本文選題：適配層 + Mesh-under路由協(xié)議��； 參考：《計(jì)算機(jī)工程》2017年05期

【摘要】：在基于Mesh-under路由的6Lo WPAN網(wǎng)絡(luò)中,鏈路丟失的分片采用端到端的方式進(jìn)行重傳,從而保證數(shù)據(jù)包的可靠重組,但端到端的重傳會(huì)造成較多的數(shù)據(jù)傳輸時(shí)延和網(wǎng)絡(luò)能耗,降低目的端的分片重組成功率,影響網(wǎng)絡(luò)中其他數(shù)據(jù)的有效傳輸。針對(duì)上述問(wèn)題,提出一種基于中間節(jié)點(diǎn)緩存與重傳分片機(jī)制,通過(guò)中間節(jié)點(diǎn)緩存和管理所轉(zhuǎn)發(fā)分片,目的端檢測(cè)到有分片丟失,則利用中間節(jié)點(diǎn)已緩存的分片進(jìn)行重傳,從而達(dá)到提高網(wǎng)絡(luò)性能的目的。仿真結(jié)果表明,與傳統(tǒng)的RIF_SN,RPF_SN等機(jī)制相比,該機(jī)制能耗效用值提高36.7%,網(wǎng)絡(luò)傳輸時(shí)延減少28.7%,目的端重組成功率提高34.9%,明顯改善網(wǎng)絡(luò)性能。
[Abstract]:In the 6Lo WPAN network based on Mesh-under routing, the missing segments of the link are retransmitted by end-to-end mode to ensure the reliable reconfiguration of data packets, but end-to-end retransmission will cause more data transmission delay and network energy consumption. Reduce the success rate of fragment recombination, and affect the effective transmission of other data in the network. In order to solve the above problems, a mechanism based on intermediate node cache and retransmission is proposed. When the intermediate node cache and manage the forwarded segment, the destination detects that the segment is missing, and then retransmits by using the intermediate node cached slice. In order to achieve the purpose of improving network performance. The simulation results show that compared with the traditional RIFS / RPFSN mechanism, the utility value of energy consumption of this mechanism is increased by 36.7%, the transmission delay of the network is reduced by 28.775, the success rate of recombination of the destination end is increased by 34.9%, and the network performance is obviously improved.
【作者單位】： 重慶郵電大學(xué)光通信與網(wǎng)絡(luò)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國(guó)家自然科學(xué)基金(61371097) 國(guó)家物聯(lián)網(wǎng)專項(xiàng)資金項(xiàng)目(工信部科函[2014]351號(hào)) 重慶郵電大學(xué)青年基金(A201293)
【分類(lèi)號(hào)】：TN92

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