Carrier determination for a device

1. An apparatus, comprising:

a processor that:

determines a first carrier from a plurality of carriers; and

determines a set of physical resource blocks within the first carrier for a first device to transmit first hybrid automatic repeat request acknowledgement feedback information;

a transmitter that:

transmits, to the first device, first signaling indicating a first control channel for the first device to transmit the first hybrid automatic repeat request acknowledgement feedback information; and

transmits, to a second device, second signaling indicating a second control channel for the second device to transmit second hybrid automatic repeat request acknowledgement feedback information, wherein the first control channel and the second control channel are determined based at least in part on the set of physical resource blocks and the first carrier; and

a receiver that:

receives the first hybrid automatic repeat request acknowledgement feedback information from the first device on the first control channel; and

receives the second hybrid automatic repeat request acknowledgement feedback information from the second device on the second control channel, wherein the first control channel and the second control channel are received concurrently on the first carrier.

2. The apparatus of claim 1 , wherein the first signaling further indicates the first carrier to the first device.

3. The apparatus of claim 1 , wherein the first signaling further indicates an index for an orthogonal cover sequence to the first device, and the orthogonal cover sequence differentiates the first device from other devices in one slot.

4. The apparatus of claim 1 , wherein the first control channel is further determined at least in part by at least one physical resource block of the set of physical resource blocks and a first index for a first orthogonal cover sequence.

5. The apparatus of claim 4 , wherein the second control channel is further determined at least in part by at least one physical resource block of the set of physical resource blocks and a second index for a second orthogonal cover sequence, and the first orthogonal cover sequence and the second orthogonal cover sequence are used to differentiate the first device and the second device in one slot.

6. The apparatus of claim 1 , wherein:

the processor determines a first time for the first device to transmit the first hybrid automatic repeat request acknowledgement feedback information;

the transmitter transmits, to the first device, a first indicator indicating a first time offset between a first downlink transmission for the first device and the first time; and

the receiver receives, from the first device, the first hybrid automatic repeat request acknowledgement feedback information based on the first time.

7. The apparatus of claim 6 , wherein:

the transmitter transmits, to the second device, a second indicator indicating a second time offset between a second downlink transmission for the second device and the first time; and

the receiver receives, from the second device, the second hybrid automatic repeat request acknowledgement feedback information based on the first time.

8. The apparatus of claim 1 , wherein the first signaling indicates an offset between an end of a downlink transmission burst and a start of an uplink transmission burst.

9. The apparatus of claim 1 , wherein:

the processor determines a random backoff counter for the first device; and

the transmitter transmits, to the first device, a first indicator indicating the random backoff counter.

10. The apparatus of claim 9 , wherein the transmitter transmits, to the second device, a second indicator indicating the random backoff counter.

11. A method comprising:

determining a first carrier from a plurality of carriers;

determining a set of physical resource blocks within the first carrier for a first device to transmit first hybrid automatic repeat request acknowledgement feedback information;

transmitting, to the first device, first signaling indicating a first control channel for the first device to transmit the first hybrid automatic repeat request acknowledgement feedback information;

transmitting, to a second device, second signaling indicating a second control channel for the second device to transmit second hybrid automatic repeat request acknowledgement feedback information, wherein the first control channel and the second control channel are determined based at least in part on the set of physical resource blocks and the first carrier;

receiving the first hybrid automatic repeat request acknowledgement feedback information from the first device on the first control channel; and

receiving the second hybrid automatic repeat request acknowledgement feedback information from the second device on the second control channel, wherein the first control channel and the second control channel are received concurrently on the first carrier.

12. The method of claim 11 , wherein the first signaling further indicates the first carrier to the first device.

13. The method of claim 11 , wherein the first signaling further indicates an index for an orthogonal cover sequence to the first device, and the orthogonal cover sequence differentiates the first device from other devices in one slot.

14. The method of claim 11 , wherein the first control channel is further determined at least in part by at least one physical resource block of the set of physical resource blocks and a first index for a first orthogonal cover sequence.

15. The method of claim 14 , wherein the second control channel is further determined at least in part by at least one physical resource block of the set of physical resource blocks and a second index for a second orthogonal cover sequence, and the first orthogonal cover sequence and the second orthogonal cover sequence are used to differentiate the first device and the second device in one slot.

16. The method of claim 11 , further comprising:

determining a first time for the first device to transmit the first hybrid automatic repeat request acknowledgement feedback information;

transmitting, to the first device, a first indicator indicating a first time offset between a first downlink transmission for the first device and the first time; and

receiving, from the first device, the first hybrid automatic repeat request acknowledgement feedback information based on the first time.

17. The method of claim 16 , further comprising:

transmitting, to the second device, a second indicator indicating a second time offset between a second downlink transmission for the second device and the first time; and

receiving, from the second device, the second hybrid automatic repeat request acknowledgement feedback information based on the first time.

18. The method of claim 11 , wherein the first signaling indicates an offset between an end of a downlink transmission burst and a start of an uplink transmission burst.

19. The method of claim 11 , further comprising:

determining a random backoff counter for the first device; and

transmitting, to the first device, a first indicator indicating the random backoff counter.

20. The method of claim 19 , further comprising transmitting, to the second device, a second indicator indicating the random backoff counter.

21. An apparatus comprising:

a receiver that receives signaling indicating a control channel for transmitting first hybrid automatic repeat request acknowledgement feedback information, wherein the control channel comprises a carrier of a plurality of carriers and a set of physical resource blocks within the carrier; and

a transmitter that transmits the first hybrid automatic repeat request acknowledgement feedback information on the control channel to a network device, wherein the network device is to receive second hybrid automatic repeat request acknowledgement feedback information from a second device on the carrier concurrently with receiving the first hybrid automatic repeat request acknowledgement feedback information.

22. The apparatus of claim 21 , wherein the signaling further indicates an index of the carrier.

23. The apparatus of claim 21 , wherein the signaling further indicates an index for an orthogonal cover sequence, and the orthogonal cover sequence differentiates the apparatus from other apparatuses in one slot.

24. The apparatus of claim 21 , wherein the control channel further comprises at least one physical resource block of the set of physical resource blocks and an index for an orthogonal cover sequence, and the orthogonal cover sequence differentiates the apparatus from other apparatuses in one slot.

25. The apparatus of claim 21 , wherein:

the receiver receives a first indicator indicating a time offset between a downlink transmission and a time for transmitting the first hybrid automatic repeat request acknowledgement feedback information; and

the transmitter transmits the first hybrid automatic repeat request acknowledgement feedback information based on the time.

26. The apparatus of claim 21 , wherein the signaling indicates a time offset between an end of a downlink transmission burst and a start of an uplink transmission burst.

27. The apparatus of claim 21 , further comprising a processor, wherein:

the receiver receives a second indicator indicating a random backoff counter; and

the processor performs listen-before-talk using the random backoff counter on the carrier.

28. A method comprising:

receiving signaling indicating a control channel for transmitting first hybrid automatic repeat request acknowledgement feedback information, wherein the control channel comprises a carrier of a plurality of carriers and a set of physical resource blocks within the carrier; and

transmitting the first hybrid automatic repeat request acknowledgement feedback information on the control channel to a network device, wherein the network device is to receive second hybrid automatic repeat request acknowledgement feedback information from a second device on the carrier concurrently with receiving the first hybrid automatic repeat request acknowledgement feedback information.

29. The method of claim 28 , wherein the signaling further indicates an index of the carrier.

30. The method of claim 28 , wherein the signaling further indicates an index for an orthogonal cover sequence, and the orthogonal cover sequence differentiates the one device from other devices in one slot.

31. The method of claim 28 , wherein the control channel further comprises at least one physical resource block of the set of physical resource blocks and an index for an orthogonal cover sequence, and the orthogonal cover sequence differentiates one device from other devices in one slot.

32. The method of claim 28 , further comprising:

receiving a first indicator indicating a time offset between a downlink transmission and a time for transmitting the first hybrid automatic repeat request acknowledgement feedback information; and

transmitting the first hybrid automatic repeat request acknowledgement feedback information based on the time.

33. The method of claim 28 , wherein the signaling indicates a time offset between an end of a downlink transmission burst and a start of an uplink transmission burst.

34. The method of claim 28 , further comprising:

receiving a second indicator indicating a random backoff counter; and

performing listen-before-talk using the random backoff counter on the carrier.