RESOURCES CORRESPONDING TO BANDWIDTH PARTS

• US 20190261244A1
• Filed: 02/18/2019
• Published: 08/22/2019
• Est. Priority Date: 02/16/2018
• Status: Active Grant

• Current Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Jung, Hyejung, Basu Mallick, Prateek, Loehr, Joachim, Nangia, Vijay, Kuchibhotla, Ravi
• Granted Patent: US 10,728,825 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 36/0058 Transmission of hand-off measurement information, e.g. measurement reports
• CPC Class Codes: H04W 36/00837 Determination of triggering parameters for hand-off
• CPC Class Codes: H04W 36/0094 Definition of hand-off measurement parameters
• CPC Class Codes: H04W 36/06 Reselecting a communication resource in the serving access point
• CPC Class Codes: H04W 36/305 Handover due to radio link failure control signalling for hand-off failure H04W36/0079

Abstract

Apparatuses, methods, and systems are disclosed for assessing a radio link quality using resources corresponding to bandwidth parts. One method includes receiving first information including a plurality of reference signal resource sets for a plurality of bandwidth parts. Each reference signal resource set of the plurality of reference signal resource sets corresponds to a bandwidth part of the plurality of bandwidth parts. The method includes receiving a plurality of spatial quasi-co-location information corresponding to a plurality of reference signal resources of the plurality of reference signal resource sets. The method includes assessing a radio link quality based on the plurality of spatial quasi-co-location information.

Claims

1. A method comprising:

receiving first information comprising a plurality of reference signal resource sets for a plurality of bandwidth parts, wherein each reference signal resource set of the plurality of reference signal resource sets corresponds to a bandwidth part of the plurality of bandwidth parts;

receiving a plurality of spatial quasi-co-location information corresponding to a plurality of reference signal resources of the plurality of reference signal resource sets; and

assessing a radio link quality based on the plurality of spatial quasi-co-location information.

2. The method of claim 1, wherein each reference signal resource set of the plurality of reference signal resource sets comprises a synchronization signal/physical broadcast channel block, a channel state information reference signal, or some combination thereof.

3. The method of claim 1, wherein the radio link quality is assessed each time period of a plurality of time periods.

4. The method of claim 3, further comprising, for a radio link quality assessment of a time period of the plurality of time periods, evaluating measurements over a predefined number of previous time periods with respect to the time period.

5. The method of claim 3, further comprising receiving a time window configuration for a time window of radio link monitoring, wherein the time window of radio link monitoring comprises at least one time period of the plurality of time periods and the time window configuration comprises a time window offset, a time window duration, a time window periodicity, or some combination thereof.

6. The method of claim 1, wherein the plurality of reference signal resource sets comprises a plurality of radio link monitoring reference signal resource sets.

7. The method of claim 6, further comprising indicating, via a physical layer in a user equipment, an out-of-sync indication to higher layers in the user equipment if the radio link quality is below a first quality threshold for all radio link monitoring reference signal resources in a radio link monitoring reference signal resource set of the plurality of radio link monitoring reference signal resource sets for an active bandwidth part of the plurality of bandwidth parts.

8. The method of claim 6, further comprising indicating, via a physical layer in a user equipment, an in-sync indication to higher layers in the user equipment if the radio link quality is above a second quality threshold for any radio link monitoring reference signal resource in a radio link monitoring reference signal resource set of the plurality of radio link monitoring reference signal resource sets for an active bandwidth part of the plurality of bandwidth parts.

9. The method of claim 6, further comprising counting a number of in-sync instances and a number of out-of-sync instances that occur in the plurality of bandwidth parts, wherein the number of in-sync instances and the number of out-of-sync instances are used for determining a radio link failure.

10. The method of claim 1, further comprising:

receiving second information comprising a plurality of candidate beam resource sets for the plurality of bandwidth parts, wherein;

each candidate beam resource set of the plurality of candidate beam resource sets corresponds to a bandwidth part of the plurality of bandwidth parts;

the plurality of reference signal resource sets comprises a plurality of beam failure detection reference signal resource sets; and

assessing the radio link quality is based on a beam failure detection reference signal resource set of the plurality of beam failure detection reference signal resources sets corresponding to an active bandwidth part of the plurality of bandwidth parts;

detecting a beam failure based on the radio link quality;

selecting a new beam in response to detecting the beam failure;

selecting a candidate beam resource of the plurality of candidate beam resource sets corresponding to the new beam;

performing a physical random access channel transmission on a beam failure recovery request random access channel resource associated with the candidate beam resource; and

monitoring a control resource set for a beam failure recovery response in a first bandwidth part of the plurality of bandwidth parts, wherein the first bandwidth part includes the control resource set for the beam failure recovery response, and the control resource set is associated with the beam failure recovery request random access channel resource associated with the candidate beam resource.

11. The method of claim 10, wherein beam failure is indicated to higher layers if the radio link quality for all corresponding beam failure detection reference signal resources in the beam failure detection reference signal resource set of the active bandwidth part is less than a third quality threshold.

12. The method of claim 10, wherein the candidate beam resource is from a candidate beam resource set of the plurality of candidate beam resource sets corresponding to an active bandwidth part.

13. The method of claim 10, wherein the first bandwidth part is a default bandwidth part, and a user equipment switches to the default bandwidth part if a bandwidth part inactivity timer expires for an active bandwidth part.

14. The method of claim 10, wherein the first bandwidth part is an initial active downlink bandwidth part.

15. An apparatus comprising:

a receiver that;

receives first information comprising a plurality of reference signal resource sets for a plurality of bandwidth parts, wherein each reference signal resource set of the plurality of reference signal resource sets corresponds to a bandwidth part of the plurality of bandwidth parts; and

receives a plurality of spatial quasi-co-location information corresponding to a plurality of reference signal resources of the plurality of reference signal resource sets; and

a processor that assesses a radio link quality based on the plurality of spatial quasi-co-location information.

16. The apparatus of claim 15, wherein each reference signal resource set of the plurality of reference signal resource sets comprises a synchronization signal/physical broadcast channel block, a channel state information reference signal, or some combination thereof.

17. The apparatus of claim 15, wherein the plurality of reference signal resource sets comprises a plurality of radio link monitoring reference signal resource sets.

18. The apparatus of claim 17, wherein the processor indicates, via a physical layer in a user equipment, an out-of-sync indication to higher layers in the user equipment if the radio link quality is below a first quality threshold for all radio link monitoring reference signal resources in a radio link monitoring reference signal resource set of the plurality of radio link monitoring reference signal resource sets for an active bandwidth part of the plurality of bandwidth parts.

19. The apparatus of claim 17, wherein the processor counts a number of in-sync instances and a number of out-of-sync instances that occur in the plurality of bandwidth parts, wherein the number of in-sync instances and the number of out-of-sync instances are used for determining a radio link failure.

20. The apparatus of claim 15, wherein:

the receiver receives second information comprising a plurality of candidate beam resource sets for the plurality of bandwidth parts, wherein;

each candidate beam resource set of the plurality of candidate beam resource sets corresponds to a bandwidth part of the plurality of bandwidth parts;

the plurality of reference signal resource sets comprises a plurality of beam failure detection reference signal resource sets; and

assessing the radio link quality is based on a beam failure detection reference signal resource set of the plurality of beam failure detection reference signal resources sets corresponding to an active bandwidth part of the plurality of bandwidth parts; and

the processor;

detects a beam failure based on the radio link quality;

selects a new beam in response to detecting the beam failure;

selects a candidate beam resource of the plurality of candidate beam resource sets corresponding to the new beam;

performs a physical random access channel transmission on a beam failure recovery request random access channel resource associated with the candidate beam resource; and

monitors a control resource set for a beam failure recovery response in a first bandwidth part of the plurality of bandwidth parts, wherein the first bandwidth part includes the control resource set for the beam failure recovery response, and the control resource set is associated with the beam failure recovery request random access channel resource associated with the candidate beam resource.

21. The apparatus of claim 20, wherein the candidate beam resource is from a candidate beam resource set of the plurality of candidate beam resource sets corresponding to an active bandwidth part.