期刊名称：International Journal of Engineering and Computer Science
印刷版ISSN：2319-7242
出版年度：2016
卷号：5
期号：2
页码：15677-15680
DOI：10.18535/ijecs/v5i2.5
出版社：IJECS
摘要：The dropped-call rate (DCR) is the fraction of the telephone calls which, due to technical reasons, were cut off beforethe speaking parties had finished their conversational tone and before one of them had hung up (dropped calls) This fraction isusually measured as a percentage of all .CDR is defined as the ratio of abnormal disconnect of calls to total calls established. Theperformance of a TSP relating to call drop is assessed through this parameter. The benchmark set by TRAI for CDR is <2%.Sincethe CDR for the service area as a whole does not reveal the extent of number of areas or localities where the CDR is poor, theAuthority is monitoring another parameter called “Worst affected cells” in which the call drop rate exceeds 3% during cell busyhour, averaged over a month for a service area ” provides a much more localised view of the network. In this paper we havesuggested a forced handoff method (Directed Retry)for cells going down due to weak transmission plan or other reason toreduce call drops
