KR-102962481-B1 - Resources corresponding to bandwidth portions

KR102962481B1KR 102962481 B1KR102962481 B1KR 102962481B1KR-102962481-B1

Abstract

Devices, methods, and systems for evaluating wireless link quality using resources corresponding to bandwidth portions are disclosed. One method (500) includes the step (502) of receiving first information including a set of reference signal resources for a plurality of bandwidth portions. Each of the sets of reference signal resources corresponds to a bandwidth portion among the plurality of bandwidth portions. The method (500) includes the step (504) of receiving a plurality of spatial quasi-co-location information corresponding to a plurality of reference signal resources among the sets of reference signal resources. The method (500) includes the step (506) of evaluating wireless link quality based on the plurality of spatial quasi-co-location information.

Inventors

쿠치보틀라, 라비
바수 말릭, 프라틱
로어, 요아킴
정, 혜정
난지아, 비제이

Assignees

레노보 (싱가포르) 피티이. 엘티디.

Dates

Publication Date: 20260508
Application Date: 20190218
Priority Date: 20180216

Claims (20)

As a method performed by user equipment (UE), A step of receiving first information comprising a plurality of reference signal resource sets for a plurality of bandwidth parts (BWPs) – wherein each of the plurality of reference signal resource sets corresponds to each of the plurality of BWPs, and each of the plurality of BWPs is, It includes a group of consecutive physical resource blocks (PRBs), and Less than the total bandwidth size corresponding to the above UE, and Exceeding the bandwidth of the synchronization signal/physical broadcast channel block (SS/PBCH). A step of receiving multiple spatial quasi-co-location (QCL) information - each spatial QCL information among the multiple spatial QCL information corresponds to each reference signal resource of each reference signal resource set of each BWP among the multiple BWPs -; A step of evaluating the wireless link quality for an active BWP among the plurality of BWPs using a reference signal resource set corresponding to the active BWP and a first set of spatial QCL information among the plurality of spatial QCL information corresponding to the reference signal resource set - the wireless link quality is evaluated over a time period by considering measurements made on a reference signal resource set different from the reference signal resource set, and the first set of spatial QCL information includes a second set of spatial QCL information corresponding to the different reference signal resource set, and using measurements made on the different reference signal resource set facilitates obtaining a more accurate and long-term averaged wireless link quality -; A step of receiving a command for active BWP switching and switching the active BWP from the first BWP to the second BWP; and If the first reference signal resource of the first reference signal resource set for the first BWP is indicated to be spatially QCL with the second reference signal resource of the second reference signal resource set for the second BWP, the step of evaluating the wireless link quality at the second reference signal resource over an earlier time period by considering the measurement performed on the first reference signal resource. A method including
In paragraph 1, A method in which each of the plurality of reference signal resource sets comprises an SS/PBCH block, a channel state information reference signal (CSI-RS), or a combination thereof.
In paragraph 1, The above wireless link quality is evaluated in each time period among multiple time periods.
In paragraph 3, A method further comprising the step of evaluating measurements over a number of prior time periods that are predefined for the time period in order to evaluate the wireless link quality of a time period among the plurality of time periods.
In paragraph 3, A method further comprising the step of receiving a time window configuration for a time window of wireless link monitoring, wherein the time window of wireless link monitoring comprises at least one time period among the plurality of time periods, and the time window configuration comprises a time window offset, a time window duration, a time window periodicity, or a combination of some of these.
In paragraph 1, A method in which the above-mentioned plurality of reference signal resource sets includes a plurality of wireless link monitoring reference signal resource sets.
In paragraph 6, A method further comprising the step of indicating an out-of-sync indication to upper layers in the UE through the physical layer in the UE when the wireless link quality is less than a first quality threshold for all wireless link monitoring reference signal resources in the wireless link monitoring reference signal resource set among the plurality of wireless link monitoring reference signal resource sets for the active BWP among the plurality of BWPs.
In paragraph 6, A method further comprising the step of indicating an in-sync indication to upper layers in the UE through the physical layer in the UE when the wireless link quality exceeds a second quality threshold for any wireless link monitoring reference signal resource in the wireless link monitoring reference signal resource set among the plurality of wireless link monitoring reference signal resource sets for the active BWP among the plurality of BWPs.
In paragraph 6, A method further comprising the step of counting the number of synchronization instances and the number of out-of-synchronization instances occurring in the plurality of BWPs, wherein the number of synchronization instances and the number of out-of-synchronization instances are used to determine a radio link failure.
In paragraph 1, A step of receiving second information including a plurality of candidate beam resource sets for the plurality of BWPs, wherein each of the plurality of candidate beam resource sets corresponds to a BWP among the plurality of BWPs, and the plurality of reference signal resource sets include a plurality of beam failure detection reference signal resource sets, and the step of evaluating the wireless link quality is based on a beam failure detection reference signal resource set among the plurality of beam failure detection reference signal resource sets corresponding to the active BWP among the plurality of BWPs. A step of detecting beam failure based on the above wireless link quality; A step of selecting a new beam in response to detecting the above beam failure; A step of selecting a candidate beam resource among the set of multiple candidate beam resources corresponding to the new beam; A step of performing a physical random access channel transmission on a beam failure recovery request random access channel resource associated with the above candidate beam resource; and A step of monitoring a control resource set for a beam failure recovery response in a first BWP among the plurality of BWPs above - the first BWP includes the control resource set for the beam failure recovery response, and the control resource set is associated with a beam failure recovery request random access channel resource associated with the candidate beam resource - A method that includes more.
In Paragraph 10, A method for indicating a beam failure to upper layers when the wireless link quality for all corresponding beam failure detection reference signal resources in the beam failure detection reference signal resource set of the active BWP is less than a third quality threshold.
In Paragraph 10, A method in which the above candidate beam resource is from a set of candidate beam resources among a plurality of sets of candidate beam resources corresponding to the active BWP.
In Paragraph 10, The above first BWP is a default BWP, and the UE switches to the default BWP when the BWP inactive timer for the active BWP expires.
In Paragraph 10, The above first BWP is an initial active downlink BWP.
As user equipment (UE), receiver; and processor Includes, The above receiver is, Receiving first information including a plurality of reference signal resource sets for a plurality of bandwidth parts (BWPs) - each of the plurality of reference signal resource sets corresponds to each of the plurality of BWPs, and each of the plurality of BWPs is, It includes a group of consecutive physical resource blocks (PRBs), and Less than the total bandwidth size corresponding to the above UE, and Exceeding the bandwidth of the synch synchronization signal/physical broadcast channel block (SS/PBCH) -, Receive multiple spatial quasi-co-location (QCL) information - each spatial QCL information among the multiple spatial QCL information corresponds to each reference signal resource of each reference signal resource set of each BWP among the multiple BWPs -; The processor evaluates the wireless link quality for an active BWP among the plurality of BWPs using a reference signal resource set corresponding to the active BWP and a first set of spatial QCL information among the plurality of spatial QCL information corresponding to the reference signal resource set, wherein the wireless link quality is evaluated over a time period by considering measurements made on a reference signal resource set different from the reference signal resource set, and the first set of spatial QCL information includes a second set of spatial QCL information corresponding to the different reference signal resource set, and utilizing measurements made on the different reference signal resource set facilitates obtaining a more accurate and long-term averaged wireless link quality. The receiver is further configured to receive a command for active BWP switching and to switch the active BWP from the first BWP to the second BWP, and A UE configured to evaluate the wireless link quality at the second reference signal resource over an earlier time period by taking into account a measurement performed on the first reference signal resource, when the first reference signal resource of the first reference signal resource set for the first BWP is indicated to be spatially QCL with the second reference signal resource of the second reference signal resource set for the second BWP.
In paragraph 15, Each of the above multiple reference signal resource sets is a UE comprising an SS/PBCH block, a channel state information reference signal (CSI-RS), or a combination thereof.
In paragraph 15, The above plurality of reference signal resource sets includes a plurality of wireless link monitoring reference signal resource sets, a UE.
In Paragraph 17, The processor is a UE that displays a synchronization out-of-synchronization indication to upper layers in the UE through the physical layer in the UE when the wireless link quality is less than a first quality threshold for all wireless link monitoring reference signal resources in the wireless link monitoring reference signal resource set among the plurality of wireless link monitoring reference signal resource sets for the active BWP among the plurality of BWPs.
In Paragraph 17, The above processor counts the number of synchronization instances and the number of synchronization out-of-synchronization instances occurring in the plurality of BWPs, and the number of synchronization instances and the number of synchronization out-of-synchronization instances are used to determine wireless link failure.
In paragraph 15, The receiver receives second information including a plurality of candidate beam resource sets for the plurality of BWPs, wherein each of the plurality of candidate beam resource sets corresponds to a BWP among the plurality of BWPs, and the plurality of reference signal resource sets include a plurality of beam failure detection reference signal resource sets, and the evaluation of the wireless link quality is based on the beam failure detection reference signal resource set among the plurality of beam failure detection reference signal resource sets corresponding to the active BWP among the plurality of BWPs. The above processor is, Detect beam failure based on the above wireless link quality, and In response to detecting the above beam failure, a new beam is selected, and Select a candidate beam resource from among the set of multiple candidate beam resources corresponding to the new beam, and Performs physical random access channel transmission on the beam failure recovery request random access channel resource associated with the above candidate beam resource, and Monitoring a set of control resources for a beam failure recovery response in the first BWP among the plurality of BWPs above, and The first BWP includes the control resource set for the beam failure recovery response, and the control resource set is a UE associated with the beam failure recovery request random access channel resource associated with the candidate beam resource.

Description

Resources corresponding to bandwidth portions Cross-reference regarding related applications This application claims priority to U.S. Patent Application No. 62/631,627, titled “RADIO LINK MONITORING AND LINK RECONFIGURATION WITH BANDWIDTH PART OPERATION,” filed by Hyejung Jung on February 16, 2018, the entirety of which is incorporated herein by reference. The subject matter disclosed in this specification generally relates to wireless communications, and more specifically to resources corresponding to bandwidth portions. The following abbreviations are defined herein, at least some of which are mentioned in the following description: 3GPP (Third Generation Partnership Project), 5G ( 5th Generation), ACK (Positive-Acknowledgment), AL (Aggregation Level), AMF (Access and Mobility Management Function), AP (Access Point), BFD (Beam Failure Detection), BPSK (Binary Phase Shift Keying), BS (Base Station), BSR (Buffer Status Report), BW (Bandwidth), BWP (Bandwidth Part), CA (Carrier Aggregation), CBRA (Contention-Based Random Access), CCA (Clear Channel Assessment), CCE (Control Channel Element), CDD (Cyclic Delay Diversity), CDMA (Code Division Multiple Access), CE (Control Element), CFRA (Contention-Free Random Access), CL (Closed-Loop), CoMP (Coordinated Multipoint), CP (Cyclic Prefix), CRC (Cyclic Redundancy Check), CSI (Channel State Information), CSI-RS (Channel State Information-Reference Signal), CSS (Common Search Space), CORESET (Control Resource Set), DFTS (Discrete Fourier Transform Spread), DCI (Downlink Control Information), DL (Downlink), DMRS (Demodulation Reference Signal), DRB (Data Radio Bearer), DRX (Discontinuous Reception), Downlink Pilot Time Slot (DwPTS), Enhanced Clear Channel Assessment (eCCA), Enhanced Mobile Broadband (eMBB), Evolved Node B (eNB), Effective Isotropic Radiated Power (EIRP), European Telecommunications Standards Institute (ETSI), Frame Based Equipment (FBE), Frequency Division Duplex (FDD), Frequency Division Multiplexing (FDM), Frequency Division Multiple (FDMA) Access), FD-OCC (Frequency Division Orthogonal Cover Code), gNB (5G Node B or Next Generation Node B), General Packet Radio Services (GPRS), Guard Period (GP), Global System for Mobile Communications (GSM), Globally Unique Temporary UE Identifier (GUTI), Home AMF (hAMF), Hybrid Automatic Repeat Request (HARQ), Home Location Register (HLR), Home PLMN (HPLMN), Home Subscriber Server (HSS), Identity or Identifier (ID), IE (Information Element), IMEI (International Mobile Equipment Identity), IMSI (International Mobile Subscriber Identity), IMT (International Mobile Telecommunications), IoT (Internet-of-Things), L2 (Layer 2), LAA (Licensed Assisted Access), LBE (Load Based Equipment), LBT (Listen-Before-Talk), LCH (Logical Channel), LCP (Logical Channel Prioritization), Log-Likelihood Ratio (LLR), Long Term Evolution (LTE), Multiple Access (MA), Medium Access (MAC) Control), MBMS (Multimedia Broadcast Multicast Services), MCS (Modulation Coding Scheme), MIB (Master Information Block), MIMO (Multiple Input Multiple Output), MM (Mobility Management), MME (Mobility Management Entity), MNO (Mobile Network Operator), mMTC (massive MTC), MPR (Maximum Power Reduction), MTC (Machine Type Communication), MUSA (Multi User) Shared Access), Non Access Stratum (NAS), Narrowband (NB), NACK or Negative-Acknowledgment (NAK), Network Entity (NE), Network Function (NF), Non-Orthogonal Multiple Access (NOMA), New Radio (NR), Network Repository Function (NRF), Network Slice Instance (NSI), Network Slice Selection Assistance Information (NSSAI), Network Slice Selection Function (NSSF), Network Slice Selection Policy (NSSP), Operation and Maintenance System (OAM), Orthogonal Frequency Division (OFDM) Multiplexing), Open-Loop (OL), Other System Information (OSI), Power Angular Spectrum (PAS), Physical Broadcast Channel (PBCH), Power Control (PC), Primary Cell (PCell), Policy Control Function (PCF), Physical Cell ID (PCID), Physical Downlink Control Channel (PDCCH), Packet Data Convergence Protocol (PDCP), PDSCH (Physical Downlink Shared Channel), PDMA (Pattern Division Multiple Access), PDU (Packet Data Unit), PHICH (Physical Hybrid ARQ Indicator Channel), PH (Power Headroom), PHR (Power Headroom Report), PHY (Physical Layer), PLMN (Public Land Mobile Network), PRACH (Physical Random Access Channel), PRB (Physical Resource Block), Primary Secondary Cell (PSCell), Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH), QCL (Quality of Service), QPSK (Quadrature Phase Shift Keying), RA (Registration Area), RAN (Radio Access Network), RAT (Radio Access Technology), RACH (Random Access Procedure), RAR (Random Access Response), REG (Resource Element Group), RLC (Radio Link Control), RLM (Radio Link Monitoring), RNTI (Radio) Network Temporary Identifier), Reference Signal (RS), Remaining Minimum System Information (RMSI), Radio Resource Control (RRC), Radio Resource Management (RRM), Resource Spread Multiple Access (RSM