標題: Failure restoration of mobility databases for personal communication networks
作者: Lin, Yi-Bing
資訊工程學系
資訊科學與工程研究所
Department of Computer Science
Institute of Computer Science and Engineering
公開日期: 1-Sep-1995
摘要: This paper studies failure restoration of mobility databases for personal communication networks (specifically, VLRs and HLRs). We model the VLR restoration with and without checkpointing. The optimal VLR checkpointing interval is derived to balance the checkpointing cost against the paging cost. We also model GSM periodic location updating (location confirmation) to quantify the relationship between the location confirmation frequency and the number of lost calls. The HLR failure restoration procedures for IS-41 and GSM are described. We show the number of lost calls in a HLR failure. Both the procedures in IS-41 and GSM cannot identify the VLRs that need to be accessed by the HLR after a failure. An algorithm is proposed to identify the VLRs, which can be used to aggressively restore a HLR after its failure.
URI: http://dx.doi.org/10.1007/BF01200853
http://hdl.handle.net/11536/16992
ISSN: 1022-0038
DOI: 10.1007/BF01200853
期刊: WIRELESS NETWORKS
Volume: 1
Issue: 3
起始頁: 365
結束頁: 372
Appears in Collections:Articles