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What is QCI mapping in LTE? Please explain in detail?

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What is QCI mapping in LTE? Please explain in detail?
posted Dec 20, 2014 by Gnanendra Reddy

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1 Answer

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QCI stands for QoS Class Identifier. This is a special identifier defining the quality of packet communication provided by LTE. LTE has defined 1 to 9 QCI (Qos Class Identifier) values. Each one has its associated packet delay and packet loss. Following is the mapping -

QCI Mapping

answer Dec 20, 2014 by Salil Agrawal
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LTE provides different QoS for a given application by putting it into the different bearer. each bearer has its own QCI (QoS Class Identifier) which introduce a particular service for a particular application. Now the question is why QCI got introduced in LTE i.e. what was the problem with earlier approach.

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I have a question concerning QoS management in LTE: there are two parameters for an EPC bearer: QCI (QoS class identifier that resumes a set of parameters(priority, packet delay, packet error rate…) and ARP (Allocation and retention priority) that defines the priority of a bearer. My question is : what is the difference between the QCI priority and the ARP priority ?