Autonomous uplink with analog beams
A base station may configure a set of autonomous uplink (AUL) resources for a specific base station receive beam, or the AUL resources may be configured for specific user equipment (UEs) or user groups. Additionally, the AUL resources may be configured to include a sensing portion, a data portion, or both. As an example, a UE may receive an AUL configuration that includes an indication of a set of AUL resources that are specific to a base station receive beam. The UE may then determine that the set of AUL resources is available and perform an AUL transmission of uplink data using the set of beam-specific AUL resources. Additionally or alternatively, the UE may perform the AUL transmission with respective portions that include a sensing signal and the uplink data. The base station may use the sensing signal to determine a receive beam on which to receive the uplink data.
1. A method for wireless communication at a user equipment (UE), comprising:
receiving, from a network entity, an autonomous uplink (AUL) configuration comprising an indication of a set of AUL resources for the UE;
identifying uplink data for an AUL transmission to the network entity; and
performing the AUL transmission using the set of AUL resources, wherein a first portion of the AUL transmission comprises a sensing signal including one or more reference signals, and wherein a second portion of the AUL transmission comprises the uplink data including one or more additional reference signals, wherein the AUL transmission is performed with the one or more reference signals, and wherein the first portion of the AUL transmission is time division multiplexed (TDM) with the second portion.
2. The method of claim 1 , wherein performing the AUL transmission comprises:
performing the AUL transmission with one or more repetitions of the uplink data on the set of AUL resources.
3. The method of claim 1 , wherein the one or more reference signals comprise a sounding reference signal (SRS), or a demodulation reference signal (DMRS), or a combination thereof.
4. The method of claim 1 , further comprising:
receiving, in response to the transmitted sensing signal, a trigger signal comprising a second indication that the set of AUL resources is available for AUL transmissions by the UE; and
performing the AUL transmission based at least in part on the received trigger signal.
5. The method of claim 4 , wherein the trigger signal comprises a sensing resource identifier, UE identify information, a beam identity, uplink resource allocation corresponding to a set of beams, a waveform to use for a physical uplink shared channel (PUSCH), or a combination thereof.
6. The method of claim 1 , wherein the sensing signal comprises an AUL indicator that includes transmission information including an indication of a priority of the uplink data, a waveform for a physical uplink shared channel (PUSCH), a modulation and coding scheme (MCS), a redundancy version (RV), a time/frequency resource allocation for a subsequent data transmission, UE identity information, transmit beam information, an indication of a receive beam to be used to receive the AUL transmission, or a combination thereof.
7. The method of claim 6 , wherein the transmission information is at least partially carried through a scrambling code associated with the AUL indicator, an orthogonal cover code associated with the AUL indicator, a cyclic shift associated with the AUL indicator, a frequency comb associated with the AUL indicator, or a combination thereof.
8. An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a network entity, an autonomous uplink (AUL) configuration comprising an indication of a set of AUL resources for the UE;
identify uplink data for an AUL transmission to the network entity; and
perform the AUL transmission using the set of AUL resources, wherein a first portion of the AUL transmission comprises a sensing signal including one or more reference signals, and wherein a second portion of the AUL transmission comprises the uplink data including one or more additional reference signals, wherein the AUL transmission is performed with the one or more reference signals, and wherein the first portion of the AUL transmission is time division multiplexed (TDM) with the second portion.
9. The apparatus of claim 8 , wherein the instructions to perform the AUL transmission are executable by the processor to cause the apparatus to:
perform the AUL transmission with one or more repetitions of the uplink data on the set of AUL resources.
10. The apparatus of claim 8 , wherein the one or more reference signals comprise a sounding reference signal (SRS), or a demodulation reference signal (DMRS), or a combination thereof.
11. The apparatus of claim 8 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, in response to the transmitted sensing signal, a trigger signal comprising a second indication that the set of AUL resources is available for AUL transmissions by the UE; and
perform the AUL transmission based at least in part on the received trigger signal.
12. The apparatus of claim 11 , wherein the trigger signal comprises a sensing resource identifier, UE identify information, a beam identity, uplink resource allocation corresponding to a set of beams, a waveform to use for a physical uplink shared channel (PUSCH), or a combination thereof.
13. The apparatus of claim 8 , wherein the sensing signal comprises an AUL indicator that includes transmission information including an indication of a priority of the uplink data, a waveform for a physical uplink shared channel (PUSCH), a modulation and coding scheme (MCS), a redundancy version (RV), a time/frequency resource allocation for a subsequent data transmission, UE identity information, transmit beam information, an indication of a receive beam to be used to receive the AUL transmission, or a combination thereof.
14. The apparatus of claim 13 , wherein the transmission information is at least partially carried through a scrambling code associated with the AUL indicator, an orthogonal cover code associated with the AUL indicator, a cyclic shift associated with the AUL indicator, a frequency comb associated with the AUL indicator, or a combination thereof.
15. An apparatus for wireless communication at a user equipment (UE), comprising:
means for receiving, from a network entity, an autonomous uplink (AUL) configuration comprising an indication of a set of AUL resources for the UE;
means for identifying uplink data for an AUL transmission to the network entity; and
means for performing the AUL transmission using the set of AUL resources, wherein a first portion of the AUL transmission comprises a sensing signal including one or more reference signals, and wherein a second portion of the AUL transmission comprises the uplink data including one or more additional reference signals, wherein the AUL transmission is performed with the one or more reference signals, and wherein the first portion of the AUL transmission is time division multiplexed (TDM) with the second portion.
16. The apparatus of claim 15 , wherein the means for performing the AUL transmission comprise:
means for performing the AUL transmission with one or more repetitions of the uplink data on the set of AUL resources.
17. The apparatus of claim 15 , wherein:
the one or more reference signals comprise a sounding reference signal (SRS), or a demodulation reference signal (DMRS), or a combination thereof.
18. The apparatus of claim 15 , further comprising:
means for receiving, in response to the transmitted sensing signal, a trigger signal comprising a second indication that the set of AUL resources is available for AUL transmissions by the UE; and
means for performing the AUL transmission based at least in part on the received trigger signal.
19. The apparatus of claim 18 , wherein the trigger signal comprises a sensing resource identifier, UE identify information, a beam identity, uplink resource allocation corresponding to a set of beams, a waveform to use for a physical uplink shared channel (PUSCH), or a combination thereof.
20. The apparatus of claim 15 , wherein the sensing signal comprises an AUL indicator that includes transmission information including an indication of a priority of the uplink data, a waveform for a physical uplink shared channel (PUSCH), a modulation and coding scheme (MCS), a redundancy version (RV), a time/frequency resource allocation for a subsequent data transmission, UE identity information, transmit beam information, an indication of a receive beam to be used to receive the AUL transmission, or a combination thereof.
21. The apparatus of claim 20 , wherein the transmission information is at least partially carried through a scrambling code associated with the AUL indicator, an orthogonal cover code associated with the AUL indicator, a cyclic shift associated with the AUL indicator, a frequency comb associated with the AUL indicator, or a combination thereof.
22. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to:
receive, from a network entity, an autonomous uplink (AUL) configuration comprising an indication of a set of AUL resources for the UE;
identify uplink data for an AUL transmission to the network entity; and
perform the AUL transmission using the set of AUL resources, wherein a first portion of the AUL transmission comprises a sensing signal including one or more reference signals, and wherein a second portion of the AUL transmission comprises the uplink data including one or more additional reference signals, wherein the AUL transmission is performed with the one or more reference signals, and wherein the first portion of the AUL transmission is time division multiplexed (TDM) with the second portion.
23. The non-transitory computer-readable medium of claim 22 , wherein the instructions to perform the AUL transmission are executable by the processor to:
perform the AUL transmission with one or more repetitions of the uplink data on the set of AUL resources.
24. The non-transitory computer-readable medium of claim 22 , wherein the instructions to perform the AUL transmission are executable by the processor to:
perform the AUL transmission with the one or more reference signals within the first portion of the AUL transmission, the sensing signal comprising the one or more reference signals.