重庆邮电大学学报（自然科学版）2017，Vol.29Issue(6)：717-725,9.DOI:10.3979/j.issn.1673-825X.2017.06.002
基于路径可用性约束的HOWBAN备份路由策略
Backup routing strategy based on path availability constraints for HOWBAN
摘要
Abstract
Backup route selection is not only the issue of selecting the irrelevant paths,but the needs of the resources for recovery and backup resource utilization should be also taken into account.For this problem,the matching relationship between the availability of the cross-domain transmission path and the demand for path availability is established under hybrid optical wireless broadband access networks,two constraints are divided into optical and wireless domains according to the matching result,based on the constructed conditional constraint model the backup bandwidth can be selectively reserved.In order to improve the utilization rate of heterogeneous network resources,the bandwidth is divided into working bandwidth,backup bandwidth and free bandwidth,under the principle of shared backup and incremental optimization,the working path is protected in the order of backup bandwidth and free bandwidth,thereby with minimal free bandwidth consumption can ensure connection availability.Numerical results show that the proposed strategy effectively improves the network fault recovery rate and backup resource efficiency.关键词
光无线混合宽带接入网/备份路由/条件约束模型/渐进优化Key words
hybrid optical wireless broadband access networks/backup route/conditional constraint model/incremental optimization分类
信息技术与安全科学引用本文复制引用
邹虹,钟洋..基于路径可用性约束的HOWBAN备份路由策略[J].重庆邮电大学学报（自然科学版）,2017,29(6):717-725,9.基金项目
国家自然科学基金资助项目(61371097,61401052,61271261) （61371097,61401052,61271261）
重庆市青年科技人才培养计划(CSTC2014KJRC-QNRC)The National Science Foundation of China(61371097,61401052,61271261) （CSTC2014KJRC-QNRC）
The Chongqing Youth Science and Technology Talent Training Program(CSTC2014KJRC-QNRC) （CSTC2014KJRC-QNRC）
