METHOD, DEVICE AND SYSTEM FOR NON VOICE EMERGENCY SERVICE SESSION ESTABLISHMENT

摘要

A method, device and system for Non Voice Emergency Service (NOVES) session establishment are disclosed by the present invention, which include: receiving a NOVES session establishment request, an identification corresponding to the NOVES session, and a default Allocation and Retention Priority (ARP) value of an Evolved Packet System (EPS) bearer used in the NOVES session; when the priority indicated by the default ARP value of the EPS bearer is lower than the priority indicated by a preset value, transmitting a first modification policy to a policy execution device in order to modify the default APR value of the EPS bearer to the preset value. In the NOVES session establishment method disclosed by the embodiments of the present invention, Policy Charging and Rule Function (PCRF) allocates a preset value for ARP of the EPS bearer used in the NOVES session; when the priority corresponding to the default ARP value of the EPS bearer is lower than the priority indicated by the preset value, the default ARP value of the EPS bearer is modified to the preset value, in order that the NOVES session is established on the EPS bearer with higher level, and the reliability of the session is improved.