Location management employing two-level forwarding pointers in PCS networks

Absrmel-Io thk paper, we pment a new location tracking scheme which intends to mnigntc the rlpdlng mmc for loution management In the PCS systems. For a PCS network Io effraively deliver srrvlces to itl mohlk users, it most have an rmrirnt way to locate the mobile usen. The location management fnlfillr this task thmsgh lorstion registratIan and paging. To reduce the slgndlng traffic, many schemes Such w Local Anchor (LA) scheme, per-uaer caching scheme m d pointer forwarding scheme h m beem pmposed. In our hwc-levol forwarding strategy, we chwse a ret el VLRs traversed by usen w the Mobility Agents (MA), whlcb form another lwel of loution management to make many rrpisnatiom localized. Pointers UII them be setop between VLRs as the mdltlonrl pointer lolmrdiag rhrme as well 8s behvDea MAs. The numcrlcsl results show that thk imtegy CUI rigdfi-tly reduce the network aignding tmffie for usen with low CMR without increasing morh ofthe cdl sctop delay.