多跳Ad hoc網絡中支持MIMO的拓撲未知預約時分多址接入協議
Topology-Transparent Reservation Time Division Multiple Access in Multihop Ad hoc Networks with MIMO Links
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摘要: 該文提出適合多跳Ad hoc網絡的支持MIMO的拓撲未知預約時分多址接入協議。通過預約，每個節(jié)點在其分配的無沖突時隙并行發(fā)送最大數據流，并以一定概率利用其分配時隙中的沖突時隙和未分配時隙中的空閑時隙而發(fā)送一部分數據流。該協議不需知道全網拓撲結構，便于實現和分布式應用。通過理論分析推導出最小通過率及最佳幀長。結果表明該協議具有對網絡拓撲的穩(wěn)定性。Abstract: A topology-transparent Time Division Multiple Access (TDMA) with reservation for MIMO link is proposed for multi-hop Ad hoc networks in this paper. By reservation each node transmits simultaneously all data streams in its assigned collision-free slots and utilizes free slots among other non-assigned slots and its assigned collision slots by probability to transmit a part of all data streams. The protocol is suitable for distributed application since it need not know the whole network topology information. Through theoretical analysis, the minimum throughput and optimal frame length are derived. The results show that the protocol is robust to topology change.
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