Efficient Contention Resolution in Highly Dense LTE Networks for Machine Type Communications
2015 (English)Conference paper (Refereed)Text
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.
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
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-185441DOI: 10.1109/GLOCOM.2015.7417669ISBN: 978-1-4799-5952-5OAI: oai:DiVA.org:kth-185441DiVA: diva2:920650
2015 IEEE Global Communications Conference (GLOBECOM)
QC 201604252016-04-182016-04-182016-04-25Bibliographically approved