多跳Ad hoc網(wǎng)絡(luò)中支持MIMO的拓撲未知預約時分多址接入?yún)f(xié)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(wǎng)絡(luò)的支持MIMO的拓撲未知預約時分多址接入?yún)f(xié)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(shù)據(jù)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(shù)據(jù)流。該協(xié)議不需知道全網(wǎng)拓撲結(jié)構(gòu)，便于實現(xiàn)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(jié)果表明該協(xié)議具有對網(wǎng)絡(luò)拓撲的穩(wěn)定性。
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關(guān)鍵詞:
- MIMO;時分多址接入;拓撲未知;預約;多跳Ad hoc網(wǎng)絡(luò)
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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