Performance of Dynamic Logical Macro Cell and Parallel Polling to Support Smooth Handover to Fast Movers in Microcellular Networks
Performance of Dynamic Logical Macro Cell and Parallel Polling to Support Smooth Handover to Fast Movers in Microcellular Networks
复制标题
动态逻辑宏小区和并行轮询的性能支持微蜂窝网络中向快速移动者的平滑切换
DOI：
10.1109/icc.2008.914
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Takahiko Yamada
中科院分区：
文献类型：
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作者：
P. T. Hoa;Takahiko Yamada
本文评估了如何并行轮询和LMC（逻辑宏小区）设计操作在微蜂窝MM-MAN（移动的多媒体城域网）可以提供高比特率的分组传输到快速移动的终端（FMT）。LMC将多播组中的若干相邻微小区分组为虚拟单个宏小区。当LMC切换到新BS时，LMC总是与FMT的运动一起切换。发往移动的用户的数据包在LMC内进行多播。从LMC的每个微小区BS发射一组轮询信号，以允许在LMC覆盖范围内向FMT传送分组和从FMT传送分组。如果FMT接收到并应答从新BS发送的轮询，则完成微小区之间的切换，否则它继续处理与当前BS的连接。需要将轮询响应多播到LMC内的每个微小区BS以同步发送轮询。因此，FMT在LMC中的微小区之间的移动就像在一个更大的虚拟小区中一样，这使得FMT的切换变得简单和平滑。我们的仿真结果表明，并行轮询和动态LMC工作良好，提供一个快速的移动的用户在微蜂窝环境中的低切换延迟，高吞吐量和无端到端延迟的平滑的高数据速率连接。使用OMNeT++模拟器进行评估。
This paper evaluates how the parallel polling and LMC (logical macro cell) designed operating in the micro-cellular MM-MAN (mobile multimedia metropolitan area network) can provide high-bit-rate packet transfer to fast-moving terminals (FMTs). An LMC groups several adjacent micro-cells in a multicast group to a virtual single macro cell. LMC is always switched over together with a motion of FMT when it comes to a new BS. Data packet destined to the mobile users is multicast within an LMC. A set of polling signals is emitted from every micro-cell BS of an LMC to permit packet transferred to and from an FMT within the LMC coverage. Handover between micro-cells is done if FMT receives and answers to a polling sent from a new BS, other wise it continues handling connection with the current BS. Multicast of the polling response to every micro-cell BS within an LMC is required to synchronize sending polling. Therefore, moving of FMT between micro-cells in an LMC likes in one larger virtual cell that makes the handover of FMT become simple and smooth. Our simulation results reveal that the parallel polling and dynamic LMC work well to offer a fast mobile user a smooth high-data rate connection in the microcellular environment with regard to low handover latency, high throughput and no end-to-end delay. The evaluation is done using the OMNeT++ simulator.