Communication method, communication device, communication system and storage medium

Abstract

Provided in the present disclosure are a communication method, a communication device, a communication system and a storage medium. The method comprises: sending first information to a network device, wherein the first information is used for indicating at least one demodulation reference signal (DMRS) pattern. By means of the method in the present disclosure, the stability and accuracy of the transmission of DMRSs can be ensured.

Description

Communication method, communication device, communication system, storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, a communication device, a communication system and a storage medium. BACKGROUND

[0002] In a communication system, a demodulation reference signal (DMRS) is usually needed to be transmitted for channel estimation. However, the DMRS pattern required by a terminal under different channel conditions can be different, and how to determine the most suitable DMRS pattern for the terminal is a problem to be solved.

[0003] SUMMARY

[0004] The present disclosure provides a communication method, a communication device, a communication system and a storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is provided, executed by a terminal, comprising:

[0006] sending first information to a network device, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is provided, executed by a network device, comprising:

[0008] receiving first information sent by a terminal, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

[0009] According to a third aspect of an embodiment of the present disclosure, a communication method is provided, used in a communication system, the communication system comprising a terminal and a network device, the method comprising:

[0010] the terminal sends first information to the network device, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern;

[0011] the network device receives the first information sent by the terminal.

[0012] According to a fourth aspect of an embodiment of the present disclosure, a terminal is provided, comprising:

[0013] a transceiver module, configured to send first information to a network device, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

[0014] According to a fifth aspect of the embodiments of the present disclosure, a network device is provided, comprising:

[0015] a transceiver, configured to receive first information sent by the terminal, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

[0016] According to a sixth aspect of the embodiments of the present disclosure, a communication device is provided, comprising:

[0017] one or more processors;

[0018] The processor is configured to invoke instructions to cause the communication device to perform the communication method according to any one of the first aspect to the second aspect.

[0019] According to a seventh aspect of the embodiments of the present disclosure, a communication system is provided, comprising a terminal and a network device, wherein the terminal is configured to implement the communication method according to the first aspect, and the network device is configured to implement the communication method according to the second aspect.

[0020] According to an eighth aspect of the embodiments of the present disclosure, a storage medium is provided, which stores instructions, when the instructions are run on a communication device, causing the communication device to perform the communication method according to any one of the first aspect to the second aspect.

[0021] According to a ninth aspect, the embodiments of the present disclosure provide a program product, comprising a computer program, and the computer program is executed by a communication device to implement the communication method according to the first aspect and the second aspect.

[0022] According to a tenth aspect, the embodiments of the present disclosure provide a computer program, when it is run on a computer, causing the computer to perform the communication method according to the first aspect and the second aspect.

[0023] It can be understood that the terminal, the network device, the communication device, the communication system, the storage medium, the program product and the computer program are all used to perform the method provided by the embodiments of the present disclosure. Therefore, the beneficial effects achieved by them can refer to the beneficial effects in the corresponding method, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0024] The above and / or additional aspects and advantages of the present disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, wherein:

[0025] FIG. 1 is a schematic diagram of the architecture of some communication systems according to an embodiment of the present disclosure;

[0026] FIG. 2A is an interaction diagram of a communication method according to an embodiment of the present disclosure;

[0027] Figures 2B-2M are schematic diagrams of the structure of a DMRS pattern provided in an embodiment of this disclosure;

[0028] Figure 3 is a flowchart illustrating a communication method provided in another embodiment of this disclosure;

[0029] Figure 4 is a flowchart illustrating a communication method provided in another embodiment of this disclosure;

[0030] Figure 5 is a flowchart illustrating a communication method provided in another embodiment of this disclosure;

[0031] Figure 6A is a schematic diagram of the structure of a terminal provided in an embodiment of this disclosure;

[0032] Figure 6B is a schematic diagram of the structure of a network device provided in an embodiment of this disclosure;

[0033] Figure 7A is a schematic diagram of the structure of a communication device provided in an embodiment of this disclosure;

[0034] Figure 7B is a schematic diagram of the structure of a chip provided in an embodiment of this disclosure. Detailed Implementation

[0035] This disclosure provides embodiments of a communication method, a communication device, a communication system, and a storage medium.

[0036] In a first aspect, embodiments of this disclosure provide a communication method executed by a terminal, the method comprising:

[0037] Send a first message to the network device, the first message being used to indicate at least one demodulation reference signal (DMRS) pattern.

[0038] In the above embodiments, the terminal can send first information to the network device, the first information being used to indicate at least one DMRS pattern, and the network device can determine a suitable DMRS pattern for the terminal based on the first information and indicate it to the terminal. When the terminal sends DMRS based on the DMRS pattern indicated by the network device, the transmission stability and accuracy of DMRS can be ensured.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments, the DMRS pattern is used to determine the time-domain resources and / or frequency-domain resources of the DMRS;

[0040] The frequency domain resources of the DMRS include at least one of the following:

[0041] The number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs);

[0042] a location of an RE occupied by each DMRS port in every N RBs; wherein N is a positive integer.

[0043] In the above embodiments, it is explained that the DMRS pattern can be used to determine the time-frequency resource of the DMRS, and it is explained that the frequency domain resource of the DMRS specifically includes which information. Thus, when the network device receives the first information sent by the terminal, the DMRS pattern provided by the terminal can be determined based on the first information, and further, the appropriate DMRS pattern for the terminal can be determined based on the time-frequency resource indicated by the DMRS pattern and indicated to the terminal, so as to ensure the transmission stability and accuracy of the DMRS.

[0044] In some embodiments of the first aspect, the method further comprises:

[0045] reporting the following at least one to the network device:

[0046] at least one first value M supported by the terminal, wherein the M is a number of REs occupied by each DMRS port in each RB on average;

[0047] the terminal supports a first function, and the first function includes at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0048] In some embodiments of the first aspect, the M is a value greater than or equal to 0; wherein

[0049] the M = 0, the DMRS occupies the same RE as the first signal, or the DMRS occupies the same RE as the first channel, or the DMRS does not exist;

[0050] the M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0051] the first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0052] In some embodiments of the first aspect, the at least one first value M includes at least one of the following:

[0053] a value of the M when the terminal performs AI-based DMRS channel estimation;

[0054] The value of M when the terminal does not perform DMRS channel estimation based on AI.

[0055] In the above embodiments, the terminal can further report at least one first value M supported by the terminal to the network device, and / or the terminal can further report to the network device that the terminal supports AI-based DMRS channel estimation, so that the network device can accurately determine the appropriate DMRS pattern of the terminal based on the report of the terminal and instruct the terminal, to ensure the stability and accuracy of DMRS transmission.

[0056] In some embodiments of the first aspect, in some embodiments, the at least one DMRS pattern includes at least one of: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of:

[0057] The first DMRS pattern supports a number of DMRS ports greater than the number of DMRS ports supported by the second DMRS pattern;

[0058] The first DMRS pattern occupies less time domain resources than the second DMRS pattern;

[0059] The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed in bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed in bandwidth.

[0060] In the above embodiments, it is explained that the terminal can provide which DMRS pattern to the network device through the first information, so that the network device can determine the appropriate DMRS pattern of the terminal based on the DMRS pattern provided by the terminal and instruct the terminal, to ensure the stability and accuracy of DMRS transmission.

[0061] In some embodiments of the first aspect, in some embodiments, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0062] In some embodiments of the first aspect, in some embodiments, in the first DMRS pattern, each DMRS port occupies an average number of REs in each RB, which is less than 1.

[0063] In some embodiments of the first aspect, in some embodiments, the first DMRS pattern occupies one symbol, supports 2 code division multiplexing (CDM) groups, each CDM group includes 8*M DMRS ports, and M is a positive integer.

[0064] In some embodiments of the first aspect, in some embodiments, the first DMRS pattern occupies two symbols, supports 2 CDM groups, each CDM group includes 16*M DMRS ports, and M is a positive integer.

[0065] In some embodiments of the first aspect, in some embodiments, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 4*M*F RBs, and F is a non-negative positive integer.

[0066] In some embodiments of the first aspect, in some embodiments, the first DMRS pattern occupies one symbol, supports 3 CDM groups, each CDM group includes 8*A DMRS ports, and A is a positive integer.

[0067] In some embodiments of the first aspect, in some embodiments, the first DMRS pattern occupies two symbols, supports 3 CDM groups, each CDM group includes 16*A DMRS ports, and A is a positive integer.

[0068] In some embodiments of the first aspect, in some embodiments, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 2*A*C RBs, and C is a non-negative integer.

[0069] In the above embodiments, a plurality of "DMRS patterns occupying fewer REs" are designed, so that the DMRS can be transmitted based on these patterns, reducing signaling overhead and communication cost.

[0070] In a second aspect, the embodiments of the present disclosure provide a communication method, performed by a network device, the method comprising:

[0071] Receiving first information sent by a terminal, the first information being used to indicate at least one demodulation reference signal (DMRS) pattern.

[0072] In some embodiments of the second aspect, in some embodiments, the DMRS pattern is used to determine time domain resources and / or frequency domain resources of the DMRS.

[0073] The frequency domain resources of the DMRS include at least one of the following:

[0074] a number of resource elements (REs) occupied by each DMRS port in every N resource block (RB);

[0075] a location of REs occupied by each DMRS port in every N RB; wherein N is a positive integer.

[0076] In some embodiments in combination with the second aspect, the method further comprises:

[0077] receiving at least one of the following reported by the terminal:

[0078] at least one first value M supported by the terminal, wherein M is a number of REs occupied by each DMRS port in every RB on average.

[0079] the terminal supports a first function, wherein the first function comprises at least one of: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0080] In some embodiments in combination with the second aspect, in some embodiments, M is a value greater than or equal to 0; wherein

[0081] M = 0, the DMRS occupies the same REs as the first signal, or the DMRS occupies the same REs as the first channel, or the DMRS does not exist;

[0082] M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0083] the first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0084] In some embodiments in combination with the second aspect, in some embodiments, the at least one first value M comprises at least one of:

[0085] a value of M when the terminal performs AI-based DMRS channel estimation;

[0086] a value of M when the terminal does not perform AI-based DMRS channel estimation.

[0087] In some embodiments of the second aspect, in some embodiments, the at least one DMRS pattern comprises at least one of: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of:

[0088] the first DMRS pattern supports a number of DMRS ports greater than a number of DMRS ports supported by the second DMRS pattern;

[0089] the first DMRS pattern occupies a smaller number of time domain resources than the second DMRS pattern;

[0090] the first DMRS pattern occupies frequency domain resources that are non-uniformly distributed over a bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed over the bandwidth.

[0091] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0092] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0093] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies a single symbol and supports 2 code division multiplexing (CDM) groups; each CDM group comprises 8 x M DMRS ports; and M is a positive integer.

[0094] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies two symbols and supports 2 CDM groups; each CDM group comprises 16 x M DMRS ports; and M is a positive integer.

[0095] In some embodiments of the second aspect, in some embodiments, a starting position of a first RB of the RBs corresponding to the first DMRS pattern is separated from the point A by 4 x M x F RBs; and F is a non-negative positive integer.

[0096] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies a single symbol and supports 3 CDM groups; each CDM group comprises 8 x A DMRS ports; and A is a positive integer.

[0097] In some embodiments of the second aspect, in some embodiments, the first DMRS pattern occupies two symbols, and 3 CDM groups are supported; each CDM group includes 16*A DMRS ports; A is a positive integer.

[0098] In some embodiments of the second aspect, in some embodiments, a starting position of a first RB corresponding to the first DMRS pattern and the point A are separated by 2*A*C RBs; C is a non-negative integer.

[0099] In a third aspect, the embodiments of the present disclosure provide a communication method, used for a communication system, the communication system including a terminal and a network device, and the method includes:

[0100] The terminal sends first information to the network device, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

[0101] The network device receives the first information sent by the terminal.

[0102] In a fourth aspect, the embodiments of the present disclosure provide a terminal, including:

[0103] The transceiver module is configured to send first information to the network device, the first information being used for indicating at least one DMRS pattern.

[0104] In some embodiments of the fourth aspect, in some embodiments, the DMRS pattern is used for determining time domain resources and / or frequency domain resources of the DMRS.

[0105] The frequency domain resources of the DMRS include at least one of the following:

[0106] A number of resource elements (REs) occupied by each DMRS port in every N RBs;

[0107] A position of an RE occupied by each DMRS port in every N RBs; N is a positive integer.

[0108] In some embodiments of the fourth aspect, in some embodiments, the method further includes:

[0109] Reporting at least one of the following to the network device:

[0110] At least one first value M supported by the terminal, the M being a number of REs occupied by each DMRS port in every RB on average;

[0111] The terminal supports a first function, and the first function includes at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0112] In some embodiments in combination with the fourth aspect, in some embodiments, the M is a value greater than or equal to 0; wherein

[0113] The M = 0, the DMRS occupies the same RE as the first signal, or the DMRS occupies the same RE as the first channel, or the DMRS does not exist;

[0114] The M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0115] The first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0116] In some embodiments in combination with the fourth aspect, in some embodiments, the at least one first value M includes at least one of the following:

[0117] The value of the M when the terminal performs AI-based DMRS channel estimation;

[0118] The value of the M when the terminal does not perform AI-based DMRS channel estimation.

[0119] In some embodiments in combination with the fourth aspect, in some embodiments, the at least one DMRS pattern includes at least one of the following: a first DMRS pattern and a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of the following:

[0120] The first DMRS pattern supports a number of DMRS ports greater than a number of DMRS ports supported by the second DMRS pattern;

[0121] The first DMRS pattern occupies less time domain resources than the second DMRS pattern;

[0122] The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed in bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed in bandwidth.

[0123] In some embodiments of the fourth aspect, in some embodiments, the first DMRS pattern occupies an integer greater than or equal to 0 symbols.

[0124] In some embodiments of the fourth aspect, in some embodiments, in the first DMRS pattern, each DMRS port occupies an average of less than 1 RE per RB.

[0125] In some embodiments of the fourth aspect, in some embodiments, the first DMRS pattern occupies a single symbol, supports 2 code division multiplexing (CDM) groups; each CDM group includes 8 x M DMRS ports; M is a positive integer.

[0126] In some embodiments of the fourth aspect, in some embodiments, the first DMRS pattern occupies two symbols, supports 2 CDM groups; each CDM group includes 16 x M DMRS ports; M is a positive integer.

[0127] In some embodiments of the fourth aspect, in some embodiments, the starting position of the first RB of the RB corresponding to the first DMRS pattern is separated from point A by 4 x M x F RBs; F is a non-negative positive integer.

[0128] In some embodiments of the fourth aspect, in some embodiments, the first DMRS pattern occupies a single symbol, supports 3 CDM groups; each CDM group includes 8 x A DMRS ports; A is a positive integer.

[0129] In some embodiments of the fourth aspect, in some embodiments, the first DMRS pattern occupies two symbols, supports 3 CDM groups; each CDM group includes 16 x A DMRS ports; A is a positive integer.

[0130] In some embodiments of the fourth aspect, in some embodiments, the starting position of the first RB of the RB corresponding to the first DMRS pattern is separated from point A by 2 x A x C RBs; C is a non-negative integer.

[0131] In a fifth aspect, the embodiments of the present disclosure provide a network device, comprising:

[0132] The transceiver is configured to receive first information sent by a terminal, wherein the first information is used to indicate at least one demodulation reference signal (DMRS) pattern.

[0133] In some embodiments of the fifth aspect, in some embodiments, the DMRS pattern is used to determine time domain resources and / or frequency domain resources of the DMRS.

[0134] The frequency domain resources of the DMRS include at least one of:

[0135] A number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs);

[0136] A location of REs occupied by each DMRS port in every N RBs; wherein N is a positive integer.

[0137] In some embodiments of the fifth aspect, in some embodiments, the method further includes:

[0138] Receiving at least one of the following reported by a terminal:

[0139] At least one first value M supported by the terminal, wherein M is a number of REs occupied by each DMRS port in every RB on average;

[0140] The terminal supports a first function, wherein the first function includes at least one of: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0141] In some embodiments of the fifth aspect, in some embodiments, M is a value greater than or equal to 0; wherein

[0142] M = 0, the DMRS occupies the same REs as a first signal, or the DMRS occupies the same REs as a first channel, or the DMRS does not exist;

[0143] M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0144] The first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0145] In some embodiments of the fifth aspect, in some embodiments, the at least one first value M includes at least one of:

[0146] A value of M when the terminal performs AI-based DMRS channel estimation;

[0147] The value of M when the terminal does not perform DMRS channel estimation based on AI.

[0148] In some embodiments of the fifth aspect, in some embodiments, the at least one DMRS pattern includes at least one of: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of:

[0149] The first DMRS pattern supports a number of DMRS ports greater than a number of DMRS ports supported by the second DMRS pattern;

[0150] The first DMRS pattern occupies less time domain resources than the second DMRS pattern.

[0151] The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed in bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed in bandwidth.

[0152] In some embodiments of the fifth aspect, in some embodiments, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0153] In some embodiments of the fifth aspect, in some embodiments, in the first DMRS pattern, each DMRS port occupies an average number of REs in each RB that is less than 1.

[0154] In some embodiments of the fifth aspect, in some embodiments, the first DMRS pattern occupies a single symbol and supports 2 code division multiplexing (CDM) groups; each CDM group includes 8xM DMRS ports; M is a positive integer.

[0155] In some embodiments of the fifth aspect, in some embodiments, the first DMRS pattern occupies two symbols and supports 2 CDM groups; each CDM group includes 16xM DMRS ports; M is a positive integer.

[0156] In some embodiments of the fifth aspect, in some embodiments, a starting position of a first RB of the RB corresponding to the first DMRS pattern is spaced apart from the point A by 4xMxF RBs; F is a non-negative positive integer.

[0157] In some embodiments of the fifth aspect, in some embodiments, the first DMRS pattern occupies one symbol, 3 CDM groups are supported, and each CDM group includes 8xA DMRS ports, where a is a positive integer.

[0158] In some embodiments of the fifth aspect, in some embodiments, the first DMRS pattern occupies two symbols, 3 CDM groups are supported, and each CDM group includes 16xA DMRS ports, where a is a positive integer.

[0159] In some embodiments of the fifth aspect, in some embodiments, a starting position of a first RB of the RBs corresponding to the first DMRS pattern is spaced apart from the point A by 2xAxC RBs, where c is a non-negative integer.

[0160] In a sixth aspect, the embodiments of the present disclosure provide a communication device, which includes one or more processors, one or more memories for storing instructions, and the processor is configured to invoke the instructions to cause the communication device to perform the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0161] In a seventh aspect, the embodiments of the present disclosure provide a communication system, which includes a terminal and a network device, the terminal is configured to perform the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to perform the method described in the second aspect and the optional implementation of the second aspect.

[0162] In an eighth aspect, the embodiments of the present disclosure provide a storage medium, which stores instructions, and when the instructions are run on a communication device, the communication device performs the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0163] In a ninth aspect, the embodiments of the present disclosure provide a program product, which includes a computer program, and when the computer program is executed by a processor, the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect is implemented.

[0164] In a tenth aspect, the embodiments of the present disclosure provide a computer program, and when the computer program is run on a computer, the computer performs the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect.

[0165] It is understood that the aforementioned terminals, network devices, communication devices, communication systems, storage media, program products, and computer programs are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0166] This disclosure provides communication methods, communication devices, communication systems, and storage media. In some embodiments, the terms "communication method" can be used interchangeably with "information processing method," "information sending method," and "information receiving method," and the terms "communication device" can be used interchangeably with "information processing device," "information sending device," and "information receiving device," and the terms "information processing system," "communication system," "information sending system," and "information receiving system" can be used interchangeably.

[0167] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0168] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0169] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0170] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0171] In the embodiments disclosed herein, "multiple" refers to two or more.

[0172] In some embodiments, the terms “at least one of,” “at least one of,” “at least one of,” “one or more,” “a plurality of,” “multiple,” and the like can be replaced with each other.

[0173] In the description of the embodiments of the present disclosure, the description modes such as “at least one of A, B, and C”, “A and / or B and / or C”, and the like include any one of A, B, and C existing alone, and also include any combination of any number of A, B, and C, and each case can exist alone; for example, “at least one of A, B, and C” includes a case of A alone, a case of B alone, a case of C alone, a case of a combination of A and B, a case of a combination of A and C, a case of a combination of B and C, and a case of a combination of A and B and C; for example, A and / or B includes a case of A alone, a case of B alone, and a case of a combination of A and B.

[0174] In some embodiments, the description modes such as “A in a case, B in another case”, “in response to a case A, in response to another case B”, and the like can include the following technical solutions according to the cases: A is executed regardless of B, that is, A in some embodiments; B is executed regardless of A, that is, B in some embodiments; A and B are selectively executed, that is, A and B are selected from A and B to be executed in some embodiments; A and B are both executed, that is, A and B in some embodiments. When there are more branches of A, B, C, and the like, it is similar to the above.

[0175] The prefix words of "first", "second" and the like in the embodiments of the present disclosure are merely used to distinguish different description objects, and do not constitute limitation on the position, order, priority, quantity or content of the description objects. The description objects are described in the claims or embodiments, and should not be construed as redundant limitation because of the use of the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields", and "first" and "second" do not limit whether the "fields" modified thereby are in the same message or not, nor limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", wherein the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and the types thereof can be the same or different. For another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and the contents thereof can be the same or different.

[0176] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0177] In some embodiments, the terms of "in response to", "in response to determining", "in the case of", "when", "when", "if", "if" and the like can be replaced with each other.

[0178] In some embodiments, the terms of "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not lower than", "above" and the like can be replaced with each other, and the terms of "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", "below" and the like can be replaced with each other.

[0179] In some embodiments, an apparatus or the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms "apparatus", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject" and the like can be replaced with each other.

[0180] In some embodiments, a "network" can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0181] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like can be replaced with each other.

[0182] In some embodiments, the terms "terminal," "terminal device," "user equipment (UE)," "user terminal," "mobile station (MS)," "mobile terminal (MT)," "subscriber station," "mobile unit," "subscriber unit," "wireless unit," "remote unit," "mobile device," "wireless device," "wireless communication device," "remote device," "mobile subscriber station," "access terminal," "mobile terminal," "wireless terminal," "remote terminal," "handset," "user agent," "mobile client," "client," and so on can be replaced with each other.

[0183] In some embodiments, an access network device, a core network device, or a network device can be replaced with a terminal. For example, for a structure in which communication between an access network device, a core network device, or a network device and a terminal is replaced with communication between a plurality of terminals (for example, also referred to as device-to-device (D2D), vehicle-to-everything (V2X), and so on), embodiments of the present disclosure can also be applied. In this case, a structure in which a terminal has all or part of the functions of an access network device can also be provided. Furthermore, the language of "uplink," "downlink," and so on can also be replaced with language corresponding to communication between terminals (for example, "side"). For example, an uplink channel, a downlink channel, and so on can be replaced with a side channel, and an uplink, a downlink, and so on can be replaced with a side link.

[0184] In some embodiments, a terminal can be replaced with an access network device, a core network device, or a network device. In this case, a structure in which an access network device, a core network device, or a network device has all or part of the functions of a terminal can also be provided.

[0185] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country where the location is situated.

[0186] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0187] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0188] The correspondence shown in each table in the present disclosure can be configured or predefined. The values of the information in each table are merely examples, and other values can be configured, and the present disclosure is not limited thereto. When configuring the correspondence between the information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, the correspondences shown in some rows in the table in the present disclosure can also not be configured. For another example, the above table can be appropriately deformed, adjusted, etc., for example, split, merged, etc. The names of the parameters shown in the titles of the above tables can also use other names understandable by the communication device, and the values or representations of the parameters can also use other values or representations understandable by the communication device. When implementing the above tables, other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, etc.

[0189] The predefinition in the present disclosure can be understood as defining, predefining, storing, pre-storing, pre-negotiating, pre-configuring, solidifying, or pre-burning.

[0190] FIG. 1 is a schematic diagram of an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1, the communication system 100 can include a terminal, a network device. Optionally, the network device described above can include at least one of an access network device, a core network device.

[0191] In some embodiments, the terminal includes at least one of a mobile phone, a user equipment (UE), a wearable device, an Internet of Things (IoT) device, a narrowband IoT (NB-IoT) device, a communication-capable automobile, a smart automobile, a Pad, a computer with a wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, a wireless terminal device in a smart home, and the like, but is not limited thereto.

[0192] In some embodiments, the access network device is at least one of a node or a device that accesses a terminal to a wireless network, and can include an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an Open RAN, a Cloud RAN, a base station in other communication systems, an access node in a wireless fidelity (WiFi) system, and the like, but is not limited thereto.

[0193] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0194] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), where the CU can also be referred to as a control unit. The CU-DU structure can split the protocol layers of the access network device, with some protocol layer functions being controlled by the CU, and the remaining or all protocol layer functions being distributed in the DU and controlled by the CU, but not limited thereto.

[0195] In some embodiments, the core network device can be one device including one or more network elements, or can be multiple devices or device groups including all or part of one or more network elements. The network element can be virtual or physical. The core network includes at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next-generation core (NGC), for example. Alternatively, the core network device can also be a location management function network element. Exemplarily, the location management function network element includes a location server, which can be implemented as any one of the following: a location management function (LMF), an enhanced serving mobile location center (E-SMLC), a secure user plane location (SUPL), and a SUPL location platform (SUPL LP).

[0196] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed in the embodiments of the present disclosure. It can be known by those skilled in the art that, as the system architecture evolves and new business scenarios appear, the technical solutions proposed in the embodiments of the present disclosure are also applicable to similar technical problems.

[0197] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1, or part of the main bodies, but are not limited thereto. The main bodies shown in FIG. 1 are illustrative, and the communication system can include all or part of the main bodies in FIG. 1, or other main bodies other than those in FIG. 1. The number and form of each main body is arbitrary, and the connection relationship between the main bodies is illustrative. The main bodies can be connected or not connected, and the connection can be in any manner, can be direct or indirect, and can be wired or wireless.

[0198] Embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (Bluetooth (registered trademark)), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine to Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), system using other communication methods, next-generation system expanded based thereon, and the like. In addition, a plurality of systems can be combined (for example, combination of LTE or LTE-A and 5G, and the like).

[0199] FIG. 2A is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2A, the embodiment of the present disclosure relates to a communication method for a communication system 100, the above-mentioned method comprising:

[0200] Step 2101, the terminal sends first information to the network device.

[0201] Optionally, the first information can be used to indicate at least one DMRS pattern, for example, the first information can be used to indicate at least one DMRS pattern recommended by the terminal. Optionally, the DMRS pattern can be used to determine the time-frequency resource of the DMRS, optionally, the time-frequency resource can include time domain resource and / or frequency domain resource; in some embodiments, the frequency domain resource of the DMRS can include at least one of the following:

[0202] The number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs);

[0203] The location of the REs (or subcarriers) occupied by each DMRS port in every N RBs. Wherein, N is a positive integer, and N is less than or equal to the total number of RBs occupied by the frequency domain resource of the DMRS.

[0204] Optionally, in some embodiments, the at least one DMRS pattern can include at least one of the following: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern can satisfy at least one of the following:

[0205] The number of DMRS ports supported by the first DMRS pattern is greater than the number of DMRS ports supported by the second DMRS pattern;

[0206] The time domain resource occupied by the first DMRS pattern is less than the time domain resource occupied by the second DMRS pattern;

[0207] The frequency domain resource occupied by the first DMRS pattern is non-uniformly distributed in the bandwidth, and the frequency domain resource occupied by the second DMRS pattern is uniformly distributed in the bandwidth.

[0208] Optionally, the above-mentioned "uniform distribution" can mean that the number and location of REs occupied by the same DMRS port in every H RBs are the same, and the above-mentioned "non-uniform distribution" can mean that the number and / or location of REs occupied by the same DMRS port in every H RBs are not the same. Optionally, H can be a positive integer, for example, H can be 1.

[0209] Optionally, in some embodiments, the number of symbols occupied by the first DMRS pattern can be an integer greater than or equal to 0. Optionally, when the number of symbols occupied by the first DMRS pattern is 0, it means that the DMRS occupies the same symbols as the first signal and / or the first channel, or it means that the DMRS does not exist. Optionally, the first signal can be a signal other than the DMRS, and the first channel can be a channel for transmitting the signal other than the DMRS. For example, the first signal can include at least one of the following: a synchronization signal block (SSB), a channel-state information reference signal (CSI-RS). For example, the first channel can include at least one of the following: a physical broadcast channel (PBCH), a physical downlink control channel (PDCCH), a physical downlink shared channel (PDSCH), a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH).

[0210] Optionally, in some embodiments, in the first DMRS pattern, the number of REs occupied by each DMRS port in each RB is less than 1.

[0211] Optionally, in some embodiments, when the terminal channel condition is good, the first information sent by the terminal can be used to determine the first DMRS pattern, and when the terminal channel condition is poor, the first information sent by the terminal can be used to determine the second DMRS pattern. Optionally, when the terminal channel condition is good, it means that the accuracy of the current channel estimation will be high, at this time, the terminal can recommend the network device to select the first DMRS pattern which occupies less resources, so as to further save the signaling overhead on the basis of ensuring the accuracy of channel estimation. When the terminal channel condition is poor, it means that the accuracy of the current channel estimation will be low, at this time, the terminal can recommend the network device to select the second DMRS pattern which occupies more resources, so as to ensure the accuracy of channel estimation.

[0212] Alternatively, in yet some embodiments, when the terminal performs channel estimation based on Artificial Intelligent (AI), the first information sent by the terminal can be used to determine the first DMRS pattern; when the terminal does not perform channel estimation based on AI, the first information sent by the terminal can be used to determine the second DMRS pattern. Wherein, the "channel estimation based on AI" can be, for example, inputting the measurement result of the DMRS into an AI model to directly output the channel estimation result by the AI model. Wherein, with the help of AI-based channel estimation, the terminal can achieve higher DMRS channel estimation accuracy with less RE occupied by the DMRS. Therefore, when the terminal performs channel estimation based on AI, the terminal can recommend the network device to select the first DMRS pattern occupying less resources, so as to further save the signaling overhead on the basis of ensuring the accuracy of channel estimation. When the terminal does not perform channel estimation based on AI, the terminal can recommend the network device to select the second DMRS pattern occupying more resources, so as to ensure the accuracy of channel estimation.

[0213] The following will introduce the patterns of the first DMRS pattern and the second DMRS pattern in detail.

[0214] Optionally, the first DMRS pattern and the second DMRS pattern can each include two types of DMRS patterns, which can be divided into two types based on the different supported number of code division multiplexing groups (CDM groups), and the two types can include etype 1 and etype 2.

[0215] In some embodiments, the etype 1 in the first DMRS pattern can occupy a single symbol and can support 2 CDM groups; each CDM group includes 8xM DMRS ports; M is a positive integer. Optionally, the etype 1 in the first DMRS pattern corresponding to each terminal can occupy 4xM RBs, and in the 4xM RBs, the DMRS ports in each CDM group are repeated mapped 3 times. And the starting position of the first RB in the RB corresponding to the etype 1 in the first DMRS pattern and the point A are separated by 4xMxF RBs; F is a non-negative integer.

[0216] For example, FIG. 2B is a structure diagram of etype 1 in the first DMRS pattern when M = 1, according to an embodiment of the present disclosure. One block in FIG. 2B represents one RE or one subcarrier, and 12 REs in the vertical direction represent one RB. As shown in FIG. 2B, when M = 1, etype 1 in the first DMRS pattern can occupy a single symbol, support two CDM groups, CDM group #1 and CDM group #2. Assuming that the DMRS port numbers supported by etype 1 in the first DMRS pattern are 0-15, the 8 DMRS ports supported by CDM group #1 are DMRS ports 0, 1, 4, 5, 8, 9, 12, and 13, and the 8 DMRS ports supported by CDM group #2 are DMRS ports 2, 3, 6, 7, 10, 11, 14, and 15. Alternatively, CDM group #1 can occupy the 1st, 3rd, 5th, 7th, 9th, and 11th REs of the first RB and the 1st and 3rd REs of the second RB, and the DMRS signals of the 8 DMRS ports in CDM group #1 can be multiplexed and sent by using an FD OCC code with a length of 8. In addition, CDM group #2 can occupy the 2nd, 4th, 6th, 8th, 10th, and 12th REs of the first RB and the 2nd and 4th REs of the second RB, and the DMRS signals of the 8 DMRS ports in CDM group #2 can be multiplexed and sent by using an FD OCC code with a length of 8.

[0217] Alternatively, in an embodiment of the present disclosure, when M = 1, etype 1 in the first DMRS pattern can occupy at least 4 RBs, and the DMRS ports in each CDM group are repeatedly mapped 3 times in every 4 RBs.

[0218] Alternatively, when the 8 DMRS ports in CDM group #1 are mapped for the first time, they can be mapped to the 1st, 3rd, 5th, 7th, 9th, and 11th REs of the first RB and the 1st and 3rd REs of the second RB; when the 8 DMRS ports in CDM group #1 are mapped for the second time, they can be mapped to the 5th, 7th, 9th, and 11th REs of the second RB and the 1st, 3rd, 5th, and 7th REs of the third RB; and when the 8 DMRS ports in CDM group #1 are mapped for the third time, they can be mapped to the 9th and 11th REs of the third RB and the 1st, 3rd, 5th, 7th, 9th, and 11th REs of the fourth RB. The same DMRS sequence is used for the three mappings of CDM group #1.

[0219] Optionally, when the 8 DMRS ports in the CDM group#2 are mapped for the first time, they can be mapped to the 2nd, 4th, 6th, 8th, 10th, 12th REs of the first RB, and the 2nd, 4th REs of the second RB; when the 8 DMRS ports in the CDM group#2 are mapped for the second time, they can be mapped to the 6th, 8th, 10th, 12th REs of the second RB, and the 2nd, 4th, 6th, 8th REs of the third RB; when the 8 DMRS ports in the CDM group#2 are mapped for the third time, they can be mapped to the 10th, 12th REs of the third RB, and the 2nd, 4th, 6th, 8th, 10th, 12th REs of the fourth RB. Wherein, the same DMRS sequence is used for the three times of mapping of the CDM group#2.

[0220] Therefore, according to the above content, for the etype 1 occupying a single symbol in the first DMRS pattern, the 8 DMRS ports in the 4 RBs occupy 24 REs in total, and therefore, one DMRS port occupies 3 REs in 4 RBs on average, and each DMRS port occupies 0.75 RE in each RB on average.

[0221] In some embodiments, the etype 1 in the first DMRS pattern can occupy double symbols, and can support 2 CDM groups; each CDM group includes 16×M DMRS ports; M is a positive integer. Optionally, the etype 1 in the first DMRS pattern corresponding to each terminal can occupy 4×M RBs, and in the 4×M RBs, the DMRS ports in each CDM group are repeated mapped for 3 times. And, the starting position of the first RB in the RB corresponding to the etype 1 in the first DMRS pattern is spaced 4×M×F RBs from the point A; F is a non-negative integer.

[0222] For example, FIG. 2C is a structure diagram of etype 1 in the first DMRS pattern when M = 1 according to an embodiment of the present disclosure. As shown in FIG. 2C, when M = 1, etype 1 in the first DMRS pattern can occupy two symbols, support two CDM groups, CDM group #1 and CDM group #2, respectively. Assuming that the DMRS port numbers supported by etype 1 in the first DMRS pattern are 0-31, the 16 DMRS ports supported by CDM group #1 are: DMRS ports 0, 1, 4, 5, 8, 9, 12, 13, 16, 17, 20, 21, 24, 25, 28, 29; and the 16 DMRS ports supported by CDM group #2 are: DMRS ports 2, 3, 6, 7, 10, 11, 14, 15, 18, 19, 22, 23, 26, 27, 30, 31. Optionally, CDM group #1 can occupy the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers of the first RB of the two symbols respectively, and the 1st, 3rd subcarriers of the second RB of the two symbols respectively, and the DMRS signals of the 16 DMRS ports in CDM group #1 can be multiplexed and sent by using an FD OCC code with a length of 8. CDM group #2 can occupy the 2nd, 4th, 6th, 8th, 10th, 12th subcarriers of the first RB of the two symbols respectively, and the 2nd, 4th subcarriers of the second RB of the two symbols respectively, and the DMRS signals of the 16 DMRS ports in CDM group #2 can be multiplexed and sent by using an FD OCC code with a length of 8.

[0223] Optionally, in an embodiment of the present disclosure, when M = 1, etype 1 in the first DMRS pattern can occupy at least 4 RBs, and the DMRS ports in each CDM group are repeated and mapped 3 times in every 4 RBs.

[0224] Optionally, the 16 DMRS ports in the CDM group #1 can be mapped onto the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers of the first RB of the two symbols and the 1st, 3rd subcarriers of the second RB of the two symbols in the first mapping; the 16 DMRS ports in the CDM group #1 can be mapped onto the 5th, 7th, 9th, 11th subcarriers of the second RB of the two symbols and the 1st, 3rd, 5th subcarriers of the third RB of the two symbols in the second mapping; the 16 DMRS ports in the CDM group #1 can be mapped onto the 9th, 11th subcarriers of the third RB of the two symbols and the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers of the fourth RB of the two symbols in the third mapping. The same DMRS sequence is used in the three mappings of the CDM group #1.

[0225] Optionally, the 16 DMRS ports in the CDM group #2 can be mapped onto the 2nd, 4th, 6th, 8th, 10th, 12th subcarriers of the first RB of the two symbols and the 2nd, 4th subcarriers of the second RB of the two symbols in the first mapping; the 16 DMRS ports in the CDM group #2 can be mapped onto the 6th, 8th, 10th, 12th subcarriers of the second RB of the two symbols and the 2nd, 4th, 6th, 8th subcarriers of the third RB of the two symbols in the second mapping; the 16 DMRS ports in the CDM group #2 can be mapped onto the 10th, 12th subcarriers of the third RB of the two symbols and the 2nd, 4th, 6th, 8th, 10th, 12th subcarriers of the fourth RB of the two symbols in the third mapping. The same DMRS sequence is used in the three mappings of the CDM group #2.

[0226] Therefore, according to the above description, for the etype 1 occupying two symbols in the first DMRS pattern, the 16 DMRS ports in the 4 RBs occupy 48 REs in total, and one DMRS port occupies 3 REs in an average in the 4 RBs, and each DMRS port occupies 0.75 RE in an average in each RB.

[0227] In some embodiments, the etype 2 in the first DMRS pattern can occupy a single symbol, support 3 CDM groups, each CDM group includes 8 x A DMRS ports, and A is a positive integer. Optionally, the etype 2 in the first DMRS pattern corresponding to each terminal can occupy 2 x A RBs, in which the DMRS ports in each CDM group are mapped once. In addition, the starting position of the first RB in the RB corresponding to the etype 2 in the first DMRS pattern and the point A are separated by 2 x A x C RBs, and C is a non-negative integer.

[0228] For example, FIG. 2D is a structural diagram of the etype 2 in the first DMRS pattern when A = 1 according to an embodiment of the present disclosure. As shown in FIG. 2D, when A = 1, the etype 2 in the first DMRS pattern can occupy a single symbol, occupy at least 2 RBs, and support three CDM groups, namely CDM group #1, CDM group #2, and CDM group #3. Assuming that the DMRS port numbers supported by the etype 2 in the first DMRS pattern are 0-23, the 8 DMRS ports (Ports) supported by the CDM group #1 are DMRS ports 0, 1, 6, 7, 12, 13, 18, and 19; the 8 DMRS ports (Ports) supported by the CDM group #2 are DMRS ports 2, 3, 8, 9, 14, 15, 20, and 21; and the 8 DMRS ports (Ports) supported by the CDM group #3 are DMRS ports 4, 5, 10, 11, 16, 17, 22, and 23. Optionally, the CDM group #1 can occupy the 1st, 2nd, 7th, and 8th REs of the first and second RBs, and can use an FD OCC code with a length of 8 to multiplex and send the DMRS signals of the 8 DMRS ports in the CDM group #1. The CDM group #2 can occupy the 3rd, 4th, 9th, and 10th REs of the first and second RBs, and can use an FD OCC code with a length of 8 to multiplex and send the DMRS signals of the 8 DMRS ports in the CDM group #2. The CDM group #3 can occupy the 5th, 6th, 11th, and 12th REs of the first and second RBs, and can use an FD OCC code with a length of 8 to multiplex and send the DMRS signals of the 8 DMRS ports in the CDM group #3.

[0229] Therefore, for the etype 2 occupying a single symbol in the first DMRS pattern, 8 DMRS ports in 2 RBs occupy 8 REs in total, and one DMRS port occupies 1 RE in 2 RBs on average, and each DMRS port occupies 0.5 RE in each RB on average.

[0230] In some embodiments, the etype 2 in the first DMRS pattern can occupy double symbols, and can support 3 CDM groups; each CDM group includes 16 x A DMRS ports; A is a positive integer. Alternatively, the etype 2 in the first DMRS pattern corresponding to each terminal can occupy 2 x A RBs, and in the 2 x A RBs, the DMRS ports in each CDM group are mapped once. In addition, the starting position of the first RB in the RB corresponding to the etype 2 in the first DMRS pattern and the point A are separated by 2 x A x C RBs; C is a non-negative integer.

[0231] For example, FIG. 2E is a structure diagram of etype 2 in the first DMRS pattern when M = 1, according to an embodiment of the present disclosure. As shown in FIG. 2E, when A = 1, etype 2 in the first DMRS pattern can occupy two symbols, occupy at least 2 RBs, support three CDM groups, namely CDM group #1, CDM group #2, and CDM group #3, wherein it is assumed that etype 2 in the first DMRS pattern supports DMRS port numbers 0-47, 16 DMRS ports (Ports) supported by CDM group #1 are: DMRS ports 0, 1, 6, 7, 12, 13, 18, 19, 24, 26, 30, 31, 36, 37, 42, 43; 16 DMRS ports (Ports) supported by CDM group #2 are: DMRS ports 2, 3, 8, 9, 14, 15, 20, 21, 26, 27, 32, 33, 38, 39, 44, 45; and 16 DMRS ports (Ports) supported by CDM group #3 are: DMRS ports 4, 5, 10, 11, 16, 17, 22, 23, 28, 29, 34, 35, 40, 41, 46, 47. Optionally, CDM group #1 can occupy the 1st, 2nd, 7th, and 8th subcarriers of the first RB and the second RB on the two symbols respectively, and a length-8 FD OCC code can be used to multiplex and send DMRS signals of the 16 DMRS ports in CDM group #1. CDM group #2 can occupy the 3rd, 4th, 9th, and 10th subcarriers of the first RB and the second RB on the two symbols respectively, and a length-8 FD OCC code can be used to multiplex and send DMRS signals of the 16 DMRS ports in CDM group #2. CDM group #3 can occupy the 5th, 6th, 11th, and 12th subcarriers of the first RB and the second RB on the two symbols respectively, and a length-8 FD OCC code can be used to multiplex and send DMRS signals of the 16 DMRS ports in CDM group #3.

[0232] Therefore, in view of the above, for etype 2 in the first DMRS pattern occupying two symbols, 16 DMRS ports in 2 RBs occupy 16 subcarriers in total, and therefore one DMRS port occupies 1 subcarrier in 2 RBs on average, and each DMRS port occupies 0.5 RE in each RB on average.

[0233] Optionally, etype 1 in the second DMRS pattern can occupy a single symbol, and can support 2 CDM groups; each CDM group includes 4 DMRS ports.

[0234] For example, FIG. 2F is a structural diagram of etype 1 in the second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2F, etype 1 in the second DMRS pattern can occupy a single symbol, support two CDM groups, CDM group #1 and CDM group #2. Assuming that etype 1 in the second DMRS pattern supports DMRS port numbers 0-8, CDM group #1 supports four DMRS ports (Ports) DMRS port 0, 1, 4, 5, and CDM group #2 supports four DMRS ports (Ports) DMRS port 2, 3, 6, 7. Optionally, CDM group #1 can occupy the first, third, fifth, and seventh REs of the first RB, and a length-4 FD OCC code can be used to multiplex and send DMRS signals of the four DMRS ports in CDM group #1. In addition, CDM group #2 can occupy the second, fourth, sixth, and eighth REs of the first RB, and a length-4 FD OCC code can be used to multiplex and send DMRS signals of the four DMRS ports in CDM group #2.

[0235] Optionally, in an embodiment of the present disclosure, etype 1 in the second DMRS pattern can occupy at least two RBs, and the DMRS ports in each CDM group are repeatedly mapped three times in every two RBs.

[0236] Optionally, when the four DMRS ports in CDM group #1 are mapped for the first time, they can be mapped to the first, third, fifth, and seventh REs of the first RB; when the four DMRS ports in CDM group #1 are mapped for the second time, they can be mapped to the ninth and eleventh REs of the first RB and to the first and third REs of the second RB; and when the four DMRS ports in CDM group #1 are mapped for the third time, they can be mapped to the fifth, seventh, ninth, and eleventh REs of the second RB. The three mappings of CDM group #1 all use the same DMRS sequence.

[0237] Optionally, when the 4 DMRS ports in the CDM group#2 are mapped for the first time, they can be mapped to the 2nd, 4th, 6th, 8th REs of the first RB; when the 4 DMRS ports in the CDM group#2 are mapped for the second time, they can be mapped to the 11th, 12th REs of the first RB and the 2nd, 4th REs of the second RB; when the 4 DMRS ports in the CDM group#2 are mapped for the third time, they can be mapped to the 6th, 8th, 10th, 12th REs of the second RB. Wherein, the same DMRS sequence is used for the three mappings of the CDM group#2.

[0238] Therefore, in view of the above, for the etype 1 occupying a single symbol in the second DMRS pattern, the 4 DMRS ports in the 2 RBs occupy a total of 12 REs, and thus a DMRS port occupies an average of 3 REs in the 2 RBs, and each DMRS port occupies an average of 1.5 REs in each RB.

[0239] In some embodiments, the etype 1 in the second DMRS pattern can occupy a double symbol and can support 2 CDM groups; each CDM group includes 8 DMRS ports.

[0240] For example, FIG. 2G is a structural schematic diagram of the etype 1 in the second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2G, the etype 1 in the second DMRS pattern can occupy a double symbol and support two CDM groups, namely CDM group#1 and CDM group#2. Assuming that the etype 1 in the second DMRS pattern supports DMRS port numbers 0-15, the 8 DMRS ports (Port) supported by the CDM group#1 are: DMRS ports 0, 1, 4, 5, 8, 9, 12, 13; and the 8 DMRS ports (Port) supported by the CDM group#2 are: DMRS ports 2, 3, 6, 7, 10, 11, 14, 15. Optionally, the CDM group#1 can occupy the 1st, 3rd, 5th, 7th subcarriers of the first RB of the two symbols respectively, and can use a length-4 FD OCC code to multiplex and send the DMRS signals of the 8 DMRS ports in the CDM group#1. And the CDM group#2 can occupy the 2nd, 4th, 6th, 8th subcarriers of the first RB of the two symbols respectively, and can use a length-4 FD OCC code to multiplex and send the DMRS signals of the 8 DMRS ports in the CDM group#2.

[0241] Optionally, in the embodiments of the present disclosure, the etype 1 in the second DMRS pattern can occupy at least 2 RBs, and the DMRS ports in each CDM group are repeatedly mapped 3 times in every 2 RBs.

[0242] Optionally, when the 8 DMRS ports in the CDM group #1 are mapped for the first time, the 8 DMRS ports can be mapped to the 1st, 3rd, 5th, and 7th subcarriers of the first RB of two symbols; when the 8 DMRS ports in the CDM group #1 are mapped for the second time, the 8 DMRS ports can be mapped to the 9th and 11th subcarriers of the first RB of two symbols, and to the 1st and 3rd subcarriers of the second RB of two symbols; when the 8 DMRS ports in the CDM group #1 are mapped for the third time, the 8 DMRS ports can be mapped to the 5th, 7th, 9th, and 11th subcarriers of the second RB of two symbols. The three mappings of the CDM group #1 all use the same DMRS sequence.

[0243] Optionally, when the 8 DMRS ports in the CDM group #2 are mapped for the first time, the 8 DMRS ports can be mapped to the 2nd, 4th, 6th, and 8th subcarriers of the first RB of two symbols; when the 8 DMRS ports in the CDM group #2 are mapped for the second time, the 8 DMRS ports can be mapped to the 11th and 12th subcarriers of the first RB of two symbols, and to the 2nd and 4th subcarriers of the second RB of two symbols; when the 8 DMRS ports in the CDM group #2 are mapped for the third time, the 8 DMRS ports can be mapped to the 6th, 8th, 10th, and 12th subcarriers of the second RB of two symbols. The three mappings of the CDM group #2 all use the same DMRS sequence.

[0244] Therefore, according to the above content, for the etype 1 occupying double symbols in the second DMRS pattern, the 8 DMRS ports in the 2 RBs occupy a total of 24 REs, and therefore one DMRS port occupies an average of 3 REs in the 2 RBs, and each DMRS port occupies an average of 1.5 REs in each RB.

[0245] In some embodiments, the etype 2 in the second DMRS pattern can occupy a single symbol and can occupy at least 1 RB, and supports 3 CDM groups; each CDM group includes 4 DMRS ports.

[0246] For example, FIG. 2H is a structural diagram of etype 2 in the second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2H, etype 2 in the second DMRS pattern can occupy a single symbol, support three CDM groups, namely CDM group #1, CDM group #2, and CDM group #3. Assuming that the DMRS port numbers supported by etype 2 in the second DMRS pattern are 0-11, the four DMRS ports (Ports) supported by CDM group #1 are DMRS ports 0, 1, 6, and 7; the four DMRS ports (Ports) supported by CDM group #2 are DMRS ports 2, 3, 8, and 9; and the four DMRS ports (Ports) supported by CDM group #3 are DMRS ports 4, 5, 10, and 11. Optionally, CDM group #1 can occupy the first, second, seventh, and eighth REs of the first RB, and a length-4 FD OCC code can be used to multiplex and send the DMRS signals of the four DMRS ports in CDM group #1. CDM group #2 can occupy the third, fourth, ninth, and tenth REs of the first RB, and a length-4 FD OCC code can be used to multiplex and send the DMRS signals of the four DMRS ports in CDM group #2. CDM group #3 can occupy the fifth, sixth, eleventh, and twelfth REs of the first RB, and a length-4 FD OCC code can be used to multiplex and send the DMRS signals of the four DMRS ports in CDM group #3.

[0247] Therefore, in combination with the above, for etype 2 in the second DMRS pattern occupying a single symbol, the four DMRS ports in one RB occupy a total of four REs, and one DMRS port occupies an average of one RE in one RB, that is, each DMRS port occupies an average of one RE in each RB.

[0248] In some embodiments, etype 2 in the second DMRS pattern can occupy two symbols, can occupy at least one RB, and support three CDM groups, each CDM group including eight DMRS ports.

[0249] For example, FIG. 2I is a structural diagram of etype 2 in the second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2I, etype 2 in the second DMRS pattern supports three CDM groups, namely CDM group #1, CDM group #2, and CDM group #3. Assuming that etype 2 in the second DMRS pattern supports DMRS port numbers 0-23, CDM group #1 supports 8 DMRS ports (Ports) DMRS port 0, 1, 6, 7, 12, 13, 18, and 19; CDM group #2 supports 8 DMRS ports (Ports) DMRS port 2, 3, 8, 9, 14, 15, 20, and 21; and CDM group #3 supports 8 DMRS ports (Ports) DMRS port 4, 5, 10, 11, 16, 17, 22, and 23. Optionally, CDM group #1 can occupy the 1st, 2nd, 7th, and 8th subcarriers of the first RB of two symbols, and can use a length-4 FD OCC code to multiplex and send DMRS signals of the 8 DMRS ports in CDM group #1. CDM group #2 can occupy the 3rd, 4th, 9th, and 10th subcarriers of the first RB of two symbols, and can use a length-4 FD OCC code to multiplex and send DMRS signals of the 8 DMRS ports in CDM group #2. CDM group #3 can occupy the 5th, 6th, 11th, and 12th subcarriers of the first RB of two symbols, and can use a length-4 FD OCC code to multiplex and send DMRS signals of the 8 DMRS ports in CDM group #3.

[0250] Therefore, in combination with the above, for etype 2 in the second DMRS pattern occupying two symbols, 8 DMRS ports in 1 RB occupy 8 subcarriers in total, and 1 DMRS port occupies 1 RE in 1 RB on average, that is, each DMRS port occupies 1 RE in each RB on average.

[0251] In some other embodiments, etype 1 in the second DMRS pattern can occupy one symbol, can occupy at least 1 RB, and supports 2 CDM groups; each CDM group includes 2 DMRS ports.

[0252] For example, FIG. 2J is a structural diagram of etype 1 in a second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2J, etype 1 in the second DMRS pattern can occupy a single symbol, support two CDM groups, CDM group #1 and CDM group #2. Assuming that the DMRS port numbers supported by etype 1 in the second DMRS pattern are 0-3, the two DMRS ports (Ports) supported by CDM group #1 are DMRS port 0 and 1, and the two DMRS ports (Ports) supported by CDM group #2 are DMRS port 2 and 3. Alternatively, CDM group #1 can occupy the 1st, 3rd, 5th, 7th, 9th, and 11th REs of the first RB, and the DMRS signals of the two DMRS ports in CDM group #1 can be multiplexed and sent by using a length-2 FD OCC code. CDM group #2 can occupy the 2nd, 4th, 6th, 8th, 10th, and 12th REs of the first RB, and the DMRS signals of the two DMRS ports in CDM group #2 can be multiplexed and sent by using a length-2 FD OCC code.

[0253] Alternatively, as shown in FIG. 2J, the DMRS ports in each CDM group are repeated and mapped three times in the 1 RB. The two DMRS ports in CDM group #1 are mapped to the 1st and 3rd REs of the first RB for the first time, to the 5th and 7th REs of the first RB for the second time, and to the 9th and 11th REs of the first RB for the third time. The three mappings of CDM group #1 all use the same DMRS sequence. The two DMRS ports in CDM group #2 are mapped to the 2nd and 4th REs of the first RB for the first time, to the 6th and 8th REs of the first RB for the second time, and to the 10th and 12th REs of the first RB for the third time. The three mappings of CDM group #2 all use the same DMRS sequence.

[0254] Therefore, according to the above description, for etype 1 occupying a single symbol in the second DMRS pattern shown in FIG. 2J, the two DMRS ports in the 1 RB occupy a total of 6 REs, and one DMRS port occupies an average of 3 REs in the 1 RB, i.e., each DMRS port occupies an average of 3 REs in each RB.

[0255] In some embodiments, the etype 1 in the second DMRS pattern can occupy two symbols, can occupy at least 1 RB, support 2 CDM groups, and each CDM group includes 4 DMRS ports.

[0256] For example, FIG. 2K is a structural diagram of the etype 1 in the second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2K, the etype 1 in the second DMRS pattern can occupy two symbols, support two CDM groups, CDM group #1 and CDM group #2. Assuming that the DMRS port number supported by the etype 1 in the second DMRS pattern is 0-7, the 4 DMRS ports supported by the CDM group #1 are DMRS ports 0, 1, 4, 5, and the 4 DMRS ports supported by the CDM group #2 are DMRS ports 2, 3, 6, 7. Alternatively, the CDM group #1 can occupy the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers of the first RB of two symbols, and the DMRS signals of the 4 DMRS ports in the CDM group #1 can be multiplexed and transmitted by using the FD OCC code with a length of 2. The CDM group #2 can occupy the 2nd, 4th, 6th, 8th, 10th, 12th subcarriers of the first RB of two symbols, and the DMRS signals of the 4 DMRS ports in the CDM group #2 can be multiplexed and transmitted by using the FD OCC code with a length of 2.

[0257] Optionally, as shown in FIG. 2K, the DMRS ports in each CDM group are repeatedly mapped 3 times in the 1 RB. When the 4 DMRS ports in CDM group #1 are mapped for the first time, they can be mapped to the 1st and 3rd subcarriers of the first RB of two symbols; when the 4 DMRS ports in CDM group #1 are mapped for the second time, they can be mapped to the 5th and 7th subcarriers of the first RB of two symbols; when the 4 DMRS ports in CDM group #1 are mapped for the third time, they can be mapped to the 9th and 11th subcarriers of the first RB of two symbols. Among them, the same DMRS sequence is used for the three mappings of CDM group #1. Optionally, when the 4 DMRS ports in CDM group #2 are mapped for the first time, they can be mapped to the 2nd and 4th subcarriers of the first RB of two symbols; when the 4 DMRS ports in CDM group #2 are mapped for the second time, they can be mapped to the 6th and 8th subcarriers of the first RB of two symbols; when the 4 DMRS ports in CDM group #2 are mapped for the third time, they can be mapped to the 10th and 12th subcarriers of the first RB of two symbols. Among them, the same DMRS sequence is used for the three mappings of CDM group #2.

[0258] Therefore, in view of the above, for the etype 1 occupying double symbols in the second DMRS pattern shown in FIG. 2K, the 4 DMRS ports in the 1 RB occupy a total of 12 subcarriers, and one DMRS port occupies an average of 3 subcarriers in the 1 RB, i.e., each DMRS port occupies an average of 3 REs in each RB.

[0259] In some embodiments, the etype 2 in the second DMRS pattern can occupy a single symbol, can occupy at least 1 RB, and supports 3 CDM groups; each CDM group includes 2 DMRS ports.

[0260] For example, FIG. 2L is a structural diagram of etype 2 in a second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2L, etype 2 in the second DMRS pattern occupies a single symbol, supports 3 CDM groups, namely CDM group #1, CDM group #2, and CDM group #3. Assuming that the DMRS port numbers supported by etype 2 in the second DMRS pattern are 0-5, the 2 DMRS ports supported by CDM group #1 are DMRS ports 0 and 1, the 2 DMRS ports supported by CDM group #2 are DMRS ports 2 and 3, and the 2 DMRS ports supported by CDM group #3 are DMRS ports 4 and 5. Optionally, CDM group #1 can occupy the 1st, 2nd, 7th and 8th REs of the first RB, and a length-2 FD OCC code can be used to multiplex and send the DMRS signals of the 2 DMRS ports in CDM group #1. CDM group #2 can occupy the 3rd, 4th, 9th and 10th REs of the first RB, and a length-2 FD OCC code can be used to multiplex and send the DMRS signals of the 2 DMRS ports in CDM group #2. CDM group #3 can occupy the 5th, 6th, 11th and 12th REs of the first RB, and a length-2 FD OCC code can be used to multiplex and send the DMRS signals of the 2 DMRS ports in CDM group #3.

[0261] Optionally, as shown in FIG. 2L, the DMRS ports in each CDM group are repeated mapped twice in the 1 RB. The 2 DMRS ports in CDM group #1 are mapped to the 1st and 2nd REs of the 1st RB in the first time, and are mapped to the 7th and 8th REs of the 1st RB in the second time. The 2 mapping of CDM group #1 uses the same DMRS sequence. Optionally, the 2 DMRS ports in CDM group #2 are mapped to the 3rd and 4th REs of the 1st RB in the first time, and are mapped to the 9th and 10th REs of the 1st RB in the second time; the 2 mapping of CDM group #2 uses the same DMRS sequence. Optionally, the 2 DMRS ports in CDM group #3 are mapped to the 5th and 6th REs of the 1st RB in the first time, and are mapped to the 11th and 12th REs of the 1st RB in the second time; the 2 mapping of CDM group #3 uses the same DMRS sequence.

[0262] Therefore, according to the above description, for the etype 2 occupying a single symbol in the second DMRS pattern shown in FIG. 2L, the 2 DMRS ports in the 1 RB occupy 4 REs in total, and one DMRS port occupies 2 REs in the 1 RB on average, i.e., each DMRS port occupies 2 REs in each RB on average.

[0263] In some other embodiments, the etype 2 in the second DMRS pattern can occupy a double symbol, can occupy at least 1 RB, and supports 3 CDM groups; each CDM group includes 4 DMRS ports.

[0264] For example, FIG. 2M is a structural diagram of etype 2 in a second DMRS pattern according to an embodiment of the present disclosure. As shown in FIG. 2M, etype 2 in the second DMRS pattern can occupy two symbols, and support 3 CDM groups, CDM group #1, CDM group #2, and CDM group #3. Assuming that the DMRS port numbers supported by etype 2 in the second DMRS pattern are 0-11, the 4 DMRS ports supported by CDM group #1 are DMRS ports 0, 1, 6, and 7; the 4 DMRS ports supported by CDM group #2 are DMRS ports 2, 3, 8, and 9; and the 4 DMRS ports supported by CDM group #3 are DMRS ports 4, 5, 10, and 11. Optionally, CDM group #1 can occupy the 1st, 2nd, 7th, and 8th subcarriers of the first RB of two symbols, and a length-2 FD OCC code can be used to multiplex and send DMRS signals of the 4 DMRS ports in CDM group #1. CDM group #2 can occupy the 3rd, 4th, 9th, and 10th subcarriers of the first RB of two symbols, and a length-2 FD OCC code can be used to multiplex and send DMRS signals of the 4 DMRS ports in CDM group #2. CDM group #3 can occupy the 5th, 6th, 11th, and 12th subcarriers of the first RB of two symbols, and a length-2 FD OCC code can be used to multiplex and send DMRS signals of the 4 DMRS ports in CDM group #3.

[0265] Optionally, as shown in FIG. 2M, the DMRS ports in each CDM group are repeated twice in the 1 RB. When the 4 DMRS ports in CDM group #1 are mapped for the first time, they can be mapped to the 1st and 2nd subcarriers of the first RB in the first two symbols; when the 4 DMRS ports in CDM group #1 are mapped for the second time, they can be mapped to the 7th and 8th subcarriers of the first RB in the first two symbols. The two mappings of CDM group #1 both use the same DMRS sequence. Optionally, when the 4 DMRS ports in CDM group #2 are mapped for the first time, they can be mapped to the 3rd and 4th subcarriers of the first RB in the first two symbols; when the 4 DMRS ports in CDM group #2 are mapped for the second time, they can be mapped to the 9th and 10th subcarriers of the first RB in the first two symbols; the two mappings of CDM group #2 both use the same DMRS sequence. Optionally, when the 4 DMRS ports in CDM group #3 are mapped for the first time, they can be mapped to the 5th and 6th subcarriers of the first RB in the first two symbols; when the 4 DMRS ports in CDM group #3 are mapped for the second time, they can be mapped to the 11th and 12th subcarriers of the first RB in the first two symbols; the two mappings of CDM group #3 both use the same DMRS sequence.

[0266] Therefore, in view of the above, for the etype 2 occupying two symbols in the second DMRS pattern shown in FIG. 2M, the 4 DMRS ports in the 1 RB occupy a total of 8 subcarriers, and one DMRS port occupies an average of 2 subcarriers in the 1 RB, i.e., each DMRS port occupies an average of 2 REs in each RB.

[0267] In step 2102, the terminal sends a terminal capability to the network device.

[0268] Optionally, the terminal can report at least one of the following to the network device:

[0269] At least one first value M supported by the terminal;

[0270] The terminal supports a first function.

[0271] Optionally, the first function can include at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation. In other embodiments, the first function may, for example, also include sending and / or receiving DMRS based on the first DMRS pattern.

[0272] Optionally, in some embodiments, the terminal can support receiving and / or transmitting the first DMRS pattern when the terminal supports AI-based DMRS channel estimation. In some embodiments, the above-mentioned “terminal supporting receiving and / or transmitting the first DMRS pattern, transmitting and / or receiving DMRS based on the first DMRS pattern” can also be referred to as: the terminal supporting AI-based DMRS transmission, the transmission including transmission and / or reception.

[0273] Optionally, the M can be: the number of REs occupied by each DMRS port in each RB on average. In some embodiments, the at least one first value M can include at least one of the following:

[0274] The value of M when the terminal performs AI-based DMRS channel estimation;

[0275] The value of M when the terminal does not perform AI-based DMRS channel estimation.

[0276] Optionally, M can be a value greater than or equal to 0; wherein when M = 0, it means that the DMRS occupies the same REs as the first signal, or it means that the DMRS occupies the same REs as the first channel, or it means that the DMRS does not exist; when M > 0, it means that the DMRS occupies different REs from the first signal, or it means that the DMRS occupies different REs from the first channel. For details of the first signal and the first channel, please refer to the description of step 2101 above.

[0277] Optionally, when M > 0, M may, for example, be less than or equal to 1, such as M = 0.5, at which time it means that each DMRS port occupies one RE in 2 RBs. Alternatively, M can also be greater than 1, for example, M = 1.5, that is: each DMRS port occupies 1.5 REs in each RB on average, such as the pattern shown in FIG. 2G.

[0278] Step 2103, the network device determines a third DMRS pattern.

[0279] Optionally, the third DMRS pattern can be the DMRS pattern actually to be used by the network device. In some embodiments, the network device can determine the third DMRS pattern based on the terminal capability and / or the at least one DMRS pattern indicated by the first information sent by the terminal. The third DMRS pattern can be any one of the at least one DMRS pattern indicated by the first information, or the third DMRS pattern can also not be the DMRS pattern indicated by the first information. In some embodiments, the third DMRS pattern should match the terminal capability and the current channel estimation method of the terminal, and the third DMRS pattern can be used to determine the DMRS time-frequency resource.

[0280] Step 2104, the network device indicates a third DMRS pattern to the terminal.

[0281] Step 2105, the terminal or the network device transmits or receives DMRS based on the third DMRS pattern for channel estimation.

[0282] Optionally, in some embodiments, the terminal can receive DMRS transmitted by the network device based on the third DMRS pattern while receiving at least one of PBCH, PDCCH and PDSCH transmitted by the network device, and perform downlink channel estimation based on the received DMRS.

[0283] In other embodiments, the terminal can transmit DMRS based on the third DMRS pattern while transmitting PUCCH and / or PUSCH, so as to enable the network device to perform uplink channel estimation.

[0284] Alternatively, in some embodiments, the network device can transmit DMRS to the terminal based on the third DMRS pattern while transmitting at least one of PBCH, PDCCH and PDSCH, so as to enable the terminal to perform downlink channel estimation.

[0285] In other embodiments, the network device can receive DMRS transmitted by the terminal based on the third DMRS pattern while receiving PUCCH and / or PUSCH transmitted by the terminal, and perform uplink channel estimation based on the received DMRS.

[0286] In the above embodiments, the terminal can transmit first information to the network device, the first information being used to indicate at least one DMRS pattern, and the network device can determine a suitable DMRS pattern for the terminal based on the first information and indicate the DMRS pattern to the terminal, so as to ensure the transmission stability and accuracy of DMRS when the terminal transmits DMRS based on the DMRS pattern indicated by the network device.

[0287] In the above embodiments, the terminal can further report at least one first value M supported by the terminal to the network device, and / or the terminal can further report to the network device that the terminal supports AI-based DMRS channel estimation, so that the network device can accurately determine a suitable DMRS pattern for the terminal based on the report of the terminal and indicate the DMRS pattern to the terminal, to ensure the transmission stability and accuracy of DMRS.

[0288] In the above embodiments, a plurality of DMRS patterns occupying less RE are designed, so that DMRS can be transmitted based on these patterns, reducing signaling overhead and communication cost.

[0289] The communication method related to the embodiments of the present disclosure can include at least one of steps 2101-2105. For example, step 2101 can be implemented as an independent embodiment, step 2102 can be implemented as an independent embodiment, step 2103 can be implemented as an independent embodiment, step 2101+S2102 can be implemented as an independent embodiment, but not limited thereto.

[0290] In the present embodiment or example, each step can be independent, arbitrarily combined or exchanged in order, the optional mode or example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0291] FIG. 3 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3, the embodiments of the present disclosure relate to a communication method for a terminal, and the above method comprises:

[0292] Step 3101, sending first information.

[0293] Optionally, the first information is used to indicate at least one demodulation reference signal (DMRS) pattern.

[0294] Optionally, the DMRS pattern is used to determine the time domain resource and / or frequency domain resource of the DMRS.

[0295] The frequency domain resource of the DMRS includes at least one of:

[0296] The number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs);

[0297] The position of the REs occupied by each DMRS port in every N RBs; wherein N is a positive integer.

[0298] Optionally, the method further comprises:

[0299] Reporting at least one of the following to the network device:

[0300] At least one first value M supported by the terminal, wherein M is the number of REs occupied by each DMRS port in each RB on average.

[0301] The terminal supports a first function, and the first function includes at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0302] Optionally, the M is a value greater than or equal to 0; wherein

[0303] The M = 0, the DMRS occupies the same RE as the first signal, or the DMRS occupies the same RE as the first channel, or the DMRS does not exist;

[0304] The M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0305] The first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0306] Optionally, the at least one first value M includes at least one of the following:

[0307] The value of M when the terminal performs DMRS channel estimation based on AI;

[0308] The value of M when the terminal does not perform DMRS channel estimation based on AI.

[0309] Optionally, the at least one DMRS pattern includes at least one of the following: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of the following:

[0310] The first DMRS pattern supports a number of DMRS ports greater than the number of DMRS ports supported by the second DMRS pattern;

[0311] The first DMRS pattern occupies less time domain resources than the second DMRS pattern;

[0312] The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed in bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed in bandwidth.

[0313] Optionally, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0314] Optionally, in the first DMRS pattern, each DMRS port occupies an average number of REs in each RB, which is less than 1.

[0315] Optionally, the first DMRS pattern occupies a single symbol, supports 2 code division multiplexing (CDM) groups, each CDM group includes 8*M DMRS ports, and M is a positive integer.

[0316] Optionally, the first DMRS pattern occupies two symbols, supports 2 CDM groups, each CDM group includes 16*M DMRS ports, and M is a positive integer.

[0317] Optionally, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 4*M*F RBs, and F is a non-negative positive integer.

[0318] Optionally, the first DMRS pattern occupies a single symbol, supports 3 CDM groups, each CDM group includes 8*A DMRS ports, and A is a positive integer.

[0319] Optionally, the first DMRS pattern occupies two symbols, supports 3 CDM groups, each CDM group includes 16*A DMRS ports, and A is a positive integer.

[0320] Optionally, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 2*A*C RBs, and C is a non-negative integer.

[0321] Details of step 3101 can be found in the above embodiments.

[0322] In the embodiments or examples, each step can be independent, arbitrarily combined or exchanged in order, the optional mode or example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples.

[0323] FIG. 4 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4, the embodiment of the present disclosure relates to a communication method, for a network device, the method comprising:

[0324] Step 4101, receiving first information sent by a terminal.

[0325] Optionally, the first information is used to indicate at least one demodulation reference signal (DMRS) pattern.

[0326] Optionally, the DMRS pattern is used to determine time domain resources and / or frequency domain resources of the DMRS.

[0327] The frequency domain resources of the DMRS include at least one of:

[0328] a number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs);

[0329] a location of REs occupied by each DMRS port in every N RBs; wherein N is a positive integer.

[0330] Optionally, the method further comprises:

[0331] receiving at least one of the following reported by the terminal:

[0332] at least one first value M supported by the terminal, wherein M is a number of REs occupied by each DMRS port in every RB on average;

[0333] the terminal supports a first function, wherein the first function comprises at least one of: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

[0334] Optionally, M is a value greater than or equal to 0; wherein

[0335] M = 0, the DMRS occupies the same REs as the first signal, or the DMRS occupies the same REs as the first channel, or the DMRS does not exist;

[0336] M > 0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; wherein

[0337] the first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

[0338] Optionally, the at least one first value M comprises at least one of:

[0339] a value of M when the terminal performs AI-based DMRS channel estimation;

[0340] a value of M when the terminal does not perform AI-based DMRS channel estimation.

[0341] Optionally, the at least one DMRS pattern comprises at least one of: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of:

[0342] The first DMRS pattern supports a number of DMRS ports greater than a number of DMRS ports supported by the second DMRS pattern.

[0343] The first DMRS pattern occupies time domain resources less than time domain resources occupied by the second DMRS pattern.

[0344] The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed over a bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed over the bandwidth.

[0345] Optionally, the first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

[0346] Optionally, in the first DMRS pattern, each DMRS port occupies an average number of REs in each RB that is less than 1.

[0347] Optionally, the first DMRS pattern occupies a single symbol and supports 2 code division multiplexing (CDM) groups; each CDM group includes 8xM DMRS ports; and M is a positive integer.

[0348] Optionally, the first DMRS pattern occupies two symbols and supports 2 CDM groups; each CDM group includes 16xM DMRS ports; and M is a positive integer.

[0349] Optionally, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 4xMxF RBs; and F is a non-negative positive integer.

[0350] Optionally, the first DMRS pattern occupies a single symbol and supports 3 CDM groups; each CDM group includes 8xA DMRS ports; and A is a positive integer.

[0351] Optionally, the first DMRS pattern occupies two symbols and supports 3 CDM groups; each CDM group includes 16xA DMRS ports; and A is a positive integer.

[0352] Optionally, a starting position of a first RB of the RBs corresponding to the first DMRS pattern and the point A are separated by 2xAxC RBs; and C is a non-negative integer.

[0353] The details of step 4101 can be referred to the above embodiment description.

[0354] In the embodiments or examples, each step can be independent, arbitrarily combined or the order exchanged, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples, without contradiction.

[0355] FIG. 5 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment of the present disclosure relates to a communication method for a communication system including a terminal, a network device, the method including at least one of the following:

[0356] Step 5101, the terminal sends first information to the network device;

[0357] Step 5102, the network device receives the first information sent by the terminal.

[0358] The optional implementation of steps 5101-5102 can refer to the above-mentioned embodiments.

[0359] In some embodiments, the above-mentioned method can include the method described in the above-mentioned embodiments of the communication system side, the terminal side, the network device side, etc., which will not be repeated here.

[0360] The communication method related to the embodiments of the present disclosure can include at least one of steps 5101-5102. For example, step 5101 can be implemented as an independent embodiment, and step 5102 can be implemented as an independent embodiment, but is not limited thereto.

[0361] In the embodiments or examples, each step can be independent, arbitrarily combined or the order exchanged, the optional mode or optional example can be arbitrarily combined, and can be arbitrarily combined with any step of other embodiments or other examples, without contradiction.

[0362] The following is an exemplary introduction to the above-mentioned method.

[0363] In traditional communication transmission, DMRS is used for channel estimation, such as sending PBCH, PDCCH, PDSCH, PUCCH, PUSCH, and DMRS will be sent at the same time. After the terminal receives the DMRS, the DMRS is used for channel estimation, and then the estimated channel is used to receive the data on the corresponding channel.

[0364] To increase the number of DMRS ports, R18 increases the number of DMRS ports of etype 1 to 8 ports in a single symbol and 16 ports in a double symbol, each port occupying 1.5 subcarriers (or REs) in one RB; the number of DMRS ports of etype 2 is increased to 12 ports in a single symbol and 24 ports in a double symbol, each port occupying 1 subcarrier in one RB. Optionally, etype 1 can be as shown in FIGS. 2F and 2G. Etype 2 can be as shown in FIGS. 2H and 2I.

[0365] Before Rel-18, a DMRS port occupies more subcarriers in one RB than in the above-mentioned figures of Rel-18. For example, in etype 1 of FIGS. 2J and 2K, each port occupies 3 subcarriers in one RB. In etype 2 of FIGS. 2L and 2M, each port occupies 2 subcarriers in one RB.

[0366] With the help of AI-based channel estimation, the terminal can achieve high DMRS channel estimation accuracy with fewer REs occupied by DMRS.

[0367] Existing patents have designed DMRS patterns that occupy fewer REs, but the DMRS pattern required by the terminal under different channel conditions can be different. How to determine the most suitable DMRS pattern for the terminal is a problem to be solved.

[0368] The present disclosure proposes a terminal to report a recommended DMRS pattern to reduce the number of REs occupied by DMRS while ensuring channel estimation accuracy.

[0369] I. The terminal reports DMRS pattern information, which is used to inform the network device of frequency domain resource related information and / or time domain related information of DMRS.

[0370] II. Based on I, the frequency domain resource related information of DMRS includes the number and / or position of subcarriers occupied by the terminal in each RB. For a DMRS port, the number of subcarriers occupied by DMRS in each RB is M.

[0371] 1. From the right, based on II, the terminal reports capability information indicating the value of M supported by the terminal. The value of M can be supported by the terminal based on an AI model and / or a non-AI model.

[0372] Further, the terminal also reports capability information indicating support for AI-based DMRS channel estimation

[0373] • M is a value greater than or equal to 0, which can be less than or equal to 1, or greater than 1. Less than 1, such as 0.5, means that each DMRS port occupies only one subcarrier in 2 PRBs. M equal to 0 can mean that the terminal supports DMRS occupying the same RE as the channel, such as PDSCH, instead of DMRS occupying special RE (symbol and subcarrier position).

[0374] Three, the DMRS pattern includes at least one of a plurality of patterns

[0375] 1. Each pattern corresponds to a different value of M or a different number of symbols occupied by DMRS

[0376] • For example, when the channel condition is good, the terminal sends the first pattern, and when the channel condition is poor, the terminal sends the second pattern

[0377] • For example, when the terminal performs channel estimation based on AI, the terminal sends the first pattern; when the terminal fallbacks to traditional non-AI DMRS-based channel estimation, the terminal sends the second pattern

[0378] • Wherein the number of subcarriers occupied by the first pattern is less than the number of subcarriers occupied by the second pattern. The number of symbols occupied by the first pattern is less than the number of symbols occupied by the second pattern, and the number of symbols of the pattern can be 0, indicating that DMRS and PDSCH occupy the same symbol position and subcarrier position.

[0379] 2. Wherein the above FIG. 2F-FIG. 2M is a pattern (i.e., the second pattern), and the following content describes another pattern (i.e., the first pattern) occupying fewer subcarriers in combination with FIG. 2B-FIG. 2E.

[0380] Four, based on three, for etype 1, that is, all DMRS ports are divided into two CDM groups, as shown in the following figure:

[0381] 1. Single-symbol and double-symbol occupy the same subcarrier position.

[0382] 2. For single-symbol.

[0383] • CDM group 1 occupies the 1st, 3rd, 5th, 7th, 9th, 11th subcarriers of the first RB, and the 1st, 3rd subcarriers of the second RB, a total of 8 subcarriers, using length 8 FD OCC code to support 8 ports in CDM group 1; port number as shown in FIG. 2B

[0384] • CDM group 2 occupies the 2, 4, 6, 8, 10, 12 subcarriers of the first RB and the 2, 4 subcarriers of the second RB, a total of 8 subcarriers, using length-8 FD OCC code to support 8 ports within CDM group 2; port numbers are shown in Figure 2B

[0385] • The above gives the case of doubling the number of ports based on the traditional method, and the same principle applies when the number of ports is increased by 4 times, 8 times

[0386] 3. For double symbols

[0387] • CDM group 1 occupies the 1, 3, 5, 7, 9, 11 subcarriers of the first RB and the 1, 3 subcarriers of the second RB, a total of 16 subcarriers, using length-8 FD OCC code to support 16 ports within CDM group 1; port numbers are shown in Figure 2C

[0388] CDM group 2 occupies the 2, 4, 6, 8, 10, 12 subcarriers of the first RB and the 2, 4 subcarriers of the second RB, a total of 16 subcarriers, using length-8 FD OCC code to support 16 ports within CDM group 2; port numbers are shown in Figure 2C.

[0389] Five, based on four, for etype1, it can be seen that two RBs can be used to make up 8 subcarriers as 8 port multiplexing within CDM group. The remaining 8 subcarriers of the two RBs cannot be used if they are allocated in units of 2 RBs.

[0390] 1. Therefore, the present disclosure proposes to allocate DMRS in units of 4 RBs (correspondingly, the RBs occupied by the channel corresponding to the DMRS are also multiples of 4 RBs. When the number of ports is increased by 4 times, the occupied RBs are multiples of 8 RBs……), it can be seen that 4 RBs can make up the subcarriers of three groups of CDM group 1 and three groups of CDM group 2, all CDM group 1 repeatedly sends the same sequence (i.e. each port only occupies 3 REs in 4 RBs), and all CDM group 2 repeatedly sends the same sequence.

[0391] • That is, the first mapping of CDM group 1 occupies the 1, 3, 5, 7, 9, 11 subcarriers of the first RB and the 1, 3 subcarriers of the second RB, a total of 8 subcarriers;

[0392] • The second mapping of CDM group 1 occupies the 5, 7, 9, 11 subcarriers of the second RB and the 1, 3, 5, 7 subcarriers of the third RB, for a total of 8 subcarriers;

[0393] • The third mapping of CDM group 1 occupies the 9, 11 subcarriers of the third RB and the 1, 3, 5, 7, 9, 11 subcarriers of the fourth RB, for a total of 8 subcarriers;

[0394] • Similarly, the mapping number of CDM group 2 is the subcarrier number of CDM group 1 plus 1.

[0395] 2. And to ensure multiplex of DMRS resources among multiple UEs, the DMRS allocation of each UE is in units of 4 PRBs (RB and PRB can be interchanged), and the starting point of the first PRB must be at a position that is a multiple of 4 PRBs relative to point A (common resource block 0) (when the number of ports is increased by 4 times, the starting RB position is a multiple of 8 RBs……)

[0396] Six, based on three, for etype 2, that is, all DMRS ports are divided into three CDM groups, as shown in the following figure:

[0397] 1. The subcarrier positions occupied by single-symbol and double-symbol are the same

[0398] 2. For single-symbol

[0399] • CDM group 1 occupies the 1, 2, 7, 8 subcarriers of the first RB and the second RB, for a total of 8 subcarriers, and uses a length-8 FD OCC code to support 8 ports within CDM group 1; the port numbers are shown in Figure 2D

[0400] • CDM group 2 occupies the 3, 4, 9, 10 subcarriers of the first RB and the second RB, for a total of 8 subcarriers, and uses a length-8 FD OCC code to support 8 ports within CDM group 2; the port numbers are shown in Figure 2D

[0401] • CDM group 3 occupies the 5, 6, 11, 12 subcarriers of the first RB and the second RB, for a total of 8 subcarriers, and uses a length-8 FD OCC code to support 8 ports within CDM group 3; the port numbers are shown in Figure 2D

[0402] •

[0403] • The above is given based on the traditional method of doubling the number of ports, and the same applies when the number of ports is increased by 4 times, 8 times

[0404] 3. For double symbols

[0405] • CDM group 1 occupies the first and second RBs on the first and second symbols, and the first, second, seventh, and eighth subcarriers, for a total of 16 subcarriers, and a length-8 FD OCC code is used to support 16 ports within the CDM group 1; the port numbers are shown in FIG. 2E

[0406] • CDM group 2 occupies the first and second RBs on the first and second symbols, and the third, fourth, ninth, and tenth subcarriers, for a total of 16 subcarriers, and a length-8 FD OCC code is used to support 16 ports within the CDM group 2; the port numbers are shown in FIG. 2E

[0407] • CDM group 3 occupies the first and second RBs on the first and second symbols, and the fifth, sixth, eleventh, and twelfth subcarriers, for a total of 16 subcarriers, and a length-8 FD OCC code is used to support 16 ports within the CDM group 3; the port numbers are shown in FIG. 2E.

[0408] Seven, based on six, for etype2, it can be seen that two RBs are needed to have 8 subcarriers for multiplexing 8 ports within a CDM group. If the traditional allocation of 1 RB is used, it cannot be allocated.

[0409] 1. Therefore, the present disclosure proposes that DMRS allocation be performed in units of 2 RBs (correspondingly, the RBs occupied by the channel corresponding to the DMRS are also multiples of 2 RBs. When the number of ports is increased by 4 times, the occupied RBs are multiples of 4 RBs……), and it can be seen that 2 RBs can have enough subcarriers for a CDM group 1, a CDM group 2, and a CDM group 3, i.e., each port occupies only 1 RE in 2 RBs.

[0410] • The RE position is the same as before

[0411] And in order to ensure multiplexing of DMRS resources between multiple UEs, the DMRS allocation of each UE is in units of 2 PRBs (RBs and PRBs can be interchanged), and the starting point of the first PRB must be a position that is a multiple of 2 PRBs relative to point A (common resource block 0) (when the number of ports is increased by 4 times, the starting RB position is a multiple of 4 RBs……).

[0412] The disclosure proposes a terminal to report a selected DMRS pattern, reduces the number of REs occupied by DMRS, and reduces the signaling overhead of reference signals.

[0413] Embodiments of the disclosure also propose a device for implementing any of the above methods, for example, a device including units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another device is proposed, including units or modules for implementing the steps performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0414] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of them can be integrated into one physical entity or physically separated in actual implementation. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device includes a processor connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of each unit or module of the device, wherein the processor is a general processor such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by designing the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by designing the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules can be implemented in the form of processor calling software, and the remaining part can be implemented in the form of hardware circuit.

[0415] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of a hardware circuit, and the logical relationship of the hardware circuit is fixed or can be reconfigured. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), or the like.

[0416] FIG. 6A is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 6A, the terminal includes:

[0417] The transceiver module is configured to send first information to the network device, where the first information is used to indicate at least one demodulation reference signal (DMRS) pattern.

[0418] Optionally, the transceiver module is configured to perform the steps related to “transceiving” performed by the terminal in any of the above methods. The terminal further includes a processing module, and the processing module is configured to perform the steps related to “processing” performed by the terminal in any of the above methods,

[0419] FIG. 6B is a structural schematic diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 6B, the network device includes:

[0420] The transceiver module is configured to receive first information sent by the terminal, where the first information is used to indicate at least one demodulation reference signal (DMRS) pattern.

[0421] Optionally, the transceiver module is configured to perform the steps related to "transceiving" performed by the network device in any of the above methods. The network device further comprises a processing module configured to perform the steps related to "processing" performed by the network device in any of the above methods.

[0422] FIG. 7A is a structural schematic diagram of a communication device 7100 according to the embodiments of the present disclosure. The communication device 7100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment or the first device described above, etc.), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, which can be referred to the descriptions in the above method embodiments.

[0423] As shown in FIG. 7A, the communication device 7100 comprises one or more processors 7101. The processor 7101 can be a general purpose processor or a special purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process data of the programs. The processor 7101 is configured to invoke instructions to enable the communication device 7100 to perform any of the above methods.

[0424] In some embodiments, the communication device 7100 further comprises one or more memories 7102 configured to store instructions. Optionally, all or part of the memory 7102 can also be located outside the communication device 7100.

[0425] In some embodiments, the communication device 7100 further comprises one or more transceivers 7103. When the communication device 7100 comprises one or more transceivers 7103, the communication steps in the above methods are performed by the transceiver 7103, and other steps are performed by the processor 7101.

[0426] In some embodiments, the transceiver can comprise a receiver and a transmitter, which can be separate or integrated together. Optionally, the terms of transceiver, transceiving unit, transceiver, transceiving circuit, etc. can be replaced by each other, the terms of transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms of receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0427] Optionally, the communication device 7100 further includes one or more interface circuits 7104 connected to the memory 7102, which can be configured to receive and output signals to / from the memory 7102 or other devices. For example, the interface circuit 7104 can read instructions stored in the memory 7102 and transmit the instructions to the processor 7101.

[0428] The communication device 7100 described in the above embodiments can be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 can not be limited by Figure 7a. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally include storage components for storing data, programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) other devices, etc.

[0429] Figure 7B is a structural schematic diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural schematic diagram of the chip 7200 shown in Figure 7B can be referred to, but is not limited thereto.

[0430] The chip 7200 includes one or more processors 7201 configured to invoke instructions to cause the chip 7200 to perform any of the above methods.

[0431] In some embodiments, the chip 7200 further includes one or more interface circuits 7202 connected to the memory 7203, which can be configured to receive and output signals to / from the memory 7203 or other devices. For example, the interface circuit 7202 can read instructions stored in the memory 7203 and transmit the instructions to the processor 7201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver can be replaced by each other.

[0432] In some embodiments, the chip 7200 further includes one or more memories 7203 for storing instructions. Optionally, all or part of the memory 7203 can be outside the chip 7200.

[0433] The disclosure further provides a storage medium having stored instructions which, when executed on the communication device 7100, cause the communication device 7100 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and can be a storage medium readable by other apparatuses. Optionally, the storage medium can be a non-transitory storage medium, but is not limited thereto and can be a transitory storage medium.

[0434] The disclosure further provides a program product which, when executed by the communication device 7100, causes the communication device 7100 to perform any of the methods described above. Optionally, the program product is a computer program product.

[0435] The disclosure further provides a computer program which, when executed on a computer, causes the computer to perform any of the methods described above.

[0436] In the above embodiments, all or some of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or some of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer programs are loaded on a computer and executed, all or some of the processes or functions described in the embodiments of the disclosure are generated. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer programs can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer programs can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media sets. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a high-density digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0437] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are realized in hardware or software manner depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to realize the described functions for each specific application, but such implementation should not be considered beyond the scope of the disclosure.

[0438] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0439] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal, and the method comprises: sending, to a network device, first information, the first information being used for indicating at least one demodulation reference signal (DMRS) pattern.

2. The method of claim 1, wherein, The DMRS pattern is used for determining time domain resources and / or frequency domain resources of the DMRS. The frequency domain resources of the DMRS comprise at least one of the following: a number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs); a position of REs occupied by each DMRS port in every N RBs; wherein N is a positive integer.

3. The method of claim 1 or 2, wherein, The method further comprises: reporting, to the network device, at least one of the following: at least one first value M supported by the terminal, the M being a number of REs occupied by each DMRS port in every RB on average; the terminal supporting a first function, the first function comprising at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

4. The method of claim 3, wherein, The M is a value greater than or equal to 0; wherein the M = 0, the DMRS occupying the same REs as a first signal, or the DMRS occupying the same REs as a first channel, or the DMRS not existing; the M > 0, the DMRS occupying different REs from the first signal, or the DMRS occupying different REs from the first channel; wherein the first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

5. The method of claim 3 or 4, wherein, The at least one first value M comprises at least one of the following: a value of the M when the terminal performs AI-based DMRS channel estimation; a value of the M when the terminal does not perform AI-based DMRS channel estimation.

6. The method of any one of claims 1-5, wherein, The at least one DMRS pattern comprises at least one of the following: a first DMRS pattern and a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of the following: a number of DMRS ports supported by the first DMRS pattern is greater than a number of DMRS ports supported by the second DMRS pattern; time domain resources occupied by the first DMRS pattern are less than time domain resources occupied by the second DMRS pattern; frequency domain resources occupied by the first DMRS pattern are non-uniformly distributed in a bandwidth, and frequency domain resources occupied by the second DMRS pattern are uniformly distributed in the bandwidth.

7. The method of claim 6, wherein, A number of symbols occupied by the first DMRS pattern is an integer greater than or equal to 0.

8. The method of claim 6 or 7, wherein, In the first DMRS pattern, a number of REs occupied by each DMRS port in every RB on average is less than 1.

9. The method of any one of claims 6-8, wherein, The first DMRS pattern occupies a single symbol, supports 2 code division multiplexing (CDM) groups, each CDM group includes 8*M DMRS ports, and M is a positive integer.

10. The method of any one of claims 6-8, wherein, The first DMRS pattern occupies two symbols, supports 2 CDM groups, each CDM group includes 16*M DMRS ports, and M is a positive integer.

11. The method of claim 9 or 10, wherein, The starting position of the first RB in the RB corresponding to the first DMRS pattern and the point A are separated by 4*M*F RBs, and F is a non-negative positive integer.

12. The method of any one of claims 6-8, wherein, The first DMRS pattern occupies a single symbol, supports 3 CDM groups, each CDM group includes 8*A DMRS ports, and A is a positive integer.

13. The method of any one of claims 6-8, wherein, The first DMRS pattern occupies two symbols, supports 3 CDM groups, each CDM group includes 16*A DMRS ports, and A is a positive integer.

14. The method of claim 12 or 13, wherein, The starting position of the first RB in the RB corresponding to the first DMRS pattern and the point A are separated by 2*A*C RBs, and C is a non-negative integer.

15. A method of communication, comprising: The method is performed by a network device, and the method comprises: Receiving first information sent by a terminal, the first information being used to indicate at least one demodulation reference signal (DMRS) pattern.

16. The method of claim 15, wherein, The DMRS pattern is used to determine time domain resources and / or frequency domain resources of the DMRS. The frequency domain resources of the DMRS include at least one of the following: The number of resource elements (REs) occupied by each DMRS port in every N resource blocks (RBs); The position of the REs occupied by each DMRS port in every N RBs; wherein N is a positive integer.

17. The method of claim 15 or 16, wherein, The method further comprises: Receiving at least one of the following reported by a terminal: At least one first value M supported by the terminal, the M being: the number of REs occupied by each DMRS port in every RB on average; The terminal supports a first function, the first function including at least one of the following: AI-based DMRS channel estimation, sending a first DMRS pattern, and receiving a first DMRS pattern; wherein the first DMRS pattern is a DMRS pattern used by the terminal when performing AI-based DMRS channel estimation.

18. The method of claim 17, wherein, The M is a value greater than or equal to 0; wherein The M=0, the DMRS occupies the same REs as a first signal, or the DMRS occupies the same REs as a first channel, or the DMRS does not exist; The M>0, the DMRS occupies different REs from the first signal, or the DMRS occupies different REs from the first channel; Wherein The first signal is a signal other than the DMRS, and the first channel is a channel for transmitting a signal other than the DMRS.

19. The method of claim 17 or 18, wherein, The at least one first value M includes at least one of the following: The value of the M when the terminal performs AI-based DMRS channel estimation; The value of the M when the terminal does not perform AI-based DMRS channel estimation.

20. The method of any one of claims 15-19, wherein, The at least one DMRS pattern includes at least one of the following: a first DMRS pattern, a second DMRS pattern; wherein the first DMRS pattern and the second DMRS pattern satisfy at least one of the following: The first DMRS pattern supports a number of DMRS ports greater than a number of DMRS ports supported by the second DMRS pattern; The first DMRS pattern occupies less time domain resources than the second DMRS pattern occupies; The first DMRS pattern occupies frequency domain resources that are non-uniformly distributed in bandwidth, and the second DMRS pattern occupies frequency domain resources that are uniformly distributed in bandwidth.

21. The method of claim 20, wherein, The first DMRS pattern occupies a number of symbols that is an integer greater than or equal to 0.

22. The method of claim 20 or 21, wherein, In the first DMRS pattern, each DMRS port occupies an average number of REs in each RB that is less than 1.

23. The method of any one of claims 20-22, wherein, The first DMRS pattern occupies a single symbol and supports 2 code division multiplexing (CDM) groups; each CDM group includes 8xM DMRS ports; M is a positive integer.

24. The method of any one of claims 20-22, wherein, The first DMRS pattern occupies two symbols and supports 2 CDM groups; each CDM group includes 16xM DMRS ports; M is a positive integer.

25. The method of claim 23 or 24, wherein, The starting position of a first RB corresponding to the first DMRS pattern and a point A are separated by 4xMxF RBs; F is a non-negative positive integer.

26. The method of any one of claims 20-22, wherein, The first DMRS pattern occupies a single symbol and supports 3 CDM groups; each CDM group includes 8xA DMRS ports; A is a positive integer.

27. The method of any one of claims 20-22, wherein, The first DMRS pattern occupies two symbols and supports 3 CDM groups; each CDM group includes 16xA DMRS ports; A is a positive integer.

28. The method of claim 26 or 27, wherein, The starting position of a first RB corresponding to the first DMRS pattern and a point A are separated by 2xAxC RBs; C is a non-negative integer.

29. A communication method for a communication system, the communication system including a terminal, a network device, the method comprising: The terminal sends first information to the network device, the first information being used to indicate at least one demodulation reference signal (DMRS) pattern. The network device receives the first information sent by the terminal.

30. A terminal, characterized by Comprising: A transceiver module, configured to send first information to a network device, the first information being used to indicate at least one demodulation reference signal (DMRS) pattern.

31. A network device, comprising: Comprising: A transceiver module, configured to receive first information sent by a terminal, the first information being used to indicate at least one demodulation reference signal (DMRS) pattern.

32. A communications device, characterized by Comprising: One or more processors; a memory coupled to the processor, the memory having stored thereon instructions that, when executed by the processor, cause the communication device to perform the method of any of claims 1-14 or claims 15-28.

33. A communication system, characterized by comprising a terminal configured to implement the method of any of claims 1-14 and a network device configured to implement the method of any of claims 15-28.

34. A storage medium, the storage medium storing instructions, wherein, instructions that, when executed on a communication device, cause the communication device to perform the method of any of claims 1-14 or claims 15-28.

35. A program product, characterized by a computer program that, when executed by a communication device, implements the method of any of claims 1-14 or claims 15-28.

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