Quality of service (QoS)
The system concept of TRainCom® MT supports simultaneous transmission of multiple data services in a single radio link – called “integrated radio system concept”, without any interference between those data services.
However, there are different types of data services – some data (such as for CBTC) are absolutely essential or vital for metro operation, whereas others have a rather more limited relevance for the pure metro operation (non-vital character).
With respect to operational safety aspects and according to customer requirements TRainCom® features built-in quality of service (QoS) procedures with traffic-shaping mechanisms that can handle different data services (applications) at several individual priority levels.
This prioritization process along with predefined bandwidth allocation and reservation guarantees hassle-free system operation of mission-critical applications such as for CBTC purposes, but also improves overall system stability as well by avoiding data overflows.
The implemented Quality of Service (QoS) procedures can provide a certain level of performance where service guarantees are important and network capacity is limited. Especially real-time applications, which require a fixed bit rate and/or are sensitive to delays, benefit from such TRainCom features (Result: low delays/latency, low jitter and no packet loss).
Operator advantages:
However, there are different types of data services – some data (such as for CBTC) are absolutely essential or vital for metro operation, whereas others have a rather more limited relevance for the pure metro operation (non-vital character).
With respect to operational safety aspects and according to customer requirements TRainCom® features built-in quality of service (QoS) procedures with traffic-shaping mechanisms that can handle different data services (applications) at several individual priority levels.
This prioritization process along with predefined bandwidth allocation and reservation guarantees hassle-free system operation of mission-critical applications such as for CBTC purposes, but also improves overall system stability as well by avoiding data overflows.
The implemented Quality of Service (QoS) procedures can provide a certain level of performance where service guarantees are important and network capacity is limited. Especially real-time applications, which require a fixed bit rate and/or are sensitive to delays, benefit from such TRainCom features (Result: low delays/latency, low jitter and no packet loss).
Operator advantages:
- True quality of service mechanisms
- Definition of different data service priority levels
- Safety-critical and sensitive data are handled at highest priority levels
- Traffic-shaping features enable guaranteed bandwidth availability
- Predefined bandwidth allocation for specific data services
- Improved system stability by prioritization and bandwidth reservation
- Centralized QoS policy generation
The picture above shows the QoS MMI and illustrates the QoS configuration within TRainCom®: