# US 11,910,371 B2 · Spatial quasi co-location indication for control resource set and downlink bandwidth part

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- Number: US 11,910,371 B2
- Document ID: US11910371B2
- Status: Granted
- Kind: B2
- Application number: 16/663,297
- Filed: 2019-10-24
- Published: 2020-04-30
- Granted: 2024-02-20
- Earliest claimed: 2018-10-26
- Assignees: QUALCOMM Incorporated
- Applicants: QUALCOMM Incorporated
- Inventors: Yan Zhou; Tao Luo; Prashanth Haridas Hande; Wanshi Chen; Juan Montojo; Heechoon Lee; Huilin Xu; Hung Dinh Ly
- Web page: https://patentgrep.com/patent/US11910371B2

## CPC

- H04W 72/046: {the resource being in the space domain, e.g. beams}
- H04L 5/0092: {Indication of how the channel is divided}
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 56/001: {Synchronization between nodes}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- H04W 80/02: Data link layer protocols
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

Certain aspects of the present disclosure provide techniques that may allow a base station and user equipment (UE) to be in agreement on spatial quasi co-location (QCL) assumptions for transmission in certain scenarios. The techniques may be used, for example, to determine QCL assumptions for downlink transmissions sent in an initial control resource set (CORESET) on an initial downlink bandwidth part (BWP) where dedicated signaling of such assumptions may be lacking. In some cases, the techniques may involve a UE determining a beam to use for monitoring for a physical downlink control channel (PDCCH) transmission on the initial CORESET in the initial downlink BWP that lacks dedicated signaling of QCL information and monitoring for the PDCCH on the initial CORESET in the initial BWP using the determined beam. Other aspects and features are also claimed and described.

## Claims

### Claim 1

A method of wireless communication by a user equipment (UE), the method comprising:
determining, for monitoring for a physical downlink control channel (PDCCH) transmission on an initial control resource set (CORESET) having a CORESET identifier of 0 in an initial downlink (DL) bandwidth part (BWP) having a BWP identifier of 0, quasi co-location (QCL) information from physical downlink shared channel (PDSCH) configuration information for a reference DL BWP; and
monitoring for the PDCCH transmission on the initial CORESET in the initial DL BWP using the determined QCL information.

### Claim 2 (depends on 1)

The method of claim 1, wherein the initial CORESET is configured via a master information block (MIB).

### Claim 3 (depends on 1)

The method of claim 1, wherein the reference DL BWP is a fixed DL BWP.

### Claim 4 (depends on 1)

The method of claim 1, wherein the reference DL BWP has a lowest BWP identifier that has dedicated signaling of the QCL information.

### Claim 5

A method of wireless communication by a network entity, the method comprising:
signaling, based on a first downlink (DL) bandwidth part (BWP) of a control resource set (CORESET) lacking dedicated signaling of quasi co-location (QCL) information for a user equipment (UE), QCL information in physical downlink shared channel (PDSCH) configuration information for a second DL BWP regarding a beam, the beam for a physical downlink control channel (PDCCH) transmission on the CORESET in the first DL BWP, wherein the QCL information in the PDSCH configuration information is configured to indicate QCL information for determining the beam for the PDCCH transmission on the CORESET in the first DL BWP; and
transmitting the PDCCH transmission to the UE on the CORESET in the first DL BWP using the beam;
wherein the second DL BWP is a fixed DL BWP.

### Claim 6 (depends on 5)

The method of claim 5, wherein the CORESET comprises an initial CORESET configured via a master information block (MIB).

### Claim 7 (depends on 5)

The method of claim 5, wherein signaling the QCL information in the PDSCH configuration information for the second DL BWP regarding the beam comprises dedicated signaling of the QCL information in the PDSCH configuration information for the second DL BWP.

### Claim 8 (depends on 7)

The method of claim 7, wherein the QCL information from the PDSCH configuration information for the second DL BWP corresponds to a lowest BWP identifier that has dedicated signaling of QCL information.

### Claim 9

A user equipment (UE) for wireless communication, the UE comprising:
a memory; and
a processor coupled to the memory, wherein the processor is configured to:
determine, for monitoring for a physical downlink control channel (PDCCH) transmission on an initial control resource set (CORESET) having a CORESET identifier of 0 in an initial downlink (DL) bandwidth part (BWP) having a BWP identifier of 0, quasi co-location (QCL) information from physical downlink shared channel (PDSCH) configuration information for a reference DL BWP; and
monitor for the PDCCH transmission on the initial CORESET in the initial DL BWP using the determined QCL information.

### Claim 10 (depends on 9)

The UE of claim 9, wherein the initial CORESET is configured via a master information block (MIB).

### Claim 11 (depends on 9)

The UE of claim 9, wherein the reference DL BWP is a fixed DL BWP.

### Claim 12 (depends on 9)

The UE of claim 9, wherein the reference DL BWP has a lowest BWP identifier that has dedicated signaling of the QCL information.

### Claim 13

A network entity for wireless communication, the network entity comprising:
a memory; and
a processor coupled to the memory, wherein the processor is configured to:
signal, based on a first downlink (DL) bandwidth part (BWP) of a control resource set (CORESET) lacking dedicated signaling of quasi co-location (QCL) information for a user equipment (UE), QCL information in physical downlink shared channel (PDSCH) configuration information for a second DL BWP regarding a beam, the beam for a physical downlink control channel (PDCCH) transmission on the CORESET in the first DL BWP, wherein the QCL information in the PDSCH configuration information is configured to indicate QCL information for determining the beam for the PDCCH transmission on the CORESET in the first DL BWP; and
transmit the PDCCH transmission to the UE on the CORESET in the first DL BWP using the beam;
wherein the second DL BWP is a fixed DL BWP.

### Claim 14 (depends on 13)

The network entity of claim 13, wherein the CORESET comprises an initial CORESET configured via a master information block (MIB).

### Claim 15 (depends on 13)

The network entity of claim 13, wherein the processor is further configured to perform dedicated signaling of the QCL information in the PDSCH configuration information for the second DL BWP.

### Claim 16 (depends on 15)

The network entity of claim 15, wherein the QCL information from the PDSCH configuration information for the second DL BWP corresponds to a lowest BWP identifier that has dedicated signaling of QCL information.