Enhancing Interest Forwarding for Fast Recovery from Unanticipated Data Access Failure in NDN

作     者：Xiaoyan Hu Xuhui Liu Lixia Zhao Jian Gong Guang Cheng 

作者机构：School of Cyber Science & Engineering Southeast University Nanjing 211189 China Key Laboratory of Computer Network and Information Integration of Ministry of Education Southeast University Nanjing China Key Laboratory of Computer Network Technology of Jiangsu Province Nanjing China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2019年第16卷第7期

页      面：120-130页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported in part by the National Natural Science Foundation of China (No.61602114) part by the National Key Research and Development Program of China (2017YFB0801703) part by the CERNET Innovation Project (NGII20170406) part by Jiangsu Provincial Key Laboratory of Network and Information Security (BM2003201) 

主　　题：named data networking interest aggregation multipath forwarding data access failure negative acknowledgement 

摘      要：We show that an aggregated Interest in Named Data Networking (NDN) may fail to retrieve desired data since the Interest previously sent upstream for the same content is judged as a duplicate one and then dropped by an upstream node due to its multipath forwarding. Furthermore, we propose NDRUDAF, a NACK based mechanism that enhances the Interest forwarding and enables Detection and fast Recovery from such Unanticipated Data Access Failure. In the NDN enhanced with NDRUDAF, the router that aggregates the Interest detects such unanticipated data access failure based on a negative acknowledgement from the upstream node that judges the Interest as a duplicate one. Then the router retransmits the Interest as soon as possible on behalf of the requester whose Interest is aggregated to fast recover from the data access failure. We qualitatively and quantitatively analyze the performance of the NDN enhanced with our proposed NDRUDAF and compare it with that of the present NDN. Our experimental results validate that NDRUDAF improves the system performance in case of such unanticipated data access failure in terms of data access delay and network resource utilization efficiency at routers.