SIMULTANEOUS NARROWBAND TRANSMISSION/RECEPTION IN ENHANCED MACHINE TYPE COMMUNICATIONS

• US 20160301503A1
• Filed: 04/08/2016
• Published: 10/13/2016
• Est. Priority Date: 04/10/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: RICO ALVARINO, Alberto, XU, Hao, GAAL, Peter, CHEN, Wanshi
• Granted Patent: US 10,491,343 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 24/08 Testing, supervising or monitoring using real traffic
• CPC Class Codes: H04W 36/16 Performing reselection for specific purposes
• CPC Class Codes: H04W 36/362 Conditional handover
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 68/005 Transmission of information for alerting of incoming communication
• CPC Class Codes: H04W 74/0833 Random access procedures, e.g. with 4-step access
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Certain aspects of the present disclosure generally relate to wireless communications, and more specifically to narrowband retuning for simultaneous transmission and reception (e.g., broadcast-broadcast or broadcast-unicast) in enhanced machine type communications (eMTC). An example method that can be performed by a base station (BS) generally includes transmitting a first type of signal in a first set of narrowband resources for a first duration and transmitting a second type of signal in a second set of narrowband resources for a second duration. A user equipment (UE) can monitoring for the first type of signal in the first set of narrowband resources for the first duration and tune-away to the second set of narrowband resources to monitor for the second type of signal for the second duration.

Claims

1. A method for wireless communications by a base station (BS), comprising:

transmitting a first type of signal in a first set of narrowband resources for a first duration; and

transmitting a second type of signal in a second set of narrowband resources for a second duration.

2. The method of claim 1, wherein at least one of the first type of signal or the second type of signal comprises a bundled transmission.

3. The method of claim 1, wherein at least one of the first type of signal or the second type of signal comprises a frequency hopped transmission.

4. The method of claim 1, wherein the first type of signal comprises a broadcast transmission and the second type of signal comprises a unicast transmission.

5. The method of claim 4, wherein:

the broadcast transmission comprises a physical broadcast channel (PBCH), a system information block (SIB), a paging transmission, or a random access response (RAR); and

the unicast transmission comprises a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH).

6. The method of claim 5, wherein:

the broadcast transmission comprises a paging transmission; and

the second duration comprises a paging opportunity.

7. The method of claim 5, wherein:

the broadcast transmission comprises a RAR; and

the method further comprises receiving an uplink random access channel (RACH) message in a third set of narrowband resources.

8. The method of claim 4, wherein:

the second duration is based on a discontinuous reception (DRX) cycle; and

the DRX cycle is based on a bundling size of the unicast transmission.

9. The method of claim 1, wherein at least one of the first duration or the second duration comprises a duration agreed upon between a user equipment (UE) and the BS.

10. The method of claim 9, wherein the agreed upon duration is based on a bundling size of at least one of the first type of signal or the second type of signal.

11. The method of claim 1, wherein:

the first duration is based on a first discontinuous reception (DRX) cycle; and

the second duration is based on a second DRX cycle.

12. The method of claim 11, wherein the first DRX cycle does not overlap the second DRX cycle.

13. The method of claim 11, wherein the first DRX cycle at least partially overlaps the second DRX cycle.

15. The method of claim 1, wherein the first type of signal comprises a broadcast transmission and the second type of signal comprises a unicast transmission.

16. The method of claim 15, wherein:

the broadcast transmission comprises a physical broadcast channel (PBCH), a system information block (SIB), a paging transmission, or a random access response (RAR); and

the unicast transmission comprises a physical downlink control channel (PDCCH) or a physical downlink shared channel (PDSCH),

17. The method of claim 16, wherein:

the broadcast transmission comprises a paging transmission; and

the second duration comprises a paging opportunity.

18. The method of claim 16, wherein:

the broadcast transmission comprises a RAR; and

the method further comprises transmitting an uplink random access channel (RACH) message in a third set of narrowband resources.

14. A method for wireless communications by a user equipment (UE), comprising:

monitoring for a first type of signal in a first set of narrowband resources for a first duration; and

tuning-away, to a second set of narrowband resources, to monitor for a second type of signal for a second duration.

19. The method of claim 14, wherein at least one of the first duration or the second duration comprises a duration agreed upon between the UE and a base station (BS).

20. The method of claim 19, wherein the agreed upon duration is based on a bundling size of at least one of the first type of signal or the second type of signal.

21. The method of claim 14, wherein:

the first duration is based on a first discontinuous reception (DRX) cycle; and

the second duration is based on a second DRX cycle.

22. The method of claim 21, wherein the first DRX cycle does not overlap the second DRX cycle.

23. The method of claim 21, wherein the first DRX cycle at least partially overlaps the second DRX cycle.

24. The method of claim 14, wherein:

the first set of narrowband resources and the second set of narrowband resources comprise a plurality of narrowband regions; and

the monitoring comprises monitoring a narrowband in the first or second set of narrowband resources based on a frequency hopping.

25. The method of claim 24, further comprising re-tuning to a different narrowband region of the first or second set of narrowband resources to monitor for the first or second type of signal.

26. The method of claim 14, wherein:

the first duration comprises a duration until the first type of signal is successfully decoded; and

the second duration comprises a duration until the second type of signal is successfully decoded.

27. The method of claim 14, further comprising:

decoding the first type of signal on a first portion of the first set of narrowband resources, and

monitoring a second portion of the first set of narrowband resources for the second type of signal once the first type of signal is successfully decoded.

28. The method of claim 14, further comprising:

tuning-away to a third set of narrowband resources to monitor for the first or second type of signal for a third duration.

29. An apparatus for wireless communications by a base station (BS), comprising:

at least one processor configured to;

transmit a first type of signal in a first set of narrowband resources for a first duration; and

transmit a second type of signal in a second set of narrowband resources for a second duration; and

a memory coupled with the at least one processor.

30. An apparatus for wireless communications by a user equipment (UE), comprising:

at least one processor configured to;

monitor for a first type of signal in a first set of narrowband resources for a first duration; and

tune-away, to a second set of narrowband resources, to monitor for a second type of signal for a second duration; and

a memory coupled with the at least one processor.