QoE – Quality of Experience
Where QoS is an indication of network performance, QoE is a measure of how network performance effects the end service and hence how the subscriber experiences that service. In some cases, a relatively significant QoS failure in the network may not have a perceivable effect on QoS. Conversely, in certain scenarios just a single dropped packet could detrimentally effect QoE eg dropping a packet carrying an i-frame as part of an IPTV service.
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