Patent ID: 9723648
Date: 2017-08-01
CPC Classifications: H04W

Claim:
1. A non-access stratum (NAS) connection establishment method, comprising: a radio access network node receiving an Access Stratum (AS) message carrying a non-access stratum (NAS) request message from a machine type communication (MTC) user equipment (UE), wherein, the AS message further carries a request reason of the AS request message; the radio access network node converting the request reason in the AS message into priority indication information, and sending a signaling to a core network node, wherein the signaling comprises the priority indication information and the NAS request message; the core network node determining a priority of the NAS request message based on the priority indication information in the signaling; when a congestion occurs in the core network, the core network node sends a rejection response message to a UE that sends an NAS request message with a low priority.