本文關(guān)鍵詞： 光無線混合寬帶接入網(wǎng) 備份路由 條件約束模型 漸進(jìn)優(yōu)化　出處：《重慶郵電大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年06期 　論文類型：期刊論文

【摘要】：備份路由選取,不僅要考慮路徑的不相關(guān)性,還應(yīng)考慮業(yè)務(wù)恢復(fù)的資源需求以及備份資源利用率。針對(duì)此問題,在光無線混合寬帶接入網(wǎng)的融合架構(gòu)下,確立跨域傳輸路徑可用性與用戶對(duì)路徑可用性需求之間的匹配關(guān)系,根據(jù)匹配結(jié)果分別在光域和無線域劃分出2種約束情形,并由此構(gòu)建用于備份路徑選取的條件約束模型,依據(jù)此模型選擇性預(yù)留備份帶寬。以提高異構(gòu)網(wǎng)絡(luò)資源利用率為目標(biāo),將帶寬資源劃分為工作帶寬、備份帶寬及空閑帶寬,在共享備份原則下,通過漸進(jìn)優(yōu)化的方式,按照備份帶寬、空閑帶寬的先后順序,完成對(duì)工作路徑的保護(hù),從而以盡可能少的空閑帶寬消耗來保障節(jié)點(diǎn)間的連接可用性。數(shù)值結(jié)果表明,提出的策略有效提高了網(wǎng)絡(luò)故障恢復(fù)率和備份資源效率。
[Abstract]:Backup route selection should not only consider the irrelevant path, but also consider the resource requirements of service recovery and backup resource utilization. In view of this problem, in the hybrid optical wireless broadband access network architecture. The matching relationship between cross-domain transmission path availability and users' requirements for path availability is established. According to the matching results, two kinds of constraint cases are divided in the optical domain and wireless domain, respectively. According to this model, the backup bandwidth is selectively reserved, and the bandwidth resources are divided into working bandwidth in order to improve the utilization ratio of heterogeneous network resources. Backup bandwidth and free bandwidth, under the principle of shared backup, through progressive optimization, according to the backup bandwidth, free bandwidth sequence, the completion of the work path protection. The numerical results show that the proposed strategy can effectively improve the network failure recovery rate and backup resource efficiency.
【作者單位】： 重慶郵電大學(xué)重慶高校市級(jí)光通信與網(wǎng)絡(luò)重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(61371097,61401052,61271261) 重慶市青年科技人才培養(yǎng)計(jì)劃(CSTC2014KJRC-QNRC)~~
【分類號(hào)】：TN92
【正文快照】： 0引言網(wǎng)絡(luò)資源趨緊已成業(yè)界共識(shí),如何高效使用有限的帶寬資源愈發(fā)成為研究焦點(diǎn)[1-2]。作為網(wǎng)絡(luò)密集度最高的“最后一公里”接入,亟需一種高效的接入解決方案來緩解帶寬趨緊之勢(shì),光無線混合寬帶接入網(wǎng)(hybrid optical wireless broadband access net-works,HOWBAN)應(yīng)運(yùn)而生,因，

本文編號(hào)：1452157