Cost Analysis of a Hybrid-Movement-Based and Time-Based Location Update Scheme in Cellular Networks


A movement-based location update (MBLU) scheme is effective and has low operation complexity. On the opposite hand, cellular networks use periodic LUs that are intrinsically time-based mostly LUs (TBLUs) to detect the presence of a user equipment (UE) to avoid wasting network resources to deliver incoming calls to an abnormally detached UE. When implemented during a cellular network, the MBLU theme should incorporate TBLUs to detect the UE presence. Therefore, a hybrid-movement-based and time-primarily based LU (HMTBLU) scheme arises naturally. Beneath the HMTBLU scheme, an LU happens either when the movement threshold for MBLUs is reached or when the time threshold for TBLUs is reached. During this paper, we tend to develop an embedded Markov chain approach to calculate the signaling cost of the HMTBLU theme. We have a tendency to derive analytical formulas for the signaling value and formulas helpful for coming up with an optimal paging scheme. The accuracy of these formulas is validated through simulation. Based mostly on these formulas, we tend to conduct a numerical study to research the influence of various parameters on the signaling cost. The derived formulas can guide the implementation of the HMTBLU theme in cellular networks, including Long-Term Evolution (LTE). Moreover, the developed mathematical approach will be applied to studying alternative LU schemes like the LU theme utilized in LTE.

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