# US 2019/0245666 A1 · Reference signal transmission method and device

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- Number: US 2019/0245666 A1
- Document ID: US20190245666A1
- Status: Published application
- Kind: A1
- Application number: 16/274,139
- Filed: 2019-02-12
- Published: 2019-08-08
- Earliest claimed: 2016-08-12
- Assignees: Zte Corporation
- Applicants: ZTE Corporation
- Inventors: Yuxin Wang; Zhaohua Lu; Yu Ngok Li; Yijian Chen; Hao Wu
- Web page: https://patentgrep.com/patent/US20190245666A1

## CPC

- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 1/00: Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)}
- 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}
- H04L 27/362: {Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated (H04L27/366 takes precedence)}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/541: using the level of interference
- H04B 7/06: at the transmitting station
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 27/0014: {Carrier regulation (of chaotic carriers H04L27/001; for multicarrier receivers H04L27/2657)}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- H04B: TRANSMISSION

## Abstract

Provided is a reference signal transmission method and device. The method includes that a base station transmits indication information to a UE through a downlink control signaling or a higher layer signaling, where the indication information includes one of: information indicating that the UE transmits a reference signal, information indicating whether the reference signal is contained in a physical downlink shared channel or a physical downlink control channel, or information indicating a transmission mode of a downlink reference signal or an uplink reference signal; or the base station pre-defines with the UE a time-frequency resource or a parameter set required by the UE or the base station to transmit the reference signal, where the time-frequency resource or the parameter set includes at least one of: a time domain symbol position, a frequency domain position, a transmission period and a subframe offset, a type of a reference signal sequence or an orthogonal mask. This solves the problem in the existing art of how to properly place a reference signal on time-frequency resources and trigger a signaling correspondingly.

## Claims

### Claim 1

A wireless communication method, comprising:
transmitting, by a base station, indication information to a user equipment (UE) through a higher layer signaling, wherein the indication information indicates whether a phase noise reference signal is contained in a physical downlink shared channel.

### Claim at position 2

2-6. (canceled)

### Claim 7

A wireless communication method, comprising:
receiving, by a user equipment (UE), indication information transmitted by a base station through a higher layer signaling, wherein the indication information indicates whether a phase noise reference signal is contained in a physical downlink shared channel; and
processing the phase noise reference signal.

### Claim at position 4

8-11. (canceled)

### Claim 12

A wireless communication method, comprising:
determining, by a base station, that an index of a modulation and coding scheme of downlink data is greater than or equal to five; and
transmitting, by the base station and in response to the determining, a phase noise reference signal to a user equipment (UE).

### Claim at position 6

13-17. (canceled)

### Claim 18

A reference signal transmission device, applied to a base station, comprising:
a processor configured to:
transmit indication information to a user equipment (UE) through a higher layer signaling, wherein the indication information indicates whether a phase noise reference signal is contained in a physical downlink shared channel.

### Claim at position 8

19-23. (canceled)

### Claim 24

A reference signal transmission device, applied to a user equipment (UE), comprising:
a processor configured to:
receive indication information transmitted by a base station through a higher layer signaling, wherein the indication information indicates whether a phase noise reference signal is contained in a physical downlink shared channel; and
process the phase noise reference signal.

### Claim at position 10

25-28. (canceled)

### Claim 29

A reference signal transmission device, applied to a base station, comprising:
a processor configured to:
determine that an index of a modulation and coding scheme of downlink data is greater than or equal to five; and
transmit, in response to the determined index, a phase noise reference signal to a user equipment (UE).

### Claim at position 12

30-38. (canceled)

### Claim 39

A wireless communication method, comprising:
determining, by a base station, that an index of a modulation and coding scheme of downlink data is greater than or equal to ten; and
transmitting, by the base station and in response to the determining, a phase noise reference signal to a user equipment (UE).

### Claim 40 (depends on 39)

The method of claim 39, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 41 (depends on 39)

The method of claim 39, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 42

A reference signal transmission device, applied to a base station, comprising:
a processor configured to:
determine that an index of a modulation and coding scheme of downlink data is greater than or equal to ten; and
transmit, in response to the determined index, a phase noise reference signal to a user equipment (UE).

### Claim 43 (depends on 42)

The reference signal transmission device of claim 42, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 44 (depends on 42)

The reference signal transmission device of claim 42, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 45 (depends on 1)

The method of claim 1, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 46 (depends on 1)

The method of claim 1, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 47 (depends on 7)

The method of claim 7, wherein the UE operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 48 (depends on 7)

The method of claim 7, wherein the UE operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 49 (depends on 12)

The method of claim 12, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 50 (depends on 12)

The method of claim 12, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 51 (depends on 18)

The reference signal transmission device of claim 18, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 52 (depends on 18)

The reference signal transmission device of claim 18, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 53 (depends on 24)

The reference signal transmission device of claim 24, wherein the UE operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 54 (depends on 24)

The reference signal transmission device of claim 24, wherein the UE operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.

### Claim 55 (depends on 29)

The reference signal transmission device of claim 29, wherein the base station operates at a modulation scheme of 16 QAM, 64 QAM or 256 QAM.

### Claim 56 (depends on 29)

The reference signal transmission device of claim 29, wherein the base station operates using code division multiple access (CDMA), time division multiple access (TDMA), or frequency division multiple access (FDMA) technology.