User information obtaining method and apparatus, identifier correspondence storage method and apparatus, and device

An identifier correspondence storage method, comprising:

• obtaining, by a mobility management entity MME, external identifier information of user equipment UE from a home subscriber server HSS;
• obtaining, by the MME, a context identifier of the UE;
• generating, by the MME, an identifier correspondence, wherein the identifier correspondence is a correspondence between the external identifier information of the UE and the context identifier of the UE;
• and
• sending, by the MME, the identifier correspondence to an eNodeB, wherein the eNodeB is configured to store the identifier correspondence, or is configured to store the identifier correspondence onto a Mobile Edge Computing MEC platform.

A user information obtaining apparatus, comprising:

• a receiving unit, configured to receive a first user information obtaining request, wherein the first user information obtaining request carries external identifier information of user equipment UE;
• a determining unit, configured to determine, based on a prestored identifier correspondence, a context identifier corresponding to the external identifier information, wherein the identifier correspondence is a correspondence between the external identifier information of the UE and the context identifier of the UE;
• and
• a sending unit, configured to send a second user information obtaining request to an evolved NodeB eNodeB, wherein the second user information obtaining request carries the context identifier, wherein
• the receiving unit is further configured to receive user information sent by the eNodeB in response to the second user information obtaining request, wherein the user information is obtained by the eNodeB from a context indicated by the context identifier.

A user information obtaining apparatus, comprising:

• a receiving unit, configured to receive a second user information obtaining request sent by a Mobile Edge Computing MEC platform, wherein the second user information obtaining request comprises external identifier information of user equipment UE;
• a processing unit, configured to:
• determine, based on a prestored identifier correspondence, a context identifier corresponding to the external identifier information, wherein the identifier correspondence is a correspondence between the external identifier information of the UE and the context identifier of the UE;
• and obtain, from a context indicated by the context identifier, user information requested by using the second user information obtaining request;
• and
• a sending unit, configured to send the user information to the MEC.

An identifier correspondence storage apparatus, comprising:

• an obtaining unit, configured to:
• obtain external identifier information of user equipment UE from a home subscriber server HSS, and obtain a context identifier of the UE from an eNodeB;
• a processing unit, configured to generate an identifier correspondence, wherein the identifier correspondence is a correspondence between the external identifier information of the UE and the context identifier of the UE;
• and
• a sending unit, configured to send the identifier correspondence to the eNodeB, wherein the eNodeB is configured to store the identifier correspondence, or is configured to store the identifier correspondence onto a Mobile Edge Computing MEC platform.