On Uplink Superposition Coding and Multi-user Diversity for Wireless Mesh Networks
On Uplink Superposition Coding and Multi-user Diversity for Wireless Mesh Networks
复制标题
DOI：
10.1109/msn.2009.17
复制
发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
A. Zubow;Moritz Grauel;Mathias Kurth;J. Redlich
中科院分区：
文献类型：
--
作者：
A. Zubow;Moritz Grauel;Mathias Kurth;J. Redlich
近年来，无线网状网（WMN）得到了研究和工业界的广泛关注。特别是，在社区网络中使用WMN证明了它们能够提供高性能的互联网接入，同时要求很少的部署规划。然而，一个问题变得明显。网络拥塞，特别是网关节点（GN）周围的拥塞，会显著降低整个网络的整体性能。我们提出了一种新的方法，有效地减少网络拥塞，同时保持公平性。为了实现这一目标，我们结合联合收割机两个现代技术，即上行链路叠加编码和多用户分集，以创建一个MAC协议，可以显着提高周围GN的网络吞吐量，从而扩展整个WMN的能力。我们将提出两个分布式协议，这是适合于ad-hoc网络没有任何集中式的基础设施。广泛的分析和模拟将被提出，表明网络吞吐量增加高达88%，超过使用802.11与OAR速率选择算法。在衰落环境中，观察到来自多用户分集的5-13%的额外增益。
In recent years wireless mesh networks (WMN) gained lots of attention in research and industry. Especially, the use of WMNs for community networks proved their ability to provide a high performance Internet access while demanding little deployment planning. However, one problem became apparent. Network congestion, especially around gateway nodes (GN), can dramatically decrease the overall performance of the entire network. We present a novel approach to efficiently decrease network congestion while maintaining fairness. To achieve that goal, we combine two modern techniques, namely uplink superposition-coding and multi-user diversity to create a MAC protocol that can dramatically improve the network throughput around GN, hence extending the capabilities of the entire WMN. We will present two distributed protocols, which are suitable for ad-hoc networks without any centralized infrastructure. Extensive analysis and simulations will be presented, that show a network throughput increase of up to 88% over the use of 802.11 with the OAR rate selection algorithm. In a fading environment an additional gain of 5-13% from multi-user diversity was observed.