A. PCRF向PGW发起“IP-CANSession Modification”请求 B. MME下发eNB“ERAB MODIFY REQUEST”,该条信令中包括QCI,MBR&GBR,ARP C. eNB向UE下发RRC CONNECTION RECONFIGURATION会把上述参数带下去 D. UE返回"Bearer Modify Response"
A. 钙 B. 钙钠 C. 锂 D. 钠