By Topic

Cooperative Cache Invalidation Strategies for Internet-Based Vehicular Ad Hoc Networks

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Sunho Lim ; Dept. of EECS, South Dakota State Univ., Brookings, SD, USA ; Chansu Yu ; Das, C.R.

Internet-based vehicular ad hoc network (IVANET) is an emerging technique that combines a wired Internet and a vehicular ad hoc network (VANET) for providing universal information and service accessibility. A key design optimization technique in IVANETs is to cache the frequently accessed data items in a local storage of vehicles. Since vehicles are not critically limited by the storage/memory space and power consumption, cache replacement scheme for accommodating new data items is not an issue. Rather, a more critical design question is how to keep the cached copies valid or to invalidate them when the original data items are updated. This is particularly important in IVANETs, where vehicles move very fast. This paper proposes state-aware cooperative cache invalidation (CCI) scheme and its enhancement (ECCI) that take advantage of the underlying location management mechanism. Extensive performance study shows that the proposed schemes can reduce the query delay as much as 69% and increase the cache hit rate up to 57% in comparison to two existing cache invalidation techniques, called poll-each-read (PER) and extended asynchronous (EAS). Note that PER and EAS have been modified to work in IVANETs.

Published in:

Computer Communications and Networks, 2009. ICCCN 2009. Proceedings of 18th Internatonal Conference on

Date of Conference:

3-6 Aug. 2009