Wireless communication method, electronic device and computer program product

Abstract

Provided are a wireless communication method, an electronic device and a computer program product, the method comprising: receiving, by a UE, a signaling from a transmission node, the signaling being used to indicate DMRS information; and the UE acquires DMRS information according to the signaling and determines channel transmission. The problem that more DMRS ports cannot be realized and mapped in related technologies is solved, and the effect of realizing and mapping more DMRS ports is achieved.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication, in particular, to a wireless communication method, an electronic device and a computer program product. BACKGROUND

[0002] In a wireless communication system, dedicated demodulation reference signal (DMRS) is used to demodulate a channel when transmitting data. Different demodulation signal ports are associated with different layers of transmitted data. In the current transmission protocol, each user can transmit a maximum of 8 layers, that is, 8 DMRS ports, and in a multi-user scenario, a maximum of 24 orthogonal DMRS ports can be supported for multiple users.

[0003] For the development of wireless communication systems, more data needs to be transmitted on limited resources, so more data transmission needs to be supported, that is, more DMRS ports need to be supported, and therefore how to generate or map these DMRS ports is a further research content. SUMMARY

[0004] Embodiments of the present application provide a wireless communication method, an electronic device and a computer program product to at least solve the problem that more DMRS ports cannot be implemented and mapped in the related art.

[0005] According to an embodiment of the present application, a wireless communication method is provided, comprising: a user terminal (UE) receiving signaling from a transmission node, the signaling being used to indicate dedicated demodulation reference signal (DMRS) information; the UE obtaining the DMRS information according to the signaling and determining channel transmission.

[0006] According to another embodiment of the present application, an electronic device is also provided, comprising a memory and a processor, the memory having a computer program stored therein, and the processor being configured to run the computer program to perform the steps in any of the method embodiments described above.

[0007] According to still another embodiment of the present application, a computer program product is also provided, comprising a computer program, which, when executed by a processor, implements the steps in any of the method embodiments described above.

[0008] Through the present application, a wireless communication method is provided, in which a UE receives signaling from a transmission node, the signaling being used to indicate DMRS information; the UE obtains the DMRS information according to the signaling and determines channel transmission. The problem that more DMRS ports cannot be implemented and mapped in the related art is solved, and the effect of implementing and mapping more DMRS ports is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 is a principle diagram of single-symbol type 1 DMRS in the related art Rel-18 protocol;

[0010] Figure 2 is a principle diagram of single-symbol type 2 DMRS in the related art Rel-18 protocol;

[0011] Figure 3 is a hardware structure block diagram of a mobile terminal of the wireless communication method of the embodiment of the present application;

[0012] Figure 4 is a flow chart of the wireless communication method of the embodiment of the present application;

[0013] Figure 5 is a principle diagram of one DMRS port occupying 4 subcarriers in one PRB of the embodiment of the present application;

[0014] Figure 6 is a principle diagram of one DMRS port occupying 2 subcarriers in one PRB of the embodiment of the present application;

[0015] Figure 7 is a principle diagram of one DMRS port occupying 3 subcarriers in one PRB of the embodiment of the present application;

[0016] Figure 8 is a principle diagram of one DMRS port occupying 3 subcarriers in two PRBs of the embodiment of the present application;

[0017] Figure 9 is a principle diagram of one DMRS port occupying 1 subcarrier in one PRB of the embodiment of the present application;

[0018] Figure 10 is a diagram of time-division multiplexed DMRS ports of the embodiment of the present application. DETAILED DESCRIPTION

[0019] Embodiments of the present application will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0020] It should be noted that the terms “first”, “second”, and the like in the specification and claims of the present application and in the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0021] In the related art, in a new radio (NR) system, there are two types of DMRS, type 1 and type 2, which are configured by high-layer radio resource control (RRC) signaling. For different DMRS types, DMRS ports occupy different resource positions. For example, for DMRS type 1, the DMRS ports of the same code division multiplexing (CDM) group are mapped into a comb structure, that is, they occupy resource elements (REs) Nos. 0, 2, 4, 6, 8, and 10 in a physical resource block (PRB), and the DMRS ports in another CDM group occupy other REs Nos. 1, 3, 5, 7, 9, and 11. For type 2 DMRS, up to 3 CDM groups are supported, and each CDM group is mapped to adjacent frequency domain resource elements.

[0022] In the related art, in Rel-15, for single-symbol DMRS, that is, each DMRS time domain symbol is not connected, each CDM group supports up to 2 DMRS ports, so for single-symbol DMRS, a total of 2 CDM groups and a total of 4 DMRS ports are supported, and the 2 DMRS ports in each group are multiplexed by a length-2 frequency division orthogonal cover code (FD-OCC). Similarly, for type 2 DMRS, a total of 3 CDM groups and a total of 6 DMRS ports are supported. For double-symbol DMRS, that is, two adjacent symbols are used for DMRS mapping, in addition to the length-2 FD-OCC, a length-2 time division orthogonal cover code (TD-OCC) is also supported between the two adjacent time domain symbols, that is, each CDM group supports up to 4 DMRS ports, for type 1 DMRS, up to 8 DMRS ports are supported, and for type 2, up to 12 DMRS ports are supported.

[0023] In the related art, in Rel-18, in order to enhance the transmission capability of uplink and downlink, more orthogonal DMRS ports are supported, and in the case of the same mapping pattern, a longer frequency domain FD-OCC is supported, that is, the FD-OCC length is 4, so each CDM group supports up to 4 DMRS ports in single-symbol and up to 8 DMRS ports in double-symbol. Figure 1This is a schematic diagram illustrating the principle of the single-symbol type 1DMRS in the Rel-18 protocol of related technologies, such as... Figure 1 As shown, a total of 2 CDM groups are supported for Type 1, thus supporting a maximum of 8 DMRS ports per symbol. For Type 1 DMRS with two symbols, the time-domain TD-OCC length is still 2, so a CDM group can support a maximum of 8 orthogonal DMRS ports, for a total of 16 orthogonal DMRS ports across 2 CDM groups.

[0024] In related technologies, Figure 2 This is a schematic diagram illustrating the principle of single-symbol type 2DMRS in the Rel-18 protocol of related technologies, such as... Figure 2 As shown, for Rel-18 Type 2 DMRS ports, similar to Type 1, single-symbol DMRS supports a maximum of 4 orthogonal DMRS ports per CDM group, and 3 CDM groups support a maximum of 12 orthogonal DMRS ports. Double-symbol DMRS supports a maximum of 8 orthogonal DMRS ports per CDM group. Type 2 DMRS supports a maximum of 3 orthogonal CDM groups, therefore supporting a maximum of 24 orthogonal DMRS ports in total.

[0025] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 3 This is a hardware structure block diagram of a mobile terminal for a wireless communication method according to an embodiment of the present invention, such as... Figure 3 As shown, a mobile terminal may include one or more ( Figure 3 Only one is shown in the diagram. A processor 302 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 304 for storing data are also shown. The mobile terminal may further include a transmission device 306 for communication functions and an input / output device 308. Those skilled in the art will understand that... Figure 3 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 3 The more or fewer components shown, or having the same Figure 3 The different configurations shown.

[0026] The memory 304 can be used to store computer programs, such as software programs of application software and modules, for example, a computer program corresponding to the wireless communication method in the embodiments of the present application. The processor 302 can execute various function applications and data processing, i.e., implement the method described above, by running the computer program stored in the memory 304. The memory 304 can include a high-speed random access memory, and can further include a nonvolatile memory, such as one or more magnetic storage devices, flash memories, or other nonvolatile solid-state memories. In some examples, the memory 304 can further include a memory remotely arranged with respect to the processor 302, which can be connected to the mobile terminal through a network. Examples of the network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0027] The transmission device 306 is configured to receive or send data via a network. Examples of the network include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 306 includes a network adapter (NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 306 can be a radio frequency (RF) module, which is configured to communicate with the Internet in a wireless manner.

[0028] The embodiments of the present application provide a wireless communication method, Figure 4 The flowchart of the wireless communication method in the embodiments of the present application is shown in FIG. 4, which includes the following steps: Figure 4

[0029] In step S402, a user terminal (UE) receives signaling from a transmission node, and the signaling is used to indicate DMRS information.

[0030] In one example embodiment, the DMRS information includes at least one of the following: a DMRS port, a DMRS sequence, a multiplexing manner between DMRS ports, a DMRS port pattern, and a number of DMRS code division multiplexing groups.

[0031] In one example embodiment, the multiplexing manner between DMRS ports includes at least one of the following: code division multiplexing, time division multiplexing, and frequency division multiplexing. The code division multiplexing includes frequency domain code division multiplexing of different frequency domain orthogonal cover codes (FD-OCC) associated with the DMRS ports, or time domain code division multiplexing of different time domain orthogonal cover codes (TD-OCC) associated with the DMRS ports.

[0032] ​In an example embodiment, the length of the frequency domain orthogonal cover code (FD-OCC) associated with the DMRS port association comprises at least one of: a length of 1 of the FD-OCC; a length of 2 of the FD-OCC; a length of 3 of the FD-OCC; a length of 4 of the FD-OCC; a length of 6 of the FD-OCC; a length of 8 of the FD-OCC.

[0033] In an example embodiment, the length of the time domain orthogonal cover code (TD-OCC) associated with the DMRS port association comprises at least one of: a length of 1 of the TD-OCC; a length of 2 of the TD-OCC; a length of 3 of the TD-OCC; a length of 4 of the TD-OCC.

[0034] In an example embodiment, the number of ports of the DMRS port association comprises at least one of: a number of 8 of the DMRS ports; a number of 12 of the DMRS ports; a number of 16 of the DMRS ports; a number of 24 of the DMRS ports; a number of 32 of the DMRS ports; a number of 48 of the DMRS ports.

[0035] In an example embodiment, when the length of the FD-OCC is 1, the length of the TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N1 comprises one of: 1, 2, 4, 8, 12, 16, 24, 32, 48, 64; or the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N2 comprises one of: 1, 2, 4, 6, 8, 12, 16, 24, 32; or the length of the TD-OCC is 3, the number of CDM groups is N3, and the resource reuse manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N3 comprises one of: 1, 2, 4, 6, 8, 12, 16; or the length of the TD-OCC is 4, the number of CDM groups is N4, and the resource reuse manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N4 comprises one of: 1, 2, 3, 4, 6, 8, 12, 16.

[0036] In an example embodiment of the present application, for example, the length of the FD-OCC is 2 and the length of the TD-OCC is 1, at this time, 4 CDM groups are supported, each group has a maximum of 2 DMRS ports, and 2 or 4 of the 4 CDM groups are frequency division multiplexed, when 2 of the 4 CDM groups are frequency division multiplexed, then at this time, there should be different CDM groups that are time division multiplexed in the time domain.

[0037] In an example embodiment, in case that the length of FD-OCC is 2, the length of TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N1 includes one of the following: 1, 2, 4, 6, 8, 12, 16, 24, 32; or, the length of TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N2 includes one of the following: 1, 2, 3, 4, 6, 8, 12, 16; or, the length of TD-OCC is 3, the number of CDM groups is N3, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N3 includes one of the following: 1, 2, 4, 6, 8, 12; or, the length of TD-OCC is 4, the number of CDM groups is N4, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N4 includes one of the following: 1, 2, 3, 4, 6, 8.

[0038] In an example embodiment, in case that the length of FD-OCC is 3, the length of TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N1 includes one of the following: 1, 2, 4, 8, 12, 16. Or, the length of TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N2 includes one of the following: 1, 2, 4, 6, 8. Or, the length of TD-OCC is 3, the number of CDM groups is N3, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N3 includes one of the following: 1, 2, 4, 6. Or, the length of TD-OCC is 4, the number of CDM groups is N4, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N4 includes one of the following: 1, 2, 3, 4.

[0039] In an example embodiment, in case that the length of FD-OCC is 6, the length of TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N1 includes one of the following: 1, 2, 4, 6, 8; or the length of TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N2 includes one of the following: 1, 2, 3, 4.

[0040] In an example embodiment, in case that the length of FD-OCC is 6, the length of TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N1 includes one of the following: 1, 2, 4, 6, 8; or the length of TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N2 includes one of the following: 1, 2, 3, 4.

[0041] In an example embodiment, in case that the length of FD-OCC is 6, the length of TD-OCC is 1, the number of CDM groups is N1, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N1 includes one of the following: 1, 2, 4, 6, 8; or the length of TD-OCC is 2, the number of CDM groups is N2, and the resource reuse manner between CDM groups is frequency division multiplexing or the combination of frequency division multiplexing and time division multiplexing, the value of N2 includes one of the following: 1, 2, 3, 4.

[0042] In an example embodiment, the multiplexing manner between the CDM groups comprises at least one of the following: N1, N2, N3 or N4 CDM groups are frequency division multiplexed; N11 CDM groups in N1 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N11 CDM groups; N21 CDM groups in N2 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N21 CDM groups; N31 CDM groups in N3 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N31 CDM groups; N41 CDM groups in N4 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N41 CDM groups; wherein N11 is an integer less than N1, N21 is an integer less than N2, N31 is an integer less than N3, and N41 is an integer less than N4.

[0043] In an example embodiment, the at least one DMRS port indicated by the signaling is mapped on at least one of the following frequency domain resources REs: 4 REs evenly distributed in each 1 physical resource block (PRB); 3 REs evenly distributed in each 1 PRB; a preset number of subcarriers or REs evenly distributed, adjacently distributed or interval distributed in each 1 PRB; only 1 RE in each 1 PRB; 3 REs in each 2 PRBs; 1, 2, 4, 6 or 8 REs in each 2 PRBs, wherein the 1, 2, 4, 6 or 8 REs are adjacent REs or REs with a certain interval.

[0044] In an example embodiment, when one CDM group is mapped on multiple PRBs, the number of PRBs is the least common multiple of a first RE number and a second RE number, wherein the first RE number is the number of REs mapped by one CDM group, and the second RE number is the number of REs supported by one PRB for mapping one CDM group.

[0045] In an embodiment of the present application, when one CDM group is mapped on multiple PRBs, the number of scheduled PRBs needs to be limited to a certain number, for example, the least common multiple of the number of REs occupied by the CDM group and the number of resource units supported by one PRB for mapping one CDM group, and the least common multiple of the resource units corresponds to the number of PRBs.

[0046] In an example embodiment, the multiplexing manner among the DMRS ports indicated by the signaling comprises at least one of the following: the DMRS ports of adjacent OFDM time domain symbols adopt TD-OCC multiplexing; different DMRS ports or CDM groups adopt frequency division multiplexing or time division multiplexing. When the different DMRS ports or CDM groups adopt time division multiplexing, the DMRS ports or CDM groups are mapped on adjacent OFDM symbols or are spaced apart by a certain OFDM symbol. When the different DMRS ports or CDM groups adopt time division multiplexing, the different DMRS ports or CDM groups adopt cyclic mapping or sequential mapping.

[0047] In an example embodiment, the DMRS information indication is based on UE capability, wherein the UE capability comprises at least one of the following: maximum number of DMRS ports; DMRS type; support of an artificial intelligence or deep learning based model; maximum or minimum number of mapping resources of DMRS.

[0048] At step S404, the UE acquires DMRS information according to the signaling, and determines channel transmission.

[0049] In an example embodiment, the channel transmission comprises at least one of the following: downlink channel demodulation; uplink channel sending.

[0050] Through the above steps, a wireless communication method is provided, which comprises the following steps: a UE receives signaling from a transmission node, the signaling being used to indicate DMRS information; the UE acquires DMRS information according to the signaling, and determines channel transmission. The method solves the problem that more DMRS ports cannot be implemented and mapped in the related art, and achieves the effect of implementing and mapping more DMRS ports.

[0051] Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software and a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better embodiment. Based on such understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disk, or an optical disk), and includes a plurality of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device) to execute the method described in each embodiment of the present application.

[0052] A wireless communication apparatus is also provided in the embodiments of the present application, which is configured to implement the embodiments and preferred embodiments described above. As used in the following, the term "module" can refer to a combination of software and / or hardware configured to implement a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

[0053] The wireless communication apparatus provided by the embodiments of the present application can comprise a receiving module and a determining module. The receiving module is configured to receive signaling from a transmission node, the signaling being used to indicate DMRS information. The determining module is configured to obtain the DMRS information according to the signaling, and determine channel transmission.

[0054] In the embodiments of the present application, the wireless communication apparatus described above can further comprise different modules, and the naming and function division of the modules can be selected in different ways according to actual conditions, which are not specifically limited here.

[0055] It should be noted that the modules described above can be implemented by software or hardware, and for the latter, the implementation can be achieved in the following ways, but is not limited to this: all the modules are located in the same processor; or, the modules are located in different processors in any combination.

[0056] The embodiments of the present application further provide a computer readable storage medium, which stores a computer program. The computer program is configured to execute the steps in any of the method embodiments described above when running.

[0057] In an example embodiment, the computer readable storage medium described above can include, but is not limited to, a U disk, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store computer programs.

[0058] The embodiments of the present application further provide an electronic device, which comprises a memory and a processor. The memory stores a computer program, and the processor is configured to execute the computer program to perform the steps in any of the method embodiments described above.

[0059] In an example embodiment, the electronic device described above can further comprise a transmission device and an input / output device. The transmission device is connected to the processor, and the input / output device is connected to the processor.

[0060] The embodiment of the present application further provides a computer program product comprising a computer program, which, when executed by a processor, implements the steps in any of the method embodiments described above.

[0061] In an exemplary embodiment, the computer program product described above comprises a non-volatile computer readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the method described in various embodiments of the present application.

[0062] The specific examples in the embodiment can refer to the examples described in the above embodiments and exemplary implementation manners, which will not be described herein again.

[0063] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be realized by general computing devices, which can be concentrated on a single computing device or distributed on a network composed of multiple computing devices, and can be realized by program codes executable by the computing devices, so that they can be stored in storage devices and executed by the computing devices, and in some cases, the steps shown or described can be executed in different sequences, or they can be manufactured into individual integrated circuit modules or a single integrated circuit module. Therefore, the present application is not limited to any specific combination of hardware and software.

[0064] In order to enable those skilled in the art to better understand the technical solutions of the present application, different embodiments are described below.

[0065] Embodiment one

[0066] In the embodiment of the present application, the terminal receives the DMRS indication of the base station, determines the related DMRS port in the uplink or downlink transmission and the time-frequency domain resource position and multiplexing mode corresponding to each port.

[0067] The DMRS port is from at least one of a total of 8 DMRS ports. At this time, the FD-OCC or TD-OCC supports a maximum length of 2, or a length of 1, wherein the FD-OCC or TD-OCC length of 1 can be explained as not enabling the Orthogonal Cover Code (OCC) function, or the OCC code is represented as [1, 1].

[0068] For the FD-OCC length of 2, the maximum support of 2 DMRS ports in one CDM group at this time, if the maximum support of 8 DMRS ports is double symbol, then 4 DMRS ports are supported at this time in single symbol.

[0069] For FD-OCC length of 1, then maximum 1 DMRS port in frequency domain is supported in one CDM group, or for single symbol DMRS, all DMRS ports in one symbol are frequency division multiplexed.

[0070] For TD-OCC length of 1 or 2, similar to FD-OCC length, if TD-OCC length is 2, one DMRS port is mapped in different time domain symbols with a TD-OCC length of 2, the symbols can be adjacent or separated by at least one time domain, if TD-OCC length is 1, different DMRS ports can be mapped in different time domain symbols, or all mapped in the same time domain symbol.

[0071] Therefore, for maximum 8 DMRS ports, at least one of the following needs to be supported:

[0072] 1) FD-OCC length of 2, TD-OCC length of 2, 2 CDM groups are supported, 2 CDM groups are frequency division multiplexed, maximum 4 DMRS ports per group, 2 DMRS ports per symbol for single symbol.

[0073] 2) FD-OCC length of 2, TD-OCC length of 1, maximum 4 CDM groups are supported, maximum 2 DMRS ports per group, 2 or 4 CDM groups are frequency division multiplexed, when 2 CDM groups are frequency division multiplexed in 4 CDM groups, then time division multiplexing should exist in time domain for different CDM groups.

[0074] 3) FD-OCC length of 1, TD-OCC length of 2, maximum 4 CDM groups are supported, maximum 2 DMRS ports per group, 2 or 4 CDM groups are frequency division multiplexed, when 2 CDM groups are frequency division multiplexed in 4 CDM groups, then time division multiplexing should exist in time domain for different CDM groups.

[0075] 4) FD-OCC length of 1, TD-OCC length of 1, maximum 8 CDM groups are supported, or CDM groups are not enabled, 8 DMRS ports are frequency division multiplexed, or frequency division multiplexing and time division multiplexing are combined.

[0076] 5) FD-OCC length of 1, TD-OCC length of 4, maximum 2 CDM groups are supported, maximum 4 DMRS ports per group, 2 CDM groups are time division or frequency division multiplexed.

[0077] Embodiment Two

[0078] In the embodiments of the present application, the orthogonal DMRS port supports maximum 12 orthogonal DMRS ports, then at this time at least one of the FD-OCC length: 1, 2, 3 or 4, the TD-OCC length can be 1, 2, 3, 4. The number of corresponding CDM groups and the FD-OCC and whether there is time division multiplexing or time domain or frequency domain OCC length related. The specific performance is as follows:

[0079] 1) FD-OCC length is 2, TD-OCC length is 2, at this time 3 CDM groups are supported, 2 CDM groups are frequency division multiplexed, each group has maximum 4 DMRS ports, and 2 DMRS ports in a single symbol.

[0080] 2) FD-OCC length is 2, TD-OCC length is 1, at this time maximum 6 CDM groups are supported, each group has maximum 2 DMRS ports, 3 or 6 of the 6 CDM groups are frequency division multiplexed, when 3 of the 6 CDM groups are frequency division multiplexed, then at this time there should be different CDM groups in time domain with time division multiplexing.

[0081] 3) FD-OCC length is 1, TD-OCC length is 2, maximum 6 CDM groups are supported, each group has maximum 2 DMRS ports, 3 or 6 of the 6 CDM groups are frequency division multiplexed, when 3 of the 6 CDM groups are frequency division multiplexed, then at this time there should be different CDM groups in time domain with time division multiplexing.

[0082] 4) FD-OCC length is 1, TD-OCC length is 1, maximum 12 CDM groups are supported, or CDM groups are not enabled, the 12 DMRS ports are frequency division multiplexed, or frequency division multiplexing and time division multiplexing are combined.

[0083] 5) FD-OCC length is 3, TD-OCC length is 1, maximum 4 CDM groups are supported, each group has maximum 3 DMRS ports, 2 or 4 of the 4 CDM groups are frequency division multiplexed, when 2 of the 4 CDM groups are frequency division multiplexed, then at this time there should be different CDM groups in time domain with time division multiplexing.

[0084] 6) FD-OCC length is 1, TD-OCC length is 3, maximum 4 CDM groups are supported, each group has maximum 3 DMRS ports, 2 or 4 of the 4 CDM groups are frequency division multiplexed, when 2 of the 4 CDM groups are frequency division multiplexed, then at this time there should be different CDM groups in time domain with time division multiplexing.

[0085] 7) FD-OCC length is 2, TD-OCC length is 3, maximum 2 CDM groups are supported, each group has maximum 6 DMRS ports, 2 of the 2 CDM groups are frequency division multiplexed or time division multiplexed.

[0086] 8) FD-OCC length is 3, TD-OCC length is 2, maximum 2 CDM groups, each group maximum 6 DMRS ports, 2 frequency division multiplexing or time division multiplexing in 2 CDM groups.

[0087] 9) FD-OCC length is 4, TD-OCC length is 1 or 2 or 3, maximum 2 CDM groups, each group maximum 4, 8 or 12 DMRS ports, if there are 2 CDM groups, then 2 CDM groups are frequency division multiplexing or time division multiplexing.

[0088] 10) FD-OCC length is 3, TD-OCC length is 4, maximum 1 CDM group, each group maximum 12 DMRS ports.

[0089] Embodiment three

[0090] In the embodiment of the application, the orthogonal DMRS port supports a maximum of 16 orthogonal DMRS ports, so at this time at least one of the FD-OCC length: 1, 2, 4 or 8, and the TD-OCC length is 1, 2, 3 or 4 can be supported. The number of corresponding CDM groups and the FD-OCC and whether there is time division multiplexing or time domain or frequency domain OCC length are related. The specific performance is:

[0091] 1) FD-OCC length is 1, TD-OCC length is 1, at this time 16 CDM groups are supported, 16 CDM groups are frequency division multiplexing or time division multiplexing, each group maximum 1 DMRS port.

[0092] 2) FD-OCC length is 2, TD-OCC length is 1, at this time maximum 8 CDM groups are supported, each group maximum 2 DMRS ports, 4 or 8 frequency division multiplexing in 8 CDM groups, when 4 frequency division multiplexing in 8 CDM groups, then at this time there should be different CDM groups in time domain Time division multiplexing exists.

[0093] 3) FD-OCC length is 4, TD-OCC length is 1, maximum 4 CDM groups are supported, each group maximum 4 DMRS ports, 2 or 4 frequency division multiplexing in 4 CDM groups, when 2 frequency division multiplexing in 4 CDM groups, then at this time there should be different CDM groups in time domain Time division multiplexing exists.

[0094] 4) FD-OCC length is 8, TD-OCC length is 1, maximum 2 CDM groups are supported, each group maximum 8 DMRS ports, 1 or 2 frequency division multiplexing in 2 CDM groups, when 1 frequency division multiplexing in 2 CDM groups, then at this time there should be different CDM groups in time domain Time division multiplexing exists.

[0095] 5) FD-OCC length is 2, TD-OCC length is 2, maximum support 4 CDM groups, each group maximum 4 DMRS ports, frequency division multiplexing or time division multiplexing or both in 4 CDM groups.

[0096] 6) FD-OCC length is 4, TD-OCC length is 2, maximum support 2 CDM groups, each group maximum 8 DMRS ports, 1 or 2 frequency division multiplexing in 2 CDM groups, when 1 frequency division multiplexing in 2 CDM groups, then there should be time division multiplexing in time domain in different CDM groups.

[0097] 7) FD-OCC length is 8, TD-OCC length is 2, maximum support 1 CDM group, each group maximum 16 DMRS ports.

[0098] 8) FD-OCC length is 2, TD-OCC length is 4, maximum support 2 CDM groups, each group maximum 8 DMRS ports, frequency division multiplexing or time division multiplexing in 2 CDM groups.

[0099] 9) FD-OCC length is 4, TD-OCC length is 4, maximum support 1 CDM group, each group maximum 16 DMRS ports.

[0100] 10) FD-OCC length is 1, 2 or 4, TD-OCC length is 4, maximum support 4, 2 or 1 CDM groups.

[0101] Embodiment four

[0102] In the embodiment of the application, the orthogonal DMRS port supports maximum 24 orthogonal DMRS ports, then at this time can support at least one of the FD-OCC length: 1, 2, 3, 4 or 8, TD-OCC length is 1 or 2 or 3 or 4. And the number of corresponding CDM groups and FD-OCC and whether there is time division multiplexing or time domain or frequency domain OCC length related. The specific performance is:

[0103] 1) FD-OCC length is 1, TD-OCC length is 1, at this time support 24 CDM groups, 24 CDM groups frequency division multiplexing or time division multiplexing, each group maximum 1 DMRS port.

[0104] 2) FD-OCC length is 2, TD-OCC length is 1, at this time maximum support 12 CDM groups, each group maximum 2 DMRS ports, 4 or 8 or 12 frequency division multiplexing in 12 CDM groups, when 4 or 8 frequency division multiplexing in 12 CDM groups, then at this time there should be time division multiplexing in time domain in different CDM groups.

[0105] 3) FD-OCC length is 4, TD-OCC length is 1, support maximum 6 CDM groups, each group maximum 4 DMRS ports, 2 or 3 or 6 frequency division multiplexing in 6 CDM groups, when 2 or 3 frequency division multiplexing in 6 CDM groups, then there should be different CDM groups in time domain exist time division multiplexing.

[0106] 4) FD-OCC length is 8, TD-OCC length is 1, support maximum 3 CDM groups, each group maximum 8 DMRS ports, 1 or 2 or 3 frequency division multiplexing in 3 CDM groups, when 1 or 2 frequency division multiplexing in 3 CDM groups, then there should be different CDM groups in time domain exist time division multiplexing.

[0107] 5) FD-OCC length is 2, TD-OCC length is 2, support maximum 6 CDM groups, each group maximum 4 DMRS ports, 2 or 3 or 6 frequency division multiplexing in 6 CDM groups, when 2 or 3 frequency division multiplexing in 6 CDM groups, then there should be different CDM groups in time domain exist time division multiplexing.

[0108] 6) FD-OCC length is 4, TD-OCC length is 2, maximum support 3 CDM groups, each group maximum 8 DMRS ports, 1 or 2 or 3 frequency division multiplexing in 3 CDM groups, when 1 or 2 frequency division multiplexing in 3 CDM groups, then there should be different CDM groups in time domain exist time division multiplexing.

[0109] 7) FD-OCC length is 8, TD-OCC length is 2, maximum support 2 CDM groups, each group maximum 16 DMRS ports.

[0110] 8) FD-OCC length is 3, TD-OCC length is 4, maximum support 2 CDM groups, each group maximum 12 DMRS ports, 2 CDM groups frequency division multiplexing or time division multiplexing.

[0111] 9) FD-OCC length is 1 or 2, TD-OCC length is 4, maximum support 6 or 3 CDM groups.

[0112] Embodiment five

[0113] In the embodiment of the application, orthogonal DMRS port supports maximum 32 orthogonal DMRS ports, then at this time can support at least one of FD-OCC length: 1, 2, 4 or 8, TD-OCC length is 1 or 2 or 3 or 4. And the number of corresponding CDM groups and FD-OCC and whether there is time division multiplexing or time domain or frequency domain OCC length related. The specific performance is:

[0114] 1) FD-OCC length 1, TD-OCC length 1, 32 CDM groups supported, 32 CDM groups frequency division multiplexing or time division multiplexing, maximum 1 DMRS port per group.

[0115] 2) FD-OCC length 2, TD-OCC length 1, maximum 16 CDM groups supported, maximum 2 DMRS ports per group, 4 or 8 or 16 CDM groups frequency division multiplexing, when 4 or 8 CDM groups are frequency division multiplexed, then there should be time division multiplexing of different CDM groups in time domain.

[0116] 3) FD-OCC length 4, TD-OCC length 1, maximum 8 CDM groups supported, maximum 4 DMRS ports per group, 2 or 4 or 8 CDM groups frequency division multiplexing, when 2 or 4 CDM groups are frequency division multiplexed, then there should be time division multiplexing of different CDM groups in time domain.

[0117] 4) FD-OCC length 8, TD-OCC length 1, maximum 4 CDM groups supported, maximum 8 DMRS ports per group, 1 or 2 or 4 or 8 CDM groups frequency division multiplexing, when 1 or 2 CDM groups are frequency division multiplexed, then there should be time division multiplexing of different CDM groups in time domain.

[0118] 5) FD-OCC length 2, TD-OCC length 2, maximum 8 CDM groups supported, maximum 4 DMRS ports per group, 2 or 4 or 8 CDM groups frequency division multiplexing, when 2 or 4 CDM groups are frequency division multiplexed, then there should be time division multiplexing of different CDM groups in time domain.

[0119] 6) FD-OCC length 4, TD-OCC length 2, maximum 4 CDM groups supported, maximum 8 DMRS ports per group, 1 or 2 or 4 CDM groups frequency division multiplexing, when 1 or 2 CDM groups are frequency division multiplexed, then there should be time division multiplexing of different CDM groups in time domain.

[0120] 7) FD-OCC length 8, TD-OCC length 2, maximum 2 CDM groups supported, maximum 16 DMRS ports per group, 2 CDM groups frequency division multiplexing, or time division multiplexing.

[0121] 8) FD-OCC length 4, TD-OCC length 4, maximum 2 CDM groups supported, maximum 16 DMRS ports per group, 2 CDM groups frequency division multiplexing, or time division multiplexing.

[0122] 9) FD-OCC length is 1 or 2, TD-OCC length is 4, maximum support 8 or 4 CDM groups, each group maximum 16 DMRS ports, 2 CDM groups are frequency multiplexed, or time multiplexed.

[0123] Embodiment six

[0124] In the embodiment of the present application, orthogonal DMRS ports support maximum 48 orthogonal DMRS ports, then at this time can support at least one of the FD-OCC length: 1, 2, 4, 6 or 8, TD-OCC length is 1 or 2 or 3 or 4. And the number of corresponding CDM groups and FD-OCC and whether there is time division multiplexing or time domain or frequency domain OCC length related. The specific performance is:

[0125] 1) FD-OCC length is 1, TD-OCC length is 1, at this time support 48 CDM groups, 32 CDM groups are frequency multiplexed or time multiplexed, each group maximum 1 DMRS port.

[0126] 2) FD-OCC length is 2, TD-OCC length is 1, at this time maximum support 24 CDM groups, each group maximum 2 DMRS ports, 24 CDM groups in 4 or 8 or 12 or 24 frequency multiplexed, when 16 CDM groups in 4 or 8 or 12 frequency multiplexed, then at this time there should be different CDM groups in time domain time division multiplexing.

[0127] 3) FD-OCC length is 4, TD-OCC length is 1, support maximum 12 CDM groups, each group maximum 4 DMRS ports, 12 CDM groups in 2 or 4 or 6 or 12 frequency multiplexed, when 12 CDM groups in 2 or 4 or 6 frequency multiplexed, then at this time there should be different CDM groups in time domain time division multiplexing.

[0128] 4) FD-OCC length is 8, TD-OCC length is 1, support maximum 6 CDM groups, each group maximum 8 DMRS ports, 6 CDM groups in 1 or 2 or 3 or 6 frequency multiplexed, when 6 CDM groups in 1 or 2 or 3 frequency multiplexed, then at this time there should be different CDM groups in time domain time division multiplexing.

[0129] 5) FD-OCC length is 2, TD-OCC length is 2, support maximum 12 CDM groups, each group maximum 4 DMRS ports, 12 CDM groups in 2 or 4 or 6 or 12 frequency multiplexed, when 12 CDM groups in 2 or 4 or 6 frequency multiplexed, then at this time there should be different CDM groups in time domain time division multiplexing.

[0130] 6) FD-OCC length is 4, TD-OCC length is 2, maximum support 6 CDM groups, each group maximum 8 DMRS ports, 1 or 2 or 3 or 6 frequency division multiplexing in 8 CDM groups, when 1 or 2 or 3 frequency division multiplexing in 6 CDM groups, then there should be different CDM groups in time domain time division multiplexing.

[0131] 7) FD-OCC length is 8, TD-OCC length is 2, maximum support 3 CDM groups, each group maximum 16 DMRS ports, 3 CDM groups frequency division multiplexing, or time division multiplexing.

[0132] 8) FD-OCC length is 4, TD-OCC length is 4, maximum support 3 CDM groups, each group maximum 16 DMRS ports, 3 CDM groups frequency division multiplexing, or time division multiplexing.

[0133] 9) FD-OCC length is 6, TD-OCC length is 1, maximum support 8 CDM groups, each group maximum 6 DMRS ports, 1 or 2 or 4 or 8 frequency division multiplexing in 8 CDM groups, when 1 or 2 or 4 frequency division multiplexing in 8 CDM groups, then there should be different CDM groups in time domain time division multiplexing.

[0134] 10) FD-OCC length is 6, TD-OCC length is 2, maximum support 4 CDM groups, each group maximum 12 DMRS ports, 1 or 2 or 4 frequency division multiplexing in 8 CDM groups, when 1 or 2 multiplexing in 8 CDM groups, then there should be different CDM groups in time domain time division multiplexing.

[0135] In the embodiments of the present application, the maximum number of DMRS ports can be understood as the maximum number of ports for a single UE, or the maximum number of scheduled ports supported in uplink and downlink scheduling, at this time the maximum number of ports is associated with the number of CDM groups and the maximum number of DMRS ports supported in each CDM group (or the length of FD-OCC or TD-OCC). It can be further understood that the maximum number of DMRS ports is the number of orthogonal ports. It can be further understood that the maximum number of ports is the product of the number of CDM groups and the number of DMRS ports in each group. The DMRS ports in a CDM group can be associated with FD-OCC, or TD-OCC, or both FD-OCC and TD-OCC.

[0136] The above embodiments indicate some combinations, including but not limited to only these combinations. For example, TD-OCC length of 1, 2, 3 or 4 can be applied to any FD-OCC length. A certain length of TD-OCC and a certain length of FD-OCC and a certain number of CDM groups constitute the maximum number of DMRS orthogonal ports.

[0137] Embodiment seven

[0138] Through the above embodiments, the implementation support schemes of DMRS port number 8, DMRS port number 12, DMRS port number 16, DMRS port number 24, DMRS port number 32 and DMRS port number 48 are realized.

[0139] In the embodiment of the application, for the FD-OCC length of 8, 8 subcarriers or frequency domain resource units in the frequency domain are allowed to be occupied in each OCC group, and 8 DMRS ports are supported to be multiplexed on the 8 subcarriers or frequency domain resource units by using different FD-OCCs.

[0140] For example, in a CDM group, there are 8 DMRS ports, which are DMRS port 0, 1, 8, 9, 16, 17, 24 and 25 respectively. The 8 DMRS ports correspond to different FD-OCC codes, which are as follows:

[0141] [1, 1, 1, 1, 1, 1, 1, 1], for example, DMRS port 0;

[0142] [1, -1, 1, -1, 1, -1, 1, -1], for example, DMRS port 1;

[0143] [1, 1, -1, -1, 1, 1, -1, -1], for example, DMRS port 8;

[0144] [1, -1, -1, 1, 1, -1, -1, 1], for example, DMRS port 9;

[0145] [1, 1, 1, 1, -1, -1, -1, -1], for example, DMRS port 16;

[0146] [1, -1, 1, -1, -1, 1, -1, 1], for example, DMRS port 17;

[0147] [1, 1, -1, -1, -1, -1, 1, 1], for example, DMRS port 24;

[0148] [1, -1, -1, 1, -1, 1, 1, -1], for example, DMRS port 25.

[0149] In the embodiment of the application, the correspondence between the OCC code and the DMRS port is an example, and does not limit the one-to-one correspondence between the OCC code and the DMRS port. If different DMRS port identifiers in a CDM group use the FD-OCC length of 8, the values of the FD-OCC also conform to the above description.

[0150] In the embodiment of the present application, DMRS needs to occupy certain time-frequency domain resources corresponding to different DMRS numbers or different port values.

[0151] Figure 5 is a principle diagram of one DMRS port occupying 4 subcarriers in one PRB in the embodiment of the present application, as shown in Figure 5 For a DMRS density supporting mapping 4 REs in one PRB to 1 DMRS port. At this time, if the DMRS port does not support FD-OCC or the FD-OCC length is 1, then the single symbol single PRB can support a maximum of 3 DMRS ports, if the FD-OCC length is 2, then the two REs need to be bound to become a CDM group, at this time a maximum of 6 CDM groups are supported, and a single symbol supports a maximum of 12 orthogonal DMRS ports. If the FD-OCC length is 4, then the 4 REs need to be bound to become a CDM group, at this time a maximum of 3 CDM groups are supported, and each CDM group supports a maximum of 4 DMRS ports, and a single symbol supports a maximum of 12 orthogonal DMRS ports. If the FD-OCC length is 8, then the 8 REs of two PRBs need to be bound to become a CDM group, at this time a maximum of 3 CDM groups are supported, and each CDM group supports a maximum of 8 DMRS ports, and a single symbol supports a maximum of 24 orthogonal DMRS ports.

[0152] Figure 6 is a principle diagram of one DMRS port occupying 2 subcarriers in one PRB in the embodiment of the present application, as shown in Figure 6 At this time, one DMRS port or CDM group occupies 2 resource units in one time domain symbol one physical resource block (PRB). At this time, a total of 6 CDM groups are supported on one PRB, that is, a maximum of 12 orthogonal DMRS ports, at this time the 6 CDM groups are frequency division multiplexed in one PRB, that is, occupy different subcarrier positions. Taking a CDM group 0 as an example, it can be mapped on the first and third subcarriers of (a) in Figure 6 , or it can be mapped on the first and 7th subcarriers of (b) in Figure 6 .

[0153] In the embodiment of the present application, if a maximum of 12 ports are supported, TD-OCC does not need to be supported, that is, code division multiplexing is performed in the time domain. If a maximum of 24 DMRS ports are supported, TD-OCC can be enabled, at this time a maximum of 12 orthogonal DMRS ports are supported on one PRB in a single time domain symbol, then in 2 time domain symbols, TD-OCC is used, and the maximum DMRS port number is doubled compared to the single symbol DMRS, that is, a maximum of 24 orthogonal DMRS ports.

[0154] In the embodiment of the present application, if the maximum 48 DMRS ports are supported, the maximum 6 CDM groups can also be supported on PRB1, at this time the maximum 12 CDM groups are supported, and at this time the FD-OCC and TD-OCC lengths are both 2, and the 12 orthogonal CDM groups are distributed on different subcarriers or physical resource blocks.

[0155] In the embodiment of the present application, when the maximum 48 orthogonal DMRS ports are supported, if the TD-OCC length is 2, in the single-symbol DMRS, the maximum 24 orthogonal DMRS ports need to be supported, therefore, if the TD-OCC is not enabled or TD-OCC=[1,1], the maximum 24 orthogonal DMRS ports need to be mapped in the continuous multiple PRBs. At this time, if the FD-OCC length is 1, one DMRS port is mapped on each RE, and the total number of DMRS ports is 24, then two PRBs are needed to map in total. If the FD-OCC length is 2, as shown in Figure 1 , or the REs in the same position of each PRB of the two PRBs are taken as one CDM group. For example, the RE0 position of PRB0 and the RE0 position of PRB1 are taken as one OCC group, and one CDM group is mapped.

[0156] Figure 7 is a principle diagram of one DMRS port occupying 3 subcarriers in one PRB in the embodiment of the present application, as shown in Figure 7 , one DMRS port is mapped on 3 REs of one PRB, and is associated with one OCC code with a length of 3 when the OCC length is 3, or the FD-OCC is not enabled. At this time, 4 CDM groups can be mapped on 1 PRB, and the maximum 12 orthogonal DMRS ports can be supported on one PRB. For the TD-OCC enabled, if the length is 2, the maximum 24 orthogonal DMRS ports can be supported on 1 PRB.

[0157] Figure 8 is a principle diagram of one DMRS port occupying 3 subcarriers in two PRBs in the embodiment of the present application, as shown in Figure 8As shown, similar to the FD-OCC length of 2 above, 2 PRBs can support up to 48 orthogonal DMRS, one DMRS port mapped on 3 REs of two PRBs, i.e. one resource location of one DMRS port mapped on every 8 REs, at this time if the OCC length is 3 then associated with one OCC code of length 3, or if the FD-OCC is not enabled, then the DMRS port occupies one RE alone, not shared with other ports. If the FD-OCC length is 3, at this time on 2 PRBs, up to 8 CDM groups can be mapped, the 8 DMRS, then 2 PRBs can support up to 24 orthogonal DMRS ports. For TD-OCC enabled, if the length is 2, then 2 PRBs support up to 48 orthogonal DMRS ports. For some transmission configurations, too many DMRS ports are supported, for example, only up to 4, 6, 8, 12, 16, 24 or 32, etc., then not all DMRS need to be placed on the PRB, data can be transmitted in the unoccupied area. The RE or RB mapping location of different DMRS ports or CDM groups needs to be associated according to the configured DMRS type or the maximum number of DMRS ports. For example, if the maximum support is 4 ports for a single symbol, one DMRS port or CDM group can be mapped on the first RE of the first PRB of the allocated resource, and the second DMRS port or CDM group can be mapped at a location 1, 2, 3 or 4 REs away from the first DMRS port. Similarly, if the maximum support is 8 ports for a single symbol, one DMRS port or CDM group can be mapped on the first RE of the first PRB of the allocated resource, and the second DMRS port or CDM group can be mapped at a location 1 or 2 REs away from the first DMRS port. If the maximum support is 12 ports for a single symbol, one DMRS port or CDM group can be mapped on the first RE of the first PRB of the allocated resource, and the second DMRS port or CDM group can be mapped at a location 1 RE away from the first DMRS port.

[0158] Figure 9 is a schematic diagram of the principle of one DMRS port occupying one subcarrier in one PRB according to an embodiment of the present application, as shown, Figure 9 If the density of the DMRS can be further reduced, for example, up to 1 RE in one PRB can be mapped to 1 DMRS port. At this time, if the DMRS port does not support FD-OCC, or the FD-OCC length is 1, then up to 12 DMRS ports can be supported on the single symbol, if the FD-OCC length is 2, then PRB1 and PRB0 need to be bound into one CDM group, at this time up to 12 CDM groups are supported, and up to 24 orthogonal DMRS ports are supported on the single symbol.

[0159] Figure 10 is a schematic diagram of time division multiplexed DMRS ports of an embodiment of the present application, as shown in Figure 10 different DMRS ports are multiplexed on different time domain symbols, i.e. TDM, then the mapping of different DMRS ports is as shown in Figure 10 The different time domain symbols mapped by the same DMRS port can be adjacent or adjacent symbols in the mapped DMRS symbols, or can be interleaved mapping between the TDM DMRS ports, i.e. different DMRS ports are interleaved on different time domain symbols.

[0160] In an embodiment of the present application, the DMRS port supports different maximum port numbers or different resource mapping modes, which are associated with different UE capabilities. The UE capability can be different port numbers, different resource mapping modes, or different transmission modes, or different artificial intelligence models, etc. Different UE capabilities are associated with a configuration or pattern of a DMRS. The UE reports the capability, and then the base station configures the corresponding DMRS. The UE obtains the corresponding DMRS configuration and the corresponding resource location.

[0161] In summary, an embodiment of the present application provides a wireless communication method, a UE receives signaling from a transmission node, the signaling indicating a pattern of a DMRS. The UE determines information of a DMRS port for demodulating downlink transmission or transmitting uplink transmission related to the DMRS. In an embodiment of the present application, the DMRS port is associated with at least one FD-OCC length: the FD-OCC length is 1, 2, 3, 4, 6 or 8. The DMRS port is associated with at least one TD-OCC length, and the TD-OCC length is 1, 2, 3 or 4.

[0162] In an embodiment of the present application, when the DMRS configuration or indication is that the maximum number of DMRS ports is 8, 12, 16, 24, 32 or 48, the mapping of a DMRS port in the time domain or frequency domain supports at least one of the following: 1) 4 REs uniformly distributed in a PRB; 2) 3 REs uniformly distributed in a PRB; 3) uniformly distributed or adjacent distribution or interval X subcarriers or frequency domain resource units in a PRB; 4) only 1 RE is mapped in a PRB; 5) 3 REs are mapped in 2 PRBs; 6) 2 or 4 or 6 or 8 REs are mapped in 2 PRBs; 7) TD-OCC multiplexing is used for adjacent DMRS symbols; 8) FDM or TDM multiplexing is used for different DMRS ports or CDM groups in the time domain.

[0163] In the embodiment of the present application, when one CDM group is mapped on multiple PRBs, the number of scheduled PRBs needs to be limited to a certain number, for example, the least common multiple of the number of REs occupied by the CDM group and the number of resource units in one PRB which supports mapping of one CDM group, the least common multiple of the resource units corresponding to the number of PRBs.

[0164] The above description is merely preferred embodiments of the present application but not for limiting the present application. For the person skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the principles of the present application shall be included in the protection scope of the present application.

Claims

1. A method of wireless communication, the method comprising: The application comprises: A user terminal (UE) receives signaling from a transmission node, the signaling being used to indicate demodulation reference signal (DMRS) information; The UE acquires the DMRS information according to the signaling and determines a channel transmission.

2. The method of claim 1, wherein, The channel transmission comprises at least one of: Downlink channel demodulation; Uplink channel transmission.

3. The method of claim 1, wherein, The DMRS information comprises at least one of: A DMRS port, a DMRS sequence, a multiplexing manner between DMRS ports, a DMRS port pattern, and a number of DMRS code division multiplexing groups.

4. The method of claim 3, wherein, The multiplexing manner between DMRS ports comprises at least one of: Code division multiplexing; time division multiplexing; and frequency division multiplexing, wherein the code division multiplexing comprises frequency domain code division multiplexing of different frequency domain orthogonal cover codes (FD-OCCs) associated with the DMRS ports or time domain code division multiplexing of different time domain orthogonal cover codes (TD-OCCs) associated with the DMRS ports.

5. The method of claim 4, wherein, The length of the FD-OCCs associated with the DMRS ports comprises at least one of: An FD-OCC with a length of 1; an FD-OCC with a length of 2; an FD-OCC with a length of 3; an FD-OCC with a length of 4; an FD-OCC with a length of 6; and an FD-OCC with a length of 8.

6. The method of claim 4, wherein, The length of the TD-OCCs associated with the DMRS ports comprises at least one of: A TD-OCC with a length of 1; a TD-OCC with a length of 2; a TD-OCC with a length of 3; and a TD-OCC with a length of 4.

7. The method of claim 4, wherein, The number of the DMRS ports comprises at least one of: 8 DMRS ports; 12 DMRS ports; 16 DMRS ports; 24 DMRS ports; 32 DMRS ports; and 48 DMRS ports.

8. The method of claim 5, wherein, In the case where the length of the FD-OCCs is 1, the length of the TD-OCCs is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N1 comprises one of 1, 2, 4, 8, 12, 16, 24, 32, 48, and 64; or the length of the TD-OCCs is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N2 comprises one of 1, 2, 4, 6, 8, 12, 16, 24, and 32; or the length of the TD-OCCs is 3, the number of CDM groups is N3, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N3 comprises one of 1, 2, 4, 6, 8, and 12; or the length of the TD-OCCs is 4, the number of CDM groups is N4, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, wherein the value of N4 comprises one of 1, 2, 3, 4, 6, 8, and 12.

9. The method of claim 5, wherein, In the case where the length of the FD-OCCs is 2, The length of the TD-OCC is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N1 has one of the following values: 1, 2, 4, 6, 8, 12, 16, 24, and 32. Alternatively, the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N2 has one of the following values: 1, 2, 3, 4, 6, 8, 12, and 16. Alternatively, the length of the TD-OCC is 3, the number of CDM groups is N3, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N3 has one of the following values: 1, 2, 4, 6, and 8. Alternatively, the length of the TD-OCC is 4, the number of CDM groups is N4, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N4 has one of the following values: 1, 2, 3, and 4.

10. The method of claim 5, wherein, In the case where the length of the FD-OCC is 3, the length of the TD-OCC is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N1 has one of the following values: 1, 2, 4, 8, 12, and 16. Alternatively, the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N2 has one of the following values: 1, 2, 4, 6, and 8. Alternatively, the length of the TD-OCC is 3, the number of CDM groups is N3, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N3 has one of the following values: 1, 2, and 4. Alternatively, the length of the TD-OCC is 4, the number of CDM groups is N4, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N4 has one of the following values: 1, 2, 3, and 4.

11. The method of claim 5, wherein, In the case where the length of the FD-OCC is 4, The length of the TD-OCC is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N1 has one of the following values: 1, 2, 3, 4, 6, 8, 12, and 16. Alternatively, the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N2 has one of the following values: 1, 2, 3, 4, 6, and 8. Alternatively, the length of the TD-OCC is 3, the number of CDM groups is N3, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N3 has one of the following values: 1, 2, 3, and 4. Alternatively, the length of the TD-OCC is 4, the number of CDM groups is N4, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N4 takes one of the following values: 1, 2, 3, and 4.

12. The method of claim 5, wherein, In the case where the length of the FD-OCC is 6, the length of the TD-OCC is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N1 takes one of the following values: 1, 2, 4, 6, and 8; Alternatively, the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N2 takes one of the following values: 1, 2, 3, and 4.

13. The method of claim 5, wherein, In the case where the length of the FD-OCC is 8, the length of the TD-OCC is 1, the number of CDM groups is N1, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N1 takes one of the following values: 1, 2, 3, 4, 6, and 8; Alternatively, the length of the TD-OCC is 2, the number of CDM groups is N2, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N2 takes one of the following values: 1, 2, 3, and 4; Alternatively, the length of the TD-OCC is 3, the number of CDM groups is N3, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N3 takes one of the following values: 1, 2, and 3; Alternatively, the length of the TD-OCC is 4, the number of CDM groups is N4, and the resource multiplexing manner between the CDM groups is frequency division multiplexing or a combination of frequency division multiplexing and time division multiplexing, where N4 takes one of the following values: 1 and 2.

14. The method of any one of claims 8-13, wherein, The multiplexing manner between the CDM groups includes at least one of the following: N1, N2, N3, or N4 CDM groups are frequency division multiplexed; N11 CDM groups in N1 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N11 CDM groups; N21 CDM groups in N2 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N21 CDM groups; N31 CDM groups in N3 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N31 CDM groups; N41 CDM groups in N4 are frequency division multiplexed, and other CDM groups are time division multiplexed with the N41 CDM groups; where N11 is an integer less than N1, N21 is an integer less than N2, N31 is an integer less than N3, and N41 is an integer less than N4.

15. The method of claim 3, wherein, The at least one DMRS port indicated by the signaling is mapped on at least one of the following frequency domain resources REs: 4 REs evenly distributed in each 1 physical resource block (PRB); 3 REs evenly distributed in each 1 PRB; a preset number of subcarriers or REs evenly distributed, adjacently distributed, or interval distributed in each 1 PRB; only 1 RE in each 1 PRB; each 2 PRBs are mapped on 3 REs; each 2 PRBs are mapped on 1 or 2 or 4 or 6 or 8 REs, wherein the 1 or 2 or 4 or 6 or 8 REs are adjacent REs or REs with a certain interval.

16. The method of claim 15, wherein, in a case that one CDM group is mapped on multiple PRBs, the number of the PRBs is the least common multiple of a first RE number and a second RE number, wherein the first RE number is the number of REs that one CDM group is mapped on, and the second RE number is the number of REs that one PRB supports to map one CDM group.

17. The method of claim 3, wherein, the multiplexing manner among the DMRS ports indicated by the signaling includes at least one of the following: TD-OCC multiplexing is used for the DMRS ports of adjacent OFDM time domain symbols; different DMRS ports or CDM groups use frequency division multiplexing or time division multiplexing; when different DMRS ports or CDM groups use time division multiplexing, the DMRS ports or CDM groups are mapped on adjacent OFDM symbols or are mapped on OFDM symbols with a certain interval; when different DMRS ports or CDM groups use time division multiplexing, the different DMRS ports or CDM groups use cyclic mapping or sequential mapping.

18. The method of claim 1, wherein, the DMRS information is indicated based on UE capability, wherein the UE capability includes at least one of the following: a maximum number of DMRS ports; a DMRS type; supporting a model based on artificial intelligence or deep learning; a maximum or minimum number of mapping resources of DMRS.

19. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, the processor implements the method in any one of claims 1-18 when executing the computer program.

20. A computer program product comprising a computer program, characterized in that, the computer program implements the method in any one of claims 1-18 when executed by the processor.

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