DYNAMIC BANDWIDTH CONFIGURATION IN NARROWBAND COMMUNICATION

• US 20180287870A1
• Filed: 12/19/2017
• Published: 10/04/2018
• Est. Priority Date: 04/03/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: YERRAMALLI, Srinivas, LIU, Chih-Hao, KADOUS, Tamer
• Granted Patent: US 11,469,945 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 41/0816 the condition being an adaptation, e.g. in response to network events
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0014 Three-dimensional division time-code-space division H04B7/0413, H04B7/0697
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0064 Rate requirement of the data, e.g. scalable bandwidth, data priority
• CPC Class Codes: H04L 5/0092 Indication of how the channel is divided
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 28/20 Negotiating bandwidth
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

In order to conserve power resources for low complexity UEs, a base station may apparatus dynamically adjust a bandwidth configuration of a UE or the base station and communicates with the UE according to the dynamically adjusted bandwidth configuration. The communication may be narrowband communication. A UE may apparatus dynamically adjust a bandwidth configuration of the UE and communicates with a base station based on the dynamically adjusted bandwidth configuration. The dynamically adjusted bandwidth configuration may correspond to a function performed by the UE.

Claims

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

adjusting a bandwidth configuration of the UE; and

communicating with a base station based on the adjusted bandwidth configuration.

2. The method of claim 1, wherein the bandwidth configuration is dynamically adjusted by the user equipment.

3. The method of claim 1, further comprising:

receiving an indication from the base station, wherein the bandwidth configuration of the UE is adjusted based on the indication received from the base station.

4. The method of claim 1, wherein the bandwidth configuration is adjusted based on a function performed by the UE.

5. The method of claim 4, wherein the function comprises a positioning function, and wherein adjusting the bandwidth configuration includes increasing the bandwidth configuration used for a measurement associated with the positioning function.

6. The method of claim 4, wherein the bandwidth configuration is adjusted for a positioning measurement, wherein the adjusted bandwidth configuration is based on an intended accuracy of the positioning measurement.

7. The method of claim 4, wherein the adjusted bandwidth configuration is based at least one Radio Resource Management (RRM) measurement reported by the user equipment for a serving cell or a neighbor cell.

8. The method of claim 7, wherein the adjusted bandwidth configuration comprises a different bandwidth for each cell being measured.

9. The method of claim 4, wherein the function comprises a mobility function, and wherein the adjusted bandwidth configuration includes a first bandwidth configuration for a first measurement associated with a serving cell and a second bandwidth configuration for a second measurement associated with a neighbor cell.

10. The method of claim 4, wherein the function comprises a voice over long term evolution (VoLTE) function, and wherein the adjusted bandwidth configuration includes an increased the bandwidth configuration for performing VoLTE or a bandwidth configuration for better quality of service for performing VoLTE.

11. The method of claim 4, wherein the function comprises radio link measurement (RLM), wherein adjusting the bandwidth configuration includes increasing the bandwidth configuration for RLM measurements prior to declaring a radio link failure.

12. The method of claim 4, wherein the function comprises transmission of a Sounding Reference Signal (SRS).

13. The method of claim 4, wherein the function comprises transmission of a random access preamble, and wherein adjusting the bandwidth configuration includes selecting a bandwidth for transmission of the random access preamble based on a resolution for timing advance correction.

14. The method of claim 4, wherein the UE uses a first bandwidth for performing the function and a second bandwidth for performing a different function.

15. The method of claim 1, wherein the bandwidth configuration is adjusted based on a reconfiguration determined at the UE.

16. The method of claim 15, further comprising:

receiving, using a first bandwidth, a control transmission indicating a communication associated with a second bandwidth, wherein the second bandwidth is larger than the first bandwidth,

wherein adjusting the bandwidth configuration includes increasing the bandwidth configuration from the first bandwidth to the second bandwidth in response to the control transmission.

17. 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;

adjust a bandwidth configuration of the UE; and

communicate with a base station based on the adjusted bandwidth configuration.

18. A method of wireless communication at a base station, comprising:

adjusting a bandwidth configuration of at least one of a user equipment (UE) or the base station; and

communicating with the UE according to the adjusted bandwidth configuration.

19. The method of claim 18, wherein the base station adjusts a bandwidth configuration of the UE based on a function performed by the UE.

20. The method of claim 19, wherein the function comprises a positioning function, and wherein the base station adjusts the bandwidth configuration of the UE includes increasing the bandwidth configuration for a measurement associated with the positioning function.

21. The method of claim 19, wherein the bandwidth configuration is adjusted for a positioning measurement, wherein the adjusted bandwidth configuration is based on an intended accuracy of the positioning measurement.

22. The method of claim 19, wherein the adjusted bandwidth configuration is based at least one Radio Resource Management (RRM) measurement reported by the user equipment for a serving cell or a neighbor cell.

23. The method of claim 19, wherein the function comprises a mobility function, and wherein the adjusted bandwidth configuration of the UE includes a first bandwidth configuration for a first measurement associated with a serving cell and a second bandwidth configuration for a second measurement associated with a neighbor cell.

24. The method of claim 19, wherein the function comprises a voice over long term evolution (VoLTE) function, and wherein the adjusted bandwidth configuration of the UE includes an increased bandwidth configuration used by the UE for performing VoLTE or a bandwidth configuration for better quality of service for performing VoLTE.

25. The method of claim 19, wherein the function comprises transmission of a Sounding Reference Signal (SRS), and wherein the base station adjusts the bandwidth configuration of the user equipment.

26. The method of claim 19, wherein the function comprises transmission of a random access preamble, and wherein the base station adjusts the bandwidth configuration of the user equipment, including selecting a bandwidth for transmission of the random access preamble based on a resolution for timing advance correction.

27. The method of claim 19, wherein the function comprises radio link measurement (RLM), wherein adjusting the bandwidth configuration of the UE includes increasing the bandwidth configuration for RLM measurements prior to declaring a radio link failure.

28. The method of claim 19, wherein the bandwidth configuration includes a first bandwidth for the UE to perform the function and a second bandwidth for the UE to perform a different function.

29. The method of claim 18, further comprising:

transmitting, using a first bandwidth, a control transmission to the UE indicating a communication associated with a second bandwidth, wherein the second bandwidth is larger than the first bandwidth; and

transmitting the communication to the UE using the second bandwidth.

30. The method of claim 18, wherein the base station adjusts the bandwidth configuration of the base station.

31. The method of claim 30, wherein adjusting the bandwidth configuration of the base station includes increasing a transmission bandwidth of the base station in response to at least one of:

a need for an increase in capacity;

a need for improved accuracy of measurements;

an application of the communication;

or

a group of UEs served by the base station.

32. An apparatus for wireless communication at a base station, comprising:

a memory; and

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

adjust a bandwidth configuration of at least one of a user equipment (UE) or the base station; and

communicate with the UE according to the adjusted bandwidth configuration.