Method and apparatus for supporting machine-type communications with a mobile-originated-only mode
A method and apparatus for supporting machine-type communications (MTC) are disclosed. A wireless transmit/receive unit (WTRU) may configure itself to operate in a mobile-originated-only mode. The WTRU may perform no, or a subset of, radio resource control (RRC) idle and/or non-access stratum (NAS) idle/standby state procedures in the mobile-originated-only mode. For example, the WTRU may perform cell reselection but not paging monitoring in the mobile-originated-only mode. Alternatively, the WTRU may perform paging monitoring but not cell reselection and location update. The operation in the mobile-originated-only mode may be triggered explicitly or implicitly. For example, the WTRU may operate in the mobile-originated-only mode if an inactivity timer expires. The WTRU may switch the mode in accordance with a pre-configured schedule. After transition of the operation mode, the WTRU may send a message to the network indicating such mode switch.
1. A wireless transmit/receive unit (WTRU) supporting machine-type communications for use in a wireless network, comprising:
a first WTRU timer that indicates to the WTRU to change from a mobile originated-and-terminated-mode to a mobile-originated-only mode, in which the WTRU is attached to a wireless communications network and performs no cell reselection, no location update procedures, no system information monitoring, or no paging monitoring while attached to the network; and
a processor configured to change the WTRU from the mobile originated-and-terminated-mode to the mobile-originated-only mode in response to the first WTRU timer, and to send a message to the wireless network that comprises a requested parameter for the WTRU timer.
2. The WTRU of claim 1 , wherein the message is one of a tracking area update message, a routing area update message, and an attach request message.
3. The WTRU of claim 1 , wherein the parameter is time.
4. The WTRU of claim 1 , wherein the message indicates to the wireless network that the WTRU can operate in the mobile-originated-only mode.
5. The WTRU of claim 1 , wherein the parameter comprises a cycle time and a reachable period.
6. The WTRU of claim 1 , wherein the parameter is a reachable period for operating in the mobile originated-and-terminated-mode.
7. The WTRU of claim 1 , wherein the WTRU further comprises a second WTRU timer that indicates to the WTRU to change from the mobile-originated-only mode to the mobile originated-and-terminated-mode.
8. The WTRU of claim 7 , wherein the processor further comprises executable instructions for changing the WTRU from the mobile-originated-only mode to the mobile originated-and-terminated-mode in response to the second WTRU timer.
9. The WTRU of claim 1 , wherein the WTRU comprises a battery that provides power for the WTRU and the WTRU uses less battery power on a per unit time basis in the mobile-originated-only mode than when the WTRU is in the mobile originated-and-terminated-mode.
10. The WTRU of claim 1 , wherein the message is an RCC message.
11. A wireless transmit/receive unit (WTRU) supporting machine-type communications for use in a wireless network, comprising:
a first WTRU timer that indicates to the WTRU to change from a mobile originated-and-terminated-mode to a mobile-originated-only mode, in which the WTRU is attached to a wireless communications network and performs no cell reselection, no location update procedures, no system information monitoring, or no paging monitoring while attached to the network; and
a processor configured to operate the WTRU from the mobile originated-and-terminated-mode to the mobile-originated-only mode in response to the first WTRU timer, and to send a message to the wireless network that indicates to the wireless network that the WTRU has a mobile-originated-only mode and requests one or more timer parameters for operating in the mobile-originated-only mode.
12. The WTRU of claim 11 , wherein the one or more timer parameters comprise a timer value for the first WTRU timer and wherein the WTRU processor further comprises executable instructions for changing the WTRU from a mobile originated-and-terminated-mode to the mobile-originated-only mode when the first WTRU timer reaches the timer value.
13. The WTRU of claim 11 , wherein the message is one of an attach message, a location update message, a tracking area update message, or a routing area update message.
14. The WTRU of claim 12 , wherein the processor is configured to set the timer value in the first WRTU timer.
15. The WTRU of claim 12 , wherein the WTRU is configured to receive the timer value from the network.
16. The WTRU of claim 11 , wherein the processor is configured to receive from the network a message indicating to change the WTRU from the mobile originated-and-terminated-mode to a mobile-originated-only mode and wherein the WTRU processor is configured to change the WTRU from the mobile originated-and-terminated-mode to a mobile-originated-only mode in response to the message and the first WTRU timer.
17. The WTRU of claim 11 , wherein the WTRU comprises a battery that provides power for the WTRU and the WTRU uses less battery power on a per unit time basis in the mobile-originated-only mode than when the WTRU is in the mobile originated-and-terminated-mode.
18. The WTRU of claim 11 , wherein the WTRU further comprises a second WTRU timer that indicates to the WTRU to change from the mobile-originated-only mode to the mobile originated-and-terminated-mode.
19. The WTRU of claim 18 , wherein the processor further comprises executable instructions for changing the WTRU from the he mobile-originated-only mode to the mobile originated-and-terminated-mode in response to the second WTRU timer.
20. The WTRU of claim 11 , wherein the message is an RCC message.