Hop-count indication in wireless systems

1. A method for wireless communications at a relay network node in a wireless communications system, comprising:

identifying a hop-count between the relay network node and a network node in the wireless communications system;

selecting a set of time-frequency resources for transmission of a signal to a second network node in the wireless communications system;

generating the signal based at least in part on a generation sequence, wherein the signal conveys an indication of the hop-count and the indication of the hop-count is based at least in part on the set of time-frequency resources or the generation sequence;

determining, based at least in part on the hop-count, a resource pattern or a slot structure for the relay network node, a parent network node in communication with the relay network node, a child network node in communication with the relay network node, an access device in communication with the relay network node, or any combination thereof; and

transmitting the signal over the set of time-frequency resources to the second network node.

2. The method of claim 1 , wherein generating the signal comprises:

generating at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, a data channel, a demodulation reference signal (DMRS) associated with the control channel, or a DMRS associated with the data channel based at least in part on the set of time-frequency resources, wherein the set of time-frequency resources conveys the indication of the hop-count.

3. The method of claim 1 , further comprising:

generating a demodulation reference signal (DMRS) sequence associated with a control channel or a data channel, wherein the DMRS sequence conveys the indication of the hop-count.

4. The method of claim 1 , wherein generating the signal comprises:

generating at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, or a data channel based at least in part on the generation sequence, wherein the generation sequence conveys the indication of the hop-count.

5. The method of claim 4 , wherein the generation sequence is a scrambling sequence or a base sequence.

6. The method of claim 1 , further comprising:

determining that one or more nodes of the wireless communications system shared a cell identifier (ID) with the relay network node; and

generating a second ID based at least in part on the cell ID and the hop-count, wherein the second ID is used as the generation sequence for generating the signal.

7. The method of claim 6 , wherein the second ID is generated based at least in part on a sibling count or a random value.

8. The method of claim 1 , wherein the resource pattern or the slot structure is determined based at least in part on a mapping rule.

9. The method of claim 1 , wherein the resource pattern or the slot structure is associated with a semi-static resource allocation.

10. The method of claim 1 , further comprising:

indicating the hop-count via a second signal different from the signal.

11. The method of claim 10 , wherein the second signal comprises a system information block (SIB).

12. The method of claim 1 , wherein the network node is an anchor network node.

13. A method for wireless communications at a first network node in a wireless communications system, comprising:

receiving a signal from a relay network node in the wireless communications system, the signal indicative of a hop-count between the relay network node and a second network node in the wireless communications system;

determining the hop-count between the relay network node and the second network node based at least in part on the received signal;

determining a resource pattern or a slot structure for communication with the relay network node based at least in part on the hop-count, wherein the resource pattern or the slot structure is determined based at least in part on a mapping rule; and

communicating with the relay network node or a child network node based at least in part on the hop-count.

14. The method of claim 13 , further comprising:

receiving, over a set of time-frequency resources, at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, a data channel, or a demodulation reference signal (DMRS) associated with the control channel or the data channel; and

determining the hop-count based at least in part on the set of time-frequency resources.

15. The method of claim 14 , wherein the set of time-frequency resources conveys an indication of the hop-count.

16. The method of claim 13 , further comprising:

receiving a demodulation reference signal (DMRS) sequence associated with a control channel or a data channel; and

determining the hop-count based at least in part on the DMRS sequence.

17. The method of claim 16 , wherein the DMRS sequence conveys an indication of the hop-count.

18. The method of claim 13 , further comprising:

receiving at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, or a data channel associated with a generation sequence; and

determining the hop-count based at least in part on the generation sequence.

19. The method of claim 18 , wherein:

the generation sequence comprises a scrambling sequence or a base sequence; and

the generation sequence conveys an indication of the hop-count.

20. The method of claim 13 , further comprising:

communicating with the relay network node or the child network node based at least in part on the resource pattern, the slot structure, or a combination thereof.

21. The method of claim 13 , wherein the resource pattern or the slot structure is associated with a semi-static resource allocation.

22. The method of claim 13 , wherein:

the signal is a broadcast signal; and

a set of time-frequency resources associated with the signal or a periodicity of the signal indicates the hop-count.

23. The method of claim 13 , wherein receiving the signal comprises:

receiving a common channel carrying information related to multiple hop-counts; and

determining the hop-count for communication with the relay network node or the child network node based at least in part on the common channel.

24. An apparatus for wireless communications at a relay network node in a wireless communications system, comprising:

a processor,

memory in electronic communication with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

identify a hop-count between the relay network node and a network node in the wireless communications system;

select a set of time-frequency resources for transmission of a signal to a second network node in the wireless communications system;

generate the signal based at least in part on a generation sequence, wherein the signal conveys an indication of the hop-count and the indication of the hop-count is based at least in part on the set of time-frequency resources or the generation sequence;

determine, based at least in part on the hop-count, a resource pattern or a slot structure for the relay network node, a parent network node in communication with the relay network node, a child network node in communication with the relay network node, an access device in communication with the relay network node, or any combination thereof; and

transmit the signal over the set of time-frequency resources to the second network node.

25. The apparatus of claim 24 , wherein the instructions to generate the signal are executable by the processor to cause the apparatus to:

generate at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, a data channel, a demodulation reference signal (DMRS) associated with the control channel, or a DMRS associated with the data channel based at least in part on the set of time-frequency resources, wherein the set of time-frequency resources conveys the indication of the hop-count.

26. The apparatus of claim 24 , wherein the instructions are further executable by the processor to cause the apparatus to:

generate a demodulation reference signal (DMRS) sequence associated with a control channel or a data channel, wherein the DMRS sequence conveys the indication of the hop-count.

27. An apparatus for wireless communications at a first network node in a wireless communications system, comprising:

a processor,

memory in electronic communication with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to:

receive a signal from a relay network node in the wireless communications system, the signal indicative of a hop-count between the relay network node and a second network node in the wireless communications system;

determine the hop-count between the relay network node and the second network node based at least in part on the received signal;

determine a resource pattern or a slot structure for communication with the relay network node based at least in part on the hop-count, wherein the resource pattern or the slot structure is determined based at least in part on a mapping rule; and

communicate with the relay network node or a child network node based at least in part on the hop-count.

28. The apparatus of claim 27 , wherein the instructions are further executable by the processor to cause the apparatus to:

receive, over a set of time-frequency resources, at least one of a channel state information reference signal (CSI-RS), a tracking reference signal (TRS), a sounding reference signal (SRS), a control channel, a data channel, or a demodulation reference signal (DMRS) associated with the control channel or the data channel; and

determine the hop-count based at least in part on the set of time-frequency resources.