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dc.contributor.authorLin, YBen_US
dc.contributor.authorYang, SRen_US
dc.date.accessioned2014-12-08T15:40:09Z-
dc.date.available2014-12-08T15:40:09Z-
dc.date.issued2003-11-01en_US
dc.identifier.issn1536-1276en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TWC.2003.819034en_US
dc.identifier.urihttp://hdl.handle.net/11536/27418-
dc.description.abstractIn general packet radio service (GPRS), a mobile station (MS) is tracked at the cell level during packet transmission, and is tracked at the routing-area (RA) level when no packet is delivered. A READY timer (RT) mechanism was proposed in 3GPP 23.060 to determine when to switch from cell tracking to RA tracking. In this mechanism, a threshold interval T is defined. If no packet is delivered within T, the MS is tracked at the RA level. When a packet arrives, the MS is tracked at the cell level again. However, the RT mechanism has a major fallacy in that the RTs in both the MS and the serving GPRS support node may lose synchronization. This paper considers another mechanism called READY counter (RC) to resolve this problem. In this approach, a threshold K is used. Like the RT approach, the MS is tracked at the cell level during packet transmission. If no packets are delivered after the MS has made K cell crossings, the MS is tracked at the RA level. We also devise an adaptive algorithm called dynamic RC (DRC). This algorithm dynamically adjusts the K value to reduce the location update and paging costs. We propose analytic and simulation models to investigate RC, RT, and DRC. Our study indicates that RC may outperform RT. We also show that DRC nicely captures the traffic-mobility patterns and always adjusts the K threshold close to the optimal values.en_US
dc.language.isoen_USen_US
dc.subjectgeneral packet radio service (GPRS)en_US
dc.subjectmobile networken_US
dc.subjectmobility management (XIM)en_US
dc.subjectwireless dataen_US
dc.titleA mobility management strategy for GPRSen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TWC.2003.819034en_US
dc.identifier.journalIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONSen_US
dc.citation.volume2en_US
dc.citation.issue6en_US
dc.citation.spage1178en_US
dc.citation.epage1188en_US
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000186537500010-
dc.citation.woscount23-
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