發(fā)布時(shí)間：2018-04-20 03:00

  本文選題：衛(wèi)星網(wǎng)絡(luò) + 信道分配��； 參考：《系統(tǒng)仿真學(xué)報(bào)》2014年12期

【摘要】：在衛(wèi)星網(wǎng)絡(luò)中,針對(duì)低軌衛(wèi)星存儲(chǔ)容量小、與同步軌道衛(wèi)星可通時(shí)間有限等特點(diǎn),提出了一種新的信道分配算法,該算法通過(guò)衛(wèi)星任務(wù)優(yōu)先級(jí)、衛(wèi)星存儲(chǔ)剩余量和衛(wèi)星可通時(shí)間剩余量三個(gè)因素的權(quán)重分配確定衛(wèi)星優(yōu)先級(jí),當(dāng)同步軌道衛(wèi)星無(wú)可用信道且存在低軌衛(wèi)星呼叫時(shí),在滿(mǎn)足門(mén)限閾值約束條件下,高優(yōu)先級(jí)呼叫衛(wèi)星實(shí)施信道搶占。仿真數(shù)據(jù)結(jié)果表明,提出的算法保證了緊急衛(wèi)星數(shù)據(jù)的實(shí)時(shí)傳輸,有效地避免了衛(wèi)星內(nèi)存溢出、數(shù)據(jù)丟失現(xiàn)象,滿(mǎn)足衛(wèi)星通信需求。
[Abstract]:In the satellite network, a new channel assignment algorithm is proposed to solve the problem of low storage capacity and limited access time between Leo satellite and synchronous orbit satellite, which is based on the priority of satellite task. The weight distribution of three factors, satellite storage residue and satellite passable time residue, determines the satellite priority. When the synchronous orbit satellite has no available channel and there is a Leo satellite call, the threshold threshold constraint condition is satisfied. High priority calling satellites implement channel preemption. The simulation results show that the proposed algorithm can ensure the real-time transmission of emergency satellite data, effectively avoid satellite memory overflow and data loss, and meet the needs of satellite communication.
【作者單位】： 大連大學(xué)通信與網(wǎng)絡(luò)重點(diǎn)實(shí)驗(yàn)室;大連理工大學(xué)電子信息與電氣工程學(xué)部;
【基金】：國(guó)家863高技術(shù)項(xiàng)目(2011AAXX)
【分類(lèi)號(hào)】：TN927.2
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本文編號(hào)：1775916