| 一种IEEE802.16e系统中减少切换时延的新策略 |
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| 引用本文： | 李容,巫华芳. 一种IEEE802.16e系统中减少切换时延的新策略[J]. 郑州大学学报(自然科学版), 2010, 0(1): 78-81 |
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| 作者姓名： | 李容 巫华芳 |
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| 作者单位： | [1]茂名学院理学院,广东茂名525000 [2]赣南师范学院数学与计算机科学学院,江西赣州341000 |
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| 摘 要： | 针对IEEE 802.16e系统中用户在切换时,竞争目标基站广播轮询的上行测距Ranging资源会造成较大时延,提出了一种新策略,即目标基站用多播轮询代替广播轮询分配上行Ranging资源给切换用户.仿真结果表明,采用新策略可以减少用户的切换时延,并且这种性能改善的效果在切换用户比较多的情况下更加明显.
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| 关 键 词： | 802.16e系统 切换 多播轮询 测距 时延 |
New Strategy of Reducing Handover Delay in IEEE 802.16e Systems |
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| Affiliation: | LI Rong, WU Huan-fang(1. School of Science, Maoming University, Maoming 525000,China;2. School of Mathematics ＆ Computer Science, Gannan Normal University, Ganzhou 341000,China) |
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| Abstract: | Since the users contend for the uplink Ranging resource, which is allocated by the target base station （BS） based on the broadcast polling during handover process in the IEEE 802.16e systems, so that large delay is generated, a new strategy is proposed. That is, the target BS allocates the uplink Ranging resource based on multicast polling instead of broadcast polling. The simulation results show that the new strategy reduces the handover delay of users. And this effect of performance improvement is especially obvious in the case of more handover users. |
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| Keywords: | 802.16e system handover multicast polling Ranging delay |
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