Impact of Repetition and Retransmission on Delay and Energy Consumption in NB-IoT Random Access Channels

• Main Authors: Wei-Tai Chen, 陳暐太
• Other Authors: Ray-Guang Cheng
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/5u4ukk

碩士 === 國立臺灣科技大學 === 電子工程系 === 107 === The Narrowband internet of things (NB-IoT) is a technology to support wide area Internet of Things (IoT) applications and the standard is provided from 3rd generation partnership project (3GPP) standard start at Release 13. This paper continues the work of the paper " Optimization of NPRACH Resource Configuration in NB-IoT". Under the slotted Aloha system, in the "repetition mechanism" and "retransmission mechanism" to observe in a single user and multiple users with non-random backoff and random backoff effects on the delay and energy consumption under different Additive white Gaussian noise, and finally observe the repetition and retransmission in different combinations under different Rayleigh fading effects on the probability of success, and we use the simulation to verify the analytical formula.