Efficient signaling for machine type communication
Disclosed herein are embodiments for Machine Type Communication (MTC). The techniques disclosed may reduce signaling by transmitting MTC data over control planes and avoiding a full cycle of connection procedures typically required for transmission. MTC data may be directly appended to a control plane message. In addition, in order to reduce the signaling load, a WTRU may autonomously release the connection without being told by the network. Techniques may be used to indicate a network provider's machine type communication (MTC) capability. The MTC services or capabilities that may be provided by a respective network operator may be communicated to a WTRU.
1. A method of small data communication for a wireless transmit/receive unit (WTRU), the method comprising:
receiving a paging message from a wireless communication network;
initiating a radio resource control (RRC) connection request in response to the paging message;
sending an RRC connection request message to the wireless communication network;
receiving an RRC message from the wireless communication network in response to the RRC connection request message, the RRC message including appended small data, the small data including user data, wherein at least the user data is received via a control plane; and
detecting the user data received via the control plane.
2. The method of claim 1 , wherein the small data is machine type communication (MTC) small data.
3. The method of claim 1 , wherein the RRC message includes an information element (IE), the IE indicating that the small data is appended to the RRC message.
4. The method of claim 1 , wherein the sending the RRC connection request message further comprises indicating the RRC connection request message is in response to the paging message.
5. The method of claim 1 , wherein the receiving of the paging message is conducted by the WTRU in an RRC Idle state.
6. The method of claim 1 , wherein the RRC message is at least one of: an RRC connection setup message, an RRC connection accept message, or an RRC connection reject message.
7. The method of claim 1 , wherein the RRC message includes an information element (IE), the IE indicating that the RRC message is a last message containing small data.
8. A wireless transmit/receive unit (WTRU), the WTRU comprising:
a receiver configured to receive a paging message from a wireless communication network;
a processor configured to initiate a radio resource control (RRC) connection request in response to the paging message;
a transmitter configured to send an RRC connection request message to the wireless communication network;
the transmitter further configured to receive an RRC message from the wireless communication network in response to the RRC connection request message, the RRC message including appended small data, the small data including user data, wherein at least the user data is received via a control plane; and
the processor further configured to detect the user data received via the control plane.
9. The WTRU of claim 8 , wherein, the small data is machine type communication (MTC) data.
10. The WTRU of claim 8 , wherein the RRC message includes an information element (IE), the processor configured to interpret the IE as indicating that the small data is appended to the RRC message.
11. The WTRU of claim 8 , wherein the processor is further configured to indicate the RRC connection request message is in response to the paging message.
12. The WTRU of claim 8 , wherein the RRC message is at least one of: an RRC connection setup message, an RRC connection reject message, or an RRC connection accept message.
13. The WTRU of claim 8 , wherein the receiver is further configured to receive the paging message during an RRC Idle state.
14. The WTRU of claim 8 , wherein the RRC message includes an information element (IE), the processor being further configured to interpret the IE as indicating that the RRC message is a last message containing small data.