Timing adjustment for wireless remote units

1. A wireless forwarding node, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

determine a first timing reference configuration for communicating with a first wireless node;

determine a second timing reference configuration for communicating with a second wireless node; and

forward communications between the first wireless node and the second wireless node based at least in part on the first timing reference configuration and the second timing reference configuration, wherein forwarding communications between the first wireless node and the second wireless node comprises:

receiving, from the first wireless node or the second wireless node, a signal to be forwarded to the other of the first wireless node or the second wireless node, wherein the signal is associated with a power delay profile including multiple channel taps received at different times; and

forwarding the signal to the first wireless node or the second wireless node using a cyclic prefix aligned with an earliest of the multiple channel taps that satisfies a threshold.

2. The wireless forwarding node of claim 1 , wherein the one or more processors, to determine the first timing reference configuration, are further configured to:

determine a receive timing for receiving one or more signals from the first wireless node based at least in part on one or more reference signal transmissions received from the first wireless node; and

determine a transmit timing for forwarding one or more signals to the first wireless node based at least in part on one or more timing advance commands received from a control node or the first wireless node.

3. The wireless forwarding node of claim 2 , wherein the one or more processors, to determine the receive timing, are further configured to:

receive a signal from the first wireless node;

forward the signal back to the first wireless node; and

receive, from the first wireless node or a control node, a timing adjustment command for the receive timing that indicates an estimated timing offset based at least in part on the signal forwarded back to the first wireless node.

4. The wireless forwarding node of claim 1 , wherein the second timing reference configuration includes one or more of a transmit timing for forwarding one or more signals from the first wireless node to the second wireless node, or a receive timing for receiving one or more signals from the second wireless node to be forwarded to the first wireless node.

5. The wireless forwarding node of claim 4 , wherein the transmit timing is based at least in part on one or more of: a timing adjustment command received from a control node or the first wireless node, or a round trip time between the wireless forwarding node and the first wireless node.

6. The wireless forwarding node of claim 4 , wherein the receive timing has a fixed value or a value that is based at least in part on a timing adjustment command received from the first wireless node.

7. The wireless forwarding node of claim 4 , wherein the receive timing is autonomously determined within a window with respect to another timing reference.

8. The wireless forwarding node of claim 7 , wherein a size of the window is fixed; preconfigured by an operations, administration, and maintenance entity; or dynamically indicated by a control node or the first wireless node.

9. The wireless forwarding node of claim 4 , wherein the receive timing is determined based at least in part on one or more reference signal transmissions received from the second wireless node.

10. The wireless forwarding node of claim 4 , wherein the one or more processors are further configured to:

transmit, to a control node or the first wireless node, information indicating an estimated timing offset associated with the receive timing.

11. The wireless forwarding node of claim 4 , wherein the one or more processors are further configured to:

receive, from a control node or the first wireless node, information indicating an adjustment to the receive timing associated with the wireless forwarding node.

12. A control node, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

determine an adjustment to one or more timing reference configurations associated with a wireless forwarding node configured to forward communications between a first wireless node and a second wireless node; and

transmit, to the wireless forwarding node, one or more timing adjustment commands that indicate the adjustment to the one or more timing reference configurations to adjust a downlink or an uplink receive timing to align a cyclic prefix of a forwarded signal with an earliest channel tap that satisfies a threshold.

13. The control node of claim 12 , wherein the one or more timing adjustment commands indicate that the adjustment is to be applied to one or more of:

a first receive timing associated with the wireless forwarding node receiving one or more signals from the first wireless node to be forwarded to the second wireless node,

a first transmit timing associated with the wireless forwarding node forwarding the one or more signals received from the first wireless node to the second wireless node,

a second receive timing associated with the wireless forwarding node receiving one or more signals from the second wireless node to be forwarded to the first wireless node, or

a second transmit timing associated with the wireless forwarding node forwarding the one or more signals received from the second wireless node to the first wireless node.

14. The control node of claim 12 , wherein the adjustment to the one or more timing reference configurations is based at least in part on timing estimation feedback received from one or more of the wireless forwarding node, the first wireless node, or the second wireless node.

15. The control node of claim 12 , wherein the one or more processors are further configured to:

transmit, to one or more of the first wireless node or the second wireless node, one or more timing adjustment commands that indicate an adjustment to one or more timing reference configurations associated with communicating with the wireless forwarding node.

16. A transmitter node, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

transmit, to a wireless forwarding node, a signal to be forwarded to a wireless receiver node, wherein the wireless forwarding node is associated with a receive timing for receiving the signal from the transmitter node;

determine an estimated timing offset to be applied to the receive timing associated with the wireless forwarding node based at least in part on the wireless forwarding node forwarding the signal back to the transmitter node; and

transmit, to the wireless forwarding node, a timing adjustment command that indicates the estimated timing offset to be applied to the receive timing to adjust the receive timing to align a cyclic prefix of the signal with an earliest channel tap that satisfies a threshold.

17. The transmitter node of claim 16 , wherein the one or more processors are further configured to:

transmit, to the wireless forwarding node, an instruction to forward the signal back to the transmitter node; and

receive the forwarded signal from the wireless forwarding node based at least in part on the instruction.

18. The transmitter node of claim 16 , wherein the signal is a wideband signal.

19. A method of wireless communication performed by a wireless forwarding node, comprising:

determining a first timing reference configuration for communicating with a first wireless node;

determining a second timing reference configuration for communicating with a second wireless node; and

forwarding communications between the first wireless node and the second wireless node based at least in part on the first timing reference configuration and the second timing reference configuration, wherein forwarding communications between the first wireless node and the second wireless node comprises:

receiving, from the first wireless node or the second wireless node, a signal to be forwarded to the other of the first wireless node or the second wireless node, wherein the signal is associated with a power delay profile including multiple channel taps received at different times; and

forwarding the signal to the first wireless node or the second wireless node using a cyclic prefix aligned with an earliest of the multiple channel taps that satisfies a threshold.

20. The method of claim 19 , wherein determining the first timing reference configuration includes:

determining a receive timing for receiving one or more signals from the first wireless node based at least in part on one or more reference signal transmissions received from the first wireless node; and

determining a transmit timing for forwarding one or more signals to the first wireless node based at least in part on one or more timing advance commands received from a control node or the first wireless node.

21. The method of claim 20 , wherein determining the receive timing includes:

receiving a signal from the first wireless node;

forwarding the signal back to the first wireless node; and

receiving, from the first wireless node or a control node, a timing adjustment command for the receive timing that indicates an estimated timing offset based at least in part on the signal forwarded back to the first wireless node.

22. The method of claim 19 , wherein the second timing reference configuration includes one or more of a transmit timing for forwarding one or more signals from the first wireless node to the second wireless node, or a receive timing for receiving one or more signals from the second wireless node to be forwarded to the first wireless node.

23. The method of claim 22 , wherein the transmit timing is based at least in part on one or more of: a timing adjustment command received from a control node or the first wireless node, or a round trip time between the wireless forwarding node and the first wireless node.

24. The method of claim 22 , wherein the receive timing has a fixed value or a value that is based at least in part on a timing adjustment command received from the first wireless node.

25. The method of claim 22 , wherein the receive timing is autonomously determined within a window with respect to another timing reference.

26. The method of claim 22 , wherein the receive timing is determined based at least in part on one or more reference signal transmissions received from the second wireless node.