Summary cache: a scalable wide-area Web cache sharing protocol
Proceedings of the ACM SIGCOMM '98 conference on Applications, technologies, architectures, and protocols for computer communication
A performance comparison of multi-hop wireless ad hoc network routing protocols
MobiCom '98 Proceedings of the 4th annual ACM/IEEE international conference on Mobile computing and networking
Computer Networks and ISDN Systems - Selected papers of the 3rd international caching workshop
The broadcast storm problem in a mobile ad hoc network
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
A cooperative cache architecture in support of caching multimedia objects in MANETs
WOWMOM '02 Proceedings of the 5th ACM international workshop on Wireless mobile multimedia
IEEE Transactions on Knowledge and Data Engineering
Proxy Cache Algorithms: Design, Implementation, and Performance
IEEE Transactions on Knowledge and Data Engineering
Cooperative Caching in Ad Hoc Networks
MDM '03 Proceedings of the 4th International Conference on Mobile Data Management
Multipoint Relaying for Flooding Broadcast Messages in Mobile Wireless Networks
HICSS '02 Proceedings of the 35th Annual Hawaii International Conference on System Sciences (HICSS'02)-Volume 9 - Volume 9
Replica allocation methods in ad hoc networks with data update
Mobile Networks and Applications
Peer-to-Peer Cooperative Caching in Mobile Environments
ICDCSW '04 Proceedings of the 24th International Conference on Distributed Computing Systems Workshops - W7: EC (ICDCSW'04) - Volume 7
Supporting Cooperative Caching in Ad Hoc Networks
IEEE Transactions on Mobile Computing
COACS: A Cooperative and Adaptive Caching System for MANETs
IEEE Transactions on Mobile Computing
Exploiting In-Zone Broadcasts for Cache Sharing in Mobile Ad Hoc Networks
IEEE Transactions on Mobile Computing
IEEE Journal on Selected Areas in Communications
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Data caching is a popular technique that improves data accessibility in wired or wireless networks. However, in mobile ad hoc networks, improvement in access latency and cache hit ratio may diminish because of the mobility and limited cache space of mobile hosts (MHs). In this paper, an improved cooperative caching scheme called group-based cooperative caching (GCC) is proposed to generalize and enhance the performance of most group-based caching schemes. GCC allows MHs and their neighbors to form a group, and exchange a bitmap data directory periodically used for proposed algorithms, such as the process of data discovery, and cache placement and replacement. The goal is to reduce the access latency of data requests and efficiently use available caching space among MH groups. Two optimization techniques are also developed for GCC to reduce computation and communication overheads. The first technique compresses the directories using an aggregate bitmap. The second employs multi-point relays to develop a forwarding node selection scheme to reduce the number of broadcast messages inside the group. Our simulation results show that the optimized GCC yields better results than existing cooperative caching schemes in terms of cache hit ratio, access latency, and average hop count.