| A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications |
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| 作者姓名： | HUANG Fei ZHU Li-dong WU Shi-qi |
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| 作者单位： | National Key Laboratory of Communication, University of Electronic Science and Technology of China Chengdu 610054 China |
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| 摘 要： | A novel bandwidth allocation strategy and a connection admission control technique arc 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 rcal-time connections while keeping resource utilization high.
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| 关 键 词： | 多媒体LEO卫星通信 概率基传输策略 传输管理 低轨地球卫星 服务质量 |
| 收稿时间： | 2005-12-06 |
A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications |
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| HUANG Fei ZHU Li-dong WU Shi-qi.A Novel Probability-Based Handoff Strategy for Multimedia LEO Satellite Communications[J].Journal of Electronic Science Technology of China,2007,5(1):7-12. |
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| Authors: | HUANG Fei ZHU Li-dong WU Shi-qi |
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| 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. |
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| Keywords: | handoff management low earth orbit satellite multimedia networks quality of service |
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