Techniques for full-duplex communications based on a reference signal configuration
Aspects described herein relate to receiving, over downlink resources allocated in one or more symbols used for full-duplex communications, a first set of resource blocks having a first reference signal configuration that is different in at least one of uniformity or density, in frequency, of resource elements indicated for receiving a reference signal than a second reference signal configuration. At least a first number of resource elements in the first set of resource blocks can be calculated based on the first reference signal configuration, which can facilitate determination of transport block size for decoding downlink communications. Another aspect relates to transmitting according to the first reference signal configuration and/or second reference signal configuration.
1. An apparatus for wireless communication, comprising:
a transceiver;
a memory; and
one or more processors coupled with the memory and the transceiver, wherein the apparatus is configured to:
receive, in a symbol used for full-duplex communication, at least two sets of resource blocks for one instance of a transmission of a reference signal, the at least two sets of resource blocks including a first set of resource blocks including a first number of resource elements corresponding to the reference signal and a second set of resource blocks including a second number of resource elements corresponding to the reference signal,
wherein the first number of resource elements correspond to a first reference signal configuration and the second number of resource elements correspond a second reference signal configuration, and
wherein the first number of resource elements in accordance with the first reference signal configuration are different in at least one of uniformity or density, in frequency, than the second number of resource elements in accordance with the second reference signal configuration; and
decode, according to a transport block size that is based at least in part on at least the first number of resource elements, a downlink communication.
2. The apparatus of claim 1 , wherein the apparatus is configured to:
calculate, based on the first reference signal configuration, the first number of resource elements in the first set of resource blocks; and
calculate, based on the second reference signal configuration, the second number of resource elements in the second set of resource blocks,
wherein, to decode the downlink communication, the apparatus is configured to decode the downlink communication according to the transport block size further based at least in part on the second number of resource elements.
3. The apparatus of claim 1 , wherein the first reference signal configuration indicates at least the first number of resource elements.
4. The apparatus of claim 3 , wherein the first reference signal configuration indicates the first number of resource elements at least by indication of a first set of relative frequency locations within the first set of resource blocks.
5. The apparatus of claim 4 , wherein the first set of relative frequency locations indicates different relative frequency locations than a second set of relative frequency locations associated with the second reference signal configuration.
6. The apparatus of claim 4 , wherein the first set of relative frequency locations are more dense within the first set of resource blocks than a second set of relative frequency locations associated with the second reference signal configuration.
7. The apparatus of claim 4 , wherein the second reference signal configuration indicates at least the second number of resource elements, wherein the second reference signal configuration indicates the second number of resource elements at least by indication of a second set of relative frequency locations within the second set of resource blocks, wherein the first set of relative frequency locations are not uniform within the first set of resource blocks, and wherein the second set of relative frequency locations are uniform within the second set of resource blocks.
8. The apparatus of claim 4 , wherein the second reference signal configuration indicates at least the second number of resource elements, and wherein the first set of resource blocks are closer in frequency than the second set of resource blocks.
9. The apparatus of claim 3 , wherein the second reference signal configuration indicates at least the second number of resource elements.
10. The apparatus of claim 9 , wherein the first reference signal configuration indicates at least a first overhead metric associated with the first set of resource blocks, wherein the second reference signal configuration indicates at least a second overhead metric associated with the second set of resource blocks, and wherein the apparatus is configured to:
calculate, based on the first reference signal configuration, the first number of resource elements in the first set of resource blocks; and
calculate, based on the second reference signal configuration, the second number of resource elements in the second set of resource blocks.
11. The apparatus of claim 1 , wherein the second reference signal configuration indicates at least the second number of resource elements, wherein the apparatus is configured to:
calculate the first number of resource elements based on a number of allocated resource blocks and frequency location of the allocated resource blocks; and
calculate the second number of resource elements, wherein, to decode the downlink communication, the apparatus is configured to decode the downlink communication according to the transport block size based at least in part on the first number of resource elements and the second number of resource elements.
12. The apparatus of claim 1 , wherein the apparatus is configured to receive, from a base station, an indication of the first reference signal configuration.
13. The apparatus of claim 1 , wherein the second reference signal configuration is a legacy reference signal configuration having a substantially uniform distribution, in frequency, of resource elements indicated for receiving the reference signal.
14. An apparatus for wireless communication, comprising:
a transceiver;
a memory; and
one or more processors coupled with the memory and the transceiver, wherein the apparatus is configured to:
determine, for a symbol used for full-duplex communication, at least two sets of resource blocks for one instance of a transmission of a reference signal, the at least two sets of resource blocks including a first reference signal configuration for a first set of resource blocks including a first number of resource elements and a second reference signal configuration for a second set of resource blocks including a second number of resource elements, wherein the first number of resource elements in accordance with the first reference signal configuration are different in at least one of uniformity or density, in frequency, than the second number of resource elements in accordance with the second reference signal configuration; and
transmit, to a user equipment (UE), the reference signal over the first set of resource blocks based on the first reference signal configuration and the second set of resource blocks based on the second reference signal configuration.
15. The apparatus of claim 14 , wherein the first reference signal configuration indicates at least the first number of resource elements.
16. The apparatus of claim 15 , wherein the first reference signal configuration indicates the first number of resource elements at least by indication of a first set of relative frequency locations within the first set of resource blocks.
17. The apparatus of claim 16 , wherein the first set of relative frequency locations indicates different relative frequency locations than a second set of relative frequency locations associated with the second reference signal configuration.
18. The apparatus of claim 16 , wherein the first set of relative frequency locations are more dense within the first set of resource blocks than a second set of relative frequency locations within the second set of resource blocks associated with the second reference signal configuration.
19. The apparatus of claim 16 , wherein the second reference signal configuration indicates at least the second number of resource elements, wherein the second reference signal configuration indicates the second number of reference signal resource elements at least by indication of a second set of relative frequency locations within the second set of resource blocks, wherein the first set of relative frequency locations are not uniform within the first set of resource blocks, and wherein the second set of relative frequency locations are uniform within the second set of resource blocks.
20. The apparatus of claim 16 , wherein the second reference signal configuration indicates at least the second number of resource elements, and wherein the first set of resource blocks are closer in frequency than the second set of resource blocks.
21. The apparatus of claim 14 , wherein the apparatus is configured to transmit, to the UE, a first indication of the first reference signal configuration.
22. The apparatus of claim 14 , wherein the second reference signal configuration is a legacy reference signal configuration having a substantially uniform distribution, in frequency, of resource elements indicated for transmitting the reference signal.
23. A method of wireless communication, comprising:
receiving, in a symbol used for full-duplex communication, at least two sets of resource blocks for one instance of a transmission of a reference signal, the at least two sets of resource blocks including a first set of resource blocks including a first number of resource elements corresponding to the reference signal and a second set of resource blocks including a second number of resource elements corresponding to the reference signal,
wherein the first number of resource elements correspond to a first reference signal configuration and the second number of resource elements correspond a second reference signal configuration, and
wherein the first number of resource elements in accordance with the first reference signal configuration are different in at least one of uniformity or density, in frequency, than the second number of resource elements in accordance with the second reference signal configuration; and
decoding, according to a transport block size that is based at least in part on at least the first number of resource elements, a downlink communication.
24. The method of claim 23 , further comprising:
calculating, based on the first reference signal configuration, the first number of resource elements in the first set of resource blocks; and
calculating, based on the second reference signal configuration, the second number of resource elements in the second set of resource blocks,
wherein decoding the downlink communication according to the transport block size is further based at least in part on the second number of resource elements.
25. The method of claim 23 , wherein the first reference signal configuration indicates at least the first number of resource elements.
26. The method of claim 25 , wherein the first reference signal configuration indicates the first number of resource elements at least by indication of a first set of relative frequency locations within the first set of resource blocks.
27. A method of wireless communication, comprising:
determining, for a symbol used for full-duplex communication, at least two sets of resource blocks for one instance of a transmission of a reference signal, the at least two sets of resource blocks including a first reference signal configuration for a first set of resource blocks including a first number of resource elements and a second reference signal configuration for a second set of resource blocks including a second number of resource elements, wherein the first number of resource elements in accordance with the first reference signal configuration are different in at least one of uniformity or density, in frequency, than the second number of resource elements in accordance with the second reference signal configuration; and
transmitting, to a user equipment (UE), the reference signal over the first set of resource blocks based on the first reference signal configuration and the second set of resource blocks based on the second reference signal configuration.