Wireless communication method, terminal device, and network device

Abstract

The present application provides a wireless communication method, a terminal device, and a network device. The method comprises: a terminal device receives first configuration information, wherein the first configuration information is used for configuring a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal. The overlapping transmission of the DMRS and the first signal can enable a transmission resource to simultaneously transmit the DMRS and the first signal, thereby improving the utilization rate of the transmission resource for the DMRS and / or the first signal. For example, when the total transmission resources are fixed, even if the number of REs occupied by the DMRS increases, the first signal can still be placed on the REs; therefore, the number of REs occupied by the first signal does not decrease. By means of the first configuration information, the network device can accurately configure the first DMRS resource, and the terminal device can determine the configuration of the first DMRS resource, thereby achieving the overlapping transmission of the DMRS and the first signal between the network device and the terminal device.

Description

Wireless communication method, terminal device, and network device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, terminal equipment, and network equipment. Background Art

[0002] In a communication system, communication processes such as channel estimation can be achieved by measuring demodulation reference symbols (DMRS). In some cases, DMRS may need to occupy more transmission resources. For example, when the terminal device is moving at a high speed, DMRS is required to occupy more symbols in the time domain. In related technologies, when the total transmission resources are certain, the increase in resource overhead required for DMRS means that the resources available for other signal transmissions will be reduced, which will cause many problems. For example, when the resources required for DMRS increase, the resources for transmitting data will be reduced, resulting in relatively low resource utilization for data transmission.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, a terminal device, and a network device. The following introduces various aspects of the present application.

[0005] In a first aspect, a wireless communication method is provided, the method comprising: a terminal device receiving first configuration information; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0006] In a second aspect, a wireless communication method is provided, which includes: a network device sends first configuration information to a terminal device; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0007] According to a third aspect, a terminal device is provided, comprising: a receiving unit for receiving first configuration information; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0008] In a fourth aspect, a network device is provided, comprising: a sending unit, configured to send first configuration information to a terminal device; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0009] In a fifth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a network device is provided, comprising a processor, a memory, and a transceiver, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the network device executes part or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or network device. In another possible design, the system may also include other devices that interact with the terminal device or network device in the solution provided in the embodiment of the present application.

[0012] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a terminal device and / or a network device to execute part or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a terminal device and / or a network device to perform some or all of the steps of the methods described in each of the above aspects. In some implementations, the computer program product may be a software installation package.

[0014] In the tenth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0015] The overlapping transmission of DMRS and the first signal can enable the transmission resources to transmit DMRS and the first signal at the same time, thereby improving the utilization rate of the DMRS and / or first signal transmission resources. For example, when the total transmission resources are constant, even if the resource elements (REs) occupied by DMRS increase, the first signal can still be placed on the REs, so the REs occupied by the first signal will not decrease. Through the first configuration information, the network device can accurately configure the first DMRS resources, and the terminal device can determine the configuration of the first DMRS resources, thereby realizing the overlapping transmission of DMRS and the first signal between the network device and the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic diagram of a wireless communication system used in an embodiment of the present application.

[0017] FIG. 2A is an exemplary diagram of resources occupied by a Type 1 DMRS.

[0018] FIG. 2B is an exemplary diagram of resources occupied by a Type 2 DMRS.

[0019] FIG3 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.

[0020] FIG4A is an example diagram of resources of a first type DMRS port provided in an embodiment of the present application.

[0021] FIG4B is an example diagram of resources of another first type DMRS port provided in an embodiment of the present application.

[0022] FIG4C is an example diagram of resources of another first type DMRS port provided in an embodiment of the present application.

[0023] FIG4D is an example diagram of resources of another first type DMRS port provided in an embodiment of the present application.

[0024] FIG5A is an example diagram of resources of a third type DMRS port provided in an embodiment of the present application.

[0025] FIG5B is an example diagram of resources of another third type DMRS port provided in an embodiment of the present application.

[0026] FIG6 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

[0027] FIG7 is a schematic structural diagram of a network device provided in an embodiment of the present application.

[0028] FIG8 is a schematic structural diagram of a device for communication provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solution in this application will be described below with reference to the accompanying drawings.

[0030] Communication System

[0031] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include communication devices. The communication devices may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120.

[0032] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0033] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0034] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0035] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D). For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0036] The network device in the embodiments of the present application may be a device for communicating with a terminal device. The network device may also include an access network device. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within the coverage area. The access network device may also be referred to as a radio access network device or a base station. The access network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects the terminal device to a wireless network. Access network equipment can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the access network device.

[0037] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0038] The communication equipment involved in a wireless communication system can include not only access network equipment and terminal equipment, but also core network elements. Core network elements can be implemented by devices, that is, core network elements are core network devices. It is understood that core network devices can also be a type of network equipment.

[0039] The core network elements in the embodiments of the present application may include network elements that process and forward user signaling and data. For example, the core network equipment may include core network access and mobility management function (AMF), session management function (SMF), user plane gateway, location management function (LMF) and other core network equipment. Among them, the user plane gateway may be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) or a user plane network element function entity (UPF). Of course, the core network may also include other network elements, which are not listed here one by one.

[0040] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device includes a CU and a DU. The gNB may also include an AAU.

[0041] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0042] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0043] DMRS

[0044] To facilitate the understanding of DMRS, we first introduce the basic working processes of wireless communication systems (such as Wi-Fi, 4G, 5G, and future 6G communication systems) for the transmitter and receiver, respectively.

[0045] At the transmitting end, the bit stream information to be transmitted undergoes channel coding (corresponding rate matching may also be required) to obtain coded bits, which are then modulated to obtain modulation symbols. The modulation may, for example, adopt one or more of the following modulation methods: BPSK, QPSK, 16QAM, 64QAM, 256QAM, 512QAM, 1024QAM, 2048QAM, 4096QAM. Next, the modulation symbols and DMRS will be inserted into the corresponding time-frequency resources (for example, into the corresponding resource elements (RE)). After subsequent processing, orthogonal frequency division multiplexing (OFDM) symbols, or single carrier-frequency division multiple access (SC-FDMA) symbols, or other forms of multi-carrier symbols can be obtained.

[0046] At the receiving end, the receiver can measure the DMRS to perform channel estimation, demodulate the modulation symbols, and then perform channel decoding to obtain the transmitted bits. It should be noted that these steps can be combined and iterated (for example, the information obtained by the decoding module can be used in the module including channel estimation and / or in the module including modulation symbol demodulation), and do not necessarily follow the strict order described above.

[0047] It should be noted that the present application does not limit the types of the transmitting end and the receiving end, that is, it does not limit the transmission process applicable to the embodiments of the present application. For example, the transmission process applicable to the embodiments of the present application may be for downlink transmission (DL transmission) from a network device to a terminal device. For another example, the transmission process applicable to the embodiments of the present application may be for uplink transmission (UL transmission) from a terminal device to a network device. The transmission process applicable to the embodiments of the present application may be for sidelink transmission (SL transmission) from a terminal device to a terminal device.

[0048] It should be noted that the transmission in the present application can be either the transmission of data or the transmission of control information. For example, the transmission objects include one or more of the following: physical downlink shared channel (PDSCH), physical uplink shared channel (PUSCH), physical sidelink shared channel (PSSCH), physical downlink control channel (PDCCH), physical uplink control channel (PUCCH), physical sidelink control channel (PSCCH), physical sidelink feedback channel (PSFCH), etc. In the present application, for the sake of simplicity, data or the first signal is usually used to describe the corresponding technical solution. It can be understood that the data in the present application not only includes general data to be transmitted (such as data transmitted in PDSCH), but also control information.

[0049] It can be seen from the above transmission process that in order to obtain the bit information transmitted by the sending end, the receiving end needs to use DMRS.

[0050] Due to the complexity and time-varying nature of the wireless channel environment, in the above-mentioned system, the estimation and recovery of the wireless channel by the receiver directly affects the final data recovery performance. In the communication system involved in the related art, the DMRS of the control channel (i.e., the channel for transmitting control information) can be relatively fixed, that is, its density and / or pattern does not need to change dynamically. It can be understood that in this case, the design of DMRS is conservative, that is, it can adapt to various environments of the wireless channel. For the data channel (i.e., the channel for transmitting data), in order to reduce the DMRS overhead, different DMRS densities and / or patterns can be designed. The system can configure or instruct the receiving end which DMRS to use based on the current wireless channel environment.

[0051] For ease of understanding, the DMRS for data is described below using the NR system as an example. It is understandable that the embodiments of the present application can also be applied to other communication systems.

[0052] In the NR system, DMRS can be divided into front-loaded DMRS and post-DMRS (also called additional reference signal (additional RS)).

[0053] The preamble DMRS is usually located in the first few OFDM symbols of a time slot. The preamble DMRS can contain one or two OFDM symbols and is configured by the network equipment.

[0054] The post-DMRS is a repetition of the pre-DMRS. It can be used to ensure high-speed performance or improve channel estimation. For example, it can be applied to high-speed terminal devices. The post-DMRS can add some RSs to the pre-DMRS. For example, an additional reference signal DMRS can be sent at a certain location in the back of the allocated time domain resources.

[0055] The NR system supports two different DMRS types: Type 1 and Type 2. Each type occupies resources differently. The following uses Figures 2A and 2B as examples to illustrate the resources occupied by Type 1 and Type 2 DMRS, respectively.

[0056] In Figures 2A and 2B , a small grid represents one RE. In the examples of Figures 2A and 2B , 12 subcarriers in the frequency domain constitute one resource block (RB). In the time domain, Figures 2A and 2B use seven symbols as an example.

[0057] As shown in Figure 2A, for configuration type 1 DMRS, two code division multiplexing (CDM) groups can be supported on one OFDM symbol in each RB (Figure 2A uses different filling patterns to represent different CDM groups), and each CDM group contains 6 subcarriers. Each CDM group can support 2 ports, and the two ports are orthogonal through an orthogonal covering code (OCC), that is, the OCC code used by one port on different carriers is [+1 +1 +1 +1 +1 +1], and the OCC code used by the other port is [+1 -1 +1 -1 +1 -1]. In this way, type 1 DMRS can support up to 4 orthogonal ports on one OFDM symbol and up to 8 orthogonal ports on two OFDM symbols (TD-OCC can be used between two OFDM symbols). Specifically, the first CDM group of the first DMRS symbol includes ports {1000, 1001}, and the second CDM group includes ports {1002, 1003}; the first CDM group of the second DMRS symbol includes ports {1004, 1005}, and the second CDM group includes ports {1006, 1007}.

[0058] As shown in Figure 2B, for configuration type 2 DMRS, three CDM groups can be supported on one OFDM symbol in each RB (Figure 2B uses different filling patterns to represent different CDM groups), and each CDM group contains four adjacent subcarriers. Each CDM group can support two ports, and the two ports are orthogonalized by OCC, that is, the OCC code used by one port on a different carrier is [+1 +1 +1 +1], and the OCC code used by the other port is [+1 -1 +1 -1]. In this way, type 2 DMRS can support up to 6 orthogonal ports on one OFDM symbol and up to 12 orthogonal ports on two OFDM symbols (TD-OCC is used between the two OFDM symbols). Specifically, the first CDM group of the first DMRS symbol includes ports {1000, 1001}, the second CDM group includes ports {1002, 1003}, and the third CDM group includes ports {1004, 1005}; the first CDM group of the second DMRS symbol includes ports {1006, 1007}, the second CDM group includes ports {1008, 1009}, and the third CDM group includes ports {1010, 1011}.

[0059] It should be noted that the RE mentioned in the embodiments of the present application may be the smallest time-frequency resource unit in the communication system. For example, in some communication systems (such as NR or LTE systems), one RE may correspond to one subcarrier in the frequency domain and one RE may correspond to one symbol in the time domain.

[0060] It should be noted that the RBs mentioned in the embodiments of the present application may refer to K consecutive subcarriers in the frequency domain. Alternatively, in some communication systems, the RBs may refer to K consecutive subcarriers in the frequency domain and M consecutive symbols in the time domain. K may be a positive integer. The value of K may be, for example, 12, or other values, such as 2 to the power of n, i.e., K may be 8, 16, or other values. M may be a positive integer. The value of M may be, for example, one or more of 6, 7, 13, or 14.

[0061] It should be noted that, in the description of this application, RB and physical resource block (PRB) are not distinguished and are both referred to as RB.

[0062] It should be noted that the symbols mentioned in the embodiments of the present application may include one or more of the following: OFDM symbols, SC-FDMA symbols, and other forms of multi-carrier symbols. Among them, SC-FDMA symbols may also be called discrete Fourier transform spread OFDM (DFT-s-OFDM) symbols, multi-carrier symbols using a transform precoder, or OFDM symbols using a transform precoder.

[0063] As can be seen from this, in related technologies, DMRS and other signals (such as data) need to occupy different REs. That is, in the same RE position, DMRS or other signals can be placed, but DMRS and other signals cannot be placed at the same time. In other words, DMRS and other signals are placed orthogonally in the time domain, frequency domain, and code domain. Therefore, other signals and DMRS are orthogonal in time-frequency resources. This type of DMRS can be simply referred to as orthogonal DMRS. This method of transmitting DMRS can be called orthogonal transmission of DMRS.

[0064] In some cases, DMRS may require more transmission resources. For example, if the terminal device is moving at a high speed, DMRS will need to occupy more symbols in the time domain. In related technologies, given a fixed total transmission resource, the increased resource overhead required for DMRS means that the resources available for other signal transmissions will be reduced, which can lead to various problems. For example, when the resources required for DMRS increase, the resources for data transmission will be reduced, resulting in relatively low resource utilization for data transmission.

[0065] FIG3 is a schematic flow chart of a wireless communication method provided by an embodiment of the present application to solve the above problem. The method shown in FIG3 can be executed by a terminal device and a network device. The method shown in FIG3 can include step S310.

[0066] Step S310: The terminal device receives first configuration information sent by the network device.

[0067] The first configuration information may be used to configure a first DMRS resource. The first DMRS resource may be used for overlapping transmission of a DMRS and a first signal. The first configuration information may also be referred to as first DMRS resource configuration information.

[0068] The first signal may include one or more of the following: data, control information. For example, the first signal may include one or more of the following: PDSCH, PUSCH, PSSCH, PDCCH, PUCCH, PSCCH, PSFCH, etc.

[0069] Overlapping transmission of the DMRS and the first signal may include: transmitting the DMRS and the first signal in a non-orthogonal manner. For example, non-orthogonal transmission may include: simultaneously transmitting the DMRS and the first signal on the same time domain resource and / or frequency domain resource. Exemplarily, the DMRS and the first signal may be placed on the same RE. This same RE may be referred to as a first RE, and the first RE may belong to a first DMRS resource.

[0070] It should be noted that, since the DMRS and the first signal can be transmitted non-orthogonally on the first DMRS resource, the first DMRS resource can also be called a non-orthogonal DMRS resource.

[0071] It should be noted that the "transmission" mentioned in this application may include sending and / or receiving. In other words, overlapping transmission may include overlapping sending and / or overlapping receiving.

[0072] Overlapping transmission of the DMRS and the first signal allows transmission resources to simultaneously transmit the DMRS and the first signal, thereby improving the utilization of the DMRS and / or first signal transmission resources. For example, if the total transmission resources are fixed, even if the number of REs occupied by the DMRS increases, the first signal can still be placed on the RE, and therefore, the number of REs occupied by the first signal will not decrease.

[0073] For the overlappingly transmitted DMRS and the first signal, the receiver can use technologies such as AI to obtain the DMRS signal and / or the first signal, achieve effective channel estimation, and / or achieve correct reception of the first signal.

[0074] The first configuration information may be used to configure the first DMRS resource. For example, the first configuration information may be used to configure how to map multi-port DMRS resources.

[0075] Through the first configuration information, the network device can accurately configure the first DMRS resource, and the terminal device can determine the configuration of the first DMRS resource, thereby achieving overlapping transmission of the DMRS and the first signal between the network device and the terminal device.

[0076] In some embodiments, the first DMRS resource may correspond to one or more first-type DMRS ports. The first configuration information may be used to configure resources for the first-type DMRS ports. The first-type DMRS ports may correspond to non-orthogonal DMRS resources (i.e., first DMRS resources). Therefore, the first-type DMRS ports may also be referred to as non-orthogonal DMRS ports.

[0077] The first type DMRS port may belong to a first port set. The first port set may include, for example, DMRS ports n1 to n2. The first type DMRS port may be one or more of ports n1 to n2. Wherein, n1 and n2 may be numbers greater than or equal to 0.

[0078] In some embodiments, the second DMRS resource may be used for DMRS transmission and not for transmission of the first signal. In other words, the DMRS signal transmitted by the second DMRS resource does not overlap with the first signal. Optionally, the second DMRS resource may also be referred to as an orthogonal DMRS transmission resource.

[0079] Optionally, the second DMRS resource may correspond to one or more second-type DMRS ports. The second-type DMRS port may correspond to an orthogonal DMRS resource, and therefore, the second-type DMRS port may also be referred to as an orthogonal DMRS port.

[0080] The second type DMRS port may belong to a second port set. The second port set may include, for example, DMRS ports 0 to n1-1. The second type DMRS port may be one or more of ports 0 to n1-1. Where n1 may be a number greater than 1.

[0081] In some embodiments, the first DMRS resource and the second DMRS resource may correspond to one or more third DMRS type ports. In other words, the third type DMRS port may correspond to orthogonal DMRS resources and non-orthogonal DMRS resources.

[0082] Optionally, the third type of DMRS port may include a first type of DMRS port and a second type of DMRS port. The first DMRS resource and the second DMRS resource may be associated, or the first type of DMRS port and the second type of DMRS port may be associated. Thus, it can be seen that the third type of DMRS port may include an orthogonal DMRS port and a non-orthogonal DMRS port, and the third type of DMRS port may be referred to as a hybrid DMRS port.

[0083] It should be noted that the association between the first DMRS resource and the second DMRS resource may mean that the first DMRS resource and the second DMRS resource are associated with the same data transmission layer.

[0084] The third type DMRS port may correspond to a third DMRS resource. The third DMRS resource is a superposition of the first DMRS resource and the second DMRS resource. Based on the third resource, overlapping and non-overlapping mixed transmission of DMRS and the first signal may be achieved. For example, the first port set includes DMRS ports n1 to n2, and the second port set includes DMRS ports 0 to n1-1. For ports 0 and 1 in the second port set, and ports n1 and n1+1 in the first port set, the third type DMRS port may include one port resource corresponding to port 0 and port n1, and one port resource corresponding to port 1 and port n1+1.

[0085] As a possible implementation, the first configuration information may be used to configure resources for a first-type DMRS port. That is, the first configuration information may be used to configure resources for a non-orthogonal DMRS port. For example, the first configuration information may be used directly to configure resources for the first-type DMRS port. Alternatively, the first configuration information may be used to configure resources for a first-type DMRS port among the third-type DMRS ports.

[0086] The following describes how the first configuration information configures resources of the first type DMRS port, taking the case where both the first DMRS port and the second DMRS port are first type DMRS ports as an example.

[0087] In some embodiments, the resources of the first type DMRS port may include: the first DMRS port and the second DMRS port occupy the same time domain resources, and different frequency domain resources. In other words, the first configuration information may configure: different first type DMRS ports occupy the same time domain resources, and different first type DMRS ports occupy different frequency domain resources. In other words, the frequency domain resources occupied by different first type DMRS ports are non-overlapping resource units (e.g., REs).

[0088] Figure 4A is an example diagram of resources for a first type DMRS port provided in an embodiment of the present application. Figure 4A shows the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port, respectively. In Figure 4A, each small square can represent an RE. As shown in Figure 4A, the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port occupy different frequency domain resources, but the same time domain resources.

[0089] In some embodiments, the resources of the first type DMRS port may include: the first DMRS port and the second DMRS port occupy different time domain resources, and the same frequency domain resources. In other words, the first configuration information may configure: different first type DMRS ports occupy different time domain resources, and different first type DMRS ports occupy the same frequency domain resources. In other words, the time domain resources occupied by different first type DMRS ports are non-overlapping resource units (e.g., REs).

[0090] Figure 4B is an example diagram of resources for another first-type DMRS port provided in an embodiment of the present application. Figure 4B shows the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port, respectively. In Figure 4B, each small square can represent an RE. As shown in Figure 4B, the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port occupy different time domain resources, but the occupied frequency domain resources are the same.

[0091] In some embodiments, the resources of the first type DMRS port may include: the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same. In other words, the first configuration information may configure: different first type DMRS ports occupy the same time domain resources, and different first type DMRS ports occupy the same frequency domain resources.

[0092] Figure 4C is an example diagram of resources for another first-type DMRS port provided by an embodiment of the present application. Figure 4C shows the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port, respectively. In Figure 4C, each small square can represent an RE. As shown in Figure 4C, the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port occupy the same time domain resources and frequency domain resources.

[0093] It should be noted that, when the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port may be orthogonal in the code domain. For example, the resources of the first DMRS port and the resources of the second DMRS port may be orthogonalized using different OCC codes. Alternatively, the first DMRS port and the second DMRS port may belong to different CDM groups.

[0094] In some embodiments, the location and / or size of the time domain resources occupied by the first type DMRS port may satisfy one or more of the following: fixed, predefined, or configured by a network device. For example, the number of time domain symbols occupied by the first type DMRS port may satisfy one or more of the following: fixed, predefined, or configured by a network device.

[0095] In some embodiments, the location and / or size of the frequency domain resources occupied by the first type DMRS may satisfy one or more of the following: fixed, predefined, or configured by a network device. For example, the number of subcarriers occupied by a first type DMRS port may satisfy one or more of the following: fixed, predefined, or configured by a network device.

[0096] In some embodiments, the time domain symbols occupied by the first type of DMRS port may be continuous. As shown in FIG4A to FIG4C , the time domain symbols occupied by the first DMRS port and the second DMRS port are both continuous.

[0097] In some embodiments, the time domain symbols occupied by the first type of DMRS ports may be discontinuous, wherein the discontinuity may be arranged at intervals.

[0098] Figure 4D is an example diagram of resources of another first type DMRS port provided in an embodiment of the present application. Figure 4D shows the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port, respectively. In Figure 4D, each small square can represent an RE. As shown in Figure 4D, the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port occupy different time domain resources, but the occupied frequency domain resources are the same, and the symbols of the resources corresponding to the first DMRS port and the resources corresponding to the second DMRS port are discontinuous.

[0099] In some embodiments, whether the time domain symbols occupied by the first type of DMRS ports are continuous may satisfy one or more of the following: predefined, configured by the network device.

[0100] In some embodiments, the terminal device may receive second configuration information. The second configuration information may be used to configure a second DMRS resource. The second information may also be referred to as second DMRS resource configuration information.

[0101] The second configuration information can be used, for example, to configure resources for a second type DMRS port. As described above, the second DMRS resources can be orthogonal DMRS resources. Configuration and instructions related to the second type DMRS port can refer to the definition of orthogonal DMRS resources in related technologies. For example, the second DMRS resources can be DMRS type 1 and DMRS type 2 as described above.

[0102] As described above, the third type DMRS port may include a first type DMRS port and a second type DMRS port. The configuration of the DMRS resources corresponding to the third type DMRS port may be implemented based on the configuration of the DMRS resources corresponding to the first type DMRS port and the configuration of the DMRS resources corresponding to the second type DMRS port described above.

[0103] In some embodiments, resources occupied by second-type DMRS ports included in different third-type DMRS ports may be orthogonal to each other. For example, orthogonality may be achieved through one or more of time division, frequency division, and code division.

[0104] Figure 5A is a schematic diagram of resources corresponding to a third type DMRS port provided in an embodiment of the present application. Figure 5A shows a schematic diagram of resources corresponding to different third type DMRS ports. As shown in Figure 5A, the first type DMRS ports included in different third type DMRS ports occupy the same time domain resources and occupy different frequency domain resources. The resources occupied by the second type DMRS ports included in different third type DMRS ports are code-divided. For example, the resources occupied by the second type DMRS ports included in different third type DMRS ports may belong to the same CDM group and use different OCC codes to maintain orthogonality.

[0105] Figure 5B is a schematic diagram of resources corresponding to another third type DMRS port provided in an embodiment of the present application. Figure 5B shows a schematic diagram of resources corresponding to different third type DMRS ports. As shown in Figure 5B, the first type DMRS ports included in different third type DMRS ports occupy the same frequency domain resources and different time domain resources. The second type DMRS ports included in different third type DMRS ports occupy different frequency domain resources, that is, the resources occupied by the second type DMRS ports included in different third type DMRS ports are code-divided.

[0106] It should be noted that Figures 5A and 5B are only examples. The resources corresponding to the third type DMRS port may include resources corresponding to the first type DMRS port and resources corresponding to the second type DMRS port in other combinations.

[0107] In some embodiments, the terminal device may receive first information sent by the network device. The first information may be used to indicate information about the first DMRS resource.

[0108] The information of the first DMRS may include information related to the first DMRS resource indicated by the network device. For example, the information of the first DMRS resource may include the first DMRS resource and / or a port corresponding to the first DMRS resource.

[0109] Exemplarily, the information of the first DMRS may be indicated by the value of the first field. The first field may be a newly added field. Table 1 shows the correspondence between the indication value of the first field and the port (non-orthogonal DMRS port) corresponding to the first DMRS resource.

[0110] Table 1

[0111] In Table 1, the first port set may include n1 to n1+3. As shown in Table 1, when the indication value of the first field is 0, the port corresponding to the first DMRS resource may be port n1. When the indication value of the first field is 6, the ports corresponding to the first DMRS resource may be ports n1, n1+1, and n1+2.

[0112] It should be noted that Table 1 is merely an example. For example, some of the content in Table 1 may be implemented independently. In another example, Table 1 may be supplemented with other content. In another example, the correspondence between the first field in Table 1 and the port corresponding to the first DMRS resource may be changed. For example, the indication value of 1 in the first field may also indicate that the first type DMRS port may be port n1 or n1+1.

[0113] In some embodiments, the terminal device may receive second information. The second information may be used to indicate information about the second DMRS resource. The information about the second DMRS resource may include the second DMRS resource and / or a port corresponding to the second DMRS resource.

[0114] The second information may be indicated by a second field. For example, the second field may include an indication field indicating orthogonal DMRS ports in the related art. Exemplarily, the second field may include a DMRS port indication field in downlink control information (DCI) specified in the related art. The DMRS port indication field may be, for example, an antenna port field.

[0115] In some embodiments, the first field may be different from the second field. That is, the first information and the second information may be indicated by different fields. For example, the first field may be a newly added field, and the second field may be an indication field indicating orthogonal DMRS ports in the related art.

[0116] In some embodiments, the first information and the second information may be indicated by a third field. That is, the first information and the second information may be indicated by the same field. In other words, the third field may indicate both the first information and the second information. The third field may be, for example, a newly added field.

[0117] Optionally, when the first information and the second information are indicated by the third field, the first information and the second information may be associated, or the first DMRS resource and the second DMRS resource may be associated. The first information and the second information being associated may mean that the first DMRS resource and the second DMRS resource are associated with the same data transmission layer, or that the first information and the second information indicate DMRS resources corresponding to the same data transmission layer. Similarly, the first DMRS resource and the second DMRS resource being associated may mean that the first DMRS resource and the second DMRS resource are associated with the same data transmission layer, or that the first information and the second information indicate DMRS resources corresponding to the same data transmission layer.

[0118] It should be noted that an offset may be set for the initial sequence of the first DMRS resource to reduce interference between the DMRS and the first signal.

[0119] In some embodiments, all resources used to transmit DMRS can overlap and transmit the first signal. That is, the terminal device and network equipment can use only the first DMRS resource to transmit DMRS. For example, all data transmission layers are associated only with the first DMRS resource. In other words, all data layers use non-orthogonal DMRS resources to transmit DMRS, and do not use orthogonal DMRS resources to transmit DMRS.

[0120] In some embodiments, among the resources for transmitting DMRS, some resources can transmit the first signal in an overlapping manner, and some resources can transmit the first signal without overlapping. That is, the terminal device and the network device can use in combination the resources superimposed by orthogonal and non-orthogonal DMRS resources. In other words, the first DMRS resource and the second DMRS resource are used in combination to transmit DMRS. For example, some data transmission layers can be associated only with the first DMRS resource, and other some data transmission layers can be associated only with the second DMRS resource. For another example, all data transmission layers are associated with both the first DMRS resource and the second DMRS resource (i.e., the resources superimposed by the first DMRS resource and the second DMRS resource). For another example, in the case where some data transmission layers are associated with both the first DMRS resource and the second DMRS resource, some data transmission layers can be associated only with the first DMRS resource, and / or some data transmission layers can be associated only with the second DMRS resource.

[0121] For any DMRS port, the DMRS port can belong to any of the following types: first type DMRS port, second type DMRS port, or third type DMRS port. In other words, the DMRS port can correspond to any of the following: orthogonal DMRS resources; non-orthogonal DMRS resources; or a combination of orthogonal and non-orthogonal DMRS resources.

[0122] It can be understood that the combination of the first DMRS resource and the second DMRS resource can improve the performance of channel estimation.

[0123] It should be noted that the combination of the first DMRS resource and the second DMRS resource may be determined by one or more of the following: pre-defined, indicated by a network device.

[0124] Optionally, the combination of the first DMRS resource and the second DMRS resource may be achieved through the first information and the second information.

[0125] In some embodiments, the DMRS port resources indicated by the first information and the second information may be independent of each other. For example, the first information indicates the DMRS resources associated with some data transmission layers, and the second information indicates the DMRS resources associated with another data transmission layer. Each data association layer can only be indicated by one of the first information and the second information.

[0126] As a possible implementation, the mapping order of the first DMRS resource and the second DMRS resource includes: mapping the first DMRS resource first, and then mapping the second DMRS resource; or, mapping the second DMRS resource first, and then mapping the first DMRS resource. The second DMRS resource may include: one or more of: time-division multiplexed resources, frequency-division multiplexed resources, and resources multiplexed through OCC. The present application does not limit the mapping order of the second DMRS resource. The first DMRS resource may include: time-division multiplexed resources, frequency-division multiplexed resources, and resources multiplexed through OCC. The present application does not limit the mapping order of the first DMRS resource. For example, the first port set includes DMRS ports n1 to n2, and the second port set includes DMRS ports 0 to n1-1. The ports corresponding to the first DMRS resource and the second DMRS resource indicated by the first information and the second information are: ports 0 and 1 in the second port set, and ports n1 and n1+1 in the first port set, for a total of four ports.

[0127] It should be noted that the mapping order of the first DMRS resource and the second DMRS resource may meet the following requirements: pre-defined and configured by a network device.

[0128] In some embodiments, the first information and the second information may be combined to indicate a third type DMRS port, i.e., to determine a third DMRS resource. As described above, the first information may be used to indicate a first DMRS resource (e.g., indicating a first type DMRS port); the second information may be used to indicate a second DMRS resource (e.g., indicating a second type DMRS port). Based on this, the third DMRS resource may be determined by combining the first DMRS resource and the second DMRS resource; or, the third type DMRS port may be determined based on a combination of the first type DMRS port and the second type DMRS port; or, the third DMRS resource may be a superposition of the first DMRS resource and the second DMRS resource. For example, the first information and the second information may be combined to indicate a third DMRS resource associated with a certain data transmission layer.

[0129] Exemplarily, the first port set includes DMRS ports n1 to n2, the second port set includes DMRS ports 0 to n1-1, and the first information and the second information indicate ports 0 and 1 in the second port set and ports n1 and n1+1 in the first port set. Thus, the third-type DMRS ports include port 0 and port n1 corresponding to one port resource, and port 1 and port n1+1 corresponding to one port resource. A data transmission layer can be associated with both the first DMRS resource and the second DMRS resource.

[0130] In some embodiments, the terminal device may receive third information sent by the network device. The third information may be used to indicate information about a third DMRS resource. The information about the third DMRS resource may include the third DMRS resource and / or a port corresponding to the third DMRS resource.

[0131] The third DMRS resource may include the first DMRS resource and the second DMRS resource that are associated with each other. The third DMRS resource may correspond to one or more third-type DMRS ports described above.

[0132] The third information can be indicated by the third field. Table 2 shows an example of the correspondence between the indication value of the third field and the port.

[0133] Table 2

[0134] As shown in Table 2, each orthogonal DMRS port (i.e., second type DMRS port) and non-orthogonal DMRS port (i.e., first type DMRS port) has a one-to-one correspondence. As shown in Table 2, when the indication value of the third field is 2, the orthogonal DMRS ports are ports 0 and 1, and the non-orthogonal DMRS ports are ports n1 and n1+1. The resources of orthogonal DMRS port 0 and non-orthogonal DMRS port n1 are superimposed, and the resources of orthogonal DMRS port 1 and non-orthogonal DMRS port n1+1 are superimposed.

[0135] It should be noted that Table 2 is only an example. For example, some of the contents in Table 2 can be implemented separately. For another example, Table 2 can be supplemented with other contents. For another example, the correspondence between the indication value of the third field in Table 2 and one or more of the "CDM group that cannot transmit data (for orthogonal resources)", "orthogonal DMRS port", and "non-orthogonal DMRS port" can be changed. Exemplarily, when the indication value of the third field is 5, the orthogonal DMRS ports are ports 0 and 1, and the non-orthogonal DMRS ports are ports n1 and n1+1, the resources of the orthogonal DMRS port 0 and the non-orthogonal DMRS port n1 are superimposed, and the resources of the orthogonal DMRS port 1 and the non-orthogonal DMRS port n1+1 are superimposed.

[0136] In some embodiments, both the first DMRS resource and the second DMRS resource may be associated with the first data transmission layer. In other words, the orthogonal DMRS resource and the non-orthogonal DMRS resource may be associated with the same data transmission layer.

[0137] In some embodiments, the first DMRS resource may be associated with the second data transmission layer, and the second DMRS resource may be associated with the third data transmission layer. The second data transmission layer and the third data transmission layer are different. In other words, the first DMRS resource and the second DMRS resource may be associated with different data transmission layers.

[0138] In some embodiments, the terminal device may receive DMRS transmission indication information sent by the network device. The DMRS transmission indication information is used to indicate: DMRS is transmitted via the first DMRS resource; DMRS is transmitted via the second DMRS resource; or DMRS is transmitted via the first DMRS resource and the second DMRS resource (i.e., the third resource).

[0139] When the DMRS transmission indication information indicates that the DMRS is transmitted via the first DMRS resource, the terminal device may determine the configuration of the DMRS resource based on the first configuration information sent by the network device and ignore the second configuration information. When the DMRS transmission indication information indicates that the DMRS is transmitted via the first DMRS resource, the terminal device may determine the DMRS resource based on the first information sent by the network device and ignore the second information. Alternatively, the network device may only indicate the first configuration information and / or the first information, without indicating the second configuration information and / or the second information.

[0140] When the DMRS transmission indication information indicates that the DMRS is transmitted via the second DMRS resource, in this case, the terminal device may determine the configuration of the DMRS resource based on the second configuration information sent by the network device and ignore the first configuration information. When the DMRS transmission indication information indicates that the DMRS is transmitted via the second DMRS resource, the terminal device may determine the DMRS resource based on the second information sent by the network device and ignore the first information. Alternatively, the network device may only indicate the second configuration information and / or the second information, without indicating the first configuration information and / or the first information.

[0141] When the DMRS transmission indication information indicates that the DMRS is transmitted via the first DMRS resource and the second DMRS resource, the DMRS may be a mixed DMRS resource of orthogonal and non-orthogonal configuration. In this case, the terminal device may determine the configuration of the DMRS resource based on the first configuration information and the second configuration information sent by the network device. The terminal device may determine the DMRS resource based on the first information and the second information sent by the network device; alternatively, the terminal device may determine the DMRS resource based on the third information configured by the network device.

[0142] In some embodiments, the DMRS transmission indication information may be carried in one or more of the following: a higher-layer signal, or physical layer signaling. The higher-layer signaling may include, for example, radio resource control (RRC) signaling and / or a media access control element (MAC CE). The physical layer signaling may include, for example, DCI.

[0143] In some embodiments, the DMRS transmission indication information may be used to indicate how the first DMRS resource and the second DMRS resource are to be combined. For example, the DMRS transmission indication information may be used to indicate the mapping order of the first DMRS resource and the second DMRS resource. In other words, the DMRS transmission indication information may be used to indicate whether the first DMRS resource or the second DMRS resource is mapped first.

[0144] In some embodiments, the terminal device may send first capability information to the network device. The first capability information may be used to indicate: whether the terminal device supports overlapping transmission of DMRS and the first signal; and / or whether the terminal device supports overlapping and non-overlapping mixed transmission of DMRS and the first signal. Transmission includes sending and / or receiving. Overlapping and non-overlapping mixed transmission may mean that the terminal device can receive or send DMRS that is a mixed transmission of orthogonal DMRS resources and non-orthogonal DMRS resources.

[0145] The technical solution of the present application is described in detail below through Example 1 and Example 2.

[0146] Example 1

[0147] The method provided in Example 1 includes steps 1.1

[0148] Step 1.1: The terminal device receives first DMRS resource configuration information and / or second DMRS resource configuration information.

[0149] The first DMRS resource configuration information may be used to configure a first DMRS resource. The second DMRS resource configuration information may be used to configure a second DMRS resource. The first DMRS resource may transmit both DMRS and data. The second DMRS resource may be used only to transmit DMRS.

[0150] The method provided in Example 1 may further include steps 1.2 and 1.3.

[0151] Step 1.2: The terminal device receives the first information and / or the second information.

[0152] The first information may be used to indicate the first DMRS resource, and the second information may be used to indicate the second DMRS resource. The second information may be indicated by the original DMRS port indication field (second DMRS resource and port) in the DCI. The first information may be indicated by adding a new field. The new field may indicate a non-orthogonal DMRS port (first DMRS resource and port). The terminal device receives or sends the first DMRS resource and / or the second DMRS resource based on the first information and / or the second information.

[0153] The first DMRS resource may correspond to one or more first-type DMRS ports.

[0154] The first type DMRS port may belong to a first port set.

[0155] In Example 1, different Type-1 DMRS ports occupy the same time domain resources but different frequency domain resources. The number of time domain symbols occupied by the Type-1 DMRS ports is fixed, predefined, or configured. The frequency domain resources occupied by the different Type-1 DMRS ports are non-overlapping resource units. Figure 4A illustrates an example of this situation.

[0156] Example 2: Different Type-1 DMRS ports occupy different time domain resources but the same frequency domain resources. The number of time domain symbols occupied by the Type-1 DMRS port is fixed, predefined, or configured. The frequency domain resources occupied by different Type-1 DMRS ports are the same. Figure 4B is an example diagram of this situation.

[0157] Example 3: Different first-type DMRS ports occupy different time domain resources, but the frequency domain resources they occupy are the same. The time domain symbols occupied by each first-type DMRS port are discontinuous. The number of time domain symbols occupied by the first-type DMRS port is fixed, predefined, or configured. The frequency domain resources occupied by different first-type DMRS ports are the same frequency domain resources. Figure 4D is an example diagram of this situation.

[0158] Example 4: Different first-type DMRS ports occupy the same time domain resources and the same frequency domain resources, and maintain orthogonality through different OCC codes. In other words, different first-type DMRS ports belong to different CDM groups. The time domain symbols occupied by each first-type DMRS port are discontinuous. The number of time domain symbols occupied by the first-type DMRS port is fixed, or predefined, or configured. The occupied frequency domain resources are fixed, or predefined, or configured. Figure 4C is an example diagram of this situation.

[0159] The second DMRS resource may correspond to one or more second-type DMRS ports. The second-type DMRS ports belong to a second port set. The second DMRS resource and the second-type DMRS port may refer to the contents of the related art and will not be described in detail. For example, the second DMRS resource may be DMRS type 1 and DMRS type 2.

[0160] Optionally, an initial sequence of the first DMRS resource is offset to reduce interference between the DMRS and data.

[0161] Optionally, the combination mode of the first DMRS resource and the second DMRS resource may be determined by predefinition or network indication. The network indication mode will be described in Example 2. The following uses predefinition as an example to introduce two combination modes, namely Mode 1 and Mode 2.

[0162] Method 1: first map the second DMRS resource, then map the first DMRS resource; or, first map the first DMRS resource, then map the second DMRS resource. The mapping of the second DMRS resource includes time-division multiplexing resources, frequency-division multiplexing resources, and resources multiplexed through OCC, and the mapping order is not limited. The mapping of the first DMRS resource also includes the several resource mapping methods in the above examples, and the mapping order is not limited. For example, the first port set includes DMRS ports n1 to n2, and the second port set includes DMRS ports 0 to n1-1. The first information and the second information indicate ports 0 and 1 in the second port set, and ports n1 and n1+1 in the first port set, for a total of four ports. The port resources indicated by the first information and the second information are independent. Some data transmission layers are associated with the first DMRS resource, and other data transmission layers are associated with the second DMRS resource. The performance of channel estimation is improved by combining orthogonal DMRS and non-orthogonal DMRS.

[0163] Method 2: Determine the third type DMRS port, i.e., determine the third DMRS resource, based on the indications of the first information and the second information. It is necessary to add instructions to the protocol to combine the first type DMRS port and the second type DMRS port to determine the third type DMRS port. It can be understood that each third DMRS resource is a superposition of the first DMRS resource and the second DMRS resource. For example, the first port set includes DMRS ports n1 to n2, and the second port set includes DMRS ports 0 to n1-1. The indications of the first information and the second information are ports 0 and 1 in the second port set, and ports n1 and n1+1 in the first port set. Then, the third type DMRS port includes one port resource corresponding to port 0 and port n1, and one port resource corresponding to port 1 and port n1+1. Each data transmission layer is associated with both the first DMRS resource and the second DMRS resource. The channel estimation performance of each transmission layer is improved by combining orthogonal DMRS and non-orthogonal DMRS.

[0164] In mode 2, the third DMRS resource corresponds to one or more third-type DMRS ports, and the third-type DMRS port includes a first-type DMRS port and a second-type DMRS port. The second-type DMRS ports included in different third-type DMRS ports are orthogonal to each other, and the first-type DMRS port satisfies the contents described in the above four examples (Examples 1 to 4) and will not be repeated. The resources corresponding to the first-type DMRS port can be transmitted in overlapping fashion with data, and the resources corresponding to the second-type DMRS port cannot be transmitted in overlapping fashion with data. Figure 5A is a schematic diagram of DMRS resources corresponding to a third-type DMRS port.

[0165] Step 1.3: The terminal device receives the third information.

[0166] The third information is used to indicate the associated orthogonal DMRS ports and non-orthogonal DMRS ports. The associated orthogonal DMRS ports and non-orthogonal DMRS ports can be referred to as third-type DMRS ports. It can be understood that the third-type DMRS ports include both orthogonal DMRS resources and non-orthogonal DMRS resources.

[0167] In one example, each orthogonal DMRS port and non-orthogonal DMRS port have a one-to-one correspondence. An example is shown in Table 2. As shown in Table 2, when the indication value of the third information is 2, the orthogonal DMRS ports are ports 0 and 1, and the non-orthogonal DMRS ports are ports n1 and n1+1. The resources of orthogonal DMRS port 0 and non-orthogonal DMRS port n1 are superimposed, and the resources of orthogonal DMRS port 1 and non-orthogonal DMRS port n1+1 are superimposed.

[0168] It should be noted that either step 1.2 or step 1.3 can be performed alternatively.

[0169] Example 2

[0170] Example 2 can be implemented based on Example 1.

[0171] The method provided in Example 2 may include step 2.0. Step 2.0 may be performed before step 1.1 of Example 1.

[0172] Step 2.0: The terminal device receives DMRS transmission indication information sent by the network device.

[0173] The DMRS transmission indication information may be used to indicate any one of the following: orthogonal DMRS (second DMRS resource), non-orthogonal DMRS (first DMRS resource), or a mixture of orthogonal and non-orthogonal DMRS (third DMRS resource).

[0174] Optionally, when the DMRS transmission indication information indicates orthogonal DMRS, the terminal device can determine the DMRS resources based on the second DMRS resource configuration information sent by the network device and ignore the first DMRS resource configuration information; and / or, when the DMRS transmission indication information indicates orthogonal DMRS, the terminal device can determine the DMRS resources based on the second information in Example 1 and ignore the first information.

[0175] Optionally, when the DMRS transmission indication information indicates non-orthogonal DMRS, the terminal device can receive the first DMRS resource configuration information sent by the network device to determine the DMRS resource and ignore the second DMRS resource configuration information; and / or, when the DMRS transmission indication information indicates non-orthogonal DMRS, the terminal device can determine the DMRS resource based on the first information in Example 1 and ignore the second information.

[0176] Optionally, when the DMRS indication information indicates a mixed DMRS of orthogonal and non-orthogonal types, the terminal device may receive first DMRS resource configuration information and second DMRS resource configuration information sent by the network device; and / or, when the DMRS transmission indication information indicates a mixed DMRS of orthogonal and non-orthogonal types, the terminal device may determine the DMRS resources based on the first information and the second information in Example 1, or the terminal device may determine the DMRS resources based on the third information in Example 1.

[0177] The DMRS transmission indication information is carried in higher layer signaling, such as RRC signaling or MAC CE signaling. The DMRS transmission indication information can also be carried in physical layer signaling, such as DCI.

[0178] The resource mapping of the orthogonal DMRS port and the non-orthogonal DMRS port can be in a predefined manner as described in Example 1, or it can be mapped in a manner indicated by the network device, that is, the network device indicates whether to map the orthogonal resources first or the non-orthogonal resources first. For specific details, please refer to Example 1 above.

[0179] When the number of data transmission layers is greater than 1, the following situations exist: all transmission layers are associated with orthogonal DMRS resources; all transmission layers are associated with non-orthogonal DMRS resources; some transmission layers are associated with orthogonal DMRS resources, and some transmission layers are associated with non-orthogonal DMRS resources; or some transmission layers are associated with superimposed resources of orthogonal DMRS resources and non-orthogonal DMRS resources.

[0180] Each DMRS port may correspond to any one of the following DMRS resources: an orthogonal DMRS resource; a non-orthogonal DMRS resource; or a DMRS resource that is a superposition of orthogonal and non-orthogonal DMRS resources.

[0181] The method embodiments of the present application are described in detail above, and the device embodiments of the present application are described in detail below. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, so for parts not described in detail, reference can be made to the above method embodiments.

[0182] FIG6 is a schematic structural diagram of a terminal device 600 provided in an embodiment of the present application. The terminal device 600 may include a receiving unit 610 .

[0183] The receiving unit 610 is configured to receive first configuration information; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0184] In some embodiments, the first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

[0185] In some embodiments, the first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

[0186] In some embodiments, the third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

[0187] In some embodiments, the first DMRS port and the second DMRS port are both the first type DMRS ports, and the resources of the first type DMRS port include: the time domain resources occupied by the first DMRS port and the second DMRS port are the same, and the frequency domain resources occupied are different; the time domain resources occupied by the first DMRS port and the second DMRS port are different, and the frequency domain resources occupied are the same; or, the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

[0188] In some embodiments, when the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by different OCC codes.

[0189] In some embodiments, the number of time-domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

[0190] In some embodiments, the time domain symbols occupied by the first type DMRS ports are discontinuous.

[0191] In some embodiments, the terminal device is further used to: receive first information; wherein the first information is used to indicate information of the first DMRS resource.

[0192] In some embodiments, the information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

[0193] In some embodiments, the terminal device is further used to: receive second information; wherein the second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal.

[0194] In some embodiments, the first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

[0195] In some embodiments, the first information and the second information are both indicated by a third field.

[0196] In some embodiments, the terminal device is also used to: receive third information; wherein the third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and a second DMRS resource, the second DMRS resource is used for the transmission of the DMRS and is not used for the transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

[0197] In some embodiments, the terminal device is also used to: send first capability information; wherein the first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or whether the terminal device supports overlapping transmission and non-overlapping mixed transmission of the DMRS and the first signal.

[0198] In some embodiments, the terminal device is further used to: receive second configuration information; the second configuration information is used to configure a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal.

[0199] In some embodiments, the first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

[0200] In some embodiments, the first DMRS resources are associated with a second data transmission layer; the second DMRS resources are both associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

[0201] In some embodiments, the terminal device is further used to: receive DMRS transmission indication information; wherein the DMRS transmission indication information is used to indicate: the DMRS is transmitted through the first DMRS resource; the DMRS is transmitted through the second DMRS resource; or, the DMRS is transmitted through the first DMRS resource and the second DMRS resource.

[0202] In some embodiments, when the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; when the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

[0203] In some embodiments, the DMRS transmission indication information is carried by one or more of the following: RRC signaling, MAC CE, and DCI.

[0204] In some embodiments, the mapping order of the first DMRS resource and the second DMRS resource includes: mapping the first DMRS resource first, and then mapping the second DMRS resource; or mapping the second DMRS resource first, and then mapping the first DMRS resource.

[0205] In some embodiments, the mapping order satisfies: being predefined and being configured by a network device.

[0206] In some embodiments, the first signal includes one or more of the following: data, control information.

[0207] In an optional embodiment, the receiving unit 610 may be a transceiver 830. The terminal device 600 may further include a processor 810 and a memory 820, as specifically shown in FIG8 .

[0208] 7 is a schematic structural diagram of a network device 700 provided in an embodiment of the present application. The network device 700 may include a sending unit 710.

[0209] The sending unit 710 is used to send first configuration information to the terminal device; wherein the first configuration information is used to configure a first DMRS resource, and the first DMRS resource is used for overlapping transmission of a DMRS and a first signal.

[0210] In some embodiments, the first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

[0211] In some embodiments, the first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

[0212] In some embodiments, the third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

[0213] In some embodiments, the first DMRS port and the second DMRS port are both the first type DMRS ports, and the resources of the first type DMRS port include: the time domain resources occupied by the first DMRS port and the second DMRS port are the same, and the frequency domain resources occupied are different; the time domain resources occupied by the first DMRS port and the second DMRS port are different, and the frequency domain resources occupied are the same; or, the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

[0214] In some embodiments, when the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by different OCC codes.

[0215] In some embodiments, the number of time-domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

[0216] In some embodiments, the time domain symbols occupied by the first type DMRS ports are discontinuous.

[0217] In some embodiments, the network device is further used to: send first information to the terminal device; wherein the first information is used to indicate information of the first DMRS resource.

[0218] In some embodiments, the information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

[0219] In some embodiments, the network device is further used to: send second information to the terminal device; wherein the second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal.

[0220] In some embodiments, the first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

[0221] In some embodiments, the first information and the second information are both indicated by a third field.

[0222] In some embodiments, the network device is also used to: send third information to the terminal device; wherein the third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and the second DMRS resource, the second DMRS resource is used for the transmission of the DMRS and is not used for the transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

[0223] In some embodiments, the network device is also used to: receive first capability information sent by the terminal device; wherein the first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or whether the terminal device supports overlapping and non-overlapping mixed transmission of the DMRS and the first signal.

[0224] In some embodiments, the network device is further used to: send second configuration information to the terminal device; the second configuration information is used to configure a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal.

[0225] In some embodiments, the first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

[0226] In some embodiments, the first DMRS resources are associated with a second data transmission layer; the second DMRS resources are both associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

[0227] In some embodiments, the network device is further used to: send DMRS transmission indication information to the terminal device; wherein the DMRS transmission indication information is used to indicate: the DMRS is transmitted through the first DMRS resource; the DMRS is transmitted through the second DMRS resource; or, the DMRS is transmitted through the first DMRS resource and the second DMRS resource.

[0228] In some embodiments, when the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; when the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

[0229] In some embodiments, the DMRS transmission indication information is carried by one or more of the following: RRC signaling, MAC CE, and DCI.

[0230] In some embodiments, the mapping order of the first DMRS resource and the second DMRS resource includes: mapping the first DMRS resource first, and then mapping the second DMRS resource; or mapping the second DMRS resource first, and then mapping the first DMRS resource.

[0231] In some embodiments, the mapping order satisfies: being predefined and being configured by a network device.

[0232] In some embodiments, the first signal includes one or more of the following: data, control information.

[0233] In an optional embodiment, the sending unit 710 may be a transceiver 830. The network device 700 may further include a processor 810 and a memory 820, as specifically shown in FIG8 .

[0234] Figure 8 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 8 indicate that the unit or module is optional. The device 800 can be used to implement the method described in the above method embodiment. The device 800 can be a chip, a terminal device, or a network device.

[0235] The device 800 may include one or more processors 810. The processor 810 may support the device 800 to implement the method described in the method embodiment above. The processor 810 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0236] The apparatus 800 may further include one or more memories 820. The memories 820 store programs that can be executed by the processor 810, causing the processor 810 to perform the methods described in the above method embodiments. The memories 820 may be independent of the processor 810 or integrated into the processor 810.

[0237] The apparatus 800 may further include a transceiver 830. The processor 810 may communicate with other devices or chips via the transceiver 830. For example, the processor 810 may transmit and receive data with other devices or chips via the transceiver 830.

[0238] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0239] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0240] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0241] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0242] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0243] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0244] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0245] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0246] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0247] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0248] In the embodiments of this application, the term "include" can refer to direct inclusion or indirect inclusion. Alternatively, the term "include" in the embodiments of this application can be replaced with "indicates" or "is used to determine." For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B."

[0249] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0250] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0251] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0252] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0253] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0254] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The terminal device receives the first configuration information; The first configuration information is used to configure a first demodulation reference symbol DMRS resource, and the first DMRS resource is used for overlapping transmission of the DMRS and the first signal.

2. The method according to claim 1, characterized in that The first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

3. The method according to claim 1, characterized in that The first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

4. The method according to claim 3, characterized in that The third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

5. The method according to claim 2 or 4, characterized in that The first DMRS port and the second DMRS port are both DMRS ports of the first type, and the resources of the first type DMRS port include: The first DMRS port and the second DMRS port occupy the same time domain resources but different frequency domain resources; The first DMRS port and the second DMRS port occupy different time domain resources but the same frequency domain resources; or, The time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

6. The method according to claim 5, characterized in that In a case where the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by using different orthogonal cover codes OCC codes.

7. The method according to any one of claims 2 to 6, characterized in that The number of time domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

8. The method according to any one of claims 2 to 7, characterized in that The time domain symbols occupied by the first type DMRS ports are discontinuous.

9. The method according to claims 1-8, characterized in that The method further includes: the terminal device receiving first information; The first information is used to indicate information about the first DMRS resource.

10. The method according to claim 9, characterized in that The information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

11. The method according to claim 9 or 10, characterized in that Also includes: The terminal device receives second information; The second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

12. The method according to claim 11, characterized in that The first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

13. The method according to claim 11, characterized in that The first information and the second information are both indicated by a third field.

14. The method according to any one of claims 1 to 13, characterized in that Also includes: The terminal device receives third information; The third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and a second DMRS resource, the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

15. The method according to any one of claims 1 to 14, characterized in that The method further comprises: The terminal device sends first capability information; The first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or, Whether the terminal device supports overlapping transmission and non-overlapping mixed transmission of the DMRS and the first signal.

16. The method according to any one of claims 1 to 15, characterized in that The method further comprises: The terminal device receives second configuration information; The second configuration information is used to configure a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and is not Used for transmitting the first signal.

17. The method according to claim 16, characterized in that The first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

18. The method according to claim 16, characterized in that The first DMRS resources are associated with a second data transmission layer; the second DMRS resources are associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

19. The method according to any one of claims 16 to 18, characterized in that The method further comprises: The terminal device receives DMRS transmission indication information; The DMRS transmission indication information is used to indicate: The DMRS is transmitted through the first DMRS resource; The DMRS is transmitted via the second DMRS resource; or The DMRS is transmitted through the first DMRS resource and the second DMRS resource.

20. The method according to claim 19, wherein In a case where the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; In a case where the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

21. The method according to claim 19 or 20, characterized in that The DMRS transmission indication information is carried in one or more of the following: radio resource control RRC signaling, media access layer control element MAC CE, and downlink control information DCI.

22. The method according to any one of claims 17 to 21, characterized in that The mapping order of the first DMRS resource and the second DMRS resource includes: First map the first DMRS resource, and then map the second DMRS resource; or, The second DMRS resource is mapped first, and then the first DMRS resource is mapped.

23. The method according to claim 22, characterized in that The mapping order satisfies: being predefined and being configured by the network device.

24. The method according to any one of claims 1 to 23, characterized in that The first signal includes one or more of the following: data, control information.

25. A wireless communication method, characterized in that: include: The network device sends first configuration information to the terminal device; The first configuration information is used to configure a first demodulation reference symbol DMRS resource, and the first DMRS resource is used for overlapping transmission of the DMRS and the first signal.

26. The method according to claim 25, characterized in that The first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

27. The method according to claim 25, characterized in that The first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

28. The method according to claim 27, characterized in that The third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

29. The method according to claim 26 or 28, characterized in that The first DMRS port and the second DMRS port are both DMRS ports of the first type, and the resources of the first type DMRS port include: The first DMRS port and the second DMRS port occupy the same time domain resources but different frequency domain resources; The first DMRS port and the second DMRS port occupy different time domain resources but the same frequency domain resources; or, The time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

30. The method according to claim 29, wherein In a case where the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by using different orthogonal cover codes OCC codes.

31. The method according to any one of claims 26 to 30, characterized in that The number of time domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

32. The method according to any one of claims 26 to 31, characterized in that The time domain symbols occupied by the first type DMRS ports are discontinuous.

33. The method according to claims 25-32, characterized in that The method further includes: the network device sending first information to the terminal device; The first information is used to indicate information about the first DMRS resource.

34. The method according to claim 33, wherein The information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

35. The method according to claim 33 or 34, characterized in that Also includes: The network device sends second information to the terminal device; The second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

36. The method according to claim 35, characterized in that The first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

37. The method according to claim 35, wherein The first information and the second information are both indicated by a third field.

38. The method according to any one of claims 25 to 37, wherein: Also includes: The network device sends third information to the terminal device; The third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and the second DMRS resource, the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

39. The method according to any one of claims 25 to 38, wherein The method further comprises: The network device receives the first capability information sent by the terminal device; The first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or, Whether the terminal device supports overlapping and non-overlapping mixed transmission of the DMRS and the first signal.

40. The method according to any one of claims 25 to 39, wherein: The method further comprises: The network device sends second configuration information to the terminal device; The second configuration information is used to configure a second DMRS resource, where the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

41. The method according to claim 40, wherein The first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

42. The method according to claim 40, wherein The first DMRS resources are associated with a second data transmission layer; the second DMRS resources are associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

43. The method according to any one of claims 40 to 42, characterized in that The method further comprises: The network device sends DMRS transmission indication information to the terminal device; The DMRS transmission indication information is used to indicate: The DMRS is transmitted through the first DMRS resource; The DMRS is transmitted via the second DMRS resource; or The DMRS is transmitted through the first DMRS resource and the second DMRS resource.

44. The method according to claim 43, wherein In a case where the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; In a case where the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

45. The method according to claim 43 or 44, characterized in that The DMRS transmission indication information is carried in one or more of the following: radio resource control RRC signaling, media access layer control element MAC CE, and downlink control information DCI.

46. The method according to any one of claims 40 to 45, wherein: The mapping order of the first DMRS resource and the second DMRS resource includes: First map the first DMRS resource, and then map the second DMRS resource; or, The second DMRS resource is mapped first, and then the first DMRS resource is mapped.

47. The method according to claim 46, wherein The mapping order satisfies: being predefined and being configured by the network device.

48. The method according to any one of claims 25 to 47, wherein: The first signal includes one or more of the following: data, control information.

49. A terminal device, characterized in that: include: A receiving unit, configured to receive first configuration information; The first configuration information is used to configure a first demodulation reference symbol DMRS resource, and the first DMRS resource is used for overlapping transmission of the DMRS and the first signal.

50. The terminal device according to claim 49, characterized in that The first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

51. The terminal device according to claim 49, characterized in that The first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

52. The terminal device according to claim 51, characterized in that The third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

53. The terminal device according to claim 50 or 52, characterized in that: The first DMRS port and the second DMRS port are both DMRS ports of the first type, and the resources of the first type DMRS port include: The first DMRS port and the second DMRS port occupy the same time domain resources but different frequency domain resources; The first DMRS port and the second DMRS port occupy different time domain resources but the same frequency domain resources; or, The time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

54. The terminal device according to claim 53, characterized in that In a case where the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by using different orthogonal cover codes OCC codes.

55. The terminal device according to any one of claims 50 to 54, characterized in that: The number of time domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

56. The terminal device according to any one of claims 50-55, characterized in that The time domain symbols occupied by the first type DMRS ports are discontinuous.

57. The terminal device according to claims 49-56, characterized in that: The terminal device is further configured to: receive first information; The first information is used to indicate information about the first DMRS resource.

58. The terminal device according to claim 57, characterized in that The information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

59. The terminal device according to claim 57 or 58, characterized in that: The terminal device is further configured to: receiving second information; The second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

60. The terminal device according to claim 59, characterized in that The first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

61. The terminal device according to claim 59, characterized in that The first information and the second information are both indicated by a third field.

62. The terminal device according to any one of claims 49 to 61, characterized in that: The terminal device is further configured to: receiving third information; The third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and a second DMRS resource, the second DMRS resource is used for transmission of the DMRS and not for transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

63. The terminal device according to any one of claims 49 to 62, characterized in that: The terminal device is further configured to: Sending first capability information; The first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or, Whether the terminal device supports overlapping transmission and non-overlapping mixed transmission of the DMRS and the first signal.

64. The terminal device according to any one of claims 49 to 63, characterized in that: The terminal device is further configured to: receiving second configuration information; The second configuration information is used to configure a second DMRS resource, where the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

65. The terminal device according to claim 64, characterized in that The first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

66. The terminal device according to claim 64, characterized in that The first DMRS resources are associated with a second data transmission layer; the second DMRS resources are associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

67. The terminal device according to any one of claims 64-66, characterized in that: The terminal device is further configured to: Receiving DMRS transmission indication information; The DMRS transmission indication information is used to indicate: The DMRS is transmitted through the first DMRS resource; The DMRS is transmitted via the second DMRS resource; or The DMRS is transmitted through the first DMRS resource and the second DMRS resource.

68. The terminal device according to claim 67, characterized in that In a case where the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; In a case where the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

69. The terminal device according to claim 67 or 68, characterized in that The DMRS transmission indication information is carried in one or more of the following: radio resource control RRC signaling, media access layer control element MAC CE, and downlink control information DCI.

70. The terminal device according to any one of claims 65 to 69, characterized in that: The mapping order of the first DMRS resource and the second DMRS resource includes: First map the first DMRS resource, and then map the second DMRS resource; or, The second DMRS resource is mapped first, and then the first DMRS resource is mapped.

71. The terminal device according to claim 70, characterized in that The mapping order satisfies: being predefined and being configured by the network device.

72. The terminal device according to any one of claims 49 to 71, characterized in that: The first signal includes one or more of the following: data, control information.

73. A network device, characterized in that include: A sending unit, configured to send first configuration information to a terminal device; The first configuration information is used to configure a first demodulation reference symbol DMRS resource, and the first DMRS resource is used for overlapping transmission of the DMRS and the first signal.

74. The network device according to claim 73, characterized in that The first DMRS resource corresponds to one or more first-type DMRS ports, and the first configuration information is used to configure resources of the first-type DMRS ports.

75. The network device according to claim 73, characterized in that The first DMRS resource and the second DMRS resource correspond to one or more third-type DMRS ports, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

76. The network device according to claim 75, characterized in that The third type DMRS port includes a first type DMRS port and a second type DMRS port, the first DMRS resource corresponds to the first type DMRS port, the second DMRS resource corresponds to the second type DMRS port, the first type DMRS port and the second type DMRS port are associated, and the first configuration information is used to configure the resources of the first type DMRS port.

77. The network device according to claim 74 or 76, characterized in that The first DMRS port and the second DMRS port are both DMRS ports of the first type, and the resources of the first type DMRS port include: The first DMRS port and the second DMRS port occupy the same time domain resources but different frequency domain resources; The first DMRS port and the second DMRS port occupy different time domain resources but the same frequency domain resources; or, The time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same.

78. The network device according to claim 77, characterized in that In a case where the time domain resources and frequency domain resources occupied by the first DMRS port and the second DMRS port are the same, the resources of the first DMRS port and the resources of the second DMRS port are orthogonalized by using different orthogonal cover codes OCC codes.

79. The network device according to any one of claims 74 to 78, characterized in that The number of time domain symbols occupied by the first-type DMRS port satisfies one or more of the following: fixed, predefined, and configured by a network device.

80. The network device according to any one of claims 74 to 79, characterized in that: The time domain symbols occupied by the first type DMRS ports are discontinuous.

81. The network device according to claims 73-80, characterized in that The network device is further configured to: send first information to the terminal device; The first information is used to indicate information about the first DMRS resource.

82. The network device according to claim 81, wherein: The information of the first DMRS resource includes: the first DMRS resource and / or a port corresponding to the first DMRS resource.

83. The network device according to claim 81 or 82, characterized in that: The network device is further configured to: Sending second information to the terminal device; The second information is used to indicate information of a second DMRS resource, and the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

84. The network device according to claim 83, wherein: The first information is indicated by a first field, the second information is indicated by a second field, and the first field and the second field are different.

85. The network device according to claim 83, wherein: The first information and the second information are both indicated by a third field.

86. The network device according to any one of claims 73 to 85, characterized in that The network device is further configured to: sending third information to the terminal device; The third information is used to indicate information of a third DMRS resource, the third DMRS resource includes the first DMRS resource and the second DMRS resource, the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal, and the first DMRS resource and the second DMRS resource are associated.

87. The network device according to any one of claims 73 to 86, characterized in that: The network device is further configured to: receiving first capability information sent by the terminal device; The first capability information is used to indicate: whether the terminal device supports overlapping transmission of the DMRS and the first signal; and / or, Whether the terminal device supports overlapping and non-overlapping mixed transmission of the DMRS and the first signal.

88. The network device according to any one of claims 73 to 87, characterized in that: The network device is further configured to: Sending second configuration information to the terminal device; The second configuration information is used to configure a second DMRS resource, where the second DMRS resource is used for transmission of the DMRS and is not used for transmission of the first signal.

89. The network device according to claim 88, characterized in that The first DMRS resource and the second DMRS resource are both associated with a first data transmission layer.

90. The network device according to claim 88, wherein: The first DMRS resources are associated with a second data transmission layer; the second DMRS resources are associated with a third data transmission layer, and the second data transmission layer and the third data transmission layer are different.

91. The network device according to any one of claims 88 to 90, characterized in that: The network device is further configured to: Sending DMRS transmission indication information to the terminal device; The DMRS transmission indication information is used to indicate: The DMRS is transmitted through the first DMRS resource; The DMRS is transmitted via the second DMRS resource; or The DMRS is transmitted through the first DMRS resource and the second DMRS resource.

92. The network device according to claim 91, wherein: In a case where the DMRS is transmitted only through the first DMRS resource, the terminal device ignores the second configuration information; In a case where the DMRS is transmitted only through the second DMRS resource, the terminal device ignores the first configuration information.

93. The network device according to claim 91 or 92, characterized in that: The DMRS transmission indication information is carried in one or more of the following: radio resource control RRC signaling, media access layer control element MAC CE, and downlink control information DCI.

94. The network device according to any one of claims 88 to 93, characterized in that The mapping order of the first DMRS resource and the second DMRS resource includes: First map the first DMRS resource, and then map the second DMRS resource; or, The second DMRS resource is mapped first, and then the first DMRS resource is mapped.

95. The network device according to claim 94, characterized in that The mapping order satisfies: being predefined and being configured by the network device.

96. The network device according to any one of claims 73 to 95, characterized in that The first signal includes one or more of the following: data, control information.

97. A terminal device, characterized in that The terminal device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so that the terminal device executes the method according to any one of claims 1 to 24.

98. A network device, characterized in that The network device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so as to enable the network device to execute the method according to any one of claims 25 to 48.

99. A device, characterized in that The device comprises a processor configured to call a program from a memory so as to cause the device to execute the method according to any one of claims 1 to 48.

100. A chip, characterized in that: The device comprises a processor configured to call a program from a memory so that a device equipped with the chip executes the method according to any one of claims 1 to 48.

101. A computer-readable storage medium, characterized in that A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 48.

102. A computer program product, characterized in that The method comprises a program for causing a computer to execute the method according to any one of claims 1 to 48.

103. A computer program, characterized in that The computer program causes a computer to execute the method according to any one of claims 1 to 48.

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