Multiplexing signals with scalable numerology for new radio (NR) networks
Wireless communication devices are adapted to facilitate multiplexing of signals. According to one example, a wireless communication device can multiplex a first signal and a second signal for transmission across a first resource element and a second resource element. The first resource element may utilize a first subcarrier in a first symbol employing a first numerology. The second resource element may utilize a second subcarrier in a second symbol employing a second numerology that is different from the first numerology, where the second subcarrier overlaps in frequency at least a portion of the first subcarrier. The first and second symbols including the multiplexed first and second signals may subsequently be transmitted. Other aspects, embodiments, and features are also included.
1. A wireless communication device, comprising:
a transceiver;
a memory; and
a processor communicatively coupled to the transceiver and the memory, the processor configured to:
multiplex a first signal and at least a second signal for transmission across at least two resource elements (REs) comprising
a first RE that utilizes a first subcarrier in a first symbol employing a first numerology, and
a second RE that utilizes a second subcarrier in a second symbol employing a second numerology different from the first numerology, wherein the second subcarrier overlaps in frequency at least a portion of the first subcarrier; and
initiate transmission of the first and second symbols via the transceiver.
2. The wireless communication device of claim 1 , wherein the first signal is multiplexed with at least the second signal utilizing an orthogonal cover code or a discrete Fourier transform.
3. The wireless communication device of claim 1 , wherein the first signal comprises a reference signal, and wherein the second signal comprises a reference signal.
4. The wireless communication device of claim 1 , wherein the processor is further configured to:
initiate transmission on a third resource element in the first symbol one of a data symbol, a reference signal, or control information.
5. The wireless communication device of claim 1 , wherein the first symbol and the second symbol each comprises an orthogonal frequency division multiplexed (OFDM) symbol.
6. The wireless communication device of claim 1 , wherein the first signal is associated with a first antenna port and the second signal is associated with a second antenna port.
7. The wireless communication device of claim 1 , wherein the first subcarrier is centered at a same frequency as a center of the second subcarrier, and wherein the first symbol and the second symbol employ different symbol durations.
8. The wireless communication device of claim 1 , wherein the second numerology is scaled from the first numerology, or the first numerology is scaled from the second numerology.
9. A method operational on a wireless communication device, comprising:
multiplexing a first signal and at least a second signal for transmission across at least two resource elements comprising
a first resource element utilizing a first subcarrier in a first symbol employing a first numerology, and
a second resource element utilizing a second subcarrier in a second symbol employing a second numerology that is different from the first numerology, wherein the second subcarrier overlaps in frequency at least a portion of the first subcarrier; and
transmitting the first symbol and the second symbol.
10. The method of claim 9 , wherein multiplexing the first signal and at least the second signal comprises:
multiplexing the first signal and at least the second signal utilizing an orthogonal cover code or a discrete Fourier transform.
11. The method of claim 9 , wherein multiplexing the first signal and at least the second signal comprises:
multiplexing a first reference signal and at least a second reference signal.
12. The method of claim 11 , wherein at least one of the first reference signal or the second reference signal comprises a reference signal selected from a group of reference signals comprising a demodulation reference signal, a CSI reference signal, and a phase compensation pilot.
13. The method of claim 9 , wherein:
the first resource element utilizing the first subcarrier in the first symbol comprises the first resource element utilizing the first subcarrier in a first orthogonal frequency division multiplexed (OFDM) symbol; and
the second resource element utilizing the second subcarrier in the second symbol comprises the second resource element utilizing the second subcarrier in a second OFDM symbol.
14. The method of claim 9 , wherein the first signal is associated with a first antenna port and the second signal is associated with a second antenna port.
15. The method of claim 9 , wherein a frequency center for the first subcarrier is substantially the same as a frequency center for the second subcarrier.
16. The method of claim 9 , further comprising:
transmitting on a third resource element in the first symbol one of a data symbol, a reference signal, or control information.
17. A wireless communication device, comprising:
means for multiplexing a first signal and at least a second signal for transmission across at least two resource elements comprising
a first resource element utilizing a first subcarrier in a first symbol employing a first numerology, and
a second resource element utilizing a second subcarrier in a second symbol employing a second numerology that is different from the first numerology, wherein the second subcarrier overlaps in frequency at least a portion of the first subcarrier; and
means for transmitting the first symbol and the second symbol.
18. The wireless communication device of claim 17 , wherein multiplexing the first signal and at least the second signal comprises:
multiplexing the first signal and at least the second signal utilizing an orthogonal cover code or a discrete Fourier transform.
19. The wireless communication device of claim 18 , wherein:
multiplexing the first signal and at least the second signal comprises multiplexing the first signal and at least the second signal utilizing a discrete Fourier transform; and
a respective code division multiplexing weight employed for multiplexing the first signal and the second signal utilizing the discrete Fourier transform is dependent on a duration of the first symbol and a duration of the second symbol.
20. The wireless communication device of claim 17 , wherein multiplexing the first signal and at least the second signal comprises:
multiplexing a first reference signal and at least a second reference signal.
21. The wireless communication device of claim 17 , wherein the first symbol and the second symbol each comprises an orthogonal frequency division multiplexed (OFDM) symbol.
22. The wireless communication device of claim 17 , wherein the first signal is associated with a first antenna port and the second signal is associated with a second antenna port.
23. The wireless communication device of claim 17 , wherein the first subcarrier is centered at a same frequency as a center of the second subcarrier.
24. A non-transitory processor-readable storage medium storing processor-executable programming for causing a processing circuit to:
multiplex a first signal and at least a second signal for transmission across at least two resource elements (REs) comprising
a first RE that utilizes a first subcarrier in a first symbol employing a first numerology, and
a second RE that utilizes a second subcarrier in a second symbol employing a second numerology that is different from the first numerology, wherein the second subcarrier overlaps in frequency at least a portion of the first subcarrier; and
initiate transmission of the first symbol and the second symbol.
25. The processor-readable storage medium of claim 24 , wherein the first signal is multiplexed with at least the second signal utilizing an orthogonal cover code or a discrete Fourier transform.
26. The processor-readable storage medium of claim 24 , wherein the first signal comprises a first reference signal, and wherein the second signal comprises a second reference signal.
27. The processor-readable storage medium of claim 24 , wherein the first signal is associated with a first antenna port and the second signal is associated with a second antenna port.
28. The processor-readable storage medium of claim 24 , wherein a frequency center for a first subcarrier utilized by the first RE in the first symbol is substantially the same as a frequency center for a second subcarrier utilized by the second RE in the second symbol.
29. The processor-readable storage medium of claim 24 , further comprising processor-executable programming for causing a processing circuit to:
initiate transmission on a third RE associated with the first symbol one of a data symbol, a reference signal, or control information.
30. The processor-readable storage medium of claim 24 , wherein the first symbol and the second symbol each comprises an orthogonal frequency division multiplexed (OFDM) symbol.