Open AccessTraffic model of machine‐type communication for railway signal equipment based on MMPP
Author(s) -
Lin Junting,
Hu Xueyang,
Dang Jianwu,
Wu Zhongqing
Publication year - 2019
Publication title -
iet microwaves, antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.555
H-Index - 69
eISSN - 1751-8733
pISSN - 1751-8725
DOI - 10.1049/iet-map.2018.6004
Subject(s) - signal (programming language) , real time computing , process (computing) , user equipment , overhead (engineering) , computer science , markov chain , simulation , markov process , markov model , engineering , computer network , base station , statistics , mathematics , machine learning , programming language , operating system
Machine‐to‐machine communication can realise considerably better information cognition of fixed and mobile equipment during rail transit. To assess the network access performance of the machine‐type communication (MTC) of railway signal equipment for next‐generation intelligent transportation system, the forecasting model of the machine communication traffic of railway signal equipment was divided into station indoor model, station outdoor model, and section movement model on the basis of cell units, and the traffic quantity and signaling overhead of the three models were calculated respectively. Based on Poisson's distribution and the Markov update process, an improved Markov‐modulated Poisson Process (IMMPP) of the source traffic model was designed. Compared with the 3GPP traffic model, the IMMPP model maintains a good balance between the complexity and the relatively high accuracy of the signal equipment in the station outdoor and section scenarios. The simulation experiments showed that the IMMPP consumed 0.44 s more than 3GPP model 2 in the section scenario and 1.99 s in the station outdoor scenario, and the simulation equipment was in accordance with the actual railway signal equipment. The research result can provide a reference for the description of MTC traffic of other specialised equipment in the railway environment.