Open AccessTowards minimum code dissemination delay through UAV joint vehicles for smart city
Author(s) -
Zhao Yongjian,
Wang Tian,
Zhang Shaobo,
Wang Ye
Publication year - 2020
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2019.1205
Subject(s) - dissemination , code (set theory) , computer science , interim , unreachable code , redundant code , computer network , real time computing , key (lock) , telecommunications , computer security , code generation , geography , set (abstract data type) , programming language , archaeology
In this study, an update code using vehicles joint unmanned aerial vehicle (UC‐VU) scheme is proposed to disseminate code for smart sensing devices (SSDs) in the smart city. The innovations of the UC‐VU scheme are as follows. (i) The unmanned aerial vehicle (UAV) is adopted to disseminate code at the beginning of code dissemination for the SSDs which are difficult to get code through mobile vehicles. Thus, the average delay required for SSDs to get code can be reduced. (ii) k Smart storage devices are selected as interim code stations and the strategy of selecting interim code stations’ location and number for code dissemination is proposed to disseminate code efficiently. This makes mobile vehicles can get code from k + 1 code station for code dissemination which changed the situation where code dissemination is slow due to only one code station disseminates code. (iii) This study also gives the optimisation strategy of the UAV flight trajectory to optimise the flight distance. The key performance indicators such as code dissemination rate compared to previous strategies increases 34.6%, the average dissemination time, the time that all SSDs get the code and the UAV flight trajectory's path decrease by 26.27, 25.30, and 71.67%, respectively.