22.3683GPPRelease 17Service requirements for Machine-Type Communications (MTC)Stage 1TS
The MTC Feature Time Controlled is intended for use with MTC Applications that can tolerate to send or receive data only during defined time intervals and avoid unnecessary signalling outside these defined time intervals. The network operator may allow such MTC Applications to send/receive data and signalling outside of these defined time intervals but charge differently for such traffic.
For the Time Controlled MTC Feature:
– The network operator shall be able to reject access requests per MTC Device (e.g. attach to the network or set up a data connection) outside a defined access grant time interval.
Note 1: The Time Controlled MTC Feature does not affect the MTC Server to send trigger indications to the MTC Device.
– The network operator shall be able to allow access (e.g. attach to the network or set up a data connection) outside a defined access grant time interval and charge this differently.
– The network shall reject access requests per MTC Device (e.g. attach to the network or set up a data connection) during a defined forbidden time interval (e.g. to allow maintenance of a MTC Server).
– The local network shall be able to alter the access grant time interval based on local criteria (e.g. daily traffic load, time zones). The forbidden time interval shall not be altered.
Note 2: It is assumed that an access grant time interval will not overlap a forbidden time interval.
Note 3: "Local network" can refer to a VPLMN in roaming case, or to the local part of a large RPLMN (e.g. that spans across multiple time zones).
– The network shall be able to restrict the duration of access by terminating access (e.g. detach or disconnect a data connection) after a defined access duration.
Note 4: The defined access duration (e.g. 10 minutes) is pre-agreed between the network operator and the MTC Subscriber, and is typically long enough to ensure the completion of normal communication between MTC Device and MTC Server.
– The MTC Device may disconnect immediately when it finishes its communications with the MTC Server before wait until the end of the access duration.
– The network shall communicate the (altered) access grant time interval and the access duration to the MTC Device.
– The network may communicate the (altered) access grant time interval and the access duration to the MTC Server/MTC User.
Note 5: It is desirable that access of MTC Devices with the same access grant time interval is distributed across this interval in a manner to reduce peaks in the signalling and data traffic.