Access control method of machine type communication terminal and system thereof
A technology of machine type communication and access control, applied in the field of communication, which can solve the problem of MTC terminal roaming unable to determine when to initiate an access request, etc.
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Embodiment 1
[0043] When a connected MTC terminal (referred to as ME) roams to a visited network through handover, if the core network element of the home network (source core network element) and the core network element of the visited network (target core network element) If the allowed access time periods overlap, and the ME switches to the visited network within the overlapped time period, the ME can successfully switch to the visited network. The target core network element (target MME) may notify the ME of the local access allowed time period information through a handover success response message during the handover success response process. If the permitted access period of the source core network element (source MME) and the target MME do not overlap, the ME cannot successfully switch to the visited network within the permitted access period contracted by the home network, and the target MME can During the response process, the source MME is notified of the local allowed access pe...
Embodiment 2
[0066] The target MME in the visited network can notify the target base station of the local access time period information for a certain ME or a certain type of ME. A certain type of ME can classify MEs according to service types, classify MEs according to groups, or classify MEs according to groups. Classify MEs by priority. The target base station notifies the ME of the local allowed access period information through a system message. When an ME in the IDLE state enters the visited network through cell reselection or a ME in the connected state enters the visited network through handover, the ME obtains the local access time period information through a broadcast message, and saves the obtained The time period information, and the attach request is initiated within this time period.
[0067] Figure 4 It is the access control method for ME when the ME roams to the visited network through cell reselection or handover in this embodiment, including:
[0068] 401: The target...
Embodiment 3
[0078] The target MME in the visited network may notify the ME of the local access allowed time period information through NAS (Non-Access Stratum) signaling. If the ME in the IDLE state enters the area managed by the target MME of the visited network through cell reselection (after roaming to the visited network), the ME does not know the local access period information of the target MME. The ME initiates an attach request to the core network. If the attach request is initiated within the allowed access time period of the visited network, the core network allows the ME to access, and the ME can successfully access the network. In the NAS message, the local access time period information is notified to the ME through the allowable access response message (attach accept), or the local time period information is notified to the ME through a periodic update process; if the ME The time when the attach request is initiated is not within the local allowed access period, the core net...
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