Methods, apparatus, and systems for operational procedures supporting a zero-energy air-interface
Methods, apparatus, systems, architectures and interfaces for method for energy harvesting (EH) performed by a wireless transmit/receive unit (WTRU) are provided. A method may include any of receiving information indicating EH receiver configuration information (EHRCI) including information indicating an EH priority of the WTRU; and on condition that the EH priority of the WTRU indicates that the WTRU is permitted to perform EH, performing the EH on signaling received via the EH receiver according to the EHRCI.
1. A method implemented in a wireless transmit/receive unit (WTRU), the method comprising:
receiving, from a network, a message comprising an indication of a priority value;
operating in a first idle state;
detecting a trigger to transition from the first idle state to a second idle state; and
transitioning from the first idle state to the second idle state in accordance with the priority value.
2. The method of claim 1 , wherein transitioning to the second idle state in accordance with the priority value comprises:
determining whether the priority value indicates a first priority or a second priority;
on a condition that the priority value indicates the first priority, transmitting a request to the network to transition from the first idle state to the second idle state; and
on a condition that the priority indicates the second priority, autonomously transitioning to the second idle state.
3. The method of claim 1 , wherein the first idle state is a first configuration for monitoring paging using a first receiver type, and wherein the second idle state is a second configuration for monitoring paging using a second receiver type.
4. The method of claim 3 , wherein the first receiver type is a main receiver, and wherein the second receiver type is a low-power receiver.
5. The method of claim 1 , wherein the first idle state comprises an RRC_IDLE state over a Uu interface, and wherein the second idle state comprises an RRC_IDLE state over a zero-energy (ZE) interface.
6. The method of claim 1 , wherein detecting the trigger comprises determining that a received signal strength is above a first predefined threshold value.
7. The method of claim 1 , wherein detecting the trigger comprises determining that a battery level of the WTRU is below a second predefined threshold value.
8. The method of claim 1 , further comprising operating in the second idle state.
9. The method of claim 1 , wherein the message comprising the indication of the priority value is an RRC message.
10. The method of claim 1 , further comprising:
receiving, from the network, a second message comprising a second indication of an updated priority value; and
transitioning from the first idle state to the second idle state based on the updated priority value.
11. A wireless transmit/receive unit (WTRU) comprising:
a processor configured to:
receive, via a communication circuit, a message comprising an indication of a priority value;
operate in a first idle state;
detect a trigger to transition from the first idle state to a second idle state; and
transition from the first idle state to the second idle state in accordance with the priority value.
12. The WTRU of claim 11 , wherein the processor being configured to transition to the second idle state in accordance with the priority value comprises the processor being configured to:
determine whether the priority value indicates a first priority or a second priority;
on a condition that the priority value indicates the first priority, transmit, via the communication circuit, a request to the network to transition from the first idle state to the second idle state; and
on a condition that the priority indicates the second priority, autonomously transition to the second idle state.
13. The WTRU of claim 11 , wherein the first idle state is a first configuration for monitoring paging using a first receiver type, and wherein the second idle state is a second configuration for monitoring paging using a second receiver type.
14. The WTRU of claim 13 , wherein the first receiver type is a main receiver, and wherein the second receiver type is a low-power receiver.
15. The WTRU of claim 11 , wherein the first idle state comprises an RRC_IDLE state over a Uu interface, and wherein the second idle state comprises an RRC_IDLE state over a zero-energy (ZE) interface.
16. The WTRU of claim 11 , wherein the processor being configured to detect the trigger comprises the processor being configured to determine that a received signal strength is above a first predefined threshold value.
17. The WTRU of claim 11 , wherein the processor being configured to detect the trigger comprises the processor being configured to determine that a battery level of the WTRU is below a second predefined threshold value.
18. The WTRU of claim 11 , wherein the processor is further configured to operate in the second idle state.
19. The WTRU of claim 11 , wherein the message comprising the indication of the priority value is an RRC message.
20. The WTRU of claim 11 , wherein the processor is further configured to:
receive, via the communication circuit, a second message comprising a second indication of an updated priority value; and
transition from the first idle state to the second idle state based on the updated priority value.