Fifth generation (5G) new radio (NR) network power savings

1. A method of wireless communication, comprising:

determining, by a base station (BS) of a wireless communication network, to enter a sleep mode;

receiving, by the BS from one or more user equipment (UEs), an uplink (UL) data status comprising a buffer status of the one or more UEs;

determining, by the BS, a start of a sleep mode period for the BS based on the received UL data status;

transmitting, by the BS to the one or more UEs, a communication signal indicating that the BS will enter the sleep mode and the start of the sleep mode period; and

operating, by the BS, in the sleep mode for the sleep mode period.

2. The method of claim 1 , wherein the operating in the sleep mode includes turning off power to one or more components of the BS, the one or more components including at least one of a radio frequency (RF) processing component, a baseband processing component, or an upper layer processing component of the BS.

3. The method of claim 1 , wherein the operating in the sleep mode further includes:

transmitting, by the BS, a downlink system information signal indicating a random access channel (RACH) resource; and

receiving, by the BS from a second UE different from the one or more UEs, a RACH preamble signal based on the RACH resource.

4. The method of claim 1 , wherein the operating in the sleep mode includes:

periodically switching, by the BS, between a sleep window of the sleep mode period and an active window of the sleep mode period;

refraining, by the BS during the sleep window of the sleep mode period, from performing uplink and downlink communications; and

performing, by the BS during the active window of the sleep mode period, at least one of an uplink communication or a downlink communication.

5. The method of claim 1 , wherein the transmitting the communication signal includes:

transmitting the communication signal to the one or more UEs using at least one of a layer one (L1) signaling, a media access control element (MAC CE) signaling, radio resource control (RRC) signaling, or a broadcast signaling.

6. The method of claim 1 , further comprising:

transmitting, by the BS to the one or more UEs, sleep mode configuration information via a radio resource control (RRC) message.

7. The method of claim 1 , wherein the transmitting the communication signal further includes:

transmitting, by the BS to the one or more UEs, an indication of at least one of a length of the sleep mode period, or an end of the sleep mode period.

8. The method of claim 1 , wherein

the received UL data status further comprises a power supply condition of the one or more UEs.

9. The method of claim 1 , further comprising:

transmitting, by the BS to the one or more UEs, a request for the one or more UEs to transmit the UL data status to the BS.

10. A method of wireless communication, comprising:

transmitting, by a user equipment (UE) to a base station (BS), an uplink (UL) data status comprising a buffer status of the UE;

receiving, by the UE from the BS, a communication signal indicating that the BS will enter a sleep mode for a sleep mode period and a start of the sleep mode period, the start of the sleep mode period being based on the UL data status; and

refraining, by the UE during one or more sleep windows of the sleep mode period, from performing uplink communications.

11. The method of claim 10 , further comprising:

communicating, by the UE with the BS, at least one of an uplink communication signal or a downlink communication signal during one or more active windows of the sleep mode period.

12. The method of claim 10 , wherein the receiving the communication signal includes:

receiving the communication signal via at least one of a layer one (L1) signaling, a media access control element (MAC CE) signaling, a radio resource control (RRC) signaling, or a broadcast signaling.

13. The method of claim 10 , further comprising:

receiving, by the UE from the BS, sleep mode configuration information via a radio resource control (RRC) message.

14. The method of claim 10 , wherein the receiving the communication signal further includes:

receiving an indication of at least one of a length of the sleep mode period, a length of the one or more sleep windows of the sleep mode period, or an end of the sleep mode period.

15. The method of claim 10 , further comprising:

receiving, by the UE from the BS prior to the transmitting the UL data status, a request for the UL data status.

16. The method of claim 10 , further comprising:

synchronizing, by the UE, during at least one of the one or more sleep windows of the sleep mode period, timing with the BS.

17. The method of claim 10 , further comprising:

receiving, by the UE from the BS, a system information signal including sleep mode information associated with the BS; and

performing, by the UE with the BS, a random access procedure based on the sleep mode information.

18. A base station (BS) of a wireless communication network, comprising:

a processor configured to:

determine to enter a sleep mode;

determine a start of a sleep mode period for the BS based on an uplink (UL) data status comprising a buffer status of one or more user equipment (UEs); and

operate in the sleep mode for the sleep mode period based on the determined start of the sleep mode period; and

a transceiver configured to:

receive, from the one or more UEs prior to determining the start of the sleep mode period, the UL data status comprising the buffer status of the one or more UEs; and

transmit, to the one or more UEs, a communication signal indicating that the BS will enter the sleep mode and the start of the sleep mode period.

19. The BS of claim 18 , further comprising:

at least one of a radio frequency (RF) processing component, a baseband processing component, or an upper layer processing component,

wherein the processor is further configured to operate in the sleep mode by:

turning off power to the at least one of the RF processing component, the baseband processing component, or the upper layer processing component.

20. The BS of claim 18 , wherein the processor configured to operate in the sleep mode is configured to:

transmit, via the transceiver, a downlink system information signal indicating a random access channel (RACH) resource; and

receive, via the transceiver, a second UE different from the one or more UEs, a RACH preamble signal based on the RACH resource.

21. The BS of claim 18 , wherein the processor configured to operate in the sleep mode is configured to:

periodically switch between a sleep window of the sleep mode period and an active window of the sleep mode period;

refrain, during the sleep window of the sleep mode period, from performing uplink and downlink communications; and

perform, during the active window of the sleep mode period, at least one of an uplink communication or a downlink communication.

22. The BS of claim 18 , wherein the transceiver is further configured to:

transmit, to the one or more UEs, sleep mode configuration information via a radio resource control (RRC) message.

23. The BS of claim 18 , wherein

the received UL data status further comprises a power supply condition of the one or more UEs.

24. The BS of claim 18 , wherein the transceiver is further configured to:

transmit, to the one or more UEs, a request for the one or more UEs to transmit the UL data status to the BS.

25. A user equipment (UE) comprising:

a transceiver configured to:

transmit, to a base station (BS), an uplink (UL) data status comprising a buffer status of the UE; and

receive, from the BS, a communication signal indicating that the BS will enter a sleep mode for a sleep mode period and a start of the sleep mode period, the start of the sleep mode period being based on the UL data status; and

a processor configured to refrain, during one or more sleep windows of the sleep mode period, from performing uplink communications.

26. The UE of claim 25 , wherein the transceiver is further configured to:

communicate, with the BS, at least one of an uplink communication signal or a downlink communication signal during one or more active windows of the sleep mode period.

27. The UE of claim 25 , wherein the transceiver is further configured to:

receive, from the BS, sleep mode configuration information via a radio resource control (RRC) message.

28. The UE of claim 25 , wherein the transceiver is further configured to:

receive, from the BS prior to transmitting the UL data status, a request for the UL data status.

29. The UE of claim 25 , wherein the processor is further configured to:

synchronize, during at least one of the one or more sleep windows of the sleep mode period, timing with the BS.

30. The UE of claim 25 , wherein:

the transceiver is further configured to:

receive, from the BS, a system information signal including sleep mode information associated with the BS, and

the processor is further configured to:

perform, with the BS, a random access procedure based on the sleep mode information.

31. A user equipment (UE) comprising:

a transceiver configured to:

transmit, to a base station (BS), an uplink (UL) data status comprising a buffer status of the UE; and

receive, from the BS, a communication signal indicating that the BS will enter a sleep mode for a sleep mode period and a start of the sleep mode period, the start of the sleep mode period being based on the UL data status; and

a processor configured to:

refrain, during one or more sleep windows of the sleep mode period, from performing uplink communications; and

maintain synchronization between the UE and the BS during the sleep mode period.

32. The UE of claim 31 , wherein the transceiver is further configured to:

communicate, with the BS, at least one of an uplink communication signal or a downlink communication signal during one or more active windows of the sleep mode period.

33. The UE of claim 31 , wherein the transceiver is further configured to:

receive, from the BS, sleep mode configuration information via a radio resource control (RRC) message.

34. The UE of claim 31 , wherein the transceiver is further configured to:

receive, from the BS prior to transmitting the UL data status, a request for the UL data status.

35. The UE of claim 31 , wherein the processor is further configured, as part of maintaining the synchronization, to:

synchronize, during at least one of the one or more sleep windows of the sleep mode period, timing with the BS.

36. The UE of claim 31 , wherein:

the transceiver is further configured to receive, from the BS, a system information signal including sleep mode information associated with the BS, and

the processor is further configured to perform, with the BS, a random access procedure based on the sleep mode information.