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Efficient Contention Resolution in Highly Dense LTE Networks for Machine Type Communications
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).ORCID iD: 0000-0002-5009-723X
2015 (English)Conference paper (Refereed)Text
Abstract [en]

In this paper, we propose a solution to efficiently handle the initial access contention for highly dense LTE networks, which still represents a challenge in terms of the high number of devices associated to Machine Type Communications. The analysis is based on the fact that, as the radius of a LTE cell is larger, the number of available preambles generated from a single root sequence is reduced. The current access mechanism, based on frame-slotted ALOHA, does not operate efficiently under these conditions, negatively affecting the access delay and collision probability. We show how the access procedure can be improved by implementing tree-splitting algorithms in order to cope with high number of simultaneous arrivals in large cells, above 5 km in radius. The implementation achieves as much as 85% reduction on the access delay and 54% reduction on energy consumption for cells with radius larger than 39 km.

Place, publisher, year, edition, pages
IEEE , 2015. 1-7 p.
Keyword [en]
Long Term Evolution;queueing theory;trees (mathematics);LTE cell;access delay reduction;distributed queuing;efficient contention resolution;energy consumption reduction;highly dense LTE networks;machine type communications;tree-splitting algorithms;Delays;Electronic mail;Energy consumption;Performance evaluation;Proposals;Synchronization;Uplink
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-185441DOI: 10.1109/GLOCOM.2015.7417669ISBN: 978-1-4799-5952-5OAI: oai:DiVA.org:kth-185441DiVA: diva2:920650
Conference
2015 IEEE Global Communications Conference (GLOBECOM)
Funder
Wireless@kth
Note

QC 20160425

Available from: 2016-04-18 Created: 2016-04-18 Last updated: 2016-04-25Bibliographically approved

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Laya, Andres
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Electrical Engineering, Electronic Engineering, Information Engineering

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ReferencesLink to record
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