“Seized Traffic” in the context of mobile telecom networks refers to the volume of traffic that is successfully connected through the network’s voice channels. It’s measured in Erlangs, which is a unit of telecommunications traffic measurement named after the Danish mathematician and engineer A.K. Erlang.
Significance of Seized Traffic:
Seized Traffic is significant because it represents the actual usage of network resources. It helps in understanding the network’s capacity utilization and is crucial for:
• Network Planning: To determine the required capacity and to ensure quality of service (QoS).
• Performance Monitoring: To assess if the network is performing as expected and to identify any congestion or underutilization.
• Cost Management: To optimize the use of network resources and reduce costs by avoiding over-provisioning.
How Seized Traffic is Measured:
Seized Traffic is calculated based on the average number of concurrent calls (or sessions) and their duration. The formula for calculating traffic in Erlangs (A) is:
Erlangs(A) = {C * h}/{T}
Where:
• ( C ) is the average number of calls arrived during the time interval (T)
• ( h ) is the average call holding time
• ( T ) is the time interval (usually one hour)
For example, if a group of users made 30 calls in one hour, and each call had an average duration of 5 minutes, the traffic would be calculated as:
Erlangs(A) = {30 * 5}/{60}
Erlangs(A) = 2.5
This figure indicates that the network resources were used equivalent to 2.5 hours of continuous traffic in one hour, which is 2.5 Erlangs.
In summary, Seized Traffic measured in Erlangs is a key performance indicator (KPI) that helps telecom operators manage and optimize their networks efficiently. It’s a reflection of the network’s ability to handle voice traffic and is essential for maintaining a high level of service quality.