WO2023184245A1

WO2023184245A1 - Method and apparatus for determining relationship between ptrs port and dmrs port, and medium and product

Info

Publication number: WO2023184245A1
Application number: PCT/CN2022/084107
Authority: WO
Inventors: 高雪媛
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2023-10-05
Also published as: CN117693916A; WO2023185490A1

Abstract

A method and apparatus for determining a relationship between a PTRS port and a DMRS port, and a medium and a product, which belong to the field of communications. The method comprises: when a target layer mapping scheme corresponding to n CWs is used, determining an association relationship between an uplink PTRS port and an uplink DMRS port on the basis of DCI, wherein the maximum number of uplink DMRS ports is 8, the value of n is 1 or 2, and the target layer mapping scheme is a layer mapping scheme of type 1 or a layer mapping scheme of type 2.

Description

Methods, devices, media and products for determining the relationship between PTRS ports and DMRS ports

Technical field

The present disclosure relates to the field of communications, and in particular to a method, device, medium and product for determining the relationship between a PTRS port and a DMRS port.

Background technique

In the 5G New Radio (NR) system, a Phase Tracking Reference Signal (PTRS) is designed, which is used for the estimation of Common Phase Error (CPE).

For NR uplink transmission, the communication protocol only supports transmission of up to 4 layers. Therefore, during the NR uplink transmission process, the user terminal (User Equipment, UE) adopts a layer mapping scheme of 1 code word (CW) to layers 1 to 4; for the above layer mapping scheme, the UE starts from 4 uplink Determine one or two uplink DMRS ports associated with the uplink PTRS port among the DMRS ports, and send Demodulation Reference Signal (DMRS) through up to 4 antenna ports.

Contents of the invention

Embodiments of the present disclosure provide a method, device, medium and product for determining the relationship between a PTRS port and a DMRS port. The technical solutions are as follows:

According to an aspect of an embodiment of the present disclosure, a method for determining a relationship between a PTRS port and a DMRS port is provided. The method is executed by a terminal, and the method includes:

In the case of using the target layer mapping scheme corresponding to n codewords, determine the association between the uplink PTRS port and the uplink DMRS port based on DCI;

Wherein, the maximum number of uplink DMRS ports is 8; the value of n is 1 or 2; and the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.

According to an aspect of an embodiment of the present disclosure, a method for determining a relationship between a PTRS port and a DMRS port is provided. The method is performed by a network device. The method includes:

Send downlink control information to the terminal, where the downlink control information is used to indicate the association between the uplink PTRS port and the uplink DMRS port when the terminal adopts a target layer mapping scheme corresponding to n codewords;

According to another aspect of an embodiment of the present disclosure, a device for determining a relationship between a PTRS port and a DMRS port is provided, and the device includes:

The first processing module is configured to determine the association between the uplink PTRS port and the uplink DMRS port based on DCI when using a target layer mapping scheme corresponding to n CWs;

The second sending module is configured to send downlink control information to the terminal, where the downlink control information is used to instruct the terminal to use the target layer mapping scheme corresponding to n codewords, between the uplink PTRS port and the uplink DMRS port. connection relation;

According to another aspect of an embodiment of the present disclosure, a terminal is provided, where the terminal includes:

processor;

a transceiver coupled to said processor;

Wherein, the processor is configured to load and execute executable instructions to implement the method of determining the relationship between the PTRS port and the DMRS port as described in the above aspects.

According to another aspect of an embodiment of the present disclosure, a network device is provided, where the network device includes:

processor;

a transceiver coupled to said processor;

According to another aspect of the embodiments of the present disclosure, a computer-readable storage medium is provided. The computer-readable storage medium stores at least one instruction, at least a program, a code set or an instruction set, and the at least one instruction, The at least one program, the code set or the instruction set is loaded and executed by the processor to implement the method of determining the relationship between the PTRS port and the DMRS port as described in the above aspects.

According to another aspect of embodiments of the present disclosure, a computer program product (or computer program) is provided, the computer program product (or computer program) including computer instructions stored in a computer-readable storage medium; The processor of the computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device performs the determination of the distance between the PTRS port and the DMRS port as described in the above aspects. relationship approach.

According to another aspect of an embodiment of the present disclosure, a chip is provided. The chip includes editable logic circuits and/or program instructions. When the chip is run, it is used to implement the determination of the PTRS port and the PTRS port as described in the above aspects. Method of relationship between DMRS ports.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects:

In the above method of determining the relationship between the PTRS port and the DMRS port, the terminal determines the uplink PTRS port associated with the uplink PTRS port from up to 8 uplink DMRS ports based on the downlink control information using the target layer mapping scheme corresponding to n codewords. Uplink DMRS port, this method is used to support the use of up to 8 antenna ports under different layer mapping schemes. The related functions of the uplink PTRS port and the uplink DMRS port are implemented. For example, it is used to support the terminal to use 8 antennas under different layer mapping schemes. The uplink PTRS port and the uplink DMRS port corresponding to the port perform common phase error estimation.

It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only, and do not limit the present disclosure.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments will be briefly introduced below. 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 can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a block diagram of a communication system according to an exemplary embodiment;

Figure 2 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to an exemplary embodiment;

Figure 3 is a schematic diagram of mapping between codewords and transmission layers according to an exemplary embodiment;

Figure 4 is a schematic diagram of mapping between codewords and transmission layers according to another exemplary embodiment;

Figure 5 is a schematic diagram of mapping between codewords and transmission layers according to another exemplary embodiment;

Figure 6 is a schematic diagram of mapping between codewords and transmission layers according to another exemplary embodiment;

Figure 7 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 8 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 9 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 10 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 11 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 12 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 13 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 14 is a flow chart of a method for determining the relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 15 is a block diagram of a device for determining a relationship between a PTRS port and a DMRS port according to an exemplary embodiment;

Figure 16 is a block diagram of a device for determining a relationship between a PTRS port and a DMRS port according to another exemplary embodiment;

Figure 17 is a schematic structural diagram of a terminal according to an exemplary embodiment;

Figure 18 is a schematic structural diagram of a network device according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of embodiments of the present disclosure as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the embodiments of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to", as used herein the word "in response to" also Can be interpreted as "in the case of".

For the purpose of simplicity and ease of understanding, this article uses the terms "greater than" or "less than" when characterizing the size relationship. However, those skilled in the art can understand that the term “greater than” also encompasses the meaning of “greater than or equal to”, and “less than” also encompasses the meaning of “less than or equal to”.

Figure 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure. The communication system may include: an access network 12 and a user terminal 14.

The access network 12 includes several network devices 120 . Network equipment (also called access network equipment) 120 may be a base station, which is a device deployed in the access network to provide wireless communication functions for user terminals (referred to as "terminals") 14. Base stations can include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different wireless access technologies, the names of equipment with base station functions may be different. For example, in the Long Term Evolution (LTE) system, it is called eNodeB or eNB; in 5G NR (New Radio (new air interface) system, it is called gNodeB or gNB. As communications technology evolves, the description "base station" may change. For convenience of description in the embodiments of the present disclosure, the above-mentioned devices that provide wireless communication functions for the user terminal 14 are collectively referred to as network equipment. Optionally, the communication interface between network devices 120 is an Xn interface.

The user terminal 14 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to wireless modems, as well as various forms of user equipment, mobile stations (Mobile Station, MS) , terminal device (terminal device) and so on. For convenience of description, the devices mentioned above are collectively referred to as user terminals. The network device 120 and the user terminal 14 communicate with each other through some air interface technology, such as the Uu interface. Optionally, the user terminal 14 supports performing the small data transmission process in an inactive state.

For example, there are two communication scenarios between the network device 120 and the user terminal 14: an uplink communication scenario and a downlink communication scenario. Among them, uplink communication refers to sending signals to the network device 120; downlink communication refers to sending signals to the user terminal 14.

The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, evolution system of NR system, LTE on unlicensed frequency band (LTE-based access to Unlicensed spectrum, LTE-U) system, NR-U system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), next-generation communication systems or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication and Vehicle to Everything (V2X) systems, etc. Embodiments of the present disclosure may also be applied to these communication systems.

Figure 2 shows a flow chart of a method for determining the relationship between a PTRS port and a DMRS port provided by an exemplary embodiment of the present disclosure. The method is applied to the terminal of the communication system shown in Figure 1. The method includes:

Step 210: When using the target layer mapping scheme corresponding to n codewords, determine the association between the uplink PTRS port and the uplink DMRS port based on the downlink control information; wherein, the maximum number of uplink DMRS ports is 8; n The value is 1 or 2; the target layer mapping scheme is a type 1 layer mapping scheme, or a type 2 layer mapping scheme.

Exemplarily, the above-mentioned layer mapping scenarios for determining the association between the uplink PTRS port and the uplink DMRS port include any of the following:

Type 1 layer mapping scheme corresponding to 1 codeword;

Type 2 layer mapping scheme corresponding to 1 codeword;

Type 1 layer mapping scheme corresponding to 2 codewords;

Type 2 layer mapping scheme corresponding to 2 codewords.

Type 1 layer mapping scheme:

Taking the maximum number of total transmission layers as 8 layers as an example, as shown in Figure 3, the type 1 layer mapping scheme includes 8 layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the layer mapping scheme of type 1, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4. The two codewords include the first codeword and the second codeword; the first codeword After layer mapping, it corresponds to the first transmission layer number, and after layer mapping, the second codeword corresponds to the second transmission layer number; under the type 1 layer mapping scheme, the layer between the first transmission layer number and the second transmission layer number The number difference is 0 or 1, and the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8. For example, the type 1 layer mapping scheme corresponding to one codeword (including CW0) includes the following four types:

·CW0 is mapped to 1 transport layer;

For example, CW0 is mapped to transport layer 1, and the total number of transport layers is 1.

·CW0 is mapped to 2 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, and the total number of transport layers is 2.

·CW0 is mapped to 3 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, and the total number of transport layers is 3.

·CW0 is mapped to 4 transport layers;

For example, CW0 is mapped to transport layers 1 to 4, and the total number of transport layers is 4.

The type 1 layer mapping scheme corresponding to 2 codewords (including CW0 and CW1) includes the following 4 types:

·CW0 is mapped to 2 transport layers, and CW1 is mapped to 3 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 5, and the total number of transport layers is 5.

·CW0 is mapped to 3 transport layers, CW1 is mapped to 3 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 6, and the total number of transport layers is 5.

·CW0 is mapped to 3 transport layers, CW1 is mapped to 4 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 7, and the total number of transport layers is 5.

·CW0 is mapped to 4 transport layers, and CW1 is mapped to 4 transport layers.

For example, CW0 is mapped to transport layers 1 to 4, CW1 is mapped to transport layers 5 to 8, and the total number of transport layers is 8.

Type 2 layer mapping scheme:

Taking the maximum number of total transmission layers as 8 as an example, as shown in Figure 4, the type 2 layer mapping scheme includes 16 layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the type 2 layer mapping scheme, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4.

For example, as shown in Figure 4, the type 2 layer mapping scheme corresponding to one codeword (including CW0) includes the following four types:

·CW0 is mapped to 1 transport layer;

·CW0 is mapped to 2 transport layers;

·CW0 is mapped to 3 transport layers;

·CW0 is mapped to 4 transport layers;

The two codewords include the first codeword and the second codeword; the first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword corresponds to the second transmission layer number after layer mapping; in the layer of type 2 Under the mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

It can be seen from the above description of the type 1 layer mapping scheme that the difference between the first transmission layer number and the second transmission layer number in the type 1 layer mapping scheme is zero or one, and the first transmission layer number of the type 2 layer mapping scheme The maximum layer number difference between the layer number and the second transmission layer number is allowed to be greater than 1. It can be seen that the type 2 layer mapping scheme is more flexible than the type 1 layer mapping scheme. Taking the maximum number of total transmission layers as 8 as an example, the layer number difference between the first transmission layer number and the second transmission layer number in the type 2 layer mapping scheme can be any value from zero to six. . For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 7, the total number of transport layers is 8, and the layer number difference between the first transport layer number and the second transport layer number is six.

Optionally, the type 2 layer mapping scheme includes at least one of the following schemes:

·Supports the transmission of two codewords for layer 5 to layer 8 transmission;

or,

·Supports the transmission of two codewords for transmission above layer 4 (including layer 4);

or,

·Supports the transmission of two codewords for transmission above layer 2.

The layer mapping scheme for type 2 supports the scheme of transmitting two codewords for the transmission of layers 5 to 8.

As shown in Figure 4, when the type 2 layer mapping scheme supports the transmission of two codewords for the transmission of layers 5 to 8, the type 2 layer mapping scheme corresponding to the two codewords (including CW0 and CW1) includes the following 12 kind:

·CW0 is mapped to 1 transport layer, CW1 is mapped to 4 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 5, and the total number of transport layers is 5.

·CW0 is mapped to 2 transport layers, and CW1 is mapped to 3 transport layers;

·CW0 is mapped to 1 transport layer, CW1 is mapped to 5 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 6, and the total number of transport layers is 6.

·CW0 is mapped to 2 transport layers, and CW1 is mapped to 4 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 6, and the total number of transport layers is 6.

·CW0 is mapped to 3 transport layers, CW1 is mapped to 3 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 6, and the total number of transport layers is 6.

·CW0 is mapped to 1 transport layer, and CW1 is mapped to 6 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 7, and the total number of transport layers is 7.

·CW0 is mapped to 2 transport layers, and CW1 is mapped to 5 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 7, and the total number of transport layers is 7.

·CW0 is mapped to 3 transport layers, CW1 is mapped to 4 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 7, and the total number of transport layers is 7.

·CW0 is mapped to 1 transport layer and CW1 is mapped to 7 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 8, and the total number of transport layers is 8.

·CW0 is mapped to 2 transport layers, and CW1 is mapped to 6 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 to 8, and the total number of transport layers is 8.

·CW0 is mapped to 3 transport layers, and CW1 is mapped to 5 transport layers;

For example, CW0 is mapped to transport layers 1 to 3, CW1 is mapped to transport layers 4 to 8, and the total number of transport layers is 8.

·CW0 is mapped to 4 transport layers, and CW1 is mapped to 4 transport layers.

The layer mapping scheme for type 2 supports the scheme of transmitting two codewords for the transmission of 4 or more layers (including 4 layers).

As shown in Figure 5, when the Type 2 layer mapping scheme supports the transmission of two codewords for the transmission of layers 4 to 8, the Type 2 layer mapping scheme corresponding to the two codewords (including CW0 and CW1) is shown in Figure 4 On the basis of, it also includes the following 2 types:

·CW0 is mapped to 1 transport layer, CW1 is mapped to 3 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 4, and the total number of transport layers is 4.

·CW0 is mapped to 2 transport layers, CW1 is mapped to 2 transport layers;

For example, CW0 is mapped to transport layers 1 and 2, CW1 is mapped to transport layers 3 and 4, and the total number of transport layers is 4.

In the layer mapping scheme for type 2, the scheme of transmitting two codewords is supported for transmission above layer 2.

As shown in Figure 6, when the type 2 layer mapping scheme supports the transmission of two codewords for the transmission of layers 2 to 8, the type 2 layer mapping scheme corresponding to the two codewords (including CW0 and CW1) is shown in Figure 4 On the basis of, it also includes the following 4 types:

·CW0 is mapped to 1 transport layer, CW1 is mapped to 1 transport layer;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layer 2, and the total number of transport layers is 2.

·CW0 is mapped to 1 transport layer, CW1 is mapped to 2 transport layers;

For example, CW0 is mapped to transport layer 1, CW1 is mapped to transport layers 2 to 3, and the total number of transport layers is 3.

·CW0 is mapped to 1 transport layer, CW1 is mapped to 3 transport layers;

·CW0 is mapped to 2 transport layers, CW1 is mapped to 2 transport layers;

In the above different layer mapping scenarios, the terminal is allocated correspondingly from the physical uplink shared channel (Physical Uplink SharedCHannel, PUSCH)/physical uplink control channel (Physical Uplink Control CHannel, PUCCH) based on the downlink control information (DCI). Among the maximum 8 upstream DMRS ports, determine one or two upstream DMRS ports associated with the upstream PTRS port.

Exemplarily, the terminal responds that the number of uplink PTRS ports is 1, and based on the indication of the information field in the downlink control information, determines an uplink DMRS associated with the uplink PTRS port from up to 8 uplink DMRS ports corresponding to the PUSCH allocation. port.

Exemplarily, the terminal responds that the number of uplink PTRS ports is 2, and based on the indication of the information field in the downlink control information, determines the first uplink PTRS port associated with the first uplink PTRS port from the maximum 8 uplink DMRS ports allocated corresponding to the PUSCH. An uplink DMRS port, and a second uplink DMRS port associated with the second uplink PTRS port.

Among them, the second uplink PTRS port refers to the other one of the two uplink PTRS ports except the first uplink PTRS port; the second uplink DMRS port refers to the other one of the up to 8 uplink DMRS ports except the first uplink DMRS port. one.

Optionally, the above-mentioned up to 8 uplink DMRS ports are allocated to the terminal by the network device. For example, the network device allocates and uses all or part of the uplink DMRS ports for the terminal. For example, there are 8 uplink DMRS ports that can be allocated by network equipment, and the network equipment allocates some or all of the 8 uplink DMRS ports to the terminal; there are 12 uplink DMRS ports that can be allocated by the network equipment, and the network equipment allocates them to the terminal. Use some of the 12 upstream DMRS ports. Taking the terminal as an example of allocating and using 8 uplink DMRS ports, the network device allocates and uses all 8 uplink DMRS ports for the terminal; or, the network device allocates and uses port 1, port 3, and port among the 8 uplink DMRS ports for the terminal. 5 and port 7; or, the network equipment allocates the terminal to use port 0 to port 7 among the 12 uplink DMRS ports; or, the network equipment allocates the terminal to use port 0, port 2, and port among the 12 uplink DMRS ports. 4. Port 6, port 8, and port 10.

Optionally, the number of uplink PTRS ports is configured for the terminal by the network device. For example, the terminal determines that the number of uplink PTRS ports is 1 or 2 based on the indication of the downlink control information. For another example, the terminal receives high-level signaling sent by the network device, such as Radio Resource Control (RRC) signaling; based on the instructions of the high-level signaling, it determines the number of uplink PTRS ports to be 1 or 2.

Optionally, the number of uplink PTRS ports is determined by the terminal. For example, in the scenario of PUSCH transmission based on Code Book (CB), the number of uplink PTRS ports is determined in any of the following ways:

1) In the scenario of PUSCH transmission based on CB and using full coherent transmission mode, the terminal only indicates one sounding reference signal (Sounding Reference Signal, SRS) in response to the sounding reference signal resource indicator (Sounding reference signalResource Indicator, SRI). ) resource, it is determined that the number of uplink PTRS ports is 1.

2) In the scenario of PUSCH (Physical Uplink Shared Channel) transmission based on CB and using partial coherent (partial coherent) or non-coherent (non-coherent) transmission mode, the terminal responds to the wideband precoding indicator (Transmitted Precoding Matrix Indicator, TPMI) ) is 1 or 2, then the number of uplink PTRS ports is determined to be 1.

3) In the scenario of PUSCH transmission based on CB and using fully coherent transmission mode, the terminal responds to the SRI indicating only one SRS resource, and then determines that the number of uplink PTRS ports is 2.

4) In the scenario of PUSCH transmission based on CB and using partially coherent or incoherent transmission mode, the terminal determines that the number of uplink PTRS ports is 2 in response to the number of layers indicated by TPMI being layer 2 and above or layer 3 and above.

Exemplarily, the terminal receives downlink control information transmitted on the Media Access Control (MAC) layer.

For example, the above-mentioned up to 8 uplink DMRS ports (that is, the antenna ports corresponding to DMRS) can be mapped to antenna ports on the same antenna panel or different antenna panels; that is, the above-mentioned up to 8 uplink DMRS ports are mapped to M Antenna ports on an antenna panel, M is a positive integer less than or equal to 8. For example, 4 of the 8 uplink DMRS ports are mapped to the first antenna panel, and the remaining 4 of the 8 uplink DMRS ports are mapped to the second antenna panel.

It should be noted that the corresponding value range of the above-mentioned maximum 8 is 0 to 8. For example, the maximum 8 uplink DMRS ports refers to any one of the 8 situations: 1 uplink DMRS port, 2 uplink DMRS ports. , 3 uplink DMRS ports, 4 uplink DMRS ports, 5 uplink DMRS ports, 6 uplink DMRS ports, 7 uplink DMRS ports, 8 uplink DMRS ports.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to n codewords, the terminal can select up to 8 uplink DMRS ports based on the downlink control information. Determine the uplink DMRS port associated with the uplink PTRS port. This method is used to support the implementation of related functions of the uplink PTRS port and the uplink DMRS port corresponding to up to 8 antenna ports under different layer mapping schemes; for example, it is used to support the terminal in the type Under the layer mapping scheme of Type 1, the uplink PTRS ports and uplink DMRS ports corresponding to 8 antenna ports are used to estimate the common phase error (CPE); for another example, it is used to support terminals using 8 under the layer mapping scheme of Type 2 The uplink PTRS port and the uplink DMRS port corresponding to each antenna port perform CPE estimation.

Under different layer mapping schemes, the number of CWs is 2, and up to 8 uplink DMRS ports are divided into 2 DMRS port groups. 2 CWs correspond to 2 DMRS port groups one-to-one, and the downlink control information can be defined. The first information field indicates the association between the uplink PTRS port and the uplink DMRS port.

As shown in Figure 7, for the situation where the number of uplink PTRS ports is 1, step 210 can be implemented by step 310, as follows:

Step 310: In response to the number of uplink PTRS ports being 1, determine an association between an uplink DMRS port and an uplink PTRS port in a DMRS port group corresponding to a CW based on the first information field in the DCI.

The two CWs include a first CW and a second CW, and the two DMRS port groups include a first DMRS port group and a second DMRS port group; the first CW corresponds to the first DMRS port group, and the second CW corresponds to the second DMRS port group. The terminal determines an association between an uplink DMRS port in the first DMRS port group corresponding to the first CW and an uplink PTRS port based on the first information field in the downlink control information; or, based on the first information field in the downlink control information Determine an association between an uplink DMRS port and an uplink PTRS port in the second DMRS port group corresponding to the second CW.

Optionally, when the number of uplink DMRS ports is 4, the first information field includes 2 bits. Alternatively, when the number of uplink DMRS ports is 8, the first information field includes 3 bits.

For example, the value of M bits in the first information field can be used to indicate the port number of the uplink DMRS port allocated in a DMRS port group; for example, the first information field includes 2 bits, and two DMRS When the port numbers of the four upstream DMRS ports in the port group are 0 to 3, a 2-bit value can be used to indicate the port number of the upstream DMRS port.

Alternatively, the values of M bits in the first information field can be used to indicate the sorting position of the uplink DMRS ports allocated in a DMRS port group; for example, when the first information field includes 3 bits, a DMRS port The upstream DMRS ports allocated in the group are port 0, port 2, port 4, port 6, port 8 and port 10, then "000" indicates port 0, "001" indicates port 2, "010" indicates port 4, " 011" indicates port 6, "100" indicates port 8, and "101" indicates port 10; for another example, the upstream DMRS ports allocated in a DMRS port group are port 2, port 5, port 8, and port 1, then "000 " indicates port 2, "001" indicates port 5, "010" indicates port 8, and "011" indicates port 1.

Exemplarily, M bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to a CW with a higher modulation and coding scheme (MCS); for example, the first CW corresponds to an MCS level higher than the In the case of MCS levels corresponding to two CWs, M bits are used to indicate that an uplink DMRS port in the first DMRS port group corresponding to the first CW is associated with an uplink PTRS port.

Or, M bits are used to indicate an uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs is the same; for example, the uplink DMRS port in each DMRS port group is allocated by the network device , when the MCS levels of the two CWs are the same and the number of allocated ports in the first DMRS port group is greater than the number of allocated ports in the second DMRS port group, M bits are used to indicate the number of ports in the first DMRS port group. An upstream DMRS port is associated with the upstream PTRS port.

Or, M bits are used to indicate an uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs is the same; for example, the uplink DMRS port in each DMRS port group is allocated by the network device , when the MCS levels of the two CWs are the same and the number of allocated ports in the first DMRS port group is greater than the number of allocated ports in the second DMRS port group, M bits are used to indicate the number of allocated ports in the second DMRS port group. An upstream DMRS port is associated with the upstream PTRS port.

Alternatively, M bits are used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW.

Alternatively, M bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

Wherein, when the number of uplink DMRS ports is 4, the value of M is 2; when the number of uplink DMRS ports is 8, the value of M is 3.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to 2 codewords, the terminal can select up to 8 uplink DMRS ports based on the downlink control information. An uplink DMRS port associated with an uplink PTRS port is determined to support the association of an uplink PTRS port on one of the up to 8 uplink DMRS ports under the layer mapping scheme corresponding to 2 codewords.

As shown in Figure 8, for the situation where the number of uplink PTRS ports is 2, step 210 can be implemented by steps 410 to 420, as follows:

Step 410: In response to the number of uplink PTRS ports being 2, determine the association between the first uplink DMRS port and the first uplink PTRS port in the DMRS port group corresponding to a CW based on the first information field in the DCI.

The two CWs include a first CW and a second CW, and the two DMRS port groups include a first DMRS port group and a second DMRS port group; the first CW corresponds to the first DMRS port group, and the second CW corresponds to the second DMRS port group. The two uplink PTRS ports include a first uplink PTRS port and a second uplink PTRS port; the first information field in the downlink control information is used to indicate the first uplink DMRS port associated with the first uplink PTRS port. Exemplarily, the terminal determines the association between the first uplink DMRS port and the first uplink PTRS port in the first DMRS port group corresponding to the first CW based on the first information field in the downlink control information; or, based on the downlink control The first information field in the information determines the association between the first uplink DMRS port and the first uplink PTRS port in the second DMRS port group corresponding to the second CW.

For example, the M bit values in the first information field may be used to indicate the port number of the uplink DMRS port allocated in a DMRS port group. Alternatively, the M bit values in the first information field may be used to indicate the sorting position of the allocated uplink DMRS ports in a DMRS port group.

Exemplarily, M bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS; for example, when the MCS level corresponding to the first CW is lower than the MCS level corresponding to the second CW, The M bits are used to indicate that the first uplink DMRS port in the second DMRS port group corresponding to the second CW is associated with the first uplink PTRS port.

Or, M bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs is the same; for example, the uplink DMRS port in each DMRS port group is configured by the network device Assigned, when the MCS levels of the two CWs are the same and the number of assigned ports in the first DMRS port group is less than the number of assigned ports in the second DMRS port group, M bits are used to indicate the number of assigned ports in the second DMRS port group. The first uplink DMRS port is associated with the first uplink PTRS port.

Or, M bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs is the same; for example, the uplink DMRS port in each DMRS port group is configured by the network device Assigned, when the MCS levels of the two CWs are the same and the number of assigned ports in the first DMRS port group is less than the number of assigned ports in the second DMRS port group, M bits are used to indicate the number of assigned ports in the first DMRS port group. The first uplink DMRS port is associated with the first uplink PTRS port.

Alternatively, M bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW.

Alternatively, M bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.

Step 420: Determine the association between the second uplink DMRS port and the second uplink PTRS port in the remaining DMRS port group based on default rules.

The above default rules define the default association between the second uplink PTRS port and the second uplink DMRS port. The terminal may determine the second uplink DMRS port associated with the second uplink PTRS port among the uplink DMRS ports allocated in the remaining DMRS port groups based on the above default rule. Optionally, the above-mentioned default rules may be pre-configured for the terminal by the network device; or the above-mentioned default rules may be defined by a protocol.

The above remaining DMRS port group refers to another DMRS port group among the two DMRS port groups except the DMRS port group where the first uplink DMRS port is located. Exemplarily, the remaining DMRS port groups are the first DMRS port group or the second DMRS port group.

Optionally, the above default rules include any of the following:

The second uplink DMRS port is the uplink DMRS port corresponding to the largest port number in the remaining DMRS port group. For example, the uplink DMRS ports allocated in the first/second DMRS port group include port 0 and port 1, and the terminal determines the association between port 1 and the second uplink PTRS port.

Alternatively, the second uplink DMRS port is the uplink DMRS port corresponding to the smallest port number in the remaining DMRS port groups. For example, the uplink DMRS ports allocated in the first/second DMRS port group include port 3, port 5 and port 7, and the terminal determines the association between port 3 and the second uplink PTRS port.

Alternatively, the second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined method.

Exemplarily, the above predefined method includes: when the first uplink DMRS port is the G-th uplink DMRS port in a DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port group. DMRS port, H is the remainder of the sum of G and 2 divided by P, P is the minimum number of ports corresponding to the two DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are not greater than 4 is a positive integer. Among them, H is expressed by the formula: H=(G+2) mod P, mod represents the remainder after division operation; it should be noted that when (G+2) is divided by P, the value of H is P, then H The value of is less than or equal to P.

For example, the first DMRS port group is allocated with 3 uplink DMRS ports, and the second DMRS port group is allocated with 5 uplink DMRS ports; the terminal determines the fifth uplink DMRS port in the second DMRS port group as the first uplink DMRS port, Then it is determined based on the above predefined method that the (5+2) mod 3=1 uplink DMRS port in the first DMRS port group is the second uplink DMRS port.

Alternatively, the second uplink DMRS port is an uplink DMRS port indicated by the network device. For example, the network device indicates a fixed upstream DMRS port among eight upstream DMRS ports as the second upstream DMRS port.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to two codewords, it allocates and uses them from a DMRS port group based on the downlink control information. Determine the first upstream DMRS port associated with the first upstream PTRS port from the upstream DMRS ports, and determine the second upstream PTRS port associated with the second upstream PTRS port from the upstream DMRS ports allocated for use in another DMRS port group based on default rules. Two uplink DMRS ports to support two uplink DMRS ports corresponding to two uplink PTRS ports one-to-one when using up to 8 uplink DMRS ports under the layer mapping scheme corresponding to 2 codewords.

Under different layer mapping schemes, when the number of CWs is 1, the information field in the downlink control information can be defined to indicate the uplink DMRS port associated with the uplink PTRS port among up to 8 uplink DMRS ports.

As shown in Figure 9, for the situation where the number of uplink PTRS ports is 1, step 210 can be implemented by step 510, as follows:

Step 510: In response to the number of uplink PTRS ports being 1, determine the association between one uplink DMRS port among up to eight uplink DMRS ports and the uplink PTRS port based on the first information field in the downlink control information.

Optionally, when the number of uplink DMRS ports is 4, the first information field includes 2 bits, and the 2 bits in the first information field are used to indicate the difference between one of the 4 uplink DMRS ports and the uplink DMRS port. Association relationship between PTRS ports. For example, the network device assigns port 0 to port 3 in the uplink DMRS port to the terminal. "00" is used to indicate port 0, "01" is used to indicate port 1, "10" is used to indicate port 2, and "11" is used to indicate port 0. on indicated port 3.

Optionally, when the number of uplink DMRS ports is 8, the first information field includes 3 bits, and the 3 bits in the first information field are used to indicate the difference between one of the 8 uplink DMRS ports and the uplink DMRS port. The association between PTRS ports. For example, the network device allocates ports 4 to 11 in the uplink DMRS ports to the terminal, "000" is used to indicate port 4, "001" is used to indicate port 5, "010" is used to indicate port 6, and "011" is used to indicate port 4. Indicates port 7, "100" is used to indicate port 8, "101" is used to indicate port 9, "110" is used to indicate port 10, and "111" is used to indicate port 11.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to one codeword, it allocates data from the terminal based on an information field in the downlink control information. The upstream DMRS port associated with the upstream PTRS port is determined from the maximum 8 upstream DMRS ports used to support an upstream PTRS port corresponding to one upstream PTRS port when using up to 8 upstream DMRS ports under the layer mapping scheme corresponding to one codeword. DMRS port.

As shown in Figure 10, for the situation where the number of uplink PTRS ports is 2, step 210 can be implemented by step 610, as follows:

Step 610: In response to the number of uplink PTRS ports being 2, determine the association between the first uplink DMRS port and the first uplink PTRS port among up to 8 uplink DMRS ports based on the first information field in the DCI; and based on the DCI The second information field in determines the association between the second uplink DMRS port and the second uplink PTRS port among the maximum 8 uplink DMRS ports.

The two uplink PTRS ports include the first uplink PTRS port and the second uplink PTRS port. When the number of uplink DMRS ports is 4, the first information field and the second information field each include 2 bits, and the terminal determines from the 4 uplink DMRS ports based on the 2-bit indication in the first information field. The first uplink DMRS port; based on the 2-bit indication in the second information field, determine the second uplink DMRS port from the 4 uplink DMRS ports. The second uplink DMRS port refers to the 4 uplink DMRS ports except the first Upstream DMRS ports other than the upstream DMRS port.

When the number of uplink DMRS ports is 8, the first information field and the second information field include 3 bits respectively, and the terminal determines from the 8 uplink DMRS ports based on the 3-bit indication in the first information field. The first uplink DMRS port; based on the 3-bit indication in the second information field, determine the second uplink DMRS port from the 8 uplink DMRS ports. The second uplink DMRS port refers to the 8 uplink DMRS ports except the first Upstream DMRS ports other than the upstream DMRS port.

Optionally, the above-mentioned first information field is a PTRS-DMRS association field (ie, PTRS-DMRS association field).

Optionally, the second information field refers to the bits of the MCS field on the DCI except the first information field or the reserved bits (reserved codepoints) of other information fields.

As shown in Figure 11, for the situation where the number of uplink PTRS ports is 2, step 210 can also be implemented by step 710, as follows:

Step 710, in response to the number of uplink PTRS ports being 2, determine the association between the first uplink DMRS port and the first uplink PTRS port among up to 8 uplink DMRS ports based on the first information field in the DCI; and based on the DCI The code point of the second information field in determines the association between the second uplink DMRS port and the second uplink PTRS port among up to eight uplink DMRS ports.

The first information field includes M bits, and the value of M is 1 or 2. Exemplarily, the second information field includes M bits, and M bit code points are used to indicate 2 ^M uplink DMRS ports, and M is a positive integer.

The two uplink PTRS ports include the first uplink PTRS port and the second uplink PTRS port. When the number of uplink DMRS ports is 4, the first information field and the second information field each include 2 bits, and the terminal determines from the 4 uplink DMRS ports based on the 2-bit indication in the first information field. The first uplink DMRS port; based on the 2-bit code point and the corresponding relationship in the second information field, the second uplink DMRS port is determined from the 4 uplink DMRS ports. The second uplink DMRS port refers to the 4 uplink DMRS ports. For other uplink DMRS ports except the first uplink DMRS port, the corresponding relationship refers to the relationship between the second uplink PTRS port corresponding to the code point of the second information domain and the uplink DMRS port.

When the number of uplink DMRS ports is 8, the first information field and the second information field include 3 bits respectively, and the terminal determines from the 8 uplink DMRS ports based on the 3-bit indication in the first information field. The first uplink DMRS port; based on the 3-bit code points and corresponding relationships in the second information domain, the second uplink DMRS port is determined from the 8 uplink DMRS ports. The second uplink DMRS port refers to the 8 uplink DMRS ports. For other uplink DMRS ports except the first uplink DMRS port, the corresponding relationship refers to the relationship between the second uplink PTRS port corresponding to the code point of the second information domain and the uplink DMRS port.

For example, as shown in Table 1, assuming that the value of M is 2, a 2-bit code point can represent 4 uplink DMRS ports. When the code point value is "00", the second uplink port in the corresponding relationship The PTRS port is associated with the uplink DMRS port 3; when the code point value is "01", the second uplink PTRS port is associated with the uplink DMRS port 2 in the corresponding relationship; when the code point value is "10", the second uplink PTRS port is associated with the uplink DMRS port 2 in the corresponding relationship. The second uplink PTRS port is associated with the uplink DMRS port 1; when the code point value is "11", the second uplink PTRS port is associated with the uplink DMRS port 0 in the corresponding relationship.

Table 1

码点的取值code point value	与第二上行PTRS端口关联的上行DMRS端口Upstream DMRS port associated with the second upstream PTRS port
0000	上行DMRS端口3Upstream DMRS port 3
0101	上行DMRS端口2Upstream DMRS port 2
1010	上行DMRS端口1Upstream DMRS port 1
1111	上行DMRS端口0Upstream DMRS port 0

Optionally, the above-mentioned first information field is a PTRS-DMRS association field.

Optionally, the second information field refers to the bits of the MCS field on the DCI except the first information field or the reserved bits of other information fields.

Optionally, the corresponding relationship is defined by the network device; or, the corresponding relationship is predefined.

Optionally, the above M is obtained by high-level configuration, or the above M is obtained through predefinition.

As shown in Figure 12, for the situation where the number of uplink PTRS ports is 2, step 210 can also be implemented by step 810, as follows:

Step 810: In response to the number of uplink PTRS ports being 2, determine between the first uplink DMRS port and the first uplink PTRS port among up to 8 uplink DMRS ports based on the code point of the first information field in the DCI and the first correspondence. and determining an association between the second uplink DMRS port and the second uplink PTRS port among up to 8 uplink DMRS ports based on the code point of the first information domain in the DCI and the second correspondence.

Among them, the first information field includes M bits, and the value of M is 2 or 3; the first correspondence is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second correspondence is the mapping relationship between the second uplink DMRS port and the code point corresponding to the first uplink PTRS port. The mapping relationship between the code point corresponding to the PTRS port and the uplink DMRS port.

Exemplarily, M bit code points are used to indicate 2 ^M associated combinations, each associated combination corresponds to an uplink DMRS port associated with the first uplink PTRS port, and an uplink DMRS port associated with the second uplink PTRS port. .

As shown in Table 2, taking the value of M as 3 as an example and the value of the code point as "000", in the first correspondence relationship, the uplink DMRS port 0 and the uplink PTRS port 0 (that is, the first uplink PTRS port ) association, in the second correspondence relationship, the uplink DMRS port 4 is associated with the uplink PTRS port 1 (that is, the second uplink PTRS port); when the value of the code point is "011", in the first correspondence relationship, the uplink DMRS port 3 It is associated with the uplink PTRS port 0. In the second correspondence, the uplink DMRS port 5 is associated with the uplink PTRS port 1. When the value of the code point is "110", in the first correspondence, the uplink DMRS port 6 is associated with the uplink PTRS port 0. Association, in the second correspondence relationship, the uplink DMRS port 3 is associated with the uplink PTRS port 1.

Table 2

Exemplarily, up to 8 uplink DMRS ports are divided into 2 DMRS port groups: a first port group and a second DMRS port group. The first uplink PTRS port is assigned to correspond to the first DMRS port group, and the second uplink PTRS port is assigned to correspond to the first DMRS port group. The second DMRS port group corresponds; each association combination corresponds to an uplink DMRS port in the first DMRS port group associated with the first uplink PTRS port, and an uplink DMRS port in the second DMRS port group associated with the second uplink PTRS port. .

As shown in Table 3, taking the value of M as 3 and 8 uplink DMRS ports being divided into 2 DMRS port groups as an example, when the value of the code point is "001", in the first corresponding relationship, the uplink DMRS Port 2 is associated with uplink PTRS port 0, and in the second correspondence, uplink DMRS port 3 is associated with uplink PTRS port 1; when the value of the code point is "100", in the first correspondence, uplink DMRS port 0 is associated with uplink PTRS Port 0 is associated, and in the second correspondence, the uplink DMRS port 3 is associated with the uplink PTRS port 1; when the value of the code point is "111", the uplink DMRS port 6 is associated with the uplink PTRS port 0 in the first correspondence. In the second correspondence relationship, the uplink DMRS port 1 is associated with the uplink PTRS port 1.

table 3

Optionally, the first correspondence relationship and the second correspondence relationship are defined by the network device; or, the first correspondence relationship and the second correspondence relationship are predefined.

Optionally, the first information field is a PTRS-DMRS association field.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to one codeword, the terminal determines the relationship between the PTRS port and the DMRS port based on one or two information fields in the downlink control information. Determine the first uplink DMRS port associated with the first uplink PTRS port and the second uplink DMRS port associated with the second uplink PTRS port from the maximum 8 uplink DMRS ports allocated and used by the terminal to support one codeword correspondence When using up to 8 upstream DMRS ports under the layer mapping scheme, the two upstream DMRS ports correspond one-to-one to the two upstream PTRS ports.

Under different layer mapping schemes, when the number of CWs is 1 or 2, an information field in the downlink control information can be defined to indicate the uplink DMRS port associated with the uplink PTRS port among up to 8 uplink DMRS ports.

As shown in Figure 13, for the situation where the number of uplink PTRS ports is 2, step 210 can be implemented by step 910, as follows:

Step 910: In response to the number of uplink PTRS ports being 2, determine the association between the first uplink DMRS port and the first uplink PTRS port and the second uplink PTRS port among up to 8 uplink DMRS ports based on the first information field in the DCI. The association between the DMRS port and the second uplink PTRS port.

When the number of uplink DMRS ports is ^2M , the first information field includes 2M or 2(M-1) bits, and the value of M is 2 or 3. Optionally, the M most significant bits (the Most Significant Byte, MSB) are used to indicate the first uplink DMRS port among the 2 ^M uplink DMRS ports, and the M least significant bits (the Least Significant Byte, LSB) are used to indicate The second uplink DMRS port among the 2 ^M uplink DMRS ports; alternatively, the M most significant bits are used to indicate the second uplink DMRS port among the 2 ^M uplink DMRS ports, and the M least significant bits are used to indicate the 2 ^M uplink DMRS ports. The first upstream DMRS port among the DMRS ports.

Illustratively, the value of the 3 bits of the most significant bits is used to indicate one of the 8 uplink DMRS ports associated with the first uplink PTRS port (that is, the first uplink DMRS port); the 2 of the least significant bits The value of bits is used to indicate another uplink DMRS port (that is, the second uplink DMRS port) associated with the second uplink PTRS port among the eight uplink DMRS ports.

For example, 8 uplink DMRS ports are divided into 2 DMRS port groups: a first DMRS port group and a second DMRS port group; each DMRS port group may include 4 uplink DMRS ports. Among them, the value of the 2 bits of the most significant bits is used to indicate an uplink DMRS port associated with the first uplink PTRS port in the first DMRS port group (that is, the first uplink DMRS port); the 2 bits of the least significant bits The value of is used to indicate an uplink DMRS port in the second DMRS port group associated with the second uplink PTRS port (that is, the second uplink DMRS port). The second DMRS port group is a DMRS port group other than the first DMRS port group among the two DMRS port groups.

As shown in Table 4, when the number of uplink DMRS ports is 4 and the first information field includes 4 bits, the terminal responds that the 4 bits are "0001" and determines the first port associated with the first uplink PTRS port 0. The uplink DMRS port is uplink DMRS port 0, and the second uplink DMRS port associated with the second uplink PTRS port 1 is uplink DMRS port 1; the terminal responds that the 4 bits are "0110" and determines the port associated with the first uplink PTRS port 0. The first uplink DMRS port is uplink DMRS port 1, and the second uplink DMRS port associated with the second uplink PTRS port 1 is uplink DMRS port 2; the terminal responds that the 4 bits are "1011" and determines the connection with the first uplink PTRS port 0. The associated first uplink DMRS port is uplink DMRS port 2, and the second uplink DMRS port associated with the second uplink PTRS port 1 is uplink DMRS port 3; the terminal responds that the 4 bits are "1100" and determines the connection with the first uplink PTRS port. The first uplink DMRS port associated with port 0 is uplink DMRS port 3, and the second uplink DMRS port associated with the second uplink PTRS port 1 is uplink DMRS port 0.

Table 4

Optionally, the first information field is a PTRS-DMRS association field.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. When the terminal adopts a target layer mapping scheme corresponding to 1 or 2 codewords, it is based on an information field in the downlink control information. The first uplink DMRS port associated with the first uplink PTRS port and the second uplink DMRS port associated with the second uplink PTRS port are determined from the maximum 8 uplink DMRS ports allocated and used by the terminal. This method can support 1 at the same time. When using the layer mapping scheme corresponding to the codeword, up to 8 uplink DMRS ports are used. Two uplink DMRS ports correspond to the two uplink PTRS ports one-to-one. When the layer mapping scheme corresponding to the 2 codewords is used, up to 8 uplink DMRS ports are used. There are two upstream DMRS ports corresponding one-to-one to the two upstream PTRS ports.

Figure 14 shows a flow chart of a method for determining the relationship between a PTRS port and a DMRS port provided by an exemplary embodiment of the present disclosure. The method is applied to the network equipment of the communication system shown in Figure 1. The method includes:

Step 1010: Send downlink control information to the terminal. The downlink control information is used to indicate the association between the uplink PTRS port and the uplink DMRS port when the terminal adopts the target layer mapping scheme corresponding to n codewords; where, the uplink DMRS The maximum number of ports is 8; the value of n is 1 or 2; the target layer mapping scheme is a type 1 layer mapping scheme, or a type 2 layer mapping scheme.

Each type of layer mapping scheme includes two cases where the number of codewords is 1 and 2:

First, for the type 1 layer mapping scheme, when the number of codewords is 1, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4; when the number of codewords is In the case of 2, the two codewords include the first codeword and the second codeword. The first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword corresponds to the second transmission layer number after layer mapping. Then the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1, and the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8.

Second, for the type 2 layer mapping scheme, when the number of codewords is 1, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 4; when the number of codewords is In the case of 2, the two codewords include the first codeword and the second codeword. The first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword corresponds to the second transmission layer number after layer mapping. Then the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6; and the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8 , or the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8, or the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

Or, for the type 2 layer mapping scheme, when the number of codewords is 1, the number of transmission layers corresponding to one codeword after layer mapping is greater than 0 and less than or equal to 3; when the number of codewords is 2 In the case of , the two codewords include the first codeword and the second codeword. The first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword corresponds to the second transmission layer number after layer mapping, then The layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is greater than 3 and less than or equal to 8.

Or, for the type 2 layer mapping scheme, when the number of codewords is 1, the number of transmission layers corresponding to 1 CW after layer mapping is 1; when the number of codewords is 2, 2 codes The word includes a first codeword and a second codeword. The first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword corresponds to the second transmission layer number after layer mapping. Then the first transmission layer number and the The layer number difference between the two transmission layer numbers is any value from 0 to 6, and the sum of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

Under the above different layer mapping schemes, the number of codewords is 2, and the way the network device indicates the uplink PTRS port association relationship can include any of the following:

·The number of uplink PTRS ports is 1. The first information field in the DCI includes M bits. The M bits are used to indicate the association between an uplink DMRS port and the uplink PTRS port in the DMRS port group corresponding to a CW.

Optionally, M bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

Alternatively, M bits are used to indicate an uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs is the same;

Alternatively, M bits are used to indicate an uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs is the same;

Alternatively, M bits are used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW;

The number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the association between the first uplink DMRS port and the first uplink PTRS port in the DMRS port group corresponding to a CW; the first information field includes M bits.

Optionally, M bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

Alternatively, M bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs is the same;

Alternatively, M bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of assigned ports when the MCS of the two CWs is the same;

Alternatively, M bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

Optionally, the network device pre-configures default rules for the terminal. The default rules include any of the following:

The second upstream DMRS port is the upstream DMRS port corresponding to the largest port number in the remaining DMRS port group;

Alternatively, the second uplink DMRS port is the uplink DMRS port corresponding to the smallest port number in the remaining DMRS port group;

Alternatively, the second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined method;

Alternatively, the second uplink DMRS port is an uplink DMRS port indicated by the network device.

Optionally, the predefined method includes: when the first uplink DMRS port is the G-th uplink DMRS port in a DMRS port group, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port group. Port, H is the remainder of the sum of G and 2 divided by P, P is the minimum number of ports corresponding to two DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are not greater than 4 positive integer.

Under the above different layer mapping schemes, the number of codewords is 1, and the way the network device indicates the uplink PTRS port association relationship can include any of the following:

·When the number of CWs is 1, the number of uplink PTRS ports is 1, and the first information field in the DCI includes M bits, and the M bits are used to indicate one of the 2 ^M uplink DMRS ports. Association relationship between upstream PTRS ports.

·When the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the connection between the first uplink DMRS port and the first uplink PTRS port among the ^2M uplink DMRS ports. The association relationship; the second information field in the DCI is used to indicate the association relationship between the second uplink DMRS port and the second uplink PTRS port among the 2 ^M uplink DMRS ports; wherein the first information field includes M bits.

·When the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the connection between the first uplink DMRS port and the first uplink PTRS port among the ^2M uplink DMRS ports. The association relationship; the code point of the second information field in the DCI is used to indicate the association relationship between the second uplink DMRS port and the second uplink PTRS port among the 2 ^M uplink DMRS ports; wherein the first information field includes M bits.

·When the number of CWs is 1, the number of uplink PTRS ports is 2, and the code point of the first information field in the DCI is used to indicate the first uplink DMRS port among the 2 ^M uplink DMRS ports in the first correspondence relationship. The association relationship with the first uplink PTRS port; the code point of the first information field in the DCI is used to indicate the second uplink DMRS port and the second uplink PTRS port among the 2 ^M uplink DMRS ports in the second correspondence relationship. There is an association relationship between; wherein, the first information field includes M bits; the first correspondence relationship is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second correspondence relationship is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; Mapping relationship between code points and uplink DMRS ports.

Under the above different layer mapping schemes, the number of codewords is 1 or 2, and the way the network device indicates the uplink PTRS port association relationship may include:

The number of uplink PTRS ports is 2. The first information field in the DCI includes 2M bits. The 2M bits are used to indicate the association between the first uplink DMRS port and the first uplink PTRS port among the 2 ^M uplink DMRS ports. , and the association relationship between the second uplink DMRS port and the second uplink PTRS port.

Optionally, the 2M bits include M most significant bits and M least significant bits; the M most significant bits are used to indicate the first uplink DMRS port, and the M least significant bits are used to indicate the second uplink DMRS port; or, The M most significant bits are used to indicate the second uplink DMRS port, and the M least significant bits are used to indicate the first uplink DMRS port.

Optionally, the value of the above M is 2 or 3.

In summary, this embodiment provides a method for determining the relationship between a PTRS port and a DMRS port. The network device sends downlink control information to the terminal, so that the terminal uses the target layer mapping scheme corresponding to n codewords based on The downlink control information determines the uplink DMRS port associated with the uplink PTRS port from up to 8 uplink DMRS ports. This method is used to support the correlation between the uplink PTRS port and the uplink DMRS port using up to 8 antenna ports under different layer mapping schemes. Functional implementation, for example, is used to support terminals using uplink PTRS ports and uplink DMRS ports corresponding to 8 antenna ports for co-phase error estimation under different layer mapping schemes.

Figure 15 shows a block diagram of a device for determining the relationship between a PTRS port and a DMRS port provided by an exemplary embodiment of the present disclosure. The device can be implemented as part or all of the UE through software, hardware, or a combination of the two. The device includes :

The first processing module 1110 is configured to determine the association between the uplink PTRS port and the uplink DMRS port based on DCI when using a target layer mapping scheme corresponding to n CWs;

In some embodiments, the two codewords include a first codeword and a second codeword; the first codeword corresponds to the first transmission layer number after layer mapping, and the second codeword after layer mapping is Corresponds to the second transmission layer number;

Under the type 1 layer mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

Under the type 2 layer mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.

In some embodiments, under the type 1 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8;

Under the type 2 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the first transmission layer number and the second transmission layer number are The total number of transmission layers is greater than 3 and less than or equal to 8; or the total number of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.

In some embodiments, when the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs correspond to the 2 DMRS port groups in a one-to-one manner. ;

The first processing module 1110 is configured to determine, based on the first information field in the DCI, an uplink DMRS port in the DMRS port group corresponding to the CW and the number of the uplink PTRS ports in response to the number of uplink PTRS ports being 1. Association relationship between uplink PTRS ports; the first information field includes 3 bits.

In some embodiments, the 3 bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding strategy MCS;

Alternatively, the 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs are the same;

Alternatively, the 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

Alternatively, the 3 bits are used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW;

Alternatively, the 3 bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

The first processing module 1110 is configured to, in response to the number of uplink PTRS ports being 2, determine the first uplink DMRS port and the first uplink DMRS port in the DMRS port group corresponding to the CW based on the first information field in the DCI. An association between uplink PTRS ports; the first information field includes 3 bits.

In some embodiments, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS;

Alternatively, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs are the same;

Alternatively, the 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

Alternatively, the 3 bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

Alternatively, the 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.

In some embodiments, the first processing module 1110 is configured to determine an association between the second uplink DMRS port and the second uplink PTRS port in the remaining DMRS port group based on default rules.

In some embodiments, the default rules include any of the following:

The second uplink DMRS port is the uplink DMRS port corresponding to the largest port number in the remaining DMRS port group;

In some embodiments, the predefined methods include:

In the case where the first uplink DMRS port is the G-th uplink DMRS port in one of the DMRS port groups, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port groups. , H is the remainder of the sum of G and 2 divided by P, P is the minimum number of ports corresponding to the two DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are both no greater than 4 is a positive integer.

In some embodiments, under the type 1 layer mapping scheme, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4;

Under the layer mapping scheme of type 2, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4; or, the number of transmission layers corresponding to one CW after layer mapping is greater than 0, and less than or equal to 3; or, the number of transmission layers corresponding to one CW after layer mapping is 1.

In some embodiments, the first processing module 1110 is configured to determine, in response to the number of uplink PTRS ports being 1, based on the first information field in the DCI when the number of CWs is 1. The association relationship between one uplink DMRS port among the eight uplink DMRS ports and the uplink PTRS port; the first information field includes 3 bits.

In some embodiments, the first processing module 1110 is configured to determine based on the first information field in the DCI in response to the number of uplink PTRS ports being 2 when the number of CWs is 1. The association relationship between the first uplink DMRS port and the first uplink PTRS port among the 8 uplink DMRS ports, the first information field includes 3 bits; and the determination is based on the second information field in the DCI The association relationship between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports.

In some embodiments, the first processing module 1110 is configured to determine based on the first information field in the DCI in response to the number of uplink PTRS ports being 2 when the number of CWs is 1. The association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports, the first information field includes 3 bits; and the code based on the second information field in the DCI Click to determine the association between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports.

In some embodiments, the second information field refers to bits of the MCS field on the DCI except the first information field or reserved bits of other information fields.

In some embodiments, the first processing module 1110 is configured to, when the number of CWs is 1, in response to the number of uplink PTRS ports being 2, based on the first information domain in the DCI. The code point and the first correspondence determine the association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports; and based on the code point in the first information domain in the DCI and the first The second correspondence determines the association between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports;

Wherein, the first information field includes 3 bits; the first correspondence is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second correspondence is the mapping between the second uplink DMRS port and the code point corresponding to the first uplink PTRS port. The mapping relationship between the code point corresponding to the uplink PTRS port and the uplink DMRS port.

In some embodiments, the first processing module 1110 is configured to determine the first uplink DMRS among the eight uplink DMRS ports based on the first information field in the DCI in response to the number of uplink PTRS ports being 2. The association relationship between the port and the first uplink PTRS port, and the association relationship between the second uplink DMRS port and the second uplink PTRS port; the first information field includes 6 bits.

In some embodiments, the 6 bits include 3 most significant bits MSB and 3 least significant bits LSB;

The three most significant bits are used to indicate the first uplink DMRS port, and the three least significant bits are used to indicate the second uplink DMRS port;

Alternatively, the three most significant bits are used to indicate the second uplink DMRS port, and the three least significant bits are used to indicate the first uplink DMRS port.

Figure 16 shows a block diagram of a device for determining the relationship between a PTRS port and a DMRS port provided by an exemplary embodiment of the present disclosure. The device can be implemented as part or all of the network equipment through software, hardware, or a combination of both. The device include:

The second sending module 1120 is configured to send downlink control information to the terminal. The downlink control information is used to instruct the terminal to use the target layer mapping scheme corresponding to n codewords, between the uplink PTRS port and the uplink DMRS port. relationship;

The number of the uplink PTRS ports is 1, and the first information field in the DCI includes 3 bits, and the 3 bits are used to indicate that an uplink DMRS port in the DMRS port group corresponding to the CW is the same as the Association relationship between upstream PTRS ports.

In some embodiments, the 3 bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS;

The number of the uplink PTRS ports is 2, and the first information field in the DCI is used to indicate an association between the first uplink DMRS port and the first uplink PTRS port in a DMRS port group corresponding to the CW; The first information field includes 3 bits.

In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 1, and the first information field in the DCI includes 3 bits, and the 3 bits are used to indicate The association relationship between one uplink DMRS port among the eight uplink DMRS ports and the uplink PTRS port.

In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the first of the 8 uplink DMRS ports. An association between an uplink DMRS port and a first uplink PTRS port. The first information field includes 3 bits; the second information field in the DCI is used to indicate the second of the 8 uplink DMRS ports. The association between the uplink DMRS port and the second uplink PTRS port.

In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the first of the 8 uplink DMRS ports. The association between an uplink DMRS port and the first uplink PTRS port, the first information field includes 3 bits; the code point of the second information field in the DCI is used to indicate which of the 8 uplink DMRS ports The association relationship between the second uplink DMRS port and the second uplink PTRS port.

In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 2, and the code point of the first information field in the DCI is used to indicate the first corresponding relationship. The association between the first uplink DMRS port and the first uplink PTRS port among the 8 uplink DMRS ports; the code point of the first information field in the DCI is used to indicate the 8 uplink DMRS in the second corresponding relationship The association between the second uplink DMRS port and the second uplink PTRS port in the port;

In some embodiments, the number of the uplink PTRS ports is 2, and the first information field in the DCI includes 6 bits, and the 6 bits are used to indicate the first uplink DMRS among the 8 uplink DMRS ports. The association relationship between the port and the first uplink PTRS port, and the association relationship between the second uplink DMRS port and the second uplink PTRS port.

In some embodiments, the 6 bits include 3 most significant bits and 3 least significant bits;

Figure 17 shows a schematic structural diagram of a UE provided by an exemplary embodiment of the present disclosure. The UE includes: a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204 and a bus 1205.

The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

The receiver 1202 and the transmitter 1203 can be implemented as a communication component, and the communication component can be a communication chip.

Memory 1204 is connected to processor 1201 through bus 1205.

The memory 1204 can be used to store at least one instruction, and the processor 1201 is used to execute the at least one instruction to implement each step in the above method embodiment.

Additionally, memory 1204 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-only memory (EEPROM, Electrically Erasable Programmable Read Only Memory), Erasable Programmable Read-Only Memory (EPROM, Erasable Programmable Read Only Memory), Static Random-Access Memory (SRAM, Static Random-Access Memory), Read-Only Memory (ROM, Read Only Memory), magnetic memory, flash memory, programmable read-only memory (PROM, Programmable Read Only Memory).

In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, is also provided. The instructions can be executed by a processor of the UE to complete the above-mentioned determination of the relationship between the PTRS port and the DMRS port. method. For example, the non-transitory computer-readable storage medium can be ROM, random access memory (RAM, Random-Access Memory), compact disc read-only memory (CD-ROM, Compact Disc Read Only Memory), magnetic tape, floppy disk and optical data storage devices, etc.

A non-transitory computer-readable storage medium, when instructions in the non-transitory computer storage medium are executed by a processor of a UE, enable the UE to perform the above method of determining the relationship between a PTRS port and a DMRS port.

Figure 18 is a block diagram of a network device 1300 according to an exemplary embodiment. The network device 1300 may be a base station.

Network device 1300 may include: processor 1301, receiver 1302, transmitter 1303, and memory 1304. The receiver 1302, the transmitter 1303 and the memory 1304 are respectively connected to the processor 1301 through a bus.

The processor 1301 includes one or more processing cores, and the processor 1301 executes the method for determining the relationship between the PTRS port and the DMRS port provided by the embodiment of the present disclosure by running software programs and modules. Memory 1304 may be used to store software programs and modules. Specifically, the memory 1304 can store the operating system 13041 and at least one application module 13042 required for the function. The receiver 1302 is used to receive communication data sent by other devices, and the transmitter 1303 is used to send communication data to other devices.

An exemplary embodiment of the present disclosure also provides a computer-readable storage medium. The computer-readable storage medium stores at least one instruction, at least a program, a code set or an instruction set. The at least one instruction, the At least one program, the code set or the instruction set is loaded and executed by the processor to implement the method for determining the relationship between the PTRS port and the DMRS port provided by the above method embodiments.

An exemplary embodiment of the present disclosure also provides a computer program product, the computer program product includes computer instructions, the computer instructions are stored in a computer-readable storage medium; the processor of the computer device reads from the computer-readable storage medium The computer instructions are read from the medium, and the processor executes the computer instructions, so that the computer device performs the method of determining the relationship between the PTRS port and the DMRS port as provided in each of the above method embodiments.

It should be understood that "plurality" mentioned in this article means two or more. "And/or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the related objects are in an "or" relationship.

Other embodiments of the disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the disclosure that follow the general principles of the disclosure and include common common sense or customary technical means in the technical field that are not disclosed in the disclosure. . It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the disclosure is limited only by the appended claims.

Claims

A method for determining the relationship between a PTRS port and a DMRS port, characterized in that the method is executed by a terminal, and the method includes:

In the case of using the target layer mapping scheme corresponding to n codewords CW, determine the correlation between the uplink phase tracking reference signal PTRS port and the uplink demodulation reference signal DMRS port based on the downlink control information DCI;

Wherein, the maximum number of uplink DMRS ports is 8; the value of n is 1 or 2; and the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.
The method according to claim 1, characterized in that the two codewords include a first codeword and a second codeword; the first codeword corresponds to a first transmission layer number after layer mapping, and the first codeword corresponds to a first transmission layer number. The second codeword corresponds to the second transmission layer number after layer mapping;

Under the type 1 layer mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

Under the type 2 layer mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.
The method according to claim 2, characterized in that:

Under the type 1 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8;

Under the type 2 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the first transmission layer number and the second transmission layer number are The total number of transmission layers is greater than 3 and less than or equal to 8; or the total number of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.
The method of claim 3, wherein when the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs and the 2 One-to-one correspondence between DMRS port groups;

Determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of the uplink PTRS ports being 1, determining an association between an uplink DMRS port in the DMRS port group corresponding to the CW and the uplink PTRS port based on the first information field in the DCI; The first information field includes 3 bits.
The method according to claim 4, characterized in that:

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding strategy MCS;

or,

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

The three bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method of claim 3, wherein when the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs and the 2 One-to-one correspondence between DMRS port groups;

Determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of the uplink PTRS ports being 2, determining an association between the first uplink DMRS port and the first uplink PTRS port in the DMRS port group corresponding to the CW based on the first information field in the DCI. ; The first information field includes 3 bits.
The method according to claim 6, characterized in that:

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of assigned ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

The 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method according to claim 6 or 7, characterized in that, the method further includes:

An association relationship between the second uplink DMRS port and the second uplink PTRS port in the remaining DMRS port group is determined based on the default rule.
The method according to claim 8, characterized in that the default rules include any one of the following:

The second uplink DMRS port is the uplink DMRS port corresponding to the largest port number in the remaining DMRS port group;

or,

The second uplink DMRS port is the uplink DMRS port corresponding to the smallest port number in the remaining DMRS port group;

or,

The second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined method;

or,

The second uplink DMRS port is an uplink DMRS port indicated by the network device.
The method according to claim 9, characterized in that the predefined manner includes:

In the case where the first uplink DMRS port is the G-th uplink DMRS port in one of the DMRS port groups, the second uplink DMRS port is the H-th uplink DMRS port in the remaining DMRS port groups. , H is the remainder of the sum of G and 2 divided by P, P is the minimum number of ports corresponding to the two DMRS port groups, the value of G is a positive integer less than 8, and the values of H and P are both no greater than 4 is a positive integer.
The method according to claim 1, characterized in that:

Under the type 1 layer mapping scheme, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4;

Under the layer mapping scheme of type 2, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4; or, the number of transmission layers corresponding to one CW after layer mapping is greater than 0, and less than or equal to 3; or, the number of transmission layers corresponding to one CW after layer mapping is 1.
The method of claim 11, wherein when the number of CWs is 1, determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of the uplink PTRS ports being 1, determining an association between one of the eight uplink DMRS ports and the uplink PTRS port based on the first information field in the DCI; The first information field includes 3 bits.
The method of claim 11, wherein when the number of CWs is 1, determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of uplink PTRS ports being 2, the association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports is determined based on the first information field in the DCI, so The first information field includes 3 bits; and

The association relationship between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports is determined based on the second information field in the DCI.
The method of claim 11, wherein when the number of CWs is 1, determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of uplink PTRS ports being 2, the association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports is determined based on the first information field in the DCI, so The first information field includes 3 bits; and

The association relationship between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports is determined based on the code point of the second information field in the DCI.
The method according to claim 13 or 14, characterized in that the second information field refers to bits of the MCS field on the DCI except the first information field or reserved bits of other information fields.
The method of claim 11, wherein when the number of CWs is 1, determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of the uplink PTRS ports being 2, determining the first uplink DMRS port and the first uplink PTRS among the eight uplink DMRS ports based on the code point of the first information field in the DCI and the first correspondence. Associations between ports; and

Determine the association between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports based on the code point of the first information domain in the DCI and the second correspondence;

Wherein, the first information field includes 3 bits; the first correspondence is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second correspondence is the mapping between the second uplink DMRS port and the code point corresponding to the first uplink PTRS port. The mapping relationship between the code point corresponding to the uplink PTRS port and the uplink DMRS port.
The method according to claim 3 or 11, characterized in that determining the association between the uplink PTRS port and the uplink DMRS port based on DCI includes:

In response to the number of the uplink PTRS ports being 2, determining an association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports based on the first information field in the DCI, and the first uplink PTRS port. The association relationship between the two uplink DMRS ports and the second uplink PTRS port; the first information field includes 6 bits.
The method of claim 17, wherein the 6 bits include 3 most significant bits (MSB) and 3 least significant bits (LSB);

The three most significant bits are used to indicate the first uplink DMRS port, and the three least significant bits are used to indicate the second uplink DMRS port;

or,

The three most significant bits are used to indicate the second uplink DMRS port, and the three least significant bits are used to indicate the first uplink DMRS port.
A method for determining the relationship between a PTRS port and a DMRS port, characterized in that the method is executed by a network device, and the method includes:

Send downlink control information to the terminal, where the downlink control information is used to indicate the association between the uplink PTRS port and the uplink DMRS port when the terminal adopts a target layer mapping scheme corresponding to n codewords;

Wherein, the maximum number of uplink DMRS ports is 8; the value of n is 1 or 2; and the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.
The method of claim 19, wherein the two codewords include a first codeword and a second codeword; the first codeword corresponds to a first transmission layer number after layer mapping, and the first codeword corresponds to a first transmission layer number. The second codeword corresponds to the second transmission layer number after layer mapping;

Under the layer mapping scheme of type 1, the layer number difference between the first transmission layer number and the second transmission layer number is 0 or 1;

Under the type 2 layer mapping scheme, the layer number difference between the first transmission layer number and the second transmission layer number is any value from 0 to 6.
The method according to claim 20, characterized in that:

Under the type 1 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8;

Under the type 2 layer mapping scheme, the sum of the first transmission layer number and the second transmission layer number is greater than 4 and less than or equal to 8; or, the first transmission layer number and the second transmission layer number are The total number of transmission layers is greater than 3 and less than or equal to 8; or the total number of the first transmission layer number and the second transmission layer number is greater than 1 and less than or equal to 8.
The method according to claim 21, characterized in that when the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs and the 2 One-to-one correspondence between DMRS port groups;

The number of the uplink PTRS ports is 1, and the first information field in the DCI includes 3 bits, and the 3 bits are used to indicate that an uplink DMRS port in the DMRS port group corresponding to the CW is the same as the Association relationship between upstream PTRS ports.
The method according to claim 22, characterized in that:

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the largest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate an uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

The three bits are used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method according to claim 21, characterized in that when the number of CWs is 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs and the 2 One-to-one correspondence between DMRS port groups;

The number of the uplink PTRS ports is 2, and the first information field in the DCI is used to indicate an association between the first uplink DMRS port and the first uplink PTRS port in a DMRS port group corresponding to the CW; The first information field includes 3 bits.
The method according to claim 24, characterized in that:

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

or,

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of assigned ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports when the MCS of the two CWs are the same;

or,

The 3 bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

or,

The 3 bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW.
The method according to claim 19, characterized in that:

Under the type 1 layer mapping scheme, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4;

Under the layer mapping scheme of type 2, the number of transmission layers corresponding to one CW after layer mapping is greater than 0 and less than or equal to 4; or, the number of transmission layers corresponding to one CW after layer mapping is greater than 0, and less than or equal to 3; or, the number of transmission layers corresponding to one CW after layer mapping is 1.
The method of claim 26, wherein when the number of CWs is 1, the number of uplink PTRS ports is 1, and the first information field in the DCI includes 3 bits, so The three bits are used to indicate the association between one uplink DMRS port among the eight uplink DMRS ports and the uplink PTRS port.
The method of claim 26, wherein when the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the 8 The association relationship between the first uplink DMRS port and the first uplink PTRS port among the uplink DMRS ports, the first information field includes 3 bits; the second information field in the DCI is used to indicate the 8 The association relationship between the second uplink DMRS port and the second uplink PTRS port among the uplink DMRS ports.
The method of claim 26, wherein when the number of CWs is 1, the number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the 8 The association relationship between the first uplink DMRS port and the first uplink PTRS port among the uplink DMRS ports, the first information field includes 3 bits; the code point of the second information field in the DCI is used to indicate the The association relationship between the second uplink DMRS port and the second uplink PTRS port among the eight uplink DMRS ports.
The method according to claim 28 or 29, characterized in that the second information field refers to bits of the MCS field on the DCI except the first information field or reserved bits of other information fields.
The method of claim 26, wherein when the number of CWs is 1, the number of uplink PTRS ports is 2, and the code point of the first information field in the DCI is used to indicate The association between the first uplink DMRS port and the first uplink PTRS port among the eight uplink DMRS ports in the first correspondence; the code point of the first information field in the DCI is used to indicate the second correspondence The association between the second uplink DMRS port and the second uplink PTRS port among the 8 uplink DMRS ports;

Wherein, the first information field includes 3 bits; the first correspondence is the mapping relationship between the code point corresponding to the first uplink PTRS port and the uplink DMRS port; the second correspondence is the mapping between the second uplink DMRS port and the code point corresponding to the first uplink PTRS port. The mapping relationship between the code point corresponding to the uplink PTRS port and the uplink DMRS port.
The method according to claim 21 or 26, characterized in that the number of the uplink PTRS ports is 2, the first information field in the DCI includes 6 bits, and the 6 bits are used to indicate the 8 The association relationship between the first uplink DMRS port and the first uplink PTRS port among the uplink DMRS ports, and the association relationship between the second uplink DMRS port and the second uplink PTRS port.
The method according to claim 32, characterized in that the 6 bits include 3 most significant bits and 3 least significant bits;

The three most significant bits are used to indicate the first uplink DMRS port, and the three least significant bits are used to indicate the second uplink DMRS port;

or,

The three most significant bits are used to indicate the second uplink DMRS port, and the three least significant bits are used to indicate the first uplink DMRS port.
A device for determining the relationship between a PTRS port and a DMRS port, characterized in that the device includes:

The first processing module is configured to determine the association between the uplink PTRS port and the uplink DMRS port based on DCI when using a target layer mapping scheme corresponding to n CWs;

Wherein, the maximum number of uplink DMRS ports is 8; the value of n is 1 or 2; and the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.
A device for determining the relationship between a PTRS port and a DMRS port, characterized in that the device includes:

The second sending module is configured to send downlink control information to the terminal. The downlink control information is used to instruct the terminal to use the target layer mapping scheme corresponding to n codewords. The link between the uplink PTRS port and the uplink DMRS port. connection relation;

Wherein, the maximum number of uplink DMRS ports is 8; the value of n is 1 or 2; and the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.
A terminal, characterized in that the terminal includes:

processor;

a transceiver connected to said processor;

Wherein, the processor is configured to load and execute executable instructions to implement the method of determining the relationship between the PTRS port and the DMRS port as described in any one of claims 1 to 18.
A network device, characterized in that the network device includes:

processor;

a transceiver connected to said processor;

Wherein, the processor is configured to load and execute executable instructions to implement the method of determining the relationship between the PTRS port and the DMRS port as described in any one of claims 19 to 33.
A computer-readable storage medium, characterized in that at least one instruction, at least one program, a code set or an instruction set is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the The code set or instruction set is loaded and executed by the processor to implement the method of determining the relationship between the PTRS port and the DMRS port as described in any one of claims 1 to 18, or the method of determining the PTRS as described in any one of claims 19 to 33 Method of relationship between ports and DMRS ports.
A computer program product, characterized in that the computer program product includes computer instructions, and the computer instructions are stored in a computer-readable storage medium; and a processor of the computer device reads the instructions from the computer-readable storage medium. Computer instructions, the processor executes the computer instructions, causing the computer device to perform the method of determining the relationship between the PTRS port and the DMRS port as described in any one of claims 1 to 18, or, as in any one of claims 19 to 33 1. The method for determining the relationship between the PTRS port and the DMRS port.