The International Arab Journal of Information Technology (IAJIT)


A Novel Distance Based Relocation Mechanism to Enhance the Performance of Proxy

  Accessing the  World  Wide  Web  with  the wireless devi ces has been the promising technology for the past few years.  Interruption  in  World  Wide  Web  access  during  handov er  in  a  cellular  network  can  be  avoided  by  relocating  in  advance  the  proxy cache to the target base station before the h andover using the path prediction algorithm. To red uce the cache overhead  in  the  handover,  this  paper  proposes  a  “distance  ba sed  relocation”  mechanism,  in  which  the  cache  of  th e  base  station  is  relocated  once  the  mobile  unit  reaches  the  relocati on  point  in  the  cell.  This  mechanism  estimates  the  time  at  which  the  relocation has to be done by keeping track of the d istance between the mobile terminal and the base st ation.      

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[16] Zapala D., Multicast Routing Support for Real Time Applications, Technical Document, Los Angels, 1997. 0 20 40 60 80 100 120 140 160 180 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Number of cells visited Total Cache overhead in predicted basestation before handover Distance based Relocation CRT based Relocation Immediate Relocation A Novel Distance Based Relocation Mechanism to Enhance the Performance of Proxy Cache in a Cellular Network 263 Mala Chelliah obtained her BE (HONS.) with university rank in electronics and communication engineering from Government College of Engineering, Tirunelveli, Madurai Kamaraj University, Tamil Nadu in 1987 and completed her post graduation in computer science and engineering at National Institute of Technology, Tiruchirappalli (formerly Regional Engineering College) in the year 1990. Govindaram N. received his M.Tech in computer science and engineering from National Institute of Technology in the year 2005. He worked as development specialist for two years in SAP Labs India Pvt ltd, Bangalore where he specialized in SAP NetWeaver department of computer. Nagamaputhur Gopalan received his MSc degree with University rank from Madras University in 1978 and PhD in applied mathematics from Indian Institute of Science, Bamgalore, in 1983. Currently, he is the professor in the applications in The National Institute of Technology. 501 The International Arab Journal of Infor mation Technology, Vol. 6, No. 3, July 2009