Signal transmission method and apparatus, and communication device

Abstract

The present application relates to the technical field of communications, and discloses a signal transmission method and apparatus, and a communication device. The method in embodiments of the present application comprises: a communication device sends or receives a demodulation reference signal (DMRS), wherein the DMRS is superimposed with a first signal on a first resource, and the first resource comprises at least one of the following: a first time domain resource; a first frequency domain resource; and a first spatial domain resource, wherein the first spatial domain resource comprises a first port, or a first layer, or a first stream.

Description

Signal transmission methods, devices and communication equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510376173.1, filed on March 27, 2025, entitled “Signal Transmission Method, Apparatus and Communication Equipment”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, specifically relating to a signal transmission method, apparatus, and communication equipment. Background Technology

[0004] In the signal transmission schemes provided in related technologies, frequency division multiplexing (FDM) or time division multiplexing (TDM) can be used to multiplex the demodulation reference signal (DMRS) with other physical channels (such as data channels, control channels, broadcast channels, etc.) or reference signals, thereby ensuring their orthogonality.

[0005] However, in the aforementioned signal transmission scheme, DMRS will always consume certain resources, thus affecting the overall spectrum resource utilization rate. Summary of the Invention

[0006] This application provides a signal transmission method, apparatus, and communication device that can improve the overall utilization rate of spectrum resources.

[0007] In a first aspect, a signal transmission method is provided, comprising: a communication device transmitting or receiving a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0008] In a second aspect, a signal transmission device is provided, comprising: a transmission module for transmitting or receiving a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first signal on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0009] Thirdly, a signal transmission device is provided, the device being configured to perform the steps of the method described in the first aspect.

[0010] Fourthly, a communication device is provided, the communication device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0011] Fifthly, a communication device is provided, including a processor and a communication interface, wherein the communication interface is used to transmit or receive a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first signal on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0012] In a sixth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0013] A seventh aspect provides a wireless communication system, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the method described in the first aspect, and / or the network-side device is configured to perform the steps of the method described in the first aspect.

[0014] Eighthly, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being used to run programs or instructions to implement the steps of the method as described in the first aspect.

[0015] In a ninth aspect, a computer program / program product is provided, the computer program / program product being stored in a storage medium, the computer program / program product being executed by at least one processor to perform the steps of the method as described in the first aspect.

[0016] In the embodiments of this application, when the communication device transmits or receives DMRS, it superimposes DMRS and a first signal on a first resource, wherein the first resource includes at least one of a first time domain resource, a first frequency domain resource, and a first spatial domain resource, so that DMRS and the first signal can be transmitted on at least part of the same time and frequency resources, thereby effectively improving the overall spectrum resource utilization. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of a wireless communication system provided in an exemplary embodiment of this application.

[0018] Figure 2 is a schematic flowchart of a signal transmission method provided in an exemplary embodiment of this application.

[0019] Figure 3a is one of the schematic diagrams of signal superposition based on partial time-domain resources provided in an exemplary embodiment of this application.

[0020] Figure 3b is a second schematic diagram of a superposition method based on partial time-domain resources provided in an exemplary embodiment of this application.

[0021] Figure 3c is a third schematic diagram of a superposition method based on partial time-domain resources provided in an exemplary embodiment of this application.

[0022] Figure 3d is a fourth schematic diagram of a superposition method based on partial time-domain resources provided in an exemplary embodiment of this application.

[0023] Figure 4a is one of the schematic diagrams of signal superposition based on partial frequency domain resources provided in an exemplary embodiment of this application.

[0024] Figure 4b is a second schematic diagram of a superposition method based on partial frequency domain resources provided in an exemplary embodiment of this application.

[0025] Figure 5 is a schematic diagram of a signal superposition method based on partial streams or ports provided in an exemplary embodiment of this application.

[0026] Figure 6 is one of the schematic diagrams of signal superposition based on time-domain resources provided in an exemplary embodiment of this application.

[0027] Figure 7 is a second schematic diagram of a signal superposition method based on time-domain resources provided in an exemplary embodiment of this application.

[0028] Figure 8 is a schematic diagram of the structure of a signal transmission device provided in an exemplary embodiment of this application.

[0029] Figure 9 is a schematic diagram of the structure of a communication device provided in an exemplary embodiment of this application.

[0030] Figure 10 is a schematic diagram of the structure of a terminal provided in an exemplary embodiment of this application.

[0031] Figure 11 is a schematic diagram of the structure of a network-side device provided in an exemplary embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0035] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0036] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. Furthermore, in addition to the terminals described above, terminal 11 can also be a chip within a terminal, such as a modem chip, a system-on-chip (SoC), etc. It should be noted that the specific type of terminal 11 is not limited in the embodiments of this application.

[0037] Network-side equipment 12 may include access network equipment or core network equipment. Access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, wireless local area network (WLAN) access points (APs), or wireless Fidelity (WiFi) nodes, etc. Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0038] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. Functions include BSF, Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), and Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform station).It should be noted that the embodiments of this application only use the core network equipment in the NR system as an example for introduction, and do not limit the specific type of core network equipment. If the name of the core network equipment mentioned in the embodiments of this application changes in subsequent protocol versions (e.g., 6G), it is also within the scope of protection of this application.

[0039] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0040] The technical solutions provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0041] Figure 2 shows a flowchart of a signal transmission method 200 provided in an exemplary embodiment of this application. This method 200 can be executed by, but is not limited to, a communication device (such as a terminal or network-side device), specifically by hardware and / or software installed in the communication device. In this embodiment, the method 200 may include at least the following steps.

[0042] S210, Communication equipment transmits or receives Demodulation Reference Signal (DMRS).

[0043] Wherein, if the communication device is a terminal, then the terminal can send DMRS to network-side devices or other terminals, and can also receive DMRS from network-side devices or other terminals; similarly, if the communication device is a network-side device, then the network-side device can send DMRS to the terminal, and can also receive DMRS from the terminal, without any limitation.

[0044] The DMRS and the first signal are superimposed on the first resource, such as partially or completely superimposed. In other words, the signal transmission scheme provided in this embodiment superimposes the DMRS and the first signal on the first resource, allowing the DMRS and the first signal to be transmitted on at least partially identical time-frequency spatial domain resources. This effectively improves the overall spectrum resource utilization rate and avoids the problem of low overall spectrum resource utilization that exists when the DMRS and the first signal are multiplexed using FDM or TDM methods in related technologies.

[0045] Optionally, the first signal may include, but is not limited to, at least one of a data channel, a control channel, a broadcast channel, a reference signal, etc. The data channels may include, but are not limited to, Physical Uplink Shared Channel (PUSCH), Physical Downlink Shared Channel (PDSCH), Physical Sidelink Shared Channel (PSSCH), etc.; the control channels may include, but are not limited to, Physical Downlink Control Channel (PDCCH), Physical Uplink Control Channel (PUCCH), Physical Sidelink Control Channel (PSCCH), etc.; the broadcast channels may include, but are not limited to, Physical Broadcast Channel (PBCH), etc.; and the reference signals may include, but are not limited to, Channel State Information Reference Signal (CSI-RS), Tracking Reference Signal (TRS), Phase Tracking Reference Signal (PTRS), Sounding Reference Signal (SRS), Positioning Reference Signal (PRS), etc.

[0046] In this embodiment, the first resource used for superimposing the DMRS and the first signal may include, but is not limited to, at least one of the following 11)-13).

[0047] 11) First time domain resources.

[0048] Optionally, the first time-domain resource may include, but is not limited to, at least one of the following a)-b).

[0049] a) At least one first time unit occupied by the first signal.

[0050] Wherein, at least one first time unit occupied by the first signal is indicated by the network or agreed by the protocol.

[0051] Optionally, the first time unit and the first time unit mentioned below may include, but are not limited to, at least one of a symbol, a symbol group, a time slot, a time slot group, a half frame, a frame, and a frame group.

[0052] b) At least one first time unit occupied by the DMRS.

[0053] The first time unit occupied by the DMRS is indicated by the network or agreed upon by the protocol.

[0054] For example, at least one first time unit occupied by the DMRS can be: at least one time unit among multiple time units occupied by the DMRS, such as at least one front-load symbol occupied by the DMRS, or at least one additional symbol occupied by the DMRS.

[0055] The term "preceding symbol" refers to the symbol placed at the beginning of the DMRS in the time domain, such as the first, second, or third OFDM symbol in a time slot, to provide channel estimation as early as possible, thereby supporting low-latency communication. The term "additional symbols" refers to DMRS symbols inserted at other positions in the time slot (non-preceding positions). These symbols are used to achieve channel estimation gain in the time domain, supporting high-mobility scenarios and providing more accurate channel estimation.

[0056] In this embodiment, the time-domain resources provided in a)-b) above can be understood as follows: when superimposing the DMRS and the first signal, it can be based on the first time unit occupied by the first signal or on the first time unit occupied by the DMRS, thereby improving the flexibility of the signal superposition process.

[0057] Furthermore, in this embodiment, if the first time-domain resource includes a portion of the first time unit occupied by the first signal, that is, the DMRS and the first signal are superimposed only on a portion of the time-domain resource occupied by the first signal, the interference between the first signal and the DMRS can be reduced. In other words, the first signal on the time-domain resource not superimposed with the DMRS will not be interfered with by the DMRS, thereby improving transmission performance or throughput while minimizing interference. Simultaneously, the requirements for the dimensionality of the AI / ML receiver's artificial intelligence (AI) and machine learning (ML) models required for signal reception at the receiving end are also smaller, which can improve the demodulation performance of the data portion.

[0058] Similarly, if the first time-domain resource includes a portion of the time-domain resource occupied by the DMRS, that is, the DMRS and the first signal are superimposed only on a portion of the time-domain resource occupied by the DMRS, the interference between the first signal and the DMRS can be reduced, that is, the first signal on the time-domain resource not superimposed with the DMRS will not be interfered with by the DMRS; at the same time, the requirement for the AI / ML model dimension of the AI / ML receiver required for the receiving end to receive the signal is also smaller.

[0059] Furthermore, for cases where only some time-domain resources are superimposed, it also improves the resource scheduling flexibility between "terminals that support AI / ML receivers that process DMRS and first signal superposition" and "terminals that do not support AI / ML receivers that process DMRS and first signal superposition".

[0060] Optionally, the AI / ML receiver described in this embodiment can be an integrated receiver that performs both implicit channel estimation and data recovery, or a modular receiver that performs explicit channel estimation and data recovery separately; no limitation is imposed here.

[0061] In addition, the AI / ML receiver can also be understood as: AI / ML model, AI / ML module, AI / ML algorithm, AI / ML architecture, etc., without limitation.

[0062] 12) First frequency domain resources.

[0063] Wherein, the first frequency domain resource may be at least a portion of the frequency domain resources for the transmission of the first signal as indicated by the network or agreed by the protocol, and / or at least a portion of the frequency domain resources for the transmission of the DMRS as indicated by the network or agreed by the protocol.

[0064] In this embodiment, if the first frequency domain resource includes at least a portion of the frequency domain resource occupied by the first signal, that is, the DMRS and the first signal are superimposed only on a portion of the frequency domain resource occupied by the first signal, the interference between the first signal and the DMRS can be reduced, that is, the first signal on the frequency domain resource not superimposed with the DMRS will not be interfered with by the DMRS; at the same time, the requirement for the AI / ML model dimension of the AI / ML receiver required for the receiving end to receive the signal is also smaller.

[0065] Similarly, if the first frequency domain resource includes at least a portion of the frequency domain resource occupied by the DMRS, that is, the DMRS and the first signal are superimposed only on a portion of the frequency domain resource occupied by the DMRS, interference between the first signal and the DMRS can be reduced, meaning the first signal will not be interfered with by the DMRS on the frequency domain resources not superimposed on it. At the same time, the requirements for the AI / ML model dimension of the AI / ML receiver when receiving signals at the receiving end are also smaller.

[0066] Furthermore, for cases where the signal is superimposed only on a portion of the frequency domain resources, it also facilitates resource scheduling flexibility between "terminals that support AI / ML receivers that process DMRS and first signal superposition" and "terminals that do not support AI / ML receivers that process DMRS and first signal superposition," such as enabling multi-user cooperative transmission.

[0067] Optionally, when superimposing the DMRS and the first signal, it can be implemented based on a certain frequency domain granularity or frequency domain range to improve the flexibility of signal superposition and signal scheduling. For example, in this embodiment, the first frequency domain resource may include, but is not limited to, any one of the following a)-e).

[0068] a) Frequency domain resources for non-cooperative transmission.

[0069] The non-cooperative transmission frequency domain resources refer to frequency domain resources that are not used for cooperative transmission. The cooperative transmission may include, but is not limited to, multi-user multiple-input multiple-output (MU-MIMO) scheduled transmission. For example, the first signal and the DMRS are superimposed and transmitted in a frequency domain range or bandwidth where MU-MIMO scheduling is not performed.

[0070] Furthermore, in this embodiment, the first signal and the DMRS are not superimposed on the frequency domain resources of the cooperative transmission (such as MU-MIMO), thereby ensuring the transmission performance of each terminal on the frequency domain resources of the cooperative transmission, while reducing mutual interference.

[0071] b) At least one first resource block (RB) or group of RBs.

[0072] For example, the first signal and the DMRS are superimposed on at least one first RB or RB group.

[0073] Optionally, the at least one first RB or RB group may be determined by protocol agreement or network instruction, without limitation.

[0074] c) At least one first precoding resource block group (PRG).

[0075] For example, the first signal and the DMRS are superimposed on a portion of the first PRG, but not on another portion of the first PRG.

[0076] Optionally, the at least one first PRG may be determined by protocol agreement or network instruction, without limitation.

[0077] d) First carrier or first cell.

[0078] For example, the first signal and the DMRS are superimposed on the first carrier or the first cell.

[0079] Optionally, the first carrier or the first cell may be determined by protocol agreement or network indication, and there is no restriction here.

[0080] e) at least one first code division multiplexing group (CDM) of the DMRS.

[0081] For example, the first signal is superimposed on the DMRS on a portion of the first CDM group, but not on another portion of the first CDM group.

[0082] Optionally, the first CDM group of at least one of the DMRS can be determined by protocol agreement or network instruction, without limitation.

[0083] 13) First airspace resources, the first airspace resources including a first port or a first layer or a first stream.

[0084] Optionally, the first spatial resource may include at least a portion of the first port, first layer, or first stream corresponding to the DMRS; or, the first spatial resource may include at least a portion of the first port, first layer, or first stream corresponding to the first signal. Whether the first port, first layer, or first stream corresponds to the DMRS or the first signal can be determined by protocol agreement or network indication.

[0085] Optionally, when the first signal is a data channel, the first spatial resource can be a first data stream; when the first signal is a control channel, the first spatial resource can be a first control stream; when the first signal is a reference signal, the first spatial resource can be understood as a first port, without any restrictions.

[0086] Based on the first resources provided in 11)-13) above, the superposition method of the first signal and the DMRS is described below for different first resources.

[0087] In some embodiments, assuming that the first resource includes the first time domain resource and the first time domain resource includes at least one first time unit occupied by the first signal, then the superposition method of the DMRS and the first signal superimposed on the first resource as described in S210 may include, but is not limited to, any one of the following methods 11-14.

[0088] Method 11: For at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal in the same first time unit. Therefore, the interference caused by the superposition of the DMRS and the first signal can be concentrated on a few first time units, meaning that only the portion of the first time units occupied by the first signal is subject to relatively severe interference.

[0089] In this context, "each DMRS port is superimposed with the first signal on the same first time unit" in Method 11 can be understood as: the DMRS signal on each DMRS port is superimposed with the first signal on the same first time unit.

[0090] Method 12: For at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS in the same first time unit. Thus, the interference caused by the superposition of the DMRS and the first signal can be concentrated on a few first time units, meaning that only the portion of the first time units occupied by the first signal is subject to relatively severe interference.

[0091] The first object includes any one of a port, layer, or stream. Based on this, mode 12 can also be understood as: for at least two streams, layers, or ports of the first signal, the first signal and the first time unit superimposed on the DMRS are the same on the at least two streams, layers, or ports.

[0092] Method 13: For at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed on the first signal at different first time units. This minimizes interference between the DMRS and the first signal, distributing the interference across different first time units.

[0093] In this context, “at least two DMRS ports are superimposed on the first signal at different first time units” in Method 13 can be understood as: DMRS signals on at least two DMRS ports are superimposed on the first signal at different first time units.

[0094] Method 14: For at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS at different first time units. This minimizes interference between the DMRS and the first signal by distributing the interference across different time units.

[0095] The first object includes any one of a port, layer, or stream. Based on this, mode 14 can also be understood as: for at least two streams, layers, or ports of the first signal, the first time unit superimposed on the DMRS is different on the at least two streams, layers, or ports.

[0096] In some embodiments, assuming that the first resource includes the first time domain resource and the first time domain resource includes at least one first time unit occupied by the DMRS, then, for the case where the DMRS and the first signal are superimposed on the first resource as described in S210 above, the DMRS and the first signal satisfy at least one of the following 21)-22).

[0097] 21) In the case that at least one additional symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS.

[0098] For example, assuming the first time unit is a symbol, when the first time domain resource includes at least one additional symbol occupied by the DMRS, the DMRS and the first signal can be superimposed on at least one additional symbol occupied by the DMRS. This can improve the signal estimation performance of the DMRS in the time domain to cope with communication scenarios such as high-speed communication. At the same time, the DMRS and the first signal are not superimposed on at least one preceding symbol of the DMRS, that is, there is no interference from the first signal on the at least one preceding symbol. Therefore, it is beneficial to improve the channel estimation performance based on the DMRS.

[0099] Optionally, for at least one preamble of the DMRS, the DMRS and the first signal can be multiplexed in the form of FDM or TDM.

[0100] 22) In the case that at least one preceding symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on at least one additional symbol occupied by the DMRS.

[0101] For example, assuming the first time unit is a symbol, then when the first time domain resource includes at least one symbol occupied by the DMRS, the DMRS and the first signal can be superimposed on at least one preceding symbol occupied by the DMRS, and the DMRS and the first signal are not superimposed on at least one additional symbol of the DMRS, that is, there is no interference from the first signal on the at least one additional symbol. Therefore, it is beneficial to improve the channel estimation performance based on the DMRS, or to improve the performance of interference measurement.

[0102] Optionally, for at least one additional symbol of the DMRS, the DMRS and the first signal can be multiplexed in the form of FDM or TDM.

[0103] In this embodiment, instead of superimposing the first signal on all symbols occupied by the DMRS, the superposition of the DMRS and the first signal is performed only on a portion of the symbols occupied by the DMRS in the aforementioned 21)-22). This can ensure the channel estimation performance or interference measurement performance based on the DMRS while maximizing spectral efficiency.

[0104] In some embodiments, where the first time-domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time-domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time-domain resource, thereby improving the flexibility of signal superposition and the flexibility of channel estimation or interference estimation based on DMRS. The first DMRS parameter may include, but is not limited to, at least one of the following: port; number of ports; frequency domain density; CDM group; transmission power; orthogonal cover code (OCC).

[0105] For example, taking the first DMRS parameter as the frequency domain density, the frequency domain density corresponding to the DMRS on the first time domain resource can be less than the frequency domain density corresponding to the DMRS on a non-first time domain resource; or, the frequency domain density corresponding to the DMRS on the first time domain resource can be greater than the frequency domain density corresponding to the DMRS on a non-first time domain resource. It is worth noting that if the frequency domain density corresponding to the DMRS on the first time domain resource is low, it helps to reduce interference between the DMRS and the first signal; of course, for the frequency domain density corresponding to the DMRS on a non-first time domain resource, it is sufficient as long as it is sufficient for channel interference estimation.

[0106] In some embodiments, assuming that the first resource includes the first frequency domain resource, then, in the case where the DMRS and the first signal are superimposed on the first resource as described in S210 above, the second DMRS parameter corresponding to the DMRS on the first frequency domain resource may be different from or the same as the second DMRS parameter corresponding to the DMRS on a non-first frequency domain resource, thereby improving the flexibility of DMRS resource allocation and scheduling.

[0107] Optionally, the second DMRS parameter may include, but is not limited to, at least one of the following 31)-39).

[0108] 31) The position of the symbol occupied.

[0109] 32) The number of symbols used.

[0110] 33) port.

[0111] 34) Number of ports.

[0112] 35) Frequency domain density.

[0113] 36) CDM group.

[0114] 37) Configuration type. Different configuration types can correspond to different DMRS patterns.

[0115] 38) Transmission power.

[0116] 39) OCC. For example, the FD-OCC length of the frequency domain orthogonal coverage code corresponding to the DMRS on the first frequency domain resource is 2, and the FD-OCC length of the DMRS corresponding to the non-first frequency domain resource is 4.

[0117] In some embodiments, assuming that the first resource includes the first spatial resource, such as the first stream, the first port, or the first layer, then the way in which the DMRS and the first signal are superimposed on the first resource as described in S210 may include, but is not limited to, at least one of the following methods 21-22.

[0118] Method 21: The DMRS and the first signal are superimposed on the first spatial resources (such as a portion of the stream, a portion of the layer, or a portion of the port) corresponding to the DMRS.

[0119] Method 22: The DMRS and the first signal are superimposed on a portion of the first spatial resources (such as a portion of a stream, a portion of a layer, or a portion of a port) corresponding to the first signal.

[0120] In this embodiment, by implementing the aforementioned methods 21-22, signals can be superimposed from different spatial resource dimensions (such as a portion of the first spatial resource corresponding to DMRS or a portion of the first spatial resource corresponding to the first signal), thereby improving the flexibility of signal superposition.

[0121] Furthermore, by superimposing on a portion of the first spatial domain resources, on the one hand, interference between DMRS and the first signal can be effectively reduced, that is, the first signal on the frequency domain resources not superimposed with DMRS will not be affected by DMRS, and the AI / ML model dimension requirement for the AI / ML receiver required for signal reception at the receiving end is also smaller; on the other hand, it can also facilitate the multiplexing between "terminals that support AI / ML receivers that process the superposition of DMRS and the first signal" and "terminals that do not support AI / ML receivers that process the superposition of DMRS and the first signal".

[0122] In some embodiments, for the first signal mentioned in the foregoing embodiments, the first signal may satisfy, but is not limited to, at least one of the following 41)-46).

[0123] 41) The value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a resource other than the first resource. The first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme (MCS) level. That is, in this embodiment, by using an independent first scheduling parameter on the first signal on the first resource, such as using a smaller modulation order, code rate, or MCS level, not only can the transmission of the first signal on the first resource and a resource other than the first resource be decoupled, improving transmission performance (such as transmission efficiency), but it can also effectively combat the effects of DMRS interference.

[0124] In this embodiment, the non-first resource mentioned in the context, relative to the first resource, can be understood as: among the resources corresponding to the first signal (such as time-frequency resources), the resources that have not undergone superposition of the first signal and the DMRS.

[0125] 42) The first signal is mapped on the first resource with higher priority than the first signal is mapped on a non-first resource. That is, the first signal is mapped on the first resource first, and then the first signal is mapped on a non-first resource, thereby decoupling the transmission of the first signal on the first resource and the non-first resource and improving the transmission performance (such as transmission efficiency).

[0126] The mapping information mentioned in 42) can be understood as the mapping rule of the constellation points corresponding to the first signal. Of course, in some cases, the priority of the first signal mapped on the first resource may be lower than the priority of the first signal mapped on a non-first resource, which is not limited here.

[0127] 43) The first signal corresponds to a second object that is different on the first resource and on a non-first resource, wherein the second object includes at least one of the following: Transport Block (TB), Codeword (CW), Code Block Group (CBG), Physical Channel, Physical Channel Symbol Count, Service Type, Hybrid Automatic Repeat reQuest Process (HARQ) process, and DMRS Symbol Count.

[0128] The physical channel may be, but is not limited to, PDSCH, PUSCH, PDCCH, PUCCH, etc.

[0129] The physical channel symbol count can be understood as the number of OFDM symbols allocated to the physical channel in a single time unit (such as a time slot).

[0130] The service types mentioned may include, but are not limited to, Enhanced Mobile Broadband (eMBB) services, Ultra-Reliable Low-Latency Communications (URLLC) services, and Massive Machine-Type Communications (mMTC) services.

[0131] For example, the first signal corresponds to TB1 on the first resource and TB2 on a non-first resource; or, the first signal corresponds to codeword A on the first resource and codeword B on a non-first resource, ...

[0132] In this embodiment, by setting the first signal to correspond to different second objects on the first resource and on non-first resources, the transmission of the first signal on the first resource and on non-first resources can be decoupled, thereby improving transmission performance (such as transmission efficiency).

[0133] 44) The first signal corresponds to or is associated with a different third object on the first resource and on a different resource, wherein the third object includes a Channel Quality Indicator (CQI) measurement. That is, it is necessary to decouple the CQI measurement corresponding to the first signal on the first resource from that on a different resource to improve the accuracy of the CQI. Based on this, when reporting CQI, two sets of CQI parameters or one set of CQI parameters can be reported. In the case of reporting one set of CQI parameters, the set of CQI parameters can be the smaller of the two sets of CQI parameters, or the average of the two, etc., without limitation.

[0134] Optionally, the CQI measurement may include, but is not limited to, one or more of the following: CQI measurement assumptions, CQI measurement values, and CQI values.

[0135] 45) The first signal has a different fourth object on the first resource and on a different resource, wherein the fourth object includes the ratio of the energy per resource element (EPRE) of the first signal to the EPRE of the first reference signal. Therefore, by configuring a different fourth object on the first resource and on a different resource, optimization of power allocation and interference management can be achieved.

[0136] Optionally, the first reference signal may include, but is not limited to, CSI-RS, etc.

[0137] In some embodiments, when calculating CQI, considering the difference in transmission power between the first signal on the first resource and the first signal not on the first resource, the ratio X used when comparing the EPRE of the first signal to the EPRE of the first reference signal can be determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal. For example, the ratio X can be expressed according to any one of the following equations (1)-(2): X = (P1 + P2) / P3 (1) X = P1 / P3 (2)

[0138] In equations (1) and (2) above, P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

[0139] Optionally, the power ratio of the first signal to the DMRS can be agreed upon by the protocol or configured by the network, so that the ratio X of the EPRE of the first signal to the EPRE of the first reference signal (such as CSI-RS) can be determined regardless of whether the aforementioned formula (1) or formula (2) is used.

[0140] 46) The first signal differs from the fifth object corresponding to the first resource and the non-first resource, wherein the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS. The transmission power of the first signal and the transmission power of the DMRS can be implemented by protocol agreement or network configuration, etc., and are not limited herein.

[0141] In some embodiments, for the DMRS described in the foregoing embodiments, the DMRS may satisfy, but is not limited to, at least one of the following 51)-53). The port multiplexing method of the DMRS may include at least one of CDM, TDM, and FDM.

[0142] 51) In the case of repetition transmission of the DMRS, the repetition transmission spans at least one first time unit.

[0143] 52) When the first signal is repeatedly transmitted within a second time unit or between at least two second time units, the DMRS is superimposed on the first signal based on TD-OCC; wherein, the second time unit includes any one of a symbol group, a time slot, and a time slot group.

[0144] For example, assuming the second time unit is a time slot, then when the first signal (such as PDSCH) is repeatedly transmitted within a time slot (inter-slot) or between time slots (intra-slot), the DMRS and the first signal can be superimposed or multiplexed via TD-OCC. Here, the DMRS and the first signal each correspond to a different TD-OCC sequence.

[0145] 53) The uses of the DMRS also include at least one of sensing, positioning, and CSI measurement. That is to say, in addition to channel estimation, the DMRS mentioned in this embodiment can also be used for one or more of sensing, positioning, and CSI measurement.

[0146] For example, assuming the first time unit is a symbol, the first signal and DMRS are completely superimposed on the first resource, that is, the DMRS occupies all the symbols occupied by the first signal, making the overall resources of the DMRS sufficiently rich or abundant. Therefore, in addition to channel estimation, the DMRS can also be used for at least one of the sensing, positioning, and CSI measurement, thereby eliminating the need to design reference signals specifically for other purposes such as sensing, positioning, and CSI measurement, and improving resource utilization.

[0147] In some embodiments, where the purpose of the DMRS further includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS. Here, the at least a portion of the time-frequency resources can also be understood as a DMRS pattern for a specific purpose, thereby providing different time-frequency resource requirements for different purposes and improving transmission performance for each purpose.

[0148] In this embodiment, the at least part of the time-frequency resources can satisfy at least one of the following a)-b).

[0149] a) At least a portion of the time-frequency resources are agreed upon by the protocol or indicated by the network, that is, the DMRS pattern corresponding to different uses is agreed upon by the protocol or indicated by the network.

[0150] It is understandable that, assuming the communication device is a terminal, then for a terminal, in addition to the DMRS pattern corresponding to different uses as agreed by the protocol or indicated by the network, the terminal can also determine the required DMRS resources based on its own implementation, without any restrictions here.

[0151] b) The transmission power corresponding to at least a portion of the time-frequency resources is agreed upon by the protocol or indicated by the network, that is, the transmission power used on the DMRS pattern corresponding to different purposes can be agreed upon by the protocol or indicated by the network.

[0152] Optionally, the time-frequency resources occupied by the DMRS for each application, or the transmission power corresponding to the at least part of the time-frequency resources, may be the same or different; they may be configured jointly or individually, without limitation. In particular, the different transmission powers corresponding to the at least part of the time-frequency resources occupied by the DMRS for each application, or their individual configurations, can effectively improve measurement performance.

[0153] 54) The DMRS has no quasi-co-location (QCL) reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on a second reference signal. The second reference signal may include, but is not limited to, one or more of the following: Synchronization Signal / PBCH block (SSB), CSI-RS, TRS, etc. It should be noted that in some cases, the QCL reference of the DMRS includes, but is not limited to, timing and / or frequency offset measured based on the second reference signal; for example, it may also include at least one of delay spread and Doppler spread.

[0154] In this embodiment, the case where the DMRS has no QCL reference can be understood as follows: since the AI / ML receiver has already trained the parameters, it is not necessary to refer to the QCL reference provided by the second reference signal, such as timing, delay spread, frequency offset, Doppler spread, etc.

[0155] The QCL reference for the DMRS includes timing and / or frequency offset measured based on the second reference signal, which can be understood as follows: due to the action of the AI / ML receiver, the channel estimation of the DMRS does not require reference delay spread and Doppler spread parameters.

[0156] In some embodiments, when the communication device is a network-side device, the method embodiment 200 may further include: the communication device receiving first capability information from a terminal; or, when the communication device is a terminal, the method embodiment 200 may further include: the communication device sending the first capability information to the network-side device.

[0157] The first capability information may include, but is not limited to, at least one of the following.

[0158] 61) Whether the terminal supports the superposition of the DMRS and the first signal on the first resource.

[0159] 62) Information on the first resources supported by the terminal. For example, the terminal supports overlaying on which first time-domain resources and / or which first frequency-domain resources and / or which first spatial-domain resources.

[0160] 63) Information about the DMRS supported by the terminal. For example, which DMRS(s) the terminal supports can be superimposed with the first signal.

[0161] In this embodiment, by receiving first capability information from the terminal through the network-side device, or by having the terminal report first capability information to the network-side device, the network-side device can clearly understand the capabilities of the terminal, and then configure relevant information in signal transmission according to the capabilities of the terminal, thereby ensuring the reliability of the signal transmission.

[0162] Based on the description of the signal transmission scheme in the aforementioned method embodiment 200, for ease of understanding, the implementation process will be further illustrated below with examples.

[0163] Example 1

[0164] Assuming the first signal is PDSCH and the first time unit is a symbol, then PDSCH and DMRS can be superimposed on some time-domain resources to reduce interference between DMRS and PDSCH. That is, PDSCH will not be interfered with by DMRS on frequency-domain resources that are not superimposed with DMRS. In addition, the AI / ML model dimension required by the AI / ML receiver for the receiver to receive the signal is also smaller.

[0165] Furthermore, by superimposing DMRS and PDSCH on some frequency domain resources, it also improves the resource scheduling flexibility between "terminals that support AI / ML receivers that process DMRS and PDSCH superposition" and "terminals that do not support AI / ML receivers that process DMRS and PDSCH superposition".

[0166] Based on this, the scenario where PDSCH and DMRS are superimposed on some time-domain resources can be described as follows.

[0167] Scenario 1: Assume that at least two DMRS ports are superimposed on the PDSCH data stream on the same time-domain resources (e.g., at least one symbol occupied by PDSCH). As shown in Figure 3a, assuming the PDSCH data stream is two-stream, corresponding to two DMRS ports, such as DMRS port #1 and DMRS port #2, and the PDSCH occupies 12 symbols from symbol #3 to symbol #14, then, referring again to Figure 3a, the filled portion of Pattern 1 represents DMRS, occupying three symbols: symbol #3, symbol #7, and symbol #11. In this case, DMRS ports #1 and #2 are superimposed on the same symbols (i.e., symbol #3, symbol #7, and symbol #11) as the PDSCH. Therefore, interference can be concentrated on a few symbols, meaning only some PDSCH symbols are severely interfered with.

[0168] Scenario 2: Assume that at least two DMRS ports corresponding to PDSCH data streams are superimposed on different time-domain resources (such as at least one symbol occupied by PDSCH), as shown in Figure 3b. Assume there are two PDSCH data streams, corresponding to two DMRS ports #1 and #2, and PDSCH occupies 12 symbols from symbol #3 to symbol #14. Then, the filled portion of Pattern 1 represents DMRS port #1 corresponding to PDSCH data stream #1, occupying symbols #3, #7, and #11. The filled portion of Pattern 3 represents DMRS port #2 corresponding to PDSCH data stream #2, occupying symbols #4, #8, and #12. In this case, it can be seen that the two DMRS ports are superimposed on different symbols with PDSCH, thereby minimizing interference between the DMRS and each PDSCH data stream, distributing the interference across different symbols.

[0169] It is understandable that scenarios 1 and 2 described above explain the superposition process from the perspective of the symbols occupied by the PDSCH. Therefore, from the perspective of the time units (e.g., symbols) occupied by the DMRS, the superposition of the DMRS and PDSCH can also be performed only on a portion of the DMRS symbols, thus improving DMRS channel estimation. For example, as shown in Figure 3c, the PDSCH occupies only from symbol #4 to symbol #14; the DMRS symbols in the filling portion of pattern 4 (e.g., the preceding symbols) occupy symbol #3 and are not superimposed with the PDSCH; the DMRS symbols in the filling portion of pattern 1 (e.g., the extra symbols) occupy symbols #4 to #12 and are superimposed with the PDSCH, which is beneficial for handling communication scenarios such as high-speed communication. In this case, since there is no interference from the PDSCH on the DMRS symbol of symbol #3, it is beneficial for improving channel estimation performance.

[0170] Of course, as shown in Figure 3d, the DMRS superimposed on the PDSCH can also be more diluted, for example, superimposed only on symbols #7 and #11, thereby reducing the interference between the DMRS and the PDSCH, while still being sufficient to handle certain high-speed scenarios, which will not be elaborated further.

[0171] Furthermore, the designs in Figures 3c and 3d have another advantage: the symbols corresponding to the filled portion of Pattern 4 can be used for interference estimation. For example, for MU-MIMO, the channel H corresponding to the DMRS of the target terminal can be estimated based on the preceding symbols corresponding to the filled portion of Pattern 4. Then, based on the channel H and the DMRS, the DMRS interference of other terminals can be inferred. By combining the power ratio of the first signal to the DMRS, the DMRS interference and other stream interference experienced by each data stream of the first signal can be roughly calculated.

[0172] Optionally, the DMRS frequency domain density on the corresponding symbols of the filled portion of Pattern 4 can be different from that on the corresponding symbols of the filled portion of Pattern 1. For example, the DMRS frequency domain density on the symbols of the filled portion of Pattern 1 is lower, thereby further reducing the interference between DMRS and PDSCH; or, alternatively, the DMRS frequency domain density on the symbols of the filled portion of Pattern 4 can be lower, sufficient for estimating the interference.

[0173] Example 2

[0174] Assuming the first signal is PDSCH, and the first signal and DMRS are superimposed on a portion of the frequency domain resources, then, similar to superimposing on a portion of the time domain resources in Example 2, superimposing a DMRS and PDSCH on a portion of the frequency domain resources is also to reduce the interference between DMRS and PDSCH. That is, PDSCH will not be interfered with by DMRS on the frequency domain resources that are not superimposed with DMRS. In addition, the requirement for the AI / ML model dimension of the AI / ML receiver required by the receiver to receive the signal is also smaller.

[0175] Furthermore, by superimposing DMRS and PDSCH on some frequency domain resources, it also improves the resource scheduling flexibility between "terminals that support AI / ML receivers that process DMRS and PDSCH superposition" and "terminals that do not support AI / ML receivers that process DMRS and PDSCH superposition".

[0176] Based on this, for the case where DMRS and PDSCH are superimposed on some frequency domain resources, assuming there are frequency domain resources used for MU-MIMO cooperative transmission and frequency domain resources not used for MU-MIMO cooperative transmission, then, based on the aforementioned frequency domain resources used for MU-MIMO cooperative transmission and frequency domain resources not used for MU-MIMO cooperative transmission, resource scheduling can be achieved between "terminals that support AI / ML receivers that process DMRS and PDSCH superposition" and "terminals that do not support AI / ML receivers that do not process DMRS and PDSCH superposition".

[0177] Assuming that DMRS and PDSCH are superimposed only on non-cooperative transmission frequency domain resources (i.e., bandwidth without MU-MIMO), as shown in Figure 4a, on cooperative transmission frequency domain resources (as shown in (a) of Figure 4a), PDSCH occupies 12 symbols from symbol #3 to symbol #14. The filled part of pattern 4 represents the symbols occupied by DMRS, namely symbols #3, #7, and #11. DMRS and PDSCH are not superimposed.

[0178] In the non-cooperative transmission frequency domain resources (as shown in (b) of Figure 4a), PDSCH occupies 12 symbols from symbol #3 to symbol #14. The filled part of pattern 1 represents the symbols occupied by DMRS, namely symbols #3, #7, and #14. DMRS and PDSCH are superimposed. This ensures that the transmission performance of each terminal can be guaranteed in the cooperative transmission frequency domain resources, reducing mutual interference.

[0179] Of course, the symbols occupied by DMRS can differ between frequency domain resources used in cooperative transmission and those used in non-cooperative transmission. For example, as shown in Figure 4b, in the frequency domain resources used in cooperative transmission (as shown in Figure 4b(a)), PDSCH occupies 12 symbols from symbol #3 to symbol #14. The filled part of pattern 1 represents the symbols occupied by DMRS, namely symbols #3, #7, and #1. DMRS and PDSCH are not superimposed. In the frequency domain resources used in non-cooperative transmission (as shown in Figure 4b(b)), both PDSCH and DMRS occupy 12 symbols from symbol #3 to symbol #14. That is, DMRS and PDSCH are superimposed on symbols #3 to #14. Thus, the transmission throughput of PDSCH on the frequency domain resources used in non-cooperative transmission can be significantly improved.

[0180] Example 3

[0181] Assuming the first signal is a PDSCH, and the PDSCH and DMRS are superimposed on a portion of the stream or a portion of the port, then, similar to the superposition on a portion of the frequency domain resources described in Example 2, superimposing a DMRS and PDSCH only on a portion of the stream or a portion of the port resources is also to reduce interference between the DMRS and PDSCH. That is, the PDSCH on the frequency domain resources not superimposed with the DMRS will not be interfered with by the DMRS. In addition, the AI / ML model dimension requirement for the AI / ML receiver required for signal reception at the receiving end is also smaller. Furthermore, it facilitates the multiplexing between "terminals that support AI / ML receivers that process DMRS and PDSCH superposition" and "terminals that do not support AI / ML receivers that process DMRS and PDSCH superposition".

[0182] Based on this, for the case where DMRS and PDSCH are superimposed on some streams (or some ports), assume there are two terminals that can perform MU-MIMO cooperative transmission. Each terminal transmits one PDSCH data stream, and the two PDSCH data streams correspond to two DMRS ports, such as DMRS port #1 and DMRS port #2. DMRS port #1 and DMRS port #2 occupy different frequency domain resources (e.g., corresponding to different CDM groups), that is, the DMRS ports are multiplexed in the form of FDM.

[0183] As shown in Figure 5, at DMRS port #1 corresponding to the filled portion of pattern 1, DMRS port #1 is superimposed with PDSCH, while at DMRS port #2 corresponding to the filled portion of pattern 4, DMRS port #2 is not superimposed with PDSCH. This enables MU-MIMO multiplexing between "terminals that support AI / ML receivers that process DMRS and PDSCH superposition" and "terminals that do not support AI / ML receivers that do not process DMRS and PDSCH superposition". Furthermore, this scheme can also be understood as rate matching of PDSCH.

[0184] Example 4

[0185] Assuming the first signal is PDSCH, this Example 4 provides some examples of CQI measurements for cases where DMRS and PDSCH are superimposed only on partial resources (such as partial time-domain resources, partial frequency-domain resources, partial streams, and partial ports). For example, in Figure 6, it is assumed that PDSCH occupies symbols #3 to #14; the filled portion of pattern 1 is DMRS, occupying symbols #3, #7, and #11, and this DMRS is superimposed on PDSCH.

[0186] Based on this, since the PDSCH on the first resource (such as symbol #3, symbol #7, symbol #11) is affected by DMRS, while the PDSCH on non-first resources (such as symbol #4, symbol #5, symbol #6, etc.) is not affected by DMRS, their corresponding signal-to-interference-plus-noise ratio (SINR) performance is different, which affects CQI measurement, MCS level determination, etc. related to SINR.

[0187] For example, the PDSCH of the first resource can use a smaller MCS level to combat the effects of DMRS interference. At the same time, the PDSCH of the first resource can use independent TB, CW, CBG, PDSCH, etc., which can effectively decouple the transmission of the PDSCH of the first resource and the PDSCH of non-first resources, thereby improving transmission performance, such as transmission efficiency.

[0188] Furthermore, for CQI measurement, the terminal can calculate different CQI values ​​for the PDSCH of the first resource and the PDSCH of non-first resources to improve the accuracy of the CQI calculation results. When calculating CQI, since the transmission power of the PDSCH of the first resource and the PDSCH of non-first resources is different, the EPRE ratio X of the PDSCH and CSI-RS (i.e., the first reference signal) can be defined in two ways, as expressed by any one of the following equations (3)-(4): X=(P1+P2) / P3 (1) X=P1 / P3 (2)

[0189] In equations (3) and (4) above, P1 represents the power of the PDSCH, P2 represents the power of the DMRS, and P3 represents the power of the CSI-RS.

[0190] For both scenarios mentioned above, regardless of the definition method, assuming the power ratio between PDSCH and DMRS can be determined, the EPRE ratio of the actual PDSCH to CSI-RS can be calculated, thus enabling correct CQI calculation.

[0191] Example 5

[0192] This example illustrates how DMRS can also be used for other purposes such as sensing, localization, and CSI measurement. Assuming the first signal is PDSCH, and taking the complete superposition of PDSCH and DMRS as an example, since DMRS occupies all the symbols of PDSCH, the overall resources of DMRS are sufficient for other purposes (such as sensing, localization, and CSI measurement) on this DMRS pattern, eliminating the need to design separate reference signals for these purposes. For example, as shown in Figure 7, the filled portions of pattern 1 and pattern 5 are both DMRS, completely overlapping with PDSCH. Assume that the REs filled in pattern 5 form a specific pattern that can be used for functions such as localization or sensing.

[0193] For a single terminal, if the DMRS pattern of the filled portion of Pattern 5 is not specifically defined, the terminal can arbitrarily utilize all DMRS resources based on its own implementation; however, it may not necessarily obtain sufficient measurement performance. Therefore, the network-side device can indicate specific RE resources (i.e., the purpose of each DMRS corresponds to or is associated with the time-frequency resources occupied by the DMRS) to the terminal, and indicate that different transmission powers can be used on the pattern formed by these specific RE resources, thereby improving measurement performance. Even if the DMRS of the filled portion of Pattern 5 does not overlap with the PDSCH (i.e., the transmission power of the PDSCH is 0), the interference caused by the PDSCH should be minimized to ensure measurement performance on the REs of the filled portion of Pattern 5.

[0194] The signal transmission method provided in this application can be executed by a signal transmission device. This application uses an example of a signal transmission device executing the signal transmission method to illustrate the signal transmission device provided in this application.

[0195] This application provides a signal transmission device. As an example, the signal transmission device may be a communication device or a component within a communication device, such as a chip. The communication device may be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal may include, but is not limited to, the type of terminal 11 listed above, and the network-side device may include, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0196] The signal transmission device includes a transmission module (such as a receiving module and a transmitting module) and a processing module. The receiving module, transmitting module, and processing module can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include general-purpose processors, special-purpose processors, etc., such as a Central Processing Unit (CPU), microprocessor, Digital Signal Processor (DSP), Artificial Intelligence (AI) processor, Graphics Processing Unit (GPU), Application Specific Integrated Circuit (ASIC), Network Processor (NP), Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving module and transmitting module can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, bus, radio frequency unit, etc.

[0197] Specifically, referring to 8, when the signal transmission device is a communication device or a component in a communication device, the signal transmission device 800 includes a transmission module 810 for transmitting or receiving a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first signal on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0198] In some embodiments, the signal transmission device 800 further includes a processing module 820 as shown in FIG8, which is used to superimpose the DMRS to be transmitted and the first signal, or to parse the received DMRS and the first signal.

[0199] In some embodiments, the first time-domain resource includes at least one of the following: at least one first time unit occupied by the first signal; at least one first time unit occupied by the DMRS.

[0200] In some embodiments, where the first time-domain resource includes at least one first time unit occupied by the first signal, the superposition of the DMRS and the first signal on the first resource includes any of the following: for at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal in the same first time unit; for at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS in the same first time unit; for at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed on the first signal in different first time units; for at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS in different first time units; wherein, the first object includes any one of a port, a layer, or a stream.

[0201] In some embodiments, when the first time-domain resource includes at least one first time unit occupied by the DMRS, the DMRS and the first signal satisfy at least one of the following: when the at least one first time unit includes at least one additional symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS; when the at least one first time unit includes at least one preceding symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one additional symbol occupied by the DMRS.

[0202] In some embodiments, when the first time-domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time-domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time-domain resource; wherein, the first DMRS parameter includes at least one of the following: port; number of ports; frequency domain density; CDM group; transmission power; orthogonal coverage code (OCC).

[0203] In some embodiments, the first frequency domain resource includes any one of the following: frequency domain resources for non-cooperative transmission; at least one first resource block (RB) or RB group; at least one first precoded resource block group (PRG); a first carrier or a first cell; at least one first code division multiplexing (CDM) group of the DMRS.

[0204] In some embodiments, the DMRS parameters corresponding to the DMRS on the first frequency domain resource are different from the DMRS parameters corresponding to the DMRS on resources other than the first frequency domain resource.

[0205] In some embodiments, the second DMRS parameter includes at least one of the following: symbol location; number of symbols; port; number of ports; frequency domain density; CDM group; configuration type; transmission power; OCC.

[0206] In some embodiments, where the first resource includes the first spatial resource, the superposition of the DMRS and the first signal on the first resource includes at least one of the following: the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the DMRS; the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the first signal.

[0207] In some embodiments, the first signal satisfies at least one of the following: the value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a non-first resource, wherein the first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme (MCS) level; the priority of the first signal mapped on the first resource is higher than the priority of the first signal mapped on a non-first resource; the first signal corresponds to a different second object on the first resource and a different object on a different resource, wherein the second object includes at least one of transport block (TB), codeword (CW), code block group (CBG), physical channel, number of physical channel symbols, service type, and hybrid automatic repeat request (HARQ) process; the first signal corresponds to or is associated with a different third object on the first resource and a different object on a different resource, wherein the third object includes channel quality indicator (CQI) measurement; the first signal corresponds to a different fourth object on the first resource and a different object on a different resource, wherein the fourth object includes the ratio of the energy per resource element (EPRE) of the first signal to the EPRE of the first reference signal; the first signal corresponds to a different fifth object on the first resource and a different object on a different resource, wherein the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS.

[0208] In some embodiments, the ratio X of the EPRE of the first signal to the EPRE of the first reference signal is determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal.

[0209] In some embodiments, the ratio X is represented according to any of the following: X = (P1 + P2) / P3; X = P1 / P3; where P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

[0210] In some embodiments, the DMRS satisfies at least one of the following: when the DMRS performs repeated transmissions, the repeated transmissions span at least one first time unit; when the first signal is repeatedly transmitted within one second time unit or between at least two second time units, the DMRS and the first signal are superimposed based on the Time Domain Orthogonal Covering Code (TD-OCC); wherein the second time unit includes any one of a symbol group, a time slot, and a time slot group; the purpose of the DMRS further includes at least one of sensing, positioning, and Channel State Information (CSI) measurement; the DMRS has no quasi-co-located QCL reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on a second reference signal.

[0211] In some embodiments, where the purpose of the DMRS further includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS; wherein the at least a portion of the time-frequency resources satisfies at least one of the following: the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network; and the transmission power corresponding to the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network.

[0212] In some embodiments, the transmission module 810 is further configured to: receive first capability information from the terminal; send the first capability information to the network-side device; wherein the first capability information includes at least one of the following: whether the terminal supports the superposition of the DMRS and the first signal on the first resource; information about the first resource supported by the terminal; and information about the DMRS supported by the terminal.

[0213] In some embodiments, the first signal includes at least one of a data channel, a control channel, a broadcast channel, and a reference signal.

[0214] In some embodiments, the first time unit includes at least one of a symbol, a symbol group, a time slot, a time slot group, a half-frame, a frame, and a frame group.

[0215] The signal transmission device 800 provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG2 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0216] As shown in Figure 9, this application embodiment also provides a communication device 900, including a processor 901 and a memory 902. The memory 902 stores programs or instructions that can run on the processor 901. For example, when the communication device 900 is a terminal, the program or instructions executed by the processor 901 implement the various steps of the above-described signal transmission method embodiment and achieve the same technical effect. When the communication device 900 is a network-side device, the program or instructions executed by the processor 901 implement the various steps of the above-described signal transmission method embodiment and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0217] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG2. This terminal embodiment corresponds to the above-described communication device-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the signal transmission device shown in FIG8. Specifically, FIG10 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0218] The terminal 1000 includes, but is not limited to, at least some of the following components: radio frequency unit 1001, network module 1002, audio output unit 1003, input unit 1004, sensor 1005, display unit 1006, user input unit 1007, interface unit 1008, memory 1009, and processor 1010.

[0219] Those skilled in the art will understand that the terminal 1000 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 1010 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 10 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0220] It should be understood that, in this embodiment, the input unit 1004 may include a graphics processor 10041 and a microphone 10042. The graphics processor 10041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 1006 may include a display panel 10061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0221] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 1001 can transmit it to the processor 1010 for processing; in addition, the radio frequency unit 1001 can send uplink data to the network-side device. Typically, the radio frequency unit 1001 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0222] The memory 1009 can be used to store software programs or instructions, as well as various data. The memory 1009 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 1009 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1009 in this embodiment includes, but is not limited to, these and any other suitable types of memory.

[0223] The processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into the processor 1010.

[0224] The radio frequency unit 1001 is used to transmit or receive a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first signal on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0225] In some embodiments, the first time-domain resource includes at least one of the following: at least one first time unit occupied by the first signal; at least one first time unit occupied by the DMRS.

[0226] In some embodiments, where the first time-domain resource includes at least one first time unit occupied by the first signal, the superposition of the DMRS and the first signal on the first resource includes any of the following: for at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal in the same first time unit; for at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS in the same first time unit; for at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed on the first signal in different first time units; for at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS in different first time units; wherein, the first object includes any one of a port, a layer, or a stream.

[0227] In some embodiments, when the first time-domain resource includes at least one first time unit occupied by the DMRS, the DMRS and the first signal satisfy at least one of the following: when the at least one first time unit includes at least one additional symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS; when the at least one first time unit includes at least one preceding symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one additional symbol occupied by the DMRS.

[0228] In some embodiments, when the first time domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time domain resource; wherein, the first DMRS parameter includes at least one of the following: port; number of ports; frequency domain density; CDM group; transmission power; orthogonal coverage (OCC).

[0229] In some embodiments, the first frequency domain resource includes any one of the following: frequency domain resources for non-cooperative transmission; at least one first resource block (RB) or RB group; at least one first precoded resource block group (PRG); a first carrier or a first cell; at least one first code division multiplexing (CDM) group of the DMRS.

[0230] In some embodiments, the second DMRS parameter corresponding to the DMRS on the first frequency domain resource is different from the second DMRS parameter corresponding to the DMRS on a non-first frequency domain resource.

[0231] In some embodiments, the second DMRS parameter includes at least one of the following: symbol location; number of symbols; port; number of ports; frequency domain density; CDM group; configuration type; transmission power; OCC.

[0232] In some embodiments, where the first resource includes the first spatial resource, the superposition of the DMRS and the first signal on the first resource includes at least one of the following: the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the DMRS; the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the first signal.

[0233] In some embodiments, the first signal satisfies at least one of the following: the value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a non-first resource, wherein the first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme (MCS) level; the priority of the first signal mapped on the first resource is higher than the priority of the first signal mapped on a non-first resource; the first signal corresponds to a different second object on the first resource and a different object on a different resource, wherein the second object includes at least one of transport block (TB), codeword (CW), code block group (CBG), physical channel, number of physical channel symbols, service type, and hybrid automatic repeat request (HARQ) process; the first signal corresponds to or is associated with a different third object on the first resource and a different object on a different resource, wherein the third object includes channel quality indicator (CQI) measurement; the first signal corresponds to a different fourth object on the first resource and a different object on a different resource, wherein the fourth object includes the ratio of the energy per resource element (EPRE) of the first signal to the EPRE of the first reference signal; the first signal corresponds to a different fifth object on the first resource and a different object on a different resource, wherein the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS.

[0234] In some embodiments, the ratio X of the EPRE of the first signal to the EPRE of the first reference signal is determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal.

[0235] In some embodiments, the ratio X is represented according to any of the following: X = (P1 + P2) / P3; X = P1 / P3; where P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

[0236] In some embodiments, the DMRS satisfies at least one of the following: when the DMRS performs repeated transmissions, the repeated transmissions span at least one first time unit; when the first signal is repeatedly transmitted within one second time unit or between at least two second time units, the DMRS and the first signal are superimposed based on the Time Domain Orthogonal Covering Code (TD-OCC); wherein the second time unit includes any one of a symbol group, a time slot, and a time slot group; the purpose of the DMRS further includes at least one of sensing, positioning, and Channel State Information (CSI) measurement; the DMRS has no quasi-co-located QCL reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on a second reference signal.

[0237] In some embodiments, where the purpose of the DMRS further includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS; wherein the at least a portion of the time-frequency resources satisfies at least one of the following: the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network; and the transmission power corresponding to the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network.

[0238] In some embodiments, the radio frequency unit 1001 is further configured to: receive first capability information from the terminal; send the first capability information to the network-side device; wherein the first capability information includes at least one of the following: whether the terminal supports the superposition of the DMRS and the first signal on the first resource; information about the first resource supported by the terminal; and information about the DMRS supported by the terminal.

[0239] In some embodiments, the first signal includes at least one of a data channel, a control channel, a broadcast channel, and a reference signal.

[0240] In some embodiments, the first time unit includes at least one of a symbol, a symbol group, a time slot, a time slot group, a half-frame, a frame, and a frame group.

[0241] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 200 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0242] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG2. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0243] Specifically, this application embodiment also provides a network-side device, which may be the signal transmission device 800 shown in FIG8. As shown in FIG11, the network-side device 1100 includes: an antenna 1101, a radio frequency device 1102, a baseband device 1103, a processor 1104, and a memory 1105. The antenna 1101 is connected to the radio frequency device 1102. In the uplink direction, the radio frequency device 1102 receives information through the antenna 1101 and sends the received information to the baseband device 1103 for processing. In the downlink direction, the baseband device 1103 processes the information to be transmitted and sends it to the radio frequency device 1102. The radio frequency device 1102 processes the received information and transmits it through the antenna 1101.

[0244] The method executed by the network-side device 1100 in the above embodiments can be implemented in the baseband device 1103, which includes a baseband processor.

[0245] The baseband device 1103 may include at least one baseband board, on which multiple chips are disposed, as shown in FIG11. One of the chips is, for example, a baseband processor, which is connected to the memory 1105 via a bus interface to call the program or instructions in the memory 1105 to execute the network-side device operation shown in the above method embodiment.

[0246] The network-side device 1100 may also include a network interface 1106, such as a Common Public Radio Interface (CPRI).

[0247] The radio frequency device 1102 is used to transmit or receive a demodulation reference signal DMRS; wherein the DMRS is superimposed on a first signal on a first resource, the first resource including at least one of the following: a first time domain resource; a first frequency domain resource; a first spatial domain resource, the first spatial domain resource including a first port or a first layer or a first stream.

[0248] In some embodiments, the first time-domain resource includes at least one of the following: at least one first time unit occupied by the first signal; at least one first time unit occupied by the DMRS.

[0249] In some embodiments, where the first time-domain resource includes at least one first time unit occupied by the first signal, the superposition of the DMRS and the first signal on the first resource includes any of the following: for at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal in the same first time unit; for at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS in the same first time unit; for at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed on the first signal in different first time units; for at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS in different first time units; wherein, the first object includes any one of a port, a layer, or a stream.

[0250] In some embodiments, when the first time-domain resource includes at least one first time unit occupied by the DMRS, the DMRS and the first signal satisfy at least one of the following: when the at least one first time unit includes at least one additional symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS; when the at least one first time unit includes at least one preceding symbol occupied by the DMRS, the DMRS and the first signal are not superimposed on at least one additional symbol occupied by the DMRS.

[0251] In some embodiments, when the first time domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time domain resource; wherein, the first DMRS parameter includes at least one of the following: port; number of ports; frequency domain density; CDM group; transmission power; orthogonal coverage (OCC).

[0252] In some embodiments, the first frequency domain resource includes any one of the following: frequency domain resources for non-cooperative transmission; at least one first resource block (RB) or RB group; at least one first precoded resource block group (PRG); a first carrier or a first cell; at least one first code division multiplexing (CDM) group of the DMRS.

[0253] In some embodiments, the second DMRS parameter corresponding to the DMRS on the first frequency domain resource is different from the second DMRS parameter corresponding to the DMRS on a non-first frequency domain resource.

[0254] In some embodiments, the second DMRS parameter includes at least one of the following: symbol location; number of symbols; port; number of ports; frequency domain density; CDM group; configuration type; transmission power; OCC.

[0255] In some embodiments, where the first resource includes the first spatial resource, the superposition of the DMRS and the first signal on the first resource includes at least one of the following: the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the DMRS; the DMRS and the first signal are superimposed on the portion of the first spatial resource corresponding to the first signal.

[0256] In some embodiments, the first signal satisfies at least one of the following: the value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a non-first resource, wherein the first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme (MCS) level; the priority of the first signal mapped on the first resource is higher than the priority of the first signal mapped on a non-first resource; the first signal corresponds to a different second object on the first resource and a different object on a different resource, wherein the second object includes at least one of transport block (TB), codeword (CW), code block group (CBG), physical channel, number of physical channel symbols, service type, and hybrid automatic repeat request (HARQ) process; the first signal corresponds to or is associated with a different third object on the first resource and a different object on a different resource, wherein the third object includes channel quality indicator (CQI) measurement; the first signal corresponds to a different fourth object on the first resource and a different object on a different resource, wherein the fourth object includes the ratio of the energy per resource element (EPRE) of the first signal to the EPRE of the first reference signal; the first signal corresponds to a different fifth object on the first resource and a different object on a different resource, wherein the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS.

[0257] In some embodiments, the ratio X of the EPRE of the first signal to the EPRE of the first reference signal is determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal.

[0258] In some embodiments, the ratio X is represented according to any of the following: X = (P1 + P2) / P3; X = P1 / P3; where P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

[0259] In some embodiments, the DMRS satisfies at least one of the following: when the DMRS performs repeated transmissions, the repeated transmissions span at least one first time unit; when the first signal is repeatedly transmitted within one second time unit or between at least two second time units, the DMRS and the first signal are superimposed based on the Time Domain Orthogonal Covering Code (TD-OCC); wherein the second time unit includes any one of a symbol group, a time slot, and a time slot group; the purpose of the DMRS further includes at least one of sensing, positioning, and Channel State Information (CSI) measurement; the DMRS has no quasi-co-located QCL reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on a second reference signal.

[0260] In some embodiments, where the purpose of the DMRS further includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS; wherein the at least a portion of the time-frequency resources satisfies at least one of the following: the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network; and the transmission power corresponding to the at least a portion of the time-frequency resources is agreed upon by a protocol or indicated by a network.

[0261] In some embodiments, the radio frequency device 1102 is further configured to: receive first capability information from a terminal; send the first capability information to a network-side device; wherein the first capability information includes at least one of the following: whether the terminal supports the superposition of the DMRS and the first signal on the first resource; information about the first resource supported by the terminal; and information about the DMRS supported by the terminal.

[0262] In some embodiments, the first signal includes at least one of a data channel, a control channel, a broadcast channel, and a reference signal.

[0263] In some embodiments, the first time unit includes at least one of a symbol, a symbol group, a time slot, a time slot group, a half-frame, a frame, and a frame group.

[0264] In addition, the network-side device 1100 of this application embodiment also includes: a program or instructions stored in the memory 1105 and executable on the processor 1104. The processor 1104 calls the program or instructions in the memory 1105 to execute the methods executed by each module shown in FIG8 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0265] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described signal transmission method embodiments and achieve the same technical effects. To avoid repetition, they will not be described again here.

[0266] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0267] This application also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described signal transmission method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0268] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0269] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described signal transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0270] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to implement the various processes of the above-described signal transmission method embodiments, and / or the network-side device can be used to implement the various processes of the above-described signal transmission method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0271] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0272] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0273] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A signal transmission method, comprising: Communication equipment transmits or receives demodulation reference signal (DMRS); Wherein, the DMRS is superimposed on the first signal on a first resource, and the first resource includes at least one of the following: First-time domain resources; First frequency domain resources; The first airspace resource includes a first port, a first layer, or a first stream.

2. The method as described in claim 1, wherein, The first time-domain resource includes at least one of the following: The first signal occupies at least one first time unit; The DMRS occupies at least one first time unit.

3. The method as described in claim 2, wherein, When the first time-domain resource includes at least one first time unit occupied by the first signal, the DMRS superimposed on the first resource includes any of the following: For at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal on the same first time unit; For at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS on the same first time unit; For at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed with the first signal at different first time units; For at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS at different first time units; The first object includes any one of a port, a layer, or a stream.

4. The method of claim 2, wherein, When the first time-domain resource includes at least one first time unit occupied by the DMRS, the DMRS and the first signal satisfy at least one of the following: In the case where at least one additional symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS; In the case where at least one preceding symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on the at least one additional symbol occupied by the DMRS.

5. The method of claim 2, wherein, When the first time domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time domain resource. The first DMRS parameter includes at least one of the following: port; Number of ports; Frequency domain density; CDM group; Transmission power; Orthogonal Covering Code (OCC).

6. The method of claim 1, wherein, The first frequency domain resource includes any one of the following: Frequency domain resources for non-cooperative transmission; At least one first resource block (RB) or RB group; At least one first precoded resource block group (PRG); First carrier or first cell; At least one first code division multiplexing (CDM) group of the DMRS.

7. The method according to any one of claims 1-6, wherein, The second DMRS parameter corresponding to the DMRS on the first frequency domain resource is different from the second DMRS parameter corresponding to the DMRS on a non-first frequency domain resource.

8. The method of claim 7, wherein, The second DMRS parameter includes at least one of the following: Symbol position; Number of symbols; port; Number of ports; Frequency domain density; CDM group; Configuration type; Transmission power; OCC.

9. The method of claim 6, wherein, When the first resource includes the first airspace resource, the superposition of the DMRS and the first signal on the first resource includes at least one of the following: The DMRS and the first signal are superimposed on the portion of the first airspace resource corresponding to the DMRS; The DMRS and the first signal are superimposed on the first spatial resources corresponding to the first signal.

10. The method according to any one of claims 1-9, wherein, The first signal satisfies at least one of the following: The value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a resource other than the first resource. The first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme MCS level. The first signal has a higher priority when mapped to the first resource than when mapped to a resource other than the first resource. The first signal corresponds to a different second object on the first resource and on a non-first resource, wherein the second object includes at least one of the following: transport block TB, codeword CW, code block group CBG, physical channel, number of physical channel symbols, service type, and hybrid automatic repeat request (HARQ) process. The first signal corresponds to or is associated with a different third object on the first resource and on a non-first resource, the third object including a channel quality indicator (CQI) measurement; The first signal is different on the first resource and the fourth object corresponding to a non-first resource. The fourth object includes the ratio of the energy EPRE of each resource element of the first signal to the EPRE of the first reference signal. The first signal is different from the fifth object corresponding to the first resource and the non-first resource, and the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS.

11. The method of claim 10, wherein, The ratio X of the EPRE of the first signal to the EPRE of the first reference signal is determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal.

12. The method of claim 11, wherein, The ratio X is represented according to any of the following: X = (P1 + P2) / P3; X = P1 / P3; Wherein, P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

13. The method according to any one of claims 1-12, wherein, The DMRS satisfies at least one of the following: In the case of repeated transmissions by the DMRS, the repeated transmissions span at least one first time unit; When the first signal is repeatedly transmitted within one second time unit or between at least two second time units, the DMRS is superimposed on the first signal based on the time-domain orthogonal coverage code TD-OCC; wherein, the second time unit includes any one of a symbol group, a time slot, and a time slot group; The uses of the DMRS also include at least one of sensing, positioning, and channel state information (CSI) measurement; The DMRS has no quasi-co-located QCL reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on the second reference signal.

14. The method of claim 13, wherein, When the purpose of the DMRS also includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS. Wherein, the at least portion of the time-frequency resources satisfy at least one of the following: At least a portion of the time-frequency resources are agreed upon by the protocol or indicated by the network; The transmission power corresponding to at least a portion of the time-frequency resources is determined by the protocol or indicated by the network.

15. The method according to any one of claims 1-14, wherein, The method further includes any one of the following: When the communication device is a network-side device, the communication device receives first capability information from the terminal; When the communication device is a terminal, the communication device sends first capability information to the network-side device; The first capability information includes at least one of the following: Does the terminal support the superposition of the DMRS and the first signal on the first resource? Information about the first resource supported by the terminal; The terminal supports the DMRS information.

16. The method according to any one of claims 1-15, wherein, The first signal includes at least one of a data channel, a control channel, a broadcast channel, and a reference signal.

17. A signal transmission device, comprising: The transmission module is used to send or receive the demodulation reference signal DMRS; Wherein, the DMRS is superimposed on the first signal on a first resource, and the first resource includes at least one of the following: First-time domain resources; First frequency domain resources; The first airspace resource includes a first port, a first layer, or a first stream.

18. The apparatus of claim 17, wherein, The first time-domain resource includes at least one of the following: The first signal occupies at least one first time unit; The DMRS occupies at least one first time unit.

19. The apparatus of claim 18, wherein, When the first time-domain resource includes at least one first time unit occupied by the first signal, the DMRS superimposed on the first resource includes any of the following: For at least two DMRS ports of the DMRS, each of the at least two DMRS ports is superimposed on the first signal on the same first time unit; For at least two first objects of the first signal, each of the at least two first objects is superimposed on the DMRS on the same first time unit; For at least two DMRS ports of the DMRS, the at least two DMRS ports are superimposed with the first signal at different first time units; For at least two first objects of the first signal, the at least two first objects are superimposed on the DMRS at different first time units; The first object includes any one of a port, a layer, or a data stream.

20. The apparatus of claim 18, wherein, When the first time-domain resource includes at least one first time unit occupied by the DMRS, the DMRS and the first signal satisfy at least one of the following: In the case where at least one additional symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on at least one preceding symbol occupied by the DMRS; In the case where at least one preceding symbol occupied by the DMRS is included in the at least one first time unit, the DMRS and the first signal are not superimposed on the at least one additional symbol occupied by the DMRS.

21. The apparatus of claim 18, wherein, When the first time domain resource includes at least one first time unit occupied by the DMRS, the first DMRS parameter corresponding to the DMRS on the first time domain resource is different from the first DMRS parameter corresponding to the DMRS on a non-first time domain resource. The first DMRS parameter includes at least one of the following: port; Number of ports; Frequency domain density; CDM group; Transmission power; OCC.

22. The apparatus of claim 17, wherein, The first frequency domain resource includes any one of the following: Frequency domain resources for non-cooperative transmission; At least one first resource block (RB) or RB group; At least one first precoded resource block group (PRG); First carrier or first cell; At least one first code division multiplexing (CDM) group of the DMRS.

23. The apparatus as claimed in any one of claims 17-22, wherein, The second DMRS parameter corresponding to the DMRS on the first frequency domain resource is different from the second DMRS parameter corresponding to the DMRS on a non-first frequency domain resource.

24. The apparatus of claim 23, wherein, The second DMRS parameter includes at least one of the following: The position of the symbol occupied; The number of symbols used; port; Number of ports; Frequency domain density; CDM group; Configuration type; Transmission power; OCC.

25. The apparatus of claim 22, wherein, When the first resource includes the first airspace resource, the superposition of the DMRS and the first signal on the first resource includes at least one of the following: The DMRS and the first signal are superimposed on the portion of the first airspace resource corresponding to the DMRS; The DMRS and the first signal are superimposed on the first spatial resources corresponding to the first signal.

26. The apparatus according to any one of claims 17-25, wherein, The first signal satisfies at least one of the following: The value of the first scheduling parameter corresponding to the first signal on the first resource is less than the value of the first scheduling parameter corresponding to the first signal on a resource other than the first resource. The first scheduling parameter includes at least one of modulation order, code rate, and modulation and coding scheme MCS level. The first signal has a higher priority when mapped to the first resource than when mapped to a resource other than the first resource. The first signal corresponds to a different second object on the first resource and on a non-first resource, wherein the second object includes at least one of the following: transport block TB, codeword CW, code block group CBG, physical channel, number of physical channel symbols, service type, and hybrid automatic repeat request (HARQ) process. The first signal corresponds to or is associated with a different third object on the first resource and on a non-first resource, the third object including a channel quality indicator (CQI) measurement; The first signal is different on the first resource and the fourth object corresponding to a non-first resource. The fourth object includes the ratio of the energy EPRE of each resource element of the first signal to the EPRE of the first reference signal. The first signal is different from the fifth object corresponding to the first resource and the non-first resource, and the fifth object includes at least one of the transmission power of the first signal and the transmission power of the DMRS.

27. The apparatus of claim 26, wherein, The ratio X of the EPRE of the first signal to the EPRE of the first reference signal is determined based on at least two of the power of the first signal, the power of the DMRS, and the power of the first reference signal.

28. The apparatus of claim 27, wherein, The ratio X is represented according to any of the following: X = (P1 + P2) / P3; X = P1 / P3; Wherein, P1 represents the power of the first signal, P2 represents the power of the DMRS, and P3 represents the power of the first reference signal.

29. The apparatus as claimed in any one of claims 17-28, wherein, The DMRS satisfies at least one of the following: In the case of repeated transmissions by the DMRS, the repeated transmissions span at least one first time unit; When the first signal is repeatedly transmitted within one second time unit or between at least two second time units, the DMRS is superimposed on the first signal based on the time-domain orthogonal coverage code TD-OCC; wherein, the second time unit includes any one of a symbol group, a time slot, and a time slot group; The uses of the DMRS also include at least one of sensing, positioning, and channel state information (CSI) measurement; The DMRS has no quasi-co-located QCL reference, or the QCL reference of the DMRS includes timing and / or frequency offset measured based on the second reference signal.

30. The apparatus of claim 29, wherein, When the purpose of the DMRS also includes at least one of sensing, positioning, and CSI measurement, the purpose of each DMRS corresponds to or is associated with at least a portion of the time-frequency resources occupied by the DMRS. Wherein, the at least portion of the time-frequency resources satisfy at least one of the following: At least a portion of the time-frequency resources are agreed upon by the protocol or indicated by the network; The transmission power corresponding to at least a portion of the time-frequency resources is determined by the protocol or indicated by the network.

31. The apparatus according to any one of claims 17-30, wherein, The transmission module is also used for any of the following: Receive first capability information from the terminal; Send first capability information to network-side devices; The first capability information includes at least one of the following: Does the terminal support the superposition of the DMRS and the first signal on the first resource? Information about the first resource supported by the terminal; The terminal supports the DMRS information.

32. The apparatus according to any one of claims 17-31, wherein, The first signal includes at least one of a data channel, a control channel, a broadcast channel, and a reference signal.

33. A communication device comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as claimed in any one of claims 1 to 16.

34. A readable storage medium on which a program or instructions are stored, wherein the program or instructions, when executed by a processor, implement the steps of the method as claimed in any one of claims 1 to 16.

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