Method, apparatus and system for processing priority services

A system for processing a service, the system comprising:

• a mobility management entity (MME) that is configured to receive a signaling, wherein the signaling comprises information indicating a priority of a service to be carried out with a user equipment (UE), the MME further configured to send a first paging message to a base station attached by the UE, wherein the first paging message comprises an indication of the priority of the service so as to trigger the base station perform a paging procedure with priority;
• and wherein an existing bearer that is used for the service is updated before the MME receives the signaling;
• and
• a proxy-call session control function (P-CSCF), wherein the P-CSCF is configured to determine the priority of the service and to indicate the priority of the service to a Policy and Charging Rules Function (PCRF) so as to trigger to update the existing bearer, wherein the P-CSCF is configured to determine the priority of the service based on a received priority indication of the service.