# US 12,004,183 B2 · Methods and devices for transmitting and receiving data, communication apparatus and system, and storage medium

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- Number: US 12,004,183 B2
- Document ID: US12004183B2
- Status: Granted
- Kind: B2
- Application number: 17/572,202
- Filed: 2022-01-10
- Published: 2022-04-28
- Granted: 2024-06-04
- Earliest claimed: 2018-09-27
- Assignees: Zte Corporation
- Applicants: ZTE Corporation
- Inventors: Chuangxin Jiang; Zhaohua Lu; Hao Wu; Bo Gao; YuNgok Li; Shujuan Zhang; Huahua Xiao; Wenjun Yan
- Web page: https://patentgrep.com/patent/US12004183B2

## CPC

- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 1/0025: {Transmission of mode-switching indication}
- H04L 1/0031: {Multiple signaling transmission (H04L1/1664, F15 take precedence)}
- H04L 1/0075: {Transmission of coding parameters to receiver (H04L1/0023 takes precedence)}
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- 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 5/0094: {Indication of how sub-channels of the path are allocated}
- H04L 1/0003: {by switching between different modulation schemes}
- H04L 1/0006: {by adapting the transmission format}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- 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)

## Abstract

A transmitting and receiving point (TRP) divides data scheduled by one downlink control information (DCI) into N data parts, and transmits the N data parts to a receiving side, where N≥1. A value of N and whether the N data parts have a correlation in a case of N>1 are determined by at least one of following scheduling information: a transmission configuration indicator (TCI) field, a demodulation reference signal (DMRS) port indicator, a modulation and coding scheme (MCS), a redundancy version (RV) or a new data indicator (NDI). After receiving the N data parts sent by the TRP, the receiving side determines whether the N data parts have the correlation according to at least one of the TCI, the DMRS port indicator, the MCS, the RV, or the NDI.

## Claims

### Claim 1

A data sending method, comprising:
transmitting, from a base station to a User Equipment (UE), a demodulation reference signal (DMRS) port indicator and a transmission configuration indicator (TCI) field;
wherein whether N data parts of a physical downlink shared channel (PDSCH) transmission transmitted by the base station are correlated in a case of N>1 is determined according to the DMRS port indicator and the TCI field, N being an integer greater than or equal to one;
wherein a value of N is determined according to the DMRS port indicator and the TCI field:
wherein each data part of the N data parts corresponds at least to one DMRS port group; or one transport block (“TB”); and
transmitting the PDSCH transmission.

### Claim 2 (depends on 1)

The data sending method of claim 1, wherein the N data parts are correlated when one data part is repeated with another data part.

### Claim 3 (depends on 1)

The data sending method according to claim 1, wherein the value of N is equal to R, and R is a number of TCIs indicated by the TCI field.

### Claim 4 (depends on 3)

The data sending method of claim 3, wherein in a case of R>1, the UE is notified whether the N data parts have the correlation by using the DMRS port indicator.

### Claim 5 (depends on 4)

The data sending method of claim 4, wherein a mapping relationship of the DMRS port indicator corresponding to the case of R>1 is different from a mapping relationship of the DMRS port indicator corresponding to a case of R=1.

### Claim 6 (depends on 4)

The data sending method of claim 4, wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.

### Claim 7 (depends on 5)

The data sending method of claim 5, wherein a size of TB is about half of the size obtained according to DCI indicating resource.

### Claim 8 (depends on 6)

The data sending method of claim 6, wherein a predefined relationship is satisfied between redundancy versions (“RVs”) of the N TBs.

### Claim 9 (depends on 8)

The data sending method of claim 8, a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is0.

### Claim 10

A data receiving method, comprising:
receiving a demodulation reference signal (DMRS) port indicator and a transmission configuration indicator (TCI) field from a base station;
determining whether N data parts of a physical downlink shared channel (PDSCH) transmission sent by the base station are correlated in a case of N>1 according to the DMRS port indicator and the TCI field, N being an integer greater than or equal to one;
wherein a value of N is determined according to the DMRS port indicator and the TCI field;
wherein each data part of the N data parts corresponds at least to one DMRS port group or one transport block (“TB”) of the; and
receiving the PDSCH transmission based on the determination.

### Claim 11 (depends on 10)

The data receiving method of claim 10, wherein the N data parts are correlated when one data part is repeated with another data part.

### Claim 12 (depends on 10)

The data receiving method of claim 10, wherein the value of N is R, and R is a number of TCIs indicated by the TCI field.

### Claim 13 (depends on 12)

The data receiving method of claim 12, wherein in a case of R>1, whether the N data parts have the correlation is determined according to the DMRS port indicator.

### Claim 14 (depends on 13)

The data receiving method of claim 13, wherein in a case where the DMRS port indicator characterizes that the N data parts have the correlation, the N data parts correspond to N TBs.

### Claim 15 (depends on 14)

The data receiving method of claim 14, wherein a mapping relationship of the DMRS port indicator corresponding to the case of R>1 is different from a mapping relationship of the DMRS port indicator corresponding to a case of R=1.

### Claim 16 (depends on 14)

The data receiving method of claim 14, wherein a predefined relationship is satisfied between redundancy versions (“RVs”) of the N TBs.

### Claim 17 (depends on 16)

The data receiving method of claim 16, wherein a size of TB is about half of the size obtained according to DCI indicating resource.

### Claim 18 (depends on 17)

The data sending method of claim 17, a relationship between RVs of a first TB of the N TBs and a second TB of the N TBs is be predefined as:
when RV of first TB is 0, RV of second TB is 2;
when RV of first TB is 2, RV of second TB is 3;
when RV of first TB is 3, RV of second TB is 1; and
when RV of first TB is 1, RV of second TB is 0.

### Claim 19 (depends on 1)

A communication device, comprising a processor and a memory, wherein the processor is configured to execute a data sending program stored in the memory to implement the steps of the data sending method of claim 1.

### Claim 20 (depends on 10)

A communication device, comprising a processor and a memory, wherein the processor is configured to execute a data receiving program stored in the memory to implement the steps of the data receiving method of claim 10.