Wireless communication between wideband ENB and narrowband UE

• US 10,542,543 B2
• Filed: 06/27/2017
• Issued: 01/21/2020
• Est. Priority Date: 11/02/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Yerramalli, Srinivas, Kadous, Tamer, Liu, Chih-Hao, Patel, Chirag, Rico Alvarino, Alberto
• Primary Examiner(s): Roudani, Oussama
• Application Number:
  US15/635,018
• Publication Number:
  US 20180124776A1
• Time in Patent Office: 938 Days
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 1/12 by using return channel
• CPC Class Codes: H04L 1/189 Transmission or retransmission of more than one copy of a message
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 74/0808 using carrier sensing, e.g. carrier sense multiple access [CSMA]
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

A method and apparatus for wireless communication in the unlicensed spectrum between an eNB and UEs having different bandwidths, e.g., between a narrowband UE and a wideband eNB. A user equipment apparatus segments an uplink duration in each frame into multiple transmission units for each frequency, wherein a frame comprises an integer number of the transmission units. The apparatus transmits uplink communication based on the multiple transmission units, wherein each transmission unit comprises at least one on period and at least one off period corresponding to each of a plurality of frequencies, wherein during an on period the UE transmits uplink communication on the corresponding frequency and during an off period the UE refrains from transmitting uplink communication on the corresponding frequency. Each transmission unit may comprise multiple on periods and multiple off periods. The on/off periods may be configured by a base station or specified for each frame type.

Claims

1. A method of wireless communication at a user equipment (UE), comprising:

segmenting, at the UE, an uplink duration in each frame into multiple transmission units for the UE, each transmission unit comprising at least one on period and at least one off period at a single frequency of a plurality of frequencies, wherein a frame comprises an integer number of the transmission units; and

transmitting uplink communication based on the multiple transmission units,

wherein for each given transmission unit of the multiple transmission units during an on period of the transmission unit the UE transmits uplink communication and during an off period of the transmission unit the UE refrains from transmitting uplink communication.

2. The method of claim 1, wherein each transmission unit comprises multiple on periods and multiple off periods.

3. The method of claim 1, wherein the on period and the off period are configured by a base station or specified for each frame type.

4. The method of claim 1, wherein each on period is smaller than each off period.

5. The method of claim 1, wherein each on period has a same length as each off period.

6. The method of claim 1, wherein each on period comprises a length of 5 ms and each off period comprises a length of 5 ms.

7. The method of claim 1, wherein the transmission units of the UE are multiplexed with a second transmission units of a second UE, wherein the on period of the transmission units of the UE corresponds to a second off period for the second transmission units of the second UE and the off period of the transmission units of the UE correspond to a second on period for the second transmission units of the second UE.

8. The method of claim 1, wherein the UE transmits the communication without performing a listen before talk (LBT) procedure.

9. The method of claim 1, wherein the UE transmits the uplink communication subject to a listen before talk (LBT) in each transmission unit or in each on period.

10. The method of claim 1, further comprising:

receiving uplink scheduling from a base station in scheduling units based on the transmission units.

11. The method of claim 1, further comprising:

receiving an uplink start delay in scheduling units based on the transmission units.

12. The method of claim 1, wherein demodulation reference signal (DMRS) transmissions and physical uplink shared channel (PUSCH) transmissions within a same transmission unit are based on a same redundancy version (RV) and a same scrambling sequence.

13. The method of claim 1, wherein the wireless communication comprises enhanced machine type communication (eMTC).

14. An apparatus for wireless communication at a user equipment (UE), comprising:

means for segmenting, at the UE, an uplink duration in each frame into multiple transmission units for the UE, each transmission unit comprising at least one on period and at least one off period at a single frequency of a plurality of frequencies, wherein a frame comprises an integer number of the transmission units; and

means for transmitting uplink communication based on the multiple transmission units, wherein for each given transmission unit of the multiple transmission units during an on period of the transmission unit the UE transmits uplink communication and during an off period of the transmission unit the UE refrains from transmitting uplink communication.

15. The apparatus of claim 14, wherein each transmission unit comprises multiple on periods and multiple off periods.

16. The apparatus of claim 14, wherein the on period and the off period are configured by a base station or specified for each frame type.

17. The apparatus of claim 14, wherein each on period is smaller than each off period.

18. The apparatus of claim 14, wherein each on period has a same length as each off period.

19. The apparatus of claim 14, wherein each on period comprises a length of 5 ms and each off period comprises a length of 5 ms.

20. The apparatus of claim 14, wherein the transmission units of the UE are multiplexed with a second transmission units of a second UE, wherein the on period of the transmission units of the UE corresponds to a second off period for the second transmission units of the second UE and the off period of the transmission units of the UE corresponds to a second on period for the second transmission units of the second UE.

21. The apparatus of claim 14, wherein the means for transmitting transmit the uplink communication subject to a listen before talk (LBT) in each transmission unit or in each on period.

22. The apparatus of claim 14, wherein the UE transmits the communication without performing a listen before talk (LBT) procedure.

23. The apparatus of claim 14, further comprising:

means for receiving uplink scheduling from a base station in scheduling units based on the transmission units.

24. The apparatus of claim 14, further comprising:

means for receiving an uplink start delay in scheduling units based on the transmission units.

25. The apparatus of claim 14, wherein demodulation reference signal (DMRS) transmissions and physical uplink shared channel (PUSCH) transmissions within a same transmission unit are based on a same redundancy version (RV) and a same scrambling sequence.

26. The apparatus of claim 14, wherein the wireless communication comprises enhanced machine type communication (eMTC).

27. An apparatus for wireless communication at a user equipment (UE) comprising:

a memory; and

at least one processor coupled to the memory and configured to;

segment, at the UE, an uplink duration in each frame into multiple transmission units for the UE, each transmission unit comprising at least one on period and at least one off period at a single frequency of a plurality of frequencies, wherein a frame comprises an integer number of the transmission units; and

transmit uplink communication based on the multiple transmission units, wherein for each given transmission unit of the multiple transmission units during an on period of the transmission unit the UE transmits uplink communication and during an off period of the transmission unit the UE refrains from transmitting uplink communication.

28. The apparatus of claim 27, wherein each transmission unit comprises multiple on periods and multiple off periods.

29. The apparatus of claim 27, wherein the on period and the off period are configured by a base station or specified for each frame type.

30. The apparatus of claim 27, wherein each on period is smaller than each off period.

31. The apparatus of claim 27, wherein each on period has a same length as each off period.

32. The apparatus of claim 27, wherein each on period comprises a length of 5 ms and each off period comprises a length of 5 ms.

33. The apparatus of claim 27, wherein the transmission units of the UE are multiplexed with a second transmission units of a second UE, wherein the on period of the transmission units of the UE corresponds to a second off period for the second transmission units of the second UE and the off period of the transmission units of the UE corresponds to a second on period for the second transmission units of the second UE.

34. The apparatus of claim 27, wherein the UE transmits the uplink communication subject to a listen before talk (LBT) in each transmission unit or in each on period.

35. The apparatus of claim 27, wherein the UE transmits the communication without performing a listen before talk (LBT) procedure.

36. The apparatus of claim 27, wherein the at least one processor is further configured to:

receive uplink scheduling from a base station in scheduling units based on the transmission units.

37. The apparatus of claim 27, wherein the at least one processor is further configured to:

receive an uplink start delay in scheduling units based on the transmission units.

38. The apparatus of claim 27, wherein demodulation reference signal (DMRS) transmissions and physical uplink shared channel (PUSCH) transmissions within a same transmission unit are based on a same redundancy version (RV) and a same scrambling sequence.

39. The apparatus of claim 27, wherein the wireless communication comprises enhanced machine type communication (eMTC).

40. A non-transitory computer-readable medium storing computer executable code for wireless communication at a user equipment (UE), comprising code to:

segment, at the UE, an uplink duration in each frame into multiple transmission units for the UE, each transmission unit comprising at least one on period and at least one off period at a single frequency of a plurality of frequencies, wherein a frame comprises an integer number of the transmission units; and

transmit uplink communication based on the multiple transmission units, wherein for each given transmission unit of the multiple transmission units during an on period of the transmission unit the UE transmits uplink communication and during an off period of the transmission unit the UE refrains from transmitting uplink communication.

41. The non-transitory computer-readable medium of claim 40, wherein each transmission unit comprises multiple on periods and multiple off periods.

42. The non-transitory computer-readable medium of claim 40, wherein the on period and the off period are configured by a base station or specified for each frame type.

43. The non-transitory computer-readable medium of claim 40, wherein each on period is smaller than each off period.

44. The non-transitory computer-readable medium of claim 40, wherein each on period has a same length as each off period.

45. The non-transitory computer-readable medium of claim 40, wherein each on period comprises a length of 5 ms and each off period comprises a length of 5 ms.

46. The non-transitory computer-readable medium of claim 40, wherein the transmission units of the UE are multiplexed with a second transmission units of a second UE, wherein the on period of the transmission units of the UE corresponds to a second off period for the second transmission units of the second UE and the off period of the transmission units of the UE corresponds to a second on period for the second transmission units of the second UE.

47. The non-transitory computer-readable medium of claim 40, wherein the UE transmits the uplink communication subject to a listen before talk (LBT) in each transmission unit or in each on period.

48. The non-transitory computer-readable medium of claim 40, wherein the UE transmits the communication without performing a listen before talk (LBT) procedure.

49. The non-transitory computer-readable medium of claim 40, further comprising code to:

receive uplink scheduling from a base station in scheduling units based on the transmission units.

50. The non-transitory computer-readable medium of claim 40, further comprising code to:

receive an uplink start delay in scheduling units based on the transmission units.

51. The non-transitory computer-readable medium of claim 40, wherein demodulation reference signal (DMRS) transmissions and physical uplink shared channel (PUSCH) transmissions within a same transmission unit are based on a same redundancy version (RV) and a same scrambling sequence.

52. The non-transitory computer-readable medium of claim 40, wherein the wireless communication comprises enhanced machine type communication (eMTC).