PLMN SPECIFIC IMPLICIT REJECT FEATURE FOR CONTROLLING MOBILE STATION SERVICE ESTABLISHMENT

摘要

A method is provided by a network node (122) for restricting access attempts by a plurality of mobile stations (MSs). The network node (122) supports a Multi- Operator Core Network (MOCN) having a plurality of Public Land M obile Networks (PLMNs). The method includes determining that an overload condition is occurring. Responsive to determining that the overload condition is occurring, an Implicit Reject indication is communicated within one or more Access Grant Channel (AGCH) messages or Paging Channel (PCI 1) messages to the MSs identifying that an Implicit Reject feature is active to restrict access attempts to the network" node ( 122). A broadcast message is communicated to the MSs containing information identifying at least one of the PLMNs to which the Implicit Reject feature applies. Any of the MSs registered with the at least one of the PLMNs identified by the information can restrict their access attempts to the network node (122). A corresponding method by a MS and corresponding network nodes and MSs are provided.