Enhanced Uplink Carrier Aggregation for LTE-Advanced Femtocells

Luis Guilherme Uzeda Garcia, Fernando Sanchez-Moya, Juan Villalba-Espinosa, Klaus Pedersen, Preben Mogensen

Research output: Contribution to journalConference article in JournalResearchpeer-review

2 Citations (Scopus)
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Abstract

In this paper we investigate uplink carrier aggregation in the context of dense residential deployments of LTE-Advanced Femtocells. Previous work in the literature based on macro-cells suggested considering UE power limitations to infer which UEs should be allowed to employ multiple component carriers. However, due to the very small radius of femtocells, UEs are not expected to become power-limited at all. We propose a decentralized scheme with limited signalling requirements that incorporates power control information, not only to guide the UE-specific carrier selection procedure, but also to capitalize on the inherent power spectral density and path loss differences in order to minimize inter-cell interference. We present a series of system level simulation results which provide strong evidence that our scheme delivers substantial gains in terms of coverage compared to existing solutions without sacrificing the SINR.
Original languageEnglish
JournalI E E E V T S Vehicular Technology Conference. Proceedings
Number of pages5
ISSN1550-2252
DOIs
Publication statusPublished - Sep 2011
EventVTC Fall 2011: VTC2011-Fall - San Francisco, United States
Duration: 5 Sep 20118 Sep 2011
Conference number: 74

Conference

ConferenceVTC Fall 2011
Number74
CountryUnited States
CitySan Francisco
Period05/09/201108/09/2011

Fingerprint

LTE-advanced
Femtocell
Uplink
Aggregation
Agglomeration
Path Loss
Power Spectral Density
Cell
Power spectral density
Selection Procedures
Power Control
Power control
Decentralized
Macros
Coverage
Interference
Radius
Minimise
Series
Requirements

Cite this

Garcia, Luis Guilherme Uzeda ; Sanchez-Moya, Fernando ; Villalba-Espinosa, Juan ; Pedersen, Klaus ; Mogensen, Preben. / Enhanced Uplink Carrier Aggregation for LTE-Advanced Femtocells. In: I E E E V T S Vehicular Technology Conference. Proceedings. 2011.
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title = "Enhanced Uplink Carrier Aggregation for LTE-Advanced Femtocells",
abstract = "In this paper we investigate uplink carrier aggregation in the context of dense residential deployments of LTE-Advanced Femtocells. Previous work in the literature based on macro-cells suggested considering UE power limitations to infer which UEs should be allowed to employ multiple component carriers. However, due to the very small radius of femtocells, UEs are not expected to become power-limited at all. We propose a decentralized scheme with limited signalling requirements that incorporates power control information, not only to guide the UE-specific carrier selection procedure, but also to capitalize on the inherent power spectral density and path loss differences in order to minimize inter-cell interference. We present a series of system level simulation results which provide strong evidence that our scheme delivers substantial gains in terms of coverage compared to existing solutions without sacrificing the SINR.",
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Enhanced Uplink Carrier Aggregation for LTE-Advanced Femtocells. / Garcia, Luis Guilherme Uzeda; Sanchez-Moya, Fernando; Villalba-Espinosa, Juan; Pedersen, Klaus; Mogensen, Preben.

In: I E E E V T S Vehicular Technology Conference. Proceedings, 09.2011.

Research output: Contribution to journalConference article in JournalResearchpeer-review

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AU - Garcia, Luis Guilherme Uzeda

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AU - Pedersen, Klaus

AU - Mogensen, Preben

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AB - In this paper we investigate uplink carrier aggregation in the context of dense residential deployments of LTE-Advanced Femtocells. Previous work in the literature based on macro-cells suggested considering UE power limitations to infer which UEs should be allowed to employ multiple component carriers. However, due to the very small radius of femtocells, UEs are not expected to become power-limited at all. We propose a decentralized scheme with limited signalling requirements that incorporates power control information, not only to guide the UE-specific carrier selection procedure, but also to capitalize on the inherent power spectral density and path loss differences in order to minimize inter-cell interference. We present a series of system level simulation results which provide strong evidence that our scheme delivers substantial gains in terms of coverage compared to existing solutions without sacrificing the SINR.

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