On the relay-fallback tradeoff in millimeter wave wireless system
2016 (English)In: Proceedings - IEEE INFOCOM, 2016, 622-627 p.Conference paper (Refereed)
Millimeter wave (mmWave) communications systems are promising candidate to support extremely high data rate services in future wireless networks. MmWave communications exhibit high penetration loss (blockage) and require directional transmissions to compensate for severe channel attenuations and for high noise powers. When blockage occurs, there are at least two simple prominent options: 1) switching to the conventional microwave frequencies (fallback option) and 2) using an alternative non-blocked path (relay option). However, currently it is not clear under which conditions and network parameters one option is better than the other. To investigate the performance of the two options, this paper proposes a novel blockage model that allows deriving maximum achievable throughput and delay performance of both options. A simple criterion to decide which option should be taken under which network condition is provided. By a comprehensive performance analysis, it is shown that the right option depends on the payload size, beam training overhead, and blockage probability. For a network with light traffic and low probability of blockage in the direct link, the fallback option is throughput- and delay-optimal. For a network with heavy traffic demands and semistatic topology (low beam-training overhead), the relay option is preferable.
Place, publisher, year, edition, pages
2016. 622-627 p.
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-194865DOI: 10.1109/INFCOMW.2016.7562151ScopusID: 2-s2.0-84988878694ISBN: 9781467399555OAI: oai:DiVA.org:kth-194865DiVA: diva2:1054903
35th IEEE Conference on Computer Communications Workshops, INFOCOM WKSHPS 2016, 10 April 2016 through 14 April 2016
QC 201612092016-12-092016-11-012016-12-09Bibliographically approved