WO2020151388A1

WO2020151388A1 - Repeated transmission method, terminal, and network side device

Info

Publication number: WO2020151388A1
Application number: PCT/CN2019/124533
Authority: WO
Inventors: 鲁智; 孙鹏; 沈晓冬
Original assignee: 维沃移动通信有限公司
Priority date: 2019-01-25
Filing date: 2019-12-11
Publication date: 2020-07-30
Also published as: CN111277380A; CN111277380B

Abstract

Provided in the present disclosure are a repeated transmission method, terminal, and network side device. The method for use in the terminal comprises: receiving a downlink control signal DCI, the DCI being used for indicating transmission parameters of the repeated transmission of a physical shared channel by the terminal on the basis of N quasi co-location QCL parameters, N being an integer greater than 1; and, on the basis of the DCI and the N QCL parameters, implementing repeated translation of the physical shared channel.

Description

Repeated transmission method, terminal and network side equipment

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910075134.2 filed in China on January 25, 2019, the entire content of which is incorporated herein by reference.

Technical field

The embodiments of the present disclosure relate to the field of communication technologies, and in particular, to a repeated transmission method, a terminal, and a network side device.

Background technique

Compared with mobile communication systems in related technologies, fifth generation (5G) mobile communication systems need to adapt to more diverse scenarios and service requirements. The main scenarios of 5G mobile communication systems include: Enhanced Mobile Broadband (eMBB), Ultra-Reliable and Low Latency Communications (URLLC), and Large-scale Machine Type (Massive Machine Type) of Communication, mMTC), these scenarios put forward requirements for the system such as high reliability, low latency, large bandwidth and wide coverage.

Data transmission based on multiple quasi co-location (QCL) parameters can increase user reliability and throughput performance. For example, when a terminal transmits a physical shared channel based on multiple QCL parameters, in order to improve reliability, The physical shared channel can be repeatedly transmitted according to multiple QCL parameters.

However, in the related art, in the case of repeated transmission of the physical shared channel according to multiple QCL parameters, there is no relevant solution how to determine the transmission parameters for the repeated transmission of the physical shared channel according to multiple QCL parameters.

Summary of the invention

The embodiments of the present disclosure provide a repeated transmission method, a terminal, and a network-side device, so that when the terminal performs repeated transmission of a physical shared channel according to multiple QCL parameters, it determines to perform repeated transmission of a physical shared channel according to multiple QCL parameters To solve the problem of low reliability of data transmission due to the uncertain transmission parameters of repeated transmission by the terminal.

In order to solve the above problems, the present disclosure is implemented as follows:

In the first aspect, embodiments of the present disclosure provide a repeated transmission method applied to a terminal, and the method includes:

Receiving downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1;

According to the DCI and the N QCL parameters, repeat transmission of the physical shared channel.

In the second aspect, embodiments of the present disclosure provide a repeated transmission method, which is applied to a network side device, and the method includes:

Sending downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.

In a third aspect, embodiments of the present disclosure provide a terminal, and the terminal includes:

A receiving module, configured to receive downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1;

The transmission module is configured to perform repeated transmission of the physical shared channel according to the DCI and the N QCL parameters.

In a fourth aspect, embodiments of the present disclosure provide a network-side device, where the network-side device includes:

The sending module is configured to send downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.

In a fifth aspect, embodiments of the present disclosure provide a terminal, the terminal including a processor, a memory, and a computer program stored on the memory and running on the processor, the computer program being executed by the processor When realizing the steps of the repeated transmission method applied to the terminal as described above.

In a sixth aspect, embodiments of the present disclosure provide a network-side device that includes a processor, a memory, and a computer program stored on the memory and capable of running on the processor, and the computer program is The processor implements the steps of the repeated transmission method applied to the network side device when executed.

In a fourth aspect, embodiments of the present disclosure provide a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the repeated transmission method applied to the terminal as described above is implemented Or the steps of the repeated transmission method applied to the network side device as described above.

In the embodiment of the present disclosure, the terminal receives downlink control information DCI, which is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1, and According to the DCI and the N QCL parameters, repeat transmission of the physical shared channel. In this way, the terminal can not only obtain the transmission parameters of the repeated transmission of the physical shared channel based on the N quasi co-located QCL parameters, but also perform the repetition of the physical shared channel based on the N QCL parameters and the acquired transmission parameters of the repeated transmission. Transmission, which can improve the reliability of data transmission.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present disclosure more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative labor.

Figure 1 is a structural diagram of a network system applicable to embodiments of the present disclosure;

Figure 2 is a schematic diagram of the DCI structure provided by an embodiment of the present disclosure;

FIG. 3 is one of the flowcharts of the repeated transmission method provided by an embodiment of the present disclosure;

Figure 4a is one of the schematic diagrams of the DMRS port domain provided by an embodiment of the present disclosure;

FIG. 4b is the second schematic diagram of the DMRS port field provided by an embodiment of the present disclosure;

FIG. 4c is the third schematic diagram of the DMRS port domain provided by an embodiment of the present disclosure;

FIG. 4d is the fourth schematic diagram of the DMRS port domain provided by an embodiment of the present disclosure;

FIG. 5 is a schematic diagram of a first reserved code point provided by an embodiment of the present disclosure;

FIG. 6a is one of the schematic diagrams of the DMRS sharing mode in an embodiment of the present disclosure;

FIG. 6b is the second schematic diagram of the DMRS sharing mode of the embodiment of the present disclosure;

Figure 7a is one of the schematic diagrams of the first domain provided by an embodiment of the present disclosure;

Figure 7b is the second schematic diagram of the first domain provided by an embodiment of the present disclosure;

Figure 7c is one of the schematic diagrams of the second domain provided by an embodiment of the present disclosure;

Figure 8a is one of the schematic diagrams of the TCI status indication field provided by an embodiment of the present disclosure;

FIG. 8b is the second schematic diagram of the TCI status indication field provided by an embodiment of the present disclosure;

FIG. 8c is the second schematic diagram of the second domain provided by an embodiment of the present disclosure;

FIG. 9 is a schematic diagram of a third domain provided by an embodiment of the present disclosure;

Figure 10a is the third schematic diagram of the TCI status indication field provided by an embodiment of the present disclosure;

FIG. 10b is the fourth schematic diagram of the TCI status indication field provided by an embodiment of the present disclosure;

FIG. 11 is one of the schematic diagrams of the fifth domain provided by an embodiment of the present disclosure;

FIG. 12a is one of schematic diagrams of time-frequency resources of QCL parameters provided by an embodiment of the present disclosure;

FIG. 12b is the second schematic diagram of the time-frequency resource of QCL parameters provided by an embodiment of the present disclosure;

FIG. 12c is the third schematic diagram of time-frequency resources of QCL parameters provided by an embodiment of the present disclosure;

FIG. 13a is the fifth schematic diagram of the DMRS port domain provided by an embodiment of the present disclosure;

Figure 13b is a sixth schematic diagram of a DMRS port field provided by an embodiment of the present disclosure;

FIG. 13c is the seventh schematic diagram of the DMRS port domain provided by an embodiment of the present disclosure;

FIG. 13d is the eighth schematic diagram of the DMRS port field provided by an embodiment of the present disclosure;

FIG. 14 is the second flowchart of the repeated transmission method provided by an embodiment of the present disclosure;

FIG. 15 is one of the structural diagrams of a terminal provided by an embodiment of the present disclosure;

FIG. 16 is one of the structural diagrams of a network side device provided by an embodiment of the present disclosure;

FIG. 17 is the second structural diagram of a terminal provided by an embodiment of the present disclosure;

FIG. 18 is the second structural diagram of the network side device provided by an embodiment of the present disclosure.

detailed description

The technical solutions in the embodiments of the present disclosure will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

The terms "first" and "second" in this application are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In addition, the use of "and/or" in this application means at least one of the connected objects, such as A and/or B and/or C, which means that it includes A alone, B alone, C alone, and both A and B exist, Both B and C exist, A and C exist, and A, B and C all exist in 7 cases.

In order to facilitate understanding, some contents involved in the embodiments of the present disclosure are described below:

1. Network system

Please refer to FIG. 1. FIG. 1 is a structural diagram of a network system to which an embodiment of the present disclosure can be applied. As shown in FIG. 1, it includes a terminal, a multi-transmission and receiving point (Transmission and Receiving Point, TRP) 1 and TRP2. Among them, the terminal can communicate with TRP1 and TRP2.

In Figure 1, TRP1 and TRP2 respectively send a physical downlink shared channel (PDSCH) to the terminal. In addition, the TRP also sends a physical downlink control channel (PDCCH) to the terminal. It can be seen that the terminal can receive the DCI sent by the TRP through the PDCCH from one TRP, and receive the PDSCH from multiple TRPs.

In the embodiments of the present disclosure, the terminal may be referred to as a user terminal (User Equipment, UE). Optionally, the terminal may be a mobile phone, a tablet (Personal Computer), a laptop (Laptop Computer), or a personal digital assistant ( Personal Digital Assistant (PDA), Mobile Internet Device (MID), Wearable Device (Wearable Device), or in-vehicle equipment and other terminal-side devices. It should be noted that the embodiments of the present disclosure do not limit the Specific type.

TRP can be called a network side device. It should be noted that in the embodiments of the present disclosure, TRP can be determined by QCL parameters, but it is not limited to this.

2. Downlink Control Information (DCI)

Refer to Figure 2 for the specific structure of DCI. Figure 2 shows the possible fields (Fields) included in the DCI and the number of bits (Bit) corresponding to each field.

In Figure 2, DCI includes the following fields:

DCI format identifier (Identifier for DCI formats) field;

Carrier indicator (Carrier indicator) field;

Bandwidth Part Indicator (Bandwidth Part Indicator, BWP Indicator) field;

Frequency domain resource assignment (Frequency Domain Resource Assignment) domain;

Time Domain Resource Assignment (Time Domain Resource Assignment) domain;

Virtual resource block to physical resource block mapping (Virtual Resource Block-to-Physical Resource Block Mapping, VRB-to-PRB Mapping) field;

Physical resource block bundling size indicator (PRB Bundling Size Indicator) field;

Rate matching indicator (Rate Matching Indicator) field;

Zero Power Channel State Information Reference Signal Trigger (Zero Power Channel State Information Reference Signal Trigger, ZP CSI-RS Trigger) field;

The first transport block (Transport Block, TB) field, further, the first TB field also includes modulation and coding strategy (Modulation and Coding Scheme) sub-field, new data indication (New Data Indicator) sub-field and redundancy version (Redundancy) Version) subdomain;

The second TB field, further, the second TB field also includes a modulation and coding strategy (Modulation and Coding Scheme) subfield, a new data indication (New Data Indicator) subfield, and a redundancy version (Redundancy Version) subfield;

Hybrid automatic repeat request process number (Hybrid Automatic Repeat reQuest Process Number, HARQ Process Number) field;

Downlink Assignment Index (Downlink Assignment Index) field;

The transmit power control command (Transmit Power Control Command for Scheduled Physical Uplink Control Channel, TPC Command for Scheduled PUCCH) field in the scheduled physical uplink control channel;

PUCCH Resource Indicator (PUCCH Resource Indicator) field;

PDSCH-to-HARQ feedback time indication (PDSCH-to-HARQ Feedback Timing Indicator) field;

Antenna Port (Antenna Port(s)) field;

Transmission Configuration Indication (Transmission Configuration Indication) field;

Sounding Reference Signal Request (Sounding Reference Signal Request, SRS Request) field;

Code block group transmission information (Code Block Group Transmission Information, CBGTI) field;

Code block group refresh information (CBG Flushing out Information, CBGFI) field;

Demodulation Reference Signal Sequence Initialization (Demodulation Reference Signal Sequence Initialization, DMRS Sequence Initialization) field;

Cyclic Redundancy Check (CRC) field;

In practical applications, DCI can indicate the resource allocation information, repetition mode, redundancy version, HARQ process, Acknowledgement (ACK)/Negative Acknowledgement (ACK) for each physical downlink shared channel (PDSCH) Acknowledgement, NACK) and other information.

The repeated transmission method of the embodiment of the present disclosure will be described below.

Refer to FIG. 3, which is one of the flowcharts of the repeated transmission method provided by an embodiment of the present disclosure. The repeated transmission method shown in Figure 3 is applied to the terminal.

As shown in FIG. 3, the repeated transmission method applied to the terminal may include the following steps:

Step 301: Receive downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.

Optionally, the transmission parameter may include at least one of the following: repetition mode, demodulation reference signal DMRS sharing mode, DMRS port, precoding mode, time domain precoding granularity, and frequency domain resource offset value.

Among them, the physical shared channel may be: physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) or physical downlink shared channel (Physical downlink shared channel, PDSCH).

Step 302: Perform repeated transmission of the physical shared channel according to the DCI and the N QCL parameters.

Optionally, step 302 may be understood as: in the case of repeated transmission of the physical shared channel according to the N QCL parameters, repeated transmission is performed using the transmission parameter of the repeated transmission indicated by the received DCI.

In the repeated transmission method of this embodiment, the terminal receives downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1, And according to the DCI and the N QCL parameters, repeated transmission of the physical shared channel is performed. In this way, the terminal can not only obtain the transmission parameters of the repeated transmission of the physical shared channel based on the N quasi co-located QCL parameters, but also perform the repetition of the physical shared channel based on the N QCL parameters and the acquired transmission parameters of the repeated transmission. Transmission, which can improve the reliability of data transmission.

It can be seen from the foregoing that there are many specific manifestations of transmission parameters. In the embodiment of the present disclosure, the specific structure of the DCI is determined based on the specific manifestation of the transmission parameter indicated by it. Therefore, the specific structure of the DCI will be described below for the specific manifestation of the transmission parameters.

Manifestation one

Optionally, the DCI includes a first field, and the first field is used to indicate at least one of a repetition pattern of repeated transmission and a DMRS sharing pattern.

It should be understood that, further, in a case where the first field is used to indicate one of the repetition pattern and the DMRS sharing mode, the DCI may further include a second field, and the second field Used to indicate the other of the repetition mode and the DMRS sharing mode.

In the embodiment of the present disclosure, the repetitive mode is used to determine the TRP (or QCL parameter) corresponding to each transmission; the DMRS sharing mode is used to determine whether the same TRP (or QCL parameter) allows sharing of DMRS.

Optionally, the first domain is: a DMRS port domain, a newly added domain, or a transmission configuration indication TCI status indication domain.

Scenario 1: The first domain is a DMRS port domain.

In the case that the transmission layer of the physical shared channel is 1, the DMRS port field includes a first reserved code point, and the first reserved code point is used to indicate the repetition mode of repeated transmission and the DMRS sharing mode.

It should be noted that, in the embodiments of the present disclosure, the rank indicator (RI) can be restricted, that is, the transmission layer of the physical shared channel is restricted to 1, and the number of bits in the DMRS port field can be reduced by 1 bit. In this way, the DMRS port field can use the code point corresponding to the saved 1 bit to indicate the repetition mode of repeated transmission and the DMRS sharing mode, thereby enriching the functions of the DMRS port field.

Therefore, in the embodiment of the present disclosure, the first reserved code point can be understood as: the reserved bit generated by limiting the transmission layer of the physical shared channel to 1 in the DMRS port domain, and 1 reserved bit can correspond to 2 Reserved code points.

To facilitate understanding, please refer to the specific structure of the DMRS port field shown in FIGS. 4a to 4d.

For the DMRS port domain shown in Figure 4a to Figure 4d: Antenna port (Antenna port(s)) is shown as: 1000+DMRS port (DMRS Port); One Codeword: Codeword 0 is enabled (Codeword 0 enabled) ), Codeword 1 disabled (Codeword 1 disabled); Value (Value); Number of DMRS CDM groups without data (Number of DMRS CDM group(s) without Data); DMRS port (DMRS port(s)); Preload Number of front-load symbols (Number of front-load symbols); reserved (Reserved).

In addition, for the DMRS port field shown in FIG. 4a, the maximum length (Max Length) of the DMRS is 1, and the type of DMRS (DMRS-Type) is type 1. Before the RI is restricted, the number of bits required for the DMRS port domain is 4 bits. By restricting the RI, it can be reduced by 1 bit to 3 bits.

For the DMRS port field shown in FIG. 4b, the maximum length (Max Length) of the DMRS is 2, and the type of DMRS (DMRS-Type) is type 1. Before RI is restricted, the number of bits required for the DMRS port domain is 5 bits. By restricting RI, it can be reduced by 1 bit to 4 bits.

For the DMRS port field shown in FIG. 4c, the maximum length (Max Length) of the DMRS is 1, and the type of DMRS (DMRS-Type) is type 2. Before RI is restricted, the number of bits required for the DMRS port domain is 5 bits. By restricting RI, it can be reduced by 1 bit to 4 bits.

For the DMRS port field shown in FIG. 4d, the maximum length (Max Length) of the DMRS is 2, and the type of DMRS (DMRS-Type) is type 2. Before RI is restricted, the number of bits required for the DMRS port domain is 6 bits. By restricting the RI, it can be reduced by 1 bit to 5 bits.

It should be noted that the DMRS port field in FIGS. 4a to 4d is only an example, and therefore does not limit the specific structure of the DMRS port field.

In this scenario, the DMRS port domain uses the first reserved code point to indicate the repetition mode of repeated transmission and the DMRS sharing mode. To facilitate understanding, please refer to Figure 5 together.

In Figure 5, when the first reserved code point is 0, the repetition pattern of 4 repeated transmissions is shown as: receiving PDSCH according to QCL parameter i, receiving PDSCH according to QCL parameter j, receiving PDSCH according to QCL parameter i, and receiving PDSCH according to QCL parameter i j Receive PDSCH; the DMRS sharing mode for 4 repeated transmissions is: DMRS sharing is not allowed.

Since the DMRS is not allowed to be shared, the DMRS is transmitted for each transmission in the repeated transmission. As shown in Figure 6a, the PDSCH transmission according to QCL parameter i, the PDSCH transmission according to QCL parameter j, the PDSCH transmission according to QCL parameter i, and the PDSCH transmission 4 according to QCL parameter j, both transmit a DMRS .

When the first reserved code point is 1, the repetitive pattern of 4 repeated transmissions can be expressed as: PDSCH transmission according to QCL parameter i, PDSCH transmission according to QCL parameter i 2, PDSCH transmission according to QCL parameter j 3. PDSCH transmission 4 according to QCL parameter j; the DMRS sharing mode for 4 repeated transmissions is: DMRS sharing is allowed.

Since DMRS is allowed to be shared, transmissions based on the same QCL parameter in 4 repeated transmissions can share DMRS. As shown in Figure 6b, PDSCH1 based on QCL parameter i and PDSCH transmission 2 based on QCL parameter i only transmit one DMRS. Specifically, PDSCH transmission 1 based on QCL parameter i transmits DMRS, which is called shared DMRS transmission. PDSCH transmission 2 based on QCL parameter i does not send DMRS, which is called shared DMRS transmission, which uses the DMRS of transmission 1; PDSCH transmission 3 based on QCL parameter j and PDSCH transmission 4 based on QCL parameter j only transmit one DMRS, Specifically, PDSCH transmission 3 according to QCL parameter j sends DMRS, and PDSCH transmission 4 according to QCL parameter j does not send DMRS.

It should be noted that the number of transmissions, the number of TRPs, the repetition pattern, and the DMRS sharing pattern in FIG. 5 are only examples, and the above parameters are not limited accordingly. It can also be truncated and repeated according to this configuration, which will not be repeated here.

In addition, in Figure 5, Codepoint; Repeating Pattern. In Fig. 6a and Fig. 6b, the slot boundary; the symbol index; and the semi-static slot format.

Scenario 2: The first domain is a newly added domain.

Further, the first field in this scenario may be a newly added field formed by using the DMRS port field to limit the transmission layer of the physical shared channel to 1 saved by 1 bit.

In an implementation manner of this scenario, the first field may jointly indicate the repetition mode of repeated transmission and the DMRS sharing mode. For details, refer to FIG. 7a.

In Figure 7a, when the code point is in the first state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j ; DMRS sharing mode for 4 repeated transmissions is: DMRS sharing is not allowed.

When the code point is in the second state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j; 4 repeated transmissions The DMRS sharing mode is: Allow sharing of DMRS.

When the code point is in the third state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter j; 4 repeated transmissions The DMRS sharing mode is: Allow sharing of DMRS.

When the code point is in the fourth state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter j; 4 repeated transmissions The DMRS sharing mode is: DMRS is not allowed to be shared.

In another implementation of this scenario, the first field is only used to indicate one of the repetitive transmission mode and the DMRS sharing mode. Therefore, in this implementation, the DCI also includes a second field to indicate The other of the repetitive transmission mode and the DMRS sharing mode.

For ease of understanding, please refer to Figure 7b and Figure 7c. Figure 7b can be the structure of the first field, the first field is used to indicate the repetition pattern of repeated transmission; Figure 7b can be the structure of the second field, and the second field is used to indicate DMRS sharing mode for repeated transmission.

As shown in Figure 7b, when the code point of the first domain is in the first state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, according to The PDSCH of QCL parameter j.

When the code point of the first domain is in the second state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, and PDSCH according to QCL parameter i.

When the code point of the first domain is in the third state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, PDSCH according to QCL parameter j, and PDSCH according to QCL parameter i.

When the code point of the first domain is in the fourth state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, PDSCH according to QCL parameter i, and PDSCH according to QCL parameter j.

When the code point of the first domain is in the fifth state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter i, PDSCH according to QCL parameter i, PDSCH according to QCL parameter j, and PDSCH according to QCL parameter j.

When the code point of the first domain is in the sixth state, the transmission mode of 4 transmissions is shown as: PDSCH according to QCL parameter j, PDSCH according to QCL parameter j, PDSCH according to QCL parameter i, and PDSCH according to QCL parameter i.

As shown in Figure 7c, when the code point of the second domain is in the first state, that is, the code point is 0, the DMRS sharing mode for repeated transmission is: DMRS sharing is not allowed; when the code point of the second domain is in the second state, That is, when the code point is 1, the DMRS sharing mode for repeated transmission is: DMRS sharing is allowed.

It should be noted that the number of transmissions, the number of QCL parameters, the repetition mode, and the DMRS sharing mode in FIGS. 7a to 7c are only examples, and the above parameters are not limited accordingly.

Scenario 3: The first field is a transmission configuration indicator (Transmission Configuration Indicator, TCI) status indicator field.

In an implementation manner of this scenario, the TCI status indication field can jointly indicate the repetition mode of repeated transmission and the DMRS sharing mode. For details, refer to FIG. 8a.

In Figure 8a, when the code point of the TCI status indication field is in the first state, the transmission mode of 4 transmissions is shown as: transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter i, according to Transmission of QCL parameter j; the DMRS sharing mode for 4 repeated transmissions is: DMRS sharing is not allowed.

When the code point of the TCI status indication field is in the second state, the transmission mode of 4 transmissions is as follows: transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter i, transmission according to QCL parameter j ; DMRS sharing mode for 4 repetitive transmissions is: DMRS sharing is allowed.

When the code point of the TCI status indication field is in the third state, the transmission mode of 4 transmissions is shown as: transmission according to QCL parameter i, transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter j ; DMRS sharing mode for 4 repetitive transmissions is: DMRS sharing is allowed.

When the code point of the TCI status indication field is in the fourth state, the transmission mode of 4 transmissions is as follows: transmission according to QCL parameter i, transmission according to QCL parameter i, transmission according to QCL parameter j, and transmission according to QCL parameter j ; DMRS sharing mode for 4 repeated transmissions is: DMRS sharing is not allowed.

In Figure 8a, when the code point of the TCI status indication field is in the third state, since the DMRS sharing mode of 4 repeated transmissions is: DMRS sharing is allowed, the first two of the 4 transmissions are repeated according to QCL parameter i Transmission can share DMRS; the last two repeated transmissions according to QCL parameter j can share DMRS.

In another implementation manner of this scenario, the TCI status indication field is only used to indicate the repetition mode of repeated transmission. Therefore, in this implementation manner, the DCI further includes a second field for indicating the DMRS sharing mode of repeated transmission.

For ease of understanding, please refer to Fig. 8b and Fig. 8c. Fig. 8b can be the structure of the TCI state indicator domain, formula; Fig. 8b can be the structure of the second domain.

As shown in Figure 8b, when the code point of the TCI status indication field is in the first state, that is, when the code point of the TCI status indication field is 000, the transmission mode of 4 transmissions is shown as: transmission according to QCL parameter i, according to QCL parameter The transmission of j, the transmission according to QCL parameter i, the transmission according to QCL parameter j.

When the code point of the TCI status indication field is in the second state, that is, when the code point of the TCI status indication field is 001, the transmission mode of 4 transmissions is: transmission according to QCL parameter j, transmission according to QCL parameter i, according to QCL The transmission of parameter j is based on the transmission of QCL parameter i.

When the code point of the TCI status indication field is in the third state, that is, when the code point of the TCI status indication field is 010, the transmission mode of 4 transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter j, according to QCL The transmission of parameter j is based on the transmission of QCL parameter i.

When the code point of the TCI status indication field is in the fourth state, that is, when the code point of the TCI status indication field is 011, the transmission mode of 4 transmissions is as follows: transmission according to QCL parameter j, transmission according to QCL parameter i, according to QCL The transmission of parameter i is based on the transmission of QCL parameter j.

When the code point of the TCI status indication field is in the fifth state, that is, when the code point of the TCI status indication field is 100, the transmission mode of 4 transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter i, according to QCL The transmission of parameter j is based on the transmission of QCL parameter j.

When the code point of the TCI status indication field is in the sixth state, that is, when the code point of the TCI status indication field is 101, the transmission mode of 4 transmissions is shown as: transmission according to QCL parameter j, transmission according to QCL parameter j, according to QCL The transmission of parameter i is based on the transmission of QCL parameter i.

As shown in Figure 8c, when the code point of the second domain is in the first state, that is, the code point is 0, the DMRS sharing mode for repeated transmission is: DMRS sharing is not allowed; when the code point of the second domain is in the second state, That is, when the code point is 1, the DMRS sharing mode for repeated transmission is: DMRS sharing is allowed.

It should be noted that the number of transmissions, the number of QCL parameters, the repetition mode, and the DMRS sharing mode in FIGS. 8a to 8c are only examples, and the above parameters are not limited accordingly.

In addition, in the embodiment of the present disclosure, the second domain may also be: a DMRS port domain, a newly added domain, or a transmission configuration indication TCI status indication domain, but the second domain and the first domain are different domains.

Manifestation two

Optionally, the DCI includes a third field, and the third field is used to indicate a precoding mode of repeated transmission. In the embodiment of the present disclosure, the precoding mode is used to determine the precoding information for each transmission in repeated transmissions.

Optionally, the third field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a second reserved code point, and uses the second reserved code point The code point indicates the precoding mode. The related content of the second reserved code point can refer to the description of the first reserved code point in the foregoing content, which will not be repeated here. The second reserved code point may be referred to as a spare RI field.

To facilitate understanding, please refer to Figure 9 together.

In Figure 9, when the code point is in the first state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 1, Precoding used for the second transmission 2, Precoding used for the third transmission 3. Use Precoding for the fourth transmission 4.

When the code point is in the first state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 1, Precoding used for the second transmission 2, Precoding used for the third transmission 3, Precoding used for the fourth transmission 4 .

When the code point is in the second state, the precoding information for 4 repeated transmissions is: Precoding for the first transmission 4, Precoding for the second transmission 1, Precoding for the third transmission 2, Precoding for the fourth transmission 3 .

When the code point is in the third state, the precoding information for 4 repeated transmissions is: Precoding for the first transmission 3, Precoding for the second transmission 4, Precoding for the third transmission 1, and Precoding for the fourth transmission 2 .

When the code point is in the fourth state, the precoding information for 4 repeated transmissions is: the first transmission uses Precoding 2, the second transmission uses Precoding 3, the third transmission uses Precoding 4, and the fourth transmission uses Precoding 1 .

When the code point is in the fifth state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 1, Precoding used for the second transmission 2, Precoding used for the third transmission 1, Precoding used for the fourth transmission 2 .

When the code point is in the sixth state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 2, Precoding used for the second transmission 1, Precoding used for the third transmission 2, Precoding used for the fourth transmission 1 .

When the code point is in the seventh state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 1, Precoding used for the second transmission 1, Precoding used for the third transmission 2, Precoding used for the fourth transmission 2 .

When the code point is in the eighth state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 2, Precoding used for the second transmission 2, Precoding used for the third transmission 1, Precoding used for the fourth transmission 1 .

When the code point is in the ninth state, the precoding information for 4 repeated transmissions is: Precoding used for the first transmission 1, Precoding used for the second transmission 1, Precoding used for the third transmission 1, Precoding used for the fourth transmission 1 .

It should be noted that the number of transmissions and precoding information in FIG. 9 are only examples, and the foregoing parameters are not limited accordingly.

Manifestation three

Optionally, the DCI includes a fourth field, and the fourth field is used to indicate time-domain precoding granularity (Precoding Granularity) of repeated transmission.

In the embodiments of the present disclosure, the time-domain precoding granularity is used to determine the frequency of channel estimation for the same TRP (or QCL parameter). Exemplarily, if the time domain precoding granularity is 1, it means that channel estimation is performed for each transmission; if the time domain precoding granularity is 2, it means that joint channel estimation is performed every two transmissions; if the time domain precoding granularity is 3 , It means that the joint channel estimation is performed every three transmissions; if the time-domain precoding granularity is 4, it means that the joint channel estimation is performed every four transmissions, and so on.

Optionally, the fourth field is a TCI status indication field.

To facilitate understanding, please refer to Figure 10a and Figure 10b together. In Figure 10a and Figure 10b, time-domain precoding granularity (Precoding granularity).

In Fig. 10a, the TCI status indication field jointly indicates the repetition pattern and time domain precoding granularity of repeated transmission.

Specifically, when the code point of the TCI status indication field is in the first state, the transmission mode of 4 repeated transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter i, and according to QCL parameter The time-domain precoding granularity of j transmission and 4 repeated transmissions is 1.

When the code point of the TCI status indication field is in the second state, specifically 01, the transmission mode for 4 repeated transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter i, according to QCL Transmission of parameter j; the granularity of time-domain precoding for 4 repeated transmissions is 2. In this scenario, the first and third transmissions use the same precoding, and the second and fourth transmissions use the same precoding. Using the same precoding means that joint channel estimation can be performed, which is beneficial to improve the channel estimation performance.

When the code point of the TCI status indication field is in the third state, specifically 10, the transmission mode for 4 repeated transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter i, transmission according to QCL parameter j, according to QCL Transmission of parameter j; the granularity of time-domain precoding for 4 repeated transmissions is 2. In this scenario, the first and second transmissions use the same precoding, and the third and fourth transmissions use the same precoding.

When the code point of the TCI status indication field is in the fourth state, the transmission mode of 4 repeated transmissions is: transmission according to QCL parameter i, transmission according to QCL parameter i, transmission according to QCL parameter j, transmission according to QCL parameter j ; The time-domain precoding granularity of 4 repeated transmissions is 1.

In FIG. 10b, the TCI status indication field may only indicate the time-domain precoding granularity of repeated transmission.

As shown in Fig. 10b, when the code point of the TCI status indication field is in the first state, the time-domain precoding granularity of repeated transmission is 1 transmission, that is, the same precoding is used for each transmission.

When the code point of the TCI status indication domain is in the second state, the time-domain precoding granularity of repeated transmission is 2 transmissions, and the same precoding is used for every two transmissions.

When the code point of the TCI state indication field is in the third state, the time-domain precoding granularity of repeated transmission is 3 transmissions, and the same precoding is used for every three transmissions.

When the code point of the TCI status indication field is in the fourth state, the time-domain precoding granularity of repeated transmission is 4 transmissions, and the same precoding is used for every four transmissions.

It should be noted that the repetition pattern and the time-domain precoding granularity in FIG. 10a and FIG. 10b are only examples, and the specific manifestations of the above parameters are not limited accordingly.

Manifestation four

Optionally, the DCI includes a fifth field, and the fifth field is used to indicate a frequency domain resource offset value of repeated transmission.

To facilitate understanding, please refer to Figure 11 together. In FIG. 11, the fifth domain uses two-bit code points to indicate the frequency domain resource offset value.

As shown in Figure 11, when the code point is 00, the frequency domain resource offset value is: Floor (the number of radio bearers of the BWP/4), then the frequency domain resource of the nth transmission = the frequency of the n-1th transmission Domain resources + floor (number of RBs in BWP/4). Among them, the Floor function is a round-down function.

When the code point is 01, the frequency domain resource offset value is: Floor (the number of radio bearers of the BWP*2/4), then the frequency domain resource of the nth transmission = the frequency domain resource of the n-1th transmission + floor (Number of RBs in BWP*2/4).

When the code point is 10, the frequency domain resource offset value is: Floor (the number of radio bearers of BWP*3//4), then the frequency domain resource of the nth transmission = the frequency domain resource of the n-1th transmission + floor(BWP RB number*3/4).

When the code point is 11, the frequency domain resource offset value is 0, then the frequency domain resource of the nth transmission = the frequency domain resource of the n-1th transmission.

Wherein, n is an integer greater than 1. The above offset value is only an example, and the value of the offset value is not limited accordingly.

It should be noted that, during implementation, the frequency domain position of the first transmission in the repeated transmission is indicated by the DCI. In addition, if the frequency domain resource of the calculated QCL parameter of the nth transmission is offset and exceeds the maximum bandwidth of the BWP, a loopback operation is adopted to start mapping from the lowest radio bearer (RB) of the BWP.

Manifestation five

Optionally, the DCI includes a sixth field, and the sixth field is used to indicate a DMRS port for repeated transmission. Among them, the repeatedly transmitted DMRS port can be specifically understood as: the DMRS port of the physical shared channel that repeatedly transmits the corresponding TRP (or QCL parameter).

Optionally, in the case that the physical shared channel for repeated transmission according to the N QCL parameters uses the same time-frequency resource, the DMRS port for repeated transmission indicated by the sixth field is different; or,

In the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use different time domain resources or frequency domain resources, the DMRS ports for repeated transmission indicated by the sixth domain may be the same.

To facilitate understanding, please refer to Figure 12a to Figure 12c together.

In Figure 12a, the PDSCH received according to QCL parameter 1 and the PDSCH received according to QCL parameter 2 use the same time-frequency resources. Therefore, the PDSCH received according to QCL parameter 1 and the PDSCH received according to QCL parameter 2 need to use different DMRS window.

In FIG. 12b, the PDSCH received according to QCL parameter 1 and the PDSCH according to QCL parameter 2 use different frequency domain resources. Therefore, the PDSCH according to QCL parameter 1 and the PDSCH according to QCL parameter 2 can use the same DMRS window.

In Figure 12c, the PDSCH received according to QCL parameter 1 and the PDSCH received according to QCL parameter 2 use different time-frequency resources. Therefore, the PDSCH received according to QCL parameter 1 and the PDSCH received according to QCL parameter 2 can use the same DMRS window.

Optionally, the sixth field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a third reserved code point, and uses the third reserved code point The code point indicates the DMRS port. The relevant content of the third reserved code point can refer to the description of the first reserved code point in the foregoing content, which will not be repeated here.

To facilitate understanding, please refer to the specific structure of the DMRS port field shown in FIGS. 13a to 13d.

For the DMRS port domain shown in FIG. 13a to FIG. 13b, the antenna port (Antenna port(s)) is shown as: 1000+DMRS port (DMRS Port).

In addition, for the DMRS port field shown in FIG. 13a, the maximum length (Max Length) of the DMRS is 1, and the type of DMRS (DMRS-Type) is type 1. Before the RI is restricted, the number of bits required for the DMRS port domain is 4 bits. By restricting the RI, it can be reduced by 1 bit to 3 bits.

For the DMRS port field shown in FIG. 13b, the maximum length (Max Length) of the DMRS is 2, and the type of DMRS (DMRS-Type) is type 1. Before RI is restricted, the number of bits required for the DMRS port domain is 5 bits. By restricting RI, it can be reduced by 1 bit to 4 bits.

For the DMRS port field shown in FIG. 13c, the maximum length (Max Length) of the DMRS is 1, and the type of DMRS (DMRS-Type) is type 2. Before RI is restricted, the number of bits required for the DMRS port domain is 5 bits. By restricting the RI, it can be reduced by 1 bit to 3 bits.

For the DMRS port field shown in FIG. 13d, the maximum length (Max Length) of the DMRS is 2, and the type of DMRS (DMRS-Type) is type 2. Before the RI is restricted, the number of bits required for the DMRS port domain is 6 bits. By restricting the RI, it can be reduced by 1 bit to 5 bits.

It should be noted that the DMRS port field in FIGS. 13a to 13d is only an example, and therefore does not limit the specific structure of the DMRS port field. In addition, the DMRS ports in FIGS. 13a to 13d are only examples.

During implementation, optionally, the third reserved code point includes identification information of each QCL parameter of the N QCL parameters, and number information of N DMRS ports.

Optionally, the correspondence between the identification information of the QCL parameter and the number information of the DMRS port may be configured by the network side device. For example, the size order of the identification information index of the QCL parameter that the network side device can configure is related to the order of the number information of the DMRS port.

Exemplarily, assuming that the ascending order of the index of the identification information of the QCL parameter that the network side device can configure is positively correlated with the order of the number information of the DMRS port from first to last, if the QCL parameter i and QCL parameter j (i<j ), the network side device indicates to use the first dmrs port (denoted as DMRS port 0) and the second DMRS port (denoted as DMRS port 1), then, for the physical shared channel of QCL parameter i, use DMRS port 0, QCL parameter The physical shared channel of j uses DMRS port 1.

It should be noted that the various optional implementation manners introduced in the embodiments of the present disclosure can be implemented in combination with each other or can be implemented separately, and the embodiments of the present disclosure are not limited.

In addition, when the first, third, fourth, fifth, or fifth domains in the embodiment of the present disclosure are the same domain, the domain may use different code points to indicate different transmission parameters of repeated transmission.

Refer to FIG. 14, which is the second flowchart of the repeated transmission method provided by the embodiment of the present disclosure. The repeated transmission method shown in FIG. 14 is applied to the network side device.

As shown in FIG. 14, the repeated transmission method applied to the network side device may include the following steps:

Step 1401: Send downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.

Optionally, the transmission parameters include at least one of the following: repetition mode, demodulation reference signal DMRS sharing mode, DMRS port, precoding mode, time domain precoding granularity, and frequency domain resource offset value.

Optionally, the DCI includes a first field, and the first field is used to indicate at least one of a repetition mode of repeated transmission and a DMRS sharing mode.

Optionally, in the case that the first field is used to indicate one of the repetition mode and the DMRS sharing mode, the DCI further includes a second field, and the second field is used to indicate the The repetitive pattern and the other of the DMRS sharing patterns.

Optionally, if the first domain is a DMRS port domain, if the transmission layer of the physical shared channel is 1, the DMRS port domain includes a first reserved code point, and the first reserved code point is used. The reserved code points indicate the repetition mode of repeated transmission and the DMRS sharing mode.

Optionally, the DCI includes a third field, and the third field is used to indicate a precoding mode of repeated transmission.

Optionally, the third field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a second reserved code point, and uses the second reserved code point The code point indicates the precoding mode.

Optionally, the DCI includes a fourth field, and the fourth field is used to indicate time-domain precoding granularity of repeated transmission.

Optionally, the fourth field is a TCI status indication field.

Optionally, the DCI includes a sixth field, and the sixth field is used to indicate a DMRS port for repeated transmission.

Optionally, in the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use the same time-frequency resources, the DMRS ports indicated by the sixth field are different; or,

In the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use different time domain resources or frequency domain resources, the DMRS ports indicated by the sixth domain are the same.

Optionally, the sixth field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a third reserved code point, and uses the third reserved code point The code point indicates the DMRS port.

Optionally, the third reserved code point includes identification information of each of the N QCL parameters, and number information of the N DMRS ports.

In addition, this embodiment serves as an embodiment formula of a network side device corresponding to the foregoing method embodiment. Therefore, reference may be made to the relevant description in the foregoing method embodiment applied to a terminal, and the same beneficial effects can be achieved. In order to avoid repeating the description, it will not be repeated here.

In the repeated transmission method of this embodiment, the network side device sends downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1. In this way, the network-side device can assist the terminal to obtain the transmission parameters for repeated transmission of the physical shared channel according to the N quasi-co-located QCL parameters, and then can perform physical sharing based on the N QCL parameters and the acquired transmission parameters for the repeated transmission Repeated transmission of the channel can improve the reliability of data transmission.

The embodiments of the present disclosure include the following innovation and protection points:

The embodiments of the present disclosure design a multi-TRP (each TRP corresponds to 1 QCL parameter) transmission scheme, which schedules multiple PDSCHs or PUSCHs for one DCI, and multiple PDSCH/PUSCHs come from multiple TRPs (correspond to multiple QCL parameters) .

The UE receives control information from one TRP, and receives repeated PDSCHs from multiple TRPs (corresponding to multiple QCL parameters).

1. Rank is limited to 1, by defining redundant bits or new fields of DMRS port fields to indicate repeated patterns and DMRS sharing modes and precoding modes.

2. Define the TCI state indication field to indicate the mode of repeated transmission of PDSCHs from multiple TRPs (corresponding to multiple QCL parameters), time domain precoding granularity, etc.

The present disclosure has the following beneficial effects:

The network side device can assist the terminal to obtain PDSCH control information transmitted by multiple TRPs (corresponding to multiple QCL parameters), which is beneficial to improve the reliability of data transmission.

Refer to FIG. 15, which is one of the structural diagrams of the terminal provided by the embodiment of the present disclosure. As shown in FIG. 15, the terminal 1500 includes:

The receiving module 1501 is configured to receive downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1;

The transmission module 1502 is configured to perform repeated transmission of the physical shared channel according to the DCI and the N QCL parameters.

Optionally, if the first domain is a DMRS port domain, if the transmission layer of the physical shared channel is 1, the DMRS port domain includes a first reserved code point, and the first reserved code point is used. The reserved code points indicate the repetition mode and the DMRS sharing mode.

Optionally, the fourth field is a TCI status indication field.

Optionally, the third reserved code point includes identification information of each QCL parameter of the N QCL parameters, and number information of the N DMRS ports.

The terminal 1500 can implement various processes implemented by the terminal in the method embodiment of the present disclosure and achieve the same beneficial effects. To avoid repetition, details are not described herein again.

Refer to FIG. 16, which is one of the structural diagrams of the network side device provided by the embodiment of the present disclosure. As shown in FIG. 16, the network side device 1600 includes:

The sending module 1601 is configured to send downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi-co-located QCL parameters, where N is an integer greater than 1.

Optionally, the fourth field is a TCI status indication field.

The network side device 1600 can implement the various processes implemented by the network side device in the method embodiment of the present disclosure and achieve the same beneficial effects. To avoid repetition, details are not described herein again.

Please refer to FIG. 17. FIG. 17 is a second structural diagram of a terminal provided by an embodiment of the present disclosure. The terminal may be a schematic diagram of a hardware structure of a terminal that implements various embodiments of the present disclosure. As shown in FIG. 17, the terminal 1700 includes but is not limited to: a radio frequency unit 1701, a network module 1702, an audio output unit 1703, an input unit 1704, a sensor 1705, a display unit 1706, a user input unit 1707, an interface unit 1708, a memory 1709, The device 1710, and the power supply 1711 and other components. Those skilled in the art can understand that the terminal structure shown in FIG. 17 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine some components, or arrange different components. In the embodiments of the present disclosure, terminals include, but are not limited to, mobile phones, tablet computers, notebook computers, palmtop computers, vehicle-mounted terminals, wearable devices, and pedometers.

Among them, the radio frequency unit 1701 is used for:

Optionally, the fourth field is a TCI status indication field.

It should be noted that the foregoing terminal 1700 in this embodiment can implement various processes in the method embodiments in the embodiments of the present disclosure and achieve the same beneficial effects. To avoid repetition, details are not described herein again.

It should be understood that, in the embodiment of the present disclosure, the radio frequency unit 1701 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, the downlink data from the base station is received and sent to the processor 1710 for processing; Uplink data is sent to the base station. Generally, the radio frequency unit 1701 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 1701 can also communicate with the network and other devices through a wireless communication system.

The terminal provides users with wireless broadband Internet access through the network module 1702, such as helping users to send and receive emails, browse web pages, and access streaming media.

The audio output unit 1703 may convert the audio data received by the radio frequency unit 1701 or the network module 1702 or stored in the memory 1709 into audio signals and output them as sounds. Moreover, the audio output unit 1703 may also provide audio output related to a specific function performed by the terminal 1700 (for example, call signal reception sound, message reception sound, etc.). The audio output unit 1703 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1704 is used to receive audio or video signals. The input unit 1704 may include a graphics processing unit (GPU) 17041 and a microphone 17042, and the graphics processor 17041 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. Data is processed. The processed image frame can be displayed on the display unit 1706. The image frame processed by the graphics processor 17041 can be stored in the memory 1709 (or other storage medium) or sent via the radio frequency unit 1701 or the network module 1702. The microphone 17042 can receive sound, and can process such sound into audio data. The processed audio data can be converted into a format that can be sent to a mobile communication base station via the radio frequency unit 1701 in the case of a telephone call mode for output.

The terminal 1700 also includes at least one sensor 1705, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor. The ambient light sensor can adjust the brightness of the display panel 17061 according to the brightness of the ambient light. The proximity sensor can close the display panel 17061 and/or when the terminal 1700 is moved to the ear. Or backlight. As a kind of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal posture (such as horizontal and vertical screen switching, related games, Magnetometer attitude calibration), vibration recognition related functions (such as pedometer, percussion), etc.; the sensor 1705 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.

The display unit 1706 is used to display information input by the user or information provided to the user. The display unit 1706 may include a display panel 17061, and the display panel 17061 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.

The user input unit 1707 may be used to receive inputted numeric or character information, and generate key signal input related to user settings and function control of the terminal. Specifically, the user input unit 1707 includes a touch panel 17071 and other input devices 17072. The touch panel 17071, also known as a touch screen, can collect user touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 17071 or near the touch panel 17071. operating). The touch panel 17071 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 1710, the command sent by the processor 1710 is received and executed. In addition, the touch panel 17071 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 17071, the user input unit 1707 may also include other input devices 17072. Specifically, other input devices 17072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.

Further, the touch panel 17071 can cover the display panel 17061. When the touch panel 17071 detects a touch operation on or near it, it transmits it to the processor 1710 to determine the type of touch event, and then the processor 1710 determines the type of touch event according to the touch. The type of event provides corresponding visual output on the display panel 17061. Although in FIG. 17, the touch panel 17071 and the display panel 17061 are used as two independent components to realize the input and output functions of the terminal, in some embodiments, the touch panel 17071 and the display panel 17061 may be integrated. Realize the input and output functions of the terminal, which are not limited here.

The interface unit 1708 is an interface for connecting an external device and the terminal 1700. For example, the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc. The interface unit 1708 can be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 1700 or can be used to communicate between the terminal 1700 and the external device. Transfer data between.

The memory 1709 can be used to store software programs and various data. The memory 1709 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of mobile phones. In addition, the memory 1709 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 1710 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. It executes by running or executing software programs and/or modules stored in the memory 1709, and calling data stored in the memory 1709. Various functions of the terminal and processing data, so as to monitor the terminal as a whole. The processor 1710 may include one or more processing units; optionally, the processor 1710 may integrate an application processor and a modem processor. The application processor mainly processes the operating system, user interface, and application programs, etc. The adjustment processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 1710.

The terminal 1700 may also include a power source 1711 (such as a battery) for supplying power to various components. Optionally, the power source 1711 may be logically connected to the processor 1710 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. And other functions.

In addition, the terminal 1700 includes some functional modules not shown, which will not be repeated here.

Optionally, an embodiment of the present disclosure further provides a terminal, including a processor 1710, a memory 1709, and a computer program stored on the memory 1709 and capable of running on the processor 1710. When the computer program is executed by the processor 1710, Each process of the foregoing repeated transmission method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, details are not repeated here.

Referring to FIG. 18, FIG. 18 is the second structural diagram of the network side device provided by the embodiment of the present disclosure. As shown in FIG. 18, the network side device 1800 includes: a processor 1801, a memory 1802, a user interface 1803, a transceiver 1804, and a bus interface.

Wherein, in the embodiment of the present disclosure, the network side device 1800 further includes: a computer program stored in the memory 1802 and capable of running on the processor 1801, and the computer program is executed by the processor 1801 to implement the following steps:

Optionally, the fourth field is a TCI status indication field.

In FIG. 18, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1801 and various circuits of the memory represented by the memory 1802 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further description will be given herein. The bus interface provides the interface. The transceiver 1804 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 1803 may also be an interface that can externally and internally connect the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 1801 is responsible for managing the bus architecture and general processing, and the memory 1802 can store data used by the processor 2601 when performing operations.

The network-side device 1800 can implement the various processes implemented by the network-side device in the foregoing method embodiments. To avoid repetition, details are not described herein again.

The embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, each process of the above repeated transmission method embodiment is realized, and the same technology can be achieved. The effect, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk, etc.

It should be noted that, in this article, the terms "including", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, It also includes other elements not explicitly listed, or elements inherent to the process, method, article, or device. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article or device that includes the element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, hardware can also be used, but in many cases the former is better.的实施方式。 Based on this understanding, the technical solution of the present disclosure can be embodied in the form of a software product in essence or the part that contributes to the related technology. The computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk). ) Includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present disclosure, many forms can be made without departing from the purpose of the present disclosure and the scope of protection of the claims, all of which fall within the protection of the present disclosure.

Claims

A repeated transmission method, applied to a terminal, and the method includes:

Receiving downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1;

According to the DCI and the N QCL parameters, repeat transmission of the physical shared channel.
The method according to claim 1, wherein the transmission parameters include at least one of the following: repetition mode, demodulation reference signal DMRS sharing mode, DMRS port, precoding mode, time domain precoding granularity, and frequency domain resource offset value.
The method according to claim 1, wherein the DCI includes a first field, and the first field is used to indicate at least one of a repetition pattern of repeated transmission and a DMRS sharing pattern.
The method according to claim 3, wherein, when the first field is used to indicate one of the repetition pattern and the DMRS sharing mode, the DCI further includes a second field, and the first field The second field is used to indicate the other of the repetition mode and the DMRS sharing mode.
The method according to claim 3, wherein the first field is: a DMRS port field, a newly added field, or a transmission configuration indicator TCI status indicator field.
The method according to claim 5, wherein, if the first field is a DMRS port field, in a case where the transmission layer of the physical shared channel is 1, the DMRS port field includes a first reserved code point , And use the first reserved code point to indicate the repetition mode and the DMRS sharing mode.
The method according to claim 1, wherein the DCI includes a third field, and the third field is used to indicate a precoding mode of repeated transmission.
The method according to claim 7, wherein the third field is a DMRS port field; in the case that the transmission layer of the physical shared channel is 1, the DMRS port field includes a second reserved code point, and Using the second reserved code point to indicate the precoding mode.
The method according to claim 1, wherein the DCI includes a fourth field, and the fourth field is used to indicate a time-domain precoding granularity of repeated transmission.
The method according to claim 9, wherein the fourth field is a TCI status indication field.
The method according to claim 1, wherein the DCI includes a fifth field, and the fifth field is used to indicate a frequency domain resource offset value of repeated transmission.
The method according to claim 1, wherein the DCI includes a sixth field, and the sixth field is used to indicate a DMRS port for repeated transmission.
The method according to claim 12, wherein the DMRS port indicated by the sixth field is different when the physical shared channel for repeated transmission according to the N QCL parameters uses the same time-frequency resource; or ,

In the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use different time domain resources or frequency domain resources, the DMRS ports indicated by the sixth domain are the same.
The method according to claim 12, wherein the sixth field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a third reserved code point, and The third reserved code point is used to indicate the DMRS port.
The method according to claim 14, wherein the third reserved code point includes identification information of each QCL parameter of the N QCL parameters, and number information of the N DMRS ports.
A repeated transmission method, applied to a network side device, and the method includes:

Sending downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.
The method according to claim 16, wherein the transmission parameters include at least one of the following: repetition mode, demodulation reference signal DMRS sharing mode, DMRS port, precoding mode, time domain precoding granularity, and frequency domain resource offset value.
The method according to claim 16, wherein the DCI includes a first field, and the first field is used to indicate at least one of a repetition pattern of repeated transmission and a DMRS sharing pattern.
The method according to claim 18, wherein, in the case that the first field is used to indicate one of the repetition pattern and the DMRS sharing mode, the DCI further includes a second field, and the first field The second field is used to indicate the other of the repetition mode and the DMRS sharing mode.
The method according to claim 18, wherein the first field is: a DMRS port field, a newly added field, or a transmission configuration indicator TCI status indicator field.
The method according to claim 20, wherein, if the first domain is a DMRS port domain, when the transmission layer of the physical shared channel is 1, the DMRS port domain includes a first reserved code point , And use the first reserved code point to indicate the repetition mode and the DMRS sharing mode.
The method according to claim 16, wherein the DCI includes a third field, and the third field is used to indicate a precoding mode of repeated transmission.
The method according to claim 22, wherein the third field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a second reserved code point, and Using the second reserved code point to indicate the precoding mode.
The method according to claim 16, wherein the DCI includes a fourth field, and the fourth field is used to indicate a time-domain precoding granularity of repeated transmission.
The method according to claim 24, wherein the fourth field is a TCI status indication field.
The method according to claim 16, wherein the DCI includes a fifth field, and the fifth field is used to indicate a frequency domain resource offset value of repeated transmission.
The method according to claim 16, wherein the DCI includes a sixth field, and the sixth field is used to indicate a DMRS port for repeated transmission.
The method according to claim 27, wherein, in the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use the same time-frequency resources, the DMRS ports indicated by the sixth field are different; or ,

In the case that the physical shared channels that are repeatedly transmitted according to the N QCL parameters use different time domain resources or frequency domain resources, the DMRS ports indicated by the sixth domain are the same.
The method according to claim 27, wherein the sixth field is a DMRS port field; when the transmission layer of the physical shared channel is 1, the DMRS port field includes a third reserved code point, and The third reserved code point is used to indicate the DMRS port.
The method according to claim 29, wherein the third reserved code point includes identification information of each QCL parameter of the N QCL parameters, and number information of N DMRS ports.
A terminal, the terminal includes:

A receiving module, configured to receive downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of a physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1;

The transmission module is configured to perform repeated transmission of the physical shared channel according to the DCI and the N QCL parameters.
A network side device, the network side device includes:

The sending module is configured to send downlink control information DCI, where the DCI is used to instruct the terminal to perform transmission parameters for repeated transmission of the physical shared channel according to N quasi co-located QCL parameters, where N is an integer greater than 1.
A terminal, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any one of claims 1 to 15 Repeat the steps described in the transmission method.
A terminal, comprising a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any one of claims 16 to 30 Repeat the steps described in the transmission method.
A computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the repeated transmission method according to any one of claims 1 to 15 are realized, Or, the steps of the repeated transmission method according to any one of claims 16 to 30.