System and methods for support of frequency hopping for UES with reduced bandwidth support

Inventors: Gang Xiong (Beaverton, OR); Debdeep Chatterjee (Santa Clara, CA); Seunghee Han (Cupertino, CA)

Assignee: Apple Inc.

H04L5/0053 H04B1/713 H04L1/08 H04L5/0012 H04B2201/698 H04L1/00 H04L1/1671 H04L5/0094

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Quick Facts

Patent No.: US 11,848,884
App. No.: 16/725,017
Granted: Dec 19, 2023
Kind: B2

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Abstract

This application relates to enhanced coverage communication using a physical uplink control channel (PUCCH). PUCCH puncturing may be performed in relation to frequency hopping.

Claims (39)

1. A User equipment device (UE) comprising:

a transceiver configured to transmit signals to a base station; and

a processor operably coupled to the transceiver and configured to cause the UE to:

operate in an enhanced coverage (EC) mode;

determine a physical uplink control channel (PUCCH) resource allocation; and

transmit the PUCCH according to the PUCCH resource allocation, wherein:

the PUCCH resource allocation includes inter-subframe frequency hopping between physical resource blocks between sets of N subframes, wherein the PUCCH resource allocation including inter-subframe frequency hopping uses frequency resources of the same one physical resource block in both slots of a subframe, wherein a value of N is configured by the base station with N greater than or equal to 1, wherein the PUCCH resource allocation includes a number of configured PUCCH repetitions, and

when the inter-subframe frequency hopping is enabled, said transmitting the PUCCH includes puncturing a first symbol of a first slot of a first subframe at a frequency hopping boundary or puncturing a last symbol of a second slot of a second subframe at the frequency hopping boundary.

2. The UE of claim 1 , wherein a frequency hopping pattern is cell-specific.

3. The UE of claim 1 , wherein the PUCCH is a shortened PUCCH.

4. The UE of claim 1 , wherein the processor is further configured to cause the UE to perform frequency hopping for a physical uplink shared channel (PUSCH) transmission.

5. The UE of claim 1 , wherein the PUCCH resource allocation is symmetric around a center frequency of an uplink system bandwidth.

6. The UE of claim 1 , wherein the UE is a machine-type communication (MTC) UE configured to refrain from transmitting physical uplink shared channel (PUSCH) on a last symbol of a first subframe.

7. The UE of claim 1 , wherein the PUCCH corresponds to PUCCH format 1a or 1b.

8. The UE of claim 1 , wherein, when said inter-subframe frequency hopping is enabled, said transmitting the PUCCH further includes puncturing the first symbol of the first slot of the first subframe and puncturing the last symbol of the second slot of the second subframe at the frequency hopping boundary.

9. An apparatus for operating a user equipment device (UE), the apparatus comprising:

a processor configured to cause the UE to:

operate in an enhanced coverage (EC) mode;

determine a physical uplink control channel (PUCCH) resource allocation; and

transmit the PUCCH according to the PUCCH resource allocation, wherein:

the PUCCH resource allocation includes inter-subframe frequency hopping between physical resource blocks between sets of N subframes, wherein the PUCCH resource allocation including inter-subframe frequency hopping uses frequency resources of the same one physical resource block in both slots of a subframe, wherein a value of N is configured by a base station with N greater than or equal to 1, wherein the PUCCH resource allocation includes a number of configured PUCCH repetitions, and

10. The apparatus of claim 9 , wherein a frequency hopping pattern is cell-specific.

11. The apparatus of claim 9 , wherein the PUCCH is a shortened PUCCH.

12. The apparatus of claim 9 , wherein the processor is further configured to cause the UE to perform frequency hopping for a physical uplink shared channel (PUSCH) transmission.

13. The apparatus of claim 9 , wherein the PUCCH resource allocation is symmetric around a center frequency of an uplink system bandwidth.

14. The apparatus of claim 9 , wherein the UE is a machine-type communication (MTC) UE configured to refrain from transmitting physical uplink shared channel (PUSCH) on a last symbol of a first subframe.

15. The apparatus of claim 9 , wherein the PUCCH corresponds to PUCCH format 1a or 1b.

16. The apparatus of claim 9 , wherein, when said inter-subframe frequency hopping is enabled, said transmitting the PUCCH further includes puncturing the first symbol of the first slot of the first subframe and puncturing the last symbol of the second slot of the second subframe at the frequency hopping boundary.

17. A method for operating a user equipment device (UE), the method comprising:

at the UE:

operating in an enhanced coverage (EC) mode;

determining a physical uplink control channel (PUCCH) resource allocation; and

transmitting the PUCCH according to the PUCCH resource allocation, wherein:

the PUCCH resource allocation includes inter-subframe frequency hopping between physical resource blocks between sets of N subframes, wherein the PUCCH resource allocation including inter-subframe frequency hopping uses frequency resources of the same one physical resource block in both slots of a subframe, wherein a value of N is configured by a base station with N greater than or equal to 1, wherein the PUCCH resource allocation includes a number of configured PUCCH repetitions, and

18. The method of claim 17 , wherein a frequency hopping pattern is cell-specific.

19. The method of claim 17 , wherein the PUCCH is a shortened PUCCH.

20. The method of claim 17 , wherein, when said inter-subframe frequency hopping is enabled, said transmitting the PUCCH further includes puncturing the first symbol of the first slot of the first subframe and puncturing the last symbol of the second slot of the second subframe at the frequency hopping boundary.