Enhanced machine type communications physical uplink control channel design

1. A method for wireless communication, comprising:

receiving, at a user equipment (UE), a configuration message indicating a payload size configuration for machine type communication (MTC) physical uplink control channel (PUCCH) messages;

generating an MTC PUCCH message based at least in part on the payload size configuration and a PUCCH format of MTC uplink control information for transmission by the UE;

applying a sequence to different tones of a plurality of resource blocks (RBs) of the MTC PUCCH message, wherein the sequence is non-repeating in a frequency domain over the plurality of RBs; and

transmitting the MTC PUCCH message over the plurality of RBs in the frequency domain.

2. The method of claim 1 , further comprising:

identifying, based at least in part on the payload size configuration, a data symbol to use for modulating data bits in a computer generated sequence (CGS) of an RB of the plurality of RBs; and

modulating each CGS of the RB, wherein each CGS of the RB is modulated with a different data symbol.

3. The method of claim 1 , further comprising:

identifying, based at least in part on the payload size configuration, a data symbol to use for modulating data bits in a computer generated sequence (CGS) of an RB of the plurality of RBs; and

modulating each CGS of the RB, wherein each CGS of the RB is modulated with a same data symbol.

4. The method of claim 1 , further comprising:

repeating a reference signal in the plurality of RBs of the MTC PUCCH message.

5. The method of claim 1 , further comprising:

applying, for the UE, a same cyclic shift to each of the plurality of RBs of the MTC PUCCH message; and

applying, for the UE, a same cover code to different symbol periods in each of the plurality of RBs of the MTC PUCCH message.

6. A method for wireless communication, comprising:

selecting a payload size configuration for a machine type communication (MTC) physical uplink control channel (PUCCH) message from a user equipment (UE), the payload size configuration comprising a maximum amount of data available for the MTC PUCCH message;

transmitting a configuration message to the UE to indicate the payload size configuration;

receiving the MTC PUCCH message from the UE over a plurality of resource blocks (RBs); and

recovering each of the plurality of RBs of the MTC PUCCH message using a sequence applied to different tones of the plurality of RBs of the PUCCH message, wherein the sequence is non-repeating over the plurality of RBs.

7. The method of claim 6 , further comprising:

demodulating each CGS of the plurality of RBs of the MTC PUCCH message, wherein each CGS of the plurality of RBs is modulated with a different data symbol.

8. The method of claim 6 , further comprising:

demodulating each CGS of the plurality of RBs of the MTC PUCCH message, wherein each CGS of the plurality of RBs is modulated with a same data symbol.

9. The method of claim 6 , further comprising:

receiving a reference signal in the plurality of RBs of the MTC PUCCH message, wherein the reference signal is repeated in the plurality of RBs.

10. The method of claim 6 , further comprising:

reversing cyclically shifting, for the UE, each of the plurality of RBs of the MTC PUCCH message using a same cyclic shift code; and

recovering each of the plurality of RBs of the MTC PUCCH message using a same cover code.

11. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

receive, at a user equipment UE, a configuration message indicating a payload size configuration for machine type communication (MTC) physical uplink control channel (PUCCH) messages,

generate an MTC PUCCH message based at least in part on the payload size configuration and a PUCCH format of MTC uplink control information for transmission by the UE,

apply a sequence to different tones of a plurality of resource blocks (RBs) of the MTC PUCCH message, wherein the sequence is non-repeating in a frequency domain over the plurality of RBs, and

transmit the MTC PUCCH message over a plurality of RBs in Rail the frequency domain.

12. The apparatus of claim 11 , wherein the instructions are further executable by the processor to:

identify, based at least in part on the payload size configuration, a data symbol to use for modulating data bits in a computer generated sequence (CGS) of an RB of the plurality of RBs, and

modulate each CGS of the RB, wherein each CGS of the RB is modulated with a different data symbol.

13. The apparatus of claim 11 , wherein the instructions are further executable by the processor to:

identify, based at least in part on the payload size configuration, a data symbol to use for modulating data bits in a computer generated sequence (CGS) of an RB of the plurality of RBs, and

modulate each CGS of the RB, wherein each CGS of the RB is modulated with a same data symbol.

14. The apparatus of claim 11 , wherein the instructions are further executable by the processor to:

repeat a reference signal in the plurality of RBs of the MTC PUCCH message.

15. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to:

select a payload size configuration for a machine type communication (MTC) physical uplink control channel (PUCCH) message from a user equipment (UE), the payload size configuration comprising a maximum amount of data available for the MTC PUCCH message,

transmit a configuration message to the UE to indicate the payload size configuration,

receive the MTC PUCCH message from the UE over a plurality of resource blocks (RBs), and

recover each of the plurality of RBs of the MTC PUCCH message using a sequence applied to different tones of the plurality of RBs of the PUCCH message, wherein the sequence is non-repeating over the plurality of RBs.

16. The apparatus of claim 15 , wherein the instructions are further executable by the processor to:

demodulate each CGS of the plurality of RBs of the MTC PUCCH message, wherein each CGS of the plurality of RBs is modulated with a different data symbol.

17. The apparatus of claim 15 , wherein the instructions are further executable by the processor to:

demodulate each CGS of the plurality of RBs of the MTC PUCCH message, wherein each CGS of the plurality of RBs is modulated with a same data symbol.

18. The apparatus of claim 15 , wherein the instructions are further executable by the processor to:

receive a reference signal in the plurality of RBs of the MTC PUCCH message, wherein the reference signal is repeated in the plurality of RBs.