Review Article
Wireless Communications in Smart Rail Transportation Systems
Table 1
Quality of service performances of GSM-R system for critical communications.
| GSM-R QoS parameter for ETCS | Requirement |
| Connection establishment | <8.5 s (95%) | ≤10 s (100%) |
| Transfer Delay (TD) | ≤0.5 s (99%) |
| Network Registration Delay (NRD) | ≤30 s (95%) | ≤35 s (99%) | ≤40 s (100%) |
| Connection Loss Rate (CLR) | <10−2/h |
| Transmission Interference (TI) | <10−2 |
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