QCI表示QoS類別指示。這是一種特定標識，其定義了LTE數據包通信的質量
QCI類別范圍：1~9 （每個類別的定義如下表所示）
注意：
通過‘Activate default EPS bearer context request’消息來給每個UE分配特定QCI值並通知到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)
Maximum bit rate for uplink : 1 kbps
Maximum bit rate for downlink : 1 kbps
Guaranteed bit rate for uplink : 1 kbps
Guaranteed bit rate for downlink : 1 kbps