Dynamic Reservation Scheme of Physical Cell Identity for 3GPP LTE Femtocell Systems

Lee, Poon Gup; Jeong, Jang Keun; Saxena, Navrati; Shin, Ji Tae

doi:10.3745/jips.2009.5.4.207

Cited by 25 publications

(9 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…UEs must read the system information to obtain the GID. This implies a long measurement gab (may reach 160 ms [16]) and consumes the battery power of UEs. Moreover, UEs cannot exchange data with the serving cell during measurement gabs without multiple receiver capabilities.…”

Section: Automatic Configuration Of Physical Cell Identitymentioning

confidence: 99%

Development of distributed and self-organized physical cell identity assignment schemes for LTE-advanced systems

Diab

Mitschele‐Thiel

2013

Proceedings of the 8th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

View full text Add to dashboard Cite

A major challenge pertinent to Long Term Evolution (LTE) systems is the development of self-organized PCI assignment solutions. This paper focuses on this challenge and proposes a new distributed and self-organized solution named Stable Graph Coloring (SGC) scheme. The proposal introduces a temporal PCIs sub-range for newly switched on eNBs, minimizes the impact of Neighbor Cell relations (NCRs) inaccuracy and re-uses PCIs as most as possible. It is evaluated compared to 3 known distributed approaches, namely the Graph Coloring (GC) approach, the LTE standard proposal and the Nokia-Siemens (NS) approach, by means of simulative studies. The studies investigate the impact of network size and the capabilities of stabilizing LTE systems. Our results show that the SGC scheme is slightly outperformed by the NS approach when considering the average number of PCIs conflicts. For the PCIs utilization ratio, the SGC approach is considerably better than the NS scheme. The most important result our proposal realizes is the capability to converge to a steady state while carefully utilizing the PCIs (less than 70% for high densities). Networks with such densities lose their stability when employing the LTE standard proposal and the NS approach.

show abstract

Section: Automatic Configuration Of Physical Cell Identitymentioning

confidence: 99%

Development of distributed and self-organized physical cell identity assignment schemes for LTE-advanced systems

Diab

Mitschele‐Thiel

2013

Proceedings of the 8th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

View full text Add to dashboard Cite

show abstract

“…A dynamic reservation scheme of PCIs in LTE femtocell systems is proposed in [8]. The PCI ranges for MBSs and FAPs are selected by MBSs according to the number of FAPs in the given macrocell area.…”

Section: Related Workmentioning

confidence: 99%

Cell Identifier Assignment in Two-Tier Femtocell Networks

Oppolzer

Bestak

2013

2013 IEEE 77th Vehicular Technology Conference (VTC Spring)

View full text Add to dashboard Cite

Small cells, mainly femtocells, are believed to be a way how to deal with mobile data traffic growth in the upcoming years. To enable easy and massive femtocell deployments, a distributed method of Physical Cell Identifier (PCI) assignment should be implemented in Femtocell Access Points among other self-organizing functionalities. In this paper, we propose such a distributed algorithm enabling correct PCI assignment in a collision-free manner and resolving all confusion events based on neighbouring cells' PCIs. The proposed algorithm is compared with the classical random algorithm by taking into account various femtocell densities, PCI ranges and sizes of neighbourhood area. Based on obtained results, the proposed algorithm leads to fewer confusion events and lower signalling network overhead even in dense femtocell environments such as office buildings or homes in city centres.

show abstract

“…However no information about number of conflicts, or stabilization time is given. In [3], P. Lee et al propose a manner to reserve a subset of PCIs for Femto, in a dynamic manner. The macrocells are responsible to determine the type of split used.…”

Section: Introductionmentioning

confidence: 99%

Performances evaluation of different algorithms for PCIs self configuration in LTE

Krichen

Barth

Marce³

2012

2012 18th IEEE International Conference on Networks (ICON)

View full text Add to dashboard Cite

Nowadays, network operators are basically facing two problems: the fast number of subscribers growth and the network congestion. To solve these problems, network operators increase the number of cells, make cells smaller and reserve a subpart of frequencies to Femto cells to offload data traffic. As a consequence, networks manual planning demands a lot of efforts and its cost increases. Self-configuring and self-optimizing mechanisms would be vital to operators to reduce manual planning. This article focuses on the application of these mechanisms in LTE and more specifically on the procedure of Automated configuration of Physical Cell Ids (PCIs). This procedure aims at avoiding conflicts in PCIs allocation. In this article, we first evaluate the performances of 3 relabeling algorithms applied on graphs representing real LTE Macro networks: Random Relabeling algorithm (RR), Smallest available Value algorithm (SV), Distance 3 neighbour label algorithm (D3). Then, we evaluate the performances of the best algorithm applied on graphs representing real LTE networks where Femto cells are connected to Macro cells. Here, we answer the following question: is the selected relabeling algorithm still efficient when we extend its application to Femto cells?

show abstract

Dynamic Reservation Scheme of Physical Cell Identity for 3GPP LTE Femtocell Systems

Cited by 25 publications

References 9 publications

Development of distributed and self-organized physical cell identity assignment schemes for LTE-advanced systems

Development of distributed and self-organized physical cell identity assignment schemes for LTE-advanced systems

Cell Identifier Assignment in Two-Tier Femtocell Networks

Performances evaluation of different algorithms for PCIs self configuration in LTE

Contact Info

Product

Resources

About