Open AccessDirectional‐DRX for 5G wireless communications
Author(s) -
Agiwal M.,
Maheshwari M.K.,
Saxe.,
Roy A.
Publication year - 2016
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2016.2850
Subject(s) - user equipment , computer science , wireless , power (physics) , extremely high frequency , node (physics) , markov process , beam (structure) , state (computer science) , electronic engineering , real time computing , telecommunications , engineering , base station , mathematics , physics , algorithm , statistics , civil engineering , structural engineering , quantum mechanics
Directional‐discontinuous reception (D‐DRX) is proposed for millimetre‐wave enabled fifth‐generation communications. In addition to conventional active, short‐sleep and long‐sleep states, the proposed mechanism considers a separate beam searching state, to address alignment of directional beams between user equipment (UE) and evolved node B after a sleep cycle. Semi‐Markov process is explored to capture various states of UE and probabilistically estimate its power saving and delay. A numerical analysis is conducted to validate the performance of D‐DRX proposal. About 10% improvement is achieved in power saving with a marginal decrease in delay compared with maximum possible beam search time.