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Analytical modeling of DRX with flexible TTI for 5G communications
Author(s) -
Maheshwari Mukesh Kumar,
Roy Abhishek,
Saxevrati
Publication year - 2018
Publication title -
transactions on emerging telecommunications technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.366
H-Index - 47
ISSN - 2161-3915
DOI - 10.1002/ett.3275
Subject(s) - computer science , latency (audio) , computer network , wireless , real time computing , telecommunications
Ever‐increasing growth in various types of devices with different requirements requires next‐generation wireless networks to deal with diverse type of traffic. The use of fixed transmission time interval (TTI) for transmission may not perform efficiently with various types of traffic. These requirements are attainable with a fifth‐generation flexible frame structure, which consists of flexible TTI for transmission. Short TTI could be used for ultrareliable low‐latency communication to meet the latency requirements, whereas long TTI is suitable for mobile broadband services. Long‐Term Evolution/Long‐Term Evolution Advanced uses discontinuous reception (DRX) for power saving. DRX saves the battery power of a device at the cost of an increase in latency. In this article, we explore DRX with flexible TTI for fifth‐generation communications. We model DRX with a semi‐Markov model to analyze the power‐saving factor and delay. Moreover, we proposed an algorithm for the TTI selection for various service requirements. Our numerical analysis results show that the delay attained by 0.2‐ms TTI is 76% less than that attained by 1‐ms TTI.