中国电子科技2007，Vol.5Issue(1)：7-12,6.
A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications
A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications
摘要
Abstract
A novel bandwidth allocation strategy and a connection admission control technique are proposed to improve the utilization of network resource and provide the network with better quality of service (QoS) guarantees in multimedia low earth orbit (LEO) satellite networks. Our connection admission control scheme, we call the probability based dynamic channel reservation strategy (PDR), dynamically reserves bandwidth for real-time services based on their handoff probability. And the reserved bandwidth for real-time handoff connection can also be used by new connections under a certain probability determined by the mobility characteristics and bandwidth usage of the system. Simulation results show that our scheme not only lowers the call dropping probability (CDP) for Class I real-time service but also maintains the call blocking probability (CBP) to certain degree. Consequently, the scheme can offer very low CDP for real-time connections while keeping resource utilization high.关键词
handoff management/low earth orbit satellite/multimedia networks/quality of serviceKey words
handoff management/low earth orbit satellite/multimedia networks/quality of service分类
电子信息工程引用本文复制引用
HUANG Fei,ZHU Li-dong,WU Shi-qi..A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications[J].中国电子科技,2007,5(1):7-12,6.基金项目
Supported by the National Natural Science Foundation of China (No. 60496313) （No. 60496313）
