1. 长安大学电子与控制工程学院,陕西,西安,710064
2. 西安电子科技大学综合业务网络理论及关键技术国家重点实验室,陕西,西安,710071
3. 长安大学电子与控制工程学院,陕西,西安,710064
4. 西安电子科技大学综合业务网络理论及关键技术国家重点实验室,陕西,西安,710071
网络出版:2016-02-25,
纸质出版:2016
移动端阅览
陈丹, 刘卜华, 闫茂德, 等. MIMO Ad Hoc网络中基于正交阵列的拓扑未知多址接入协议[J]. 电子学报, 2016,44(2):308-318.
CHEN Dan, LIU Bu-hua, YAN Mao-de, et al. Orthogonal Array Based Topology Transparent MAC Protocol for MIMO Ad Hoc Networks[J]. Acta Electronica Sinica, 2016, 44(2): 308-318.
陈丹, 刘卜华, 闫茂德, 等. MIMO Ad Hoc网络中基于正交阵列的拓扑未知多址接入协议[J]. 电子学报, 2016,44(2):308-318. DOI: 10.3969/j.issn.0372-2112.2016.02.010.
CHEN Dan, LIU Bu-hua, YAN Mao-de, et al. Orthogonal Array Based Topology Transparent MAC Protocol for MIMO Ad Hoc Networks[J]. Acta Electronica Sinica, 2016, 44(2): 308-318. DOI: 10.3969/j.issn.0372-2112.2016.02.010.
针对支持MIMO(Multiple Input Multiple Output)的Ad Hoc网络
提出了基于正交阵列的拓扑未知多址接入协议MIMO_O_TTMA(MIMO Supported Orthogonal Array Based Topology Transparent Multiple Access).协议利用正交阵列为节点分配若干时隙
在每个分配时隙中
节点通过与目的节点交互RTS/CTS(Request To Send/Clear To Send)分组来确定发送的数据流数
以机会地利用MIMO的空间复接来提升网络性能.MIMO_O_TTMA在保证节点在一帧内至少有一个时隙能够无干扰地传输的基础上
允许协议的帧长能在一定的范围内进行灵活选择
从而为协议性能的优化提供了更为有利的条件.为评估MIMO_O_TTMA的性能
利用概率方法分析了协议的吞吐量性能
数值结果表明
与已有拓扑未知MAC(Media Access Control)相比
MIMO_O_TTMA有效提升了网络吞吐量.
An orthogonal array based topology transparent MAC(Media Access Control) protocol named MIMO_O_TTMA(MIMO Supported Orthogonal Array Based Topology Transparent Multiple Access) is proposed for MIMO(Multiple Input Multiple Output) Ad Hoc networks.The protocol utilizes the orthogonal arrays to assign slots for network nodes
in each assigned slot
the transmitters determine the number of streams to be used by exchanging the RTS/CTS(Request To Send/Clear To Send) packets with their destination nodes
in this way
the nodes can opportunistically use the spatial multiplexing(SM) of MIMO to enhance the network performances.In addition to ensuring at least one collision-free slot in a frame for each node
the MIMO_O_TTMA allows the frame length to be flexibly chosen in certain range
which provides favorable conditions for optimizing the protocol performances.To evaluate the performance the MIMO_O_TTMA
a probability method is used to analysis the throughput of the protocol.Numerical results show that
compared with the existing topology transparent MAC
MIMO_O_TTMA can effectively improves the network throughputs.
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