Spatial diversity for data transmissions using multiple beams
An apparatus may determine a beam configuration for a data transmission that includes at least one code block in a first resource block. In certain aspects, the at least one code block may include a first set of bits and a second set of bits. In certain aspects, the beam configuration may include a first beam in a first beam direction that may be used to communicate the first set of bits of the at least one code block in a first set of symbols of the first resource block and a second beam in a second beam direction that is used to communicate the second set of bits of the at least one code block in the second set of symbols of the first resource block. The apparatus may transmit signaling that indicates the beam configuration for the data transmission in the first resource block to a UE.
1. A method of wireless communication of a base station, comprising:
determining a beam configuration for a data transmission, the beam configuration including a first beam associated with a first beam direction and a second beam associated with a second beam direction;
transmitting signaling that indicates the beam configuration for the data transmission to a user equipment (UE); and
transmitting or receiving a first set of bits of the data transmission via the first beam and a second set of bits of the data transmission via the second beam based on the beam configuration, the data transmission including at least one code block in a resource block (RB), wherein the at least one code block includes the first set of bits in a first set of symbols of the RB and the second set of bits in a second set of symbols of the RB, the second set of bits comprising redundancy information associated with the first set of bits, and the first set of symbols being different from the second set of symbols.
2. The method of claim 1 , wherein the signaling indicates a switch in the RB between the first set of symbols including the first set of bits of the at least one code block and the second set of symbols including the second set of bits of the at least one code block.
3. The method of claim 1 , wherein:
the signaling includes one or more of downlink control information (DCI) signaling, medium access control (MAC) control element (CE) (MAC-CE) signaling or radio resource control (RRC) signaling,
the RRC signaling indicates a beam table for a plurality of beam switch patterns, and
the DCI signaling or MAC-CE signaling down selects one of the plurality of beam switch patterns.
4. The method of claim 1 , wherein:
the data transmission includes at least one first reference signal communicated via the first beam in the first set of symbols of the RB, and
the data transmission includes at least one second reference signal communicated via the second beam in the second set of symbols of the RB.
5. The method of claim 4 , wherein:
the at least one first reference signal includes one or more of a first set of demodulation reference signals (DMRSs) or a first set of phase tracking reference signals (PTRSs), and
the at least one second reference signal includes one or more of a second set of DMRSs or a second set of PTRSs.
6. The method of claim 1 , further comprising:
determining a first modulation and coding scheme (MCS) for the first beam based at least in part on a channel measurement and a second MCS for the second beam based at least in part on the channel measurement.
7. The method of claim 6 , further comprising:
performing the channel measurement for each of a plurality of beams, the beam configuration being determined based at least in part on the channel measurement for each of the plurality of beams.
8. The method of claim 7 , wherein the signaling includes an indication of the first MCS for the first beam and the second MCS for the second beam.
9. The method of claim 1 , wherein the first set of bits and the second set of bits of the at least one code block are encoded with a same channel code.
10. The method of claim 1 , wherein the at least one code block comprises a code block group.
11. The method of claim 1 , wherein the first set of symbols is time-division multiplexed with the second set of symbols.
12. A method of wireless communication of a user equipment (UE), comprising:
receiving, from a base station, signaling that indicates a beam configuration for a data transmission, the beam configuration including a first beam associated with a first beam direction and a second beam associated with a second beam direction; and
receiving or transmitting a first set of bits of the data transmission via the first beam and a second set of bits of the data transmission via the second beam based on the beam configuration, the data transmission including at least one code block in a resource block (RB), wherein the at least one code block includes the first set of bits in a first set of symbols of the RB and the second set of bits in a second set of symbols of the RB, the second set of bits comprising redundancy information associated with the first set of bits, and the first set of symbols being different from the second set of symbols.
13. The method of claim 12 , wherein the signaling indicates a switch in the RB between the first set of symbols including the first set of bits of the at least one code block and the second set of symbols including the second set of bits of the at least one code block.
14. The method of claim 12 , wherein:
the signaling includes one or more of downlink control information (DCI) signaling, medium access control (MAC) control element (CE) (MAC-CE) signaling or radio resource control (RRC) signaling,
the RRC signaling indicates a beam table for a plurality of beam switch patterns, and
the DCI signaling or MAC-CE signaling down selects one of the plurality of beam switch patterns.
15. The method of claim 12 , wherein:
the data transmission includes at least one first reference signal communicated via the first beam in the first set of symbols of the RB, and
the data transmission includes at least one second reference signal communicated via the second beam in the second set of symbols of the RB.
16. The method of claim 15 , wherein:
the at least one first reference signal includes one or more of a first set of demodulation reference signals (DMRSs) or a first set of phase tracking reference signals (PTRSs), and
the at least one second reference signal includes one or more of a second set of DMRSs or a second set of PTRSs.
17. The method of claim 12 , wherein the signaling includes an indication of a first modulation and coding scheme (MCS) for the first beam and a second MCS for the second beam.
18. The method of claim 12 , wherein the first set of bits and the second set of bits of the at least one code block are encoded with a same channel code.
19. The method of claim 12 , wherein the at least one code block comprises a code block group.
20. An apparatus for wireless communication of a base station, comprising:
at least one processor; and
a memory coupled to the at least one processor and configured to:
determine a beam configuration for a data transmission, the beam configuration including a first beam associated with a first beam direction and a second beam associated with a second beam direction;
transmit signaling that indicates the beam configuration for the data transmission to a user equipment (UE); and
transmit or receive a first set of bits the data transmission via the first beam and a second set of bits of the data transmission via the second beam based on the beam configuration, the data transmission including at least one code block in a resource block (RB), wherein the at least one code block includes the first set of bits in a first set of symbols of the RB and the second set of bits in a second set of symbols of the RB, the second set of bits comprising redundancy information associated with the first set of bits, and the first set of symbols being different from the second set of symbols.
21. The apparatus of claim 20 , wherein the signaling indicates a switch in the RB between the first set of symbols including the first set of bits of the at least one code block and the second set of symbols including the second set of bits of the at least one code block.
22. The apparatus of claim 20 , wherein:
the signaling includes one or more of downlink control information (DCI) signaling, medium access control (MAC) control element (CE) (MAC-CE) signaling or radio resource control (RRC) signaling,
the RRC signaling indicates a beam table for a plurality of beam switch patterns, and
the DCI signaling or MAC-CE signaling down selects one of the plurality of beam switch patterns.
23. The apparatus of claim 20 , wherein:
the data transmission includes at least one first reference signal communicated via the first beam in the first set of symbols of the RB, and
the data transmission includes at least one second reference signal communicated via the second beam in the second set of symbols of the RB.
24. An apparatus for wireless communication of a user equipment (UE), comprising:
at least one processor; and
a memory coupled to the at least one processor and configured to:
receive, from a base station, signaling that indicates a beam configuration for a data transmission, the beam configuration including a first beam associated with a first beam direction and a second beam associated with a second beam direction; and
receive or transmit a first set of bits of the data transmission via the first beam and a second set of bits of the data transmission via the second beam based on the beam configuration, the data transmission including at least one code block in a resource block (RB), wherein the at least one code block includes the first set of bits in a first set of symbols of the RB and the second set of bits in a second set of symbols of the RB, the second set of bits comprising redundancy information associated with the first set of bits, and the first set of symbols being different from the second set of symbols.
25. The apparatus of claim 24 , wherein the signaling indicates a switch in the RB between the first set of symbols including the first set of bits of the at least one code block and the second set of symbols including the second set of bits of the at least one code block.
26. The apparatus of claim 24 , wherein:
the signaling includes one or more of downlink control information (DCI) signaling, medium access control (MAC) control element (CE) (MAC-CE) signaling or radio resource control (RRC) signaling,
the RRC signaling indicates a beam table for a plurality of beam switch patterns, and
the DCI signaling or MAC-CE signaling down selects one of the plurality of beam switch patterns.
27. The apparatus of claim 24 , wherein:
the data transmission includes at least one first reference signal communicated via the first beam in the first set of symbols of the RB, and
the data transmission includes at least one second reference signal communicated via the second beam in the second set of symbols of the RB.