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首页> 外文会议>ICCSA 2011;International conference on computational science and its applications >Adaptive Packing Strategy to Reduce Packing Loss in MF-TDMA Satellite Networks
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Adaptive Packing Strategy to Reduce Packing Loss in MF-TDMA Satellite Networks

机译：减少MF-TDMA卫星网络中打包损失的自适应打包策略

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摘要

Multi Frequency-Time Division Multiple Access (MF-TDMA) is a multiple access scheme that has widespread use in multimedia satellite networks. A network control center (NCC) receives capacity requests (CRs) from terminals, then it organizes a terminal burst time plan (TBTP) to be distributed efficiently. This plan informs terminals when (timeslots) and where (carrier) to transmit their traffic. Distributing the resource to the terminals is considered to be a bin packing problem. However, sometimes a packing loss may occur when packing the CRs into a TBTP. This means that even if there is sufficient free space, some of the requested cannot be packed. In particular, this occurs more frequently if a total resource is fully requested. If a packing loss occurs, then the terminal whose bit of CRs is lost must transmit the lost part of the initial CRs again. This causes additional time delay for the terminal. This worsens information quality, since the round trip time (RTT) delay is originally large in a satellite network. In this paper, we address the packing loss phenomenon in MF-TDMA for uplinks of satellite networks. We define first packing loss ratio (PLR) and packing loss probability (PLP), then propose an adaptive packing strategy (APS) to reduce packing loss.
机译：多频分时多址（MF-TDMA）是一种在多媒体卫星网络中得到广泛使用的多址方案。网络控制中心（NCC）从终端接收容量请求（CR），然后组织一个终端突发时间计划（TBTP）以进行有效分配。该计划通知终端何时（时隙）和哪里（载波）传输其业务。将资源分配给终端被认为是箱装箱问题。但是，将CR打包到TBTP中时，有时会出现打包损失。这意味着即使有足够的可用空间，某些请求的内容也无法打包。特别是，如果完全请求总资源，则这种情况会更频繁地发生。如果发生打包丢失，则丢失其CR位的终端必须再次传输初始CR的丢失部分。这导致终端的额外时间延迟。由于往返时间（RTT）延迟最初在卫星网络中很大，因此这会使信息质量变差。在本文中，我们解决了卫星网络上行链路中MF-TDMA中的打包损失现象。我们先定义包装损失率（PLR）和包装损失概率（PLP），然后提出一种自适应包装策略（APS）以减少包装损失。

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