| 切换保留信道与新呼叫排队相结合的LEO星座通信系统信道分配方案研究 |
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| 引用本文： | 李广侠,郦苏丹,冯少栋.切换保留信道与新呼叫排队相结合的LEO星座通信系统信道分配方案研究[J].通信学报,2006,27(9):135-140. |
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| 作者姓名： | 李广侠 郦苏丹 冯少栋 |
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| 作者单位： | 1. 解放军理工大学,通信工程学院,江苏,南京,210007
2. 国防科技大学,计算机学院,湖南,长沙,410073 |
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| 摘 要： | 提出一种适用于LEO(低轨道)星座通信系统的信道分配方案。该方案为切换呼叫提供了保留信道,降低了切换呼叫的阻塞概率。同时,采取新呼叫排队策略抑制保留信道引起的新呼叫阻塞概率的恶化,如果正在进行的呼叫离开,队列中的新呼叫可以按照次序获得分配信道。结果表明,该方案可以显著降低切换呼叫阻塞概率,并使新呼叫阻塞概率得到改善。
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| 关 键 词： | 卫星通信 卫星星座 信道 切换 |
| 文章编号： | 1000-436X（2006）09-0135-06 |
| 收稿时间： | 2005-12-16 |
| 修稿时间： | 2006-07-31 |
Channel assigning scheme study in LEO constellation communication system combining handover reserving strategy and new call queuing |
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| LI Guang-xia,LI Su-dan,FENG Shao-dong.Channel assigning scheme study in LEO constellation communication system combining handover reserving strategy and new call queuing[J].Journal on Communications,2006,27(9):135-140. |
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| Authors: | LI Guang-xia LI Su-dan FENG Shao-dong |
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| Affiliation: | 1. Institute of Communication Engineering, PLA University of Science and Technology, Nanjing 210007, China; 2. School of Computer Science, National University of Defense Technology, Changsha 410073, China |
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| Abstract: | A channel assigning scheme which was adapted to LEO constellation communication system was proposed. The scheme provided reserved channel for handover call to reduce blocking probability of handoff call.Meanwhile, new call queuing strategy was adopted to restrain new call balockage deterioration caused by reserving scheme. When there was a departure of ongoing call, new call in queue could obtain channel assigning priority-ranked. It is shown that the scheme can reduce the handoff call blocking probability observably, and new call blocking probability is improved at the same time. |
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| Keywords: | statellite communication satellite constellation channel handoff |
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