong Anh Tuan Hoang Ying-Chang Liang Francois Chin

作者单位: Institute for Infocomm Research,A*STAR Fusionopolis Way,＃21-01 Connexis,Singapore 1138632

会议类型: 国际会议

会议名称: The 11th IEEE International Conference on Communications Systems(第11届电子和电气工程师协会国际通信系统会议)(IEEE ICCS 2008)

会议地点: 广州

会议语种:英文

在线出版日期: 2008-11-19（万方平台首次上网日期，不代表论文的发表时间）