System level evaluation of interference in vehicular mobile broadband networks

DE Halls; AR Nix; MA Beach

doi:10.1109/VETECS.2011.5956681

System level evaluation of interference in vehicular mobile broadband networks

DE Halls, AR Nix, MA Beach

Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)

2 Citations (Scopus)

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Abstract

This paper presents results from a novel OFDMA multi-cell mobile broadband system-level simulator. The tool is used to statistically characterize uplink and downlink inter-cell interference. Fully loaded interference studies cannot be performed on real-world networks until they have been fully deployed. As such, interference analysis and management must be accurately performed pre- deployment using detailed network simulators. This paper discusses our simulator architecture and the steps necessary to reduce computational complexity inherent in such simulations. The paper then demonstrates the impact of inter-cell interference in OFDMA networks. The results demonstrate that it is the frame-to-frame fluctuations in interference, and not the received signal level, that dominate inaccuracy in the Channel Quality Index (CQI). CQI errors lead to the wrong MCS mode being chosen by the AMC algorithm and this leads to throughput reduction. Results show that this problem is exacerbated by high vehicular speeds and the absence of interference randomization. Compared to ideal MCS selection, throughput reductions of up to 45% are reported.

Translated title of the contribution	System level evaluation of interference in vehicular mobile broadband networks
Original language	English
Title of host publication	IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Pages	1 - 5
Number of pages	5
ISBN (Print)	9781424483327
DOIs	https://doi.org/10.1109/VETECS.2011.5956681
Publication status	Published - May 2011
Event	73rd Vehicular Technology Conference 2011 (VTC 2011-Spring) - Budapest, Hungary Duration: 1 May 2011 → …

Publication series

Name
ISSN (Print)	15502252

Conference

Conference	73rd Vehicular Technology Conference 2011 (VTC 2011-Spring)
Country/Territory	Hungary
City	Budapest
Period	1/05/11 → …

Bibliographical note

Rose publication type: Conference contribution

Additional information: With accompanying conference presentation

Sponsorship: David Halls would like to that the UK EPSRC and Motorola for their kind financial assistance.

Terms of use: Copyright © 2011 IEEE. Reprinted with permission, from - DE Halls, AR Nix, MA Beach; paper 'System level evaluation of interference in vehicular mobile broadband networks '; VTC Spring 2011; May 2011.

This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected].

By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

Keywords

mobile broadband
interference characterization
cellular
WiMAX
system level evaluation

Access to Document

10.1109/VETECS.2011.5956681

Conference paperAccepted author manuscript, 207 KB
Accompanying conference presentationAccepted author manuscript, 1 MB

http://hdl.handle.net/1983/1769

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Cite this

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title = "System level evaluation of interference in vehicular mobile broadband networks",

abstract = "This paper presents results from a novel OFDMA multi-cell mobile broadband system-level simulator. The tool is used to statistically characterize uplink and downlink inter-cell interference. Fully loaded interference studies cannot be performed on real-world networks until they have been fully deployed. As such, interference analysis and management must be accurately performed pre- deployment using detailed network simulators. This paper discusses our simulator architecture and the steps necessary to reduce computational complexity inherent in such simulations. The paper then demonstrates the impact of inter-cell interference in OFDMA networks. The results demonstrate that it is the frame-to-frame fluctuations in interference, and not the received signal level, that dominate inaccuracy in the Channel Quality Index (CQI). CQI errors lead to the wrong MCS mode being chosen by the AMC algorithm and this leads to throughput reduction. Results show that this problem is exacerbated by high vehicular speeds and the absence of interference randomization. Compared to ideal MCS selection, throughput reductions of up to 45% are reported.",

keywords = "mobile broadband, interference characterization, cellular, WiMAX, system level evaluation",

author = "DE Halls and AR Nix and MA Beach",

note = "Rose publication type: Conference contribution Additional information: With accompanying conference presentation Sponsorship: David Halls would like to that the UK EPSRC and Motorola for their kind financial assistance. Terms of use: Copyright {\textcopyright} 2011 IEEE. Reprinted with permission, from - DE Halls, AR Nix, MA Beach; paper 'System level evaluation of interference in vehicular mobile broadband networks '; VTC Spring 2011; May 2011. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it. ; 73rd Vehicular Technology Conference 2011 (VTC 2011-Spring) ; Conference date: 01-05-2011",

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language = "English",

isbn = "9781424483327",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

pages = "1 -- 5",

booktitle = "IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011",

address = "United States",

}

Halls, DE, Nix, AR & Beach, MA 2011, System level evaluation of interference in vehicular mobile broadband networks. in IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011. Institute of Electrical and Electronics Engineers (IEEE), pp. 1 - 5, 73rd Vehicular Technology Conference 2011 (VTC 2011-Spring), Budapest, Hungary, 1/05/11. https://doi.org/10.1109/VETECS.2011.5956681

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AU - Halls, DE

AU - Nix, AR

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N1 - Rose publication type: Conference contribution Additional information: With accompanying conference presentation Sponsorship: David Halls would like to that the UK EPSRC and Motorola for their kind financial assistance. Terms of use: Copyright © 2011 IEEE. Reprinted with permission, from - DE Halls, AR Nix, MA Beach; paper 'System level evaluation of interference in vehicular mobile broadband networks '; VTC Spring 2011; May 2011. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to [email protected]. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.

PY - 2011/5

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N2 - This paper presents results from a novel OFDMA multi-cell mobile broadband system-level simulator. The tool is used to statistically characterize uplink and downlink inter-cell interference. Fully loaded interference studies cannot be performed on real-world networks until they have been fully deployed. As such, interference analysis and management must be accurately performed pre- deployment using detailed network simulators. This paper discusses our simulator architecture and the steps necessary to reduce computational complexity inherent in such simulations. The paper then demonstrates the impact of inter-cell interference in OFDMA networks. The results demonstrate that it is the frame-to-frame fluctuations in interference, and not the received signal level, that dominate inaccuracy in the Channel Quality Index (CQI). CQI errors lead to the wrong MCS mode being chosen by the AMC algorithm and this leads to throughput reduction. Results show that this problem is exacerbated by high vehicular speeds and the absence of interference randomization. Compared to ideal MCS selection, throughput reductions of up to 45% are reported.

AB - This paper presents results from a novel OFDMA multi-cell mobile broadband system-level simulator. The tool is used to statistically characterize uplink and downlink inter-cell interference. Fully loaded interference studies cannot be performed on real-world networks until they have been fully deployed. As such, interference analysis and management must be accurately performed pre- deployment using detailed network simulators. This paper discusses our simulator architecture and the steps necessary to reduce computational complexity inherent in such simulations. The paper then demonstrates the impact of inter-cell interference in OFDMA networks. The results demonstrate that it is the frame-to-frame fluctuations in interference, and not the received signal level, that dominate inaccuracy in the Channel Quality Index (CQI). CQI errors lead to the wrong MCS mode being chosen by the AMC algorithm and this leads to throughput reduction. Results show that this problem is exacerbated by high vehicular speeds and the absence of interference randomization. Compared to ideal MCS selection, throughput reductions of up to 45% are reported.

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BT - IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011

PB - Institute of Electrical and Electronics Engineers (IEEE)

T2 - 73rd Vehicular Technology Conference 2011 (VTC 2011-Spring)

Y2 - 1 May 2011

ER -

System level evaluation of interference in vehicular mobile broadband networks

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