An Efficient Cache Management using Adaptive Buffer Mechanism in MANET  
  Authors : Rukmini Bhat B.

 

In a mobile environment, as a mobile node moves from one point of attachment to another during an ongoing application it is subjected to packet loss due to network and storage capacity. Such packet loss affects the quality of ongoing communication session. Ability to control the buffer dynamically provides a reasonable trade-off between delay and packet loss, which is within the threshold limit for realtime communications. So first demonstrate that the default use of static buffers in mobile environment leads to either undesirable channel under utilization or unnecessary high delays, which motivates the use of dynamic buffer sizing. We propose an adaptive sizing algorithm which is demonstrated to be able to maintain high throughput efficiency whilst achieving low delay. We evaluate our system using NS2 simulation, and the results demonstrate the feasibility and efficiency of our proposed scheme in terms of consistency ratio, delay, and overhead.

 

Published In : IJCAT Journal Volume 1, Issue 4

Date of Publication : 31 May 2014

Pages : 10 - 15

Figures : 07

Tables : 02

Publication Link : IJCAT-2014/1-4/An Efficient Cache Management using Adaptive Buffer Mechanism in MANET

 

 

 

Rukmini Bhat B. : Is a M.Tech Student of Computer Science & Engineering Department of SDIT, Mangalore. She graduated with BE (Honours’) in Computer Science & Engineering, affiliated to VTU university. She is currently pursuing her Masters in Computer Science & engineering at SDIT (Shree Devi College of Engineering).Her research Areas are Computer Networks, and Mobile Computing.

 

 

 

 

 

 

 

MANETs

data caching

buffering

packet loss

TTL

The proposed scheme can minimize dropping of packets and query delay in the distributed cache invalidation mechanism and reduces the network traffic. In addition, we have adopted the adaptive buffering technique in Cache Node to avoid the dropping of packets in mobile environment , thus improving the performance of the system and minimizes the contention in the network. The extensive results have demonstrated that, in comparison with the existing methods, our proposed scheme is more effective and efficient in accessing the data, reducing response time and improving the Performance of the system. For future work, we can investigate more sophisticated TTL algorithms for life time of the data and selection of Query directories are dynamic so that requesting node gets the data without delay.

 

 

 

 

 

 

 

 

 

[1] H.Artail, H.Safa, K.Mershad, Z.Abou-Atme, and N.Sulieman, “COACS: A Cooperative and Adaptive Caching System for MANETS,” IEEE Trans. Mobile Computing, vol. 7, no. 8, pp. 961- 977, Aug. 2008

[2] Kassem fawaz, student member, ieee, and Hassan artail, senior member, ieee “Distributed Cache Invalidation Method For Maintaining Cache Consistency In Wireless Mobile Networks” IEEE Transactions On Mobile Computing, Vol. 12, No. 4, April 2013

[3] P. Cao and C. Liu, “Maintaining Strong Cache Consistency in the World-Wide Web,” IEEE Trans. Computers, vol. 47, no. 4, pp. 445- 457, Apr. 1998.

[4] G. Cao, “On Improving the Performance of Cache Invalidation in Mobile Environments,” ACM/Kluwer Mobile Network and Applications, vol. 7, no. 4, pp. 291-303, 2002.

[5] Tianji Li and Douglas Leith,“Adaptive Buffer Sizin for TCP Flows in 802.11e WLANs”.

[6] Rochlani, Yogesh R., and A. R. Itkikar. "Integrating Heterogeneous Data Sources Using XML Mediator." International journal of computer science and network 3 (2012).

[7] T. Hara and S. Madria, “Dynamic Buffer control in Mobile Ad Hoc Networks,” Proc. Database Systems for Advanced Applications, pp. 111-136, 2004.

[8] J. Jung, A.W. Berger, and H. Balakrishnan, “Modeling TTL-Based Internet Caches,” Proc. IEEE INFOCOM, Mar. 2003.

[9] K. Mershad and H. Artail, “SSUM: Smart Server Update Mechanism for Maintaining Cache Consistency in Mobile Environments,” IEEE Trans. obile Computing, vol. 9, no. 6, pp. 778-795, June 2010.

[10] X. Tang, J. Xu, and W-C. Lee, “Analysis of TTLBased Consistency in Unstructured Peer-to-Peer Networks,” IEEE Trans. Parallel and Distributed Systems, vol. 19, no. 12, pp. 1683-1694, Dec. 2008.

[11] L. Bright, A. Gal, and L. Raschid, “Adaptive Pull- Based Policies for Wide Area Data Delivery,” ACM Trans. Database Systems, vol. 31, no. 2, pp. 631-671, 2006.

[12] M. Denko, J. Tian, "Cooperative Caching with Adaptive Prefetching in Mobile Ad Hoc Networks," IEEE WiMob'2006, pp.38-44, June 2006.

[13] B. Krishnamurthy, C. Wills, “Study of piggyback cache validation for proxy caches in the World Wide Web,”USENIX, Monterey, CA, December1997.