WiMAX femtocells: a perspective on network architecture, capacity, and coverage

Yeh, Shu‐ping; Talwar, Shilpa; Lee, Seong-Choon; Kim, Heechang

doi:10.1109/mcom.2008.4644120

Cited by 204 publications

(110 citation statements)

References 2 publications

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“…The qualifier dense, in the context of this paper, means that the coverage areas of the SCs overlap with each other. That is, as opposed to sparse deployment where SCs are deployed far apart as to not interfere with each other [27]. The qualifier zone, in the context of this paper, means that the set of SCs in consideration is confined to a localized area that is small relative to the macrocell coverage area.…”

Section: A Related Workmentioning

confidence: 99%

Opportunistic distributed channel access for a dense wireless small‐cell zone

Goonewardena

Yadav

Ajib

et al. 2015

Wireless Communications

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Abstract-This paper considers uplink channel access in a zone of closed-access small-cells that is deployed in a macrocell service area. All small-cell user equipments (SUEs) have access to a common orthogonal set of channels, leading to intercell interference. In addition, each channel forms a separate collision domain in each cell, thus can be successfully used only by one SUE of that cell. This paper proposes two noncooperative Bayesian games, G1 and G2, that are played among the SUEs. G1 assumes the availability of channel state information (CSI) at the transmitters while G2 assumes the availability of only the distribution of the CSI. Each SUE can choose to transmit over one of the channels or not to transmit. The emphasis of the paper is on the set of symmetric threshold strategies where the Nash equilibrium is fully determined by a single parameter. The existence and uniqueness of pure Bayesian-Nash symmetric equilibrium (BNSE) of G1 in threshold strategies and mixed BNSE of G2 in uniformly distributed threshold strategies are proven. Numerical results corroborate the theoretical findings and benchmark against another decentralized scheme.

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Section: A Related Workmentioning

confidence: 99%

Opportunistic distributed channel access for a dense wireless small‐cell zone

Goonewardena

Yadav

Ajib

et al. 2015

Wireless Communications

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“…The consequent demand for higher capacity has led to smaller cells, called femtocells, that operate using the same OFDMA-based technology as the macro cells [2]. Femtocells offer improved coverage and a cheap and energy-efficient deployment option for indoor usage [3,4]. They provide numerous advantages to both customers and service providers.…”

Section: Introductionmentioning

confidence: 99%

A distributed resource management framework for interference mitigation in OFDMA femtocell networks

Yoon

Arslan

Sundaresan³

et al. 2012

Proceedings of the Thirteenth ACM International Symposium on Mobile Ad Hoc Networking and Computing

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Next generation wireless networks (i.e., WiMAX, LTE) provide higher bandwidth and spectrum efficiency leveraging smaller (femto) cells with orthogonal frequency division multiple access (OFDMA). The uncoordinated, dense deployments of femtocells however, pose several unique challenges relating to interference and resource management in these networks. Towards addressing these challenges, we propose RADION, a distributed resource management framework that effectively manages interference across femtocells. RA-DION's core building blocks enable femtocells to opportunistically find the available resources in a completely distributed and efficient manner. Further, RADION's modular nature paves the way for different resource management solutions to be incorporated in the framework. We implement RADION on a real WiMAX femtocell testbed deployed in a typical indoor setting. We extensively evaluate two solutions integrated with RADION, both via prototype implementation and simulations and quantify their performance in terms of quick and efficient self-organization.

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“…The coverage of radius for a femtocell is in tens of meters, and it is much smaller than that of the macrocells radius range about in hundreds of meters. Except the advantages mentioned before, the others are including prolong handset battery life and obtain a higher SINR (signal-to-interference-plus-noise ratio) [2]. However, the more are the desired signal components, the less the interference plus noise components are in a wireless system usually.…”

Section: Introductionmentioning

confidence: 99%

On Two-Tier Femtocell over Fading Environments

Chen¹,

Chuang²,

Chiu³

et al. 2011

ENG

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In this paper the system performance of an MC-CDMA (multi-carrier coded-division multiple-access) system operating over single-cell with two-tier femtocell environment is analyzed. Consider two-tier scenario is deployed with a macrocell site in which is being surrounded several femtocells, which are designed to serve a group of subscribers locate in a small coverage area such as small office, home office or a house. The coverage area is typically up to 100 meters in radius. Mostly, the femtocell is applied to serve indoor subscribers, thus, the Rayleigh fading is adopted to characterize the propagation channel. The technique of TH-MC-CDMA (time-hopped multi-carrier coded-division multiple-access) technique is supposed to transmit each symbol alternatively with fair time (slotting)/frequency (coding) for each user in the hotspots (the area around 0 th femtocell). The intensity of signals estimated at a mobile unit located in the second tie, i.e., the femtocell coverage area, is an important issue. The contribution of the paper is mainly to evaluate the system performance with both the BER (bit error rate) and OP (outage probability) according to the most important parameters, for example, the activating user number, the hopping number provided by TH-MC-CDMA system and the subcarrier number. Furthermore, the discussion of interference avoidance is also discussed with non-analytically.

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WiMAX femtocells: a perspective on network architecture, capacity, and coverage

Cited by 204 publications

References 2 publications

Opportunistic distributed channel access for a dense wireless small‐cell zone

Opportunistic distributed channel access for a dense wireless small‐cell zone

A distributed resource management framework for interference mitigation in OFDMA femtocell networks

On Two-Tier Femtocell over Fading Environments

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