On the feasibility of blind dynamic TDD in ultra-dense wireless networks
2015 (English)In: IEEE Vehicular Technology Conference, IEEE , 2015Conference paper (Refereed)
Abstract-Dynamic configuring of uplink and downlink switching point in time division duplex (TDD) systems is considered a promising solution to cope with the traffic variations caused by the burstiness of mobile broadband data. However, such dynamic TDD (D-TDD) requires fast inter-cell coordination which may be difficult to implement in ultra-densely deployed networks (UDNs). In order to explore the possibility of designing simplified UDN, we investigate the feasibility of uncoordinated and greedy TDD operation, namely blind D-TDD. It exploits the characteristics of UDN such as low average network utilization and similar transmit power for base stations (BS) and user equipment (UE). To reduce the impact of co- channel interference (CCI), the effect of beamsteering is also evaluated. Our results indicate that blind D-TDD outperforms traditional static TDD (S-TDD) when instantaneous traffic demands for uplink and downlink are highly asymmetric. Also, beamsteering exerts a significant influence on the feasibility of blind D-TDD.
Place, publisher, year, edition, pages
IEEE , 2015.
Blind, Dynamic TDD, Throughput, Ultra-dense network, Interference suppression, Mobile telecommunication systems, Cochannel interference (CCI), Dense network, Dense wireless networks, Inter-cell coordinations, Net work utilization, Switching points, Time-division duplex systems, Cochannel interference
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-175070DOI: 10.1109/VTCSpring.2015.7145967ISI: 000371404700381ScopusID: 2-s2.0-84940434725ISBN: 9781479980888OAI: oai:DiVA.org:kth-175070DiVA: diva2:881410
81st IEEE Vehicular Technology Conference, VTC Spring 2015, 11 May 2015 through 14 May 2015
QC 201512102015-12-102015-10-092016-04-11Bibliographically approved