一種新的支持定向天線應(yīng)用的忙音和功率控制多址接入?yún)f(xié)議
A Novel Power Control Multiple Access Protocol for Mobile Ad hoc Network Using Directional Antennas and Busy Tone
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摘要: 該文針對移動Ad Hoc網(wǎng)絡(luò)(MANET),提出了支持定向天線應(yīng)用的忙音和功率控制多址接入?yún)f(xié)議(BT-DMACP)。協(xié)議充分考慮到定向天線應(yīng)用中存在的特殊隱藏終端問題和旁瓣干擾,利用RTS/CTS短分組對話機制、定向忙音信號和基于信噪比門限的功率控制策略,對數(shù)據(jù)分組的定向發(fā)送功率進行實時調(diào)整。同時為準(zhǔn)確估計接收節(jié)點處的最大干擾功率,設(shè)計了自適應(yīng)干擾功率估計算法。仿真結(jié)果證明,BT-DMACP協(xié)議能有效支持定向天線在MANET中的應(yīng)用,在降低了系統(tǒng)功耗同時,具有很高的信道利用率。
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關(guān)鍵詞:
- 定向天線;功率控制;忙音;多址接入?yún)f(xié)議
Abstract: A Busy Tone and Directional antenna Multiple Access Control Protocol with power control (BT-DMACP) for Mobile Ad hoc NETwork (MANET) is proposed. The special hidden terminal problems and side lobe interference in directional antennas used network are considered. Through RTS/CTS handshake mechanism, directional busy tone signals and the power control method, the directional transmission power of data packets can be adjusted in time. In order to estimation of the maximal interference power supported by receiving node, an adaptive estimation algorithm is presented. Simulation results show that BT-DMACP supports effectively the application of directional antennas and provides higher channel utilization and lower energy consumption. -
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