Change search
ReferencesLink to record
Permanent link

Direct link
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
URN: urn:nbn:se:kth:diva-185441DOI: 10.1109/GLOCOM.2015.7417669ISBN: 978-1-4799-5952-5OAI: diva2:920650
2015 IEEE Global Communications Conference (GLOBECOM)

QC 20160425

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

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Laya, Andres
By organisation
Radio Systems Laboratory (RS Lab)
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 3 hits
ReferencesLink to record
Permanent link

Direct link