Resource mapping method, related equipment and storage medium

Abstract

The invention discloses a resource mapping method, related equipment and a storage medium. The method comprises the following steps: receiving first information sent by a terminal; the first information indicates the variable antenna characteristic quantity for downlink data receiving; determining second information based on the first information; the second information indicates resource mapping configuration; and sending the second information to the terminal.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technologies, and in particular, to a resource mapping method, related devices, and a storage medium. Background Art

[0002] In the New Radio (NR) protocol, channel sounding is mainly implemented based on the Downlink Channel State Information Reference Signal (CSI-RS) and the Uplink Sounding Reference Signal (SRS); the CSI-RS of multiple antenna ports can be multiplexed on a set of Resource Elements (REs) to meet the application requirements of Multiple-Input Multiple-Output (MIMO).

[0003] In a new type of MIMO system, when the transceiver antenna characteristics (such as analog beams) change rapidly in the time domain, the Inter Carrier Interference (ICI) generated in the frequency domain will affect the channel measurement accuracy and reduce the transmission performance. In order to eliminate the influence of ICI and achieve accurate channel measurement, a set of CSI-RS needs to be configured for different antenna characteristics respectively. However, according to the existing CSI-RS time-frequency resource mapping method, it is impossible to support channel measurement under a larger number of variable antenna characteristics. Summary of the Invention

[0004] Embodiments of the present application provide a resource mapping method, related devices, and a storage medium.

[0005] The technical solution of the embodiments of the present application is implemented as follows:

[0006] A resource mapping method, applied to a network device, the method includes:

[0007] Receiving first information sent by a terminal; the first information indicates the number of variable antenna characteristics for downlink data reception;

[0008] Based on the first information, determining second information; the second information indicates a resource mapping configuration;

[0009] Sending the second information to the terminal.

[0010] In the above solution, when the first information meets a first condition, the resource mapping configuration includes at least one of the following:

[0011] The first mapping pattern; the first mapping pattern includes a pattern in which the frequency-domain spreading factor is greater than the time-domain spreading factor;

[0012] The first mapping position; the first mapping position indicates resource elements of a channel state information reference signal resource at a first frequency-domain position and at a first time-domain position;

[0013] Wherein, the first condition characterizes that the antenna characteristics are variable.

[0014] In the above solution, when the first information satisfies the second condition, the resource mapping configuration includes at least one of the following:

[0015] The second mapping pattern; the second mapping pattern includes a pattern in which the frequency-domain spreading factor is less than or equal to the time-domain spreading factor;

[0016] The second mapping position; the second mapping position indicates resource elements of a channel state information reference signal resource at a second frequency-domain position and at a second time-domain position;

[0017] Wherein, the second condition characterizes that the antenna characteristics are unchanged.

[0018] In the above solution, when the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is greater than the number of subcarriers in a resource block of a channel state information reference signal resource, the resource mapping configuration is used to multiplex for the first time in the frequency domain and multiplex for the second time in the time domain to support a first number of antenna ports.

[0019] In the above solution, the first number of antenna ports is determined by the frequency-domain spreading factor, the time-domain spreading factor, the first number of times, and the second number of times.

[0020] In the above solution, when the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is less than the number of subcarriers in a resource block of a channel state information reference signal resource, the resource mapping configuration is used to multiplex for the third time in the frequency domain to support a second number of antenna ports.

[0021] In the above solution, sending the second information to the terminal includes:

[0022] Sending radio resource control signaling to the terminal, where the radio resource control signaling includes the second information.

[0023] In the above solution, the method further includes:

[0024] Using the channel state information reference signal resources defined by the resource mapping configuration to perform resource mapping on the channel state information reference signals of the first number of antenna ports;

[0025] Sending the channel state information reference signal to the terminal.

[0026] A resource mapping method, applied to a terminal, the method comprising:

[0027] Sending first information to a network device; the first information indicating the number of variable antenna characteristics for downlink data reception;

[0028] Receiving second information sent by the network device; the second information indicating a resource mapping configuration.

[0029] In the above solution, when the first information satisfies a first condition, the resource mapping configuration includes at least one of the following:

[0030] A first mapping pattern; the first mapping pattern includes a pattern in which a frequency-domain spreading factor is greater than a time-domain spreading factor;

[0031] A first mapping position; the first mapping position indicating resource elements of a channel state information reference signal resource at a first frequency-domain position and at a first time-domain position;

[0032] Wherein, the first condition characterizes that the antenna characteristics are variable.

[0033] In the above solution, when the first information satisfies a second condition, the resource mapping configuration includes at least one of the following:

[0034] A second mapping pattern; the second mapping pattern includes a pattern in which a frequency-domain spreading factor is less than or equal to a time-domain spreading factor;

[0035] A second mapping position; the second mapping position indicating resource elements of a channel state information reference signal resource at a second frequency-domain position and at a second time-domain position;

[0036] Wherein, the second condition characterizes that the antenna characteristics are unchanged.

[0037] In the above solution, the receiving the second information sent by the network device includes:

[0038] Receiving radio resource control signaling sent by the network device, the radio resource control signaling including the second information.

[0039] In the above solution, the method further includes:

[0040] Receiving a channel state information reference signal sent by the network device.

[0041] A resource mapping apparatus, comprising:

[0042] A first receiving unit, configured to receive first information sent by a terminal; the first information indicating the number of variable antenna characteristics for downlink data reception;

[0043] A processing unit, configured to determine second information based on the first information; the second information indicates a resource mapping configuration.

[0044] A first sending unit, configured to send the second information to the terminal.

[0045] A resource mapping device, comprising:

[0046] A second sending unit, configured to send first information to a network device; the first information indicates the number of variable antenna characteristics for downlink data reception.

[0047] A second receiving unit, configured to receive the second information sent by the network device; the second information indicates a resource mapping configuration.

[0048] A network device, comprising: a first communication interface and a first processor; wherein,

[0049] The first communication interface is configured to receive the first information sent by a terminal; the first information indicates the number of variable antenna characteristics for downlink data reception.

[0050] The first processor is configured to determine second information based on the first information; the second information indicates a resource mapping configuration.

[0051] The first communication interface is further configured to send the second information to the terminal.

[0052] A terminal, comprising: a second communication interface and a second processor; wherein, the second communication interface is configured to send first information to a network device; the first information indicates the number of variable antenna characteristics for downlink data reception; and receive the second information sent by the network device; the second information indicates a resource mapping configuration.

[0053] A network device, comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

[0054] Wherein, when the first processor is used to run the computer program, it executes the steps of any of the methods on the network device side.

[0055] A terminal, comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

[0056] Wherein, when the second processor is used to run the computer program, it executes the steps of any of the methods on the terminal side.

[0057] A storage medium stores a computer program, and when the computer program is executed by a processor, it implements the steps of any of the methods on the network device side or the steps of any of the methods on the terminal side.

[0058] In the resource mapping method, related devices, and storage medium provided by the embodiments of the present application, a network device receives first information sent by a terminal; the first information indicates the number of variable antenna characteristics for downlink data reception; based on the first information, second information is determined; the second information indicates resource mapping configuration; and the second information is sent to the terminal. That is to say, in the embodiments of the present application, the network device determines the resource mapping configuration according to the number of variable antenna characteristics indicated by the first information (characterizing variable or invariable antenna characteristics), that is, the network device can determine different resource mapping methods according to the number of variable antenna characteristics reported by the terminal, optimizing the time-frequency resource mapping method in the existing protocol. This solves the problem that the resource mapping method of CSI-RS in related technologies cannot support channel measurement under more variable antenna characteristic numbers, realizes the optimization of the resource mapping method, and meets the channel measurement requirements under more variable antenna characteristics. Description of the Drawings

[0059] Figure 1 It is a schematic diagram of the CSI-RS resource mapping pattern in related technologies;

[0060] Figure 2 It is a schematic diagram of the time-frequency resource mapping of 24-port CSI-RS in related technologies;

[0061] Figure 3 It is a schematic flowchart of a resource mapping method provided by an embodiment of the present application;

[0062] Figure 4 It is a schematic diagram of the time-frequency resource mapping of 24-port CSI-RS with 2 groups of antenna characteristics provided by an embodiment of the present application;

[0063] Figure 5 It is another schematic diagram of the time-frequency resource mapping of 24-port CSI-RS with 2 groups of antenna characteristics provided by an embodiment of the present application;

[0064] Figure 6 It is a schematic diagram of the CSI-RS resource mapping pattern with variable terminal antenna characteristics provided by an embodiment of the present application;

[0065] Figure 7 It is a third schematic diagram of the time-frequency resource mapping of 24-port CSI-RS with 2 groups of antenna characteristics provided by an embodiment of the present application;

[0066] Figure 8Schematic diagram of time-frequency resource mapping of 24-port CSI-RS with the characteristics of the fourth two groups of antennas provided by the embodiments of the present application;

[0067] Figure 9 Schematic diagram of another resource mapping method provided by the embodiments of the present application;

[0068] Figure 10 Flow chart of the third resource mapping method provided by the embodiments of the present application;

[0069] Figure 11 Schematic diagram of the structure of a resource mapping device provided by the embodiments of the present application;

[0070] Figure 12 Schematic diagram of the structure of another resource mapping device provided by the embodiments of the present application;

[0071] Figure 13 Schematic diagram of the structure of a network device provided by the embodiments of the present application;

[0072] Figure 14 Schematic diagram of the structure of a terminal provided by the embodiments of the present application. Detailed implementation manners

[0073] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be further described in detail below with reference to the accompanying drawings and embodiments. The described embodiments should not be regarded as limitations to the present application. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0074] In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments. However, it can be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments, and can be combined with each other without conflict.

[0075] The terms "first / second / third" involved in the present application are only used to distinguish similar objects, and do not represent a specific order for the objects. It can be understood that "first / second / third" can be interchanged with a specific order or sequence when permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

[0076] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0077] In the related art, CSI-RS can estimate the information of the relevant downlink channel through the downlink measurement of the terminal or, based on the reciprocity of the channel, through the uplink measurement of the base station. During the downlink measurement and reporting process, the terminal can perform different measurements according to the network configuration and report the measurement results to the network. According to different uses, CSI-RS can be classified as follows:

[0078] 1. Channel state information measurement: mainly including Channel Quality Indicator (CQI), Rank Indicator (RI), Precoder Matrix Indicator (PMI), and Reference Signal Receiving Power (RSRP).

[0079] 2. Measurement of time offset and frequency offset: Tracking Reference Signal (TRS).

[0080] 3. Beam training: L1-RSRP computation

[0081] 4. Mobility management: CSI-RS for mobility

[0082] 5. Rate matching (Zero Power Channel State Information Reference Signal, ZP-CSI-RS).

[0083] 6. Interference measurement: (CSI Interference Measurement, CSI-IM).

[0084] Multiple CSI-RS ports can be distinguished by Code Division Multiplexing (CDM) in the same time-frequency resource, and up to 32 antenna ports can be supported. In the NR protocol, there are 4 types of CDM for CSI-RS, and specifically, it can be known according to the spreading mode parameter cdm-Type in the Radio Resource Control (RRC) signaling.

[0085] Reference Figure 1 As shown

[0086] 1. noCDM (no spreading).

[0087] 2. fd-CDM2 (frequency-domain spreading with a spreading factor of 2).

[0088] 3. cdm4-FD2-TD2 (Time-Frequency Domain Spread with a spreading factor of 2).

[0089] 4. cdm8-FD2-TD4 (Frequency Domain Spreading Factor of 2 and Time Domain Spreading Factor of 4).

[0090] The resource configuration of CSI-RS can be jointly determined according to fields such as cdm-Type, the number of antenna ports, and the CSI-RS pilot density (Density). According to the NR protocol, the time-frequency resource corresponding position of CSI-RS is: in the frequency domain in the time domain is the number of subcarriers in a Resource Block (RB); n is the RB index, and the value can be 0 - 272.

[0091] Reference Figure 2 As shown, taking cdm8-FD2-TD4 as an example, the time-frequency resource mapping of the 24-port CSI-RS is supported by occupying 2 consecutive adjacent subcarriers in the frequency domain, 4 consecutive (Orthogonal Frequency Division Multiplexing, OFDM) orthogonal frequency division multiplexing symbols in the time domain, and multiplexing 3 times in the frequency domain.

[0092] In the case where the terminal antenna characteristics are variable, in order to overcome the ICI effect and achieve accurate channel measurement, the base station needs to set multiple groups of CSI-RS pilots to perform channel measurements on different antenna characteristics. The CSI-RS corresponding to different antenna characteristics needs to occupy different symbols within a time slot to support more data antenna ports.

[0093] The following further elaborates on the present application in conjunction with the attached drawings and specific embodiments.

[0094] An embodiment of the present application provides a resource mapping method, which is applied to a network device. Referring to Figure 3 as shown, the method includes the following steps:

[0095] Step S301: Receive the first information sent by the terminal.

[0096] Among them, the first information indicates the number of variable antenna characteristics for downlink data reception.

[0097] In practical applications, the terminal can also be referred to as a User Equipment (UE), and the network device can include a base station (such as a gNB, etc.).

[0098] The first piece of information indicates the number of variable antenna characteristics for downlink data reception, which can be understood as the base station determining the number N of variable antenna characteristics of the terminal according to the first piece of information. f After the terminal performs downlink measurement, it can report the first piece of information and the measurement result to the base station together.

[0099] Step S302: Determine the second piece of information based on the first piece of information.

[0100] Wherein, the second piece of information indicates the resource mapping configuration.

[0101] It can be understood that the resource mapping configuration may include a mapping pattern and a mapping position. The mapping pattern can be understood as the CDM type of CSI-RS, and the mapping position can be understood as the corresponding position of time-frequency resources.

[0102] Determining the second piece of information based on the first piece of information can be understood as the base station determining the CSI-RS resource mapping configuration of different antenna characteristics according to the number N of variable antenna characteristics reported by the terminal. f to determine the CSI-RS resource mapping configuration of different antenna characteristics.

[0103] In practical applications, when the terminal adopts a digital-analog hybrid antenna structure, the terminal can implement two analog beams (beam 1 and beam 2). At this time, it can be understood that N f is 2. The terminal switches between beam 1 and beam 2 in the symbol period of each data channel, and realizes the expansion of the number of receiving channels through the rapid change of antenna characteristics. Considering the ICI impact caused by beam switching within the symbol period, the base station can set a group of CSI-RS pilots for beam 1 and beam 2 respectively for channel measurement.

[0104] Reference Figure 2 As shown, if the mapping pattern of cdm8-FD2-TD4 is adopted, at this time, the time-frequency resource mapping of the CSI-RS of 24 ports needs to occupy 8 symbols in the time domain to support. If it is necessary to reduce the overhead of time domain resources and support more antenna ports for data at the same time, frequency domain multiplexing can be preferred, that is, the base station can adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping according to N f to adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping. Exemplarily, if N f >1, the base station can adopt a mapping pattern with a frequency domain spreading factor greater than the time domain spreading factor to reduce the overhead of time domain resources; or adjust the resource mapping position so that the CSI-RS of the same antenna characteristic occupies the same symbols as much as possible in the time domain; for example: adjust the time and frequency position offset values l' and k' under different configurations in the protocol.

[0105] Step S303: Send the second piece of information to the terminal.

[0106] In practical applications, the base station can determine according to N fDetermine the resource mapping configuration of CSI-RS according to the value of , generate the second information, and send it to the terminal through RRC signaling.

[0107] As can be seen from the above, in the embodiment of the present application, the terminal sends the first information to the network device to indicate the number of variable antenna characteristics (characterizing that the antenna characteristics are variable or the antenna characteristics are unchanged), and the network device determines the resource mapping configuration according to the number of variable antenna characteristics and sends it to the terminal through the second information; to enable the network device to adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping according to the number of variable antenna characteristics, and optimize the time-frequency resource mapping method in the existing protocol. It solves the problem that the resource mapping method of CSI-RS in the related art cannot support channel measurement under more variable antenna characteristic numbers, realizes the optimization of the resource mapping method, and meets the channel measurement requirements under more variable antenna characteristics.

[0108] In some embodiments of the present application, when the first information meets the first condition, the resource mapping configuration includes at least one of the following:

[0109] The first mapping pattern; the first mapping pattern includes a pattern where the frequency domain spreading factor is greater than the time domain spreading factor;

[0110] The first mapping position; the first mapping position indicates the resource elements of the channel state information reference signal resource at the first frequency domain position and at the first time domain position;

[0111] Wherein, the first condition characterizes that the antenna characteristics are variable.

[0112] It can be understood that the base station can set a multi-antenna feature (MAF) flag field in the RRC signaling to indicate whether the antenna characteristics of the terminal are variable, and activate the corresponding CSI-RS resource mapping mode according to the value of N f of the activation corresponding CSI-RS resource mapping mode.

[0113] The number of antenna characteristics N f can be represented explicitly, or implicitly notified by using the fields first OFDM Symbol InTimeDomain and first OFDM Symbol InTime Domain2. When N f > 1, MAF can be set to 1. At this time, the base station can adopt the CSI-RS resource mapping mode with variable antenna characteristics, that is, adopt a mapping pattern with a spreading factor greater than the time domain spreading factor, or adjust the time and frequency position offset values l' and k' under different configurations in the protocol; when N f = 1, MAF can be set to 0. At this time, the base station can adopt the CSI-RS resource mapping mode with unchanged antenna characteristics.

[0114] In practical applications, a time-frequency mapping table can be constructed to adjust the time and frequency position offset values l' and k' under different configurations in the protocol; Table 1 is the time-frequency mapping table of CSI-RS under variable antenna characteristics.

[0115]

[0116]

[0117] Table 1

[0118] ROW is the index of each row, X is the number of antenna ports; ρ is the pilot density; each row in the table corresponds to the resource mapping structure under different configurations, which is determined by the settings of fields such as Bitmap, Ports, Density, cdm-Type, etc. in the RRC signaling. Among them, the bit sequence Bitmap is used to indicate the RE positions where CSI-RS is mapped in the Physical Resource Block (PRB), and the mapping rule of the mapping function f(i) is defined as follows in combination with Table 1:

[0119] [b3,...,b0],k i-1 =f(i)for row 1

[0120] [b11,...,b0],k i-1 =f(i)for row 2

[0121] [b2,...,b0],k i-1 =4f(i)for row 4,18,24

[0122] [b5,...,b0],k i-1 =2f(i)for other rows

[0123] The variable antenna characteristics can be understood as N f >1. Taking N f as 2 for example, as shown in Figure 4 , for the time-frequency resource mapping of 24-port CSI-RS, if the cdm8-FD2-TD4 mapping pattern is adopted, CSI-RS needs to occupy 8 symbols in the time domain in total. The time-frequency resources correspond to the 17th row in Table 1. As shown in Figure 5 , for the time-frequency resource mapping of 24-port CSI-RS, if the cdm4-FD2-TD2 mapping pattern is adopted, CSI-RS needs to occupy 8 symbols in the time domain in total. The time-frequency resources correspond to the 15th row in Table 1.

[0124] To support channel measurements in the case of variable terminal antenna characteristics, the resource mapping pattern and mapping position of CSI-RS in the existing protocol can be optimized to reduce the use of CSI-RS for time-domain resources. As shown in Reference 6, for the CSI-RS resource mapping pattern with variable terminal antenna characteristics, the mapping of CSI-RS to time-domain resources is reduced, making the frequency-domain spreading factor greater than the time-domain spreading factor under different cdm-Type, providing more time-domain resources for channel measurement for the change of terminal antenna characteristics. The first mapping pattern can be understood as any pattern in Figure 6 This application does not make specific limitations on this. At the same time, by adjusting the time-frequency position offset values l' and k' under different configurations in the protocol, the mapping position where the CSI-RS pilot preferentially occupies frequency-domain resources under different cdm-Type can be adjusted, optimizing the mapping position of time-frequency resources and improving the utilization efficiency of time-frequency resources.

[0125] In an implementable scenario, referring to Figure 6 and Table 1, the configuration parameters of the CSI-RS time-frequency domain resource mapping with variable terminal antenna characteristics in CSI-RS-ResourceMapping can be as follows:

[0126]

[0127] From the above configuration parameters, it can be seen that this application adjusts the cdm-Type and time-frequency resource positions for the CSI-RS time-frequency domain resource mapping with variable terminal antenna characteristics, configures the MAF field, and supports up to 48 ports at most.

[0128] The first frequency-domain position can be understood as the frequency-domain position corresponding to the frequency-domain position offset value that preferentially occupies frequency-domain resources under different mapping patterns, and the first time-domain position can be understood as the time-domain position corresponding to the time-domain position offset value that preferentially occupies frequency-domain resources under different mapping patterns. The first frequency-domain position and the first time-domain position can be determined by querying the frequency-domain position offset value and the time-domain position offset value in the mapping resource table.

[0129] In some embodiments of this application, when the first information satisfies the second condition, the resource mapping configuration includes at least one of the following:

[0130] The second mapping image; the second mapping pattern includes a pattern where the frequency-domain spreading factor is less than or equal to the time-domain spreading factor;

[0131] The second mapping position; the second mapping position indicates the resource element of the channel state information reference signal at the second frequency-domain position and at the second time-domain position;

[0132] Among them, the second condition characterizes that the antenna characteristics remain unchanged.

[0133] In practical applications, the antenna characteristics remaining unchanged can be understood as N f = 1. At this time, CSI-RS resource mapping can be performed according to the cdm-Type in the existing NR protocol, that is, the mapping pattern where the frequency-domain spreading factor is less than or equal to the time-domain spreading factor; the second frequency-domain position and the second time-domain position can be determined by looking up a table according to the number of ports supported by the CSI-RS.

[0134] In some embodiments of the present application, in the case where the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is greater than the number of subcarriers in the resource block of the channel state information reference signal resource, the resource mapping configuration is used to multiplex for the first time in the frequency domain and for the second time in the time domain to support the first number of antenna ports.

[0135] In practical applications, if N f > 1, the cdm-Type adopted should satisfy α F > α T , where α F is the frequency-domain spreading factor and α T is the time-domain spreading factor.

[0136] In the embodiments of the present application, the frequency-domain multiplexing times is represented as n F . If that is, the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is greater than the number of subcarriers in the resource block of the channel state information reference signal resource, at this time, the cdm-Type is multiplexed in the time domain;

[0137]

[0138] where n T is the multiplexing times in the time domain, represents the number of symbols in a slot, and the foregoing parameters satisfy α F α T n F n T = N port , and N port is the number of antenna ports supported by the CSI-RS.

[0139] In some embodiments of the present application, the first number of antenna ports is determined by the frequency-domain spreading factor, the time-domain spreading factor, the first times, and the second times.

[0140] In practical applications, N port is the number of antenna ports supported by the CSI-RS, the first frequency-domain multiplexing times n F , the second time-domain multiplexing times n T , the frequency-domain spreading factor α F and the time-domain spreading factor α T need to satisfy α F αT n F n T = N port 。

[0141] In some embodiments of the present application, when the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is less than the number of subcarriers in the resource block of the channel state information reference signal resource, the resource mapping configuration is used to multiplex for the third time in the frequency domain to support the second number of antenna ports.

[0142] In practical applications, if then n T = 0, indicating that cdm-Type is not multiplexed in the time domain and is only multiplexed for the third time n F times in the frequency domain to support N port ports.

[0143] In an achievable scenario, taking N f as 2, the terminal switches between beam 1 and beam 2 in the symbol period of each data channel, and optimizes the CSI-RS time-frequency structure under the existing protocol configuration based on the CSI-RS resource mapping of 24 ports.

[0144] Refer to Figure 4 as shown. The base station measures the channels of beam 1 and beam 2 of the terminal respectively, and 2 groups of CSI-RS need to occupy 8 symbols in total. Refer to Figure 7 as shown. Based on the code division multiplexing method of CDM8 (FD4 TD2), by optimizing the resource mapping pattern, the frequency-domain spreading factor of CSI-RS is made greater than the time-domain spreading factor; the number of symbols occupied by CSI-RS is reduced, and up to 48 ports can be supported.

[0145] Refer to Figure 5 as shown. The base station measures the channels of beam 1 and beam 2 of the terminal respectively, and 2 groups of CSI-RS need to occupy 8 symbols in total. Refer to Figure 8 as shown. Based on the code division multiplexing method of CDM4 (FD2 TD2), by adjusting the time and frequency position offset values l' and k' in the corresponding configuration of the current protocol, the resource mapping position is optimized, so that CSI-RS under the same antenna characteristics is as much as possible within the same symbol, reducing the number of symbols occupied by CSI-RS and meeting the channel measurement requirements when the terminal has multiple antenna characteristics.

[0146] As can be seen from the above, in the embodiments of the present application, the terminal sends the first information to the network device to indicate the number of variable antenna characteristics (indicating that the antenna characteristics are variable or the antenna characteristics are unchanged), and the network device determines the resource mapping configuration according to the number of variable antenna characteristics and sends it to the terminal through the second information; so as to enable the network device to adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping according to the number of variable antenna characteristics, so that the CSI-RS with the same antenna characteristics occupies the same symbols as much as possible in the time domain, optimizing the time-frequency resource mapping method in the existing protocol. It solves the problem that the resource mapping method of CSI-RS in the related art cannot support channel measurement under more variable antenna characteristic numbers, realizes the optimization of the resource mapping method, and meets the channel measurement requirements under more variable antenna characteristics.

[0147] In some embodiments of the present application, step S303 of sending the second information to the terminal can be implemented in the following manner:

[0148] Send radio resource control signaling to the terminal, and the radio resource control signaling includes the second information.

[0149] In practical applications, after the base station determines the resource mapping mode of CSI-RS according to the number of antenna variable characteristics, it generates the second information based on the configuration of the resource mapping mode and sends it to the terminal through radio resource control signaling.

[0150] In some embodiments of the present application, the method further includes:

[0151] Use the channel state information reference signal resources defined by the resource mapping configuration to perform resource mapping on the channel state information reference signals of the first number of antenna ports;

[0152] Send the channel state information reference signal to the terminal.

[0153] In practical applications, the base station completes the resource mapping of CSI-RS according to the configuration of the resource mapping mode and sends the channel state information reference signal to the terminal.

[0154] The embodiments of the present application provide a resource mapping method, which is applied to a terminal. Referring to Figure 9 as shown, the method includes the following steps:

[0155] Step S901: Send the first information to the network device.

[0156] Among them, the first information indicates the number of variable antenna characteristics for downlink data reception.

[0157] In practical applications, after the terminal performs downlink measurement, it can report the first information and the measurement result to the base station together, and the base station determines the number N of variable antenna characteristics of the terminal according to the first information f .

[0158] Step S902: Receive the second information sent by the network device.

[0159] The second information indicates a resource mapping configuration.

[0160] It can be understood that the resource mapping configuration may include a mapping pattern and a mapping position. The mapping pattern can be understood as the CDM type of CSI-RS, and the mapping position can be understood as the corresponding position of time-frequency resources.

[0161] In practical applications, the base station can determine the resource mapping configuration of CSI-RS according to the value of N f generate the second information, and send it to the terminal through RRC signaling.

[0162] As can be seen from the above, in the embodiments of the present application, the terminal sends the first information to the network device to indicate the number of variable antenna characteristics (characterizing that the antenna characteristics are variable or the antenna characteristics are unchanged), and the network device determines the resource mapping configuration according to the number of variable antenna characteristics and sends it to the terminal through the second information; so as to enable the network device to adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping according to the number of variable antenna characteristics, so that the CSI-RS with the same antenna characteristics occupies the same symbols as much as possible in the time domain, optimizing the time-frequency resource mapping method in the existing protocol. It solves the problem that the resource mapping method of CSI-RS in the related art cannot support channel measurement under more variable antenna characteristic numbers, realizes the optimization of the resource mapping method, and meets the channel measurement requirements under more variable antenna characteristics.

[0163] In some embodiments of the present application, when the first information meets the first condition, the resource mapping configuration includes at least one of the following:

[0164] The first mapping pattern; the first mapping pattern includes a pattern in which the frequency-domain spreading factor is greater than the time-domain spreading factor;

[0165] The first mapping position; the first mapping position indicates the resource element of the channel state information reference signal resource at the first frequency-domain position and at the first time-domain position;

[0166] The first condition characterizes that the antenna characteristics are variable.

[0167] It can be understood that the first mapping pattern and the first mapping position can be understood with reference to the above method, and will not be elaborated here.

[0168] In some embodiments of the present application, when the first information meets the second condition, the resource mapping configuration includes at least one of the following:

[0169] The second mapping pattern; the second mapping pattern includes a pattern in which the frequency-domain spreading factor is less than or equal to the time-domain spreading factor;

[0170] The second mapping position; the second mapping position indicates the resource element of the channel state information reference signal resource at the second frequency domain position and at the second time domain position;

[0171] Wherein, the second condition characterizes that the antenna characteristics remain unchanged.

[0172] It can be understood that the second mapping pattern and the second mapping position can be understood with reference to the above method, and will not be elaborated here.

[0173] In some embodiments of the present application, step S902 of receiving the second information sent by the network device can be implemented in the following manner:

[0174] Receive the radio resource control signaling sent by the network device, and the radio resource control signaling includes the second information.

[0175] In practical applications, the base station can determine the resource mapping configuration of CSI-RS according to the value of N f , generate the second information, and send it to the terminal through the RRC signaling; the terminal receives the RRC signaling.

[0176] In some embodiments of the present application, the method further includes:

[0177] Receive the channel state information reference signal sent by the network device.

[0178] It can be understood that the base station completes the resource mapping of CSI-RS according to the configuration of the resource mapping mode; sends the channel state information reference signal to the terminal, and the terminal receives the channel state information reference signal to complete the channel measurement.

[0179] In a realizable scenario, as shown in Figure 10 : The resource mapping method in the embodiments of the present application can be implemented in the following manner:

[0180] 1. The terminal reports the variable antenna characteristic number N f .

[0181] 2. The base station determines the CSI-RS mapping mode (mapping pattern, mapping position) according to the value of N f .

[0182] 3. The base station completes the CSI-RS resource mapping of different antenna characteristics according to the high-layer signaling indication and sends it.

[0183] 4. The terminal completes the channel measurement and reports the result.

[0184] As can be seen from the above, in the embodiments of the present application, the terminal sends the first information to the network device to indicate the number of variable antenna characteristics (characterizing whether the antenna characteristics are variable or unchanged). The network device determines the resource mapping configuration according to the number of variable antenna characteristics and sends it to the terminal through RRC signaling, so as to enable the network device to adjust the mapping pattern and mapping position of the CSI-RS time-frequency resource mapping according to the number of variable antenna characteristics, optimizing the time-frequency resource mapping method in the existing protocol, solving the problem that the resource mapping method of CSI-RS in the related art cannot support channel measurement under more variable antenna characteristic numbers, realizing the optimization of the resource mapping method, and meeting the channel measurement requirements under more variable antenna characteristics.

[0185] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a resource mapping device, which is set on the network device, as Figure 11 shown. The device 1100 includes:

[0186] A first receiving unit 1101, configured to receive the first information sent by the terminal; the first information indicates the number of variable antenna characteristics for downlink data reception;

[0187] A processing unit 1102, configured to determine second information based on the first information; the second information indicates the resource mapping configuration;

[0188] A first sending unit 1103, configured to send the second information to the terminal.

[0189] In some embodiments of the present application, when the first information meets the first condition, the resource mapping configuration includes at least one of the following:

[0190] A first mapping pattern; the first mapping pattern includes a pattern in which the frequency domain spreading factor is greater than the time domain spreading factor;

[0191] A first mapping position; the first mapping position indicates the resource elements of the channel state information reference signal resource at the first frequency domain position and at the first time domain position;

[0192] Wherein, the first condition characterizes that the antenna characteristics are variable.

[0193] In some embodiments of the present application, when the first information meets the second condition, the resource mapping configuration includes at least one of the following:

[0194] A second mapping pattern; the second mapping pattern includes a pattern in which the frequency domain spreading factor is less than or equal to the time domain spreading factor;

[0195] A second mapping position; the second mapping position indicates the resource elements of the channel state information reference signal resource at the second frequency domain position and at the second time domain position;

[0196] Among them, the second condition characterizes that the antenna characteristics remain unchanged.

[0197] In some embodiments of the present application, when the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is greater than the number of subcarriers in the resource block of the channel state information reference signal resource, the resource mapping configuration is used to multiplex for the first time in the frequency domain and multiplex for the second time in the time domain to support the first number of antenna ports.

[0198] In some embodiments of the present application, the first number of antenna ports is determined by the frequency-domain spreading factor, the time-domain spreading factor, the first number of times, and the second number of times.

[0199] In some embodiments of the present application, when the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is less than the number of subcarriers in the resource block of the channel state information reference signal resource, the resource mapping configuration is used to multiplex for the third time in the frequency domain to support the second number of antenna ports.

[0200] In some embodiments of the present application, the first sending unit 1103 is further configured to send radio resource control signaling to the terminal, and the radio resource control signaling includes second information.

[0201] In some embodiments of the present application, the first sending unit 1103 is further configured to perform resource mapping on the channel state information reference signals of the first number of antenna ports by using the channel state information reference signal resources defined by the resource mapping configuration; and send the channel state information reference signals to the terminal.

[0202] To implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a resource mapping device, which is set on the terminal, as Figure 12 shown. The device 1200 includes:

[0203] A second sending unit 1201, configured to send first information to the network device; the first information indicates the number of variable antenna characteristics for downlink data reception;

[0204] A second receiving unit 1202, configured to receive second information sent by the network device; the second information indicates the resource mapping configuration.

[0205] In some embodiments of the present application, when the first information meets the first condition, the resource mapping configuration includes at least one of the following:

[0206] A first mapping pattern; the first mapping pattern includes a pattern in which the frequency-domain spreading factor is greater than the time-domain spreading factor;

[0207] A first mapping position; the first mapping position indicates the resource element of the channel state information reference signal resource at the first frequency domain position and at the first time domain position;

[0208] Among them, the first condition characterizes that the antenna characteristics are variable.

[0209] In some embodiments of the present application, when the first information meets the second condition, the resource mapping configuration includes at least one of the following:

[0210] A second mapping image; the second mapping pattern includes a pattern in which the frequency-domain spreading factor is less than or equal to the time-domain spreading factor;

[0211] A second mapping position; the second mapping position indicates resource elements of a channel state information reference signal resource at a second frequency-domain position and at a second time-domain position;

[0212] Among them, the second condition characterizes that the antenna characteristics remain unchanged.

[0213] In some embodiments of the present application, the second receiving unit 1202 is further configured to receive radio resource control signaling sent by a network device, and the radio resource control signaling includes second information.

[0214] In some embodiments of the present application, the second receiving unit 1202 is further configured to receive a channel state information reference signal sent by a network device.

[0215] It should be noted that: when the resource mapping device provided in the above embodiment performs resource mapping, only the above division of each program module is used for illustration. In practical applications, the above processing can be allocated to different program modules according to needs, that is, the internal structure of the device is divided into different program modules to complete all or part of the above-described processing. In addition, the resource mapping device provided in the above embodiment and the resource mapping method embodiment belong to the same concept. For the specific implementation process, see the method embodiment, which will not be elaborated here.

[0216] Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a network device, as Figure 13 shown. The network device 1300 includes:

[0217] A first communication interface 1301 capable of interacting with a terminal;

[0218] A first processor 1302 connected to the first communication interface 1301 to implement information interaction with the terminal, and when running a computer program, execute the method provided by one or more of the above technical solutions on the network device side;

[0219] A first memory 1303, and the computer program is stored on the first memory 1303.

[0220] Specifically, the first communication interface 1301 is configured to receive a first piece of information sent by a terminal; the first piece of information indicates the number of variable antenna characteristics for downlink data reception.

[0221] The first processor 1302 is configured to determine a second piece of information based on the first piece of information; the second piece of information indicates a resource mapping configuration.

[0222] The first communication interface 1301 is configured to send the second piece of information to the terminal.

[0223] In some embodiments of the present application, the first communication interface 1301 is configured to send radio resource control signaling to the terminal, and the radio resource control signaling includes the second piece of information.

[0224] In some embodiments of the present application, the first processor 1302 is configured to perform resource mapping on the channel state information reference signals of the first number of antenna ports by using the channel state information reference signal resources defined by the resource mapping configuration.

[0225] The first communication interface 1301 is configured to send the encoded channel state information reference signals to the terminal.

[0226] It should be noted that: The specific processing procedures of the first communication interface 1301 and the first processor 1302 can be understood with reference to the above method, and will not be elaborated here.

[0227] Of course, in actual application, each component in the network device 1300 is coupled together through the bus system 1304. It can be understood that the bus system 1304 is used to realize the connection and communication between these components. The bus system 1304 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 13 all kinds of buses are labeled as the bus system 1304.

[0228] The first memory 1303 in the embodiments of the present application is used to store various types of data to support the operation of the network device 1300. Examples of these data include: any computer program for operating on the network device 1300.

[0229] The method disclosed in the embodiments of the present application can be applied to or implemented by the first processor 1302. The first processor 1302 may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method can be completed by the integrated logic circuit in hardware or instructions in software form in the first processor 1302. The first processor 1302 may be a general-purpose processor, a digital signal processor (DSP), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The first processor 1302 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application, it can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the first memory 1303. The first processor 1302 reads the information in the first memory 1303 and combines its hardware to complete the steps of the foregoing method.

[0230] In an exemplary embodiment, the network device 1300 can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontroller units (MCUs), microprocessors, or other electronic components, and is used to execute the foregoing method.

[0231] Based on the hardware implementation of the foregoing program module, and in order to implement the method on the network device side in the embodiments of the present application, the embodiments of the present application further provide a terminal, as Figure 14 shown. The terminal 1400 includes:

[0232] A second communication interface 1401 capable of interacting with the network device for information;

[0233] A second processor 1402, connected to the second communication interface 1101 to enable information interaction with a network device, and when running a computer program, executes the method provided by one or more of the above terminal-side technical solutions;

[0234] A second memory 1403, on which the computer program is stored.

[0235] Specifically, the second communication interface 1401 is configured to send a first message to the network device; the first message indicates the number of variable antenna characteristics for downlink data reception; and receive a second message sent by the network device; the second message indicates a resource mapping configuration.

[0236] In some embodiments of the present application, the second communication interface 1401 is configured to receive radio resource control signaling sent by the network device, and the radio resource control signaling includes the second message.

[0237] In some embodiments of the present application, the second communication interface 1401 is configured to receive a channel state information reference signal sent by the network device.

[0238] It should be noted that: The specific processing procedures of the second communication interface 1401 and the second processor 1402 can be understood with reference to the above method and will not be elaborated here.

[0239] Of course, in actual application, the various components in the terminal 1400 are coupled together through a bus system 1404. It can be understood that the bus system 1404 is used to implement the connection and communication between these components. The bus system 1404 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for the sake of clear illustration, in Figure 14 all the various buses are labeled as the bus system 1404.

[0240] The second memory 1403 in the embodiments of the present application is used to store various types of data to support the operation of the terminal 1400. Examples of these data include: any computer program for operating on the terminal 1400.

[0241] The method disclosed in the embodiments of the present application can be applied to or implemented by the second processor 1402. The second processor 1402 may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above method can be completed by the integrated logic circuit of the hardware in the second processor 1402 or instructions in the form of software. The second processor 1402 may be a general-purpose processor, DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The second processor 1402 can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. Combining the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and this storage medium is located in the second memory 1403. The second processor 1402 reads the information in the second memory 1403 and combines its hardware to complete the steps of the foregoing method.

[0242] In an exemplary embodiment, the terminal 1400 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components for executing the foregoing method.

[0243] It can be understood that the memories (the first memory 1303 and the second memory 1403) in the embodiments of the present application can be volatile memories or non-volatile memories, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory), an electrically erasable programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), a ferromagnetic random access memory (FRAM, ferromagnetic random access memory), a flash memory (Flash Memory), a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM, Random Access Memory), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as a static random access memory (SRAM, Static Random Access Memory), a synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), a dynamic random access memory (DRAM, Dynamic Random Access Memory), a synchronous dynamic random access memory (SDRAM, Synchronous Dynamic Random Access Memory), a double data rate synchronous dynamic random access memory (DDR SDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), an enhanced synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), a sync link dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), a direct rambus random access memory (DRRAM, Direct Rambus Random Access Memory).The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0244] In an exemplary embodiment, the embodiments of the present application also provide a storage medium, specifically a computer storage medium, and more specifically a computer-readable storage medium. For example, it includes a first memory 1303 that stores a computer program, and the above computer program can be executed by a first processor 1302 of a network device 1300 to complete the steps described in the foregoing network device-side method. Another example is a second memory 1403 that stores a computer program, and the above computer program can be executed by a second processor 1402 of a terminal 1400 to complete the steps described in the foregoing terminal-side method. The computer-readable storage medium can be a FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM, etc.

[0245] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including such element.

[0246] The serial numbers of the embodiments of the present application above are only for description and do not represent the superiority or inferiority of the embodiments.

[0247] Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disc) and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present application.

[0248] This application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to embodiments of the present application. It should be understood that each flow and / or block in the flowchart and / or block diagram, as well as the combination of flows and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processor of the computer or other programmable data processing devices produce means for implementing the functions specified in one or more flows and / or blocks Figure 1 in one or more of the flows and / or blocks Figure 1 or in one or more of the blocks.

[0249] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in one or more of the flows and / or blocks Figure 1 in one or more of the flows and / or blocks Figure 1 or in one or more of the blocks.

[0250] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more of the flows and / or blocks Figure 1 in one or more of the flows and / or blocks Figure 1 or in one or more of the blocks.

[0251] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present application.

Claims

1. A resource mapping method, characterized in that Applied to a network device, the method includes: Receiving first information sent by a terminal; the first information indicates the number of variable antenna characteristics for downlink data reception; Determining second information based on the first information; the second information indicates resource mapping configuration; Sending the second information to the terminal.

2. The method according to claim 1, characterized in that, When the first information meets a first condition, the resource mapping configuration includes at least one of the following: A first mapping pattern; the first mapping pattern includes a pattern with a frequency-domain spreading factor greater than a time-domain spreading factor; A first mapping position; the first mapping position indicates resource elements of a channel state information reference signal resource at a first frequency-domain position and at a first time-domain position; Wherein, the first condition characterizes variable antenna characteristics.

3. The method according to claim 1, wherein When the first information meets a second condition, the resource mapping configuration includes at least one of the following: A second mapping pattern; the second mapping pattern includes a pattern with a frequency-domain spreading factor less than or equal to a time-domain spreading factor; A second mapping position; the second mapping position indicates resource elements of a channel state information reference signal resource at a second frequency-domain position and at a second time-domain position; Wherein, the second condition characterizes unchanging antenna characteristics.

4. The method according to claim 2, wherein When the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is greater than the number of subcarriers in a resource block of a channel state information reference signal resource, the resource mapping configuration is used to multiplex a first number of times in the frequency domain and a second number of times in the time domain to support a first number of antenna ports.

5. The method according to claim 4, wherein The first number of antenna ports is determined by the frequency-domain spreading factor, the time-domain spreading factor, the first number of times, and the second number of times.

6. The method according to claim 2, wherein When the product of the frequency-domain spreading factor and the frequency-domain multiplexing times is less than the number of subcarriers in a resource block of a channel state information reference signal resource, the resource mapping configuration is used to multiplex a third number of times in the frequency domain to support a second number of antenna ports.

7. The method according to claim 4, characterized in that The sending the second information to the terminal includes: Sending radio resource control signaling to the terminal, the radio resource control signaling includes the second information.

8. The method according to claim 4, characterized in that, The method further includes: Performing resource mapping on channel state information reference signals of the first number of antenna ports by using a channel state information reference signal resource defined by the resource mapping configuration; Sending the channel state information reference signal to the terminal.

9. A resource mapping method, characterized in that, Applied to a terminal, the method includes: Sending first information to a network device; the first information indicates the number of variable antenna characteristics for downlink data reception; Receiving second information sent by the network device; the second information indicates resource mapping configuration.

10. The method according to claim 9, characterized in that, When the first information meets a first condition, the resource mapping configuration includes at least one of the following: A first mapping pattern; the first mapping pattern includes a pattern with a frequency-domain spreading factor greater than a time-domain spreading factor; A first mapping position; the first mapping position indicates resource elements of a channel state information reference signal resource at a first frequency-domain position and at a first time-domain position; Wherein, the first condition characterizes variable antenna characteristics.

11. The method according to claim 9, characterized in that, When the first information meets a second condition, the resource mapping configuration includes at least one of the following: Second mapped image; the second mapping pattern includes a pattern with a frequency-domain spreading factor less than or equal to a time-domain spreading factor; Second mapping position; the second mapping position indicates resource elements of a channel state information reference signal resource at a second frequency-domain position and at a second time-domain position; wherein, the second condition characterizes that the antenna characteristics remain unchanged.

12. The method according to claim 9, wherein Receiving the second information sent by the network device includes: Receiving radio resource control signaling sent by the network device, the radio resource control signaling including the second information.

13. The method according to claim 9, wherein The method further includes: Receiving a channel state information reference signal sent by the network device.

14. A network device, characterized in that, including: A first communication interface and a first processor; wherein, The first communication interface is configured to receive first information sent by a terminal; The first information indicates the number of variable antenna characteristics for downlink data reception; The first processor is configured to determine second information based on the first information; the second information indicates a resource mapping configuration; The first communication interface is further configured to send the second information to the terminal.

15. A terminal, characterized in that, including: A second communication interface and a second processor; wherein, the second communication interface is configured to send first information to a network device; The first information indicates the number of variable antenna characteristics for downlink data reception; receiving second information sent by the network device; the second information indicates a resource mapping configuration.

16. A network device, characterized in that, including: A first processor and a first memory for storing a computer program capable of running on the processor, wherein, when the first processor is configured to run the computer program, it executes the steps of the method according to any one of claims 1 to 8.

17. A terminal, characterized in that, including: including: A second processor and a second memory for storing a computer program capable of running on the processor, wherein, when the second processor is configured to run the computer program, it executes the steps of the method according to any one of claims 9 to 13.

18. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8 or 9 to 13.

Images