WO2023155112A1 - 映射方法、装置、设备及存储介质 - Google Patents

映射方法、装置、设备及存储介质 Download PDF

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Publication number
WO2023155112A1
WO2023155112A1 PCT/CN2022/076709 CN2022076709W WO2023155112A1 WO 2023155112 A1 WO2023155112 A1 WO 2023155112A1 CN 2022076709 W CN2022076709 W CN 2022076709W WO 2023155112 A1 WO2023155112 A1 WO 2023155112A1
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Prior art keywords
mapping
dmrs
frequency domain
res
dmrs mapping
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PCT/CN2022/076709
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English (en)
French (fr)
Inventor
罗星熠
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北京小米移动软件有限公司
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Priority to CN202280000461.1A priority Critical patent/CN116918288A/zh
Priority to PCT/CN2022/076709 priority patent/WO2023155112A1/zh
Publication of WO2023155112A1 publication Critical patent/WO2023155112A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of mobile communication, and in particular to a mapping method, device, equipment and storage medium.
  • Type1 mapping method includes single symbol mapping and double symbol mapping
  • the single-symbol mapping in the Type1 mapping method supports a maximum of 4 antenna ports
  • the dual-symbol mapping in the Type1 mapping method supports a maximum of 8 antenna ports.
  • the Type2 mapping method also includes single-symbol mapping and double-symbol mapping.
  • the single-symbol mapping in the Type2 mapping method The mapping supports a maximum of 6 antenna ports, and the dual-symbol mapping in the Type2 mapping mode supports a maximum of 12 antenna ports.
  • MU-MIMO Multi-User Multiple-Input Multiple-Output, Multi-User Multiple-Input Multiple-Output
  • the embodiment of the present application provides a mapping method, device, equipment and storage medium, which expands more ways to determine the DMRS mapping mode, increases the number of supported orthogonal ports, and further improves the communication system capacity. Described technical scheme is as follows:
  • mapping method comprising:
  • the frequency domain reuse factor indicates the number of orthogonal ports supported by the frequency division multiplexing method in the basic unit, and the first number of resources in the DMRS mapping method Elements RE (Resource Element, resource element) belong to the same DMRS port, and the frequency domain reuse factor is greater than 2.
  • mapping method comprising:
  • mapping method comprising:
  • a DMRS mapping manner is determined according to multiple RBs (Resource Blocks, resource blocks), and the DMRS mapping manner uses the multiple RBs as a basic unit for mapping.
  • a mapping device comprising:
  • a determining module configured to determine a demodulation reference signal DMRS mapping method according to a frequency domain reuse factor, where the frequency domain reuse factor indicates the number of orthogonal ports supported by a frequency division multiplexing method in a basic unit, in the DMRS mapping method
  • the DMRS ports to which the resource elements RE of the first quantity belong are the same, and the frequency domain reuse factor is greater than 2.
  • a mapping device comprising:
  • the determination module determines the DMRS mapping mode according to the orthogonal mask of the preset order in the frequency domain, and the orthogonal mask of the preset order indicates the number of orthogonal DMRS ports supported in a CDM group.
  • a mapping device comprising:
  • a determining module configured to determine a DMRS mapping manner according to multiple RBs, and the DMRS mapping manner uses the multiple RBs as a basic unit for mapping.
  • a terminal includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein, the processor is configured to load and execute executable instructions. Instructions are executed to implement the mapping method or mapping method as in the above aspects.
  • a network device includes: a processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; wherein the processor is configured to load and Executable instructions are executed to implement the mapping method as described above.
  • a computer-readable storage medium is provided.
  • Executable program codes are stored in the readable storage medium, and the executable program codes are loaded and executed by a processor to implement the mapping method as described above or implement such as Mapping methods for the above aspects.
  • a chip is provided, the chip includes programmable logic circuits and/or program instructions, and when the chip is run on a terminal or a network device, it is used to implement the mapping method of the above aspect or to implement the above aspect The mapping method.
  • a computer program product is provided.
  • the computer program product When the computer program product is executed by a processor of a terminal or a network device, it is used to implement the mapping method of the above aspect or realize the mapping method of the above aspect.
  • mapping scheme by adjusting the frequency domain reuse factor to determine the DMRS mapping mode, more ways to determine the DMRS mapping mode are expanded, and increasing the frequency domain reuse factor can reduce the number of REs serving the same port , that is, the number of supported orthogonal ports can be increased, thereby increasing the communication system capacity.
  • Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application
  • FIG. 2 shows a flowchart of a mapping method provided by an exemplary embodiment of the present application
  • FIG. 3 shows a flowchart of another mapping method provided by an exemplary embodiment of the present application
  • FIG. 4 shows a schematic diagram of a mapping method provided by an exemplary embodiment of the present application
  • Fig. 5 shows a schematic diagram of another mapping manner provided by an exemplary embodiment of the present application.
  • FIG. 6 shows a schematic diagram of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 7 shows a schematic diagram of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 8 shows a flowchart of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 9 shows a schematic diagram of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 10 shows a flowchart of another mapping method provided by an exemplary embodiment of the present application.
  • Fig. 11 shows a schematic diagram of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 12 shows a flowchart of another mapping method provided by an exemplary embodiment of the present application.
  • Fig. 13 shows a schematic diagram of another mapping method provided by an exemplary embodiment of the present application.
  • FIG. 14 shows a block diagram of a mapping device provided by an exemplary embodiment of the present application.
  • Fig. 15 shows a block diagram of another mapping device provided by an exemplary embodiment of the present application.
  • Fig. 16 shows a block diagram of another mapping device provided by an exemplary embodiment of the present application.
  • Fig. 17 shows a block diagram of another mapping device provided by an exemplary embodiment of the present application.
  • Fig. 18 shows a block diagram of another mapping device provided by an exemplary embodiment of the present application.
  • Fig. 19 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • first, second, third, etc. may be used in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the present application, first information may also be called second information, and similarly, second information may also be called first information. Depending on the context, for example, the word “if” as used herein could be interpreted as “at” or “when” or “in response to a determination.”
  • FIG. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present application.
  • the communication system may include: a terminal 10 and a network device 20 .
  • the terminal 10 may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem, as well as various forms of user equipment (User Equipment, UE), mobile station ( Mobile Station, MS) and so on.
  • UE User Equipment
  • MS Mobile Station
  • the network device 20 is a device deployed in an access network to provide a wireless communication function for the terminal 10 .
  • the above-mentioned devices that provide the wireless communication function for the terminal 10 are collectively referred to as network devices.
  • a connection can be established between the network device 20 and the terminal 10 through an air interface, so as to communicate through the connection, including signaling and data interaction.
  • the number of network devices 20 may be multiple, and communication between two adjacent network devices 20 may also be performed in a wired or wireless manner.
  • the terminal 10 can switch between different network devices 20 , that is, establish connections with different network devices 20 .
  • the network device 20 may include various forms of macro base stations, micro base stations, relay stations, access points and so on.
  • the names of devices with network device functions may be different.
  • they are called gNodeB or gNB.
  • the term "network equipment" may change as communications technology evolves.
  • Fig. 2 shows a flowchart of a mapping method provided by an exemplary embodiment of the present application, which can be applied to the terminal shown in Fig. 1, and the method includes at least some of the following contents:
  • Step 201 The terminal determines the DMRS mapping method according to the frequency domain reuse factor, the frequency domain reuse factor indicates the number of orthogonal ports supported by the frequency division multiplexing method in the basic unit, and the DMRS port to which the first number of REs belong in the DMRS mapping method Likewise, the frequency domain reuse factor is greater than 2.
  • the terminal may determine a DMRS mapping manner, and then receive the DMRS according to the determined DMRS mapping manner to perform channel estimation.
  • the terminal obtains the frequency domain reuse factor, and the frequency domain reuse factor indicates the number of orthogonal ports supported by the frequency division multiplexing method in the basic unit.
  • the DMRS ports to which the first number of REs belong to the same in the DMRS mapping method Then the terminal can determine the DMRS mapping manner based on the frequency domain reuse factor.
  • the DMRS mapping method supports multiple orthogonal DMRS ports, and if the frequency domain reuse factor is increased, the first number of REs serving the same DMRS port will be reduced, and the same number of REs can serve more DMRS ports, increase the number of orthogonal DMRS ports supported.
  • the DMRS mapping manner is single-symbol mapping, or, the DMRS mapping manner is dual-symbol mapping.
  • the single-symbol mapping refers to that the DMRS mapping method uses one symbol as a unit for mapping.
  • the double-symbol mapping indicates that the DMRS mapping method uses two symbols as a unit for mapping.
  • the DMRS mapping manner is continuous mapping, or the DMRS mapping manner is discontinuous mapping.
  • the continuous mapping means that the frequency domains occupied by any two REs in the first number of REs are adjacent, and the discontinuous mapping means that the frequency domains occupied by any two REs in the first number of REs are not adjacent.
  • the frequency domain reuse factor used to determine the DMRS mapping method is greater than 2. Compared with the frequency domain reuse factor of 2, the number of orthogonal DMRS ports supported is greatly improved, thereby improving the communication efficiency based on the DMRS port. system capacity.
  • the embodiment of the present application is only described by taking the terminal determining the DMRS mapping manner as an example.
  • the network device also needs to determine the DMRS mapping mode, and the determination process is similar to the terminal determination process, which will not be repeated here.
  • FIG. 3 shows a flowchart of a mapping method provided in an exemplary embodiment of the present application, referring to Figure 3, the method includes:
  • Step 301 The network device sends DMRS mapping indication signaling to the terminal, where the DMRS mapping indication signaling indicates a DMRS mapping manner.
  • Step 302 The terminal receives the DMRS mapping indication signaling sent by the network device.
  • the DMRS mapping indication signaling includes first indication information of whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling includes the first indication information, and then according to the first indication information, it can be determined whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling is DCI (Downlink Control Information, downlink control information) signaling.
  • the DMRS mapping indication signaling also includes second indication information of whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the DMRS mapping indication signaling includes the second indication information, and according to the second indication information, it can be determined whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the DMRS mapping signaling is RRC (Radio Resource Control, radio resource control) signaling.
  • the content of the above DMRS mapping indication signaling includes but not limited to first indication information and second indication information.
  • steps performed by the network device may form an embodiment alone, and the steps performed by the terminal may also form an embodiment alone, which is not limited in this application.
  • the DMRS mapping method uses one RB as a basic unit for mapping, and the DMRS mapping method indicates that the DMRS ports to which the first number of REs belong to the same in one RB.
  • the DMRS mapping mode when the terminal determines the DMRS mapping mode, the DMRS mapping mode is mapped with one RB, which means that the DMRS mapping mode uses one RB as a cycle, and then performs mapping sequentially.
  • the frequency domain reuse factor is 3, or, the frequency domain reuse factor is 6.
  • the first number is a ratio of the number of subbands included in one RB to the frequency domain reuse factor.
  • the first number refers to the number of REs serving the same DMRS port, that is, the number of REs of different DMRS ports is the first number, and the number of subbands included in one RB is the same, Therefore, the ratio of the number of subbands included in the RB to the number of frequency domain reuse factors is taken as the first number.
  • the determined first number is 4.
  • the frequency domain reuse factor is 3
  • the DMRS mapping mode is single-symbol mapping and discontinuous mapping
  • the DMRS mapping mode takes one RB as a basic unit for mapping as an example for description.
  • the first number in the DMRS mapping manner is 4, that is, every 4 REs serve one DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r (.) represents the sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask in this mapping method is a 2-order Walsh (a sequence) sequence, and it is a single symbol mapping.
  • the Walsh sequence indicates that the number of ports supporting orthogonality in the frequency domain is 2, and it is a single symbol Mapping, the ports of the REs at the same position in the RB are in the same CDM group. That is, in Figure 4, the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 6. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 12.
  • the frequency domain reuse factor is 6
  • the DMRS mapping mode is single symbol mapping and continuous mapping
  • the DMRS mapping mode uses one RB as a basic unit for mapping as an example for illustration.
  • the first number in the DMRS mapping manner is 2, that is, every 2 REs serve a DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask is a 2nd-order Walsh sequence, and it is a single-symbol mapping, and the ports of the REs at the same position in the RB are in the same CDM group. That is to say, in Fig. 5, the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 12, and if other conditions remain unchanged, If the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 24.
  • the frequency domain reuse factor is 6
  • the DMRS mapping mode is single symbol mapping and discontinuous mapping
  • the DMRS mapping mode takes one RB as a basic unit for mapping as an example for illustration.
  • the first number in the DMRS mapping manner is 2, that is, every 2 REs serve a DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask is a 2nd-order Walsh sequence, and it is a single-symbol mapping, and the ports of the REs at the same position in the RB are in the same CDM group. That is to say, in Fig. 6, the ports (patterns) in the same CDM group share the same time-frequency resources through code division multiplexing, and the number of orthogonal DMRS ports supported is 12, and if other conditions remain unchanged, the mapping If the mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 24.
  • the DMRS mapping method uses multiple RBs as a basic unit for mapping, and the DMRS mapping method indicates that the DMRS ports to which the second number of REs belong to the same in the multiple RBs.
  • the DMRS mapping method uses multiple RBs as a basic unit for mapping, that is to say, the DMRS mapping method uses multiple RBs as a cycle, and then performs mapping sequentially.
  • the DMRS mapping manner may use 2 RBs as a basic unit for mapping, or use 4 RBs as a basic unit for mapping, or use other numbers of RBs as a basic unit for mapping.
  • the frequency domain reuse factor in the embodiment of the present application is 4.
  • the second number is a ratio of the number of subbands included in the plurality of RBs to the frequency domain reuse factor.
  • the second number refers to the number of REs serving the same DMRS port in multiple RBs, which means that the number of REs of different DMRS ports is the second number, and the number of REs included in multiple RBs
  • the number of subbands is the same, so the ratio of the number of subbands included in the multiple RBs to the number of frequency domain reuse factors is used as the second number.
  • the DMRS mapping method uses 2 RBs as the basic unit for mapping, and the number of subbands included in the 2 RBs is 24, and the frequency domain reuse factor is 4, then the determined second number is 6.
  • the frequency domain reuse factor is 4, the DMRS mapping mode is single-symbol mapping and non-continuous mapping, and the DMRS mapping mode uses 2 RBs as basic units for mapping as an example.
  • the second number in the DMRS mapping manner is 6, that is, every 6 REs serve one DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask is a 2nd-order Walsh sequence, and it is a single-symbol mapping, and the ports of the REs at the same position in the two RBs are in the same CDM group. That is, in FIG. 7, the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 8. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 16.
  • the method includes:
  • Step 801 The terminal or network device determines the DMRS mapping method according to the orthogonal mask of the preset order in the frequency domain and the frequency domain reuse factor, and the orthogonal mask of the preset order indicates the supported in a CDM group Orthogonal number of DMRS ports.
  • an orthogonal mask with a preset order is introduced in the frequency domain, and the number of supported orthogonal DMRS ports can be increased by increasing the preset order of the orthogonal mask, and for terminals and For the network equipment, the DMRS mapping mode can be determined according to the orthogonal mask of the preset order in the frequency domain and the frequency domain reuse factor.
  • the orthogonality mask of the preset order indicates the maximum number of orthogonal DMRS ports supported in the frequency domain.
  • the orthogonal mask is represented by a Walsh (a sequence) sequence.
  • the preset order is 4, or, the preset order is 8.
  • the frequency domain reuse factor is 3
  • the DMRS mapping method is single-symbol mapping and discontinuous mapping
  • the DMRS mapping method uses 1 RB as a basic unit for mapping
  • the orthogonal mask is 4th order, as an example for illustration.
  • every 4 REs serve one DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask in this mapping method is a 4th-order Walsh sequence, and it is a single-symbol mapping, and the ports of the REs at the same position in the RB are in the same CDM group. That is, in FIG. 9, the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 12. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 24.
  • Fig. 10 shows a flowchart of a mapping method provided by an exemplary embodiment of the present application, which can be applied to a terminal or a network device as shown in Fig. 1, and the method includes at least some of the following contents:
  • Step 1001 The terminal or network device determines the DMRS mapping method according to the orthogonal mask of the preset order in the frequency domain, and the orthogonal mask of the preset order indicates the number of orthogonal DMRS ports supported in a CDM group .
  • the terminal or the network device may determine the DMRS mapping manner, and then receive the DMRS according to the determined DMRS mapping manner to perform channel estimation.
  • the terminal or the network device obtains the orthogonal mask with the preset order in the frequency domain, and then the terminal may determine the DMRS mapping mode based on the orthogonal mask with the preset order in the frequency domain.
  • the DMRS ports to which the resource elements RE of the first quantity belong are the same.
  • a default frequency domain reuse factor is used to determine the DMRS mapping manner, that is, the frequency domain reuse factor may indicate that the DMRS ports to which the first number of REs belong are the same.
  • the preset order is 4, or, the preset order is 8.
  • the DMRS mapping manner is single-symbol mapping, or, the DMRS mapping manner is dual-symbol mapping.
  • the single-symbol mapping refers to that the DMRS mapping method uses one symbol as a unit for mapping.
  • the double-symbol mapping indicates that the DMRS mapping method uses two symbols as a unit for mapping.
  • the DMRS mapping manner is continuous mapping, or the DMRS mapping manner is discontinuous mapping.
  • the continuous mapping means that the frequency domains occupied by any two REs in the first number of REs are adjacent, and the discontinuous mapping means that the frequency domains occupied by any two REs in the first number of REs are not adjacent.
  • the orthogonal mask used in the mapping method is a 4th-order Walsh sequence, and the frequency domain reuse factor adopts a default value of 2, and the DMRS mapping method is single-symbol mapping, then the RB The ports of the REs at the same location in the same CDM group belong to the same CDM group, and the maximum number of DMRS ports supported is 12. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 24.
  • the frequency domain reuse factor is 3
  • the DMRS mapping method is single symbol mapping and continuous mapping
  • the DMRS mapping method uses 1 RB as a basic unit for mapping
  • the orthogonal mask is 4th order, as an example for illustration.
  • every 4 REs serve one DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the DMRS port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask is a 4th-order Walsh sequence, and it is a single-symbol mapping, and the ports of the REs at the same position in the RB are in the same CDM group. That is, in FIG. 11 , the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 12. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 24.
  • the embodiment of the present application is only described by taking the terminal determining the DMRS mapping manner as an example.
  • the network device also needs to determine the DMRS mapping mode, and the determination process is similar to the terminal determination process, which will not be repeated here.
  • the network device determines the DMRS mapping mode, it also needs to send DMRS mapping indication signaling indicating the DMRS mapping mode to the terminal.
  • the network device sends DMRS mapping indication signaling to the terminal, where the DMRS mapping indication signaling indicates a DMRS mapping mode, and the terminal receives the DMRS mapping indication signaling sent by the network device.
  • the DMRS mapping indication signaling includes first indication information of whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling includes the first indication information, and then according to the first indication information, it can be determined whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling is DCI signaling.
  • the DMRS mapping indication signaling also includes second indication information of whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the DMRS mapping indication signaling includes the second indication information, and then according to the second indication information, it can be determined whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the DMRS mapping signaling is RRC signaling.
  • the content of the above DMRS mapping indication signaling includes but not limited to first indication information and second indication information.
  • steps performed by the network device may form an embodiment alone, and the steps performed by the terminal may also form an embodiment alone, which is not limited in this application.
  • the frequency domain reuse factor can determine the DMRS mapping mode by adjusting the preset order of the orthogonal mask in the frequency domain, expanding more DMRS mapping modes, and the orthogonal mask
  • the increase of the preset order can increase the number of supported orthogonal ports, thereby increasing the system capacity.
  • Fig. 12 shows a flowchart of a mapping method provided by an exemplary embodiment of the present application, which can be applied to a terminal or network device as shown in Fig. 1, and the method includes at least some of the following contents:
  • Step 1201 A terminal or a network device determines a DMRS mapping mode according to multiple RBs, and the DMRS mapping mode uses multiple RBs as a basic unit for mapping.
  • the second number is a default value, or is configured by a network device, or is configured in other ways.
  • the DMRS ports to which the second number of REs belong are the same.
  • a default frequency domain reuse factor is used to determine the DMRS mapping manner, that is, the frequency domain reuse factor can indicate that the DMRS ports to which the second number of REs belong are the same.
  • the DMRS mapping manner is single-symbol mapping, or, the DMRS mapping manner is dual-symbol mapping.
  • the single-symbol mapping refers to that the DMRS mapping method uses one symbol as a unit for mapping.
  • the double-symbol mapping indicates that the DMRS mapping method uses two symbols as a unit for mapping.
  • the DMRS mapping manner is continuous mapping, or the DMRS mapping manner is discontinuous mapping.
  • continuous mapping means that frequency domains occupied by any two REs in the second number of REs are adjacent, and discontinuous mapping means that frequency domains occupied by any two REs in the second number of REs are not adjacent.
  • the embodiment of the present application is only described by taking the terminal determining the DMRS mapping manner as an example.
  • the network device also needs to determine the DMRS mapping mode, and the determination process is similar to the terminal determination process, which will not be repeated here.
  • the network device After the network device determines the DMRS mapping mode, it also needs to send DMRS mapping indication signaling indicating the DMRS mapping mode to the terminal.
  • the network device sends DMRS mapping indication signaling to the terminal, and the DMRS mapping indication signaling indicates the DMRS mapping mode, and the terminal receives the DMRS mapping indication signaling sent by the network device, and then determines the DMRS mapping mode based on the received DMRS mapping indication signaling.
  • the DMRS mapping indication signaling includes first indication information of whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling includes the first indication information, and then according to the first indication information, it can be determined whether the DMRS mapping mode is single-symbol mapping or double-symbol mapping.
  • the DMRS mapping indication signaling is DCI signaling.
  • the DMRS mapping indication signaling also includes second indication information of whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the DMRS mapping indication signaling includes the second indication information, and according to the second indication information, it can be determined whether the DMRS mapping mode is continuous mapping or discontinuous mapping.
  • the content of the above DMRS mapping indication signaling includes but not limited to first indication information and second indication information.
  • the DMRS mapping signaling is RRC signaling.
  • steps performed by the network device may form an embodiment alone, and the steps performed by the terminal may also form an embodiment alone, which is not limited in this application.
  • the above embodiments of Fig. 11 and Fig. 12 can be combined to form a new embodiment.
  • the frequency domain reuse factor is 2
  • the DMRS mapping method is single-symbol mapping and discontinuous mapping
  • the DMRS mapping method uses 2 RBs as basic units for mapping
  • the orthogonal mask is 4th order as an example for illustration.
  • every 6 REs serve one DMRS port.
  • mapping formula of the DMRS mapping method is:
  • w f (.) is the orthogonal mask in the frequency domain
  • ⁇ t (.) is the orthogonal mask in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k' is the frequency domain index
  • l' is the time domain index
  • k represents the position of the RE in the frequency domain
  • l represents the position of the RE in the time domain
  • r(.) represents The generated pseudo-random sequence to be transmitted
  • n represents the index of the sequence to be transmitted
  • p represents the port
  • Indicates the symbol mapped to RE(k,l) indicates the position of RE in frequency domain and time domain.
  • CDM group ⁇ represents the group identifier to which each resource location that is a mapping relationship belongs to:
  • the orthogonal mask is a 4th-order Walsh sequence, and it is a single-symbol mapping, so the ports of the REs at the same position in the RB are in the same CDM group. That is, in Fig. 13, the ports (patterns) in the same CDM group share the same time-frequency resource through code division multiplexing, and the maximum number of supported orthogonal DMRS ports is 8. However, if other conditions remain unchanged and the mapping mode is double-symbol mapping, the maximum number of supported orthogonal DMRS ports is 16.
  • Figure 14 shows a block diagram of a mapping device provided by an exemplary embodiment of the present application, referring to Figure 3, the device includes:
  • the determination module 1401 is configured to determine the DMRS mapping mode of the demodulation reference signal according to the frequency domain reuse factor, the frequency domain reuse factor indicates the number of orthogonal ports supported by the frequency division multiplexing mode in the basic unit, and the first number in the DMRS mapping mode The DMRS ports to which the resource elements RE belong to are the same, and the frequency domain reuse factor is greater than 2.
  • the DMRS mapping manner is single-symbol mapping, or the DMRS mapping manner is dual-symbol mapping.
  • the DMRS mapping mode is continuous mapping, or the DMRS mapping mode is non-continuous mapping
  • the continuous mapping means that the frequency domains occupied by any two REs in the first number of REs are adjacent, and the discontinuous mapping means that the frequency domains occupied by any two REs in the first number of REs are not adjacent.
  • the DMRS mapping mode uses a physical resource block (RB) as a basic unit for mapping, and the DMRS mapping mode indicates that the DMRS ports to which the first number of REs in one RB belong are the same.
  • RB physical resource block
  • the frequency domain reuse factor is 3, or the frequency domain reuse factor is 6.
  • the first number is a ratio of the number of subbands included in one RB to the frequency domain reuse factor.
  • the DMRS mapping manner uses multiple RBs as a basic unit for mapping, and the DMRS mapping manner indicates that the DMRS ports to which the second number of REs belong to the same within the multiple RBs.
  • the frequency domain reuse factor is four.
  • the second number is a ratio of the number of subbands included in the plurality of RBs to the frequency domain reuse factor.
  • the determination module 1401 is configured to determine the DMRS mapping method according to the orthogonal mask of the preset order in the frequency domain and the frequency domain reuse factor, and the orthogonal mask of the preset order indicates that in a CDM The number of orthogonal DMRS ports supported in the group.
  • the preset order is 4, or the preset order is 8.
  • the device further includes:
  • the receiving module 1501 is configured to receive DMRS mapping indication signaling sent by a network device, where the DMRS mapping indication signaling indicates a DMRS mapping manner.
  • the device further includes:
  • the sending module 1601 is configured to send DMRS mapping indication signaling to the terminal, where the DMRS mapping indication signaling indicates a DMRS mapping manner.
  • the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to the needs.
  • the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the device and the method embodiment provided by the above embodiment belong to the same idea, and the specific implementation process thereof is detailed in the method embodiment, and will not be repeated here.
  • Fig. 17 shows a block diagram of a mapping device provided by an exemplary embodiment of the present application. Referring to Fig. 17, the device includes:
  • the determination module 1701 is configured to determine the DMRS mapping mode according to the orthogonal mask of the preset order in the frequency domain, and the orthogonal mask of the preset order indicates the number of orthogonal DMRS ports supported in a CDM group.
  • the DMRS mapping manner is single-symbol mapping, or the DMRS mapping manner is dual-symbol mapping.
  • the DMRS mapping mode is continuous mapping, or the DMRS mapping mode is non-continuous mapping
  • the continuous mapping means that the frequency domains occupied by any two REs in the first number of REs are adjacent, and the discontinuous mapping means that the frequency domains occupied by any two REs in the first number of REs are not adjacent.
  • the preset order is 4, or the preset order is 8.
  • the DMRS ports to which the first number of REs belong are the same.
  • the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to the needs.
  • the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the device and the method embodiment provided by the above embodiment belong to the same idea, and the specific implementation process thereof is detailed in the method embodiment, and will not be repeated here.
  • Fig. 18 shows a block diagram of a mapping device provided by an exemplary embodiment of the present application. Referring to Fig. 18, the device includes:
  • the determining module 1801 is configured to determine a DMRS mapping mode according to multiple RBs, and the DMRS mapping mode uses multiple RBs as a basic unit for mapping.
  • the DMRS mapping manner is single-symbol mapping, or the DMRS mapping manner is dual-symbol mapping.
  • the DMRS mapping mode is continuous mapping, or the DMRS mapping mode is non-continuous mapping
  • continuous mapping means that frequency domains occupied by any two REs in the second number of REs are adjacent, and discontinuous mapping means that frequency domains occupied by any two REs in the second number of REs are not adjacent.
  • the DMRS ports to which the second number of resource elements RE belong are the same.
  • the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to the needs.
  • the internal structure of the device is divided into different functional modules to complete all or part of the functions described above.
  • the device and the method embodiment provided by the above embodiment belong to the same idea, and the specific implementation process thereof is detailed in the method embodiment, and will not be repeated here.
  • FIG. 19 shows a schematic structural diagram of a communication device provided by an exemplary embodiment of the present application.
  • the communication device includes: a processor 1901 , a receiver 1902 , a transmitter 1903 , a memory 1904 and a bus 1905 .
  • the processor 1901 includes one or more processing cores, and the processor 1901 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1902 and the transmitter 1903 can be implemented as a communication component, which can be a communication chip.
  • the memory 1904 is connected to the processor 1901 through the bus 1905 .
  • the memory 1904 may be used to store at least one program code, and the processor 1901 is used to execute the at least one program code, so as to implement various steps in the foregoing method embodiments.
  • the communication device may be a terminal or a network device.
  • the memory 1904 can be implemented by any type of volatile or non-volatile storage device or their combination.
  • the volatile or non-volatile storage device includes but not limited to: magnetic disk or optical disk, electrically erasable programmable read-only Memory (EEPROM), Erasable Programmable Read Only Memory (EPROM), Static Anytime Access Memory (SRAM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read Only Memory (PROM).
  • a computer-readable storage medium is also provided, and executable program code is stored in the readable storage medium, and the executable program code is loaded and executed by a processor to implement the implementation of each of the above methods.
  • a chip in an exemplary embodiment, includes a programmable logic circuit and/or program instructions, and when the chip is run on a terminal or a network device, it is used to implement the method as provided in each method embodiment. mapping method.
  • a computer program product is provided, and when the computer program product is executed by a processor of a terminal or a network device, it is used to implement the mapping method provided by each method embodiment above.
  • the program can be stored in a computer-readable storage medium.
  • the above-mentioned The storage medium mentioned may be a read-only memory, a magnetic disk or an optical disk, and the like.

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Abstract

本申请公开了一种映射方法、装置、设备及存储介质，涉及移动通信领域。该方法包括：终端根据频域重用因子确定解调参考信号DMRS映射方式，所述频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，所述DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同，所述频域重用因子大于2，扩展了更多的确定DMRS映射方式的方式，并且增加频域重用因子可以减少服务同一个端口的RE的数量，也就是可以提高支持的正交的端口数，进而保证了系统的容量。

Description

映射方法、装置、设备及存储介质 技术领域
本申请涉及移动通信领域，特别涉及一种映射方法、装置、设备及存储介质。
背景技术
在移动通信技术中，提出了两种DMRS(Demodulation Reference Signal，解调参考信号)映射方式，分别为Type1(类型1)映射方式和Type2映射方式，Type1映射方式包括单符号映射和双符号映射，Type1映射方式中的单符号映射最大支持4个天线端口，Type1映射方式中的双符号映射最大支持8个天线端口，Type2映射方式也包括单符号映射和双符号映射，Type2映射方式中的单符号映射最大支持6个天线端口，Type2映射方式中的双符号映射最大支持12个天线端口。但是，目前移动通信技术中的DMRS映射方式较少，不支持更多用户的MU-MIMO(Multi-User Multiple-Input Multiple-Output，多用户-多输入多输出)以进一步提高系统容量。
发明内容
本申请实施例提供了一种映射方法、装置、设备及存储介质，扩展了更多的确定DMRS映射方式的方式，并提高支持的正交的端口数，进而提高了通信的系统容量。所述技术方案如下：
根据本申请的一个方面，提供了一种映射方法，所述方法包括：
根据频域重用因子确定解调参考信号DMRS映射方式，所述频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，所述DMRS映射方式中第一数量的资源元素RE(Resource Element，资源元素)所属的DMRS端口相同，所述频域重用因子大于2。
根据本申请的一个方面，提供了一种映射方法，所述方法包括：
根据在频域上预设阶数的正交掩码，确定DMRS映射方式，所述预设阶数的正交掩码指示在一个CDM(Code Division Multiplexing，码分复用)group(组) 内支持的正交的DMRS端口数量。
根据本申请的一个方面，提供了一种映射方法，所述方法包括：
根据多个RB(Resource Block，资源块)确定DMRS映射方式，所述DMRS映射方式以所述多个RB为基本单元进行映射。
根据本申请的一个方面，提供了一种映射装置，所述装置包括：
确定模块，用于根据频域重用因子确定解调参考信号DMRS映射方式，所述频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，所述DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同，所述频域重用因子大于2。
根据本申请的一个方面，提供了一种映射装置，所述装置包括：
确定模块，根据在频域上预设阶数的正交掩码，确定DMRS映射方式，所述预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
根据本申请的一个方面，提供了一种映射装置，所述装置包括：
确定模块，用于根据多个RB确定DMRS映射方式，所述DMRS映射方式以所述多个RB为基本单元进行映射。
根据本申请的一个方面，提供了一种终端，终端包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的映射方法或映射方法。
根据本申请的一个方面，提供了一种网络设备，网络设备包括：处理器；与处理器相连的收发器；用于存储处理器的可执行指令的存储器；其中，处理器被配置为加载并执行可执行指令以实现如上述方面的映射方法。
根据本申请的一个方面，提供了一种计算机可读存储介质，可读存储介质中存储有可执行程序代码，可执行程序代码由处理器加载并执行以实现如上述方面的映射方法或实现如上述方面的映射方法。
根据本申请的一个方面，提供了一种芯片，芯片包括可编程逻辑电路和/或程序指令，当芯片在终端或网络设备上运行时，用于实现如上述方面的映射方法或实现如上述方面的映射方法。
根据本申请的一个方面，提供了一种计算机程序产品，当计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述方面的映射方法或实现如上述方面的映射方法。
本申请实施例提供的映射方案中，通过调整频域重用因子以确定DMRS映 射方式，扩展了更多的确定DMRS映射方式的方式，并且增加频域重用因子可以减少服务同一个端口的RE的数量，也就是可以提高支持的正交的端口数，进而提高了通信的系统容量。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请一个示例性实施例提供的通信系统的框图；
图2示出了本申请一个示例性实施例提供的映射方法的流程图；
图3示出了本申请一个示例性实施例提供的另一种映射方法的流程图；
图4示出了本申请一个示例性实施例提供的映射方式的示意图；
图5示出了本申请一个示例性实施例提供的另一种映射方式的示意图；
图6示出了本申请一个示例性实施例提供的再一种映射方式的示意图；
图7示出了本申请一个示例性实施例提供的再一种映射方式的示意图；
图8示出了本申请一个示例性实施例提供的再一种映射方法的流程图；
图9示出了本申请一个示例性实施例提供的再一种映射方式的示意图；
图10示出了本申请一个示例性实施例提供的再一种映射方法的流程图；
图11示出了本申请一个示例性实施例提供的再一种映射方式的示意图；
图12示出了本申请一个示例性实施例提供的再一种映射方法的流程图；
图13示出了本申请一个示例性实施例提供的再一种映射方式的示意图；
图14示出了本申请一个示例性实施例提供的映射装置的框图；
图15示出了本申请一个示例性实施例提供的另一种映射装置的框图；
图16示出了本申请一个示例性实施例提供的另一种映射装置的框图；
图17示出了本申请一个示例性实施例提供的另一种映射装置的框图；
图18示出了本申请一个示例性实施例提供的另一种映射装置的框图；
图19示出了本申请一个示例性实施例提供的通信设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请 实施方式作进一步地详细描述。
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请的一些方面相一致的装置和方法的例子。
在本申请使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也是旨在包括多数形式，除非上下文清楚地表示其它含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，例如，在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面，对本申请的应用场景进行说明：
图1示出了本申请一个示例性实施例提供的通信系统的框图，该通信系统可以包括：终端10和网络设备20。
终端10的数量通常为多个，每一个网络设备20所管理的小区内可以分布一个或多个终端10。终端10可以包括各种具有无线通信功能的手持设备、车载设备、可穿戴设备、计算设备或连接到无线调制解调器的其它处理设备，以及各种形式的用户设备(User Equipment，UE)、移动台(Mobile Station，MS)等等。为方便描述，本申请实施例中，上面提到的设备统称为终端。
网络设备20是一种部署在接入网中用以为终端10提供无线通信功能的装置。为方便描述，本申请实施例中，上述为终端10提供无线通信功能的装置统称为网络设备。网络设备20与终端10之间可以通过空口建立连接，从而通过该连接进行通信，包括信令和数据的交互。网络设备20的数量可以有多个，两个邻近的网络设备20之间也可以通过有线或者无线的方式进行通信。终端10可以在不同的网络设备20之间进行切换，也即与不同的网络设备20建立连接。
该网络设备20可以包括各种形式的宏基站，微基站，中继站，接入点等等。 在采用不同的无线接入技术的系统中，具备网络设备功能的设备的名称可能会有所不同，例如在5G NR系统中，称为gNodeB或者gNB。随着通信技术的演进，“网络设备”这一名称可能会变化。
图2示出了本申请一个示例性实施例提供的映射方法的流程图，示例性的可以应用于如图1所示的终端中，该方法包括以下内容中的至少部分内容：
步骤201：终端根据频域重用因子确定DMRS映射方式，频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，DMRS映射方式中第一数量的RE所属的DMRS端口相同，频域重用因子大于2。
在本申请实施例中，终端可以确定DMRS映射方式，进而根据确定的DMRS映射方式接收DMRS以进行信道估计。其中，终端获取频域重用因子，该频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，另外，DMRS映射方式中第一数量的RE所属的DMRS端口相同，则终端可以基于该频域重用因子确定DMRS映射方式。其中，该DMRS映射方式支持多个正交的DMRS端口，并且，若提高该频域重用因子，则服务相同的DMRS端口的RE的第一数量会减少，则相同数量的RE可以服务更多的DMRS端口，提高支持的正交的DMRS端口的数量。
在一些实施例中，DMRS映射方式为单符号映射，或者，该DMRS映射方式为双符号映射。
其中，该单符号映射是指DMRS映射方式是以一个符号为单位进行映射。双符号映射指示DMRS映射方式是以两个符号为单位进行映射。
在一些实施例中，DMRS映射方式为连续映射，或者，该DMRS映射方式为非连续映射。
其中，连续映射是指第一数量的RE中任两个RE所占的频域相邻，非连续映射是指第一数量的RE中任两个RE所占的频域不相邻。
本申请实施例中用于确定DMRS映射方式的频域重用因子大于2，相对于频域重用因子为2时，支持的正交的DMRS端口的数量大幅度提升，进而提高基于DMRS端口进行通信的系统容量。
需要说明的是，本申请实施例仅是以终端确定DMRS映射方式为例进行说明。在另一实施例中，网络设备也需要确定DMRS映射方式，确定过程与终端确定过程类似，在此不再赘述。
另外，网络设备确定DMRS映射方式后，还需要向终端发送指示DMRS映射方式的DMRS映射指示信令。图3示出了本申请一个示例性实施例提供的映射方法的流程图，参见图3，该方法包括：
步骤301：网络设备向终端发送DMRS映射指示信令，该DMRS映射指示信令指示DMRS映射方式。
步骤302：终端接收网络设备发送的DMRS映射指示信令。
其中，该DMRS映射指示信令中包括DMRS映射方式是单符号映射还是双符号映射的第一指示信息。该DMRS映射指示信令中包括第一指示信息，则根据该第一指示信息即可确定DMRS映射方式是单符号映射还是双符号映射。
可选地，该DMRS映射指示信令为DCI(Downlink Control Information，下行控制信息)信令。
另外，该DMRS映射指示信令中还包括DMRS映射方式是连续映射还是非连续映射的第二指示信息。该DMRS映射指示信令中包括第二指示信息，则根据该第二指示信息即可确定DMRS映射方式是连续映射还是非连续映射。
可选地，该DMRS映射信令为RRC(Radio Resource Control，无线资源控制)信令。
上述DMRS映射指示信令的内容包括但不限于第一指示信息和第二指示信息。
需要说明的是，网络设备所执行的步骤可以单独形成一个实施例，终端所执行的步骤也可以单独形成一个实施例，本申请对此不作限定。
本申请实施例提供方案中，通过调整频域重用因子以确定DMRS映射方式，扩展了更多的确定DMRS映射方式的方式，并且增加频域重用因子可以减少属于同一个DMRS端口的RE的数量，也就是可以提高支持的正交的端口数，进而提高了系统容量。
在图2所示的实施例的基础上，DMRS映射方式以一个RB为基本单元进行映射，则DMRS映射方式表示在一个RB内第一数量的RE所属的DMRS端口相同。
在本申请实施例中，终端在确定DMRS映射方式时，该DMRS映射方式是以一个RB进行映射，也就是说明DMRS映射方式是以一个RB为循环，进而依次进行映射。
在一些实施例中，该频域重用因子为3，或者，该频域重用因子为6。
在一些实施例中，第一数量为1个RB中包括的子带的数量与频域重用因子的比值。
在本申请实施例中，该第一数量是指服务相同的DMRS端口的RE的数量，也就是说明不同DMRS端口的RE的数量均为第一数量，并且一个RB内包括的子带数量相同，因此将该RB中包括的子带的数量与频域重用因子的数量的比值作为第一数量。
例如，1个RB中包括的子带的数量为12，频域重用因子为3，则确定的第一数量为4。
下面，以频域重用因子为3，DMRS映射方式为单符号映射、非连续映射且该DMRS映射方式以一个RB为基本单元进行映射为例进行说明。
在本申请实施例中，该DMRS映射方式中第一数量为4，也就是每4个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000001
其中，
Figure PCTCN2022076709-appb-000002
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000003
为DMRS在一个slot(时隙)中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000004
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表1，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表1
Figure PCTCN2022076709-appb-000005
Figure PCTCN2022076709-appb-000006
参见图4，该映射方式中正交掩码为2阶Walsh(一种序列)序列，并且为单符号映射，该Walsh序列表示在频域上支持正交的端口数为2，并且为单符号映射，在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图4中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数最大为6。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为12。
下面，以频域重用因子为6，DMRS映射方式为单符号映射、连续映射且该DMRS映射方式以一个RB为基本单元进行映射为例进行说明。
在本申请实施例中，该DMRS映射方式中第一数量为2，也就是每2个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000007
其中，
Figure PCTCN2022076709-appb-000008
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000009
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上 的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000010
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表2，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表2
Figure PCTCN2022076709-appb-000011
参见图5，该映射方式中正交掩码为2阶Walsh序列，并且为单符号映射，在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图5中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数最大为12，而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为24。
下面，以频域重用因子为6，DMRS映射方式为单符号映射、非连续映射且该DMRS映射方式以一个RB为基本单元进行映射为例进行说明。
在本申请实施例中，该DMRS映射方式中第一数量为2，也就是每2个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000012
其中，
Figure PCTCN2022076709-appb-000013
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000014
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000015
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表3，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表3
Figure PCTCN2022076709-appb-000016
Figure PCTCN2022076709-appb-000017
参见图6，该映射方式中正交掩码为2阶Walsh序列，并且为单符号映射，在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图6中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数为12，而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为24。
在图2所示的实施例的基础上，DMRS映射方式以多个RB为基本单元进行映射，则DMRS映射方式表示在多个RB内第二数量的RE所属的DMRS端口相同。
在本申请实施例中，终端在确定DMRS映射方式时，该DMRS映射方式是以多个RB为基本单元进行映射，也就是说明DMRS映射方式是以多个RB为循环，进而依次进行映射。
例如，DMRS映射方式可以以2个RB为基本单元进行映射，或者，以4个RB为基本单元进行映射，或者采用其他数量的RB为基本单元进行映射。
在一些实施例中，本申请实施例中的频域重用因子为4。
在一些实施例中，第二数量为多个RB中包括的子带的数量与频域重用因子的比值。
在本申请实施例中，该第二数量是指多个RB内服务相同的DMRS端口的RE的数量，也就是说明不同DMRS端口的RE的数量均为第二数量，并且多个RB内包括的子带数量相同，因此将这多个RB中包括的子带的数量与频域重用因子的数量的比值作为第二数量。
例如，该DMRS映射方式是以2个RB为基本单元进行的映射，而2个RB中包括的子带的数量为24，频域重用因子为4，则确定的第二数量为6。
下面，以频域重用因子为4，DMRS映射方式为单符号映射、非连续映射且 该DMRS映射方式以2个RB为基本单元进行映射为例进行说明。
在本申请实施例中，该DMRS映射方式中第二数量为6，也就是每6个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000018
其中，
Figure PCTCN2022076709-appb-000019
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000020
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000021
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表4，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表4
Figure PCTCN2022076709-appb-000022
Figure PCTCN2022076709-appb-000023
参见图7，该映射方式中正交掩码为2阶Walsh序列，并且为单符号映射，在两个RB中位于相同位置的RE的端口同处于一个CDM group。也就是图7中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数最大为8。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为16。
在图2所示的实施例的基础上，确定DMRS映射方式时不仅需要考虑频域重用因子，还需要考虑在频域上引入的预设阶数的正交掩码。参见图8，该方法包括：
步骤801：终端或者网络设备根据在频域上预设阶数的正交掩码和频域重用因子，确定DMRS映射方式，该预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
在本申请实施例中，在频域上引入预设阶数的正交掩码，则通过提高正交掩码的预设阶数可以提高支持的正交的DMRS端口的数量，而对于终端和网络设备来说，根据在频域上预设阶数的正交掩码和频域重用因子，可以确定DMRS映射方式。
其中，预设阶数的正交掩码指示在频域上支持的正交的最大DMRS端口数。
在一些实施例中，该正交掩码采用Walsh(一种序列)序列表示。
在一些实施例中，该预设阶数为4，或者，该预设阶数为8。
下面，以频域重用因子为3，DMRS映射方式为单符号映射、非连续映射且该DMRS映射方式以1个RB为基本单元进行映射，正交掩码为4阶，为例进行说明。
在本申请实施例中，该DMRS映射方式中每4个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000024
其中，
Figure PCTCN2022076709-appb-000025
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000026
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000027
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表5，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表5
Figure PCTCN2022076709-appb-000028
Figure PCTCN2022076709-appb-000029
参见图9，该映射方式中正交掩码为4阶Walsh序列，并且为单符号映射，在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图9中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数最大为12。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为24。
图10示出了本申请一个示例性实施例提供的映射方法的流程图，示例性的可以应用于如图1所示的终端或网络设备中，该方法包括以下内容中的至少部分内容：
步骤1001：终端或网络设备根据在频域上预设阶数的正交掩码，确定DMRS映射方式，预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
在本申请实施例中，终端或网络设备可以确定DMRS映射方式，进而根据确定的DMRS映射方式接收DMRS以进行信道估计。其中，终端或网络设备获取在频域上预设阶数的正交掩码，则终端可以基于该在频域上预设阶数的正交掩码确定DMRS映射方式。
在一些实施例中，DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同。本申请实施例通过默认的频域重用因子来确定DMRS映射方式，也就是通过该频域重用因子可以指示第一数量的RE所属的DMRS端口相同。
在一些实施例中，该预设阶数为4，或者，该预设阶数为8。
在一些实施例中，DMRS映射方式为单符号映射，或者，该DMRS映射方式为双符号映射。
其中，该单符号映射是指DMRS映射方式是以一个符号为单位进行映射。双符号映射指示DMRS映射方式是以两个符号为单位进行映射。
在一些实施例中，DMRS映射方式为连续映射，或者，该DMRS映射方式为非连续映射。
其中，连续映射是指第一数量的RE中任两个RE所占的频域相邻，非连续映射是指第一数量的RE中任两个RE所占的频域不相邻。
例如，参见上述实施例中的图9，映射方式中采用的正交掩码为4阶Walsh序列，而频域重用因子采用的默认值为2，并且DMRS映射方式为单符号映射，则在RB中位于相同位置的RE的端口同处于一个CDM group，并且支持的DMRS端口数最大为12。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为24。
另外，以频域重用因子为3，DMRS映射方式为单符号映射、连续映射且该DMRS映射方式以1个RB为基本单元进行映射，正交掩码为4阶，为例进行说明。
在本申请实施例中，该DMRS映射方式中每4个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000030
其中，
Figure PCTCN2022076709-appb-000031
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000032
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示DMRS端口，
Figure PCTCN2022076709-appb-000033
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表6，示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表6
Figure PCTCN2022076709-appb-000034
Figure PCTCN2022076709-appb-000035
参见图11，该映射方式中正交掩码为4阶Walsh序列，并且为单符号映射，在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图11中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资源，并且支持的正交的DMRS端口数最大为12。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为24。
需要说明的是，本申请实施例仅是以终端确定DMRS映射方式为例进行说明。在另一实施例中，网络设备也需要确定DMRS映射方式，确定过程与终端确定过程类似，在此不再赘述。
另外，网络设备确定DMRS映射方式后，还需要向终端发送指示DMRS映射方式的DMRS映射指示信令。网络设备向终端发送DMRS映射指示信令，该DMRS映射指示信令指示DMRS映射方式，终端接收网络设备发送的DMRS映射指示信令。
其中，该DMRS映射指示信令中包括DMRS映射方式是单符号映射还是双符号映射的第一指示信息。该DMRS映射指示信令中包括第一指示信息，则根据该第一指示信息即可确定DMRS映射方式是单符号映射还是双符号映射。
可选地，该DMRS映射指示信令为DCI信令。
另外，该DMRS映射指示信令中还包括DMRS映射方式是连续映射还是非连续映射的第二指示信息。该DMRS映射指示信令中包括第二指示信息，则根 据该第二指示信息即可确定DMRS映射方式是连续映射还是非连续映射。
可选地，该DMRS映射信令为RRC信令。
上述DMRS映射指示信令的内容包括但不限于第一指示信息和第二指示信息。
需要说明的是，网络设备所执行的步骤可以单独形成一个实施例，终端所执行的步骤也可以单独形成一个实施例，本申请对此不作限定。
本申请实施例提供方案中，该频域重用因子可以通过调整在频域上正交掩码的预设阶数以确定DMRS映射方式，扩展了更多的DMRS映射方式，并且正交掩码的预设阶数增加，可以提高支持的正交的端口数，进而提高的系统容量。
图12示出了本申请一个示例性实施例提供的映射方法的流程图，示例性的可以应用于如图1所示的终端或网络设备中，该方法包括以下内容中的至少部分内容：
步骤1201：终端或网络设备根据多个RB确定DMRS映射方式，DMRS映射方式以多个RB为基本单元进行映射。
在本申请实施例中，第二数量为默认数值，或者由网络设备配置，或者采用其他方式配置。
在一些实施例中，DMRS映射方式中第二数量的RE所属的DMRS端口相同。本申请实施例通过默认的频域重用因子来确定DMRS映射方式，也就是通过该频域重用因子可以指示第二数量的RE所属的DMRS端口相同。
在一些实施例中，DMRS映射方式为单符号映射，或者，该DMRS映射方式为双符号映射。
其中，该单符号映射是指DMRS映射方式是以一个符号为单位进行映射。双符号映射指示DMRS映射方式是以两个符号为单位进行映射。
在一些实施例中，DMRS映射方式为连续映射，或者，该DMRS映射方式为非连续映射。
其中，连续映射是指第二数量的RE中任两个RE所占的频域相邻，非连续映射是指第二数量的RE中任两个RE所占的频域不相邻。
需要说明的是，本申请实施例仅是以终端确定DMRS映射方式为例进行说明。在另一实施例中，网络设备也需要确定DMRS映射方式，确定过程与终端 确定过程类似，在此不再赘述。
另外，网络设备确定DMRS映射方式后，还需要向终端发送指示DMRS映射方式的DMRS映射指示信令。其中，网络设备向终端发送DMRS映射指示信令，该DMRS映射指示信令指示DMRS映射方式，终端接收网络设备发送的DMRS映射指示信令，进而基于接收的DMRS映射指示信令确定DMRS映射方式。
其中，该DMRS映射指示信令中包括DMRS映射方式是单符号映射还是双符号映射的第一指示信息。该DMRS映射指示信令中包括第一指示信息，则根据该第一指示信息即可确定DMRS映射方式是单符号映射还是双符号映射。
可选地，该DMRS映射指示信令为DCI信令。
另外，该DMRS映射指示信令中还包括DMRS映射方式是连续映射还是非连续映射的第二指示信息。该DMRS映射指示信令中包括第二指示信息，则根据该第二指示信息即可确定DMRS映射方式是连续映射还是非连续映射。
上述DMRS映射指示信令的内容包括但不限于第一指示信息和第二指示信息。
可选地，该DMRS映射信令为RRC信令。
需要说明的是，网络设备所执行的步骤可以单独形成一个实施例，终端所执行的步骤也可以单独形成一个实施例，本申请对此不作限定。
需要说明的是，上述实施例可以拆分为新实施例，或与其他实施例互相组合为新实施例，本申请对实施例之间的组合不做限定。
例如，上述图11和图12实施例可以结合形成一个新的实施例。下面，以频域重用因子为2，DMRS映射方式为单符号映射、非连续映射且该DMRS映射方式以2个RB为基本单元进行映射，正交掩码为4阶为例进行说明。
在本申请实施例中，该DMRS映射方式中每6个RE服务一个DMRS端口。
其中，该DMRS映射方式的映射公式为：
Figure PCTCN2022076709-appb-000036
其中，
Figure PCTCN2022076709-appb-000037
为缩放因子，w f(.)为在频域上的正交掩码，ω t(.)为在时域上的正交掩码，Δ为频域位置调整参数，
Figure PCTCN2022076709-appb-000038
为DMRS在一个slot中的时域位置，k′为频域索引，l′为时域索引，k表示RE在频域上的位置，l表示RE在时域上的位置，r(.)表示生成的要传输的伪随机序列，n表示要传输的序列的索引，p表示端口，
Figure PCTCN2022076709-appb-000039
表示映射到RE(k，l)上的符号，RE(k，l)表示RE在频域和时域上的位置。
参见表7示出了上述公式中各个符号的取值，其中，CDM groupλ表示每个互为映射关系的资源位置所属的分组标识：
表7
Figure PCTCN2022076709-appb-000040
参见图13，该映射方式中正交掩码为4阶Walsh序列，并且为单符号映射，则在RB中位于相同位置的RE的端口同处于一个CDM group。也就是图13中，同处于一个CDM group内的端口(图案)通过码分复用方式共用相同的时频资 源，并且支持的正交的DMRS端口数最大为8。而若其他条件不变，映射方式为双符号映射，则支持的正交的DMRS端口数最大为16。
图14示出了本申请一个示例性实施例提供的映射装置的框图，参见图3，该装置包括：
确定模块1401，用于根据频域重用因子确定解调参考信号DMRS映射方式，频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同，频域重用因子大于2。
在一些实施例中，DMRS映射方式为单符号映射，或者，DMRS映射方式为双符号映射。
在一些实施例中，DMRS映射方式为连续映射，或者，DMRS映射方式为非连续映射；
其中，连续映射是指第一数量的RE中任两个RE所占的频域相邻，非连续映射是指第一数量的RE中任两个RE所占的频域不相邻。
在一些实施例中，DMRS映射方式以一个物理资源块RB为基本单元进行映射，DMRS映射方式表示在一个RB内第一数量的RE所属的DMRS端口相同。
在一些实施例中，频域重用因子为3，或者，频域重用因子为6。
在一些实施例中，第一数量为1个RB中包括的子带的数量与频域重用因子的比值。
在一些实施例中，DMRS映射方式以多个RB为基本单元进行映射，DMRS映射方式表示在多个RB内第二数量的RE所属的DMRS端口相同。
在一些实施例中，频域重用因子为4。
在一些实施例中，第二数量为多个RB中包括的子带的数量与频域重用因子的比值。
在一些实施例中，确定模块1401，用于根据在频域上预设阶数的正交掩码和频域重用因子，确定DMRS映射方式，预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
在一些实施例中，预设阶数为4，或者，预设阶数为8。
在一些实施例中，参见图15，装置还包括：
接收模块1501，用于接收网络设备发送的DMRS映射指示信令，DMRS映射指示信令指示DMRS映射方式。
在一些实施例中，参见图16，装置还包括：
发送模块1601，用于向终端发送的DMRS映射指示信令，DMRS映射指示信令指示DMRS映射方式。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图17示出了本申请一个示例性实施例提供的映射装置的框图，参见图17，该装置包括：
确定模块1701，用于根据在频域上预设阶数的正交掩码，确定DMRS映射方式，预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
在一些实施例中，DMRS映射方式为单符号映射，或者，DMRS映射方式为双符号映射。
在一些实施例中，DMRS映射方式为连续映射，或者，DMRS映射方式为非连续映射；
其中，连续映射是指第一数量的RE中任两个RE所占的频域相邻，非连续映射是指第一数量的RE中任两个RE所占的频域不相邻。
在一些实施例中，预设阶数为4，或者，预设阶数为8。
在一些实施例中，DMRS映射方式中第一数量的RE所属的DMRS端口相同。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图18示出了本申请一个示例性实施例提供的映射装置的框图，参见图18，该装置包括：
确定模块1801，用于根据多个RB确定DMRS映射方式，DMRS映射方式以多个RB为基本单元进行映射。
在一些实施例中，DMRS映射方式为单符号映射，或者，DMRS映射方式为双符号映射。
在一些实施例中，DMRS映射方式为连续映射，或者，DMRS映射方式为非连续映射；
其中，连续映射是指第二数量的RE中任两个RE所占的频域相邻，非连续映射是指第二数量的RE中任两个RE所占的频域不相邻。
在一些实施例中，DMRS映射方式中第二数量的资源元素RE所属的DMRS端口相同。
需要说明的是，上述实施例提供的装置，在实现其功能时，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将设备的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。另外，上述实施例提供的装置与方法实施例属于同一构思，其具体实现过程详见方法实施例，这里不再赘述。
图19示出了本申请一个示例性实施例提供的通信设备的结构示意图，该通信设备包括：处理器1901、接收器1902、发射器1903、存储器1904和总线1905。
处理器1901包括一个或者一个以上处理核心，处理器1901通过运行软件程序以及模块，从而执行各种功能应用以及信息处理。
接收器1902和发射器1903可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器1904通过总线1905与处理器1901相连。
存储器1904可用于存储至少一个程序代码，处理器1901用于执行该至少一个程序代码，以实现上述方法实施例中的各个步骤。
此外，通信设备可以为终端或网络设备。存储器1904可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，易失性或非易失性存储设备包括但不限于：磁盘或光盘，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，静态随时存取存储器(SRAM)，只读存储器 (ROM)，磁存储器，快闪存储器，可编程只读存储器(PROM)。
在示例性实施例中，还提供了一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现上述各个方法实施例提供的由通信设备执行的映射方法。
在示例性实施例中，提供了一种芯片，所述芯片包括可编程逻辑电路和/或程序指令，当所述芯片在终端或网络设备上运行时，用于实现如各个方法实施例提供的映射方法。
在示例性实施例中，提供了计算机程序产品，当所述计算机程序产品被终端或网络设备的处理器执行时，其用于实现上述各个方法实施例提供的映射方法。
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成，也可以通过程序来指令相关的硬件完成，所述的程序可以存储于一种计算机可读存储介质中，上述提到的存储介质可以是只读存储器，磁盘或光盘等。
以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (29)

  1. 一种映射方法，其特征在于，所述方法包括：
    根据频域重用因子确定解调参考信号DMRS映射方式，所述频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，所述DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同，所述频域重用因子大于2。
  2. 根据权利要求1所述的方法，其特征在于，所述DMRS映射方式为单符号映射，或者，所述DMRS映射方式为双符号映射。
  3. 根据权利要求1所述的方法，其特征在于，所述DMRS映射方式为连续映射，或者，所述DMRS映射方式为非连续映射；
    其中，所述连续映射是指所述第一数量的RE中任两个RE所占的频域相邻，所述非连续映射是指所述第一数量的RE中任两个RE所占的频域不相邻。
  4. 根据权利要求1至3任一所述的方法，其特征在于，所述DMRS映射方式以一个资源块RB为基本单元进行映射，所述DMRS映射方式表示在所述一个RB内所述第一数量的RE所属的DMRS端口相同。
  5. 根据权利要求4所述的方法，其特征在于，所述频域重用因子为3，或者，所述频域重用因子为6。
  6. 根据权利要求4所述的方法，其特征在于，所述第一数量为1个RB中包括的子带的数量与所述频域重用因子的比值。
  7. 根据权利要求1至3任一所述的方法，其特征在于，所述DMRS映射方式以多个RB为基本单元进行映射，DMRS映射方式表示在所述多个RB内第二数量的RE所属的DMRS端口相同。
  8. 根据权利要求7所述的方法，其特征在于，所述频域重用因子为4。
  9. 根据权利要求7所述的方法，其特征在于，所述第二数量为所述多个RB中包括的子带的数量与所述频域重用因子的比值。
  10. 根据权利要求1至9任一所述的方法，其特征在于，所述根据频域重用因子确定DMRS映射方式，包括：
    根据在频域上预设阶数的正交掩码和所述频域重用因子，确定DMRS映射方式，所述预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
  11. 根据权利要求10所述的方法，其特征在于，所述预设阶数为4，或者，所述预设阶数为8。
  12. 根据权利要求1至11任一所述的方法，其特征在于，所述方法由终端执行，所述方法还包括：
    所述终端接收网络设备发送的DMRS映射指示信令，所述DMRS映射指示信令指示所述DMRS映射方式。
  13. 根据权利要求1至11任一所述的方法，其特征在于，所述方法由网络设备执行，所述方法还包括：
    所述网络设备向终端发送DMRS映射指示信令，所述DMRS映射指示信令指示所述DMRS映射方式。
  14. 一种映射方法，其特征在于，所述方法包括：
    根据在频域上预设阶数的正交掩码，确定DMRS映射方式，所述预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
  15. 根据权利要求14所述的方法，其特征在于，所述DMRS映射方式为单符号映射，或者，所述DMRS映射方式为双符号映射。
  16. 根据权利要求14所述的方法，其特征在于，所述DMRS映射方式为连续映射，或者，所述DMRS映射方式为非连续映射；
    其中，所述连续映射是指所述第一数量的RE中任两个RE所占的频域相邻，所述非连续映射是指所述第一数量的RE中任两个RE所占的频域不相邻。
  17. 根据权利要求14至16任一所述的方法，其特征在于，所述预设阶数为4，或者，所述预设阶数为8。
  18. 根据权利要求14至17任一所述的方法，其特征在于，所述DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同。
  19. 一种映射方法，其特征在于，所述方法包括：
    根据多个RB确定DMRS映射方式，所述DMRS映射方式以所述多个RB为基本单元进行映射。
  20. 根据权利要求19所述的方法，其特征在于，所述DMRS映射方式为单符号映射，或者，所述DMRS映射方式为双符号映射。
  21. 根据权利要求19所述的方法，其特征在于，所述DMRS映射方式为连续映射，或者，所述DMRS映射方式为非连续映射；
    其中，所述连续映射是指所述第二数量的RE中任两个RE所占的频域相邻，所述非连续映射是指所述第二数量的RE中任两个RE所占的频域不相邻。
  22. 根据权利要求19至21任一所述的方法，其特征在于，所述DMRS映射方式中第二数量的资源元素RE所属的DMRS端口相同。
  23. 一种映射装置，其特征在于，所述装置包括：
    确定模块，用于根据频域重用因子确定解调参考信号DMRS映射方式，所述频域重用因子表示在基本单元中通过频分复用方式支持的正交的端口数，所述DMRS映射方式中第一数量的资源元素RE所属的DMRS端口相同，所述频 域重用因子大于2。
  24. 一种映射装置，其特征在于，所述装置包括：
    确定模块，根据在频域上预设阶数的正交掩码，确定DMRS映射方式，所述预设阶数的正交掩码指示在一个CDM group内支持的正交的DMRS端口数量。
  25. 一种映射装置，其特征在于，所述装置包括：
    确定模块，用于根据多个RB确定DMRS映射方式，所述DMRS映射方式以所述多个RB为基本单元进行映射。
  26. 一种终端，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至22任一所述的映射方法。
  27. 一种网络设备，其特征在于，所述网络设备包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至22任一所述的映射方法。
  28. 一种计算机可读存储介质，所述可读存储介质中存储有可执行程序代码，所述可执行程序代码由处理器加载并执行以实现如权利要求1至22任一所述的映射方法。
  29. 一种计算机程序产品，其特征在于，所述计算机程序产品被终端或网络设备的处理器执行时，用于实现如权利要求1至22任一所述的映射方法。
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170272141A1 (en) * 2013-04-01 2017-09-21 Panasonic Intellectual Property Corporation Of America Communication apparatus and control signal mapping method
CN110418411A (zh) * 2018-04-27 2019-11-05 维沃移动通信有限公司 Dmrs的指示方法、装置及网络设备
CN111327409A (zh) * 2018-12-14 2020-06-23 电信科学技术研究院有限公司 一种数据传输方法及装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170272141A1 (en) * 2013-04-01 2017-09-21 Panasonic Intellectual Property Corporation Of America Communication apparatus and control signal mapping method
CN110418411A (zh) * 2018-04-27 2019-11-05 维沃移动通信有限公司 Dmrs的指示方法、装置及网络设备
CN111327409A (zh) * 2018-12-14 2020-06-23 电信科学技术研究院有限公司 一种数据传输方法及装置

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