Mobility management with the central-based location area policy

Liou, Ren-Huang; Lin, Yi‐Bing

doi:10.1016/j.comnet.2012.11.003

Cited by 15 publications

(29 citation statements)

References 11 publications

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“…Since the paging procedure is not defined by the standard, the 3GPP scheme proposed uses a sequential scheme that first pages the last registered cell, then the last registered TA and finally the whole TAL. This simple scheme reduces the signaling associated to paging, as it is shown in [10].…”

Section: A 3gpp-based Schemementioning

confidence: 91%

X2-Interface-basedlocation management for Small Cell networks

Pacheco-Paramo

Akyildiz

Casares‐Giner

2013

2013 IEEE Global Communications Conference (GLOBECOM)

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Small Cells (SCs) have emerged as one of the main solutions to the exponential growth of data in mobile networks. Still, some key challenges lack an adequate solution for SCs to reach its full potential. Among these challenges, location management is responsible for keeping track of users' location, necessary for sending and receiving calls. This essential function is performed through two operations: Location Updates (LUs) and paging. The standard solution for location management provided by 3GPP defines LU and paging with Tracking Area List (TAL) granularity. However, these procedures are no longer appropriate in SCs for two reasons: first, smaller coverage areas increase mobility among cells; second, backhaul capacity limitations set tighter restrictions on the signaling load. In this paper, two schemes for location update and paging are proposed, namely, X2-Interface-based scheme with SC updates and X2-Interface-based scheme with Tracking Area (TA) updates. These schemes reduce paging through the use of a local anchor to keep track of users' location inside the TAL. Furthermore, the processing cost is reduced by allowing connectivity among SCs through the X2 interface. The numerical results show that the proposed solutions reduce the total cost associated with location update and paging in relation to the 3GPP-based scheme with TAL granularity.

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Section: A 3gpp-based Schemementioning

confidence: 91%

X2-Interface-basedlocation management for Small Cell networks

Pacheco-Paramo

Akyildiz

Casares‐Giner

2013

2013 IEEE Global Communications Conference (GLOBECOM)

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“…To date, despite substantial existing research [6]- [18] on the optimization of the LA size, how to set the LA center has not been investigated. In this paper, we differentiate the LA center from the initial position of the MT, and investigate how to optimize the LA center O in addition to optimizing the LA size R. B.…”

Section: Amentioning

confidence: 98%

“…The distance-based scheme has attracted a great deal of attention [6]- [18] after that. Importantly, the location management scheme in 4G Long-Term Evolution (LTE) [19] [20] shares many essential characteristics with the distance-based scheme, as explained in the Appendix.…”

Section: Amentioning

confidence: 99%

Distance-Based Location Management Utilizing Initial Position for Mobile Communication Networks

Zhao

Liew

Zhang

et al. 2016

IEEE Trans. on Mobile Comput.

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This paper aims at improving the distance-based location management scheme for mobile communication networks. In location management, a mobile terminal (MT) is tracked based on its location-update area (LA). The improvement is brought about by joint optimization of LA center and LA size. For LA center optimization (LCO), we determine the optimal center position of the LA given the initial position of the MT upon each location update. The investigation of optimal LA center has eluded research to date. Based on the popular continuous-time random walk (CTRW) mobility model, we propose an analytical framework that uses a diffusion equation to determine the optimal LA center that minimizes the total cost of location management, consisting of the location update cost and terminal paging cost. This framework allows us to easily model the nonMarkovian movement of the MT and evaluate the impact of various measurable physical parameters (such as length of road section, angle between road sections, road section crossing time) and LA center. In particular, we show that proper LA center can significantly reduce the total cost. For example, for the circular LA and low Poisson call-arrival rate, optimizing the LA center alone has the potential of reducing the cost by up to 37%. Joint optimization of the LA center and terminal paging scheme can reduce the cost even further. Simulations results match the theoretical analysis to a gap within 3%, indicating that our theoretical model is very accurate.

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“…There are two types of 2-D scenarios for the mobility management of wireless communication networks [20][21][22][23][24][25][26][27][28]: mesh cell structure and hexagonal cell structure. In the mesh cell structure, each cell is a square of identical size with four neighbors, where the MS can move from one cell to any cell of its four neighbors with specific probabilities.…”

Section: Analytical Modelingmentioning

confidence: 99%