On-Road Caching Assistance for Ubiquitous Vehicle-Based Information Services

被引：18

作者：

Abdelhamid, Sherin ^{[1
]}

Hassanein, Hossam S. ^{[1
]}

Takahara, Glen ^{[2
]}

机构：

[1] Queens Univ, Sch Comp, Kingston, ON K7L 2N8, Canada

[2] Queens Univ, Dept Math & Stat, Kingston, ON K7L 2N8, Canada

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2015年 / 64卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Caching; content popularity; data delivery; vehicular resources; CENTRIC NETWORKING;

D O I：

10.1109/TVT.2015.2480711

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Smart vehicles are considered major providers of ubiquitous information services. In this paper, we propose a solution for expedited and cost-effective access to vehicular public sensing services. The proposed caching-assisted data delivery (CADD) scheme applies caching on the delivery path of the collected data. Cached information can be used for later interests without having to request similar data from vehicles. For the operation of CADD, we introduce a lightweight road caching spot (RCS) to work as an on-road caching and forwarding assistant. CADD utilizes these caching spots along with vehicles on roads for handling the data collection and delivery processes. The proposed scheme involves a novel caching mechanism that utilizes real-time information for selecting the caching RCSs while considering popularity in cache replacement. A data chunk to be replaced may be forwarded to another less-loaded RCS. CADD considers vehicles' headings to direct communication toward the destination. Mathematical analysis and a simulation-based evaluation of the scheme are conducted. The evaluation results show significant improvements achieved by CADD in terms of access cost, delivery delay, and packet delivery ratio, compared with other schemes that do not involve caching assistance and do not take vehicles' headings into consideration.

引用

页码：5477 / 5492

页数：16

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