WO2023206184A1 - 一种映射方法/装置/设备及存储介质 - Google Patents

一种映射方法/装置/设备及存储介质 Download PDF

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Publication number
WO2023206184A1
WO2023206184A1 PCT/CN2022/089683 CN2022089683W WO2023206184A1 WO 2023206184 A1 WO2023206184 A1 WO 2023206184A1 CN 2022089683 W CN2022089683 W CN 2022089683W WO 2023206184 A1 WO2023206184 A1 WO 2023206184A1
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Prior art keywords
mapping
frequency domain
dmrs
reuse factor
preset order
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PCT/CN2022/089683
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English (en)
French (fr)
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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 CN202280001469.XA priority Critical patent/CN117321944A/zh
Priority to PCT/CN2022/089683 priority patent/WO2023206184A1/zh
Publication of WO2023206184A1 publication Critical patent/WO2023206184A1/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 disclosure relates to the field of communication technology, and in particular, to a mapping method/device/equipment and a storage medium.
  • the MU-MIMO (Multi-user multiple input multiple output, multi-user multiple input multiple output) system can support more UE (User equipment) to obtain a larger system gain.
  • related joint transmission also has a high demand for the number of orthogonal ports supported during DMRS (Demodulation Reference Scheme) mapping.
  • DMRS Demodulation Reference Scheme
  • the current single-symbol DMRS mapping can support up to 6 orthogonal ports
  • the dual-symbol DMRS mapping can support up to 12 orthogonal ports, which cannot meet the demand for the number of orthogonal ports for related joint transmission.
  • the number of existing frequency domain resources (such as RE (Resource Element)) of each DMRS port is halved to support double the number of DMRS ports.
  • mapping method/device/equipment and storage medium proposed in this disclosure realize selective activation of candidate cells or candidate cell groups by dynamically changing the activation status and type of candidate cells and/or candidate cell groups.
  • the mapping type of the demodulation reference signal DMRS is determined according to the frequency domain reuse factor and the orthogonal cover code OCC of a preset order in the frequency domain, where DMRS of different mapping types correspond to different frequency domain reuse factors and preset orders,
  • the frequency domain reuse factor is used to represent the number of orthogonal ports supported by frequency division multiplexing FDM in the basic unit.
  • the frequency domain reuse factor and the preset order are both greater than or equal to 2, and the DMRS
  • the symbol length during mapping includes single symbol mapping or dual symbol mapping.
  • mapping device including:
  • a determination module configured to determine the mapping type of the demodulation reference signal DMRS based on the frequency domain reuse factor and the orthogonal cover code OCC of a preset order in the frequency domain, where DMRS of different mapping types correspond to different frequency domain reuse factors and Preset order, the frequency domain reuse factor is used to represent the number of orthogonal ports supported by frequency division multiplexing FDM in the basic unit, the frequency domain reuse factor and the preset order are both greater than or equal to 2 , and the symbol length during DMRS mapping includes single symbol mapping or dual symbol mapping.
  • Another aspect of the present disclosure provides a terminal, where the terminal includes:
  • transceiver coupled to said processor
  • the processor is configured to load and execute executable instructions to implement the mapping method described in the previous aspect.
  • the network device includes:
  • transceiver coupled to said processor
  • the processor is configured to load and execute executable instructions to implement the mapping method described in the previous aspect.
  • the readable storage medium stores executable program code.
  • the executable program code is loaded and executed by a processor to implement the mapping as described in the previous aspect. method.
  • Another aspect of the present disclosure provides a computer-readable storage medium.
  • 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 as described in the above aspect.
  • the mapping type of DMRS will be determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • Different mappings Types of DMRS correspond to different frequency domain reuse factors and preset order OCCs, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and The default orders are all greater than or equal to 2.
  • the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port)
  • the number of orthogonal ports supported by DMRS mapping can be increased.
  • each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • Figure 1a is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure
  • Figure 1b is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure
  • Figure 2a is a schematic flow chart of a mapping method provided by another embodiment of the present disclosure.
  • Figure 2b is a schematic diagram of the distribution of different ports on time-frequency resources when performing single symbol mapping based on Formula 1 and Table 1 according to an embodiment of the present disclosure
  • Figure 3a is a schematic flowchart of a mapping method provided by yet another embodiment of the present disclosure.
  • Figure 3b is a schematic diagram of the distribution of different ports on time-frequency resources when single symbol mapping is performed based on Formula 2 and Table 2 according to an embodiment of the present disclosure
  • Figure 3c is a schematic diagram of the distribution of different ports on time-frequency resources when dual-symbol mapping is performed based on Formula 2 and Table 2 according to an embodiment of the present disclosure
  • Figure 4 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • Figure 5 is a schematic diagram of the distribution of different ports on time-frequency resources when performing lattice dual-symbol mapping based on Formula 3 and Table 3 according to an embodiment of the present disclosure
  • Figure 6 is a schematic flowchart of a mapping method provided by yet another embodiment of the present disclosure.
  • Figure 7 is a schematic diagram of the distribution of different ports on time-frequency resources when performing two lattice-like dual symbol mappings based on Formula 4 and Table 4 provided by an embodiment of the present disclosure
  • Figure 8 is a schematic flowchart of a mapping method provided by yet another embodiment of the present disclosure.
  • Figure 9 is a schematic flowchart of a mapping method provided by yet another embodiment of the present disclosure.
  • Figure 10 is a schematic flowchart of a mapping method provided by yet another embodiment of the present disclosure.
  • Figure 11 is a schematic structural diagram of a mapping device provided by an embodiment of the present disclosure.
  • Figure 12 is a block diagram of a user equipment provided by an embodiment of the present disclosure.
  • Figure 13 is a block diagram of a network side device provided by an embodiment of the present disclosure.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • the words "if” and “if” as used herein may be interpreted as "when” or "when” or "in response to determination.”
  • mapping method/device/equipment and a storage medium provided by embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.
  • Figure 1a is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 101a Determine the DMRS mapping type according to the frequency domain reuse factor and the OCC (Orthogonal Cover Code) of a preset order in the frequency domain.
  • OCC Orthogonal Cover Code
  • a UE may be a device that provides voice and/or data connectivity to a user.
  • Terminal devices can communicate with one or more core networks via RAN (Radio Access Network).
  • UEs can be IoT terminals, such as sensor devices, mobile phones (or "cellular" phones) and devices with
  • the computer of the network terminal may, for example, be a fixed, portable, pocket-sized, handheld, built-in computer or vehicle-mounted device.
  • station STA
  • subscriber unit subscriber unit
  • subscriber station subscriber station
  • mobile station mobile station
  • mobile station mobile station
  • remote station remote station
  • access point remote terminal
  • remoteterminal access terminal
  • access terminal access terminal
  • user device user terminal
  • user agent useragent
  • the UE may also be a device of an unmanned aerial vehicle.
  • the UE may also be a vehicle-mounted device, for example, it may be a driving computer with a wireless communication function, or a wireless terminal connected to an external driving computer.
  • the UE may also be a roadside device, for example, it may be a streetlight, a signal light, or other roadside device with wireless communication functions.
  • DMRS of different mapping types correspond to different frequency domain reuse factors and different preset orders.
  • the frequency domain reuse factors are used to represent the frequency-division FDM (Frequency-division) in the basic unit.
  • Both the factor and the preset order can be greater than or equal to 2.
  • the frequency domain reuse factor may be 2, 4, or 6, and the preset order may be 6, 3, or 2.
  • the corresponding preset order can be any value.
  • the corresponding preset order can be "6 or 3" or 2" (for example, when the frequency domain reuse factor is 2, the default order can be 6), or any value other than "6 or 3 or 2" (for example, the frequency domain reuse factor is When 2, the default order can be 4).
  • the corresponding frequency domain reuse factor can be any value.
  • the corresponding frequency domain reuse factor can be "2 or 4 or 6" (for example, when the preset order can be 2, the frequency domain reuse factor is 6,), or it can be any value other than "2 or 4 or 6" (for example, the preset order can be When it is 2, the frequency domain reuse factor is 4).
  • the frequency domain reuse factor is: 2, and the preset order is: 6
  • the frequency domain reuse factor is: 4, and the preset order is: 3
  • “frequency domain reuse factor is: 2, and the preset order is: 6”
  • “frequency domain reuse factor is: 4, and the preset order is: 3”
  • the domain reuse factor is: 6, and the preset order is: 2.”
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • Figure 1b is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 101b Determine the DMRS mapping type according to the frequency domain reuse factor, the OCC of a preset order in the frequency domain, the symbol length during DMRS mapping, and the mapping mode during DMRS mapping.
  • the above-mentioned symbol length during DMRS mapping includes single-symbol mapping or dual-symbol mapping.
  • the mapping method during DMRS mapping in response to the symbol length during DMRS mapping being single symbol mapping, includes comb mapping or block mapping, in response to the symbol length during DMRS mapping It is dual-symbol mapping, and the mapping method during DMRS mapping includes comb mapping, lattice mapping or block mapping.
  • a trellis mapping form is introduced for dual-symbol mapped DMRS, so as to compensate to a certain extent for increasing the number of orthogonal DMRS ports.
  • the channel estimation performance loss caused by the reduction in the number of frequency domain resources of the DMRS port.
  • the frequency domain reuse factor is: 4, and the preset order is: 3" and “the frequency domain reuse factor is: 6, and the preset order is: 2 "The form of the lattice mapping introduced by the dual-symbol mapping in these two cases is explained in detail. For details, please refer to the subsequent embodiments. However, if trellis mapping is also introduced for dual-symbol mapping in other combination situations, it is also within the scope of the present disclosure.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • Figure 2a is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 201 Determine the DMRS mapping type according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain, where the frequency domain reuse factor is: 2, and the preset order is: 6th order.
  • the frequency domain reuse factor is: 2
  • the preset order is: 6th order
  • the transmission symbols are mapped to the corresponding time-frequency resources through the following mapping formula 1 :
  • k′ 0,1,2,3,4,5
  • n 0,1,2
  • ⁇ f (k′) is the OCC in the frequency domain
  • ⁇ t (l′) is the OCC in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k′ is the frequency domain index
  • l′ is the time domain index
  • k and l represent the position
  • r(.) represents the transmission to be sequence
  • n represents the index of the sequence to be transmitted
  • p represents the port
  • w f (k′) when the preset order of w f (k′) is 6th order, w f (k′) can arbitrarily select 4 column vectors from the following 6th order orthogonal code.
  • OCC code let's take the selection of the first four column vectors as an example for explanation.
  • w f (k') can select all 6 column vectors from the following 6-order orthogonal code to support more than twice the number of DMRS ports currently supported.
  • the preset order of w f (k') when the preset order of w f (k') is 6th order, it can also be other similar 6th order orthogonal code. It should be noted that any two column vectors in the following 6th-order orthogonal code are orthogonal.
  • Table 1 shows the ⁇ f (k′), ⁇ t (l′), The specific value of ⁇ .
  • FIG. 2b is a schematic diagram of the distribution of different ports on time-frequency resources when single symbol mapping is performed based on Formula 1 and Table 1 according to an embodiment of the present disclosure.
  • CDM code division multiplexing, code division multiplexing
  • each CDM group supports normal The number of orthogonal DMRS ports is 4, then a total of 8 orthogonal DMRS ports can be supported when single symbol mapping is performed based on Formula 1 and Table 1.
  • the dual-symbol mapping based on Formula 1 and Table 1 is similar.
  • the number of orthogonal DMRS ports supported in each CDM group can be 8, then based on Formula 1
  • a total of 16 orthogonal DMRS ports can be supported.
  • the method of the embodiment of the present disclosure is an enhancement to DMRS type 1 in the existing protocol. Therefore, compared with the single symbol mapping in type 1 of the related technology, which can support up to 4 orthogonal DMRS ports, the dual symbol mapping can support up to 4 orthogonal DMRS ports.
  • the embodiments of the present disclosure can support double the orthogonal DMRS ports of existing protocols regardless of single symbol mapping or dual symbol mapping, which can meet the requirements of related joint transmission.
  • a sixth-order OCC is used in the frequency domain for DMRS mapping with a frequency domain reuse factor of 2, thereby ensuring that each port achieves frequency domain orthogonality, thus ensuring the performance of channel estimation.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • domain reuse factor and the OCC of the preset order, and, the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that by introducing higher-order OCC in the frequency domain, the number of orthogonal ports supported by DMRS mapping can be increased, and each port can be made to achieve frequency domain orthogonality, thus ensuring the performance of channel estimation.
  • Figure 3a is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 301 Determine the DMRS mapping type according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain, where the frequency domain reuse factor is: 4, and the preset order is: 3rd order.
  • the frequency domain reuse factor is: 4, and the preset order is: 3rd order, the transmission symbols are mapped to the corresponding time-frequency resources through the following mapping formula 2 :
  • n 0,1,...
  • ⁇ f (k′) is the OCC in the frequency domain
  • ⁇ t (l′) is the OCC in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k′ is the frequency domain index
  • l′ is the time domain index
  • k and l represent the position
  • r(.) represents the transmission to be sequence
  • n represents the index of the sequence to be transmitted
  • p represents the port
  • wf (k′) when the preset order of w f (k′) is 3rd order, wf (k′) can arbitrarily select two column vectors from the following 3rd order orthogonal codes.
  • OCC code let's take the selection of the first two column vectors as an example for explanation.
  • w f (k') can select all 3 column vectors from the following 3rd order orthogonal code to support more than twice the number of DMRS ports currently supported.
  • the preset order of w f (k') when the preset order of w f (k') is 3rd order, it can also be other similar 3rd order orthogonal code. It should be noted that any two column vectors in the following third-order orthogonal code are orthogonal.
  • Table 2 provides ⁇ f (k′), ⁇ t (l′), The specific value of ⁇ .
  • Figure 3b is a schematic diagram of the distribution of different ports on time-frequency resources when performing single symbol mapping based on Formula 2 and Table 2 provided by an embodiment of the present disclosure.
  • Figure 3c is a diagram based on the formula provided by an embodiment of the present disclosure. 2 and Table 2 illustrate the distribution of time-frequency resources of different ports during dual-symbol mapping.
  • FIG 3b when single symbol mapping is performed based on Formula 2 and Table 2, there are 4 CDM groups. Among them, the number of orthogonal DMRS ports supported in each CDM group is 2. Based on Formula 2 and Table 2 Single symbol mapping can support a total of 8 orthogonal DMRS ports.
  • dual-symbol mapping is performed based on Formula 2 and Table 2, and the DMRS can be mapped in a block mapping manner.
  • dual-symbol mapping is performed based on Formula 2 and Table 2, including 4 CDMs. group (not shown in Figure 3c), where the number of orthogonal DMRS ports supported in each CDM group is 4 (not shown in Figure 3c), then dual-symbol mapping based on Formula 2 and Table 2 can support a total of 16 orthogonal DMRS ports.
  • the method of the embodiment of the present disclosure is an enhancement to DMRS type 1 in the existing protocol. Therefore, compared with the single symbol mapping of type 1 in the related art, which can support up to 4 orthogonal DMRS ports, the dual symbol mapping can support up to 4 orthogonal DMRS ports. In terms of supporting eight orthogonal DMRS ports, the embodiment of the present disclosure can support twice as many orthogonal DMRS ports as the existing protocol regardless of single symbol mapping or dual symbol mapping, which can meet the requirements of related joint transmission. In addition, in the embodiments of the present disclosure, a third-order OCC is used in the frequency domain for DMRS mapping with a frequency domain reuse factor of 4, thereby ensuring that each port achieves frequency domain orthogonality, thus ensuring the performance of channel estimation.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • FIG. 4 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure. The method can be executed by a UE or a network device. As shown in Figure 4, the mapping method can include the following steps:
  • Step 401 Determine the DMRS mapping type according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain, where the frequency domain reuse factor is: 4, and the preset order is: 3rd order, and when The symbol length during DMRS mapping is dual-symbol mapping, and the DMRS is mapped in a trellis mapping manner.
  • the frequency domain reuse factor is: 4, and the preset order is: 3.
  • the transmission symbols are mapped to the corresponding time-frequency resources. :
  • n 0,1,...
  • ⁇ f (k′) is the OCC in the frequency domain
  • ⁇ t (l′) is the OCC in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k′ is the frequency domain index
  • l′ is the time domain index
  • k and l represent the position
  • r(.) represents the transmission to be sequence
  • n represents the index of the sequence to be transmitted
  • p represents the port
  • wf (k′) when the preset order of w f (k′) is 3rd order, wf (k′) can arbitrarily select two column vectors from the following 3rd order orthogonal codes.
  • OCC code let's take the selection of the first two column vectors as an example for explanation.
  • w f (k') can select all 3 column vectors from the following 3rd order orthogonal code to support more than twice the number of DMRS ports currently supported.
  • the preset order of w f (k') when the preset order of w f (k') is 3rd order, it can also be other similar 3rd order orthogonal code. It should be noted that any two column vectors in the following third-order orthogonal code are orthogonal.
  • the frequency domain reuse factor provided in Table 3 for the embodiment of the present disclosure is: 4, and the preset order It is: the specific values of ⁇ t (l′) and ⁇ when DMRS is mapped in a lattice mapping manner under third-order dual-symbol mapping.
  • ⁇ t (l′) the specific values of ⁇ t (l′) and ⁇ when DMRS is mapped in a lattice mapping manner under third-order dual-symbol mapping.
  • the lattice-shaped dual-symbol DMRS mapping of "the frequency domain reuse factor is: 4, and the preset order is: 3rd order" can be realized.
  • FIG. 5 is a schematic diagram of the distribution of different ports on time-frequency resources when performing lattice dual-symbol mapping based on Formula 3 and Table 3 according to an embodiment of the present disclosure.
  • dual-symbol DMRS mapping by introducing a lattice mapping method, when the number of orthogonal DMRS ports is increased, the problem caused by the reduction in the number of frequency domain resources for each orthogonal DMRS port can be compensated to a certain extent. Channel estimation performance loss.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • Figure 6 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure. The method can be executed by a UE or a network device. As shown in Figure 6, the mapping method can include the following steps:
  • Step 601 Determine the DMRS mapping type according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain, where the frequency domain reuse factor is: 6, and the preset order is: 2nd order, and when The symbol length during DMRS mapping is dual-symbol mapping, and the DMRS is mapped in a trellis mapping manner.
  • the frequency domain reuse factor is: 6, and the preset order is: 2 order, the transmission symbols are mapped to the corresponding time-frequency resources through the following mapping formula 4 :
  • ⁇ f (k′) is the OCC in the frequency domain
  • ⁇ t (l′) is the OCC in the time domain
  • ⁇ is the frequency domain position adjustment parameter
  • k′ is the frequency domain index
  • l′ is the time domain index
  • k and l represent the position
  • r(.) represents the transmission to be sequence
  • n represents the index of the sequence to be transmitted
  • p represents the port
  • Table 4 provides the frequency domain reuse factor for the embodiment of the present disclosure: 6, and the preset order is: When DMRS is mapped in a lattice mapping manner under 2-order dual-symbol mapping, ⁇ t (l′ ) and the specific values of ⁇ .
  • the lattice-shaped dual-symbol DMRS mapping of "the frequency domain reuse factor is: 6, and the preset order is: 2nd order" can be realized.
  • FIG. 7 is a schematic diagram of the distribution of different ports on time-frequency resources when performing two lattice-like dual symbol mappings based on Formula 4 and Table 4 provided by an embodiment of the present disclosure.
  • Figure 7 when dual-symbol mapping is performed based on Formula 4 and Table 4, by introducing a lattice mapping method, when the number of orthogonal DMRS ports is increased, the frequency of each orthogonal DMRS port can be compensated to a certain extent. The loss of channel estimation performance caused by the reduction in the number of domain resources.
  • Figure 7 is only an example, and other lattice mapping methods are also within the protection scope of the embodiments of the present disclosure.
  • dual-symbol mapping is performed based on Formula 4 and Table 4, including 6 CDM groups (not shown in Figure 7), where the number of orthogonal DMRS ports supported in each CDM group is 4 (not shown in Figure 7), then dual-symbol mapping based on Formula 4 and Table 4 can support a total of 24 orthogonal DMRS ports.
  • single symbol mapping is performed based on Formula 4 and Table 4, including 6 CDM groups. Among them, the number of orthogonal DMRS ports supported in each CDM group is 2, then single symbol mapping is performed based on Formula 4 and Table 4. The mapping can support a total of 12 orthogonal DMRS ports.
  • the method of the embodiment of the present disclosure is an enhancement to DMRS type2 in the existing protocol. Therefore, compared with the single symbol mapping of type2 in the related art, which can support up to 6 orthogonal DMRS ports, the dual symbol mapping can support up to 6 orthogonal DMRS ports. In terms of supporting 12 orthogonal DMRS ports, the embodiment of the present disclosure can double the orthogonal DMRS ports of the existing protocol regardless of single symbol mapping or dual symbol mapping, which can meet the requirements of related joint transmission. In addition, in the embodiments of the present disclosure, a second-order OCC is used in the frequency domain for DMRS mapping with a frequency domain reuse factor of 6, thereby ensuring that each port achieves frequency domain orthogonality, thus ensuring the performance of channel estimation.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • FIG 8 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure. The method can be executed by a UE or a network device. As shown in Figure 8, the mapping method can include the following steps:
  • Step 801 Determine the symbol length during DMRS mapping to be dual-symbol mapping, and map the DMRS in a trellis mapping manner.
  • step 801 For detailed introduction to step 801, please refer to the above embodiment description.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • FIG. 9 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 901 Determine the symbol length during DMRS mapping to be dual-symbol mapping, and map the DMRS in a lattice mapping manner.
  • the preset order is: 3rd order
  • the frequency domain reuse factor is: 4.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • FIG 10 is a schematic flowchart of a mapping method provided by an embodiment of the present disclosure.
  • the method can be executed by a UE or a network device.
  • the mapping method can include the following steps:
  • Step 1001 Determine the symbol length during DMRS mapping to be dual-symbol mapping, and map the DMRS in a lattice mapping manner.
  • the preset order is: 2nd order
  • the frequency domain reuse factor is: 6.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • a lattice mapping method is also introduced for dual-symbol DMRS mapping.
  • this compensates to a certain extent for the frequency domain of each orthogonal DMRS port. The loss of channel estimation performance caused by the reduction in the number of resources.
  • the network device may send indication information to the UE.
  • the indication information is used to indicate the frequency domain reuse factor corresponding to the above-mentioned DMRS mapping type, OCC in the frequency domain, and whether it is trellised or not. At least one of the mappings.
  • the UE may receive indication information sent by the network device.
  • the indication information is used to indicate the frequency domain reuse factor corresponding to the above-mentioned DMRS mapping type and the OCC in the frequency domain. , whether it is at least one of lattice mapping.
  • Figure 11 is a schematic structural diagram of a mapping device provided by an embodiment of the present disclosure. As shown in Figure 11, the device may include:
  • a determination module configured to determine the mapping type of the demodulation reference signal DMRS based on the frequency domain reuse factor and the orthogonal cover code OCC of a preset order in the frequency domain, where DMRS of different mapping types correspond to different frequency domain reuse factors and Preset order, the frequency domain reuse factor is used to represent the number of orthogonal ports supported by frequency division multiplexing FDM in the basic unit, the frequency domain reuse factor and the preset order are both greater than or equal to 2 , and the symbol length during DMRS mapping includes single symbol mapping or dual symbol mapping.
  • the mapping type of DMRS is determined according to the frequency domain reuse factor and the OCC of a preset order in the frequency domain.
  • DMRS of different mapping types correspond to different frequencies.
  • the domain reuse factor and the OCC of the preset order, and the frequency domain reuse factor is used to represent the number of orthogonal ports supported by FDM in the basic unit, where the frequency domain reuse factor and the preset order are both greater than or equal to 2. It can be seen from this that in the embodiments of the present disclosure, by making the frequency domain reuse factor greater than or equal to 2 (that is, reducing the number of frequency domain resources for each DMRS port), the number of orthogonal ports supported by DMRS mapping can be increased. At the same time, by adjusting the preset order of OCC in the frequency domain, each port achieves frequency domain orthogonality, thereby ensuring the performance of channel estimation.
  • the frequency domain reuse factor is: 2.
  • the frequency domain reuse factor is: 4.
  • the frequency domain reuse factor is: 6.
  • the preset order is: 6 orders.
  • the preset order is: 3rd order.
  • the preset order is: 2 orders.
  • the determining module is also used to:
  • the symbol length during DMRS mapping includes single symbol mapping, or dual symbol mapping; and, in response to the symbol length during DMRS mapping being single symbol mapping, the mapping method during DMRS mapping includes comb mapping Or block mapping, in response to the symbol length during DMRS mapping being dual symbol mapping, the mapping method during DMRS mapping includes comb mapping, lattice mapping or block mapping.
  • the symbol length during DMRS mapping is dual-symbol mapping
  • the mapping method during DMRS mapping is trellis mapping
  • Figure 12 is a block diagram of a user equipment UE1200 provided by an embodiment of the present disclosure.
  • the UE 1200 may be a mobile phone, a computer, a digital broadcast terminal device, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the UE 1200 may include at least one of the following components: a processing component 1202 , a memory 1204 , a power component 1206 , a multimedia component 1208 , an audio component 1210 , an input/output (I/O) interface 1212 , a sensor component 1213 , and a communication component. 1216.
  • a processing component 1202 a memory 1204 , a power component 1206 , a multimedia component 1208 , an audio component 1210 , an input/output (I/O) interface 1212 , a sensor component 1213 , and a communication component. 1216.
  • Processing component 1202 generally controls the overall operations of UE 1200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations.
  • the processing component 1202 may include at least one processor 1220 to execute instructions to complete all or part of the steps of the above method. Additionally, processing component 1202 may include at least one module that facilitates interaction between processing component 1202 and other components. For example, processing component 1202 may include a multimedia module to facilitate interaction between multimedia component 1208 and processing component 1202.
  • Memory 1204 is configured to store various types of data to support operations at UE 1200 . Examples of this data include instructions for any application or method operating on the UE 1200, contact data, phonebook data, messages, pictures, videos, etc.
  • Memory 1204 may be implemented by any type of volatile or non-volatile storage device, or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EEPROM), Programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EEPROM erasable programmable read-only memory
  • EPROM Programmable read-only memory
  • PROM programmable read-only memory
  • ROM read-only memory
  • magnetic memory flash memory, magnetic or optical disk.
  • Power supply component 1206 provides power to various components of UE 1200.
  • Power component 1206 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power to UE 1200 .
  • Multimedia component 1208 includes a screen that provides an output interface between the UE 1200 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes at least one touch sensor to sense touches, slides, and gestures on the touch panel. The touch sensor may not only sense the boundary of the touch or sliding operation, but also detect the wake-up time and pressure related to the touch or sliding operation.
  • multimedia component 1208 includes a front-facing camera and/or a rear-facing camera. When the UE1200 is in an operating mode, such as shooting mode or video mode, the front camera and/or rear camera can receive external multimedia data.
  • Each front-facing camera and rear-facing camera can be a fixed optical lens system or have a focal length and optical zoom capabilities.
  • Audio component 1210 is configured to output and/or input audio signals.
  • audio component 1210 includes a microphone (MIC) configured to receive external audio signals when UE 1200 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 1204 or sent via communications component 1216 .
  • audio component 1210 also includes a speaker for outputting audio signals.
  • the I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, etc. These buttons may include, but are not limited to: Home button, Volume buttons, Start button, and Lock button.
  • Sensor component 1213 includes at least one sensor for providing various aspects of status assessment for UE 1200 .
  • the sensor component 1213 can detect the open/closed state of the device 1200, the relative positioning of components, such as the display and keypad of the UE1200, the sensor component 1213 can also detect the position change of the UE1200 or a component of the UE1200, the user and the The presence or absence of UE1200 contact, UE1200 orientation or acceleration/deceleration and temperature changes of UE1200.
  • Sensor assembly 1213 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact.
  • Sensor assembly 1213 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 1213 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • Communication component 1216 is configured to facilitate wired or wireless communication between UE 1200 and other devices.
  • UE1200 can access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof.
  • the communication component 1216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communications component 1216 also includes a near field communications (NFC) module to facilitate short-range communications.
  • NFC near field communications
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • UE 1200 may be configured by at least one application specific integrated circuit (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array ( FPGA), controller, microcontroller, microprocessor or other electronic component implementation for executing the above method.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • DSPD digital signal processing device
  • PLD programmable logic device
  • FPGA field programmable gate array
  • controller microcontroller, microprocessor or other electronic component implementation for executing the above method.
  • Figure 13 is a block diagram of a network side device 1300 provided by an embodiment of the present disclosure.
  • the network side device 1300 may be provided as a network side device.
  • the network side device 1300 includes a processing component 1311, which further includes at least one processor, and a memory resource represented by a memory 1332 for storing instructions, such as application programs, that can be executed by the processing component 1322.
  • the application program stored in memory 1332 may include one or more modules, each corresponding to a set of instructions.
  • the processing component 1310 is configured to execute instructions to perform any of the foregoing methods applied to the network side device, for example, the method shown in FIG. 1 .
  • the network side device 1300 may also include a power supply component 1326 configured to perform power management of the network side device 1300, a wired or wireless network interface 1350 configured to connect the network side device 1300 to the network, and an input/output (I/O ) interface 1358.
  • the network side device 1300 may operate based on an operating system stored in the memory 1332, such as Windows Server TM, Mac OS X TM, Unix TM, Linux TM, Free BSD TM or similar.
  • the methods provided by the embodiments of the present disclosure are introduced from the perspectives of network side equipment and UE respectively.
  • the network side device and the UE may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.
  • the methods provided by the embodiments of the present disclosure are introduced from the perspectives of network side equipment and UE respectively.
  • the network side device and the UE may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.
  • the communication device may include a transceiver module and a processing module.
  • the transceiver module may include a sending module and/or a receiving module.
  • the sending module is used to implement the sending function
  • the receiving module is used to implement the receiving function.
  • the transceiving module may implement the sending function and/or the receiving function.
  • the communication device may be a terminal device (such as the terminal device in the foregoing method embodiment), a device in the terminal device, or a device that can be used in conjunction with the terminal device.
  • the communication device may be a network device, a device in a network device, or a device that can be used in conjunction with the network device.
  • the communication device may be a network device, or may be a terminal device (such as the terminal device in the foregoing method embodiment), or may be a chip, chip system, or processor that supports the network device to implement the above method, or may be a terminal device that supports A chip, chip system, or processor that implements the above method.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • a communications device may include one or more processors.
  • the processor may be a general-purpose processor or a special-purpose processor, etc.
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control and execute communication devices (such as network side equipment, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.)
  • a computer program processes data for a computer program.
  • the communication device may also include one or more memories, on which a computer program may be stored, and the processor executes the computer program, so that the communication device executes the method described in the above method embodiment.
  • data may also be stored in the memory.
  • the communication device and the memory can be provided separately or integrated together.
  • the communication device may also include a transceiver and an antenna.
  • the transceiver can be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver can include a receiver and a transmitter.
  • the receiver can be called a receiver or a receiving circuit, etc., and is used to implement the receiving function;
  • the transmitter can be called a transmitter or a transmitting circuit, etc., and is used to implement the transmitting function.
  • the communication device may also include one or more interface circuits.
  • Interface circuitry is used to receive code instructions and transmit them to the processor.
  • the processor executes the code instructions to cause the communication device to perform the method described in the above method embodiment.
  • a transceiver for implementing receiving and transmitting functions may be included in the processor.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the processor may store a computer program, and the computer program runs on the processor, which can cause the communication device to perform the method described in the above method embodiment.
  • the computer program may be embedded in the processor, in which case the processor may be implemented in hardware.
  • the communication device may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this disclosure may be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or a terminal device (such as the terminal device in the foregoing method embodiment), but the scope of the communication device described in the present disclosure is not limited thereto, and the structure of the communication device may not be limited to limits.
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the communication device may be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the communication device may be a chip or a system on a chip
  • the chip includes a processor and an interface.
  • the number of processors may be one or more, and the number of interfaces may be multiple.
  • the chip also includes a memory, which is used to store necessary computer programs and data.
  • the present disclosure also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • the present disclosure also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • the computer program product includes one or more computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated therein.
  • the available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.
  • magnetic media e.g., floppy disks, hard disks, magnetic tapes
  • optical media e.g., high-density digital video discs (DVD)
  • DVD digital video discs
  • semiconductor media e.g., solid state disks, SSD
  • At least one in the present disclosure can also be described as one or more, and the plurality can be two, three, four or more, and the present disclosure is not limited.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D” etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.

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Abstract

本公开提出一种映射方法/装置/设备/存储介质，属于通信技术领域。方法包括：根据频域重用因子和在频域上预设阶数的OCC确定DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，频域重用因子和预设阶数均大于或等于2，且DMRS映射时的符号长度包括单符号映射或者双符号映射。本公开提供的方法增加了DMRS映射支持的正交的端口数。同时通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，确保了信道估计的性能。以及通过引入格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。

Description

一种映射方法/装置/设备及存储介质 技术领域
本公开涉及通信技术领域，尤其涉及一种映射方法/装置/设备及存储介质。
背景技术
在通信系统中，通过引入相关联合传输，使得MU-MIMO(Multi-user multiple input multiple output，多用户多输入多输出)系统可以支持更多UE(User equipment，用户设备)来获得较大的系统增益。其中，相关联合传输对于DMRS(Demodulation Reference Scheme，解调参考信号)映射时所支持的正交的端口数也有较高需求。其中，目前的单符号的DMRS映射最多可以支持6个正交的端口，双符号的DMRS映射最多可以支持12个正交的端口，无法满足相关联合传输对于正交的端口数的需求。
相关技术中，通过使得现有的每个DMRS端口的频域资源(如RE(Resource Element,资源元素))数减半，来支持双倍的DMRS端口数。
但是，相关技术中，针对于DMRS映射方式一(Type1)而言，减半后每个DMRS端口数的频域资源数为3个，不能实现频域正交，则会降低信道估计的性能。
发明内容
本公开提出的映射方法/装置/设备及存储介质，通过对候选小区和/或候选小区组的激活状态和类型的动态变更，来实现对候选小区或候选小区组的选择性激活。
本公开一方面实施例提出的映射方法，包括：
根据频域重用因子和在频域上预设阶数的正交覆盖码OCC确定解调参考信号DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，所述频域重用因子用于表示在基本单元中通过频分复用FDM方式支持的正交端口数，所述频域重用因子和所述预设阶数均大于或等于2，且所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射。
本公开又一方面实施例提出的一种映射装置，包括：
确定模块，用于根据频域重用因子和在频域上预设阶数的正交覆盖码OCC确定解调参考信号DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，所述频域重用因子用于表示在基本单元中通过频分复用FDM方式支持的正交端口数，所述频域重用因子和所述预设阶数均大于或等于2，且所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射。
本公开又一方面实施例提出的一种终端，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上一方面所述的映射方法。
本公开又一方面实施例提出的一种网络设备，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上一方面所述的映射方法。
本公开又一方面实施例提出的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上一方面所述的映射方法。
本公开又一方面实施例提出的计算机可读存储介质，所述计算机程序产品被终端或网络设备的处理器执行时，用于实现如如上一方面所述的映射方法。
综上所述，在本公开实施例提供的映射方法/装置/设备及存储介质之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用 因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1a为本公开一个实施例所提供的映射方法的流程示意图；
图1b为本公开一个实施例所提供的映射方法的流程示意图；
图2a为本公开另一个实施例所提供的映射方法的流程示意图
图2b为本公开实施例提供的一种基于公式一和表1进行单符号映射时的不同端口在时频资源上的分布示意图；
图3a为本公开再一个实施例所提供的映射方法的流程示意图；
图3b为本公开实施例提供的一种基于公式二和表2进行单符号映射时的不同端口在时频资源上的分布示意图；
图3c为本公开实施例提供的一种基于公式二和表2进行双符号映射时的不同端口在时频资源上的分布示意图；
图4为本公开实施例所提供的一种映射方法的流程示意图；
图5为本公开实施例提供的一种基于公式三和表3进行格状的双符号映射时的不同端口在时频资源上的分布示意图；
图6为本公开又一个实施例所提供的映射方法的流程示意图；
图7为本公开实施例提供的两种基于公式四和表4进行格状的双符号映射时的不同端口在时频资源上的分布示意图；
图8为本公开又一个实施例所提供的映射方法的流程示意图；
图9为本公开又一个实施例所提供的映射方法的流程示意图；
图10为本公开又一个实施例所提供的映射方法的流程示意图；
图11为本公开一个实施例所提供的映射装置的结构示意图；
图12是本公开一个实施例所提供的一种用户设备的框图；
图13为本公开一个实施例所提供的一种网络侧设备的框图。
具体实施方式
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公开实施例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、本公开实施例的一些方面相一致的装置和方法的例子。
在本公开实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开实施例。在本公开实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。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，尽管在本公开实施例可能采用术语第一、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，在不脱离本公开实施例范围的情况下，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，如 在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面参考附图对本公开实施例所提供的一种映射方法/装置/设备及存储介质进行详细描述。
图1a为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图1a所示，该映射方法可以包括以下步骤：
步骤101a、根据频域重用因子和在频域上预设阶数的OCC(Orthogonal Cover Code，正交覆盖码)确定DMRS的映射类型。
在本公开的一个实施例之中，UE可以是指向用户提供语音和/或数据连通性的设备。终端设备可以经RAN(Radio Access Network，无线接入网)与一个或多个核心网进行通信，UE可以是物联网终端，如传感器设备、移动电话(或称为“蜂窝”电话)和具有物联网终端的计算机，例如，可以是固定式、便携式、袖珍式、手持式、计算机内置的或者车载的装置。例如，站(Station，STA)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、移动台(mobile)、远程站(remote station)、接入点、远程终端(remoteterminal)、接入终端(access terminal)、用户装置(user terminal)或用户代理(useragent)。或者，UE也可以是无人飞行器的设备。或者，UE也可以是车载设备，比如，可以是具有无线通信功能的行车电脑，或者是外接行车电脑的无线终端。或者，UE也可以是路边设备，比如，可以是具有无线通信功能的路灯、信号灯或者其它路边设备等。
以及，在本公开的一个实施例之中，不同映射类型的DMRS对应不同的频域重用因子和不同的预设阶数，该频域重用因子用于表示在基本单元中通过FDM(Frequency-division multiplexing，频分多路复用)方式支持的正交端口数，其中，该基本单元可以为符号(如OFDM(Orthogonal Frequency Division Multiplexing，正交频分复用)符号)，以及，该频域重用因子和预设阶数均可以大于或等于2。
需要说明的是，在本公开的一个实施例之中，该频域重用因子可以为2或4或6，以及，该预设阶数可以为6或3或2。
具体的，针对于频域重用因子而言，当其为2或4或6时，所对应的预设阶数可以为任一值，例如，所对应的预设阶数可以为“6或3或2”中的任一种(如频域重用因子为2时，预设阶数可以为6)，也可以为除了“6或3或2”之外的任意值(如频域重用因子为2时，预设阶数可以为4)。
以及，针对于预设阶数而言，当其为6或3或2时，所对应的频域重用因子可以为任一值，例如，所对应的频域重用因子可以为“2或4或6”中的任一种(如预设阶数可以为2时，频域重用因子为6，)，也可以为除了“2或4或6”之外的任意值(如预设阶数可以为2时，频域重用因子为4)。
以及，本公开实施例中，主要以“频域重用因子为：2，且预设阶数为：6”、“频域重用因子为：4，且预设阶数为：3”、“频域重用因子为：6，且预设阶数为：2”三种为实例进行了详细说明，具体可以参考后续实施例。但是，其他的组合情况也均在本公开的保护范围内。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
图1b为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图1b所示，该映射方法可以包括以下步骤：
步骤101b、根据频域重用因子、在频域上预设阶数的OCC、DMRS映射时的符号长度和DMRS映射时的映射方式确定DMRS的映射类型。
其中，关于频域重用因子、在频域上预设阶数的OCC的相关介绍可以参考上述实施例描述，本公开实施例在此不做赘述。
以及，在本公开的一个实施例之中，上述的DMRS映射时的符号长度包括单符号映射，或者，双符号映射。进一步的，在本公开的一个实施例之中，响应于DMRS映射时的符号长度为单符号映射， 该DMRS映射时的映射方式包括梳状映射或块状映射，响应于DMRS映射时的符号长度为双符号映射，该DMRS映射时的映射方式包括梳状映射、格状映射或块状映射。
由此可知，在本公开的一个实施例之中，针对于双符号映射的DMRS，引入了格状映射的形式，以便针对增加正交DMRS端口数的情况，在一定程度上弥补因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
需要说明的是，本公开实施例中，主要针对于“频域重用因子为：4，且预设阶数为：3”、“频域重用因子为：6，且预设阶数为：2”该二种情况下的双符号映射引入的格状映射的形式进行了详细说明，具体可以参考后续实施例。但是，其他的组合情况下的双符号映射时若也引入了格状映射则也在本公开的保护范围内。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
图2a为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图2a所示，该映射方法可以包括以下步骤：
步骤201、根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，其中，频域重用因子为：2，且该预设阶数为：6阶。
其中，在本公开的一个实施例之中，该频域重用因子为：2，且该预设阶数为：6阶时，通过如下的映射公式一将传输符号映射到对应的时频资源上：
Figure PCTCN2022089683-appb-000001
k＝12n+2k'+Δ
k′＝0,1,2,3,4,5
Figure PCTCN2022089683-appb-000002
n＝0，1，2
其中，
Figure PCTCN2022089683-appb-000003
为缩放因子，ω f(k′)为在频域上的OCC，ω t(l′)为在时域上的OCC，
Figure PCTCN2022089683-appb-000004
为DMRS在一个slot(时隙)中的时域位置，Δ为频域位置调整参数，k′为频域索引，l′为时域索引，k、l表示位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示端口，
Figure PCTCN2022089683-appb-000005
表示映射在RE(k，l)上的符号。
以及，在本公开的一个实施例之中，w f(k′)的预设阶数为6阶时，w f(k′)可以从如下的6阶正交码中任意选取4个列向量作为OCC码，比如以选取前4个列向量为例进行说明。或者，w f(k′)可以从如下的6阶正交码中选取全部的6个列向量，以支持多于当前支持的端口数两倍的DMRS端口数。或者，该w f(k′)的预设阶数为6阶时，也可以是其他类似的6阶正交码。需要说明的是，如下的6阶正交码中的任意两个列向量正交。
Figure PCTCN2022089683-appb-000006
以及，当w f(k′)从如上的6阶正交码中选取了前4个列向量时，表1为本公开实施例提供的ω f(k′)、ω t(l′)、Δ的具体取值情况。
表1
Figure PCTCN2022089683-appb-000007
则基于上述公式一和表1即可实现“频域重用因子为：2，且该预设阶数为：6阶”的DMRS映射。
进一步地，图2b为本公开实施例提供的一种基于公式一和表1进行单符号映射时的不同端口在时频资源上的分布示意图。如图2b所示，基于公式一和表1进行单符号映射时，包括有两个CDM(code division multiplexing，码分多路复用)group(组)，其中，每组CDM group内支持的正交的DMRS端口数量是4，则基于公式一和表1进行单符号映射时一共可以支持8个正交的DMRS端口。进一步地，基于公式一和表1的双符号映射类似，其中，基于公式一和表1的双符号映射时，每组CDM group内支持的正交的DMRS端口数量可以是8，则基于公式一和表1进行双符号映射时一共可以支持16个正交的DMRS端口。
以及，本公开实施例的方式是对现有协议中的DMRS type1的增强，由此，相比于相关技术type1中的单符号映射最多能支持4个正交的DMRS端口，双符号映射最多能支持8个正交的DMRS端口而言，采用本公开实施例不管是单符号映射还是双符号映射均能支持双倍于现有协议的正交DMRS端口，则可以满足相关联合传输的需求。此外，本公开实施例之中，针对频域重用因子为2的DMRS映射在频域上会采用6阶的OCC，从而可以确保各个端口实现频域正交，则确保了信道估计的性能。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及， 该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，在频域上通过引入较高阶的OCC，则可以增加DMRS映射所支持的正交的端口数，且可以使得各个端口实现频域正交，则确保了信道估计的性能。
图3a为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图3a所示，该映射方法可以包括以下步骤：
步骤301、根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，其中，频域重用因子为：4，且该预设阶数为：3阶。
其中，在本公开的一个实施例之中，该频域重用因子为：4，且该预设阶数为：3阶时，通过如下的映射公式二将传输符号映射到对应的时频资源上：
Figure PCTCN2022089683-appb-000008
k＝12n+4k'+Δ
k′＝0,1,2
Figure PCTCN2022089683-appb-000009
n＝0,1,...
其中，
Figure PCTCN2022089683-appb-000010
为缩放因子，ω f(k′)为在频域上的OCC，ω t(l′)为在时域上的OCC，
Figure PCTCN2022089683-appb-000011
为DMRS在一个slot(时隙)中的时域位置，Δ为频域位置调整参数，k′为频域索引，l′为时域索引，k、l表示位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示端口，
Figure PCTCN2022089683-appb-000012
表示映射在RE(k，l)上的符号。以及，在本公开的一个实施例之中，w f(k′)的预设阶数为3阶时，w f(k′)可以从如下的3阶正交码中任意选取2个列向量作为OCC码，比如以选取前2个列向量为例进行说明。或者，w f(k′)可以从如下的3阶正交码中选取全部的3个列向量，以支持多于当前支持的端口数两倍的DMRS端口数。或者，该w f(k′)的预设阶数为3阶时，也可以是其他类似的3阶正交码。需要说明的是，如下的3阶正交码中的任意两个列向量正交。
Figure PCTCN2022089683-appb-000013
以及，当w f(k′)从如上的3阶正交码中选取了前2个列向量时，表2为本公开实施例提供的ω f(k′)、ω t(l′)、Δ的具体取值情况。
表2
Figure PCTCN2022089683-appb-000014
Figure PCTCN2022089683-appb-000015
则基于上述公式二和表2即可实现“频域重用因子为：4，且该预设阶数为：3阶”的DMRS映射。
进一步地，图3b为本公开实施例提供的一种基于公式二和表2进行单符号映射时的不同端口在时频资源上的分布示意图，图3c为本公开实施例提供的一种基于公式二和表2进行双符号映射时的不同端口在时频资源上的分布示意图。如图3b所示，基于公式二和表2进行单符号映射时，包括有4个CDM group，其中，每组CDM group内支持的正交的DMRS端口数量是2，则基于公式二和表2进行单符号映射一共可以支持8个正交的DMRS端口。进一步地，如图3c所示，基于公式二和表2进行双符号映射，可以以块状的映射方式来映射该DMRS，同时，基于公式二和表2进行双符号映射，包括有4个CDM group(图3c中未示出)，其中，每组CDM group内支持的正交的DMRS端口数量是4(图3c中未示出)，则基于公式二和表2进行双符号映射一共可以支持16个正交的DMRS端口。
以及，本公开实施例的方式是对现有协议中的DMRS type1的增强，由此，相比于相关技术中type1的单符号映射最多能支持4个正交的DMRS端口，双符号映射最多能支持8个正交的DMRS端口而言，本公开实施例不管是单符号映射还是双符号映射均能支持双倍于现有协议的正交DMRS端口，则可以满足相关联合传输的需求。此外，本公开实施例之中，针对频域重用因子为4的DMRS映射在频域上会采用3阶的OCC，从而可以确保各个端口实现频域正交，则确保了信道估计的性能。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
图4为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图4所示，该映射方法可以包括以下步骤：
步骤401、根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，其中，频域重用因子为：4，且该预设阶数为：3阶，以及，当DMRS映射时的符号长度为双符号映射，以格状映射的方式来映射该DMRS。
其中，在本公开的一个实施例之中，该频域重用因子为：4，且该预设阶数为：3阶时，通过如下的映射公式三将传输符号映射到对应的时频资源上：
Figure PCTCN2022089683-appb-000016
k＝12n+4k'+Δ
k′＝0,1，2
Figure PCTCN2022089683-appb-000017
n＝0,1,...
其中，
Figure PCTCN2022089683-appb-000018
为缩放因子，ω f(k′)为在频域上的OCC，ω t(l′)为在时域上的OCC，
Figure PCTCN2022089683-appb-000019
为DMRS在一个slot(时隙)中的时域位置，Δ为频域位置调整参数，k′为频域索引，l′为时域索引，k、l表示位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示端口，
Figure PCTCN2022089683-appb-000020
表示映射在RE(k，l)上的符号。以及，在本公开的一个实施例之中，w f(k′)的预设阶数为3阶时，w f(k′)可以从如下的3阶正交码中任意选取2个列向量作为OCC码，比如以选取前2个列向量为例进行说明。或者，w f(k′)可以从如下的3阶正交码中选取全部的3个列向量，以支持多于当前支持的端口数两倍的DMRS端口数。或者，该w f(k′)的预设阶数为3阶时，也可以是其他类似的3阶正交码。需要说明的是，如下的3阶正交码中的任意两个列向量正交。
Figure PCTCN2022089683-appb-000021
以及，当w f(k′)从如上的3阶正交码中选取了前2个列向量时，表3为本公开实施例提供的频域重用因子为：4，且该预设阶数为：3阶的双符号映射下以格状映射的方式来映射DMRS时，ω t(l′)、Δ的具体取值情况。以及其他参数(如ω f(k′))的取值情况可以参考上述表2。
表3
Figure PCTCN2022089683-appb-000022
Figure PCTCN2022089683-appb-000023
则基于上述公式三和表3即可实现“频域重用因子为：4，且该预设阶数为：3阶”的格状的双符号的DMRS映射。
进一步地，图5为本公开实施例提供的一种基于公式三和表3进行格状的双符号映射时的不同端口在时频资源上的分布示意图。其中，针对于双符号的DMRS映射，通过引入格状映射方式，则针对增加正交DMRS端口数的情况，可以一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
需要说明的是，上述图5仅一种示例，其他格状映射方式也在本公开实施例的保护范围内。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
图6为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图6所示，该映射方法可以包括以下步骤：
步骤601、根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，其中，频域重用因子为：6，且该预设阶数为：2阶，以及，当DMRS映射时的符号长度为双符号映射，以格状映射的方式来映射该DMRS。
其中，在本公开的一个实施例之中，该频域重用因子为：6，且该预设阶数为：2阶时，通过如下的映射公式四将传输符号映射到对应的时频资源上：
Figure PCTCN2022089683-appb-000024
k＝12n+6k'+Δ
k′＝0,1
Figure PCTCN2022089683-appb-000025
n＝0,1
其中，
Figure PCTCN2022089683-appb-000026
为缩放因子，ω f(k′)为在频域上的OCC，ω t(l′)为在时域上的OCC，
Figure PCTCN2022089683-appb-000027
为DMRS在一个slot(时隙)中的时域位置，Δ为频域位置调整参数，k′为频域索引，l′为时域索引，k、l表示位置，r(.)表示要传输的序列，n表示要传输的序列的索引，p表示端口，
Figure PCTCN2022089683-appb-000028
表示映射在RE(k，l)上的符号。
以及，表4为本公开实施例提供的频域重用因子为：6，且该预设阶数为：2阶的双符号映射下以格状映射的方式来映射DMRS时，ω t(l′)、Δ的具体取值情况。
表4
Figure PCTCN2022089683-appb-000029
则基于上述公式四和表4即可实现“频域重用因子为：6，且该预设阶数为：2阶”的格状的双符号的DMRS映射。
进一步地，图7为本公开实施例提供的两种基于公式四和表4进行格状的双符号映射时的不同端口在时频资源上的分布示意图。如图7所示，基于公式四和表4进行双符号映射时，通过引入格状映射方式，则针对增加正交DMRS端口数的情况，可以一定程度上弥补了因每个正交DMRS端口频域资源数 减少后带来的信道估计性能损失。需要说明的是，上述图7仅一种示例，其他格状映射方式也在本公开实施例的保护范围内。
以及，如图7所示，基于公式四和表4进行双符号映射，包括有6个CDM group(图7中未示出)，其中，每组CDM group内支持的正交的DMRS端口数量是4(图7中未示出)，则基于公式四和表4进行双符号映射一共可以支持24个正交的DMRS端口。同理的，基于公式四和表4进行单符号映射，包括有6个CDM group，其中，每组CDM group内支持的正交的DMRS端口数量是2，则基于公式四和表4进行单符号映射一共可以支持12个正交的DMRS端口。
以及，本公开实施例的方式是对现有协议中的DMRS type2的增强，由此，相比于相关技术中type2的单符号映射最多能支持6个正交的DMRS端口，双符号映射最多能支持12个正交的DMRS端口而言，本公开实施例不管是单符号映射还是双符号映射均能双倍于现有协议的正交DMRS端口，则可以满足相关联合传输的需求。此外，本公开实施例之中，针对频域重用因子为6的DMRS映射在频域上会采用2阶的OCC，从而可以确保各个端口实现频域正交，则确保了信道估计的性能。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
图8为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图8所示，该映射方法可以包括以下步骤：
步骤801、确定DMRS映射时的符号长度为双符号映射，且以格状映射的方式来映射所述DMRS。
其中，关于步骤801的详细介绍可以参考上述实施例描述。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
图9为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图9所示，该映射方法可以包括以下步骤：
步骤901、确定DMRS映射时的符号长度为双符号映射，且以格状映射的方式来映射所述DMRS，所述预设阶数为：3阶，且所述频域重用因子为：4。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
图10为本公开实施例所提供的一种映射方法的流程示意图，该方法可以由UE或网络设备执行，如图10所示，该映射方法可以包括以下步骤：
步骤1001、确定DMRS映射时的符号长度为双符号映射，且以格状映射的方式来映射所述DMRS，所述预设阶数为：2阶，且所述频域重用因子为：6。
综上所述，在本公开实施例提供的映射方法之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
此外，本公开实施例之中，针对于双符号的DMRS映射，还引入了格状映射方式，则针对增加正交DMRS端口数的情况，一定程度上弥补了因每个正交DMRS端口频域资源数减少后带来的信道估计性能损失。
此外，在本公开的一个实施例之中，网络设备可以向UE发送指示信息，该指示信息用于指示上述的DMRS的映射类型对应的频域重用因子、在频域上的OCC、是否格状映射中的至少一种。
以及，在本公开的另一个实施例之中，UE可以接收网络设备发送的指示信息，该，该指示信息用于指示上述的DMRS的映射类型对应的频域重用因子、在频域上的OCC、是否格状映射中的至少一种。
图11为本公开实施例所提供的一种映射装置的结构示意图，如图11所示，装置可以包括：
确定模块，用于根据频域重用因子和在频域上预设阶数的正交覆盖码OCC确定解调参考信号DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，所述频域重用因子用于表示在基本单元中通过频分复用FDM方式支持的正交端口数，所述频域重用因子和所述预设阶数均大于或等于2，且所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射。
综上所述，在本公开实施例提供的映射装置之中，会根据频域重用因子和在频域上预设阶数的OCC来确定DMRS的映射类型，不同映射类型的DMRS对应不同的频域重用因子和预设阶数的OCC，以及，该频域重用因子用于表示在基本单元中通过FDM方式支持的正交端口数，其中，该频域重用因子和预设阶数均大于或等于2。由此可知，本公开实施例之中，通过使得频域重用因子数大于等于2(即减少每个DMRS端口的频域资源数)，则可以增加DMRS映射所支持的正交的端口数。同时，通过调节在频域上OCC的预设阶数，来使得各个端口实现频域正交，则确保了信道估计的性能。
可选的，在本公开的一个实施例之中，所述频域重用因子为：2。
可选的，在本公开的一个实施例之中，所述频域重用因子为：4。
可选的，在本公开的一个实施例之中，所述频域重用因子为：6。
可选的，在本公开的一个实施例之中，所述预设阶数为：6阶。
可选的，在本公开的一个实施例之中，所述预设阶数为：3阶。
可选的，在本公开的一个实施例之中，所述预设阶数为：2阶。
可选的，在本公开的一个实施例之中，所述确定模块，还用于：
根据频域重用因子、在频域上预设阶数的OCC、DMRS映射时的符号长度和DMRS映射时的映射方式确定DMRS的映射类型；
其中，所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射；以及，响应于所述DMRS映射时的符号长度为单符号映射，所述DMRS映射时的映射方式包括梳状映射或块状映射，响应于所述DMRS映射时的符号长度为双符号映射，所述DMRS映射时的映射方式包括梳状映射、格状映射或块状映射。
可选的，在本公开的一个实施例之中，所述DMRS映射时的符号长度为双符号映射，且所述DMRS 映射时的映射方式为格状映射。
图12是本公开一个实施例所提供的一种用户设备UE1200的框图。例如，UE1200可以是移动电话，计算机，数字广播终端设备，消息收发设备，游戏控制台，平板设备，医疗设备，健身设备，个人数字助理等。
参照图12，UE1200可以包括以下至少一个组件：处理组件1202，存储器1204，电源组件1206，多媒体组件1208，音频组件1210，输入/输出(I/O)的接口1212，传感器组件1213，以及通信组件1216。
处理组件1202通常控制UE1200的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1202可以包括至少一个处理器1220来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1202可以包括至少一个模块，便于处理组件1202和其他组件之间的交互。例如，处理组件1202可以包括多媒体模块，以方便多媒体组件1208和处理组件1202之间的交互。
存储器1204被配置为存储各种类型的数据以支持在UE1200的操作。这些数据的示例包括用于在UE1200上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1204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，如静态随机存取存储器(SRAM)，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)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1206为UE1200的各种组件提供电力。电源组件1206可以包括电源管理系统，至少一个电源，及其他与为UE1200生成、管理和分配电力相关联的组件。
多媒体组件1208包括在所述UE1200和用户之间的提供一个输出接口的屏幕。在一些实施例中，屏幕可以包括液晶显示器(LCD)和触摸面板(TP)。如果屏幕包括触摸面板，屏幕可以被实现为触摸屏，以接收来自用户的输入信号。触摸面板包括至少一个触摸传感器以感测触摸、滑动和触摸面板上的手势。所述触摸传感器可以不仅感测触摸或滑动动作的边界，而且还检测与所述触摸或滑动操作相关的唤醒时间和压力。在一些实施例中，多媒体组件1208包括一个前置摄像头和/或后置摄像头。当UE1200处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变焦能力。
音频组件1210被配置为输出和/或输入音频信号。例如，音频组件1210包括一个麦克风(MIC)，当UE1200处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1204或经由通信组件1216发送。在一些实施例中，音频组件1210还包括一个扬声器，用于输出音频信号。
I/O接口1212为处理组件1202和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1213包括至少一个传感器，用于为UE1200提供各个方面的状态评估。例如，传感器组件1213可以检测到设备1200的打开/关闭状态，组件的相对定位，例如所述组件为UE1200的显示器和小键盘，传感器组件1213还可以检测UE1200或UE1200一个组件的位置改变，用户与UE1200接触的存在或不存在，UE1200方位或加速/减速和UE1200的温度变化。传感器组件1213可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1213还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件1213还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1216被配置为便于UE1200和其他设备之间有线或无线方式的通信。UE1200可以接入基于通信标准的无线网络，如WiFi，2G或3G，或它们的组合。在一个示例性实施例中，通信组件1216经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。在一个示例性实施例中，所述通信组件1216还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，UE1200可以被至少一个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处 理器或其他电子元件实现，用于执行上述方法。
图13是本公开实施例所提供的一种网络侧设备1300的框图。例如，网络侧设备1300可以被提供为一网络侧设备。参照图13，网络侧设备1300包括处理组件1311，其进一步包括至少一个处理器，以及由存储器1332所代表的存储器资源，用于存储可由处理组件1322的执行的指令，例如应用程序。存储器1332中存储的应用程序可以包括一个或一个以上的每一个对应于一组指令的模块。此外，处理组件1310被配置为执行指令，以执行上述方法前述应用在所述网络侧设备的任意方法，例如，如图1所示方法。
网络侧设备1300还可以包括一个电源组件1326被配置为执行网络侧设备1300的电源管理，一个有线或无线网络接口1350被配置为将网络侧设备1300连接到网络，和一个输入输出(I/O)接口1358。网络侧设备1300可以操作基于存储在存储器1332的操作系统，例如Windows Server TM，Mac OS XTM，Unix TM,Linux TM，Free BSDTM或类似。
上述本公开提供的实施例中，分别从网络侧设备、UE的角度对本公开实施例提供的方法进行了介绍。为了实现上述本公开实施例提供的方法中的各功能，网络侧设备和UE可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
上述本公开提供的实施例中，分别从网络侧设备、UE的角度对本公开实施例提供的方法进行了介绍。为了实现上述本公开实施例提供的方法中的各功能，网络侧设备和UE可以包括硬件结构、软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能可以以硬件结构、软件模块、或者硬件结构加软件模块的方式来执行。
本公开实施例提供的一种通信装置。通信装置可包括收发模块和处理模块。收发模块可包括发送模块和/或接收模块，发送模块用于实现发送功能，接收模块用于实现接收功能，收发模块可以实现发送功能和/或接收功能。
通信装置可以是终端设备(如前述方法实施例中的终端设备)，也可以是终端设备中的装置，还可以是能够与终端设备匹配使用的装置。或者，通信装置可以是网络设备，也可以是网络设备中的装置，还可以是能够与网络设备匹配使用的装置。
本公开实施例提供的另一种通信装置。通信装置可以是网络设备，也可以是终端设备(如前述方法实施例中的终端设备)，也可以是支持网络设备实现上述方法的芯片、芯片系统、或处理器等，还可以是支持终端设备实现上述方法的芯片、芯片系统、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
通信装置可以包括一个或多个处理器。处理器可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对通信装置(如，网络侧设备、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，通信装置中还可以包括一个或多个存储器，其上可以存有计算机程序，处理器执行所述计算机程序，以使得通信装置执行上述方法实施例中描述的方法。可选的，所述存储器中还可以存储有数据。通信装置和存储器可以单独设置，也可以集成在一起。
可选的，通信装置还可以包括收发器、天线。收发器可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，通信装置中还可以包括一个或多个接口电路。接口电路用于接收代码指令并传输至处理器。处理器运行所述代码指令以使通信装置执行上述方法实施例中描述的方法。
在一种实现方式中，处理器中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，处理器可以存有计算机程序，计算机程序在处理器上运行，可使得通信装置执行上述方法实施例中描述的方法。计算机程序可能固化在处理器中，该种情况下，处理器可能由硬件实现。
在一种实现方式中，通信装置可以包括电路，所述电路可以实现前述方法实施例中发送或接收或者通信的功能。本公开中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的通信装置可以是网络设备或者终端设备(如前述方法实施例中的终端设备)，但本公开中描述的通信装置的范围并不限于此，而且通信装置的结构可以不受的限制。通信装置可以是独立的设备或者可以是较大设备的一部分。例如所述通信装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片系统或子系统；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于通信装置可以是芯片或芯片系统的情况，芯片包括处理器和接口。其中，处理器的数量可以是一个或多个，接口的数量可以是多个。
可选的，芯片还包括存储器，存储器用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本公开实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个系统的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现所述的功能，但这种实现不应被理解为超出本公开实施例保护的范围。
本公开还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本公开还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行所述计算机程序时，全部或部分地产生按照本公开实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机程序可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本公开中涉及的第一、第二等各种数字编号仅为描述方便进行的区 分，并不用来限制本公开实施例的范围，也表示先后顺序。
本公开中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本公开不做限制。在本公开实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本发明的其它实施方案。本公开旨在涵盖本发明的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本发明的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (14)

  1. 一种映射方法，其特征在于，所述方法包括：
    根据频域重用因子和在频域上预设阶数的正交覆盖码OCC确定解调参考信号DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，所述频域重用因子用于表示在基本单元中通过频分复用FDM方式支持的正交端口数，所述频域重用因子和所述预设阶数均大于或等于2。
  2. 如权利要求1所述的方法，其特征在于，所述频域重用因子为：2。
  3. 如权利要求1所述的方法，其特征在于，所述频域重用因子为：4。
  4. 如权利要求1所述的方法，其特征在于，所述频域重用因子为：6。
  5. 如权利要求1所述的方法，其特征在于，所述预设阶数为：6阶。
  6. 如权利要求1所述的方法，其特征在于，所述预设阶数为：3阶。
  7. 如权利要求1所述的方法，其特征在于，所述预设阶数为：2阶。
  8. 如权利要求1-7任一所述的方法，其特征在于，所述根据频域重用因子和在频域上预设阶数的OCC确定DMRS的映射类型，包括：
    根据频域重用因子、在频域上预设阶数的OCC、DMRS映射时的符号长度和DMRS映射时的映射方式确定DMRS的映射类型；
    其中，所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射；
    响应于所述DMRS映射时的符号长度为单符号映射，所述DMRS映射时的映射方式包括梳状映射或块状映射；
    响应于所述DMRS映射时的符号长度为双符号映射，所述DMRS映射时的映射方式包括梳状映射、格状映射或块状映射。
  9. 如权利要求8所述的方法，其特征在于，所述DMRS映射时的符号长度为双符号映射，且所述DMRS映射时的映射方式为格状映射。
  10. 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和在频域上预设阶数的正交覆盖码OCC确定解调参考信号DMRS的映射类型，其中，不同映射类型的DMRS对应不同的频域重用因子和预设阶数，所述频域重用因子用于表示在基本单元中通过频分复用FDM方式支持的正交端口数，所述频域重用因子和所述预设阶数均大于或等于2，且所述DMRS映射时的符号长度包括单符号映射，或者，双符号映射。
  11. 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8任一所述的映射方法。
  12. 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8任一所述的映射方法。
  13. 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9任一所述的映射方法。
  14. 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9任一所述的映射方法。
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"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical channels and modulation (Release 17)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 38.211, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. V17.1.0, 1 April 2022 (2022-04-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 135, XP052145701 *

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