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Table 2 Service class requirements for T2W services

From: A novel network architecture for train-to-wayside communication with quality of service over heterogeneous wireless networks

Class

Delay

Jitter

Loss

Services

A

< 1s

-

-

Passenger internet; crew intranet; diagnostics; application update; content update

B

< 0.5 s

-

-

TCMS event

C

< 1s

-

< 110−3

CCTV security

D

< 0.07 s

< 0.016 s

< 1.10−2

Intercom (VoIP)

E

< 0.2 s

-

< 110−2

CCTV safety

F

< 1s

-

< 110−6

TCMS cyclic

G

< 1s

< 0.1 s

< 110−2

Public address; PIS data; configuration traffic

  1. (a dash (-) means that this metric is no hard requirement for a given service)