【摘要】：由于無線信道的復(fù)雜特性,使得無線多跳自組網(wǎng)在實際應(yīng)用中的可靠、可用性和實時性均難以得到有效保障.對此,提出了面向時延約束下最大化帶寬利用率的集中式多跳自組網(wǎng)絡(luò)協(xié)議參數(shù)設(shè)計策略.基于無線多跳網(wǎng)絡(luò)集中式通信調(diào)度機制,在網(wǎng)絡(luò)參數(shù)、業(yè)務(wù)參數(shù)、協(xié)議參數(shù)的基礎(chǔ)上充分考慮信道參數(shù)帶來的影響,建立端對端時延模型和帶寬利用率模型.數(shù)值仿真結(jié)果表明,集中式調(diào)度機制更適用于節(jié)點規(guī)模較小的多跳自組網(wǎng)絡(luò).基于上述模型增加時延約束確定網(wǎng)絡(luò)規(guī)模,以最大化控制時隙利用率為目標(biāo)設(shè)計協(xié)議參數(shù),使網(wǎng)絡(luò)帶寬利用率在滿足時延約束的前提下最優(yōu).
[Abstract]:Due to the complexity of wireless channel, the reliability of wireless multi-hop ad hoc networks in practical applications is difficult to effectively guarantee the availability and real-time performance of wireless multi-hop ad hoc networks. In this paper, a centralized multi-hop ad hoc network protocol parameter design strategy is proposed to maximize bandwidth utilization under delay constraints. Based on the centralized communication scheduling mechanism of wireless multi-hop network, the end-to-end delay model and bandwidth utilization model are established based on the network parameters, service parameters and protocol parameters. Numerical simulation results show that the centralized scheduling mechanism is more suitable for multi-hop ad hoc networks with smaller nodes. Based on the above-mentioned model, the network size is determined by adding delay constraints, and the protocol parameter is designed to maximize the utilization ratio of control time slot, so that the bandwidth utilization ratio of the network can be optimized under the premise of satisfying the delay constraint.
【作者單位】： 北京交通大學(xué)電子信息工程學(xué)院;通信網(wǎng)信息傳輸與分發(fā)技術(shù)重點實驗室;
【基金】：國家自然科學(xué)基金項目(61371068) 通信網(wǎng)信息傳輸與分發(fā)技術(shù)重點實驗室開放課題(KX162600033)項目
【分類號】：TN92
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本文編號：2453240