Centralized Channel Allocation Technique to Alleviate Exposed Terminal Problem in CSMA/CA-Based Mesh Networks - Solution Employing Chromatic Graph Approach -
Centralized Channel Allocation Technique to Alleviate Exposed Terminal Problem in CSMA/CA-Based Mesh Networks - Solution Employing Chromatic Graph Approach -
复制标题
集中式信道分配技术可缓解基于 CSMA/CA 的网状网络中的暴露终端问题 - 采用色谱图方法的解决方案 -
DOI：
10.1093/ietcom/e88-b.3.958
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Y. Matsumoto
中科院分区：
文献类型：
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作者：
A. Fujiwara;Y. Matsumoto
本文提出了一种信道分配原则，防止TCP吞吐量下降的多跳传输在网状网络的基础上的载波侦听多址接入与冲突避免（CSMA/CA）MAC协议。我们首先解决无线节点的网络拓扑结构和TCP吞吐量下降的计算机模拟的基础上的关系。信道分配的原则进行了讨论，在分辨率到着色问题的基础上吞吐量下降。建议的信道分配原则所需的信道的数量进行评估，结果表明，两个信道是足够的96%以上的模拟多跳模式。所提出的信道分配原则可扩展到一般的网状网络。我们还阐明了网状网络所需的通道数量。仿真结果表明，当节点数小于10时，在一般的网状网络中，三个信道就足以满足98%以上的模式。
This paper proposes a channel allocation principle that prevents TCP throughput degradation in multihop transmissions in a mesh network based on the carrier sense multiple access with collision avoidance (CSMA/CA) MAC protocol. We first address the relationship between the network topology of wireless nodes and the TCP throughput degradation based on computer simulations. The channel allocation principle is discussed in terms of resolution into a coloring problem based on throughput degradation. The number of required channels for the proposed channel allocation principle is evaluated and it is shown that two channels are sufficient for more than 96% simulated multihop patterns. The proposed channel allocation principle is extendable to generic mesh networks. We also clarify the number of required channels for mesh networks. The simulation results show that three channels are sufficient for more than 98% patterns in the generic mesh networks when the number of nodes is less than 10.