Efficient vehicular content delivery
- PDF / 1,108,412 Bytes
- 21 Pages / 439.37 x 666.142 pts Page_size
- 5 Downloads / 194 Views
Efficient vehicular content delivery Shaohao Cai 1 & Xiaonan Wang 1 Received: 21 September 2019 / Revised: 27 May 2020 / Accepted: 13 July 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract
Nowadays, most of the traffic in vehicular networks is relevant to content, so the content-torequester method could be an ideal solution for vehicular content delivery. However, due to the features of vehicular networks such as high mobility, the content-to-requester paradigm might cause the frequent content delivery failures and increase the content delivery cost. Inspired by the idea that the address-based mechanism can support mobility and reduce content delivery costs, we are motivated to take advantage of the address-based mechanism to achieve the content-to-requester paradigm. Based on this motivation, we propose a vehicular content delivery scheme with mobility support (VCDM). In VCDM, the receiver and provider handovers are achieved so that a receiver can correctly receive the requested content from a provider via one successful content delivery process. Moreover, a location-based address is proposed so that a requester can acquire the content from the nearest provider in a unicast way. Finally, VCDM is analyzed and evaluated, and the data show that VCDM effectively improves the content delivery success rate and reduces the content delivery cost and latency. Keywords Vehicular networks . Content delivery . Receiver . Provider . Mobility support
1 Introduction The vehicular network has been taking a significant role in everyday life since it can provide informative content [14]. Nowadays, most of the vehicular traffic is relevant to content, so communications over vehicular networks focus on content itself more than its provenance [20, 25, 8]. Content-centric networking (CCN) [13] presents a novel content-to-requester delivery method. In the paradigm, a requester broadcasts a content request (Interest) with the name of the requested content, and any provider receiving the request returns a content response (Data) with the desired content to the requester. A content request is forwarded towards potential providers based on forwarding entries. In the meanwhile, reverse paths are established by keeping track of the forwarded requests so that a content response can be returned to a
* Xiaonan Wang [email protected]
1
Changshu Institute of Technology, Changshu, Jiangsu 215500, People’s Republic of China
Multimedia Tools and Applications
requester. Since this paradigm only focuses on content itself regardless of its providers, it could be an ideal solution for vehicular content delivery [3, 16]. The basic content-centric model proposed by Van Jacobson [13] is not specifically designed for vehicular networks because in the model content routers are static and the number of content routers is small. Consequently, the content-centric model might not work well in vehicular scenarios because a large number of mobile vehicles assume the roles of content routers and perform forwarding and routing
Data Loading...
