A self-organized Tracking Area List mechanism for large-scale networks of femtocells

Ferragut, Jaime; Mangues‐Bafalluy, Josep

doi:10.1109/icc.2012.6363731

Cited by 21 publications

(13 citation statements)

References 11 publications

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“…First, reduced coverage areas increase mobility among SCs and therefore increase LUs. This has been approached by dynamically changing the TAL size according to the users' speed [3]. However, this solution has a high cost since it requires the introduction of specific timers for each user in the MME.…”

Section: Introductionmentioning

confidence: 98%

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: Introductionmentioning

confidence: 98%

X2-Interface-basedlocation management for Small Cell networks

Pacheco-Paramo

Akyildiz

Casares‐Giner

2013

2013 IEEE Global Communications Conference (GLOBECOM)

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“…Hence, in order to successfully adapt to traffic conditions, most of the existing work focus on TAL configuration. In [9], while TA size remains fixed, TAL size is dynamically changed according to the user's speed. This allows for high speed users to reduce their TAUs by using bigger TALs.…”

Section: Introductionmentioning

confidence: 99%

Local Anchor Based Location Management Schemes for Small Cells in HetNets

Pacheco-Paramo

Akyildiz

Casares‐Giner

2016

IEEE Trans. on Mobile Comput.

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“…The authors in [15] present a self-organized TAL mechanism to reduce the signaling overhead of a network of femtocells. The mechanism adapts the size of UE-specific TALs to the mobility speed and the paging arrival rate of each UE.…”

Section: Related Workmentioning

confidence: 99%

On dynamic signaling congestion mitigation by overlapping tracking area lists

Razavi

Yuan

Gunnarsson

et al. 2015

Journal of Network and Computer Applications

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Mitigating signaling congestion of tracing user equipments (UEs), adaptively to the changes in UE location and mobility patterns is a challenging issue in mobility management of Long Term Evolution (LTE) networks. Signaling congestion usually occurs due to many UEs behaving in a similar manner, e.g., massive and simultaneous UE mobility in a train movement scenario. LTE networks allow the use of tracking area lists (TALs), each being a list containing multiple tracking areas (TAs). The overlapping TAL scheme has been previously used for signaling congestion mitigation for snapshot scenarios. For maintaining the improved performance over non-list-oriented TA configuration over time, an automatic dynamic configuration framework, which is a key aspect in Self Organizing Network (SON), has been applied in this paper. We develop a linear programming model for optimal TAL configuration. Repetitively solving the model for different time intervals gives an evaluation framework on the performance of SON location management. Comprehensive numerical results are presented in this study, using a large-scale realistic network scenario. The experiments demonstrate the effectiveness of the SON dynamic framework in reducing the total signaling overhead of the network compared to the static TA. Moreover, the overlapping TAL scheme significantly improves the performance of the network in the tracking area update congested scenarios over the conventional TA

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A self-organized Tracking Area List mechanism for large-scale networks of femtocells

Cited by 21 publications

References 11 publications

X2-Interface-basedlocation management for Small Cell networks

X2-Interface-basedlocation management for Small Cell networks

Local Anchor Based Location Management Schemes for Small Cells in HetNets

On dynamic signaling congestion mitigation by overlapping tracking area lists

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