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

Abstract

The present disclosure discloses a method, device, medium and product for determining the relationship between PTRS port and DMRS port, belonging to the field of communication. The method comprises: determining the association relationship between the uplink PTRS port and the uplink DMRS port based on the DCI in the case of 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; the target layer mapping scheme is a type 1 layer mapping scheme, or a type 2 layer mapping scheme. The method is used to support the related function implementation of the uplink PTRS port corresponding to the maximum 8 antenna ports and the uplink DMRS port under different layer mapping schemes.

Description

[0001] This application claims priority to the patent application with the application number PCT / CN2022 / 084107, the title of which is "Method, device, medium and product for determining relationship between PTRS port and DMRS port", filed on March 30, 2022, the entire content of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present disclosure relates to the field of communication, in particular to a method, device, medium and product for determining relationship between PTRS port and DMRS port. BACKGROUND

[0003] In the 5G New Radio (NR) system, a phase tracking reference signal (PTRS) is designed for the estimation of common phase error (CPE).

[0004] For NR uplink transmission, the communication protocol only supports a maximum of 4-layer transmission. Therefore, in the process of NR uplink transmission, a user terminal (UE) adopts a 1-code word (CW) to 1-to-4-layer mapping scheme; for the above layer mapping scheme, the UE determines one or two uplink DMRS ports associated with the uplink PTRS port from the four uplink DMRS ports, and transmits a demodulation reference signal (DMRS) through a maximum of four antenna ports. SUMMARY

[0005] The present disclosure provides a method, device, medium and product for determining relationship between PTRS port and DMRS port. The technical solution is as follows:

[0006] According to an aspect of the present disclosure, a method for determining relationship between PTRS port and DMRS port is provided, the method is executed by a terminal, and the method comprises:

[0007] In the case of using a target layer mapping scheme corresponding to n CWs, determining the association relationship between the uplink PTRS port and the uplink DMRS port based on the DCI;

[0008] Wherein, the maximum number of uplink DMRS 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.

[0009] According to an aspect of an embodiment of the present disclosure, there is provided a method for determining a relationship between a PTRS port and a DMRS port, the method being performed by a network device, and the method comprises:

[0010] sending, to a terminal, downlink control information, the downlink control information being used to indicate an association relationship between an uplink PTRS port and an uplink DMRS port in a case where a target layer mapping scheme corresponding to n code words is used;

[0011] wherein a maximum number of the uplink DMRS ports is 8; a value of the 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.

[0012] According to another aspect of an embodiment of the present disclosure, there is provided an apparatus for determining a relationship between a PTRS port and a DMRS port, the apparatus comprising:

[0013] a first processing module configured to determine, based on DCI, an association relationship between an uplink PTRS port and an uplink DMRS port in a case where a target layer mapping scheme corresponding to n code words is used;

[0014] wherein a maximum number of the uplink DMRS ports is 8; a value of the 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.

[0015] According to another aspect of an embodiment of the present disclosure, there is provided an apparatus for determining a relationship between a PTRS port and a DMRS port, the apparatus comprising:

[0016] a second sending module configured to send, to a terminal, downlink control information, the downlink control information being used to indicate an association relationship between an uplink PTRS port and an uplink DMRS port in a case where a target layer mapping scheme corresponding to n code words is used;

[0017] wherein a maximum number of the uplink DMRS ports is 8; a value of the 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.

[0018] According to another aspect of an embodiment of the present disclosure, there is provided a terminal, the terminal comprising:

[0019] a processor;

[0020] a transceiver connected to the processor;

[0021] wherein the processor is configured to load and execute executable instructions to implement the method for determining a relationship between a PTRS port and a DMRS port according to the various aspects.

[0022] According to another aspect of the embodiments of the present disclosure, a network device is provided, which comprises:

[0023] a processor;

[0024] a transceiver connected to the processor;

[0025] The processor is configured to load and execute executable instructions to implement the method for determining the relationship between the PTRS port and the DMRS port according to the various aspects described above.

[0026] According to another aspect of the embodiments of the present disclosure, a computer readable storage medium is provided, which stores at least one instruction, at least one program, a code set or an instruction set, which is loaded and executed by a processor to implement the method for determining the relationship between the PTRS port and the DMRS port according to the various aspects described above.

[0027] According to another aspect of the embodiments of the present disclosure, a computer program product (or computer program) is provided, which comprises computer instructions stored in a computer readable storage medium; a processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to make the computer device execute the method for determining the relationship between the PTRS port and the DMRS port according to the various aspects described above.

[0028] According to another aspect of the embodiments of the present disclosure, a chip is provided, which comprises editable logic circuit and / or program instructions, and when the chip is running, is used to implement the method for determining the relationship between the PTRS port and the DMRS port according to the various aspects described above.

[0029] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0030] In the method for determining the relationship between the PTRS port and the DMRS port described above, the terminal determines the uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports based on the downlink control information under the condition of using the target layer mapping scheme corresponding to the n codewords, and the method is used to support the related function implementation of the uplink PTRS port and the uplink DMRS port corresponding to the maximum 8 antenna ports under different layer mapping schemes, for example, to support the terminal to use the uplink PTRS port and the uplink DMRS port corresponding to the 8 antenna ports for co-phase error estimation under different layer mapping schemes.

[0031] It is to be understood that the foregoing general description and the following detailed description are only exemplary and explanatory and are not restrictive of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can also be obtained without creative work based on these drawings.

[0033] Figure 1 is a block diagram of a communication system according to an exemplary embodiment;

[0034] 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;

[0035] Figure 3 is a mapping diagram between a codeword and a transmission layer according to an exemplary embodiment;

[0036] Figure 4 is a mapping diagram between a codeword and a transmission layer according to another exemplary embodiment;

[0037] Figure 5 is a mapping diagram between a codeword and a transmission layer according to another exemplary embodiment;

[0038] Figure 6 is a mapping diagram between a codeword and a transmission layer according to another exemplary embodiment;

[0039] 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;

[0040] 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;

[0041] 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;

[0042] 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;

[0043] 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;

[0044] Figure 12 is a flow chart of a method for determining relationship between PTRS port and DMRS port according to another exemplary embodiment;

[0045] Figure 13 is a flow chart of a method for determining relationship between PTRS port and DMRS port according to another exemplary embodiment;

[0046] Figure 14 is a flow chart of a method for determining relationship between PTRS port and DMRS port according to another exemplary embodiment;

[0047] Figure 15 is a block diagram of an apparatus for determining relationship between PTRS port and DMRS port according to an exemplary embodiment;

[0048] Figure 16 is a block diagram of an apparatus for determining relationship between PTRS port and DMRS port according to another exemplary embodiment;

[0049] Figure 17 is a structural diagram of a terminal according to an exemplary embodiment;

[0050] Figure 18 is a structural diagram of a network device according to an exemplary embodiment. DETAILED DESCRIPTION

[0051] The exemplary embodiments will be described in detail herein below with reference to the drawings. In the following description, the same drawings reference numbers are used to denote the same elements throughout the several figures of the drawings. The embodiments described in the following exemplary embodiments do not represent all the implementations in accordance with this disclosure. Instead, they only represent examples of apparatus and methods in accordance with some aspects of this disclosure as detailed in the appended claims.

[0052] The following description relates to the drawings, in which the same numbers represent the same elements throughout the several figures of the drawings. The embodiments described in the following exemplary embodiments do not represent all the implementations in accordance with the embodiments of this disclosure. Instead, they only represent examples of apparatus and methods in accordance with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0053] The terminology used in the disclosure of the embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting thereof. The use of the singular herein includes the plural unless the context clearly dictates otherwise. The use of the term "and / or" means "and", "or", or both, depending on the context. The use of the terms "a" and "an" and "the" are the singular forms intended to include one or more of what is described.

[0054] It should be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited to these terms. These terms are only used to differentiate one piece of information from another. For example, a first information can also be referred to as a second information, and similarly, a second information can also be referred to as a first information, without departing from the scope of the embodiments. Depending on the context, the word "if' as used herein can be interpreted as "when" or "in response to" or "in the event that", and the word "in response to" as used herein can be interpreted as "in the event of".

[0055] For the purpose of brevity and clarity, the terms "greater than" or "less than" are used herein to represent a size relationship. However, it should be understood by those skilled in the art that the term "greater than" also covers the meaning of "greater than or equal to", and the term "less than" also covers the meaning of "less than or equal to".

[0056] Figure 1 A block diagram of a communication system is shown, which can include an access network 12 and user terminals 14.

[0057] The access network 12 includes a plurality of network devices 120. The network device (also referred to as an access network device) 120 can be a base station, which is a device deployed in an access network to provide wireless communication functions for user terminals (simply referred to as "terminals") 14. The base station 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 devices with base station functions can be different, such as eNodeB or eNB in a Long Term Evolution (LTE) system, gNodeB or gNB in a 5G NR (New Radio) system. As communication technology evolves, the description of "base station" can change. For the convenience of description in the embodiments, the above-mentioned devices providing wireless communication functions for user terminals 14 are collectively referred to as network devices. Optionally, the communication interface between network devices 120 is an Xn interface.

[0058] The user terminal 14 can include various handheld devices, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication functions, as well as various forms of user equipment, mobile stations (MS), terminal devices, and the like. For the convenience of description, the above-mentioned devices are collectively referred to as user terminals. The network device 120 and the user terminal 14 communicate with each other through a certain air interface technology, such as the Uu interface. Optionally, the user terminal 14 supports performing a small data transmission process in an inactive state.

[0059] 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, the uplink communication refers to sending a signal to the network device 120; the downlink communication refers to sending a signal to the user terminal 14.

[0060] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, for example, a Global System of Mobile Communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolved system of the NR system, an LTE-based access to Unlicensed spectrum (LTE-U) system, an NR-U system, a Universal Mobile Telecommunication System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a Wireless Local Area Networks (WLAN), a Wireless Fidelity (WiFi), a next-generation communication system, or other communication systems.

[0061] Generally, a conventional communication system supports a limited number of connections, and is easy to implement. However, with the development of communication technology, a mobile communication system will not only support conventional 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 a Vehicle to Everything (V2X) system. The embodiments of the present disclosure can also be applied to these communication systems.

[0062] Figure 2A flowchart illustrating a method for determining the relationship between PTRS ports and DMRS ports according to an exemplary embodiment of this disclosure is shown. This method is applied to... Figure 1 In the terminal of the communication system shown, the method includes:

[0063] Step 210: When using a 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 takes the value of 1 or 2; the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme.

[0064] For example, the layer mapping scenario for determining the association between the uplink PTRS port and the uplink DMRS port includes any of the following:

[0065] A type 1 layer mapping scheme corresponding to one codeword;

[0066] A type 2 layer mapping scheme corresponding to one codeword;

[0067] A layer mapping scheme of type 1 corresponding to two codewords;

[0068] A layer mapping scheme of type 2 corresponding to two codewords.

[0069] Type 1 layer mapping scheme:

[0070] Taking a maximum total number of transmission layers of 8 as an example, such as Figure 3 As shown, the Type 1 layer mapping scheme includes eight layer mapping schemes corresponding to one codeword and two codewords. Under the Type 1 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. Two codewords include a first codeword and a second codeword; the first codeword corresponds to a first transmission layer after layer mapping, and the second codeword corresponds to a second transmission layer after layer mapping; under the Type 1 layer mapping scheme, the difference between the first and second transmission layers is 0 or 1, and the sum of the first and second transmission layers is greater than 4 and less than or equal to 8. For example, the Type 1 layer mapping schemes corresponding to one codeword (including CW0) include the following four:

[0071] • CW0 is mapped to one transport layer;

[0072] For example, CW0 is mapped to transport layer 1, and the total number of transport layers is 1.

[0073] • CW0 is mapped to two transport layers;

[0074] For example, CW0 is mapped to transport layers 1 and 2, with a total of 2 transport layers.

[0075] • CW0 is mapped to 3 transmission layers;

[0076] For example, CW0 is mapped to transmission layers 1 to 3, and the total number of transmission layers is 3.

[0077] • CW0 is mapped to 4 transmission layers;

[0078] For example, CW0 is mapped to transmission layers 1 to 4, and the total number of transmission layers is 4.

[0079] The type 1 layer mapping scheme corresponding to 2 codewords (including CW0 and CW1) includes the following 4 kinds:

[0080] • CW0 is mapped to 2 transmission layers, and CW1 is mapped to 3 transmission layers;

[0081] For example, CW0 is mapped to transmission layers 1 and 2, and CW1 is mapped to transmission layers 3 to 5, and the total number of transmission layers is 5.

[0082] • CW0 is mapped to 3 transmission layers, and CW1 is mapped to 3 transmission layers;

[0083] For example, CW0 is mapped to transmission layers 1 to 3, and CW1 is mapped to transmission layers 4 to 6, and the total number of transmission layers is 5.

[0084] • CW0 is mapped to 3 transmission layers, and CW1 is mapped to 4 transmission layers;

[0085] For example, CW0 is mapped to transmission layers 1 to 3, and CW1 is mapped to transmission layers 4 to 7, and the total number of transmission layers is 5.

[0086] • CW0 is mapped to 4 transmission layers, and CW1 is mapped to 4 transmission layers.

[0087] For example, CW0 is mapped to transmission layers 1 to 4, and CW1 is mapped to transmission layers 5 to 8, and the total number of transmission layers is 8.

[0088] Type 2 layer mapping scheme:

[0089] For example, as shown in Figure 4 , the type 2 layer mapping scheme includes 16 kinds of layer mapping schemes corresponding to 1 codeword and 2 codewords. Under the type 2 layer mapping scheme, the number of transmission layers corresponding to 1 codeword after layer mapping is greater than 0 and less than or equal to 4.

[0090] For example, as shown in Figure 4 , the type 2 layer mapping scheme corresponding to 1 codeword (including CW0) includes the following 4 kinds:

[0091] • CW0 is mapped to 1 transmission layer;

[0092] For example, CW0 is mapped to transmission layer 1, and the total number of transmission layers is 1.

[0093] • CW0 maps to 2 transport layers;

[0094] For example, CW0 maps to transport layers 1 and 2, and the total number of transport layers is 2.

[0095] • CW0 maps to 3 transport layers;

[0096] For example, CW0 maps to transport layers 1 to 3, and the total number of transport layers is 3.

[0097] • CW0 maps to 4 transport layers;

[0098] For example, CW0 maps to transport layers 1 to 4, and the total number of transport layers is 4.

[0099] The two code words include a first code word and a second code word; the first code word corresponds to a first number of transport layers after layer mapping, and the second code word corresponds to a second number of transport layers after layer mapping; in the type 2 layer mapping scheme, the difference between the first number of transport layers and the second number of transport layers is any value from 0 to 6, and the sum of the first number of transport layers and the second number of transport layers is greater than 1 and less than or equal to 8.

[0100] As can be seen from the description of the type 1 layer mapping scheme above, the difference between the first number of transport layers and the second number of transport layers in the type 1 layer mapping scheme is zero or one, and the difference between the first number of transport layers and the second number of transport layers in the type 2 layer mapping scheme is any value from 0 to 6. Taking the maximum value of the total number of transport layers as 8 layers for example, the difference between the first number of transport layers and the second number of transport layers in the type 2 layer mapping scheme can be any value from zero to six. For example, CW0 maps to transport layer 1, CW1 maps to transport layers 2 to 7, the total number of transport layers is 8, and the difference between the first number of transport layers and the second number of transport layers is six.

[0101] Optionally, the type 2 layer mapping scheme includes at least one of the following schemes:

[0102] • Supports transmission of two code words for transmission of 5 to 8 layers;

[0103] Or,

[0104] • Supports transmission of two code words for transmission of more than 4 layers (including 4 layers);

[0105] Or,

[0106] • Supports transmission of two code words for transmission of more than 2 layers.

[0107] The scheme for supporting transmission of two code words for transmission of 5 to 8 layers in the type 2 layer mapping scheme.

[0108] As Figure 4 shown, in the type 2 layer mapping scheme supports transmission of two codewords for transmission of 5 to 8 layers, the type 2 layer mapping scheme corresponding to 2 codewords (including CW0 and CW1) includes the following 12 kinds:

[0109] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 4 transmission layers;

[0110] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layers 2 to 5, and the total number of transmission layers is 5.

[0111] • CW0 is mapped to 2 transmission layers, and CW1 is mapped to 3 transmission layers;

[0112] For example, CW0 is mapped to transmission layers 1 and 2, and CW1 is mapped to transmission layers 3 to 5, and the total number of transmission layers is 5.

[0113] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 5 transmission layers;

[0114] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layers 2 to 6, and the total number of transmission layers is 6.

[0115] • CW0 is mapped to 2 transmission layers, and CW1 is mapped to 4 transmission layers;

[0116] For example, CW0 is mapped to transmission layers 1 and 2, and CW1 is mapped to transmission layers 3 to 6, and the total number of transmission layers is 6.

[0117] • CW0 is mapped to 3 transmission layers, and CW1 is mapped to 3 transmission layers;

[0118] For example, CW0 is mapped to transmission layers 1 to 3, and CW1 is mapped to transmission layers 4 to 6, and the total number of transmission layers is 6.

[0119] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 6 transmission layers;

[0120] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layers 2 to 7, and the total number of transmission layers is 7.

[0121] • CW0 is mapped to 2 transmission layers, and CW1 is mapped to 5 transmission layers;

[0122] For example, CW0 is mapped to transmission layers 1 and 2, and CW1 is mapped to transmission layers 3 to 7, and the total number of transmission layers is 7.

[0123] • CW0 is mapped to 3 transmission layers, and CW1 is mapped to 4 transmission layers;

[0124] For example, CW0 is mapped to transmission layers 1 to 3, and CW1 is mapped to transmission layers 4 to 7, and the total number of transmission layers is 7.

[0125] • CW0 is mapped to 1 transport layer, and CW1 is mapped to 7 transport layers;

[0126] For example, CW0 is mapped to transport layer 1, and CW1 is mapped to transport layers 2 to 8, and the total number of transport layers is 8.

[0127] • CW0 is mapped to 2 transport layers, and CW1 is mapped to 6 transport layers;

[0128] For example, CW0 is mapped to transport layers 1 and 2, and CW1 is mapped to transport layers 3 to 8, and the total number of transport layers is 8.

[0129] • CW0 is mapped to 3 transport layers, and CW1 is mapped to 5 transport layers;

[0130] For example, CW0 is mapped to transport layers 1 to 3, and CW1 is mapped to transport layers 4 to 8, and the total number of transport layers is 8.

[0131] • CW0 is mapped to 4 transport layers, and CW1 is mapped to 4 transport layers.

[0132] For example, CW0 is mapped to transport layers 1 to 4, and CW1 is mapped to transport layers 5 to 8, and the total number of transport layers is 8.

[0133] The scheme of supporting transmission of two code words for transmission of 4 layers or more (including 4 layers) in the type 2 layer mapping scheme.

[0134] As shown in Table 2, when the type 2 layer mapping scheme supports transmission of two code words for transmission of 4 to 8 layers, the type 2 layer mapping scheme corresponding to the 2 code words (including CW0 and CW1) further includes the following 2 kinds based on Table 1: Figure 5 Figure 4 • CW0 is mapped to 1 transport layer, and CW1 is mapped to 3 transport layers;

[0135] For example, CW0 is mapped to transport layer 1, and CW1 is mapped to transport layers 2 to 4, and the total number of transport layers is 4.

[0136] • CW0 is mapped to 2 transport layers, and CW1 is mapped to 2 transport layers;

[0137] For example, CW0 is mapped to transport layers 1 and 2, and CW1 is mapped to transport layers 3 and 4, and the total number of transport layers is 4.

[0138] The scheme of supporting transmission of two code words for transmission of 2 layers or more in the type 2 layer mapping scheme.

[0139] As shown in Table 3, when the type 2 layer mapping scheme supports transmission of two code words for transmission of 2 to 8 layers, the type 2 layer mapping scheme corresponding to the 2 code words (including CW0 and CW1) further includes the following 2 kinds based on Table 1:

[0140] As shown in Table 3, when the type 2 layer mapping scheme supports transmission of two code words for transmission of 2 to 8 layers, the type 2 layer mapping scheme corresponding to the 2 code words (including CW0 and CW1) further includes the following 2 kinds based on Table 1: Figure 6 ​As shown, in the type 2 layer mapping scheme for supporting transmission of two code words for 2 to 8 layers, the type 2 layer mapping scheme corresponding to 2 code words (including CW0 and CW1) is as follows: Figure 4 In addition to the above 4 types:

[0141] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 1 transmission layer;

[0142] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layer 2, and the total number of transmission layers is 2.

[0143] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 2 transmission layers;

[0144] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layer 2 to 3, and the total number of transmission layers is 3.

[0145] • CW0 is mapped to 1 transmission layer, and CW1 is mapped to 3 transmission layers;

[0146] For example, CW0 is mapped to transmission layer 1, and CW1 is mapped to transmission layer 2 to 4, and the total number of transmission layers is 4.

[0147] • CW0 is mapped to 2 transmission layers, and CW1 is mapped to 2 transmission layers;

[0148] For example, CW0 is mapped to transmission layer 1 and 2, and CW1 is mapped to transmission layer 3 and 4, and the total number of transmission layers is 4.

[0149] In the above different layer mapping scenarios, the terminal determines one or two uplink DMRS ports associated with the uplink PTRS port from the maximum 8 uplink DMRS ports corresponding to the PUSCH / PUCCH allocated by the terminal based on the downlink control information (DCI).

[0150] For example, in response to the number of uplink PTRS ports being 1, the terminal determines one uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports corresponding to the PUSCH allocated by the terminal based on the indication of the information field in the downlink control information.

[0151] For example, the terminal determines, based on an indication of an information field in the downlink control information, a first uplink DMRS port associated with a first uplink PTRS port and a second uplink DMRS port associated with a second uplink PTRS port from the maximum 8 uplink DMRS ports allocated to the PUSCH corresponding to the number 2 of uplink PTRS ports.

[0152] wherein the second uplink PTRS port refers to another one of the 2 uplink PTRS ports other than the first uplink PTRS port; and the second uplink DMRS port refers to another one of the maximum 8 uplink DMRS ports other than the first uplink DMRS port.

[0153] Optionally, the maximum 8 uplink DMRS ports are allocated to the terminal by the network device. For example, the network device allocates all or part of the uplink DMRS ports to the terminal. For example, there are 8 uplink DMRS ports available for the network device to allocate, and the network device allocates part or all of the 8 uplink DMRS ports to the terminal; there are 12 uplink DMRS ports available for the network device to allocate, and the network device allocates part of the 12 uplink DMRS ports to the terminal. Taking the example of allocating 8 uplink DMRS ports to the terminal, the network device allocates all of the 8 uplink DMRS ports to the terminal; or the network device allocates port 1, port 3, port 5 and port 7 of the 8 uplink DMRS ports to the terminal; or the network device allocates port 0 to port 7 of the 12 uplink DMRS ports to the terminal; or the network device allocates port 0, port 2, port 4, port 6, port 8 and port 10 of the 12 uplink DMRS ports to the terminal.

[0154] Optionally, the number of uplink PTRS ports is configured by the network device for the terminal. For example, the terminal determines the number of uplink PTRS ports to be 1 or 2 based on an indication of the downlink control information. For another example, the terminal receives high-layer signaling, such as radio resource control (RRC) signaling, sent by the network device; and determines the number of uplink PTRS ports to be 1 or 2 based on an indication of the high-layer signaling.

[0155] Optionally, the number of uplink PTRS ports is determined by the terminal. For example, in a code book (CB) based PUSCH transmission scenario, the number of uplink PTRS ports is determined in any one of the following ways:

[0156] 1) In the scenario of PUSCH transmission based on CB and with full coherent transmission mode, the terminal determines the number of uplink PTRS ports to be 1 in response to the sounding reference signal resource indicator (SRI) indicating only one sounding reference signal (SRS) resource.

[0157] 2) In the scenario of PUSCH (Physical Uplink Shared Channel) transmission based on CB and with partial coherent or non-coherent transmission mode, the terminal determines the number of uplink PTRS ports to be 1 in response to the number of layers indicated by the transmitted precoding matrix indicator (TPMI) being 1 or 2.

[0158] 3) In the scenario of PUSCH transmission based on CB and with full coherent transmission mode, the terminal determines the number of uplink PTRS ports to be 2 in response to the SRI indicating only one SRS resource.

[0159] 4) In the scenario of PUSCH transmission based on CB and with partial coherent or non-coherent transmission mode, the terminal determines the number of uplink PTRS ports to be 2 in response to the number of layers indicated by the TPMI being 2 or more or 3 or more.

[0160] Exemplarily, the terminal receives downlink control information transmitted on a media access control (MAC) layer.

[0161] Exemplarily, the above-mentioned up to 8 uplink DMRS ports (i.e., the antenna ports corresponding to the DMRS) can be antenna ports mapped to the same antenna panel or different antenna panels; that is, the above-mentioned up to 8 uplink DMRS ports are antenna ports mapped to M antenna panels, M being a positive integer less than or equal to 8. For example, 4 uplink DMRS ports of the 8 uplink DMRS ports are mapped to a first antenna panel, and the remaining 4 uplink DMRS ports of the 8 uplink DMRS ports are mapped to a second antenna panel.

[0162] It should be noted that the above maximum 8 corresponding value ranges from 0 to 8, such as, the maximum 8 uplink DMRS ports means any one of the following 8 cases: 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.

[0163] In summary, the method for determining the relationship between the PTRS port and the DMRS port provided in the embodiment, the terminal determines the uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports based on the downlink control information in the case of using the target layer mapping scheme corresponding to n codewords, which is used to support the related function implementation of the uplink PTRS port and the uplink DMRS port corresponding to the maximum 8 antenna ports under different layer mapping schemes; for example, it is used to support the terminal to use the uplink PTRS port and the uplink DMRS port corresponding to 8 antenna ports for Common Phase Error (CPE) estimation under the type 1 layer mapping scheme; for another example, it is used to support the terminal to use the uplink PTRS port and the uplink DMRS port corresponding to 8 antenna ports for CPE estimation under the type 2 layer mapping scheme.

[0164] Under different layer mapping schemes, the number of CWs is 2, and the maximum 8 uplink DMRS ports are divided into 2 DMRS port groups, 2 CWs and 2 DMRS port groups one-to-one, the first information field in the downlink control information can be defined to indicate the association relationship between the uplink PTRS port and the uplink DMRS port.

[0165] As Figure 7 shown, for the case where the number of uplink PTRS ports is 1, step 210 can be implemented by step 310, as follows:

[0166] Step 310, in response to the number of uplink PTRS ports being 1, determining the association relationship between the uplink PTRS port and the uplink DMRS port in the DMRS port group corresponding to one CW based on the first information field in the DCI.

[0167] 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, based on a first information field in the downlink control information, an association relationship between one uplink DMRS port in the first DMRS port group corresponding to the first CW and the uplink PTRS port; or determines, based on the first information field in the downlink control information, an association relationship between one uplink DMRS port in the second DMRS port group corresponding to the second CW and the uplink PTRS port.

[0168] The first information field includes at most 3 bits. For example, the first information field includes 2 bits, and for another example, the first information field includes 3 bits.

[0169] Optionally, in a case where the number of uplink DMRS ports is 4, the first information field includes 2 bits. Or, in a case where the number of uplink DMRS ports is 8, the first information field includes at most 3 bits.

[0170] For example, the value of M bits on the first information field can be used to indicate the port number of the allocated uplink DMRS port in one DMRS port group; for example, in a case where the first information field includes 2 bits and the port numbers of the four uplink DMRS ports in the two DMRS port groups are 0 to 3, the value of the 2 bits can be used to indicate the port number of the uplink DMRS port.

[0171] Or, the value of M bits on the first information field can be used to indicate the order position of the allocated uplink DMRS port in one DMRS port group; for example, in a case where the first information field includes 3 bits, the allocated uplink DMRS ports in one DMRS port group are port 0, port 2, port 4, port 6, port 8 and port 10 in turn, 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 allocated uplink DMRS ports in one DMRS port group are port 2, port 5, port 8 and port 1 in turn, then “000” indicates port 2, “001” indicates port 5, “010” indicates port 8, and “011” indicates port 1.

[0172] For example, the M bits are used to indicate one uplink DMRS port in the DMRS port group corresponding to the CW with higher Modulation and Coding Scheme (MCS); that is, the first information field is used to indicate one uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS. For example, in the case that the MCS level corresponding to the first CW is higher than the MCS level corresponding to the second CW, the M bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW and associated with the uplink PTRS port.

[0173] Alternatively, the M bits are used to indicate one uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the two CWs are the same; that is, the first information field is used to indicate one uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the two CWs are the same. For example, the uplink DMRS ports in each DMRS port group are allocated by the network device, in the case that 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, the M bits are used to indicate one uplink DMRS port in the first DMRS port group and associated with the uplink PTRS port.

[0174] Alternatively, the M bits are used to indicate one uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the two CWs are the same; that is, the first information field is used to indicate one uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the two CWs are the same. For example, the uplink DMRS ports in each DMRS port group are allocated by the network device, in the case that 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, the M bits are used to indicate one uplink DMRS port in the second DMRS port group and associated with the uplink PTRS port.

[0175] Alternatively, the M bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW; that is, the first information field is used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW.

[0176] Alternatively, the M bits are used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW; that is, the first information field is used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW.

[0177] It should be noted that the "first" in the first CW and the "second" in the second CW are only used to distinguish between two different CWs and do not contain any other meaning. For example, the first CW is the first CW among two CWs, and the second CW is the second CW among two CWs; or, the second CW is the first CW among two CWs, and the first CW is the second CW among two CWs.

[0178] Optionally, M bits are used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW among the two CWs when the MCS of the two CWs are the same; that is, the first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW among the two CWs when the MCS of the two CWs are the same.

[0179] Optionally, 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 maximum value of M is 3, for example, the value of M is 2 or 3.

[0180] Optionally, in the type 1 layer mapping scheme, the first information field includes 2 bits; in the type 2 layer mapping scheme, the first information field includes at most 3 bits. For example, in the case of using the type 1 layer mapping scheme corresponding to 2 CWs, in response to the number of uplink PTRS ports being 1, the association between an uplink DMRS port and an uplink PTRS port in a DMRS port group corresponding to a CW is determined based on the indication of the 2 bits in the first information field; as another example, in the case of using the type 2 layer mapping scheme corresponding to 2 CWs, in response to the number of uplink PTRS ports being 1, the association between an uplink DMRS port and an uplink PTRS port in a DMRS port group corresponding to a CW is determined based on the indication of the 2 or 3 bits in the first information field.

[0181] In summary, the method for determining the relationship between PTRS ports and DMRS ports provided in this embodiment allows the terminal to determine an uplink DMRS port associated with an uplink PTRS port from a maximum of eight uplink DMRS ports based on downlink control information when using a target layer mapping scheme with two codewords. This method supports the association of an uplink PTRS port with one of the eight uplink DMRS ports under the two codewords-based layer mapping scheme.

[0182] like Figure 8 As shown, for the case where the number of uplink PTRS ports is 2, step 210 can be implemented by steps 410 to 420, as follows:

[0183] In step 410, in response to the number of uplink PTRS ports being 2, the association between the first uplink DMRS port in the DMRS port group corresponding to one CW and the first uplink PTRS port is determined based on the first information field in the DCI.

[0184] The 2 CWs include a first CW and a second CW, and the 2 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 2 uplink PTRS ports include a first uplink PTRS port and a second uplink PTRS port; and 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. Illustratively, the terminal determines the association between the first uplink DMRS port in the first DMRS port group corresponding to the first CW and the first uplink PTRS port based on the first information field in the downlink control information; or determines the association between the first uplink DMRS port in the second DMRS port group corresponding to the second CW and the first uplink PTRS port based on the first information field in the downlink control information.

[0185] The first information field includes at most 3 bits. For example, the first information field includes 2 bits, and for another example, the first information field includes 3 bits.

[0186] Optionally, in the case where the number of uplink DMRS ports is 4, the first information field includes 2 bits. Or, in the case where the number of uplink DMRS ports is 8, the first information field includes at most 3 bits.

[0187] Illustratively, the value of the M bits on the first information field can be used to indicate the port number of the uplink DMRS port allocated in one DMRS port group. Or, the value of the M bits on the first information field can be used to indicate the sorting position of the uplink DMRS port allocated in one DMRS port group.

[0188] Illustratively, the M bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS; that is, the first information field is used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS. For example, in the case where the first CW corresponds to a MCS level lower than the MCS level corresponding to the second CW, the M bits are used to indicate the association between the first uplink DMRS port in the second DMRS port group corresponding to the second CW and the first uplink PTRS port.

[0189] Alternatively, the M bits are used to indicate a first uplink DMRS port in a DMRS port group with the largest number of allocated ports in a case that the MCSs of the two CWs are the same; that is, the first information field is used to indicate a first uplink DMRS port in a DMRS port group with the largest number of allocated ports in a case that the MCSs of the two CWs are the same. For example, the uplink DMRS ports in each DMRS port group are allocated by the network device, in a case that the MCS levels of the two CWs are the same and the number of allocated ports in the first DMRS port group is smaller than that in the second DMRS port group, the M bits are used to indicate that the first uplink DMRS port in the second DMRS port group is associated with the first uplink PTRS port.

[0190] Alternatively, the M bits are used to indicate a first uplink DMRS port in a DMRS port group with the smallest number of allocated ports in a case that the MCSs of the two CWs are the same; that is, the first information field is used to indicate a first uplink DMRS port in a DMRS port group with the smallest number of allocated ports in a case that the MCSs of the two CWs are the same. For example, the uplink DMRS ports in each DMRS port group are allocated by the network device, in a case that the MCS levels of the two CWs are the same and the number of allocated ports in the first DMRS port group is smaller than that in the second DMRS port group, the M bits are used to indicate that the first uplink DMRS port in the first DMRS port group is associated with the first uplink PTRS port.

[0191] Alternatively, the M bits are used to indicate a first uplink DMRS port in a first DMRS port group corresponding to the first CW; that is, the first information field is used to indicate a first uplink DMRS port in a first DMRS port group corresponding to the first CW.

[0192] Alternatively, the M bits are used to indicate a first uplink DMRS port in a second DMRS port group corresponding to the second CW; that is, the first information field is used to indicate a first uplink DMRS port in a second DMRS port group corresponding to the second CW.

[0193] It should be noted that the "first" in the first CW and the "second" in the second CW are only used to distinguish the two different CWs, and do not contain other meanings. For example, the first CW is the first one of the two CWs, and the second CW is the second one of the two CWs; or, the second CW is the first one of the two CWs, and the first CW is the second one of the two CWs.

[0194] Optionally, the M bits are used to indicate a first uplink DMRS port in a DMRS port group corresponding to a first of the two CWs in a case that MCSs of the two CWs are same; that is, the first information field is used to indicate a first uplink DMRS port in a DMRS port group corresponding to a first of the two CWs in a case that MCSs of the two CWs are same.

[0195] Optionally, in a case that the number of uplink DMRS ports is 4, the value of M is 2; in a case that the number of uplink DMRS ports is 8, the value of M is maximally 3, such as the value of M is 2 or 3.

[0196] Optionally, under the type 1 layer mapping scheme, the first information field includes 2 bits; under the type 2 layer mapping scheme, the first information field includes 3 bits. For example, in a case that the type 1 layer mapping scheme corresponding to the two CWs is adopted, in response to the number of uplink PTRS ports being 2, based on the indication of the 2 bits of the first information field, the association relationship between the first uplink DMRS port in the DMRS port group corresponding to one CW and the first uplink PTRS port is determined; for another example, in a case that the type 2 layer mapping scheme corresponding to the two CWs is adopted, in response to the number of uplink PTRS ports being 2, based on the indication of the 2 or 3 bits of the first information field, the association relationship between the first uplink DMRS port in the DMRS port group corresponding to one CW and the first uplink PTRS port is determined.

[0197] In step 420, the association relationship between the second uplink DMRS port in the remaining DMRS port group and the second uplink PTRS port is determined based on a default rule.

[0198] The above default rule defines the default association relationship between the second uplink PTRS port and the second uplink DMRS port. The terminal can determine the second uplink DMRS port associated with the second uplink PTRS port from the uplink DMRS ports allocated in the remaining DMRS port group based on the above default rule. Optionally, the above default rule can be pre-configured for the terminal by the network device; or the above default rule can be defined by the protocol.

[0199] The above remaining DMRS port group refers to another DMRS port group in the two DMRS port groups except the DMRS port group in which the first uplink DMRS port is located. For example, the remaining DMRS port group is the first DMRS port group or the second DMRS port group.

[0200] Optionally, the above default rule includes any one of the following:

[0201] The second uplink DMRS port is an uplink DMRS port corresponding to the maximum 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.

[0202] Alternatively, the second uplink DMRS port is an uplink DMRS port corresponding to the minimum port number in the remaining DMRS port group. 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.

[0203] Alternatively, the second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined manner.

[0204] For example, in the case that the first uplink DMRS port is the Gth uplink DMRS port in one DMRS port group, the second uplink DMRS port is the Hth uplink DMRS port in the remaining DMRS port group, H is the remainder of the sum of G and 2 divided by P, P is the minimum port number corresponding to the two DMRS port groups, G is a positive integer less than 8, and H and P are positive integers not greater than 4. H is expressed by the formula: H = (G+2)mod P, mod represents the remainder after division; it should be noted that when (G+2) is divisible by P, H takes the value of P, and the value of H is less than or equal to P.

[0205] 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 5th uplink DMRS port in the second DMRS port group as the first uplink DMRS port, and then determines the (5+2)mod 3 = 1th uplink DMRS port in the first DMRS port group as the second uplink DMRS port based on the predefined manner.

[0206] Alternatively, the second uplink DMRS port is an uplink DMRS port indicated by the network device. For example, the network device indicates one fixed uplink DMRS port in 8 uplink DMRS ports as the second uplink DMRS port.

[0207] In summary, the method for determining the relationship between the PTRS port and the DMRS port provided in the embodiment, in the case of using the target layer mapping scheme corresponding to two codewords, the terminal determines the first uplink DMRS port associated with the first uplink PTRS port from the uplink DMRS port allocated and used in one DMRS port group based on the downlink control information, and determines the second uplink DMRS port associated with the second uplink PTRS port from the uplink DMRS port allocated and used in another DMRS port group based on the default rule, to support the one-to-one correspondence between the two uplink DMRS ports and the two uplink PTRS ports when using up to 8 uplink DMRS ports under the layer mapping scheme corresponding to two codewords.

[0208] 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 in up to 8 uplink DMRS ports.

[0209] As shown in Figure 9 For the case where the number of uplink PTRS ports is 1, step 210 can be implemented by step 510, as follows:

[0210] Step 510, in response to the number of uplink PTRS ports being 1, determines the association relationship between one of up to 8 uplink DMRS ports and the uplink PTRS port based on the first information field in the downlink control information.

[0211] Optionally, in the case where 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 association relationship between one of the 4 uplink DMRS ports and the uplink PTRS port. For example, the network device allocates and uses ports 0 to 3 in the uplink DMRS port for 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 3.

[0212] Optionally, in the case where the number of uplink DMRS ports is 8, the first information field includes up to 3 bits, and the up to 3 bits in the first information field are used to indicate the association relationship between one of the 8 uplink DMRS ports and the uplink PTRS port. For example, the network device allocates and uses ports 4 to 11 in the uplink DMRS port for the terminal, "000" is used to indicate port 4, "001" is used to indicate port 5, "010" is used to indicate port 6, "011" is used to indicate 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.

[0213] In summary, the method for determining the relationship between PTRS ports and DMRS ports provided in this embodiment allows the terminal to determine the uplink DMRS port associated with the uplink PTRS port from a maximum of eight uplink DMRS ports allocated and used by the terminal based on an information field in the downlink control information when using a target layer mapping scheme corresponding to one codeword. This supports one uplink DMRS port corresponding to one uplink PTRS port when using a maximum of eight uplink DMRS ports under the target layer mapping scheme corresponding to one codeword.

[0214] like Figure 10 As shown, for the case where the number of uplink PTRS ports is 2, step 210 can be implemented by step 610, as follows:

[0215] 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 a maximum of 8 uplink DMRS ports based on the first information field in the DCI; and determine the association between the second uplink DMRS port and the second uplink PTRS port among a maximum of 8 uplink DMRS ports based on the second information field in the DCI.

[0216] The two uplink PTRS ports include a first uplink PTRS port and a second uplink PTRS port. When the number of uplink DMRS ports is four, the first information field and the second information field each include two bits. Based on the indication of the two bits in the first information field, the terminal determines the first uplink DMRS port from the four uplink DMRS ports; based on the indication of the two bits in the second information field, it determines the second uplink DMRS port from the four uplink DMRS ports. The second uplink DMRS port refers to the other uplink DMRS ports among the four uplink DMRS ports besides the first uplink DMRS port.

[0217] When the number of uplink DMRS ports is 8, the first information field and the second information field each include up to 3 bits. Based on the indication of up to 3 bits in the first information field, the terminal determines the first uplink DMRS port from the 8 uplink DMRS ports; based on the indication of up to 3 bits in the second information field, the terminal determines the second uplink DMRS port from the 8 uplink DMRS ports. The second uplink DMRS port refers to the other uplink DMRS ports among the 8 uplink DMRS ports besides the first uplink DMRS port.

[0218] Optionally, the first information field mentioned above is the PTRS-DMRS association field (i.e., the PTRS-DMRS association field).

[0219] Optionally, the second information field refers to bits of a MCS field or reserved codepoints of other information fields on the DCI in addition to the first information field.

[0220] As shown in FIG. 7, for the case that the number of uplink PTRS ports is 2, step 210 can also be implemented by step 710, as shown below. Figure 11

[0221] In step 710, in response to the number of uplink PTRS ports being 2, the terminal determines the association between the first uplink DMRS port and the first uplink PTRS port from the first information field in the DCI, and determines the association between the second uplink DMRS port and the second uplink PTRS port from the codepoint of the second information field in the DCI.

[0222] The first information field includes M bits, and M is 1 or 2. For example, the second information field includes M bits, and the codepoint of the M bits is used to indicate 2 M uplink DMRS ports, and M is a positive integer.

[0223] The 2 uplink PTRS ports include a first uplink PTRS port and a second uplink PTRS port. In the case that the number of uplink DMRS ports is 4, the first information field and the second information field each include 2 bits, the terminal determines the first uplink DMRS port from the 4 uplink DMRS ports based on the indication of the 2 bits in the first information field, and determines the second uplink DMRS port from the 4 uplink DMRS ports based on the codepoint of the 2 bits in the second information field and the corresponding relationship, the second uplink DMRS port being the other uplink DMRS port in addition to the first uplink DMRS port from the 4 uplink DMRS ports, and the corresponding relationship being the association between the second uplink PTRS port corresponding to the codepoint of the second information field and the uplink DMRS port.

[0224] In the case that the number of uplink DMRS ports is 8, the first information field and the second information field each include at most 3 bits, the terminal determines the first uplink DMRS port from the 8 uplink DMRS ports based on the indication of the at most 3 bits in the first information field, and determines the second uplink DMRS port from the 8 uplink DMRS ports based on the codepoint of the at most 3 bits in the second information field and the corresponding relationship, the second uplink DMRS port being the other uplink DMRS port in addition to the first uplink DMRS port from the 8 uplink DMRS ports, and the corresponding relationship being the association between the second uplink PTRS port corresponding to the codepoint of the second information field and the uplink DMRS port.

[0225] ​For example, as shown in Table 1, taking M as 2, a 2-bit code point can represent 4 uplink DMRS ports. When the code point value is "00", the second uplink PTRS port is associated with uplink DMRS port 3 in the correspondence; when the code point value is "01", the second uplink PTRS port is associated with uplink DMRS port 2 in the correspondence; when the code point value is "10", the second uplink PTRS port is associated with uplink DMRS port 1 in the correspondence; and when the code point value is "11", the second uplink PTRS port is associated with uplink DMRS port 0 in the correspondence.

[0226] Table 1

[0227] Value of codepoint Uplink DMRS port associated with second uplink PTRS port 00 Uplink DMRS port 3 01 Uplink DMRS port 2 10 Uplink DMRS port 1 11 Uplink DMRS port 0

[0228] Optionally, the first information field mentioned above is a PTRS-DMRS association field.

[0229] Optionally, the second information field refers to the bits of the MCS field other than the first information field on the DCI, or reserved bits of other information fields.

[0230] Optionally, the mapping relationship is defined by the network device; or, the mapping relationship is predefined.

[0231] Optionally, M is obtained from a higher-level configuration, or M is obtained through predefinition.

[0232] like Figure 12 As shown, for the case where the number of uplink PTRS ports is 2, step 210 can also be implemented by step 810, as follows:

[0233] Step 810: 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 a maximum of 8 uplink DMRS ports based on the code points of the first information field in the DCI and the first correspondence; and determine the association between the second uplink DMRS port and the second uplink PTRS port among a maximum of 8 uplink DMRS ports based on the code points of the first information field in the DCI and the second correspondence.

[0234] The first information field includes M bits, where M is either 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 code point corresponding to the second uplink PTRS port and the uplink DMRS port.

[0235] For example, M-bit code points are used to indicate 2 Meach of the association combinations corresponds to one uplink DMRS port associated with the first uplink PTRS port and one uplink DMRS port associated with the second uplink PTRS port.

[0236] As shown in Table 2, taking the value of M as 3 as an example, when the value of the codepoint is "000", in the first correspondence relationship, the uplink DMRS port 0 is associated with the uplink PTRS port 0 (i.e., the first uplink PTRS port), and in the second correspondence relationship, the uplink DMRS port 4 is associated with the uplink PTRS port 1 (i.e., the second uplink PTRS port); when the value of the codepoint is "011", in the first correspondence relationship, the uplink DMRS port 3 is associated with the uplink PTRS port 0, and in the second correspondence relationship, the uplink DMRS port 5 is associated with the uplink PTRS port 1; when the value of the codepoint is "110", in the first correspondence relationship, the uplink DMRS port 6 is associated with the uplink PTRS port 0, and in the second correspondence relationship, the uplink DMRS port 3 is associated with the uplink PTRS port 1.

[0237] Table 2

[0238]

[0239] Exemplarily, the maximum 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 allocated to correspond to the first DMRS port group, and the second uplink PTRS port is allocated to correspond to the second DMRS port group; each of the association combinations corresponds to one uplink DMRS port in the first DMRS port group associated with the first uplink PTRS port and one uplink DMRS port in the second DMRS port group associated with the second uplink PTRS port.

[0240] 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 codepoint is "001", in the first correspondence relationship, the uplink DMRS port 2 is associated with the uplink PTRS port 0, and in the second correspondence relationship, the uplink DMRS port 3 is associated with the uplink PTRS port 1; when the value of the codepoint is "100", in the first correspondence relationship, the uplink DMRS port 0 is associated with the uplink PTRS port 0, and in the second correspondence relationship, the uplink DMRS port 3 is associated with the uplink PTRS port 1; when the value of the codepoint is "111", in the first correspondence relationship, the uplink DMRS port 6 is associated with the uplink PTRS port 0, and in the second correspondence relationship, the uplink DMRS port 1 is associated with the uplink PTRS port 1.

[0241] Table 3

[0242]

[0243] Optionally, the first correspondence and the second correspondence are defined by the network device; or, the first correspondence and the second correspondence are predefined.

[0244] Optionally, the M is configured by a higher layer, or the M is predefined.

[0245] Optionally, the first information field is a PTRS-DMRS association field.

[0246] In conclusion, the method for determining the relationship between the PTRS port and the DMRS port provided by the embodiment, in the case of using the target layer mapping scheme corresponding to one code word, the terminal determines 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 based on one or two information fields in the downlink control information, to support the one-to-one correspondence between the two uplink DMRS ports and the two uplink PTRS ports when using the maximum 8 uplink DMRS ports under the layer mapping scheme corresponding to one code word.

[0247] Under different layer mapping schemes, when the number of CWs is 1 or 2, one information field in the downlink control information can be defined to indicate the uplink DMRS port associated with the uplink PTRS port in the maximum 8 uplink DMRS ports.

[0248] As shown in FIG. 9, for the case where the number of uplink PTRS ports is 2, step 210 can be implemented by step 910, as shown below. Figure 13

[0249] Step 910, in response to the number of uplink PTRS ports being 2, determining the association relationship between the first uplink DMRS port and the first uplink PTRS port and the association relationship between the second uplink DMRS port and the second uplink PTRS port in the maximum 8 uplink DMRS ports based on the first information field in the DCI.

[0250] In the case where the number of uplink DMRS ports is 2 M , the first information field includes 2M or 2(M-1) bits, and M is 2 or 3. Optionally, the M most significant bits (MSB) are used to indicate the first uplink DMRS port in the 2 M uplink DMRS ports, and the M least significant bits (LSB) are used to indicate the second uplink DMRS port in the 2 M uplink DMRS ports; or, the M most significant bits are used to indicate the first uplink DMRS port in the 2 M ​a second uplink DMRS port of the M uplink DMRS ports, M least significant bits are used to indicate 2 M a first uplink DMRS port of the M uplink DMRS ports.

[0251] For example, 3 bits of the most significant bits are used to indicate one uplink DMRS port (i.e., the first uplink DMRS port) associated with the first uplink PTRS port of the 8 uplink DMRS ports; 2 bits of the least significant bits are used to indicate another uplink DMRS port (i.e., the second uplink DMRS port) associated with the second uplink PTRS port of the 8 uplink DMRS ports.

[0252] For example, the 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 can include 4 uplink DMRS ports. Wherein, 2 bits of the most significant bits are used to indicate one uplink DMRS port (i.e., the first uplink DMRS port) associated with the first uplink PTRS port of the first DMRS port group; 2 bits of the least significant bits are used to indicate one uplink DMRS port (i.e., the second uplink DMRS port) associated with the second uplink PTRS port of the second DMRS port group. Wherein, the second DMRS port group is one DMRS port group other than the first DMRS port group of the two DMRS port groups.

[0253] As shown in Table 4, in the case that the number of uplink DMRS ports is 4 and the first information field includes 4 bits, the terminal determines, in response to the 4 bits being "0001", that the first uplink DMRS port associated with the first uplink PTRS port 0 is the uplink DMRS port 0 and the second uplink DMRS port associated with the second uplink PTRS port 1 is the uplink DMRS port 1; the terminal determines, in response to the 4 bits being "0110", that the first uplink DMRS port associated with the first uplink PTRS port 0 is the uplink DMRS port 1 and the second uplink DMRS port associated with the second uplink PTRS port 1 is the uplink DMRS port 2; the terminal determines, in response to the 4 bits being "1011", that the first uplink DMRS port associated with the first uplink PTRS port 0 is the uplink DMRS port 2 and the second uplink DMRS port associated with the second uplink PTRS port 1 is the uplink DMRS port 3; the terminal determines, in response to the 4 bits being "1100", that the first uplink DMRS port associated with the first uplink PTRS port 0 is the uplink DMRS port 3 and the second uplink DMRS port associated with the second uplink PTRS port 1 is the uplink DMRS port 0.

[0254] Table 4

[0255]

[0256] Optionally, the first information field is a PTRS-DMRS association field.

[0257] In summary, the method for determining the relationship between the PTRS port and the DMRS port provided by the embodiment can 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 by the terminal for use based on one information field in the downlink control information in the case of using the target layer mapping scheme corresponding to 1 or 2 codewords, which can simultaneously support two uplink DMRS ports corresponding to two uplink PTRS ports when using the maximum 8 uplink DMRS ports in the layer mapping scheme corresponding to 1 codeword and two uplink DMRS ports corresponding to two uplink PTRS ports when using the maximum 8 uplink DMRS ports in the layer mapping scheme corresponding to 2 codewords.

[0258] Figure 14 A flow chart of the method for determining the relationship between the PTRS port and the DMRS port provided by one exemplary embodiment of the disclosure is shown, which is applied to Figure 1 The network device of the communication system is shown, and the method comprises:

[0259] Step 1010, sending the downlink control information to the terminal, the downlink control information being used to indicate the association relationship between the uplink PTRS port and the uplink DMRS port in the case of using the 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; the target layer mapping scheme is the layer mapping scheme of type 1, or the layer mapping scheme of type 2.

[0260] Each type of layer mapping scheme includes two cases of the number of codewords being 1 and 2:

[0261] First, for the layer mapping scheme of type 1, in the case of the number of codewords being 1, the number of transmission layers corresponding to 1 codeword after layer mapping is greater than 0 and less than or equal to 4; in the case of the number of codewords being 2, the 2 codewords include a first codeword and a second codeword, the first codeword corresponds to a first number of transmission layers after layer mapping, the second codeword corresponds to a second number of transmission layers after layer mapping, the difference between the first number of transmission layers and the second number of transmission layers is 0 or 1, and the sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8.

[0262] Second, for the layer mapping scheme of type 2, in the case of the number of codewords being 1, the number of transmission layers corresponding to the layer mapping of the 1 codeword is greater than 0 and less than or equal to 4; in the case of the number of codewords being 2, the 2 codewords include a first codeword and a second codeword, the first codeword corresponds to a first number of transmission layers after layer mapping, and the second codeword corresponds to a second number of transmission layers after layer mapping, then the difference between the first number of transmission layers and the second number of transmission layers is any value in 0 to 6, and the sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8.

[0263] Alternatively, for the layer mapping scheme of type 2, in the case of the number of codewords being 1, the number of transmission layers corresponding to the layer mapping of the 1 codeword is greater than 0 and less than or equal to 3; in the case of the number of codewords being 2, the 2 codewords include a first codeword and a second codeword, the first codeword corresponds to a first number of transmission layers after layer mapping, and the second codeword corresponds to a second number of transmission layers after layer mapping, then the difference between the first number of transmission layers and the second number of transmission layers is any value in 0 to 6, and the sum of the first number of transmission layers and the second number of transmission layers is greater than 3 and less than or equal to 8.

[0264] Alternatively, for the layer mapping scheme of type 2, in the case of the number of codewords being 1, the number of transmission layers corresponding to the layer mapping of the 1 codeword is 1; in the case of the number of codewords being 2, the 2 codewords include a first codeword and a second codeword, the first codeword corresponds to a first number of transmission layers after layer mapping, and the second codeword corresponds to a second number of transmission layers after layer mapping, then the difference between the first number of transmission layers and the second number of transmission layers is any value in 0 to 6, and the sum of the first number of transmission layers and the second number of transmission layers is greater than 1 and less than or equal to 8.

[0265] In the above different layer mapping schemes, the number of codewords is 2, and the network device can indicate the uplink PTRS port association relationship in the following any one way:

[0266] The number of uplink PTRS ports is 1, the first information field in the DCI includes M bits, and the M bits are used to indicate the association relationship between one uplink DMRS port in the DMRS port group corresponding to one CW and the uplink PTRS port.

[0267] Optionally, the M bits are used to indicate one uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS, that is, the first information field is used to indicate one uplink DMRS port in the DMRS port group corresponding to the CW with a higher MCS.

[0268] Alternatively, the M bits are used to indicate one uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the two CWs are the same, i.e., the first information field is used to indicate one uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the two CWs are the same.

[0269] Alternatively, the M bits are used to indicate one uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the two CWs are the same, i.e., the first information field is used to indicate one uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the two CWs are the same.

[0270] Alternatively, the M bits are used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW, i.e., the first information field is used to indicate one uplink DMRS port in the first DMRS port group corresponding to the first CW.

[0271] Alternatively, the M bits are used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW, i.e., the first information field is used to indicate one uplink DMRS port in the second DMRS port group corresponding to the second CW.

[0272] Alternatively, the M bits are used to indicate one uplink DMRS port in the DMRS port group corresponding to the first one of the two CWs in the case that the MCSs of the two CWs are the same, i.e., the first information field is used to indicate one uplink DMRS port in the DMRS port group corresponding to the first one of the two CWs in the case that the MCSs of the two CWs are the same.

[0273] The first information field includes at most 3 bits.

[0274] Optionally, in the case that the number of uplink DMRS ports is 4, the value of M is 2; in the case that the number of uplink DMRS ports is 8, the value of M is at most 3, such as 2 or 3.

[0275] Optionally, under the layer mapping scheme of type 1, the first information field includes 2 bits; under the layer mapping scheme of type 2, the first information field includes at most 3 bits. For example, in the case of type 1 layer mapping scheme corresponding to 2 CWs, and the number of uplink PTRS ports is 1, based on 2 bits of the first information field, the association relationship between one uplink DMRS port in the DMRS port group corresponding to one CW and the uplink PTRS port is indicated; for another example, in the case of type 2 layer mapping scheme corresponding to 2 CWs, and the number of uplink PTRS ports is 2, based on 2 or 3 bits of the first information field, the association relationship between one uplink DMRS port in the DMRS port group corresponding to one CW and the uplink PTRS port is indicated.

[0276] • The number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate the association relationship between the first uplink DMRS port in the DMRS port group corresponding to one CW and the first uplink PTRS port; the first information field includes M bits.

[0277] Optionally, the M bits are used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS, that is, the first information field is used to indicate the first uplink DMRS port in the DMRS port group corresponding to the CW with higher MCS;

[0278] Alternatively, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the 2 CWs are the same, that is, the first information field is used to indicate the first uplink DMRS port in the DMRS port group with the largest number of allocated ports in the case that the MCSs of the 2 CWs are the same;

[0279] Alternatively, the M bits are used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the 2 CWs are the same, that is, the first information field is used to indicate the first uplink DMRS port in the DMRS port group with the smallest number of allocated ports in the case that the MCSs of the 2 CWs are the same;

[0280] Alternatively, the M bits are used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW, that is, the first information field is used to indicate the first uplink DMRS port in the first DMRS port group corresponding to the first CW;

[0281] Alternatively, the M bits are used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW, that is, the first information field is used to indicate the first uplink DMRS port in the second DMRS port group corresponding to the second CW;

[0282] Alternatively, the M bits are used to indicate a first uplink DMRS port in a DMRS port group corresponding to a first of the two CWs in a case that MCSs of the two CWs are same, i.e., the first information field is used to indicate a first uplink DMRS port in a DMRS port group corresponding to a first of the two CWs in a case that MCSs of the two CWs are same.

[0283] The first information field includes at most 3 bits.

[0284] Optionally, in a case that the number of uplink DMRS ports is 4, the value of M is 2; in a case that the number of uplink DMRS ports is 8, the value of M is at most 3, such as the value of M is 2 or 3.

[0285] Optionally, under the layer mapping scheme of type 1, the first information field includes 2 bits; under the layer mapping scheme of type 2, the first information field includes at most 3 bits. For example, in a case that the layer mapping scheme of type 1 corresponding to 2 CWs is adopted and the number of uplink PTRS ports is 2, based on the 2 bits of the first information field, an association relationship between a first uplink DMRS port in a DMRS port group corresponding to one CW and a first uplink PTRS port is indicated; for another example, in a case that the layer mapping scheme of type 2 corresponding to 2 CWs is adopted and the number of uplink PTRS ports is 2, based on the 2 or 3 bits of the first information field, an association relationship between a first uplink DMRS port in a DMRS port group corresponding to one CW and a first uplink PTRS port is indicated.

[0286] Optionally, the network device pre-configures a default rule for the terminal, and the default rule includes any one of the following:

[0287] The second uplink DMRS port is an uplink DMRS port corresponding to a maximum port number in the remaining DMRS port group;

[0288] Alternatively, the second uplink DMRS port is an uplink DMRS port corresponding to a minimum port number in the remaining DMRS port group;

[0289] Alternatively, the second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined manner;

[0290] Alternatively, the second uplink DMRS port is an uplink DMRS port indicated by the network device.

[0291] Optionally, the predefined method includes: when the first uplink DMRS port is the Gth uplink DMRS port in a DMRS port group, the second uplink DMRS port is the Hth uplink DMRS port in the remaining DMRS port groups, where 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, G is a positive integer less than 8, and H and P are both positive integers not greater than 4.

[0292] Under the different layer mapping schemes mentioned above, the number of codewords is 1, and the network device can indicate the uplink PTRS port association in any of the following ways:

[0293] With one CW, there is one uplink PTRS port. The first information field in the DCI consists of M bits, which are used to indicate 2. M The association between one of the uplink DMRS ports and the uplink PTRS port.

[0294] With one CW, there are two uplink PTRS ports. The first information field in the DCI is used to indicate the number of ports. M The association between the first uplink DMRS port and the first uplink PTRS port in the 2 uplink DMRS ports; the second information field in the DCI is used to indicate 2 M The association between the second uplink DMRS port and the second uplink PTRS port in the uplink DMRS ports; wherein, the first information field includes M bits.

[0295] Optionally, the second information field refers to the bits of the MCS field other than the first information field on the DCI, or reserved bits of other information fields.

[0296] With one CW, there are two uplink PTRS ports. The first information field in the DCI is used to indicate the number of ports. M The association between the first uplink DMRS port and the first uplink PTRS port in the uplink DMRS ports; the code points in the second information field of the DCI are used to indicate 2 M The association between the second uplink DMRS port and the second uplink PTRS port in the uplink DMRS ports; wherein, the first information field includes M bits.

[0297] Optionally, the second information field refers to the bits of the MCS field other than the first information field on the DCI, or reserved bits of other information fields.

[0298] • With one CW, there are two uplink PTRS ports. The code point in the first information field of the DCI is used to indicate the two in the first correspondence.M an association relationship between a first uplink DMRS port of the one or more uplink DMRS ports and a first uplink PTRS port; and a codepoint of a first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port of the one or more uplink DMRS ports and a second uplink PTRS port. M an association relationship between a first uplink DMRS port of the one or more uplink DMRS ports and a first uplink PTRS port; and a codepoint of a first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port of the one or more uplink DMRS ports and a second uplink PTRS port.

[0299] In the above different layer mapping schemes, the number of code words is 1 or 2, and the manner in which the network device indicates the uplink PTRS port association relationship can include:

[0300] · the number of uplink PTRS ports is 2, the first information field in the DCI includes 2M bits, and the 2M bits are used to indicate an association relationship between a first uplink DMRS port of the one or more uplink DMRS ports and a first uplink PTRS port, and an association relationship between a second uplink DMRS port of the one or more uplink DMRS ports and a second uplink PTRS port. M an association relationship between a first uplink DMRS port of the one or more uplink DMRS ports and a first uplink PTRS port; and a codepoint of a first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port of the one or more uplink DMRS ports and a second uplink PTRS port.

[0301] 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.

[0302] Optionally, the value of M is 2 or 3.

[0303] Optionally, the first information field is a PTRS-DMRS association field.

[0304] In summary, the method for determining the relationship between the PTRS port and the DMRS port provided in this embodiment, the network device sends the downlink control information to the terminal, so that the terminal determines the uplink DMRS port associated with the uplink PTRS port from the maximum 8 uplink DMRS ports based on the downlink control information in the case of using the target layer mapping scheme corresponding to the n code words. This method is used to support the related function implementation of the uplink PTRS port corresponding to the maximum 8 antenna ports and the uplink DMRS port under different layer mapping schemes, for example, to support the terminal to use the uplink PTRS port corresponding to the 8 antenna ports and the uplink DMRS port for co-phase error estimation under different layer mapping schemes.

[0305] Figure 15A block diagram of an apparatus for determining the relationship between a PTRS port and a DMRS port is shown, which is provided by one exemplary embodiment of the present disclosure, and can be implemented by software, hardware or a combination of both, and can be part or all of a UE, and the apparatus comprises:

[0306] The first processing module 1110 is configured to determine the association relationship between the uplink PTRS port and the uplink DMRS port based on the DCI in the case of using a target layer mapping scheme corresponding to n CWs.

[0307] The maximum number of uplink DMRS 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.

[0308] In some embodiments, the 2 codewords include a first codeword and a second codeword; the first codeword corresponds to a first number of transmission layers after layer mapping, and the second codeword corresponds to a second number of transmission layers after layer mapping.

[0309] In the type 1 layer mapping scheme, the difference in the number of layers between the first number of transmission layers and the second number of transmission layers is 0 or 1.

[0310] In the type 2 layer mapping scheme, the difference in the number of layers between the first number of transmission layers and the second number of transmission layers is any value from 0 to 6.

[0311] In some embodiments, in the type 1 layer mapping scheme, the sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8.

[0312] In the type 2 layer mapping scheme, the sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8; or, the sum of the first number of transmission layers and the second number of transmission layers is greater than 3 and less than or equal to 8; or, the sum of the first number of transmission layers and the second number of transmission layers is greater than 1 and less than or equal to 8.

[0313] In some embodiments, in the case of the number of CWs being 2, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs correspond to the 2 DMRS port groups one by one.

[0314] The first processing module 1110 is configured to determine the association relationship between one uplink DMRS port in the DMRS port group corresponding to one CW and the uplink PTRS port based on a first information field in the DCI in response to the number of uplink PTRS ports being 1; the first information field includes at most 3 bits.

[0315] In some embodiments, the first information field is used to indicate one uplink DMRS port in a DMRS port group corresponding to the CW with a higher MCS.

[0316] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group with the largest number of allocated ports when the MCSs of the two CWs are the same.

[0317] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group with the smallest number of allocated ports when the MCSs of the two CWs are the same.

[0318] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group corresponding to the first CW among the two CWs when the MCSs of the two CWs are the same.

[0319] Alternatively, the first information field is used to indicate one uplink DMRS port in a first DMRS port group corresponding to the first CW.

[0320] Alternatively, the first information field is used to indicate one uplink DMRS port in a second DMRS port group corresponding to the second CW.

[0321] In some embodiments, the first information field includes 2 bits under the type 1 layer mapping scheme.

[0322] The first information field includes at most 3 bits under the type 2 layer mapping scheme.

[0323] 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 one by one.

[0324] The first processing module 1110 is configured to, in response to the number of uplink PTRS ports being 2, determine an association relationship between a first uplink DMRS port in a DMRS port group corresponding to a CW and a first uplink PTRS port based on a first information field in the DCI. The first information field includes at most 3 bits.

[0325] In some embodiments, the first information field is used to indicate the first uplink DMRS port in a DMRS port group corresponding to the CW with a higher MCS.

[0326] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group with the largest number of allocated ports when the MCSs of the two CWs are the same.

[0327] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group with the minimum number of allocated ports when the MCSs of the two CWs are the same.

[0328] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group corresponding to a first CW of the two CWs when the MCSs of the two CWs are the same.

[0329] Alternatively, the first information field is used to indicate the first uplink DMRS port in a first DMRS port group corresponding to the first CW.

[0330] Alternatively, the first information field is used to indicate the first uplink DMRS port in a second DMRS port group corresponding to the second CW.

[0331] In some embodiments, the first information field includes 2 bits under the type 1 layer mapping scheme.

[0332] The first information field includes at most 3 bits under the type 2 layer mapping scheme.

[0333] In some embodiments, the first processing module 1110 is configured to determine, based on a default rule, an association between a second uplink DMRS port and a second uplink PTRS port in a remaining DMRS port group.

[0334] In some embodiments, the default rule includes any one of the following:

[0335] The second uplink DMRS port is an uplink DMRS port corresponding to a maximum port number in the remaining DMRS port group.

[0336] Alternatively, the second uplink DMRS port is an uplink DMRS port corresponding to a minimum port number in the remaining DMRS port group.

[0337] Alternatively, the second uplink DMRS port is an uplink DMRS port in the remaining DMRS port group determined based on a predefined manner.

[0338] Alternatively, the second uplink DMRS port is an uplink DMRS port indicated by a network device.

[0339] In some embodiments, the predefined manner includes:

[0340] In a case where the first uplink DMRS port is a Gth uplink DMRS port in the DMRS port group, the second uplink DMRS port is an Hth uplink DMRS port in the remaining DMRS port group, H is a remainder of a sum of G and 2 divided by P, P is a minimum port number corresponding to the two DMRS port groups, G is a positive integer less than 8, and H and P are positive integers not greater than 4.

[0341] In some embodiments, under the type 1 layer mapping scheme, the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 4.

[0342] Under the type 2 layer mapping scheme, the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 4; or the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 3; or the number of transmission layers corresponding to the one CW after layer mapping is 1.

[0343] In some embodiments, the first processing module 1110 is configured to, in a case where the number of CWs is 1, in response to the number of uplink PTRS ports being 1, determine an association relationship between one of the eight uplink DMRS ports and the uplink PTRS port based on a first information field in the DCI; the first information field includes 3 bits.

[0344] In some embodiments, the first processing module 1110 is configured to, in a case where the number of CWs is 1, in response to the number of uplink PTRS ports being 2, determine an association relationship between a first uplink DMRS port in the eight uplink DMRS ports and a first uplink PTRS port based on a first information field in the DCI, the first information field including 3 bits; and determine an association relationship between a second uplink DMRS port in the eight uplink DMRS ports and a second uplink PTRS port based on a second information field in the DCI.

[0345] In some embodiments, the first processing module 1110 is configured to, in a case where the number of CWs is 1, in response to the number of uplink PTRS ports being 2, determine an association relationship between a first uplink DMRS port in the eight uplink DMRS ports and a first uplink PTRS port based on a first information field in the DCI, the first information field including 3 bits; and determine an association relationship between a second uplink DMRS port in the eight uplink DMRS ports and a second uplink PTRS port based on a code point of a second information field in the DCI.

[0346] In some embodiments, the second information field refers to a bit of an MCS field or a reserved bit of another information field on the DCI in addition to the first information field.

[0347] In some embodiments, the first processing module 1110 is configured to, in the case that the number of the CWs is 1, determine, in response to the number of the uplink PTRS ports being 2, an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports based on a code point of the first information field in the DCI and a first correspondence relationship, and determine an association relationship between a second uplink DMRS port and a second uplink PTRS port in the 8 uplink DMRS ports based on the code point of the first information field in the DCI and a second correspondence relationship.

[0348] The first information field includes 3 bits; the first correspondence relationship is a mapping relationship between a code point corresponding to the first uplink PTRS port and an uplink DMRS port; and the second correspondence relationship is a mapping relationship between a code point corresponding to the second uplink PTRS port and an uplink DMRS port.

[0349] In some embodiments, the first processing module 1110 is configured to, in response to the number of the uplink PTRS ports being 2, determine an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports and an association relationship between a second uplink DMRS port and a second uplink PTRS port based on a first information field in the DCI; and the first information field includes 6 bits.

[0350] In some embodiments, the 6 bits include 3 most significant bits (MSB) and 3 least significant bits (LSB).

[0351] The 3 most significant bits are used to indicate the first uplink DMRS port, and the 3 least significant bits are used to indicate the second uplink DMRS port.

[0352] Alternatively, the 3 most significant bits are used to indicate the second uplink DMRS port, and the 3 least significant bits are used to indicate the first uplink DMRS port.

[0353] Figure 16 A block diagram of a device for determining a relationship between a PTRS port and a DMRS port is shown, which can be realized by software, hardware or a combination of both as part of or all of a network device, and the device includes:

[0354] The second sending module 1120 is configured to send, to the terminal, downlink control information used to indicate an association relationship between an uplink PTRS port and an uplink DMRS port in a case where a target layer mapping scheme corresponding to n code words is adopted by the terminal.

[0355] The maximum number of the 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.

[0356] In some embodiments, the 2 code words include a first code word and a second code word; the first code word corresponds to a first number of transmission layers after layer mapping; and the second code word corresponds to a second number of transmission layers after layer mapping.

[0357] In the type 1 layer mapping scheme, a layer number difference between the first number of transmission layers and the second number of transmission layers is 0 or 1.

[0358] In the type 2 layer mapping scheme, the layer number difference between the first number of transmission layers and the second number of transmission layers is any value from 0 to 6.

[0359] In some embodiments, in the type 1 layer mapping scheme, a sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8.

[0360] In the type 2 layer mapping scheme, the sum of the first number of transmission layers and the second number of transmission layers is greater than 4 and less than or equal to 8; or the sum of the first number of transmission layers and the second number of transmission layers is greater than 3 and less than or equal to 8; or the sum of the first number of transmission layers and the second number of transmission layers is greater than 1 and less than or equal to 8.

[0361] In some embodiments, in a case where 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.

[0362] In a case where the number of uplink PTRS ports is 1, a first information field in the DCI includes at most 3 bits, and the first information field is used to indicate an association relationship between one uplink DMRS port in a DMRS port group corresponding to one CW and the uplink PTRS port.

[0363] In some embodiments, the first information field is used to indicate one uplink DMRS port in a DMRS port group corresponding to a CW with a higher MCS.

[0364] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group with the largest number of allocated ports when the MCSs of the two CWs are the same.

[0365] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group with the smallest number of allocated ports when the MCSs of the two CWs are the same.

[0366] Alternatively, the first information field is used to indicate one uplink DMRS port in a DMRS port group corresponding to the first CW among the two CWs.

[0367] Alternatively, the first information field is used to indicate one uplink DMRS port in a first DMRS port group corresponding to the first CW.

[0368] Alternatively, the first information field is used to indicate one uplink DMRS port in a second DMRS port group corresponding to the second CW.

[0369] In some embodiments, the first information field includes 2 bits under the type 1 layer mapping scheme.

[0370] The first information field includes at most 3 bits under the type 2 layer mapping scheme.

[0371] 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 one by one.

[0372] The number of uplink PTRS ports is 2, and the first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port in a DMRS port group corresponding to one of the CWs and a first uplink PTRS port. The first information field includes at most 3 bits.

[0373] In some embodiments, the first information field is used to indicate the first uplink DMRS port in a DMRS port group corresponding to the CW with a higher MCS.

[0374] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group with the largest number of allocated ports when the MCSs of the two CWs are the same.

[0375] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group with the smallest number of allocated ports when the MCSs of the two CWs are the same.

[0376] Alternatively, the first information field is used to indicate the first uplink DMRS port in a DMRS port group corresponding to a first CW of the two CWs when MCSs of the two CWs are the same.

[0377] Alternatively, the first information field is used to indicate the first uplink DMRS port in a first DMRS port group corresponding to the first CW.

[0378] Alternatively, the first information field is used to indicate the first uplink DMRS port in a second DMRS port group corresponding to the second CW.

[0379] In some embodiments, under the type 1 layer mapping scheme, the first information field includes 2 bits.

[0380] Under the type 2 layer mapping scheme, the first information field includes at most 3 bits.

[0381] In some embodiments, under the type 1 layer mapping scheme, the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 4.

[0382] Under the type 2 layer mapping scheme, the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 4; or, the number of transmission layers corresponding to the one CW after layer mapping is greater than 0 and less than or equal to 3; or, the number of transmission layers corresponding to the one CW after layer mapping is 1.

[0383] In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 1, the first information field in the DCI includes 3 bits, and the 3 bits are used to indicate an association relationship between one of the 8 uplink DMRS ports and the uplink PTRS port.

[0384] In some embodiments, when the number of CWs is 1, the number of uplink PTRS ports is 2, the first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port of the 8 uplink DMRS ports and a first uplink PTRS port, and the first information field includes 3 bits; and the second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port of the 8 uplink DMRS ports and a second uplink PTRS port.

[0385] In some embodiments, in a case that the number of the CWs is 1, the number of the uplink PTRS ports is 2, a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port in the 8 uplink DMRS ports and a first uplink PTRS port, the first information field includes 3 bits; a code point of a second information field in the DCI is used to indicate an association relationship between a second uplink DMRS port in the 8 uplink DMRS ports and a second uplink PTRS port.

[0386] In some embodiments, the second information field refers to bits of an MCS field or reserved bits of other information fields on the DCI except the first information field.

[0387] In some embodiments, in a case that the number of the CWs is 1, the number of the uplink PTRS ports is 2, a code point of a first information field in the DCI is used to indicate an association relationship between a first uplink DMRS port in the 8 uplink DMRS ports and a first uplink PTRS port in a first correspondence relationship; a code point of the first information field in the DCI is used to indicate an association relationship between a second uplink DMRS port in the 8 uplink DMRS ports and a second uplink PTRS port in a second correspondence relationship.

[0388] The first information field includes 3 bits; the first correspondence relationship is a mapping relationship between a code point corresponding to the first uplink PTRS port and an uplink DMRS port; and the second correspondence relationship is a mapping relationship between a code point corresponding to the second uplink PTRS port and an uplink DMRS port.

[0389] In some embodiments, the number of the uplink PTRS ports is 2, a first information field in the DCI includes 6 bits, and the 6 bits are used to indicate an association relationship between a first uplink DMRS port and a first uplink PTRS port in the 8 uplink DMRS ports and an association relationship between a second uplink DMRS port and a second uplink PTRS port.

[0390] In some embodiments, the 6 bits include 3 most significant bits and 3 least significant bits.

[0391] The 3 most significant bits are used to indicate the first uplink DMRS port, and the 3 least significant bits are used to indicate the second uplink DMRS port.

[0392] Alternatively, the 3 most significant bits are used to indicate the second uplink DMRS port, and the 3 least significant bits are used to indicate the first uplink DMRS port.

[0393] Figure 17A structure diagram of a UE provided by one example embodiment of the present disclosure is shown, which includes a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204 and a bus 1205.

[0394] The processor 1201 includes one or more processing cores, and the processor 1201 performs various functional applications and information processing by running software programs and modules.

[0395] The receiver 1202 and the transmitter 1203 can be implemented as a communication component, which can be a communication chip.

[0396] The memory 1204 is connected to the processor 1201 through the bus 1205.

[0397] The memory 1204 can be used to store at least one instruction, and the processor 1201 is configured to execute the at least one instruction to implement each step in the above method embodiments.

[0398] In addition, the memory 1204 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, including but not limited to: a magnetic or optical disk, an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read Only Memory), a static random access memory (SRAM, Static Random-Access Memory), a read-only memory (ROM, Read Only Memory), a magnetic memory, a flash memory, a programmable read-only memory (PROM, Programmable Read Only Memory).

[0399] In example embodiments, a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, is also provided, and the above-mentioned instructions can be executed by a processor of a UE to complete the above-mentioned method of determining the relationship between the PTRS port and the DMRS port. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM, Random-Access Memory), a compact disc read-only memory (CD-ROM, Compact Disc Read Only Memory), a magnetic tape, a floppy disk and an optical data storage device, etc.

[0400] 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 method for determining the relationship between the PTRS port and the DMRS port described above.

[0401] Figure 18 Fig. 13 is a block diagram of a network device 1300 according to an example embodiment. The network device 1300 can be a base station.

[0402] The network device 1300 can include a processor 1301, a receiver 1302, a transmitter 1303, and a memory 1304. The receiver 1302, the transmitter 1303, and the memory 1304 are connected to the processor 1301 through a bus, respectively.

[0403] 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 embodiments of the present disclosure by running software programs and modules. The memory 1304 can be used to store software programs and modules. Specifically, the memory 1304 can store an operating system 13041 and at least one application module 13042 required by at least one function. The receiver 1302 is configured to receive communication data sent by other devices, and the transmitter 1303 is configured to send communication data to other devices.

[0404] An example embodiment of the present disclosure further provides a computer readable storage medium, which stores at least one instruction, at least one 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 are loaded and executed by the processor to implement the method for determining the relationship between the PTRS port and the DMRS port provided by each method embodiment described above.

[0405] An example embodiment of the present disclosure further provides a computer program product, which includes computer instructions stored in a computer readable storage medium. The processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions to enable the computer device to perform the method for determining the relationship between the PTRS port and the DMRS port provided by each method embodiment described above.

[0406] It should be understood that "multiple" referred to herein refers to two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. The character " / " generally represents that the associated objects before and after it are in an "or" relationship.

[0407] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the disclosure be construed as including any paterns of this disclosure that can be derived from the description and illustrations presented herein without departing from the scope and spirit of the disclosure. The specification and examples are exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

[0408] It should be understood that the present disclosure is not limited to the precise structures as herein described and illustrated in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is indicated by the appended claims, rather than the description and examples.

Claims

1. A method for determining the relationship between the phase tracking reference signal PTRS port and the demodulation reference signal DMRS, characterized in that, The method is executed by a terminal, and the method includes: When using a target layer mapping scheme corresponding to two codewords (CW), the eight uplink DMRS ports are divided into two DMRS port groups. The two CWs correspond one-to-one with the two DMRS port groups. In response to the fact that the number of uplink PTRS ports is 1, the association between an uplink DMRS port in a DMRS port group corresponding to a CW and the uplink PTRS port is determined based on the first information field in the downlink control information (DCI). Wherein, the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme; The two codewords include a first codeword and a second codeword. The first codeword corresponds to a first transmission layer after layer mapping, and the second codeword corresponds to a second transmission layer after layer mapping. In the layer mapping scheme of type 1, the difference in the number of layers between the first transmission layer and the second transmission layer is 0 or 1; Under the layer mapping scheme of type 2, the difference in the number of layers between the first transmission layer and the second transmission layer is any value from 0 to 6; When the number of uplink PTPS ports is 1, the first information field includes at most 3 bits; The first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding scheme MCS; Alternatively, the first information field is 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 first information field is 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 first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW when the MCS of the two CWs are the same; Alternatively, the first information field may be used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW; Alternatively, the first information field may be used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

2. The method according to claim 1, characterized in that, Under the layer mapping scheme of type 1, 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 layer mapping scheme of type 2, 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.

3. The method according to claim 2, characterized in that, In the layer mapping scheme of type 1, the first information field includes 2 bits; In the layer mapping scheme of type 2, the first information field includes at most 3 bits.

4. A method for determining the relationship between a PTRS port and a DMRS port, characterized in that, The method is performed by a network device, and the method includes: Send downlink control information (DCI) to the terminal. The first information field in the DCI is used to indicate the association between an uplink DMRS port and the uplink PTRS port in a DMRS port group corresponding to a CW when the terminal adopts a target layer mapping scheme corresponding to two codewords (CW). Among them, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs correspond one-to-one with the 2 DMRS port groups; the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme. The two codewords include a first codeword and a second codeword. The first codeword corresponds to a first transmission layer after layer mapping, and the second codeword corresponds to a second transmission layer after layer mapping. In the layer mapping scheme of type 1, the difference in the number of layers between the first transmission layer and the second transmission layer is 0 or 1; Under the layer mapping scheme of type 2, the difference in the number of layers between the first transmission layer and the second transmission layer is any value from 0 to 6; When the number of uplink PTPS ports is 1, the first information field includes at most 3 bits; The first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding scheme (MCS); or, the first information field is 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 first information field is 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 first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW when the MCS of the two CWs are the same; or, the first information field is used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW; or, the first information field is used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

5. The method according to claim 4, characterized in that, Under the layer mapping scheme of type 1, 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 layer mapping scheme of type 2, 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.

6. The method according to claim 5, characterized in that, In the layer mapping scheme of type 1, the first information field includes 2 bits; In the layer mapping scheme of type 2, the first information field includes at most 3 bits.

7. An apparatus 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, when using a target layer mapping scheme corresponding to two codewords (CWs), divide eight uplink DMRS ports into two DMRS port groups, with each of the two CWs corresponding to one of the two DMRS port groups. In response to the number of uplink PTRS ports being 1, the module determines the association between an uplink DMRS port in a DMRS port group corresponding to a CW and the uplink PTRS port based on the first information field in the downlink control information (DCI). Wherein, the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme; The two codewords include a first codeword and a second codeword. The first codeword corresponds to a first transmission layer after layer mapping, and the second codeword corresponds to a second transmission layer after layer mapping. In the layer mapping scheme of type 1, the difference in the number of layers between the first transmission layer and the second transmission layer is 0 or 1; Under the layer mapping scheme of type 2, the difference in the number of layers between the first transmission layer and the second transmission layer is any value from 0 to 6; When the number of uplink PTPS ports is 1, the first information field includes at most 3 bits; The first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding scheme (MCS); or, the first information field is 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 first information field is 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 first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW when the MCS of the two CWs are the same; or, the first information field is used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW; or, the first information field is used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

8. An apparatus 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 (DCI) to the terminal. The first information field in the DCI is used to indicate the association between an uplink DMRS port and the uplink PTRS port in a DMRS port group corresponding to a CW when the terminal adopts a target layer mapping scheme corresponding to two codewords (CW). Among them, the 8 uplink DMRS ports are divided into 2 DMRS port groups, and the 2 CWs correspond one-to-one with the 2 DMRS port groups; the target layer mapping scheme is a type 1 layer mapping scheme or a type 2 layer mapping scheme. The two codewords include a first codeword and a second codeword. The first codeword corresponds to a first transmission layer after layer mapping, and the second codeword corresponds to a second transmission layer after layer mapping. In the layer mapping scheme of type 1, the difference in the number of layers between the first transmission layer and the second transmission layer is 0 or 1; Under the layer mapping scheme of type 2, the difference in the number of layers between the first transmission layer and the second transmission layer is any value from 0 to 6; When the number of uplink PTPS ports is 1, the first information field includes at most 3 bits; The first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the CW with a higher modulation and coding scheme (MCS); or, the first information field is 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 first information field is 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 first information field is used to indicate an uplink DMRS port in the DMRS port group corresponding to the first CW when the MCS of the two CWs are the same; or, the first information field is used to indicate an uplink DMRS port in the first DMRS port group corresponding to the first CW; or, the first information field is used to indicate an uplink DMRS port in the second DMRS port group corresponding to the second CW.

9. A terminal, characterized in that, The terminal includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the method for determining the relationship between PTRS ports and DMRS ports as described in any one of claims 1 to 3.

10. A network device, characterized in that, The network device includes: processor; A transceiver connected to the processor; The processor is configured to load and execute executable instructions to implement the method for determining the relationship between PTRS ports and DMRS ports as described in any one of claims 4 to 6.

11. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one program, which is loaded and executed by a processor to implement the method for determining the relationship between a PTRS port and a DMRS port as described in any one of claims 1 to 3, or the method for determining the relationship between a PTRS port and a DMRS port as described in any one of claims 4 to 6.

12. A computer program product, characterized in that, The computer program product includes computer instructions stored in a computer-readable storage medium; a processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions to cause the computer device to perform the method for determining the relationship between a PTRS port and a DMRS port as described in any one of claims 1 to 3, or the method for determining the relationship between a PTRS port and a DMRS port as described in any one of claims 4 to 6.

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