Title :
Technical challenges of railroad communications using long term evolution
Author :
Kim, Ronny Yongho ; Kwak, Jin Sam ; Hwang, Hyeon Chyeol
Author_Institution :
Korea Nat. Univ. of Transp., Uiwang, South Korea
Abstract :
As a next generation railroad communication technology, 3GPP has been considered to provide railroad communication using LTE, known as LTE-R, including railroad control, passenger services, wireless surveillance video, etc. International Union of Railways (UIC) has commenced to generate LTE-R requirements. There are some technical challenges for LTE to be used for today´s railroad communications because of the mobility of train up to 430km/h. Since railroad communication is related to public safety, very tight reliability requirement also needs to be met. In this paper, some technical considerations of LTE-R in terms of the possible frequency bands are provided. Upper limit of frequency band for high-speed train up to 500km/h is suggested by investigating the Doppler spread of wireless channel and physical channel structure of LTE.
Keywords :
3G mobile communication; Long Term Evolution; next generation networks; 3GPP; Doppler spread; LTE-R; Long Term Evolution; UIC; high-speed train; international union of railways; next generation railroad communication technology; passenger services; physical channel structure; public safety; railroad control; reliability requirement; wireless channel; wireless surveillance video; Channel estimation; Doppler effect; Downlink; Mobile communication; OFDM; Time frequency analysis; Wireless communication; LTE; LTE-R Frequency Band; Railroad Communications; Reference Signal;
Conference_Titel :
ICT Convergence (ICTC), 2012 International Conference on
Conference_Location :
Jeju Island
Print_ISBN :
978-1-4673-4829-4
Electronic_ISBN :
978-1-4673-4827-0
DOI :
10.1109/ICTC.2012.6387199
