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EPC EUTRAN LTE Mobile Networks RF

QoS in LTE (4G) – QCI

The QCI (Quality Class Indicator) is a value of 0-9 to denote the service type and the maximum delays, packet loss and throughput the service requires. Different data flows have different service requirements, let’s look at some examples: A VoLTE call requires low latency and low packet loss, without low latency it’ll be impossible to […]

Categories
EPC EUTRAN LTE Mobile Networks RF

QoS in LTE (4G) – GBR & Non-GBR Bearers

GBR is a confusing concept at the start when looking at LTE but it’s actually kind of simple when we break it down. GBR stands for Guaranteed Bit Rate, meaning the UE is guaranteed a set bit rate for the bearer. The default bearer is always a non-GBR bearer, with best effort data rates. Let’s […]