On Employing Hierarchical Structure in PCS Networks

Shin, In-Hye; Park, Gyung-Leen

doi:10.1007/3-540-44843-8_17

Cited by 3 publications

(3 citation statements)

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“…The conventional scheme, which doesn't employ any hierarchy, should update not only the VLR but also the HLR whenever an MS enters a new LA regardless of any SLA. The previous research [7] could not answer the questions like "What is the optimal number of levels in the hierarchy when designing cellular networks?". The next section proposes an analytic model to answer the questions.…”

Section: The Location Management Using the Hierarchical Structurementioning

confidence: 99%

“…Thus the total update rate of the VLR is obtained by Equation (2) which is derived from Equation (1) in [7], as shown in Figure 2-(a).…”

Section: The Proposed Analytical Modelmentioning

confidence: 99%

“…Since the HLR is connected to many VLRs, it has heavy signaling traffics [4][5][6]. The super location area (SLA) [7], a group of LAs, has been proposed for hierarchical networks to reduce the location update cost of the HLR. The paper develops an analytical model to obtain the optimal size of SLA which minimizes the total location update cost which includes both of the update rates of the HLR and VLR as well as the update delays for them.…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of the Optimal Hierarchy for Cellular Networks

Park

Shin

et al. 2007

Computational Science – ICCS 2007

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Abstract.Reducing the location update cost has been a critical research issue since the location update process requires heavy signaling traffics. One of the solutions is employing the hierarchical structure in cellular networks to reduce the location update cost. This paper is not only to measure the average location update cost in cellular networks using the hierarchical structure but also to determine the degree of the hierarchy which minimizes the location update cost. The paper proposes an advanced analytical model to obtain the optimal hierarchy in cellular networks, considering the update rates of the two registers, HLR and VLR, as well as the update delays for them. Also, the paper provides the threshold values as a guideline for the network administrator to design the optimal hierarchical structure in cellular networks.

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Section: The Location Management Using the Hierarchical Structurementioning

confidence: 99%

“…Thus the total update rate of the VLR is obtained by Equation (2) which is derived from Equation (1) in [7], as shown in Figure 2-(a).…”

Section: The Proposed Analytical Modelmentioning

confidence: 99%