Access control method and device

摘要

Disclosed is an access control method, for use in implementing improved access control. The method comprises: during a random access process, on the basis of a current load of a random access network (RAN) and a core network (CN) and of terminal or service information reported by a user equipment (UE), the RAN judging whether or not access to the RAN and to the CN is allowed; when access is denied by at least one network between the RAN and the CN, the RAN transmitting to the UE an instruction message having attached therein a backoff time corresponding to the access denying network. Also disclosed is a device for implementing the method.

主权项

1. An access control method, comprising:
determining, by a Radio Access Network, RAN, whether a User Equipment, UE, is allowed for an access to the RAN and a Core Network, CN, according to current load conditions of the RAN and the CN and device or service information reported by the UE in an random access procedure; and when an access to at least one of the RAN and the CN is rejected, sending, by the RAN, to the UE an indication message carrying a wait time corresponding to the access rejecting network; wherein the wait time corresponding to the access rejecting network comprises a wait time for an RAN overload or a wait time for a CN overload or both the wait time for an RAN overload and the wait time for a CN overload; wherein without distinguishing a single-CN node overload, the RAN sends the indication message carrying the wait time corresponding to the access rejecting network in an RRC Connection Reject message; and with a single-CN node overload to be distinguished, if an access request does not carry a UE identifier corresponding to an MME with which the UE registers, then the method further comprises: receiving an RRC Connection Setup Complete message sent from the UE; and sending by the RAN to the UE the indication message carrying the wait time corresponding to the access rejecting network comprises: if the RRC Connection Setup Complete message carries the UE identifier corresponding to the MME with which the UE registers and the MME corresponding to the UE identifier has an S1 interface with the RAN and is overloaded, or all of MMEs in an MME pool are overloaded, then the RAN sends the indication message carrying the wait time for a CN overload in an RRC Connection Release message; or if the access request carries the UE identifier corresponding to the MME with which the UE registers, the RAN sends the indication message carrying the wait time corresponding to the access rejecting network in the RRC Connection Reject message.