TS23401里有这样一段话:
The old MME responds withone Context Response (IMSI, ME Identity (if available), KSI, CK, IK, unusedAuthentication Quintets, EPS Bearer Contexts, Serving GW signalling Address andTEID(s), ISR Supported, MS Info Change Reporting Action (if available), CSGInformation Reporting Action (if available), UE Time Zone, UE Core NetworkCapability, UE Specific DRX Parameters, Change to Report (if present)) message.The PDN GW Address and TEID(s) (for GTP-based S5/S8) or GRE Keys (PMIP-basedS5/S8) for uplink traffic and control plane, and the TI(s) is part of the EPSBearer context(s).
另外在 TS29274 GTP-V2里:
在描述old MME发给 new MME的 MM Context里,是这样写的:
As depicted in Figure 8.38-5, the current EPS Security Context, a non-current EPS Security Context (if available), and unused Authentication Quadruplets in the old MME may be transmitted to the new MME. If the new MME is not in the same serving network domain then only the current EPS Security Context may be transmitted. Authentication Quintuplets shall not be transmitted to the new MME even if the old MME has the Authentication Quintuplets for this UE. The value in Number of Quintuplets field shall be set to '0'. The reasons for not sending Quintuplets are specified in3GPP TS 33.401 [12] clause 6.1.6.