Mixed waveform communications
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an indication of a set of frequency domain resources allocated to the UE for communicating data over a wireless channel. The UE may receive an indication of a waveform type associated with the set of frequency domain resources. The waveform type may be based at least in part on a data type of the data, may be used for a defined amount of time, and may be one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth. The UE may communicate within the set of frequency domain resources according to the indicated waveform type and the data type.
1 . An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, wherein the instructions are executable by the processor to:
receive an indication of a set of frequency domain resources allocated to the UE for communicating data over a wireless channel;
receive an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is to be used for a defined amount of time and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth, wherein the waveform type comprises a direct sequence waveform type and the set of frequency domain resources comprises multiple contiguous subbands of the total system bandwidth;
receive scheduling information associated with the direct sequence waveform type comprising a center frequency, a chip rate, a spreading factor, a data rate, or any combination thereof; and
communicate within the set of frequency domain resources according to the direct sequence waveform type and the scheduling information.
2 . The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to:
process a cyclic prefix associated with the direct sequence waveform type.
3 . The apparatus of claim 1 , wherein receiving the indication of the waveform type is based at least in part on a peak to average power ratio metric associated with the UE.
4 . An apparatus for wireless communication at a user equipment (UE), comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, wherein the instructions are executable by the processor to:
receive an indication of a set of frequency domain resources allocated to the UE for communicating data over a wireless channel;
receive an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is based at least in part on a data type of the data, is to be used for a defined amount of time, and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth;
communicate within the set of frequency domain resources according to the indicated waveform type and the data type;
wherein the plurality of waveform types that are multiplexed together over different frequency domain resources within the total system bandwidth comprises a combination of one or more frequency domain processing-based waveforms and one or more time domain processing-based waveforms; and
wherein:
the one or more frequency domain processing-based waveforms comprise one or more of a contiguous Fourier spread waveform, an orthogonal frequency domain multiple access waveform, a frequency modulated continuous wave waveform, or any combination thereof;
the one or more time domain processing-based waveforms comprise one or more of a direct sequence waveform, a resource spread multiple access waveform, an up-sampling waveform, a distributed Fourier spread waveform, a constant envelope waveform, or any combination thereof; or
the one or more time domain processing-based waveforms occupy frequency domain resources located at an edge of the total system bandwidth.
5 . An apparatus for wireless communication at a network entity, comprising:
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, wherein the instructions are executable by the processor to:
transmit an indication of a set of frequency domain resources allocated to a user equipment (UE) for communicating data over a wireless channel;
transmit an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is to be used for a defined amount of time and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth, wherein the waveform type comprises a direct sequence waveform type and the set of frequency domain resources comprises multiple contiguous subbands of the total system bandwidth;
transmit scheduling information associated with the direct sequence waveform type comprising a center frequency, a chip rate, a spreading factor, a data rate, or any combination thereof; and
communicate within the set of frequency domain resources according to the direct sequence waveform type and the scheduling information.
6 . The apparatus of claim 5 , wherein the instructions are further executable by the processor to cause the apparatus to process a cyclic prefix associated with the direct sequence waveform type.
7 . The apparatus of claim 5 , wherein transmitting the indication of the waveform type is based at least in part on a peak to average power ratio metric associated with the UE.
8 . An apparatus for wireless communication at a network entity, comprising:
a processor:
memory in electronic communication with the processor; and
instructions stored in the memory, wherein the instructions are executable by the processor to:
transmit an indication of a set of frequency domain resources allocated to a user equipment (UE) for communicating data over a wireless channel;
transmit an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is based at least in part on a data type of the data, is to be used for a defined amount of time, and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth;
communicate within the set of frequency domain resources according to the indicated waveform type and the data type;
wherein the plurality of waveform types that are multiplexed together over different frequency domain resources within the total system bandwidth comprises a combination of one or more frequency domain processing-based waveforms and one or more time domain processing-based waveforms; and
wherein:
the one or more frequency domain processing-based waveforms comprise one or more of a contiguous Fourier spread waveform, an orthogonal frequency domain multiple access waveform, a frequency modulated continuous wave waveform, or any combination thereof;
the one or more time domain processing-based waveforms comprise one or more of a direct sequence waveform, a resource spread multiple access waveform, an up-sampling waveform, a distributed Fourier spread waveform, a constant envelope waveform, or any combination thereof; or
the one or more time domain processing-based waveforms occupy frequency domain resources located at an edge of the total system bandwidth.
9 . A method for wireless communication at a network entity, comprising:
transmitting an indication of a set of frequency domain resources allocated to a user equipment (UE) for communicating data over a wireless channel;
transmitting an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is to be used for a defined amount of time and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth, wherein the waveform type comprises a direct sequence waveform type and the set of frequency domain resources comprises multiple contiguous subbands of the total system bandwidth;
transmitting scheduling information associated with the direct sequence waveform type comprising a center frequency, a chip rate, a spreading factor, a data rate, or any combination thereof; and
communicating within the set of frequency domain resources according to the direct sequence waveform type and the scheduling information.
10 . A method for wireless communication at a user equipment (UE), comprising:
receiving an indication of a set of frequency domain resources allocated to the UE for communicating data over a wireless channel;
receiving an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is based at least in part on a data type of the data, is to be used for a defined amount of time, and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth;
communicating within the set of frequency domain resources according to the indicated waveform type and the data type;
wherein the plurality of waveform types that are multiplexed together over different frequency domain resources within the total system bandwidth comprises a combination of one or more frequency domain processing-based waveforms and one or more time domain processing-based waveforms; and
wherein:
the one or more frequency domain processing-based waveforms comprise one or more of a contiguous Fourier spread waveform, an orthogonal frequency domain multiple access waveform, a frequency modulated continuous wave waveform, or any combination thereof;
the one or more time domain processing-based waveforms comprise one or more of a direct sequence waveform, a resource spread multiple access waveform, an up-sampling waveform, a distributed Fourier spread waveform, a constant envelope waveform, or any combination thereof; or
the one or more time domain processing-based waveforms occupy frequency domain resources located at an edge of the total system bandwidth.
11 . The method of claim 9 , further comprising:
processing a cyclic prefix associated with the direct sequence waveform type.
12 . The method of claim 11 , further comprising processing a cyclic prefix associated with the direct sequence waveform type.
13 . A method for wireless communication at a network entity, comprising:
transmitting an indication of a set of frequency domain resources allocated to a user equipment (UE) for communicating data over a wireless channel;
transmitting an indication of a waveform type associated with the set of frequency domain resources, wherein the waveform type is based at least in part on a data type of the data, is to be used for a defined amount of time, and is one of a plurality of waveform types that are multiplexed together over different frequency domain resources within a total system bandwidth; and
communicating within the set of frequency domain resources according to the indicated waveform type and the data type;
wherein the plurality of waveform types that are multiplexed together over different frequency domain resources within the total system bandwidth comprises a combination of one or more frequency domain processing-based waveforms and one or more time domain processing-based waveforms; and
wherein:
the one or more frequency domain processing-based waveforms comprise one or more of a contiguous Fourier spread waveform, an orthogonal frequency domain multiple access waveform, a frequency modulated continuous wave waveform, or any combination thereof;
the one or more time domain processing-based waveforms comprise one or more of a direct sequence waveform, a resource spread multiple access waveform, an up-sampling waveform, a distributed Fourier spread waveform, a constant envelope waveform, or any combination thereof; or
the one or more time domain processing-based waveforms occupy frequency domain resources located at an edge of the total system bandwidth.