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Kanmani, P.
- Improving Data Access Performance in Cluster Based Ad-Hoc Networks
Abstract Views :164 |
PDF Views:3
Authors
Affiliations
1 Department of Computer Science and Engineering, K. S. Rangasamy College of Technology, Tamilnadu, IN
2 Department of Information Technology, K. S. Rangasamy College of Technology, Tamilnadu, IN
1 Department of Computer Science and Engineering, K. S. Rangasamy College of Technology, Tamilnadu, IN
2 Department of Information Technology, K. S. Rangasamy College of Technology, Tamilnadu, IN
Source
Wireless Communication, Vol 4, No 1 (2012), Pagination: 36-43Abstract
The objective of cooperative caching is to improve data availability, improve access efficiency and reduce query delay in mobile Ad-Hoc networks. Many types of cache replacement algorithms like LRU, LFU, LFRU, LRU-MIN and LFU-MIN are used to improve data accessibility and reduce query delay in cluster based cooperative caching in Mobile Ad-Hoc networks. But they have some limitations such as accessing remote information station via multi hop communication leads to longer query latency and causes high energy consumption, many clients frequently access the database server they cause a high load on the server and reduce the server response time .Multi hop communication causes the network capacity degrades when network partition occurs. The paper gives an overview of Cooperative Cache Management Techniques and caching policies and propose a new algorithm can be regarded as a LRFU-MIN (least recently frequently used information with minimal number of page replacements). It discover a data source which induces less communication cost of moving cache blocks into the most recently frequently used position and minimizes caching duplications between neighbor nodes. In this paper we utilize a cross-layer design approach to improve the performance of combined cooperative caching and prefetching schemes. The paper examines the performance using NS-2 simulation environments. The proposed LRFU-MIN enhances the performance of cross-layer cluster based cooperative caching in mobile Ad-Hoc networks when compared with LRU and LFU-MIN.Keywords
Adhoc Networks, Cooperative Caching, Clustering, Data Caching, Information Search.- A Nonblocking Token Ring Based Checkpointing Algorithm for Distributed Mobile Computing Systems
Abstract Views :173 |
PDF Views:1
Authors
Affiliations
1 Deparment of Computer Science, Arignar Anna Government Arts College Attur, Salem Dt Tamil Nadu, IN
2 Department of MCA, K. S. Rangasamy College of Technology, Tiruchengode, Namakkal Dt, Tamil Nadu, IN
1 Deparment of Computer Science, Arignar Anna Government Arts College Attur, Salem Dt Tamil Nadu, IN
2 Department of MCA, K. S. Rangasamy College of Technology, Tiruchengode, Namakkal Dt, Tamil Nadu, IN
Source
Wireless Communication, Vol 1, No 2 (2009), Pagination: 116-120Abstract
Mobile computing introduces new flexibility such as continuous access to computing resources while the users travel.This facility raises new challenges such as fault tolerance in distributed mobile computing system. In this paper we present a non blocking token ring based checkpointing algorithm to tolerate the faults in the mobile computing environment. It is a single phase algorithm neither having the overhead of temporary checkpoints nor using dependency vector; and also it avoids the avalanche effect. Results shows that it outperforms two-phase algorithms.