# US 12,003,442 B2 · Reference signal notification method and apparatus

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- Number: US 12,003,442 B2
- Document ID: US12003442B2
- Status: Granted
- Kind: B2
- Application number: 16/673,217
- Filed: 2019-11-04
- Published: 2020-02-27
- Granted: 2024-06-04
- Earliest claimed: 2017-05-05
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Jun Luo; Zhengzheng Xiang; Jin Liu; Pu Yuan; Kelvin Kar Kin Au; Keyvan Zarifi; Mohammadhadi Baligh; Amine Maaref
- Web page: https://patentgrep.com/patent/US12003442B2

## CPC

- H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04B 7/0626: {Channel coefficients, e.g. channel state information [CSI]}
- H04B 17/327: Received signal code power [RSCP]
- H04L 5/005: {of common pilots, i.e. pilots destined for multiple users or terminals}
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports}
- H04W 36/0085: {Hand-off measurements}
- H04W 36/0094: {Definition of hand-off measurement parameters}
- H04W 56/0055: {determining timing error of reception due to propagation delay}
- H04L 5/0023: {Time-frequency-space}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Example reference signal notification methods and apparatus are described. One example method includes sending a reference signal notification message by a network device, where the reference signal notification message includes time resource information of a reference signal. According to the embodiments of the present specification, the reference signal notification message is used to notify user equipment (UE) of a reference signal configuration, especially information about a channel state information reference signal (CSI-RS).

## Claims

### Claim 1

A reference signal notification method, performed by a network device or a chipset for the network device, the method comprising:
receiving information about one or more synchronization signal (SS) blocks, wherein the information about the one or more SS blocks comprises at least one time index of the one or more SS blocks; and
sending a reference signal notification message, wherein the reference signal notification message comprises time resource information of a channel state information reference signal (CSI-RS), period information of the CSI-RS, and a cell identity and numerology information of the CSI-RS, wherein the time resource information is a time offset of the CSI-RS, wherein the period information indicates a periodicity of the CSI-RS, wherein the numerology information of the CSI-RS indicates a subcarrier spacing of the CSI-RS, wherein the reference signal notification message further comprises reference information used to indicate whether the time resource information is based on a current cell or a neighboring cell, and wherein the reference signal notification message further comprises beam information related to at least one time index of one or more synchronization signal (SS) blocks.

### Claim 2 (depends on 1)

The method according to claim 1, comprising:
sending the reference signal notification message to a user equipment (UE), wherein the network device is a network device in a current cell of the UE, or wherein the network device is a network device in a neighboring cell of a current cell of the UE.

### Claim 3

A reference signal notification method, performed by a user equipment (UE) or a chipset for the UE, the method comprising:
sending information about one or more synchronization signal (SS) blocks, wherein the information about the one or more SS blocks comprises at least one time index of the one or more SS blocks;
receiving a reference signal notification message, wherein the reference signal notification message comprises time resource information of a channel state information reference signal (CSI-RS), period information of the CSI-RS, and a cell identity and numerology information of the CSI-RS, wherein the time resource information is a time offset of the CSI-RS, wherein the period information indicates a periodicity of the CSI-RS, wherein the numerology information of the CSI-RS indicates a subcarrier spacing of the CSI-RS, wherein the reference signal notification message further comprises reference information used to indicate whether the time resource information is based on a current cell or a neighboring cell, and wherein the reference signal notification message further comprises beam information related to at least one time index of one or more synchronization signal (SS) blocks; and
receiving the CSI-RS based on the time resource information of the CSI-RS.

### Claim 4 (depends on 3)

The method according to claim 3, comprising:
the reference signal notification message is received from a network device in a current cell; or
the reference signal notification message is received from a network device in a neighboring cell of a current cell.

### Claim 5

A reference signal notification apparatus, comprising a transceiver, wherein
the transceiver is configured to:
receive information about one or more synchronization signal (SS) blocks, wherein the information about the one or more SS blocks comprises at least one time index of the one or more SS blocks; and
send a reference signal notification message, wherein the reference signal notification message comprises time resource information of a channel state information reference signal (CSI-RS), period information of the CSI-RS, and a cell identity and numerology information of the CSI-RS wherein the time resource information is a time offset of the CSI-RS, wherein the period information indicates a periodicity of the CSI-RS, wherein the numerology information of the CSI-RS indicates a subcarrier spacing of the CSI-RS, wherein the reference signal notification message further comprises reference information used to indicate whether the time resource information is based on a current cell or a neighboring cell, and wherein the reference signal notification message further comprises beam information related to at least one time index of one or more synchronization signal (SS) blocks.

### Claim 6 (depends on 5)

The apparatus according to claim 5, wherein
the transceiver is further configured to send the reference signal notification message to a UE, wherein the reference signal notification apparatus is a network device in a current cell of the UE, or wherein the network device is a network device in a neighboring cell of a current cell of the UE.

### Claim 7

A reference signal notification apparatus, comprising a transceiver, wherein
the transceiver is configured to:
send information about one or more synchronization signal (SS) blocks, wherein the information about the one or more SS blocks comprises at least one time index of the one or more SS blocks;
receive a reference signal notification message, wherein the reference signal notification message comprises time resource information of a channel state information reference signal (CSI-RS), period information of the CSI-RS, and a cell identity and numerology information of the CSI-RS, wherein the time resource information is a time offset of the CSI-RS, wherein the period information indicates a periodicity of the CSI-RS, wherein the numerology information of the CSI-RS indicates a subcarrier spacing of the CSI-RS, and wherein the reference signal notification message further comprises reference information used to indicate whether the time resource information is based on a current cell or a neighboring cell, and wherein the reference signal notification message further comprises beam information related to at least one time index of one or more synchronization signal (SS) blocks; and
receive the CSI-RS based on the time resource information of the CSI-RS.

### Claim 8 (depends on 7)

The apparatus according to claim 7, wherein:
the reference signal notification message is received from a network device in a current cell; or
the reference signal notification message is received from a network device in a neighboring cell of a current cell.