Demodulation reference signal information determination method, indication method and related devices

Abstract

The application discloses a demodulation reference signal information determination method, a demodulation reference signal information indication method and related equipment, and belongs to the technical field of communication. The demodulation reference signal information determination method comprises the following steps: a terminal receives first demodulation reference signal (DMRS) indication information sent by a network side device; the terminal determines DMRS information of a target DMRS based on the first DMRS indication information; wherein ports belonging to a same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal cover code (FD-OCC) sequence with a length of 4; the DMRS information comprises at least one of the following: the number of target CDM groups, the target CDM group being a CDM group corresponding to the target DMRS and not occupied by data; port information of the target DMRS; and the number of pre-symbols.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a method for determining demodulation reference signal information, an indication method, and related equipment. Background Technology

[0002] In existing New Radio (NR) systems, the demodulation reference signal (DMRS) for the data channel supports a maximum of 12 ports, which limits the number of data streams that can be transmitted simultaneously and the number of terminals that can be multiplexed in a coordinated manner, thus affecting the transmission capacity of the NR system. Summary of the Invention

[0003] This application provides a method for determining demodulation reference signal information, an indication method, and related equipment, which can improve the transmission capacity of a communication system.

[0004] Firstly, a method for determining demodulation reference signal information is provided, including:

[0005] The terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device;

[0006] The terminal determines the DMRS information of the target DMRS based on the first DMRS indication information;

[0007] Wherein, the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0008] Secondly, a method for indicating demodulated reference signal information is provided, including:

[0009] The network-side device sends the first demodulation reference signal (DMRS) indication information to the terminal;

[0010] Wherein, the first DMRS indication information is used to determine the DMRS information of the target DMRS, wherein the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are the CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0011] Thirdly, a demodulation reference signal information determination device is provided, comprising:

[0012] The first receiving module is used to receive the first demodulation reference signal (DMRS) indication information sent by the network-side device.

[0013] The determination module is used to determine the DMRS information of the target DMRS based on the first DMRS indication information;

[0014] Wherein, the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0015] Fourthly, a demodulation reference signal information indicating device is provided, comprising:

[0016] The second transmitting module is used to send the first demodulation reference signal (DMRS) indication information to the terminal.

[0017] Wherein, the first DMRS indication information is used to determine the DMRS information of the target DMRS, wherein the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are the CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0018] Fifthly, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0019] In a sixth aspect, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to receive first demodulation reference signal (DMRS) indication information sent by a network-side device; the processor is used to determine DMRS information of a target DMRS based on the first DMRS indication information; wherein ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are CDM groups that are not occupied by data in the CDM groups corresponding to the target DMRS; port information of the target DMRS; and the number of preamble symbols.

[0020] In a seventh aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0021] Eighthly, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first demodulation reference signal (DMRS) indication information to a terminal; wherein the first DMRS indication information is used to determine the DMRS information of a target DMRS, wherein ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are CDM groups that are not occupied by data in the CDM groups corresponding to the target DMRS; port information of the target DMRS; and the number of preamble symbols.

[0022] A ninth aspect provides a communication system comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the demodulation reference signal information determination method as described in the first aspect, and the network-side device is configured to perform the steps of the demodulation reference signal information indication method as described in the second aspect.

[0023] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0024] Eleventhly, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0025] In a twelfth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the method as described in the first aspect, or to implement the steps of the method as described in the second aspect.

[0026] In this embodiment, the DMRS information of the target DMRS is determined through the first DMRS indication information, and ports belonging to the same Code Division Multiplexing (CDM) group in the target DMRS are mapped based on an FD-OCC sequence of length 4. This allows the DMRS of the data channel to support more ports. Therefore, this embodiment can improve the transmission capacity of the communication system. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a network structure applicable to the embodiments of this application;

[0028] Figure 2 This is a flowchart illustrating the method for determining demodulation reference signal information provided in an embodiment of this application;

[0029] Figure 3 This is a flowchart illustrating the demodulation reference signal information indication method provided in the embodiments of this application;

[0030] Figure 4 This is a structural diagram of the demodulation reference signal information determination device provided in the embodiments of this application;

[0031] Figure 5 This is a structural diagram of the demodulation reference signal information indication device provided in the embodiments of this application;

[0032] Figure 6 This is a structural diagram of the communication device provided in the embodiments of this application;

[0033] Figure 7 This is a structural diagram of the terminal provided in the embodiments of this application;

[0034] Figure 8 This is a structural diagram of the network-side device provided in the embodiments of this application. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0036] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0037] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and NR terminology is used in most of the following description; however, these technologies can also be applied to applications beyond NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0038] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. Terminal 11 can be a mobile phone, tablet computer, laptop computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, vehicle-mounted device (VUE), pedestrian terminal (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the specific type of terminal 11 is not limited in this embodiment. Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment 12 may also be referred to as radio access network equipment, radio access network (RAN), radio access network function, or radio access network unit. Access network equipment 12 may include base stations, WLAN access points, or WiFi nodes, etc. Base stations may be referred to as Node B, evolved Node B (eNB), access point, base transceiver station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B node, home evolved B node, Transmitting Receiving Point (TRP), or any other suitable term in the field, as long as the same technical effect is achieved. The base station is not limited to specific technical terms. It should be noted that in this application embodiment, only a base station in an NR system is used as an example for description, and the specific type of base station is not limited.Core network equipment may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), and Application Function. Function (AF), etc. It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment.

[0039] For ease of understanding, the following describes some aspects of the embodiments of this application:

[0040] In current NR systems, DMRS is used for channel estimation. For data channel DMRS, it can be categorized into two types: DMRS Configuration Type 1 and DMRS Configuration Type 2. Both types support single-symbol and double-symbol structures. DMRS Configuration Type 1 supports a maximum of 4 ports for a single-symbol structure and a maximum of 8 ports for a double-symbol structure; DMRS Configuration Type 2 supports a maximum of 6 ports for a single-symbol structure and a maximum of 12 ports for a double-symbol structure. Furthermore, DMRS Configuration Type 1 supports 2 Code Division Multiplexing (CDM) groups, while DMRS Configuration Type 2 supports 3 CDM groups.

[0041] In NR systems, DMRS configuration type 1 for data channels supports a maximum of 8 ports, and DMRS configuration type 2 supports a maximum of 12 ports. This limits the number of data streams that can be transmitted simultaneously and the number of terminals that can be multiplexed in a coordinated manner. To address this, the demodulation reference signal information determination method proposed in this application is presented.

[0042] The demodulation reference signal information determination method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0043] Reference Figure 1 This application provides a method for determining demodulation reference signal information, including:

[0044] Step 201: The terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device;

[0045] Step 202: The terminal determines the DMRS information of the target DMRS based on the first DMRS indication information;

[0046] The ports belonging to the same Code Division Multiplexing (CDM) group in the target DMRS are mapped based on a Frequency Division-Orthogonal Cover Code (FD-OCC) sequence of length 4. The DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; the port information of the target DMRS; and the number of front-load symbols.

[0047] In this embodiment, since ports belonging to the same Code Division Multiplexing (CDM) group in the target DMRS are mapped based on an FD-OCC sequence of length 4, when the target DMRS is of the first configuration type, it supports a maximum of 8 ports when the number of preamble symbols is 1, and a maximum of 16 ports when the number of preamble symbols is 2. When the target DMRS is of the second configuration type, it supports a maximum of 12 ports when the number of preamble symbols is 1, and a maximum of 24 ports (which can be referred to as DMRS ports) when the number of preamble symbols is 2. This improves the transmission capacity of the communication system.

[0048] It should be understood that the number of the aforementioned prefix symbols can be 1 or 2. When the number of prefix symbols is 1, it corresponds to the single-symbol structure of DMRS; when the number of prefix symbols is 2, it corresponds to the double-symbol structure of DMRS.

[0049] In this embodiment, the DMRS information of the target DMRS is determined through the first DMRS indication information, and ports belonging to the same Code Division Multiplexing (CDM) group in the target DMRS are mapped based on an FD-OCC sequence of length 4. This allows the DMRS of the data channel to support more ports. Therefore, this embodiment can improve the transmission capacity of the communication system.

[0050] It should be noted that, in this embodiment, the first DMRS indication information can be indicated using X bits. The network-side device and the terminal device can pre-define a DMRS indication table. Under each DMRS configuration type, different indication tables can be used depending on the codeword enabling status and the maximum symbol length of the DMRS. When indicating DMRS information in different indication tables, the value of X can be different. For example, when the indication table includes 4 rows of DMRS information, the value of X can be 2; when the indication table includes 8 rows of DMRS information, the value of X can be 3; when the indication table includes 16 rows of DMRS information, the value of X can be 4; when the indication table includes 32 rows of DMRS information, the value of X can be 5; when the indication table includes 64 rows of DMRS information, the value of X can be 6; and when the indication table includes 128 rows of DMRS information, the value of X can be 7. The aforementioned first DMRS indication information can be Downlink Control Information (DCI) or information carried through DCI.

[0051] Optionally, the terminal can determine which indication table to use for DMRS information based on the number of bits in the first DMRS indication information, or determine which indication table to use for DMRS information based on the Radio Resource Control (RRC) signaling configured by the network-side equipment.

[0052] It should be understood that, in the embodiments of this application, the index values ​​of each port from the first port to the twenty-fourth port can be set according to actual needs. For example, the first port can be the first port, or it can be any intermediate port.

[0053] Optionally, in some embodiments, the first port, second port, third port, fourth port, fifth port, sixth port, seventh port, and eighth port can correspond to port 0, port 1, port 2, port 3, port 4, port 5, port 6, and port 7, respectively; or they can correspond to port 0, port 1, port 8, port 9, port 2, port 3, port 10, and port 11, respectively. "Corresponding respectively" means that they correspond sequentially, one by one. For example, the first correspondence method described above can be understood as: the first port corresponds to port 0, the second port to port 1, the third port to port 2, the fourth port to port 3, the fifth port to port 4, the sixth port to port 5, the seventh port to port 6, and the eighth port to port 7.

[0054] Optionally, in some embodiments, the first port, second port, third port, fourth port, fifth port, sixth port, seventh port, eighth port, ninth port, tenth port, eleventh port, twelfth port, thirteenth port, fourteenth port, fifteenth port, and sixteenth port can correspond to port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8, port 9, port 10, port 11, port 12, port 13, port 14, and port 15, respectively; or correspond to port 0, port 1, port 4, port 5, port 2, port 3, port 6, port 7, port 8, port 9, port 12, port 13, port 10, port 11, port 14, and port 15, respectively.

[0055] Optionally, in some embodiments, the first port, second port, third port, fourth port, fifth port, sixth port, seventh port, eighth port, ninth port, tenth port, eleventh port and twelfth port correspond to port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8, port 9, port 10, port 11 and port 12 respectively; or correspond to port 0, port 1, port 12, port 13, port 2, port 3, port 8, port 9, port 4, port 5, port 16 and port 17 respectively.

[0056] Optionally, in some embodiments, the first port, second port, third port, fourth port, fifth port, sixth port, seventh port, eighth port, ninth port, tenth port, eleventh port, twelfth port, thirteenth port, fourteenth port, fifteenth port, sixteenth port, seventeenth port, eighteenth port, nineteenth port, twentieth port, twenty-first port, twenty-second port, twenty-third port, and twenty-fourth port correspond to port 0, port 1, port 2, port 3, port 4, port 5, port 6, port 7, and port 8, respectively. Port 9, Port 10, Port 11, Port 12, Port 13, Port 14, Port 15, Port 16, Port 17, Port 18, Port 19, Port 20, Port 21, Port 22, Port 23; or corresponding to Port 0, Port 1, Port 6, Port 7, Port 2, Port 3, Port 8, Port 9, Port 4, Port 5, Port 10, Port 11, Port 12, Port 13, Port 18, Port 19, Port 14, Port 15, Port 20, Port 21, Port 16, Port 17, Port 22, Port 23 respectively.

[0057] The ports of the DMRS are indexed starting from 0. In the following embodiments, the nth port is described as port n-1, where n is a positive integer less than or equal to 24.

[0058] To better understand, the following details the specific content of the DMRS information for determining the target DMRS based on the first DMRS indication information, taking into account the different maximum number of ports supported by the target DMRS and the different configuration types of DMRS.

[0059] For example, in some embodiments, it is assumed that the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; and the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group.

[0060] In this embodiment of the application, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes either first DMRS information or second DMRS information. The aforementioned first configuration type can be understood as a DMRS configuration type associated with DMRS configuration type 1. For example, the first configuration type can be DMRS configuration type 1 or enhanced DMRS configuration type 1.

[0061] The first DMRS information includes any one of the following:

[0062] The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port;

[0063] The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port;

[0064] The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port;

[0065] The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0066] The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0067] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0068] The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port;

[0069] The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port.

[0070] The first DMRS information includes: the number of target CDM groups is 2; the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0071] Optionally, when single codeword is enabled, if the target DMRS type is the first configuration type and the maximum symbol length (maxlength) of the target DMRS is 1, the DMRS information of the target DMRS can be determined based on the first DMRS indication information. The specific DMRS information may include the aforementioned first DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 1).

[0072] Table 1:

[0073]

[0074] Regarding Table 1 above, the first DMRS indication information can be indicated using 5 bits. For example, the DMRS information of the target DMRS can be indicated by the corresponding number value (such as the value value) using 5 bits.

[0075] Optionally, when dual codewords are enabled, and the target DMRS type is the first configuration type, the maximum symbol length of the target DMRS is 1. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned second DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 2).

[0076] Table 2:

[0077] 0 2 0,1,2,4,5 1 2 0,1,2,4,5,6 2 2 0,1,2,3,4,5,6 3 2 0,1,2,3,4,5,6,7

[0078] Regarding Table 2 above, the first DMRS indication information can be indicated using 2 bits.

[0079] For example, in some embodiments, it is assumed that the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port, wherein the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; and the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group.

[0080] In this embodiment of the application, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes third DMRS information or fourth DMRS information.

[0081] The third DMRS information includes any one of the following:

[0082] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port;

[0083] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port;

[0084] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0085] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0086] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0087] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port.

[0088] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port;

[0089] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

[0090] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the first port and the ninth port, or the fifth port and the thirteenth port;

[0091] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the ninth port, or the fifth port, the sixth port and the thirteenth port;

[0092] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the first port, the second port, the ninth port and the tenth port, or the fifth port, the sixth port, the thirteenth port and the fourteenth port.

[0093] The fourth DMRS information includes any one of the following:

[0094] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0095] The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port and the ninth port, or includes the first port, the second port, the third port, the fourth port, the ninth port and the tenth port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port and the eleventh port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port, the eleventh port and the twelfth port;

[0096] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the thirteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, and the fourteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

[0097] Optionally, when single codeword is enabled, and the target DMRS type is the first configuration type, the maximum symbol length of the target DMRS is 2. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned third DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 3).

[0098] Table 3:

[0099]

[0100]

[0101] According to Table 3 above, the first DMRS indication information can be indicated using 6 bits.

[0102] Optionally, when dual codewords are enabled, and the target DMRS type is the first configuration type, the maximum symbol length of the target DMRS is 2. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned fourth DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 4).

[0103] Table 4:

[0104] 0 2 0,1,2,4,5 1 1 2 0,1,2,4,5,6 1 2 2 0,1,2,3,4,5,6 1 3 2 0,1,2,3,4,5,6,7 1 4 1 0,1,2,3,8 2 5 1 0,1,2,3,8,9 2 6 1 0,1,2,3,8,9,10 2 7 1 0,1,2,3,8,9,10,11 2 8 2 0,1,2,3,8 2 9 2 4,5,6,7,12 2 10 2 0,1,2,3,8,9 2 11 2 4,5,6,7,12,13 2 12 2 0,1,2,3,8,9,10 2 13 2 4,5,6,7,12,13,14 2 14 2 0,1,2,3,8,9,10,11 2 15 2 4,5,6,7,12,13,14,15 2

[0105] Regarding Table 4 above, the first DMRS indication information can be indicated using 4 bits.

[0106] For example, in some embodiments, it is assumed that the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, and a twelfth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group; and the ninth port, the tenth port, the eleventh port, and the twelfth port belong to a third CDM group.

[0107] In this embodiment of the application, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes fifth DMRS information or sixth DMRS information. The aforementioned second configuration type can be understood as a DMRS configuration type associated with DMRS configuration type 2. For example, the second configuration type can be DMRS configuration type 2 or enhanced DMRS configuration type 2.

[0108] The fifth DMRS information includes any one of the following:

[0109] The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port;

[0110] The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port;

[0111] The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port;

[0112] The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0113] The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0114] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0115] The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port;

[0116] The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port.

[0117] The number of target CDM groups is 3, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, and the twelfth port;

[0118] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the ninth port and the tenth port, or includes the eleventh port and the twelfth port;

[0119] The number of target CDM groups is 3, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0120] The number of target CDM groups is 3, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port.

[0121] The sixth DMRS information includes: the number of target CDM groups is 2 or 3; the port information includes the first port, the second port, the third port, the fifth port and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port and the eighth port.

[0122] Optionally, when single codeword is enabled, and the target DMRS type is the second configuration type, the maximum symbol length of the target DMRS is 1. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned first DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 5).

[0123] Table 5:

[0124]

[0125]

[0126] Optionally, when dual codewords are enabled, and the target DMRS type is the second configuration type, the maximum symbol length of the target DMRS is 1. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned first DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 6 or Table 7).

[0127] Table 6:

[0128] 0 2 0,1,2,4,5 1 2 0,1,2,4,5,6 2 2 0,1,2,3,4,5,6 3 2 0,1,2,3,4,5,6,7 4 3 0,1,2,4,5 5 3 0,1,2,4,5,6 6 3 0,1,2,3,4,5,6 7 3 0,1,2,3,4,5,6,7

[0129] Regarding Table 6 above, the first DMRS indication information can be indicated using 3 bits.

[0130] Table 7:

[0131] 0 2 0,1,2,4,5 1 2 0,1,2,4,5,6 2 2 0,1,2,3,4,5,6 3 2 0,1,2,3,4,5,6,7

[0132] Regarding Table 7 above, the first DMRS indication information can be indicated using 2 bits.

[0133] For example, in some embodiments, it is assumed that the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, a sixteenth port, a seventeenth port, an eighteenth port, a nineteenth port, a twentieth port, a twenty-first port, a twenty-second port, a twenty-third port, and a twenty-fourth port, wherein the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group; and the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port belong to a third CDM group.

[0134] In this embodiment of the application, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes the seventh DMRS information or the eighth DMRS information.

[0135] The seventh DMRS information includes any one of the following:

[0136] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes any one of the first port, second port, third port, and fourth port;

[0137] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port;

[0138] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port;

[0139] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0140] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0141] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0142] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port.

[0143] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port, or includes the fifth port, the sixth port, the seventh port, and the eighth port; or includes the first port, the fifth port, the sixth port, and the seventh port; or includes the first port, the second port, the third port, and the fifth port; or includes the first port, the second port, the fifth port, and the sixth port; or includes the first port, the third port, the fifth port, and the seventh port.

[0144] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, and the twelfth port;

[0145] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port;

[0146] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0147] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port;

[0148] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, the sixteenth port, the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port.

[0149] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the seventeenth port and the eighteenth port, or the nineteenth port and the twentieth port, or the twentieth port and the twentieth port, or the twentieth port and the twentieth port, or the twentieth port and the twentieth port;

[0150] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0151] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port;

[0152] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port;

[0153] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port;

[0154] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port, the second port, and the third port, or includes the thirteenth port, the fourteenth port, and the fifteenth port;

[0155] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or includes the thirteenth port, the fourteenth port, the fifteenth port and the sixteenth port;

[0156] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the seventeenth port and the eighteenth port, or the nineteenth port and the twentieth port;

[0157] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, and the third port, or includes the fifth port, the sixth port, and the seventh port;

[0158] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port.

[0159] The eighth DMRS information includes any one of the following:

[0160] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0161] The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port, and the thirteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, and the fourteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port;

[0162] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the seventeenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, and the eighteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, the eighteenth port, and the nineteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, the eighteenth port, the nineteenth port, and the twentieth port.

[0163] Optionally, when single codeword is enabled, and the target DMRS type is the second configuration type, the maximum symbol length of the target DMRS is 2. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned first DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 8).

[0164] Table 8:

[0165]

[0166]

[0167]

[0168] Regarding Table 8 above, the first DMRS indication information can be indicated using 7 bits.

[0169] Optionally, when dual codewords are enabled, and the target DMRS type is the second configuration type, the maximum symbol length of the target DMRS is 2. Based on the first DMRS indication information, the DMRS information of the target DMRS can be determined. The specific DMRS information may include the aforementioned first DMRS information. In this embodiment, the aforementioned DMRS information can be determined based on the DMRS indication table (i.e., Table 9).

[0170] Table 9:

[0171] 0 2 0,1,2,4,5 1 1 2 0,1,2,4,5,6 1 2 2 0,1,2,3,4,5,6 1 3 2 0,1,2,3,4,5,6,7 1 4 1 0,1,2,3,12 2 5 1 0,1,2,3,12,13 2 6 1 0,1,2,3,12,13,14 2 7 1 0,1,2,3,12,13,14,15 2 8 2 0,1,2,3,12 2 9 2 4,5,6,7,16 2 10 2 0,1,2,3,12,13 2 11 2 4,5,6,7,16,17 2 12 2 0,1,2,3,12,13,14 2 13 2 4,5,6,7,16,17,18 2 14 2 0,1,2,3,12,13,14,15 2 15 2 4,5,6,7,16,17,18,19 2

[0172] Regarding Table 9 above, the first DMRS indication information can be indicated using 4 bits.

[0173] Optionally, in some embodiments, the port information includes any of the following:

[0174] A CDM group contains N ports, where N is a positive integer less than or equal to 8;

[0175] M ports in one CDM group and M ports in another CDM group, where M is a positive integer less than or equal to 4;

[0176] One port in one CDM group and two ports in another CDM group;

[0177] One port in one CDM group and three ports in another CDM group;

[0178] Two ports in one CDM group and three ports in another CDM group;

[0179] Three ports in one CDM group and four ports in another CDM group.

[0180] In this embodiment of the application, when a single codeword is enabled, the DMRS information indicated by the first DMRS indication information includes the following cases:

[0181] Case 1: 1 port, for example, indicating 1 port in a CDM group;

[0182] Case 2: Two ports, for example, indicating two ports in one CDM group, or one port in each of two CDM groups;

[0183] Case 3: 3 ports, for example, indicating 3 ports in one CDM group, or indicating 1 port and 2 ports in two CDM groups respectively, or indicating 2 ports and 1 port in two CDM groups respectively;

[0184] Case 4: 4 ports, for example, indicating 4 ports in one CDM group, or 2 ports in each of two CDM groups, or 1 port and 3 ports in two CDM groups, or 3 ports and 1 port in two CDM groups.

[0185] In this embodiment of the application, when the dual codeword is enabled, the DMRS information indicated by the first indication information includes the following cases:

[0186] Case 5: 5 ports, for example, indicating 5 ports in one CDM group, or indicating 3 ports and 2 ports in two CDM groups respectively;

[0187] Case 6: 6 ports, for example, indicating 6 ports in one CDM group, or indicating 3 ports and 3 ports in two CDM groups respectively;

[0188] Case 7: 7 ports, for example, indicating 7 ports in a CDM group, or indicating 4 ports and 3 ports in two CDM groups respectively;

[0189] Case 8: 8 ports, for example, indicating 8 ports in a CDM group, or indicating 4 ports and 4 ports in two CDM groups respectively.

[0190] It should be noted that the specific indication form of the first DMRS indication information for indicating port information includes, but is not limited to, the indication forms listed in this application, and is not further limited here. For example, when the DMRS information indicated by the first DMRS indication information includes 5 ports, other indication situations may also exist, such as indicating 1 port and 4 ports in two CDM groups respectively.

[0191] Optionally, in some embodiments, before the terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device, the method further includes:

[0192] The terminal reports first capability information to the network-side device, the first capability information indicating whether the terminal supports the network-side device in indicating the target DMRS information through the first DMRS indication information.

[0193] In this embodiment, when the terminal reports first capability information to the network side, the network-side device can determine whether the terminal supports the network-side device in indicating the DMRS information of the target DMRS through the first DMRS indication information based on the first capability information. If the terminal supports the network-side device in indicating the DMRS information of the target DMRS through the first DMRS indication information, the network-side device can indicate the DMRS information of the target DMRS through the first DMRS indication information. If the terminal does not support the network-side device in indicating the DMRS information of the target DMRS through the first DMRS indication information, the network-side device can indicate the DMRS information of a conventional DMRS through a conventional indication method, such as indicating the DMRS information through a third DMRS indication information.

[0194] Optionally, in some embodiments, after the terminal reports the first capability information to the network-side device, the method further includes:

[0195] The terminal receives first DMRS configuration information sent by the network-side device. The first DMRS configuration information is used to instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information.

[0196] In this embodiment of the application, the first DMRS configuration information can be RRC configuration signaling. The network-side device can configure or instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information through the first DMRS configuration information. After receiving the first DMRS configuration information, the terminal can determine the DMRS information of the target DMRS based on the first DMRS indication information.

[0197] Optionally, in some embodiments, after the terminal reports the first capability information to the network-side device, the method further includes:

[0198] The terminal receives a second DMRS indication information sent by the network-side device. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0199] In this embodiment, the second DMRS indication information can be understood as DCI, or as information carried by DCI. Network-side devices can switch the indication method of DMRS information using the second DMRS indication information. For example, when the network-side device instructs the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information using the second DMRS indication information, the terminal can determine the DMRS information of the target DMRS using the first DMRS indication information. When the network-side device instructs the terminal to determine the DMRS information based on the third DMRS indication information using the second DMRS indication information, the terminal can determine the DMRS information using the third DMRS indication information. The third DMRS indication information is used to determine the DMRS information of the second DRMS, where ports belonging to the same Code Division Multiplexing (CDM) group in the second DMRS are mapped based on a Frequency Division Orthogonal Covering Code (FD-OCC) sequence of length 2.

[0200] Optionally, in some embodiments, before the terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device, the method further includes:

[0201] The terminal reports second capability information to the network-side device. The second capability information is used to indicate whether the terminal supports receiving second DMRS indication information. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0202] Optionally, the second DMRS indication information is located within the target indication field in the downlink control information.

[0203] In this embodiment of the application, an indication field (e.g., 1 bit) can be added to the DCI to indicate whether the terminal receives the first DMRS indication information or the third DMRS indication information.

[0204] Optionally, in some embodiments, the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information, including:

[0205] When the data channel corresponding to the target DMRS is a Physical Uplink Shared Channel (PUSCH), the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information and rank information.

[0206] In this embodiment, the aforementioned rank information can be referred to as the Rank value. When the data channel is PUSCH, the DMRS information corresponding to the target DMRS can be jointly determined based on the Rank value and the first DMRS indication information. The following explains the process of jointly determining the DMRS information corresponding to the target DMRS based on the Rank value and the first DMRS indication information:

[0207] For example, when the target DMRS type is the first configuration type, the transformation precoder is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 1, the first DMRS indication information can be indicated by 4 bits; when the target DMRS type is the first configuration type, the transformation precoder is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 2, the first DMRS indication information can be indicated by 3 bits; when the target DMRS type is the first configuration type, the transformation precoder is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 3, the first DMRS indication information can be indicated by 2 bits; when the target DMRS type is the first configuration type, the transformation precoder is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 4, the first DMRS indication information can be indicated by 2 bits.

[0208] When the target DMRS type is the first configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 2, and the Rank is 1, the first DMRS indication information can be indicated using 5 bits; when the target DMRS type is the first configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 2, and the Rank is 2, the first DMRS indication information can be indicated using 5 bits; when the target DMRS type is the first configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 2, and the Rank is 3, the first DMRS indication information can be indicated using 3 bits; when the target DMRS type is the first configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 2, and the Rank is 4, the first DMRS indication information can be indicated using 3 bits.

[0209] When the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 1, the first DMRS indication information can be indicated using 5 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 2, the first DMRS indication information can be indicated using 4 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 3, the first DMRS indication information can be indicated using 3 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 4, the first DMRS indication information can be indicated using 2 bits.

[0210] When the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 2, and the Rank is 1, the first DMRS indication information can be indicated by 6 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 2, the first DMRS indication information can be indicated by 6 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 3, the first DMRS indication information can be indicated by 4 bits; when the target DMRS type is the second configuration type, conversion precoding is disabled, the maximum symbol length of the target DMRS is 1, and the Rank is 4, the first DMRS indication information can be indicated by 3 bits.

[0211] Reference Figure 3 This application also provides a method for indicating demodulated reference signal information, including:

[0212] Step 301: The network-side device sends the first demodulation reference signal (DMRS) indication information to the terminal;

[0213] Wherein, the first DMRS indication information is used to determine the DMRS information of the target DMRS, wherein the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are the CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0214] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; and the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group.

[0215] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes any one of the following:

[0216] The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port;

[0217] The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port;

[0218] The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port;

[0219] The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0220] The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0221] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0222] The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port;

[0223] The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port.

[0224] The number of target CDM groups is 2. The port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0225] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port, wherein the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; and the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group.

[0226] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes any one of the following:

[0227] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes any one of the first port, second port, third port, and fourth port;

[0228] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port;

[0229] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port;

[0230] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0231] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0232] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0233] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port.

[0234] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port;

[0235] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

[0236] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the first port and the ninth port, or the fifth port and the thirteenth port;

[0237] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the ninth port, or the fifth port, the sixth port and the thirteenth port;

[0238] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the first port, the second port, the ninth port and the tenth port, or the fifth port, the sixth port, the thirteenth port and the fourteenth port;

[0239] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0240] The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port and the ninth port, or includes the first port, the second port, the third port, the fourth port, the ninth port and the tenth port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port and the eleventh port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port, the eleventh port and the twelfth port;

[0241] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the thirteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, and the fourteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

[0242] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, and a twelfth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group; and the ninth port, the tenth port, the eleventh port, and the twelfth port belong to a third CDM group.

[0243] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes any one of the following:

[0244] The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port;

[0245] The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port;

[0246] The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port;

[0247] The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0248] The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0249] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0250] The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port;

[0251] The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port.

[0252] The number of target CDM groups is 3, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, and the twelfth port;

[0253] The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the ninth port and the tenth port, or includes the eleventh port and the twelfth port;

[0254] The number of target CDM groups is 3, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0255] The number of target CDM groups is 3, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port;

[0256] The number of target CDM groups is 2 or 3, and the port information includes the first port, the second port, the third port, the fifth port and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port and the eighth port.

[0257] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, a sixteenth port, a seventeenth port, an eighteenth port, a nineteenth port, a twentieth port, a twenty-first port, a twenty-second port, a twenty-third port, and a twenty-fourth port. Specifically, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group; and the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port belong to a third CDM group.

[0258] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes any of the following:

[0259] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes any one of the first port, second port, third port, and fourth port;

[0260] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port;

[0261] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port;

[0262] The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port;

[0263] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port;

[0264] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port;

[0265] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port.

[0266] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port, or includes the fifth port, the sixth port, the seventh port, and the eighth port; or includes the first port, the fifth port, the sixth port, and the seventh port; or includes the first port, the second port, the third port, and the fifth port; or includes the first port, the second port, the fifth port, and the sixth port; or includes the first port, the third port, the fifth port, and the seventh port.

[0267] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, and the twelfth port;

[0268] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port;

[0269] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0270] The number of target CDM groups is 3, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port;

[0271] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, the sixteenth port, the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port.

[0272] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the seventeenth port and the eighteenth port, or the nineteenth port and the twentieth port, or the twentieth port and the twentieth port, or the twentieth port and the twentieth port, or the twentieth port and the twentieth port;

[0273] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the ninth port, the tenth port and the eleventh port;

[0274] The number of target CDM groups is 3, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the ninth port, the tenth port, the eleventh port and the twelfth port;

[0275] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port;

[0276] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port;

[0277] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port, the second port, and the third port, or includes the thirteenth port, the fourteenth port, and the fifteenth port;

[0278] The number of target CDM groups is 1, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or includes the thirteenth port, the fourteenth port, the fifteenth port and the sixteenth port;

[0279] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the seventeenth port and the eighteenth port, or the nineteenth port and the twentieth port;

[0280] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, and the third port, or includes the fifth port, the sixth port, and the seventh port;

[0281] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port;

[0282] The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

[0283] The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port, and the thirteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, and the fourteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the first port, the second port, the third port, the fourth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port;

[0284] The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the seventeenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, and the eighteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, the eighteenth port, and the nineteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the seventeenth port, the eighteenth port, the nineteenth port, and the twentieth port.

[0285] Optionally, the port information includes any of the following:

[0286] A CDM group contains N ports, where N is a positive integer less than or equal to 8;

[0287] M ports in one CDM group and M ports in another CDM group, where M is a positive integer less than or equal to 4;

[0288] One port in one CDM group and two ports in another CDM group;

[0289] One port in one CDM group and three ports in another CDM group;

[0290] Two ports in one CDM group and three ports in another CDM group;

[0291] Three ports in one CDM group and four ports in another CDM group.

[0292] Optionally, before the network-side device sends the first demodulation reference signal (DMRS) indication information to the terminal, the method further includes:

[0293] The network-side device receives first capability information reported by the terminal. The first capability information indicates whether the terminal supports the DMRS information of the target DMRS indicated by the network-side device through the first DMRS indication information.

[0294] Optionally, after the network-side device receives the first capability information reported by the terminal, the method further includes:

[0295] The network-side device sends first DMRS configuration information to the terminal. The first DMRS configuration information is used to instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information.

[0296] Optionally, after the network-side device receives the first capability information reported by the terminal, the method further includes:

[0297] The network-side device sends a second DMRS indication information to the terminal. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0298] Optionally, before the network-side device sends the first demodulation reference signal (DMRS) indication information to the terminal, the method further includes:

[0299] The network-side device receives second capability information reported by the terminal. The second capability information is used to indicate whether the terminal supports receiving second DMRS indication information. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0300] Optionally, the second DMRS indication information is located within the target indication field of the downlink control information.

[0301] Optionally, the method further includes:

[0302] The network-side device sends target indication information to the terminal. The target indication information is used to indicate rank information so that the terminal can determine the DMRS information of the target DMRS based on the first DMRS indication information and the rank information when the data channel corresponding to the target DMRS is a physical uplink shared channel.

[0303] In this embodiment, the DMRS information of the target DMRS is indicated by the first DMRS indication information, and ports belonging to the same Code Division Multiplexing (CDM) group in the target DMRS are mapped based on an FD-OCC sequence of length 4. This allows the DMRS of the data channel to support more ports. Therefore, this embodiment can improve the transmission capacity of the communication system.

[0304] The demodulation reference signal information determination method provided in this application can be executed by a demodulation reference signal information determination device. This application uses the demodulation reference signal information determination device executing the method as an example to illustrate the demodulation reference signal information determination device provided in this application.

[0305] Reference Figure 4 This application also provides a demodulation reference signal information determining device, the demodulation reference signal information determining device 400 including:

[0306] The first receiving module 401 is used to receive the first demodulation reference signal (DMRS) indication information sent by the network-side device;

[0307] The determining module 402 is used to determine the DMRS information of the target DMRS based on the first DMRS indication information;

[0308] Wherein, the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0309] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; and the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group.

[0310] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes first DMRS information or second DMRS information.

[0311] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port, wherein the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; and the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group.

[0312] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes third DMRS information or fourth DMRS information.

[0313] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, and a twelfth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group; and the ninth port, the tenth port, the eleventh port, and the twelfth port belong to a third CDM group.

[0314] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes fifth DMRS information or sixth DMRS information.

[0315] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, a sixteenth port, a seventeenth port, an eighteenth port, a nineteenth port, a twentieth port, a twenty-first port, a twenty-second port, a twenty-third port, and a twenty-fourth port. Specifically, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group; and the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port belong to a third CDM group.

[0316] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes seventh DMRS information or eighth DMRS information.

[0317] Optionally, the port information includes any of the following:

[0318] A CDM group contains N ports, where N is a positive integer less than or equal to 8;

[0319] M ports in one CDM group and M ports in another CDM group, where M is a positive integer less than or equal to 4;

[0320] One port in one CDM group and two ports in another CDM group;

[0321] One port in one CDM group and three ports in another CDM group;

[0322] Two ports in one CDM group and three ports in another CDM group;

[0323] Three ports in one CDM group and four ports in another CDM group.

[0324] Optionally, the demodulation reference signal information determining device 400 further includes:

[0325] The first sending module is used to report first capability information to the network-side device. The first capability information indicates whether the terminal supports the DMRS information of the target DMRS indicated by the network-side device through the first DMRS indication information.

[0326] Optionally, the first receiving module 401 is further configured to receive first DMRS configuration information sent by the network-side device, wherein the first DMRS configuration information is used to instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information.

[0327] Optionally, the first receiving module 401 is further configured to receive second DMRS indication information sent by the network-side device, the second DMRS indication information being used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0328] Optionally, the demodulation reference signal information determining device 400 further includes:

[0329] A first sending module is used to report second capability information to the network-side device. The second capability information is used to indicate whether the terminal supports receiving second DMRS indication information. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0330] Optionally, the second DMRS indication information is located within the target indication field of the downlink control information.

[0331] Optionally, the determining module 402 is further configured to determine the DMRS information of the target DMRS based on the first DMRS indication information and rank information when the data channel corresponding to the target DMRS is a physical uplink shared channel.

[0332] The demodulation reference signal information indication method provided in this application can be executed by a demodulation reference signal information indication device. This application uses the demodulation reference signal information indication device executing the method as an example to illustrate the demodulation reference signal information indication device provided in this application.

[0333] Reference Figure 5 This application also provides a demodulation reference signal information indicating device, the demodulation reference signal information indicating device 500 comprising:

[0334] The second transmitting module 501 is used to transmit the first demodulation reference signal DMRS indication information to the terminal.

[0335] Wherein, the first DMRS indication information is used to determine the DMRS information of the target DMRS, wherein the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM groups are the CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0336] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; and the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group.

[0337] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes first DMRS information or second DMRS information.

[0338] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port, wherein the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; and the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group.

[0339] Optionally, when the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes third DMRS information or fourth DMRS information.

[0340] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, and a twelfth port, wherein the first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group; and the ninth port, the tenth port, the eleventh port, and the twelfth port belong to a third CDM group.

[0341] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes fifth DMRS information or sixth DMRS information.

[0342] Optionally, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, a sixteenth port, a seventeenth port, an eighteenth port, a nineteenth port, a twentieth port, a twenty-first port, a twenty-second port, a twenty-third port, and a twenty-fourth port. Specifically, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to a first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to a second CDM group; and the seventeenth port, the eighteenth port, the nineteenth port, the twentieth port, the twenty-first port, the twenty-second port, the twenty-third port, and the twenty-fourth port belong to a third CDM group.

[0343] Optionally, when the target DMRS is a DMRS of the second configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes seventh DMRS information or eighth DMRS information.

[0344] Optionally, the port information includes any of the following:

[0345] A CDM group contains N ports, where N is a positive integer less than or equal to 8;

[0346] M ports in one CDM group and M ports in another CDM group, where M is a positive integer less than or equal to 4;

[0347] One port in one CDM group and two ports in another CDM group;

[0348] One port in one CDM group and three ports in another CDM group;

[0349] Two ports in one CDM group and three ports in another CDM group;

[0350] Three ports in one CDM group and four ports in another CDM group.

[0351] Optionally, the demodulation reference signal information indicating device 500 further includes:

[0352] The second receiving module is used to receive the first capability information reported by the terminal, wherein the first capability information indicates whether the terminal supports the DMRS information of the network-side device indicating the target DMRS through the first DMRS indication information.

[0353] Optionally, the second sending module 501 is further configured to send first DMRS configuration information to the terminal, the first DMRS configuration information being used to instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information.

[0354] Optionally, the second sending module 501 is further configured to send a second DMRS indication information to the terminal, the second DMRS indication information being used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0355] Optionally, the demodulation reference signal information indicating device 500 further includes:

[0356] The second receiving module is used to receive the second capability information reported by the terminal. The second capability information is used to indicate whether the terminal supports receiving the second DMRS indication information. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

[0357] Optionally, the second DMRS indication information is located within the target indication field of the downlink control information.

[0358] Optionally, the second sending module 501 is further configured to send target indication information to the terminal, the target indication information being used to indicate rank information, so that the terminal can determine the DMRS information of the target DMRS based on the first DMRS indication information and the rank information when the data channel corresponding to the target DMRS is a physical uplink shared channel.

[0359] The demodulation reference signal information determining device and demodulation reference signal information indicating device in this application embodiment can be electronic devices, such as electronic devices with an operating system, or components in electronic devices, such as integrated circuits or chips. The electronic device can be a terminal, or other devices besides a terminal. For example, the terminal can include, but is not limited to, the type of terminal 11 listed above; other devices can be servers, network attached storage (NAS), etc., and this application embodiment does not specifically limit the types.

[0360] The demodulation reference signal information determining device and demodulation reference signal information indicating device provided in this application embodiment can achieve Figures 2 to 3 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0361] Optional, such as Figure 6 As shown, this application embodiment also provides a communication device 600, including a processor 601 and a memory 602. The memory 602 stores a program or instructions that can run on the processor 601. For example, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various steps of the above-described demodulation reference signal information determination method embodiment, and achieve the same technical effect. When the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various steps of the above-described demodulation reference signal information indication method embodiment, and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0362] This application embodiment also provides a terminal, including a processor and a communication interface. The communication interface is used to receive first demodulation reference signal (DMRS) indication information sent by a network-side device. The processor is used to determine the DMRS information of a target DMRS based on the first DMRS indication information. The ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4. The DMRS information includes at least one of the following: the number of target CDM groups, where the target CDM groups are those CDM groups corresponding to the target DMRS that are not occupied by data; port information of the target DMRS; and the number of preamble symbols. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. Specifically, Figure 7 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0363] The terminal 700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[0364] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 7 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0365] It should be understood that, in this embodiment, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042. The GPU 7041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, power buttons, etc.), a trackball, a mouse, and a joystick, which will not be described in detail here.

[0366] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low-noise amplifier, duplexer, etc.

[0367] The memory 709 can be used to store software programs or instructions, as well as various data. The memory 709 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 709 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0368] Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 710.

[0369] The radio frequency unit 701 is used to receive the first demodulation reference signal (DMRS) indication information sent by the network-side device.

[0370] Processor 710 is configured to determine DMRS information of the target DMRS based on the first DMRS indication information;

[0371] Wherein, the ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; the port information of the target DMRS; and the number of preamble symbols.

[0372] This application embodiment also provides a network-side device, including a processor and a communication interface. The communication interface is used to send a first demodulation reference signal (DMRS) indication information to a terminal. The first DMRS indication information is used to determine the DMRS information of a target DMRS. Ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4. The DMRS information includes at least one of the following: the number of target CDM groups, where the target CDM groups are those CDM groups corresponding to the target DMRS that are not occupied by data; port information of the target DMRS; and the number of preamble symbols. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above method embodiments can be applied to this network-side device embodiment and achieve the same technical effects.

[0373] Specifically, embodiments of this application also provide a network-side device. For example... Figure 8 As shown, the network-side device 800 includes: an antenna 801, a radio frequency (RF) device 802, a baseband device 803, a processor 804, and a memory 805. The antenna 801 is connected to the RF device 802. In the uplink direction, the RF device 802 receives information through the antenna 801 and transmits the received information to the baseband device 803 for processing. In the downlink direction, the baseband device 803 processes the information to be transmitted and sends it to the RF device 802. The RF device 802 processes the received information and transmits it through the antenna 801.

[0374] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 803, which includes a baseband processor.

[0375] The baseband device 803 may, for example, include at least one baseband board on which multiple chips are disposed, such as... Figure 8 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 805 via a bus interface to call the program in the memory 805 and execute the network device operation shown in the above method embodiment.

[0376] The network-side device may also include a network interface 806, such as a common public radio interface (CPRI).

[0377] Specifically, the network-side device 800 of this embodiment further includes: instructions or programs stored in a memory 805 and executable on a processor 804, wherein the processor 804 calls the instructions or programs in the memory 805 to execute... Figure 5 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0378] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described demodulation reference signal information determination method or demodulation reference signal information indication method, and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0379] The processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0380] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described demodulation reference signal information determination method or demodulation reference signal information indication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0381] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0382] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described demodulation reference signal information determination method or demodulation reference signal information indication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0383] This application also provides a communication system, including: a terminal and a network-side device, wherein the terminal is used to perform, for example... Figure 2 And the various processes of the above method embodiments, the network-side device is used to perform such... Figure 3 The processes of the above-described method embodiments are all the same and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0384] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0385] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0386] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for determining demodulation reference signal information, characterized in that, include: The terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device; The terminal determines the DMRS information of the target DMRS based on the first DMRS indication information; Wherein, ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; port information of the target DMRS; number of preamble symbols; The DMRS information that the terminal determines based on the first DMRS indication information for the target DMRS includes: When the data channel corresponding to the target DMRS is the Physical Uplink Shared Channel (PUSCH), the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information and the rank information. Wherein, when the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 1, and the rank of the rank information is 1, the first DMRS indication information is indicated by 4 bits; When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 1, the first DMRS indication information is indicated by 5 bits. When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 2, the first DMRS indication information is indicated by 5 bits. Wherein, if the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port. The first port, the second port, the third port, and the fourth port belong to the first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to the second CDM group. or, When the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the ports supported by the target DMRS include the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port. Among them, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to the first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to the second CDM group.

2. The method according to claim 1, characterized in that, When the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes any one of the following: The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port; The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port; The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port; The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port; The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port; The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port. The number of target CDM groups is 2. The port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

3. The method according to claim 1, characterized in that, When the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes any one of the following: The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes any one of the first port, second port, third port, and fourth port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port. The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port. The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the first port and the ninth port, or the fifth port and the thirteenth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the ninth port, or the fifth port, the sixth port and the thirteenth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the first port, the second port, the ninth port and the tenth port, or the fifth port, the sixth port, the thirteenth port and the fourteenth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port. The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port and the ninth port, or includes the first port, the second port, the third port, the fourth port, the ninth port and the tenth port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port and the eleventh port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port, the eleventh port and the twelfth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the thirteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, and the fourteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

4. The method according to claim 1, characterized in that, The port information includes any of the following: A CDM group contains N ports, where N is a positive integer less than or equal to 8; M ports in one CDM group and M ports in another CDM group, where M is a positive integer less than or equal to 4; One port in one CDM group and two ports in another CDM group; One port in one CDM group and three ports in another CDM group; Two ports in one CDM group and three ports in another CDM group; Three ports in one CDM group and four ports in another CDM group.

5. The method according to claim 1, characterized in that, Before the terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device, the method further includes: The terminal reports first capability information to the network-side device, the first capability information indicating whether the terminal supports the network-side device in indicating the target DMRS information through the first DMRS indication information.

6. The method according to claim 5, characterized in that, After the terminal reports the first capability information to the network-side device, the method further includes: The terminal receives first DMRS configuration information sent by the network-side device. The first DMRS configuration information is used to instruct the terminal to determine the DMRS information of the target DMRS based on the first DMRS indication information.

7. The method according to claim 5, characterized in that, After the terminal reports the first capability information to the network-side device, the method further includes: The terminal receives a second DMRS indication information sent by the network-side device. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

8. The method according to claim 1, characterized in that, Before the terminal receives the first demodulation reference signal (DMRS) indication information sent by the network-side device, the method further includes: The terminal reports second capability information to the network-side device. The second capability information is used to indicate whether the terminal supports receiving second DMRS indication information. The second DMRS indication information is used to indicate whether the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information.

9. The method according to claim 8, characterized in that, The second DMRS indication information is located within the target indication field in the downlink control information.

10. A method for indicating demodulated reference signal information, characterized in that, include: The network-side device sends the first demodulation reference signal (DMRS) indication information to the terminal; The first DMRS indication information is used to determine the DMRS information of the target DMRS. The ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4. The DMRS information includes at least one of the following: the number of target CDM groups, where the target CDM groups are those CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols. The first DMRS indication information is used to determine the DMRS information of the target DMRS, including: When the data channel corresponding to the target DMRS is the Physical Uplink Shared Channel (PUSCH), the first DMRS indication information and rank information are used to determine the DMRS information of the target DMRS. Wherein, when the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 1, and the rank of the rank information is 1, the first DMRS indication information is indicated by 4 bits; When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 1, the first DMRS indication information is indicated by 5 bits. When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 2, the first DMRS indication information is indicated by 5 bits. The target DMRS supports ports including a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port. The first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group. or, The ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port. Among them, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to the first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to the second CDM group.

11. The method according to claim 10, characterized in that, When the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 1, the DMRS information includes any one of the following: The number of target CDM groups is 1, and the port information includes any one of the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port; The number of target CDM groups is 1, and the port information includes the first port, the second port, and the third port; The number of target CDM groups is 1, and the port information includes the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 2, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port; The number of target CDM groups is 2, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port; The number of target CDM groups is 2, and the port information includes the first port, the second port and the third port, or includes the fifth port, the sixth port and the seventh port, or includes the first port, the second port and the fifth port, or includes the first port, the fifth port and the sixth port, or includes the first port, the third port and the fifth port; The number of target CDM groups is 2. The port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port. The number of target CDM groups is 2. The port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port.

12. The method according to claim 10, characterized in that, When the target DMRS is a DMRS of the first configuration type and the maximum symbol length of the target DMRS is 2, the DMRS information includes any one of the following: The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes any one of the first port, second port, third port, and fourth port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port and the second port, or the third port and the fourth port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, and the third port; The number of target CDM groups is 1, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, and the fourth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes any one of the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port and the second port, or includes the third port and the fourth port, or includes the fifth port and the sixth port, or includes the seventh port and the eighth port, or includes the first port and the fifth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the fifth port, or the first port, the fifth port and the sixth port, or the first port, the third port and the fifth port. The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port and the fourth port, or includes the fifth port, the sixth port, the seventh port and the eighth port, or includes the first port, the fifth port, the sixth port and the seventh port, or includes the first port, the second port, the third port and the fifth port, or includes the first port, the second port, the fifth port and the sixth port, or includes the first port, the third port, the fifth port and the seventh port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes any one of the following: the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, the eighth port, the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port. The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port and the second port, or the third port and the fourth port, or the fifth port and the sixth port, or the seventh port and the eighth port, or the ninth port and the tenth port, or the eleventh port and the twelfth port, or the thirteenth port and the fourteenth port, or the fifteenth port and the sixteenth port, or the first port and the ninth port, or the fifth port and the thirteenth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port and the third port, or the fifth port, the sixth port and the seventh port, or the first port, the second port and the ninth port, or the fifth port, the sixth port and the thirteenth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port and the fourth port, or the fifth port, the sixth port, the seventh port and the eighth port, or the first port, the second port, the ninth port and the tenth port, or the fifth port, the sixth port, the thirteenth port and the fourteenth port; The number of target CDM groups is 2, the number of preamble symbols is 1, and the port information includes the first port, the second port, the third port, the fifth port, and the sixth port, or includes the first port, the second port, the third port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, and the seventh port, or includes the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port. The number of target CDM groups is 1 or 2, the number of preamble symbols is 2, and the port information includes the first port, the second port, the third port, the fourth port and the ninth port, or includes the first port, the second port, the third port, the fourth port, the ninth port and the tenth port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port and the eleventh port, or includes the first port, the second port, the third port, the fourth port, the ninth port, the tenth port, the eleventh port and the twelfth port; The number of target CDM groups is 2, the number of preamble symbols is 2, and the port information includes the fifth port, the sixth port, the seventh port, the eighth port, and the thirteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, and the fourteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, and the fifteenth port, or includes the fifth port, the sixth port, the seventh port, the eighth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port.

13. A demodulation reference signal information determination device, characterized in that, include: The first receiving module is used to receive the first demodulation reference signal (DMRS) indication information sent by the network-side device. The determination module is used to determine the DMRS information of the target DMRS based on the first DMRS indication information; Wherein, ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4; the DMRS information includes at least one of the following: the number of target CDM groups, wherein the target CDM group is the CDM group corresponding to the target DMRS that is not occupied by data; port information of the target DMRS; number of preamble symbols; The DMRS information that the terminal determines for the target DMRS based on the first DMRS indication information includes: When the data channel corresponding to the target DMRS is the Physical Uplink Shared Channel (PUSCH), the terminal determines the DMRS information of the target DMRS based on the first DMRS indication information and the rank information. Wherein, when the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 1, and the rank of the rank information is 1, the first DMRS indication information is indicated by 4 bits; When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 1, the first DMRS indication information is indicated by 5 bits. When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 2, the first DMRS indication information is indicated by 5 bits. The target DMRS supports ports including a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port. The first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group. or, The ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port. Among them, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to the first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to the second CDM group.

14. A demodulation reference signal information indicating device, characterized in that, include: The second transmitting module is used to send the first demodulation reference signal (DMRS) indication information to the terminal. The first DMRS indication information is used to determine the DMRS information of the target DMRS. The ports belonging to the same code division multiplexing (CDM) group in the target DMRS are mapped based on a frequency division orthogonal overlay code (FD-OCC) sequence of length 4. The DMRS information includes at least one of the following: the number of target CDM groups, where the target CDM groups are those CDM groups corresponding to the target DMRS that are not occupied by data; the port information of the target DMRS; and the number of preamble symbols. The first DMRS indication information is used to determine the DMRS information of the target DMRS, including: When the data channel corresponding to the target DMRS is the Physical Uplink Shared Channel (PUSCH), the first DMRS indication information and rank information are used to determine the DMRS information of the target DMRS. Wherein, when the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 1, and the rank of the rank information is 1, the first DMRS indication information is indicated by 4 bits; When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 1, the first DMRS indication information is indicated by 5 bits. When the type of the target DMRS is the first configuration type, conversion precoding is not enabled, the maximum symbol length of the target DMRS is 2, and the rank of the rank information is 2, the first DMRS indication information is indicated by 5 bits. The target DMRS supports ports including a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, and an eighth port. The first port, the second port, the third port, and the fourth port belong to a first CDM group; the fifth port, the sixth port, the seventh port, and the eighth port belong to a second CDM group. or, The ports supported by the target DMRS include a first port, a second port, a third port, a fourth port, a fifth port, a sixth port, a seventh port, an eighth port, a ninth port, a tenth port, an eleventh port, a twelfth port, a thirteenth port, a fourteenth port, a fifteenth port, and a sixteenth port. Among them, the first port, the second port, the third port, the fourth port, the fifth port, the sixth port, the seventh port, and the eighth port belong to the first CDM group; the ninth port, the tenth port, the eleventh port, the twelfth port, the thirteenth port, the fourteenth port, the fifteenth port, and the sixteenth port belong to the second CDM group.

15. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the demodulation reference signal information determination method as described in any one of claims 1 to 9.

16. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the demodulation reference signal information indication method as described in any one of claims 10 to 12.

17. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the demodulation reference signal information determination method as described in any one of claims 1 to 9, or the steps of the demodulation reference signal information indication method as described in any one of claims 10 to 12.

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