本文選題：車輛異構(gòu)網(wǎng)絡(luò) + 垂直切換��； 參考：《電子與信息學(xué)報》2017年07期

【摘要】：在帶有噪聲干擾的車輛異構(gòu)網(wǎng)絡(luò)中,針對當(dāng)前基于決策樹的垂直切換算法存在切換精準(zhǔn)性不高的問題,該文詳細分析并給出當(dāng)前算法決策過程中存在的錯誤判決概率,提出一種基于決策樹的穩(wěn)健垂直切換算法。首先,采用卡爾曼濾波算法,根據(jù)網(wǎng)絡(luò)屬性的預(yù)測值和當(dāng)前測量值,并結(jié)合它們各自的噪聲偏差,做出更準(zhǔn)確的網(wǎng)絡(luò)屬性估計。其次,針對少量網(wǎng)絡(luò)屬性值出現(xiàn)在判決門限附近的情況,提出概率閾值區(qū)間法,通過二次檢測提高算法判決的準(zhǔn)確性。仿真結(jié)果表明,所提算法提高了切換判決精準(zhǔn)性和網(wǎng)絡(luò)總吞吐量,降低了乒乓效應(yīng)和切換失敗率,并得到了與傳統(tǒng)算法同階的時間復(fù)雜度性能結(jié)果。
[Abstract]:In the vehicle heterogeneous network with noise interference, aiming at the problem that the current vertical handoff algorithm based on decision tree is not accurate enough, this paper analyzes and gives the error decision probability in the decision-making process of the current algorithm in detail. A robust vertical handoff algorithm based on decision tree is proposed. Firstly, Kalman filtering algorithm is used to estimate the network attributes more accurately according to the network attribute prediction value and the current measurement value, and combining their respective noise deviations. Secondly, a probability threshold interval method is proposed to improve the accuracy of the algorithm. Simulation results show that the proposed algorithm improves the precision of handoff decision and the total throughput of the network, reduces the ping-pong effect and the handoff failure rate, and obtains the performance results of the same order of time complexity as the traditional algorithm.
【作者單位】： 重慶郵電大學(xué)重慶市計算機網(wǎng)絡(luò)與通信技術(shù)重點實驗室;重慶郵電大學(xué)計算機科學(xué)與技術(shù)學(xué)院;
【基金】：國家自然科學(xué)基金(61601070,61271259,61301123,61471076) 重慶市基礎(chǔ)與前沿研計(cstc2016jcyj A0455,cstc2015jcyj A40047) 重慶郵電大學(xué)博士啟動基金(A2014-10,A2015-16)~~
【分類號】：TN713;TN915.0

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