Method and apparatus for supporting machine-type communications with a mobile-originated-only mode

Abstract

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.

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         21 . 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 set a time value for the first WTRU timer in response to a time value allocated by the wireless network or based on a time value in a WTRU configuration setting.   
     
     
         22 . The WTRU of  claim 21 , wherein the process is further configured 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. 
     
     
         22 . The WTRU of  claim 22 , wherein the message is one of a tracking area update message, a routing area update message, and an attach request message. 
     
     
         23 . The WTRU of  claim 21 , wherein the time value is time. 
     
     
         24 . The WTRU of  claim 22 , wherein the message indicates to the wireless network that the WTRU can operate in the mobile-originated-only mode. 
     
     
         25 . The WTRU of  claim 21 , wherein the time value comprises a cycle time and a reachable period. 
     
     
         26 . The WTRU of  claim 21 , wherein the time value is a reachable period for operating in the mobile originated-and-terminated-mode. 
     
     
         27 . The WTRU of  claim 21 , 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. 
     
     
         28 . The WTRU of  claim 27 , 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. 
     
     
         29 . The WTRU of  claim 21 , 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. 
     
     
         30 . The WTRU of  claim 22 , wherein the message is an RCC message. 
     
     
         31 . A method of using a wireless transmit/receive unit (WTRU) supporting machine-type communications for use in a wireless network, comprising:
 receiving from the wireless network a time value for a first WTRU timer to operate in 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;   setting the time value in the first WTRU timer;   changing the WTRU from a mobile originated-and-terminated-mode to a mobile-originated-only mode in response to the first WTRU timer and the time value.   
     
     
         32 . The method of  claim 31 , further comprising sending 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. 
     
     
         33 . The method of  claim 32 , wherein the message is one of a tracking area update message, a routing area update message, and an attach request message. 
     
     
         34 . The method of  claim 31 , wherein the time value is time. 
     
     
         35 . The method of  claim 32 , wherein the message indicates to the wireless network that the WTRU can operate in the mobile-originated-only mode. 
     
     
         36 . The method of  claim 31 , wherein the time value comprises a cycle time and a reachable period. 
     
     
         37 . The method of  claim 31 , wherein the time value is a reachable period for operating in the mobile originated-and-terminated-mode. 
     
     
         38 . The method of  claim 31 , 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 and the method further comprises changing the WTRU from the mobile-originated-only mode to the mobile originated-and-terminated-mode in response to the second timer. 
     
     
         39 . The method of  claim 31 , 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. 
     
     
         40 . The method of  claim 32 , wherein the message is an RCC message.