QCI表示QoS类别指示。这是一种特定标识，其定义了LTE数据包通信的质量
QCI类别范围：1~9 （每个类别的定义如下表所示）
注意：
通过‘Activate default EPS bearer context request’消息来给每个UE分配特定QCI值并通知到UE。
如：
Activate default EPS bearer context request ::= DIVISION
. ...
EPS quality of service
Length: 1
Quality of Service Class Identifier (QCI): QCI 9 (9)
Activate dedicated EPS bearer context request ::= DIVISION
. ...
EPS quality of service
Length: 5
Quality of Service Class Identifier (QCI): QCI 1 (1)
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Maximum bit rate for downlink : 1 kbps
Guaranteed bit rate for uplink : 1 kbps
Guaranteed bit rate for downlink : 1 kbps