Method, device and apparatus for determining dmrs information

Abstract

The application discloses a DMRS information determination method, device and apparatus, and belongs to the communication field. The DMRS information determination method comprises the following steps: a terminal sends or receives DMRS of at least one first channel; wherein the information of the DMRS is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the information of the DMRS; first signaling, wherein the first signaling is used to indicate the information of the DMRS; and a first signal, wherein the first signal is used for the terminal to report the information of the DMRS.

Description

Technical Field

[0001] This application belongs to the field of communication technology, and specifically relates to a method, device and apparatus for determining DMRS information. Background Technology

[0002] As communication technologies evolve, future communication systems will need to support more diverse terminals and more layered and demanding services. For example, communication systems may need to support heavier system messages, heavier random access procedure-related messages, heavier paging messages, or heavier Small Data Transmission (SDT) messages. Therefore, the corresponding DMRS needs to be enhanced for the transmission of these messages to improve transmission flexibility and reliability. Summary of the Invention

[0003] This application provides a method, device, and apparatus for determining DMRS information, which can determine more flexible DMRS for more diverse terminals or services.

[0004] Firstly, a method for determining DMRS information is provided, including:

[0005] The terminal transmits or receives at least one DMRS on a first channel;

[0006] The information in the DMRS is determined based on at least one of the following:

[0007] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0008] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0009] A first signal, wherein the first signal is used by the terminal to report the information of the DMRS.

[0010] Secondly, a method for determining DMRS information is provided, including:

[0011] The network-side device transmits or receives at least one DMRS on the first channel;

[0012] The information in the DMRS is determined based on at least one of the following:

[0013] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0014] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0015] The first signal is used by the terminal to report information from the DMRS.

[0016] Thirdly, a device for determining DMRS information is provided, comprising: a first transmitting module and a first receiving module;

[0017] The first transmitting module is used to transmit at least one DMRS of a first channel, or the first receiving module is used to receive at least one DMRS of a first channel;

[0018] The information in the DMRS is determined based on at least one of the following:

[0019] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0020] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0021] A first signal, wherein the first signal is used by the DMRS information determining device to report the DMRS information.

[0022] Fourthly, a device for determining DMRS information is provided, comprising: a second transmitting module and a second receiving module;

[0023] The second transmitting module is used to transmit at least one DMRS of the first channel, or the second receiving module is used to receive at least one DMRS of the first channel;

[0024] The information in the DMRS is determined based on at least one of the following:

[0025] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0026] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0027] The first signal is used by the terminal to report information from the DMRS.

[0028] Fifthly, an apparatus for determining DMRS information is provided, the apparatus being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0029] In a sixth aspect, a terminal is provided, the terminal 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.

[0030] Seventhly, a terminal is provided, including a processor and a communication interface;

[0031] The communication interface is used to send or receive at least one DMRS of a first channel;

[0032] The information in the DMRS is determined based on at least one of the following:

[0033] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0034] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0035] A first signal, wherein the first signal is used by the terminal to report the information of the DMRS.

[0036] Eighthly, a network-side device is provided, the network-side 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 second aspect.

[0037] Ninthly, a network-side device is provided, including a processor and a communication interface;

[0038] The communication interface is used to send or receive at least one DMRS of a first channel;

[0039] The information in the DMRS is determined based on at least one of the following:

[0040] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0041] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0042] The first signal is used by the terminal to report information from the DMRS.

[0043] In a tenth 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, or implement the steps of the method described in the second aspect.

[0044] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0045] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0046] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the method for determining DMRS information as described in the first aspect, or to implement the steps of the method for determining DMRS information as described in the second aspect.

[0047] In the embodiments of this application, a terminal transmits or receives at least one DMRS for a first channel; wherein the information of the DMRS is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the information of the DMRS; a first signaling, wherein the first signaling is used to indicate the information of the DMRS; and a first signal, wherein the first signal is used by the terminal to report the information of the DMRS. This allows for the determination of a suitable DMRS for the first channel, and the performance of channel estimation and demodulation of the first channel based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of a communication system architecture provided in an embodiment of this application.

[0049] Figure 2 This is one of the schematic flowcharts of a method for determining DMRS information according to an embodiment of this application.

[0050] Figure 3 This is one of the schematic diagrams of the DMRS pattern provided according to the embodiments of this application.

[0051] Figure 4 This is a second schematic diagram of the DMRS pattern provided according to the embodiments of this application.

[0052] Figure 5 This is a second illustrative flowchart of a method for determining DMRS information according to an embodiment of this application.

[0053] Figure 6 This is one of the schematic block diagrams of a device for determining DMRS information according to embodiments of this application.

[0054] Figure 7 This is a second schematic block diagram of a device for determining DMRS information according to an embodiment of this application.

[0055] Figure 8This is a schematic block diagram of a communication device provided according to an embodiment of this application.

[0056] Figure 9 This is a schematic diagram of the hardware structure of a terminal according to an embodiment of this application.

[0057] Figure 10 This is a schematic block diagram of a network-side device provided according to an embodiment of this application. Detailed Implementation

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments 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 devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, 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. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein 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.

[0063] 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 (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.

[0064] 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).

[0065] To better understand the technical solution of this application, the DMRS related to this application is explained below.

[0066] In NR systems, the demodulation reference signal (DMRS) for the data channels (Physical Downlink Shared Channel (PDSCH) and Physical Uplink Shared Channel (PUSCH)) is primarily used for data channel demodulation. For different application scenarios, the DMRS can be divided into DMRS configuration type 1 and DMRS configuration type 2. DMRS configuration type 1 supports a maximum of 4 ports for a single-symbol structure and a maximum of 8 ports for a double-symbol structure; DMRS configuration type 2 supports a maximum of 6 ports for a single-symbol structure and a maximum of 12 ports for a double-symbol structure. Furthermore, DMRS configuration type 1 supports 2 code division multiplexing (CDM) groups, while DMRS configuration type 2 supports 3 CDM groups. Ports within the same CDM group are multiplexed using a Frequency Division Orthogonal Cover Code (FD-OCC) and a Time Division Orthogonal Cover Code (TD-OCC) with a length of 2.

[0067] In addition, DMRS in NR supports the configuration of additional symbols, meaning that a DMRS port can occupy multiple symbols to achieve channel estimation gain in the time domain, such as for high-speed mobile scenarios. Depending on the number of data channel scheduling symbols, DMRS supports a maximum of 3 additional symbols, occupying a total of 4 symbols. Furthermore, the number of additional symbols supported also varies depending on whether DMRS is a single-symbol or double-symbol structure.

[0068] To support more DMRS orthogonal ports, NR has enhanced DMRS, such as doubling the number of DMRS ports and using FD-OCC sequences of length 4 to multiplex DMRS ports within the same CDM group. That is, for DMRS configuration type 1, a single-symbol structure will support a maximum of 8 ports, and a dual-symbol structure will support a maximum of 16 ports; for DMRS configuration type 2, a single-symbol structure will support a maximum of 12 ports, and a dual-symbol structure will support a maximum of 24 ports.

[0069] In addition, the number of PUSCH data streams supported per terminal has been expanded from a maximum of 4 streams to a maximum of 8 streams. In other words, the DMRS corresponding to the PUSCH transmitted by each terminal also requires a maximum of 8 ports for multiplexing.

[0070] To better understand the technical solution of this application, the default DMRS related to this application is explained below.

[0071] For common channels that are scheduled using fallback downlink control information (DCI), the NR protocol specifies some default DMRS configurations.

[0072] For PDSCH, when scheduled via DCI format 1_0, or when Radio Resource Control (RRC) does not configure any of the higher-level parameters such as DMRS Additional Position, masLength, and DMRS Type, the terminal must assume that the PDSCH will not appear on symbols where DMRS exists (unless it is a 2-symbol PDSCH scheduled in the form of Time Domain Resource Assignment (TDRA) mapping type B). For DMRS with a single preamble symbol, port 1000 is configured with DMRS configuration type 1. The remaining orthogonal DMRS ports are not associated with PDSCH transmitted to other terminals. In addition, the following must also be satisfied:

[0073] For PDSCH of TDRA mapping type A and TDRA mapping type B, the terminal needs to assume dmrs-AdditionalPosition = pos2, and the maximum number of additional symbols per symbol is 2;

[0074] For a PDSCH occupying 2 symbols scheduled in the form of TDRA mapping type B, the terminal needs to assume that the PDSCH appears on a symbol where DMRS exists.

[0075] For PUSCH, if it is not scheduled using DCI format 0_1 ​​or DCI format 0_2 scrambled with Cell RNTI (C-RNTI), Configured Scheduling Radio Network Temporary Identity (CS-RNTI), Semi-Persistent Channel State Information Radio Network Temporary Identity (SP-CSI-RNTI), or Modulation and Coding Scheme Cell Radio Network Temporary Identity (MCS-C-RNTI), and it does not correspond to a configured grant, nor does it correspond to a Type-2 random access procedure (i.e., two-step random access), then the terminal needs to assume that the configuration type of port 0 using a single preamble symbol is DMRS type 1, and that the remaining resource elements on the DMRS symbol are... Element (RE) is not used for PUSCH transmission (unless it is a PUSCH with 2 or fewer symbols and transmission precoding is not enabled), while additional DMRS symbols can be determined according to the protocol.

[0076] When frequency hopping is not enabled, the terminal needs to assume dmrs-AdditionalPosition = pos2, and the maximum number of additional symbols is 2;

[0077] When frequency hopping is enabled, the terminal needs to assume that dmrs-AdditionalPosition = pos1, and the maximum number of additional symbols is 1.

[0078] When the PUSCH is scheduled in DCI format 0_0 based on CS-RNTI scrambling, the terminal needs to use DMRS port 0 with a single preamble symbol. The configuration type of DMRS is determined by the DMRS type (dmrs-Type) in DMRS-UplinkConfig. The remaining REs on the DMRS symbol are not used for PUSCH transmission (unless it is a PUSCH with 2 or fewer symbols and transmission precoding is not enabled). Additional symbols can be configured by dmrs-AdditionalPosition in ConfiguredGrantConfig.

[0079] To better understand the technical solution of this application, the following describes the Small Data Transmission (SDT) related to this application.

[0080] The characteristic of efficient small data transmission (SDT) is that for non-connected terminals (such as idle terminals and inactive terminals), it avoids the excessive signaling overhead caused by RRC state transitions and RRC connection establishment processes, and completes the purpose of small data transmission through a very simple signaling process.

[0081] The key feature of Small Data Transmission (SDT) is that the UE's current Data Radio Bearer (DRB) is in a suspended state, rather than a released state. Therefore, before sending a Resume Request message, the UE can restore the DRB and then piggyback the small data using RRC signaling. In this state, it can transmit data on the DRB, just like a connected UE. This avoids state transitions and achieves efficient small data transmission with minimal signaling overhead.

[0082] Small data transmission (SDT) uses DRB transmission, and Access Stratum (AS) security is already activated. Therefore, SDT can provide necessary security protection for data, such as data encryption and integrity protection. From a security perspective, since the UE may have moved to another base station while in the suspended state, the security key used by the UE to retransmit packets needs to be updated. The update method is to perform a key update operation based on the parameters provided by the network side when the UE entered the suspended state for calculating the next-hop key.

[0083] Small Data Transmission (SDT) data is carried on a dedicated traffic channel (DTCH) and transmitted after being multiplexed with an uplink RRC connection resumption request (RRCConnectionResumeRequest) message. Similarly, if there is a reply downlink message, it can also be carried on the DTCH and transmitted after being multiplexed with a downlink RRC connection release (RRCConnectionRelease) message. Both uplink and downlink data are encrypted using the updated next key.

[0084] Small data can be transmitted on Message 3 (Msg3) PUSCH during the random access procedure in a 4-step RACH process. Small data can also be transmitted on Message A (MsgA) PUSCH during the random access procedure in a 2-step RACH process, or on PUSCH resources scheduled by a configured grant (CG) configured in an RRC deactivated state. Small data transmission during 2-step RACH and 4-step RACH processes is referred to as RACH-based small data transmission, while small data transmission via PUSCH scheduled by CG is referred to as CG-based small data transmission.

[0085] To better understand the technical solution of this application, the paging related to this application is explained below.

[0086] Paging messages are carried by the Paging Control Channel (PCCH), and the data blocks of the PCCH are carried by the Paging Channel (PCH), which in turn are carried by the PDSCH. Since the PDSCH is a downlink shared physical channel, it can carry not only the PCH but also the Downlink Shared Channel (DL-SCH). Therefore, before receiving a paging message (on the PDSCH), the terminal needs to listen to the Physical Downlink Control Channel (PDCCH) and then determine whether the network has sent a paging message to it in the current paging cycle based on whether the PDCCH carries a Paging Radio Network Temporary Identifier (P-RNTI).

[0087] To better understand the technical solution of this application, the problems solved by this application are explained below.

[0088] Future communication systems, such as 6G systems, will need to support more diverse terminals and more layers and demands of services. For example, communication systems may need to support heavier system messages, heavier random access procedure messages, heavier paging messages, or heavier SDT transmission messages.

[0089] In this application embodiment, in order to further improve the transmission performance of the physical channel, especially the transmission performance of the physical channel in the non-connected state, such as the idle state or the inactive state, a more flexible DMRS and a more flexible DMRS determination method are introduced.

[0090] The method for determining DMRS information provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0091] Figure 2 This is a schematic flowchart of a method 200 for determining DMRS information according to an embodiment of this application, as shown below. Figure 2 As shown, the method 200 for determining DMRS information may include at least some of the following:

[0092] S210, the terminal sends or receives at least one DMRS from the first channel;

[0093] The information in the DMRS is determined based on at least one of the following:

[0094] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0095] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0096] A first signal, wherein the first signal is used by the terminal to report the information of the DMRS.

[0097] It should be understood that Figure 2 The steps or operations of method 200 for determining DMRS information are illustrated, but these steps or operations are merely examples, and other operations may be performed in this application. Figure 2 Variations of various operations within it.

[0098] In this embodiment, a terminal transmits or receives at least one DMRS for a first channel; wherein the DMRS information is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the DMRS information; a first signaling, wherein the first signaling is used to indicate the DMRS information; and a first signal, wherein the first signal is used by the terminal to report the DMRS information. This allows for the determination of a more suitable DMRS for the first channel, and the performance of channel estimation and demodulation based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[0099] It should be noted that the DMRS information determines the DMRS pattern (also known as the DMRS mode) corresponding to the first channel, i.e., the time-frequency resources occupied by the DMRS. The DMRS pattern, in turn, determines the performance of the DMRS channel estimation, thus affecting the reliability of the first channel transmission. For SIB1, random access related messages (at least one of Msg 1, Msg 2, Msg 3, Msg 4, Msg 5, Msg A, and Msg B), paging messages, DCI-scheduled data channels that schedule paging messages, and data channels directly scheduled by paging messages, the appropriate use of the DMRS pattern is particularly important.

[0100] In this embodiment, the first parameter is associated with DMRS information, so that the terminal can determine the DMRS information by default based on the first parameter.

[0101] In some embodiments, the information in the DMRS includes, but is not limited to, at least one of the following:

[0102] Number of DMRS ports;

[0103] DMRS port;

[0104] DMRS symbol count;

[0105] DMRS symbol;

[0106] DMRS prefix symbol count;

[0107] DMRS prefix symbol position;

[0108] DMRS extra symbol count;

[0109] Additional symbol positions for DMRS;

[0110] CDM group;

[0111] The number of CDM groups without data reuse;

[0112] Orthogonal Cover Code (OCC) Index;

[0113] OOC sequence;

[0114] OCC length;

[0115] DMRS time-domain density;

[0116] DMRS frequency domain density;

[0117] DMRS configuration type;

[0118] DMRS sequence information.

[0119] In some embodiments, the first channel includes, but is not limited to, at least one of the following:

[0120] PDSCH carrying system messages;

[0121] PDSCH carrying paging messages;

[0122] PDSCH carrying paging short messages;

[0123] PDSCH in a disconnected state;

[0124] PUSCH in a disconnected state;

[0125] The channels corresponding to relevant messages during the random access process;

[0126] Broadcast channel carrying system messages;

[0127] A multicast channel carrying multicast messages;

[0128] Common downlink control channel;

[0129] Common uplink channel;

[0130] Physical Random Access Channel (PRACH);

[0131] The channel corresponding to the signal used to trigger the SSB to send;

[0132] The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

[0133] The non-connected state described in the embodiments of this application may include at least one of the following:

[0134] Idle state, inactive state.

[0135] It should be noted that the first channel can also be a physical channel transmitted in RRC connection state, such as PUSCH or PDSCH.

[0136] Optionally, the PDSCH carrying system messages can be a PDSCH carrying SIB1 or other SIB messages.

[0137] Optionally, the PUSCH in the disconnected state can be a dynamically scheduled PUSCH in the disconnected state, or the PUSCH in the disconnected state can be a CG PUSCH in the disconnected state.

[0138] Optionally, the channel corresponding to the relevant messages in the random access process may include, but is not limited to, at least one of the following:

[0139] Message 2 (Msg2) of the random access procedure;

[0140] Message 3 (Msg3) of the random access procedure;

[0141] Message 4 (Msg4) of the random access procedure;

[0142] Message 5 (Msg5) of the random access procedure;

[0143] Message A (Message A, MsgA) of the random access procedure;

[0144] Message B (MsgB) of the random access procedure.

[0145] It should be noted that Msg5 can be the terminal's feedback message in response to Msg4.

[0146] Optionally, the broadcast channel carrying system messages can be a Physical Broadcast Channel (PBCH).

[0147] Optionally, the common downlink control channel can be a PDCCH channel of common DCI.

[0148] Optionally, the common uplink channel can be an uplink wake-up signal (WUS) channel.

[0149] Optionally, the PRACH can be a PRACH carrying data or payload.

[0150] The SSB described in the embodiments of this application can also be called any signal set or signal module that includes at least one of the following: synchronization signal, broadcast signal, broadcast channel (PBCH), other system message downlink broadcast channel and its control channel, or control resource set, or control channel search space.

[0151] In some embodiments, the first parameter includes, but is not limited to, at least one of the following:

[0152] The data stream corresponding to the first channel;

[0153] The transmission block (TB) corresponding to the first channel;

[0154] The channel type corresponding to the first channel;

[0155] The scheduling type corresponding to the first channel;

[0156] The modulation and coding scheme (MCS) corresponding to the first channel;

[0157] The transmission timing corresponding to the first channel;

[0158] The time-domain resources corresponding to the first channel;

[0159] Frequency domain resources corresponding to the first channel;

[0160] The first reference signal or the first reference channel group associated with the first channel;

[0161] Information related to the Synchronization Signal Block (SSB) associated with the first channel;

[0162] The Radio Network Temporary Identity (RNTI) corresponding to the first channel;

[0163] The PRACH resources corresponding to the first channel;

[0164] The search space corresponding to the first channel;

[0165] The quasi-co-located (QCL) relationship associated with the first channel.

[0166] In some implementations, the first parameter includes the data stream corresponding to the first channel. The DMRS information associated with the data stream corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the data stream corresponding to the first channel. Specifically, for example, different predefined DMRS information can be used when the data streams corresponding to the first channel are different.

[0167] For example, when the number of data streams corresponding to the first channel is 1, the default convention is to associate the data streams corresponding to the first channel with DMRS pattern #1; when the number of data streams corresponding to the first channel is 2, the default convention is to associate the data streams corresponding to the first channel with DMRS pattern #2.

[0168] For example, when the number of data streams corresponding to the first channel is 1, it is by default agreed that the data stream corresponding to the first channel is associated with a DMRS with an FD-OCC length of mode #1 (e.g., FD-OCC length of 1); when the number of data streams is 2, it is by default agreed that the data stream corresponding to the first channel is associated with a DMRS with an FD-OCC length of mode #2 (e.g., FD-OCC length of 2). When performing channel estimation, the terminal or network side can adjust the channel estimation algorithm accordingly to improve the channel estimation performance.

[0169] In some implementations, if the first channel corresponds to at least two data streams, the information of the DMRS associated with each data stream corresponding to the first channel can be agreed upon by default, so that the information of the DMRS of the first channel can be determined based on the at least two data streams corresponding to the first channel.

[0170] For example, the first channel corresponds to at least one data stream, and by default, the DMRS information associated with each data stream corresponding to the first channel includes, but is not limited to, at least one of the following:

[0171] DMRS ports for each data stream;

[0172] The number of DMRS symbols used in each data stream;

[0173] The position of the DMRS prefix used by each data stream;

[0174] Additional symbols used by each data stream in the DMRS;

[0175] The FD-OCC sequence length of the DMRS used in each data stream;

[0176] The DMRS sequence generation parameters used by each data stream, such as sequence generation initialization parameters.

[0177] In some implementations, the first parameter includes the TB corresponding to the first channel. The DMRS information associated with the TB corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the TB corresponding to the first channel. Specifically, for example, different predefined DMRS information can be used when the TBs corresponding to the first channels are different.

[0178] In some implementations, if the first channel corresponds to at least two TBs, the information of the DMRS associated with each TB corresponding to the first channel can be agreed by default, so that the information of the DMRS of the first channel can be determined based on the at least two TBs corresponding to the first channel.

[0179] For example, the first channel corresponds to at least one TB, and by default, the DMRS information associated with each TB corresponding to the first channel includes, but is not limited to, at least one of the following:

[0180] DMRS ports on each TB;

[0181] The number of DMRS symbols used on each TB;

[0182] The position of the DMRS prefix used on each TB;

[0183] Additional symbols for DMRS used on each TB;

[0184] The FD-OCC sequence length of the DMRS used on each TB;

[0185] The DMRS sequence generation parameters used on each TB, such as sequence generation initialization parameters.

[0186] In some implementations, the first parameter includes the channel type corresponding to the first channel. The DMRS information associated with the channel type corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the channel type. Specifically, for example, different default DMRS information can be used when the channel types corresponding to the first channel are different. The channel types corresponding to the first channel include, but are not limited to: system message type, paging message type, random access related message type, multicast message type, SDT transmission type, common downlink control channel type, common uplink channel type, physical random access channel type, trigger signal type for initiating SSB transmission, and trigger signal type for initiating SIB transmission. For example, the DMRS information predefined for system message SIB1 is different from the DMRS information predefined for the data channel corresponding to SDT transmission.

[0187] In some implementations, the first parameter includes the scheduling type corresponding to the first channel. The DMRS information associated with the scheduling type corresponding to the first channel can be predefined by default, thus allowing the DMRS information of the first channel to be determined based on the scheduling type. Specifically, for example, different default DMRS information can be used when the scheduling type corresponding to the first channel is different. The scheduling type corresponding to the first channel includes, but is not limited to: Configured Grant (CG) scheduling type, semi-persistent scheduling type, and dynamic scheduling type.

[0188] In some implementations, the first parameter includes the MCS corresponding to the first channel. The DMRS information associated with the MCS corresponding to the first channel can be predefined by default, thus allowing the DMRS information of the first channel to be determined based on the MCS corresponding to the first channel. Specifically, for example, when the MCS corresponding to the first channel is different, different predefined DMRS information can be used.

[0189] For example, for the first channel with a high MCS, more DMRS resources (e.g., more DMRS symbols) can be used to ensure its transmission performance; or, for the first channel with a low MCS, more DMRS resources can be used to further ensure its transmission reliability.

[0190] In some implementations, the first parameter includes the transmission timing corresponding to the first channel. The DMRS information associated with the transmission timing of the first channel can be predefined by default, allowing the DMRS information of the first channel to be determined based on the transmission timing. Specifically, for example, different predefined DMRS information can be used when the transmission timings corresponding to the first channel are different. Even for the same first channel, the corresponding DMRS can be different when the first channel transmits at different transmission timings (e.g., time slots).

[0191] Optionally, the DMRS of the first channel may differ at least some of the transmission times corresponding to the first channel. For example, the DMRS may be pattern #1 at transmission time #1 of the first channel, and pattern #2 at transmission time #2 of the first channel.

[0192] Optionally, for multi-slot data transmission channels (such as Transport Blockover Multiple Slots (TBoMS)), the DMRS on different slots can be the same or different, or the DMRS pattern can depend on the number of slots or the slot number.

[0193] In some implementations, the first parameter includes the MCS corresponding to the first channel. The DMRS information associated with the MCS corresponding to the first channel can be predefined by default, thus allowing the DMRS information of the first channel to be determined based on the MCS corresponding to the first channel. Specifically, for example, when the MCS corresponding to the first channel is different, different predefined DMRS information can be used.

[0194] In some implementations, the first parameter includes the time-domain resources corresponding to the first channel. The DMRS information associated with the time-domain resources corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the time-domain resources corresponding to the first channel. Specifically, for example, when the time-domain resources corresponding to the first channel are different, different predefined DMRS information can be used.

[0195] Optionally, the time-domain resources corresponding to the first channel include, but are not limited to, at least one of the following:

[0196] The transmission time window corresponding to the first channel, the transmission period corresponding to the first channel, and the detection timing corresponding to the first channel.

[0197] For example, a PDSCH carrying paging messages on the first channel can determine a specific DMRS based on a specific paging period or a paging monitoring occasion.

[0198] In some implementations, the first parameter includes the frequency domain resources corresponding to the first channel. The DMRS information associated with the frequency domain resources corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the frequency domain resources corresponding to the first channel. Specifically, for example, when the frequency domain resources corresponding to the first channel are different, different predefined DMRS information can be used.

[0199] In some implementations, the first parameter includes a first reference signal or a first reference channel group associated with the first channel. The DMRS information associated with the first reference signal or the first reference channel group can be predefined by default, allowing the DMRS information of the first channel to be determined based on the first reference signal or the first reference channel group associated with it. Specifically, for example, when the first reference signal or the first reference channel group associated with the first channel is different, different predefined DMRS information is used. For instance, paging PDSCHs associated with different reference signals can use specific DMRS configurations.

[0200] In some implementations, the first parameter includes SSB-related information associated with the first channel. The DMRS information associated with the SSB-related information of the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the SSB-related information associated with the first channel. Specifically, for example, when the SSB-related information associated with the first channel is different, different predefined DMRS information is used.

[0201] Optionally, the SSB-related information includes, but is not limited to, at least one of the following:

[0202] Primary Synchronization Signal (PSS) or Secondary Synchronization Signal (SSS) information;

[0203] PBCH DMRS information;

[0204] Index of SSB.

[0205] Optional, PSS or SSS information includes, but is not limited to, at least one of the following:

[0206] The sequence of PSS or SSS, the number of PSS or SSS, the length of PSS or SSS, the time-domain or frequency-domain offset of PSS or SSS, and the time-domain interval between PSS and SSS.

[0207] Optionally, PBCH DMRS information includes, but is not limited to, at least one of the following:

[0208] The sequence of DMRS, the length of DMRS, and the time or frequency domain offset of DMRS.

[0209] For example, suppose the network sends multiple SSBs corresponding to different beams, with each SSB covering a different area. For instance, some SSBs cover building scenarios (where terminals move slowly), while others cover elevated bridge scenarios (where terminals move quickly). In this case, different DMRS patterns can be assigned to the first channel associated with different SSBs (e.g., SIB1, paging messages, etc.) to handle UEs in different scenarios and improve transmission performance. Since the transmission timing of the first channel associated with different SSBs may differ, it can also be understood that the DMRS of the first channel is different at at least some transmission times.

[0210] In some implementations, the first parameter includes the RNTI corresponding to the first channel. The DMRS information associated with the RNTI of the first channel can be predefined by default, allowing the DMRS information of the first channel to be determined based on the RNTI. Specifically, for example, different default DMRS information can be used when the RNTIs corresponding to the first channels are different. For instance, a specific random access RA-RNTI may be associated with a specific DMRS.

[0211] In some implementations, the first parameter includes the PRACH resource corresponding to the first channel. The DMRS information associated with the PRACH resource corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the PRACH resource. Specifically, for example, when the PRACH resources corresponding to the first channel are different, different predefined DMRS information can be used.

[0212] For example, a specific random access preamble or preamble group is associated with a specific DMRS.

[0213] For example, a specific RACH Occasion (RO) or RO group is associated with a specific DMRS.

[0214] In some implementations, the first parameter includes the search space corresponding to the first channel. The DMRS information associated with the search space corresponding to the first channel can be predefined by default, thereby allowing the DMRS information of the first channel to be determined based on the search space corresponding to the first channel. Specifically, for example, different predefined DMRS information can be used when the search spaces corresponding to the first channel are different.

[0215] For example, the search space corresponding to the first channel can be the search space corresponding to the PDCCH that schedules the first channel.

[0216] In some implementations, the first parameter includes the QCL relationship associated with the first channel. The DMRS information associated with the QCL relationship can be predefined by default, allowing the DMRS information of the first channel to be determined based on the QCL relationship. Specifically, for example, different default DMRS information can be used when the QCL relationships associated with the first channel are different. For instance, even for the same first channel, different QCL relationships can result in different DMRS information.

[0217] Optionally, the QCL relationship associated with the first channel may include at least one of the following:

[0218] The spatial relationship associated with the first channel, and the beam associated with the first channel.

[0219] For example, the DMRS of the first channel differs for at least partially different spatial relationships or beams.

[0220] For example, the first channel transmitted on beam #1 has DMRS pattern #1, and the first channel transmitted on beam #2 has DMRS pattern #2.

[0221] It should be noted that spatial relationship can also be understood as the spatial relationship corresponding to a reference signal (e.g., SSB) or the spatial relationship corresponding to a group of reference signals (e.g., group of SSBs).

[0222] It should be noted that the first signaling can be the signaling indicated in the signaling that schedules the first channel (as described in the second signaling below). Of course, the first signaling can also be other signaling associated with the first channel, and this application does not limit this.

[0223] In some embodiments, the first signaling includes, but is not limited to, at least one of the following:

[0224] Frequency domain resource assignment (FDRA) domain;

[0225] Time domain resource assignment (TDRA) domain;

[0226] Modulation coding domain;

[0227] Redundant version fields;

[0228] System information indication field;

[0229] TB scaling domain;

[0230] Short message indicator field;

[0231] Short message field;

[0232] DMRS information field;

[0233] DMRS information configuration fields;

[0234] Terminal identifier configuration field;

[0235] Access type configuration field;

[0236] Master Information Block (MIB);

[0237] Layer 1 payload.

[0238] Optionally, the DMRS information field is used to indicate the DMRS information of the first channel.

[0239] Optionally, the DMRS information configuration field is used to configure the DMRS information of the first channel.

[0240] Optionally, the DMRS information of the first channel can be indicated by the MIB.

[0241] Optionally, the DMRS information of the first channel can be indicated by the layer-1 load. For example, specific bits in the layer-1 load are used to indicate the DMRS information of the first channel.

[0242] Optionally, the FDRA field can be the FDRA field in the DCI that schedules the first channel, or the FDRA field can be the FDRA field in another DCI that is associated with the first channel. Specifically, for example, different frequency domain resources indicated by the FDRA field can correspond to different DMRS information.

[0243] Optionally, the FDRA field in the DCI of the first channel includes at least one of the following:

[0244] The FDRA field in the DCI of the SIB scheduling;

[0245] Schedule the FDRA field in the DCI of Msg2;

[0246] Schedule the FDRA field in the DCI of Msg3;

[0247] Schedule the FDRA field in the DCI of Msg4;

[0248] Schedule the FDRA field in Msg5's DCI;

[0249] The FDRA field in the DCI of the scheduler MsgA;

[0250] The FDRA field in the DCI of the scheduler MsgB;

[0251] The FDRA field in the DCI of the dispatch paging message;

[0252] Schedule the FDRA field in the DCI of the corresponding PDSCH or PUSCH for SDT transmission.

[0253] Optionally, the TDRA field can be the TDRA field in the DCI that schedules the first channel, or the TDRA field can be the TDRA field in another DCI that is associated with the first channel. Specifically, for example, different time-domain resources indicated by the TDRA field can correspond to different DMRS information.

[0254] Optionally, the TDRA field in the DCI of the first channel includes at least one of the following:

[0255] The TDRA field in the DCI of the SIB scheduling;

[0256] Schedule the TDRA field in the DCI of Msg2;

[0257] Schedule the TDRA field in the DCI of Msg3;

[0258] Schedule the TDRA field in the DCI of Msg4;

[0259] Schedule the TDRA field in Msg5's DCI;

[0260] The TDRA field in the DCI of the scheduler MsgA;

[0261] The TDRA field in the DCI of the scheduler MsgB;

[0262] The TDRA field in the DCI of the dispatch paging message;

[0263] Schedule the TDRA field in the DCI of the corresponding PDSCH or PUSCH for SDT transmission.

[0264] Optionally, the modulation and coding domain can be the modulation and coding domain in the DCI that schedules the first channel, or the modulation and coding domain can be the modulation and coding domain in another DCI that is associated with the first channel. Specifically, for example, different MCS index ranges indicated by the modulation and coding domain can correspond to different DMRS information.

[0265] Optionally, the modulation and coding domain in the DCI of the first channel includes at least one of the following:

[0266] The modulation and coding domain in the DCI of the SIB scheduling;

[0267] The modulation and coding domain in the DCI of Msg2 is scheduled;

[0268] The modulation and coding domain in the DCI of Msg3 is scheduled;

[0269] The modulation and coding domain in the DCI of Msg4 is scheduled;

[0270] The modulation and coding domain in the DCI of Msg5 is scheduled;

[0271] The modulation and coding domain in the DCI of the scheduler MsgA;

[0272] The modulation and coding domain in the DCI of the scheduler MsgB;

[0273] The modulation and coding domain in the DCI of the dispatch paging message;

[0274] The modulation and coding domain in the DCI of the corresponding PDSCH or PUSCH for the SDT transmission is scheduled.

[0275] Optionally, the TB scaling domain can be the TB scaling domain in the DCI that schedules the first channel, or the TB scaling domain can be the TB scaling domain in another DCI that is associated with the first channel. Specifically, for example, different TB size ranges indicated by the TB scaling domain can correspond to different DMRS information.

[0276] Optionally, the TB scaling domain in the DCI for scheduling the first channel includes at least one of the following:

[0277] Schedule the TB scaling domain in Msg2's DCI;

[0278] Schedule the TB scaling domain in Msg3's DCI;

[0279] Schedule the TB scaling domain in Msg4's DCI;

[0280] Schedule the TB scaling domain in Msg5's DCI;

[0281] Schedule the TB scaling domain in the DCI of MsgA;

[0282] Schedule the TB scaling domain in the DCI of MsgB;

[0283] The TB scaling field in the DCI for scheduling paging messages;

[0284] Schedule the TB scaling field in the DCI of the corresponding PDSCH or PUSCH for SDT transmission.

[0285] Optionally, the DMRS information field can be the DMRS information field in the DCI that schedules the first channel, or the DMRS information field can be the DMRS information field in another DCI that is associated with the first channel.

[0286] Optionally, the DMRS information field in the DCI of the first channel includes at least one of the following:

[0287] The DMRS information field in the DCI of the SIB scheduling;

[0288] The DMRS information field in the DCI of the scheduler Msg2;

[0289] The DMRS information field in the DCI of the scheduler Msg3;

[0290] The DMRS information field in the DCI of the scheduler Msg4;

[0291] The DMRS information field in the DCI of the scheduler Msg5;

[0292] The DMRS information field in the DCI of the scheduler MsgA;

[0293] The DMRS information field in the DCI of the scheduler MsgB;

[0294] The DMRS information field in the DCI of the dispatch paging message;

[0295] Schedule the DMRS information field in the DCI of the corresponding PDSCH or PUSCH for SDT transmission.

[0296] It should be noted that the DMRS information field can also be called or replaced as the antenna port field, or other similar names, and this application does not limit it to this.

[0297] Optionally, the short message indication field can be the short message indication field in the DCI that schedules the first channel, or the short message indication field can be the short message indication field in other DCIs that are associated with the first channel.

[0298] Optionally, the short message indication field in the DCI of the first channel includes at least one of the following:

[0299] Short message indicator field in the DCI of dispatch paging messages;

[0300] The short message indication field in the DCI of the corresponding PDSCH or PUSCH for the SDT transmission is scheduled.

[0301] Optionally, the short message indication field includes at least X groups of indication bits, which are used to indicate information of the DMRS, and the X groups of indication bits satisfy at least one of the following:

[0302] The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel;

[0303] The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel;

[0304] Where X, X1, and X2 are all positive integers.

[0305] Optionally, the X group of indicator bits can be divided into the following three cases to indicate the information of the DMRS:

[0306] Case 1: Each group of indicator bits in group X indicates different DMRS information of the same channel (such as the first channel), in which case X1 = X;

[0307] Case 2: Each group of indicator bits in the X group indicates DMRS information for different channels, such as X1 corresponding to the first channel and X2 corresponding to the second channel. In this case, X = X1 + X2.

[0308] For example, some indications in the short message indication field correspond to the DMRS of the PDSCH of the paging message, and some indications in the short message indication field correspond to the DMRS of the PDSCH or PUSCH of the SDT transmission.

[0309] Case 3: Each group of indicator bits in group X simultaneously indicates DMRS information of multiple channels, in which case X = X1 = X2;

[0310] For example, a set of indicator bits indicates both the DMRS of the PDSCH of the paging message and the DMRS of the PDSCH or PUSCH corresponding to the SDT transmission. Optionally, the PDSCH of the paging message and the PDSCH or PUSCH corresponding to the SDT transmission can use the same DMRS, or they can use different DMRS.

[0311] Optionally, the short message field can be a short message field in the DCI that schedules the first channel, or the short message field can be a short message field in another DCI that is associated with the first channel.

[0312] Optionally, the short message field in the DCI of the first scheduling channel includes at least one of the following:

[0313] Short message field in the DCI for scheduling paging messages;

[0314] Schedule the short message field in the DCI of the corresponding PDSCH or PUSCH for SDT transmission.

[0315] Optionally, the short message field includes at least Y groups of indicator bits, which are used to indicate information of the DMRS, and the Y groups of indicator bits satisfy at least one of the following:

[0316] The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel;

[0317] The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel;

[0318] Where Y, Y1, and Y2 are all positive integers.

[0319] Optionally, the Y group of indicator bits can be divided into the following three cases to indicate the information of the DMRS:

[0320] Case 1: Each group of indicator bits in group Y indicates different DMRS information of the same channel (such as the first channel), in which case Y1 = Y;

[0321] Case 2: Each group of indicator bits in the Y group indicates DMRS information for different channels, such as Y1 corresponding to the first channel and Y2 corresponding to the second channel. In this case, Y = Y1 + Y2.

[0322] For example, some indications in the short message field correspond to the DMRS of the PDSCH of the paging message, and some indications in the short message field correspond to the DMRS of the PDSCH or PUSCH of the SDT transmission.

[0323] Case 3: Each group of indicator bits in group Y simultaneously indicates DMRS information of multiple channels, in which case Y = Y1 = Y2;

[0324] For example, a set of indicator bits indicates both the DMRS of the PDSCH of the paging message and the DMRS of the PDSCH or PUSCH corresponding to the SDT transmission. Optionally, the PDSCH of the paging message and the PDSCH or PUSCH corresponding to the SDT transmission can use the same DMRS, or they can use different DMRS.

[0325] Optionally, the redundant version field can be a redundant version field in the DCI that schedules the first channel, or the redundant version field can be a redundant version field in another DCI that is associated with the first channel. For example, the redundant version field in the DCI that schedules the first channel includes the redundant version field in the DCI that schedules SIB1. Specifically, different redundant versions can correspond to different DMRS.

[0326] Optionally, the system information indication field can be a system information indication field in the DCI that schedules the first channel, or the system information indication field can be a system information indication field in another DCI that is associated with the first channel. For example, the system information indication field in the DCI that schedules the first channel includes the system information indication field in the DCI that schedules SIB1.

[0327] Optionally, the DMRS information configuration field, terminal identifier configuration field, and access type configuration field correspond to the situation where the SDT transmits the corresponding PDSCH or PUSCH DMRS information through the first paging message field; wherein, the DMRS information configuration field is used to configure DMRS information, for example, the DMRS information configuration field is configured in the paging record parameters; wherein, the terminal identifier configuration field is used to configure the terminal identifier, different terminal identifier ranges can correspond to different DMRS information; wherein, the access type configuration field is used to configure the access type, different access types correspond to different DMRS information, for example, the DMRS corresponding to an idle state terminal is pattern #1, and the DMRS corresponding to a deactivated state terminal is pattern #2.

[0328] It should be noted that, for SIB1, in related technologies, SIB1 is indicated through Control Resource Set (CORESET) #0. However, the DCI format 1_0 in CORESET #0 does not specifically indicate the DMRS; instead, it defaults to the DMRS used by SIB1. Therefore, for SIB1 with larger data loads in the future, or for SIB1 in different scenarios, its DMRS information can be further indicated through signaling.

[0329] In some implementations, the DMRS information of SIB1 can be indicated by a first DCI indication field, wherein the first DCI indication field includes at least one of the following:

[0330] FDRA domains, for example, SIB1 occupies different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0331] TDRA fields, for example, SIB1 occupies different symbols corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0332] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0333] Redundant version domains, for example, different redundant versions correspond to different DMRS. When the number of retransmissions reaches a certain threshold, or when using a feature-specific redundant version, the corresponding DMRS can consume more resources, thereby improving retransmission performance.

[0334] System information indication fields, for example, when the indication is SIB1, use a different DMRS than other SIBs;

[0335] The DMRS information field is used to indicate the DMRS information of SIB1. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0336] It should be noted that for the PUSCH or PDSCH in the relevant messages during the random access process (such as at least one of Msg2, Msg3, Msg4, Msg5, MsgA, and MsgB), the DMRS information needs to be indicated.

[0337] In some implementations, the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access procedure can be indicated by at least one of the following:

[0338] Indications are made through preambles, for example, a specific preamble or preamble group is associated with a specific DMRS;

[0339] Indications are made through ROs, for example, a specific RO or group of ROs is associated with a specific DMRS;

[0340] Indications are made via RA-RNTI; for example, a specific RA-RNTI is associated with a specific DMRS.

[0341] FDRA domains, for example, PUSCH or PDSCH in relevant messages during random access procedures occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0342] TDRA domain, for example, PUSCH or PDSCH in relevant messages during random access process occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0343] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0344] TB scaling domains, for example, different DMRS for different TB size ranges;

[0345] The DMRS information field is used to indicate the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access process. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0346] The search space corresponding to PUSCH or PDSCH in the relevant messages during the random access process; for example, different search spaces are associated with different DMRS.

[0347] It should be noted that the DMRS used for paging messages in related technologies is also the default convention, and therefore can be enhanced accordingly. In some implementations, the DMRS information of the paging message can be indicated by a second DCI indicator field, which includes at least one of the following:

[0348] The Short Message Indicator (SMI) field indicates different DMRS information depending on the specific bit it indicates. For example, when the SMI field indicates bit 00, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the paging message is pattern #2. When the SMI field indicates bit 01, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the paging message is pattern #1. When the SMI field indicates bit 10, it is unrelated to the DMRS of the paging message, or it can be understood as not requiring DMRS indication. When the SMI field indicates bit 11, the DMRS of the paging message is pattern #1, or DMRS is pattern #2, or DMRS is pattern #3 (which can be combined with other second DCI indicator fields for joint indication).

[0349] In the short message field, when the short message indicator field indicates a specific bit, the corresponding DMRS information is different; for example, bit 0: corresponds to DMRS pattern #1, bit 1: corresponds to DMRS pattern #2, bit 2: corresponds to DMRS pattern #3, ..., bit 8: corresponds to DMRS pattern #8;

[0350] FDRA domains, for example, PUSCH or PDSCH in relevant messages during random access procedures occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0351] TDRA domain, for example, PUSCH or PDSCH in relevant messages during random access process occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0352] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0353] TB scaling domains, for example, different DMRS for different TB size ranges;

[0354] The DMRS information field is used to indicate the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access process. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0355] It should be noted that SDT transmission for paging message scheduling can be divided into two cases: the first is that SDT transmission is scheduled by the DCI that schedules paging messages; the second is that SDT transmission is scheduled by paging messages (i.e., PDSCH).

[0356] In some implementations, for cases where SDT transmissions are scheduled by the DCI that schedules paging messages, the DMRS of the corresponding PDSCH or PUSCH for the SDT transmission can be indicated by a third DCI indication field, wherein the third DCI indication field includes at least one of the following:

[0357] The Short Message Indicator (SMI) field indicates different DMRS information depending on the specific bit it indicates. For example, when the SMI field indicates bit 00, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #2. When the SMI field indicates bit 01, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #1. When the SMI field indicates bit 10, it can be used to indicate the DMRS of the corresponding PDSCH or PUSCH for SDT transmission, for example, pattern #3. When the SMI field indicates bit 11, the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #1, or pattern #2, or pattern #3, or pattern #4 (which can be combined with other third DCI indicator fields for joint indication).

[0358] The short message field corresponds to different DMRS information when it indicates a specific bit; for example, bit 0 corresponds to DMRS pattern #1, bit 1 corresponds to DMRS pattern #2, bit 2 corresponds to DMRS pattern #3, ..., bit 8 corresponds to DMRS pattern #8.

[0359] FDRA domains, for example, the PDSCH or PUSCH corresponding to SDT transmissions occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0360] TDRA domains, for example, the PDSCH or PUSCH corresponding to SDT transmissions occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0361] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0362] TB scaling domains, for example, different DMRS for different TB size ranges;

[0363] The DMRS information field is used to indicate the DMRS information of the corresponding PDSCH or PUSCH transmitted by SDT. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0364] Paging time-domain resources, such as determining specific DMRS for a specific paging period or paging detection occasion;

[0365] Paging frequency domain resources, the reference signal or reference signal group associated with Paging, such as different reference signals corresponding to different paging PDSCH can use specific DMRS configurations.

[0366] It should be noted that when the DCI that schedules paging messages schedules both the PDSCH of the paging messages and the PDSCH or PUSCH corresponding to the SDT transmission, the DMRS of the two can be jointly indicated or separately indicated.

[0367] In some implementations, for cases where SDT transmissions are scheduled by the DCI that schedules paging messages, the DMRS information of the PDSCH indicating the paging message and the DMRS information of the PDSCH or PUSCH corresponding to the SDT transmission can be combined in the following way:

[0368] The short message indication field, for example, some indications in the short message indication field correspond to the DMRS information of the PDSCH of the paging message, and some indications correspond to the DMRS information of the PDSCH or PUSCH of the SDT transmission; for another example, some indications in the short message indication field correspond to both the DMRS information of the PDSCH of the paging message and the DMRS information of the PDSCH or PUSCH of the SDT transmission.

[0369] Short message field, for example, some indications in the short message field correspond to the DMRS information of the PDSCH of the paging message, and some indications correspond to the DMRS information of the PDSCH or PUSCH corresponding to the SDT transmission.

[0370] In some implementations, it can be agreed by default that the PDSCH and SDT transmissions of paging messages use the same DMRS information for their corresponding PDSCH or PUSCH.

[0371] In some implementations, when the SDT transmission is scheduled by a paging message (i.e., PDSCH), the DMRS information of the corresponding PDSCH or PUSCH for the SDT transmission can be indicated through a first paging message field, wherein the first paging message field includes at least one of the following:

[0372] The DMRS information configuration field is used to configure DMRS information. For example, the DMRS information configuration field is configured in the PagingRecord parameter.

[0373] The terminal identifier configuration field is used to configure the terminal identifier. Different terminal identifier ranges can correspond to different DMRS information.

[0374] The access type configuration field is used to configure the access type. Different access types correspond to different DMRS information. For example, the DMRS corresponding to an idle terminal is pattern #1, and the DMRS corresponding to a deactivated terminal is pattern #2.

[0375] In addition to the fields in the paging message, the DMRS information of the corresponding PDSCH or PUSCH in the SDT transmission can also be implicitly indicated through the PDSCH related information in the paging message, such as the time and frequency resources of the PDSCH in the paging message, DMRS information, etc. However, this information can be deduced through the TDRA, FDRA and other information in the DCI of the scheduling paging message, so it can also be understood as being indicated by the DCI of the scheduling paging message.

[0376] In some implementations, besides indicating DMRS information through DCI or paging as mentioned above, DMRS can also be indicated using some common information for all the aforementioned situations. For example, the DMRS information of the first channel can be determined using the following information:

[0377] MIB;

[0378] The L1-payload uses specific bits to indicate DMRS information.

[0379] SSB-related information, including PSS or SSS, PBCH DMRS, and SSB index; for example, the sequence of PSS or SSS, the number of PSS or SSS, the length of PSS or SSS, the time-domain or frequency-domain offset of PSS or SSS, and the time-domain interval between PSS and SSS; for example, the sequence of DMRS, the length of DMRS, and the time-domain or frequency-domain offset of DMRS.

[0380] Paging time-domain resources, such as determining specific DMRS for a specific paging period or paging detection actual (monitoring occasion);

[0381] Paging frequency domain resources;

[0382] The reference signal or reference signal group associated with paging, such as the pagingPDSCH corresponding to different reference signals, can use a specific DMRS configuration.

[0383] The aforementioned information can also be used in conjunction with the DCI or paging message for scheduling the first channel to provide a combined indication. For example, the information above may indicate some DMRS parameters, while the DCI or paging message for scheduling the first channel may indicate other parameters, thus forming a complete DMRS information indication.

[0384] In some embodiments, the first signal includes, but is not limited to, at least one of the following:

[0385] WUS;

[0386] PRACH signal;

[0387] Sounding Reference Signal (SRS);

[0388] Positioning reference signals (PRS);

[0389] Uplink control channel;

[0390] Uplink data channel.

[0391] In this embodiment, the terminal can report (or request or report) the DMRS information of the first channel through the first signal, and can determine the DMRS information of the first channel based on the first signal.

[0392] It should be noted that when the parameters of the first channel are relatively limited, its corresponding DMRS does not need to be very flexible. Furthermore, to save on indication overhead, some predefined information can be used for the DMRS of the first channel; for example, at least one DMRS indication table can be predefined. This allows for the indication or reporting of DMRS information with minimal indication overhead, or simplifies the association between the first parameters and DMRS information.

[0393] In some embodiments, the DMRS information corresponds to at least one DMRS indication table;

[0394] Wherein, the DMRS indication table satisfies at least one of the following:

[0395] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter;

[0396] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication;

[0397] The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal.

[0398] Optionally, different DMRS indication tables may correspond to first channels of different channel types, or different DMRS indication tables may correspond to different types of DMRS;

[0399] Optionally, each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

[0400] Optionally, the information of each group of DMRS in the DMRS indication table corresponds to the same DMRS symbol.

[0401] In this embodiment, the terminal can determine the DMRS information of the first channel from at least one DMRS indication table based on at least one of the first parameter, the first signaling, and the first signal.

[0402] Optionally, the information for each group of DMRS in the DMRS indicator table can be the information for each group of DMRS in the DMRS indicator table (e.g., each row of the DMRS indicator table).

[0403] In some implementations, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first parameter. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first parameter. Similarly, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first signaling indication. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first signaling indication. Similarly, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first signal reporting. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first signal reporting.

[0404] Optionally, at least one DMRS indicator table can be predefined, wherein the DMRS indicator table includes DMRS information in at least two dimensions.

[0405] Optionally, different channel types of the first channel correspond to different DMRS indication tables, or different scheduling types of the first channel correspond to different DMRS indication tables, or different terminal capabilities supported by the terminal for different DMRS types correspond to different DMRS indication tables.

[0406] In some implementations, assuming that the indicator bits corresponding to a certain DCI indicator field (e.g., the first, second, or third DCI indicator field) are x bits, a DMRS indicator table with no more than log2(x) rows can be defined. Assuming the DCI bit overhead available for DMRS indication is 3 bits, then at most 8 DMRS patterns can be indicated for transmission on the first channel. Assuming the number of data streams corresponding to the first channel is 1 by default, an example of a DMRS indicator table can be shown in Table 1 below.

[0407] Table 1

[0408] index DMRS port DMRS symbol location DMRS configuration type 0 0 2 Type 1 1 0 2,7 Type 1 2 0 2 Type2 3 0 2,7 Type2 4 1 3 Type 1 5 1 3,11 Type 1 6 1 3 Type2 7 1 3,11 Type2

[0409] In Table 1 above, since the default first channel's PDSCH or PUSCH supports a maximum of one stream, it corresponds to DMRS port 0 or 1, or other numbers, such as 1000 or 1001, which will not be elaborated here. Furthermore, the DMRS indicator table can indicate different DMRS configuration types suitable for different scenarios, such as scenarios with varying multipath delays.

[0410] In some implementations, assuming that the indicator bits corresponding to a certain DCI indicator field (such as the first, second, or third DCI indicator field) are x bits, a DMRS indicator table with no more than log2(x) rows can be defined. Assuming the DCI bit overhead available for DMRS indication is 3 bits, then at most 8 DMRS patterns can be indicated for transmission on the first channel. Assuming the first channel corresponds to a default of 2 data streams, and a certain DMRS configuration type is used by default, an example of a DMRS indicator table can be shown in Table 2 below.

[0411] Table 2

[0412] index DMRS port DMRS symbol location 0 0 2 1 1 2 2 0,1 2 3 2,3 2 4 0 3,11 5 1 3,11 6 0,1 3,11 7 2,3 3,11

[0413] In Table 2 above, the PDSCH or PUSCH of the first channel supports a maximum of 2 streams, thus corresponding to a maximum of two DMRS ports. At the same time, the case of multiple users multiple-in multiple-out (MU-MIMO) is taken into consideration, so multiple pairs of orthogonal ports are configured. In addition, depending on the mobile speed, DMRS with indices 0-3 can be indicated at low speeds, and DMRS with indices 4-7 can be indicated at high speeds.

[0414] In some embodiments, the at least one first channel is scheduled via a second signaling;

[0415] Wherein, the second signaling includes, but is not limited to, at least one of the following:

[0416] MIB;

[0417] Layer 1 load;

[0418] RRC signaling;

[0419] Media Access Control Element (MAC-CE) signaling;

[0420] DCI, for example, paging PDCCH or SIB1 PDCCH;

[0421] PDSCH, such as paging messages, SIB1 and other system messages;

[0422] PUSCH, such as Msg3 or MsgA, idle small data transmission channels, etc.;

[0423] Reference signals, such as random access preamble, SRS, Channel State Information Reference Signal (CSI-RS), Tracking Reference Signal (TRS), PRS, SSB, WUS signal, etc.

[0424] Broadcast signaling for non-serving cells;

[0425] Broadcast signaling on non-serving carriers;

[0426] Broadcast signaling for non-serving TRPs;

[0427] Random Access Response (RAR) for non-serving cells.

[0428] The at least one first channel described in the embodiments of this application is scheduled through the second signaling. It can also be understood or replaced as: at least one first channel is configured through the second signaling, or at least one first channel is triggered through the second signaling, or at least one first channel is activated through the second signaling. The embodiments of this application do not limit this.

[0429] In some embodiments, the relationship between the first channel and the second signaling that schedules the first channel satisfies one of the following:

[0430] A single second signaling can schedule a first channel; for example, a DCI can schedule a PDSCH (such as a PDSCH corresponding to a SIB1).

[0431] A single second signaling can schedule multiple first channels. For example, a DCI can schedule multiple PDSCHs or PUSCHs. In this case, multiple PDSCHs or PUSCHs can correspond to the same TB or correspond to different TBs. Another example is that a DCI can schedule at least one PDSCH and at least one PUSCH.

[0432] For example, it's easy to understand how a single second signaling can schedule a first channel; for instance, the most common example is a DCI scheduling a PDSCH or PUSCH. However, it's important to note that the second signaling can also be a data channel, such as scheduling another PDSCH or a PUSCH via a PDSCH, especially for SDT transmissions scheduled by paging. If you want the terminal to perform SDT transmissions in idle or deactivated states, one way is to trigger the data channel used for SDT transmissions via paging. For example, a DCI scheduling a paging message might schedule a paging message, which in turn schedules a PDSCH or PUSCH for SDT transmission. Furthermore, the first channel here can also support transmissions of multiple terabytes (TB), multiple layers, or multiple time slots.

[0433] For example, a single second signaling message scheduling multiple first channels can be divided into two cases: First, the multiple first channels scheduled by one second signaling message correspond to the same TB (Transmission Block), such as a DCI scheduling multiple PDSCH repetitions of the same TB; second, the multiple first channels scheduled by one second signaling message correspond to different TBs, such as a DCI scheduling two PDSCHs corresponding to different TBs, or a DCI scheduling both a PDSCH and a PUSCH. Especially for SDT (Simplified Data Transmission) scheduled by paging, if the goal is to enable SDT transmission in the idle or deactivated state, one approach is to trigger the data channel used for SDT transmission through paging. For example, a DCI scheduling paging messages schedules both the paging messages and a PDSCH or PUSCH for SDT transmission. Alternatively, a DCI scheduling paging messages may schedule a PDSCH or PUSCH for SDT transmission, which in turn schedules a PDSCH or PUSCH for SDT transmission.

[0434] It should be noted that whether scheduling one or multiple first channels for the second signaling, there may be situations where scheduling occurs across time slots or not. Therefore, the DMRS of the first channel can be enhanced accordingly for different scheduling scenarios.

[0435] In some embodiments, the DMRS of the at least one first channel satisfies at least one of the following:

[0436] The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit;

[0437] The DMRS of multiple first channels scheduled by the second signaling occupy at least one time domain unit;

[0438] The DMRS of the multiple first channels scheduled by the second signaling occupies different time domain units;

[0439] The DMRS of multiple first channels scheduled by the second signaling form a time-domain bundle;

[0440] The DMRS information of the multiple first channels scheduled by the second signaling is different.

[0441] Optionally, the time-domain unit can be one of the following: time slot, symbol, or subframe.

[0442] In this embodiment, the DMRS of multiple first channels scheduled by the second signaling form a time-domain bundle. The terminal or network side can perform joint channel estimation based on the time-domain bundle, thereby improving the performance of channel estimation.

[0443] Optionally, the DMRS information of the multiple first channels scheduled by the second signaling is different, including but not limited to at least one of the following:

[0444] The DMRS symbol positions are different (e.g., the DMRS leading symbol is in a different position relative to the first channel symbol).

[0445] The number of DMRS symbols differs (e.g., the number of extra symbols differs);

[0446] The location or quantity of frequency domain resources occupied by DMRS may differ (e.g., the number of REs occupied in each RB of DMRS may differ).

[0447] The DMRS sequence resources are generated in different ways (e.g., the generation of DMRS sequences for different first channels depends on the number or position of the first channel).

[0448] In some implementations, the DMRS of the first channel occupies at least one time slot (either across time slots or within a single time slot), including at least one of the following:

[0449] A DMRS of a first channel scheduled by a second signaling occupies at least one time slot. For example, a PDSCH of a DCI scheduled occupies multiple time slots, meaning that the DMRS also occupies multiple time slots.

[0450] Multiple DMRS of a second signaling scheduler occupy at least one time slot. For example, multiple repetitions of a PDSCH scheduled by a DCI scheduler occupy multiple time slots.

[0451] The DMRS of multiple first channels scheduled by a second signaling may occupy different time slots. For example, a paging message scheduled by a DCI and the corresponding PDSCH or PUSCH of an SDT transmission may be in different time slots. The DMRS of a paging message scheduled by a DCI and the corresponding PDSCH or PUSCH of an SDT transmission may be independently indicated in the DCI.

[0452] In some implementations, when a second signaling dispatches multiple first channels, the DMRS of these multiple first channels can form a joint bundle, thereby improving channel estimation performance. Furthermore, the number of symbols and symbol positions occupied by the DMRS corresponding to each first channel can be different, thus optimizing the DMRS within the entire bundle.

[0453] In some implementations, the DMRS of multiple first channels scheduled by one or more second signaling methods satisfy at least one of the following relationships:

[0454] Multiple first-channel DMRSs form a bundle, and the terminal or network side can perform joint channel estimation based on the bundle;

[0455] Multiple first channel DMRSs can be different (e.g., multiple repetitions of the first channel).

[0456] This application proposes that multiple first channels, each scheduled by a second signaling, can also form a DMRS bundle, thereby fully utilizing the mutual DMRS to improve channel estimation performance; the DMRS of the multiple first channels can be different, thus optimizing the overall DMRS pattern. For example, the DMRS pre-symbol in the first PDSCH is in the third symbol of the first PDSCH, and the DMRS pre-symbol in the second PDSCH is in the first symbol of the second PDSCH, such as... Figure 3 As shown; for example, the DMRS in the first PDSCH occupies two symbols (such as the third and eighth symbols), while the DMRS in the second PDSCH only occupies one symbol (such as the first symbol), as shown. Figure 4 As shown, this saves overall DMRS overhead. In other words, the application of DMRS bundling has been extended to transmission channels in connectionless states or on public resources, such as SIB1, paging, related messages of random access procedures, SDT transmission, and other scenarios.

[0457] In some embodiments, the method 200 for determining DMRS information further includes:

[0458] The terminal reports the first capability information;

[0459] The first capability information includes, but is not limited to, at least one of the following:

[0460] The terminal supports at least one DMRS configuration for transmission on at least one of the first channels;

[0461] The applicable conditions for the information of at least one of the first channels supported by the terminal for transmission of DMRS.

[0462] The terminal supports the simultaneous use of at least two DMRS configurations;

[0463] The terminal supports the simultaneous use of at least two DMRS configurations combined information (such as combined identifiers);

[0464] The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations;

[0465] The terminal supports switching between at least two DMRS configurations.

[0466] In this embodiment, the terminal reports first capability information, so that the network-side device can know the DMRS configuration supported by the terminal. The network-side device can configure or indicate the DMRS information of the first channel for terminals that support different DMRS configuration capabilities, or determine the corresponding DMRS information for a specific one or more first channel transmissions.

[0467] In some embodiments, the applicable conditions for the DMRS information supported by the terminal for transmission over at least one of the first channels include at least one of the following:

[0468] The terminal supports the frequency bands supported by DMRS information for transmission on at least one of the first channels.

[0469] The power consumption or energy level applicable to the DMRS information supported by the terminal for transmission of at least one of the first channels;

[0470] The reliability of the DMRS information supported by the terminal for transmission over at least one of the first channels;

[0471] The terminal supports the applicable delay for DMRS information transmitted on at least one of the first channels.

[0472] It should be noted that the applicable conditions for the DMRS information supported by the terminal for transmission of at least one of the first channels can also be replaced by the applicable key performance indicators (KPIs) for the DMRS information supported by the terminal for transmission of at least one of the first channels. This application does not limit this.

[0473] The terminal reporting of the first capability information described in the embodiments of this application can be replaced by: the terminal indicating the first capability information, or the terminal requesting the first capability information. This application does not limit this.

[0474] In some embodiments, the terminal reports first capability information, including:

[0475] The terminal reports the first capability information through at least one of the following:

[0476] PRACH, for example, PRACH can be MsgA PRACH or Msg 1PRACH;

[0477] WUS;

[0478] SRS;

[0479] Message 3 of the random access procedure, for example, reporting the first capability information through the resources of Msg3 PUSCH, or reporting the first capability information through the information carried by Msg3 PUSCH, or reporting the first capability information through the bits of Msg3 PUSCH;

[0480] Message A in the random access procedure, for example, reporting first capability information through resources of MsgA PUSCH, or reporting first capability information through information carried by MsgA PUSCH, or reporting first capability information through bits of MsgA PUSCH;

[0481] Uplink control signaling, such as Uplink Control Information (UCI);

[0482] RRC signaling, for example, connected terminals can report first capability information through RRC signaling;

[0483] The second signal, for example, is a specific signal that is defined separately.

[0484] In some implementations, the terminal reports the first capability information via PRACH, including at least one of the following:

[0485] The terminal reports the first capability information via a PRACH transmission window.

[0486] The terminal reports the first capability information through a specific random access opportunity (RACH Occasion, RO);

[0487] The terminal reports the first capability information via a specific PRACH preamble;

[0488] The terminal reports the first capability information by combining at least one of a specific RO and a specific PRACH preamble with other features to obtain a PRACH resource corresponding to the feature combination.

[0489] In some implementations, the terminal reports the corresponding DMRS information supported by the terminal through different transmission time windows of at least one of PRACH, WUS, SRS, message 3 of the random access procedure, message A of the random access procedure, uplink control signaling, RRC signaling, and a second signal. For example, when all uplink and downlink signals transmitted through a Reconfigurable Intelligent Surface (RIS) and uplink and downlink signals not transmitted through RIS are in different time windows, the network side can determine that the terminal transmitting the WUS signal has DMRS information corresponding to the target signal channel of that time window based on the specific uplink signal (such as a WUS signal) received in different time windows.

[0490] In some embodiments, the reporting granularity of the first capability information includes, but is not limited to, at least one of the following:

[0491] The channel type of the first channel;

[0492] The scheduling type of the first channel;

[0493] Terminal type;

[0494] terminal;

[0495] Terminal group;

[0496] frequency band;

[0497] Frequency band group;

[0498] Application scenarios;

[0499] TRP;

[0500] TRP group;

[0501] residential community;

[0502] Community group;

[0503] carrier wave;

[0504] Carrier group;

[0505] Reference signals, for example, reference signals selected or associated by the terminal for determining resources related to transmission on the first channel;

[0506] Reference signal group, for example, the reference signal group in which the terminal selects or associates reference signals for determining the relevant resources for the first channel transmission.

[0507] It should be noted that each reporting granularity corresponds to the reporting of one type of first capability information. For example, when corresponding to the channel type of the first channel, each channel type corresponds to the reporting of one type of first capability information, or it can be understood that different channel types correspond to different reporting of first capability information. Specifically, for channel type #1, the terminal reports the DMRS information it supports for channel type #1, or whether it supports the DMRS information supported by channel type #1; for channel type #2, the terminal reports the DMRS information it supports for channel type #2, or whether it supports the DMRS information supported by channel type #2.

[0508] The above text combined Figures 2 to 4 The terminal-side embodiments of this application are described in detail below, in conjunction with... Figure 5 The network-side embodiments of this application are described in detail below. It should be understood that the network-side embodiments correspond to the terminal-side embodiments, and similar descriptions can be found in the terminal-side embodiments.

[0509] Figure 5 This is a schematic flowchart of a method 300 for determining DMRS information according to an embodiment of this application, such as... Figure 5 As shown, the method 300 for determining DMRS information may include at least some of the following:

[0510] S310, the network-side device sends or receives at least one DMRS on the first channel;

[0511] The information in the DMRS is determined based on at least one of the following:

[0512] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0513] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0514] The first signal is used by the terminal to report information from the DMRS.

[0515] It should be understood that Figure 5 The steps or operations of method 300 for determining DMRS information are illustrated, but these steps or operations are merely examples, and other operations may be performed in this application. Figure 5 Variations of various operations within it.

[0516] In this embodiment, a network-side device transmits or receives at least one DMRS for a first channel; wherein the DMRS information is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the DMRS information; a first signaling, wherein the first signaling is used to indicate the DMRS information; and a first signal, wherein the first signal is used by the terminal to report the DMRS information. This allows for the determination of a more suitable DMRS for the first channel, and the performance of channel estimation and demodulation based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[0517] In some embodiments, the first parameter includes at least one of the following:

[0518] The data stream corresponding to the first channel;

[0519] The TB corresponding to the first channel;

[0520] The channel type corresponding to the first channel;

[0521] The scheduling type corresponding to the first channel;

[0522] The MCS corresponding to the first channel;

[0523] The transmission timing corresponding to the first channel;

[0524] The time-domain resources corresponding to the first channel;

[0525] Frequency domain resources corresponding to the first channel;

[0526] The first reference signal or the first reference channel group associated with the first channel;

[0527] The SSB-related information associated with the first channel;

[0528] The RNTI corresponding to the first channel;

[0529] The PRACH resources corresponding to the first channel;

[0530] The search space corresponding to the first channel;

[0531] The QCL relationship associated with the first channel.

[0532] In some embodiments, the first signaling includes at least one of the following:

[0533] FDRA domain;

[0534] TDRA domain;

[0535] Modulation coding domain;

[0536] Redundant version fields;

[0537] System information indication field;

[0538] TB scaling domain;

[0539] Short message indicator field;

[0540] Short message field;

[0541] DMRS information field;

[0542] DMRS information configuration fields;

[0543] Terminal identifier configuration field;

[0544] Access type configuration field;

[0545] MIB;

[0546] Layer 1 load.

[0547] In some embodiments, the short message indication field includes at least X groups of indication bits, the X groups of indication bits being used to indicate information from the DMRS, and the X groups of indication bits satisfying at least one of the following:

[0548] The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel;

[0549] The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel;

[0550] Where X, X1, and X2 are all positive integers.

[0551] In some embodiments, the short message field includes at least Y groups of indicator bits, the Y groups of indicator bits being used to indicate information of the DMRS, the Y groups of indicator bits satisfying at least one of the following:

[0552] The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel;

[0553] The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel;

[0554] Where Y, Y1, and Y2 are all positive integers.

[0555] In some embodiments, the first signal includes at least one of the following:

[0556] WUS;

[0557] PRACH signal;

[0558] SRS;

[0559] PRS;

[0560] Uplink control channel;

[0561] Uplink data channel.

[0562] In some embodiments, the DMRS information corresponds to at least one DMRS indication table;

[0563] Wherein, the DMRS indication table satisfies at least one of the following:

[0564] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter;

[0565] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication;

[0566] The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal.

[0567] Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS;

[0568] Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

[0569] In some embodiments, the at least one first channel is scheduled via a second signaling;

[0570] The second signaling includes at least one of the following:

[0571] MIB;

[0572] Layer 1 load;

[0573] RRC signaling;

[0574] MAC-CE signaling;

[0575] DCI;

[0576] PDSCH;

[0577] PUSCH;

[0578] Reference signal;

[0579] Broadcast signaling for non-serving cells;

[0580] Broadcast signaling on non-serving carriers;

[0581] Broadcast signaling for non-serving TRPs;

[0582] RAR for non-serving cells.

[0583] In some embodiments, the DMRS of the at least one first channel satisfies at least one of the following:

[0584] The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit;

[0585] The DMRS of the multiple first channels scheduled by the second signaling occupy at least one time domain unit; the DMRS of each of the multiple first channels scheduled by the second signaling occupy different time domain units; the DMRS of the multiple first channels scheduled by the second signaling form a time domain binding.

[0586] The DMRS information of the multiple first channels scheduled by the second signaling is different.

[0587] In some embodiments, the method 300 for determining DMRS information further includes:

[0588] The network-side device receives first capability information from the terminal;

[0589] The first capability information includes at least one of the following:

[0590] The terminal supports at least one DMRS configuration for transmission on at least one of the first channels;

[0591] The terminal supports applicable conditions for DMRS information transmitted on at least one of the first channels; the terminal supports the simultaneous use of at least two DMRS configurations.

[0592] The terminal supports the combination of at least two DMRS configurations used simultaneously.

[0593] The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations;

[0594] The terminal supports switching between at least two DMRS configurations.

[0595] In some embodiments, the first capability information is reported by the terminal via at least one of the following: PRACH;

[0596] WUS;

[0597] SRS;

[0598] Message 3 of the random access procedure;

[0599] Message A of the random access procedure;

[0600] Uplink control signaling;

[0601] RRC signaling;

[0602] Second signal.

[0603] In some embodiments, the reporting granularity of the first capability information includes at least one of the following:

[0604] The channel type of the first channel;

[0605] The scheduling type of the first channel;

[0606] Terminal type;

[0607] terminal;

[0608] Terminal group;

[0609] frequency band;

[0610] Frequency band group;

[0611] Application scenarios;

[0612] TRP;

[0613] TRP group;

[0614] residential community;

[0615] Community group;

[0616] carrier wave;

[0617] Carrier group;

[0618] Reference signal;

[0619] Reference signal group.

[0620] In some embodiments, the first channel includes at least one of the following:

[0621] PDSCH carrying system messages;

[0622] PDSCH carrying paging messages;

[0623] PDSCH carrying paging short messages;

[0624] PDSCH in a disconnected state;

[0625] PUSCH in a disconnected state;

[0626] The channels corresponding to relevant messages during the random access process;

[0627] Broadcast channel carrying system messages;

[0628] A multicast channel carrying multicast messages;

[0629] Common downlink control channel;

[0630] Common uplink channel;

[0631] PRACH;

[0632] The channel corresponding to the signal used to trigger the SSB to send;

[0633] The channel corresponding to the signal used to trigger SIB transmission.

[0634] In some embodiments, the DMRS information includes at least one of the following: the number of DMRS ports;

[0635] DMRS port;

[0636] DMRS symbol count;

[0637] DMRS symbol;

[0638] DMRS prefix symbol count;

[0639] DMRS prefix symbol position;

[0640] DMRS extra symbol count;

[0641] Additional symbol positions for DMRS;

[0642] CDM group;

[0643] The number of CDM groups without data reuse;

[0644] OCC index;

[0645] OOC sequence;

[0646] OCC length;

[0647] DMRS time-domain density;

[0648] DMRS frequency domain density;

[0649] DMRS configuration type;

[0650] DMRS sequence information.

[0651] The technical solution of this application is described in detail below through specific embodiments.

[0652] Example 1 details the technical solution of this application using the scheduling of the first channel as an example.

[0653] The information in the DMRS determines the DMRS pattern (also known as the DMRS mode) corresponding to the first channel, i.e., the time-frequency resources occupied by the DMRS. The DMRS pattern, in turn, determines the performance of the DMRS channel estimation, thus affecting the reliability of the first channel transmission. How to use the appropriate DMRS pattern is particularly important for scenarios such as SIB1, random access related messages (at least one of Msg 1, Msg 2, Msg 3, Msg 4, Msg 5, Msg A, and Msg B), paging messages, DCI-scheduled data channels that schedule paging messages, and data channels directly scheduled by paging messages.

[0654] Optionally, the relationship between the first channel and the second signaling that schedules the first channel satisfies one of the following:

[0655] A single second signaling can schedule a first channel; for example, a DCI can schedule a PDSCH (such as a PDSCH corresponding to a SIB1).

[0656] A single second signaling can schedule multiple first channels. For example, a DCI can schedule multiple PDSCHs or PUSCHs. In this case, multiple PDSCHs or PUSCHs can correspond to the same TB or correspond to different TBs. Another example is that a DCI can schedule at least one PDSCH and at least one PUSCH.

[0657] For example, it's easy to understand how a single second signaling can schedule a first channel; for instance, the most common example is a DCI scheduling a PDSCH or PUSCH. However, it's important to note that the second signaling can also be a data channel, such as scheduling another PDSCH or a PUSCH via a PDSCH, especially for SDT transmissions scheduled by paging. If you want the terminal to perform SDT transmissions in idle or deactivated states, one way is to trigger the data channel used for SDT transmissions via paging. For example, a DCI scheduling a paging message might schedule a paging message, which in turn schedules a PDSCH or PUSCH for SDT transmission. Furthermore, the first channel here can also support transmissions of multiple terabytes (TB), multiple layers, or multiple time slots.

[0658] For example, a single second signaling message scheduling multiple first channels can be divided into two cases: First, the multiple first channels scheduled by one second signaling message correspond to the same TB (Transmission Block), such as a DCI scheduling multiple PDSCH repetitions of the same TB; second, the multiple first channels scheduled by one second signaling message correspond to different TBs, such as a DCI scheduling two PDSCHs corresponding to different TBs, or a DCI scheduling both a PDSCH and a PUSCH. Especially for SDT (Simplified Data Transmission) scheduled by paging, if the goal is to enable SDT transmission in the idle or deactivated state, one approach is to trigger the data channel used for SDT transmission through paging. For example, a DCI scheduling paging messages schedules both the paging messages and a PDSCH or PUSCH for SDT transmission. Alternatively, a DCI scheduling paging messages may schedule a PDSCH or PUSCH for SDT transmission, which in turn schedules a PDSCH or PUSCH for SDT transmission.

[0659] It should be noted that whether scheduling one or multiple first channels for the second signaling, there may be situations where scheduling occurs across time slots or not. Therefore, the DMRS of the first channel can be enhanced accordingly for different scheduling scenarios.

[0660] Optionally, the second signaling includes, but is not limited to, at least one of the following:

[0661] MIB;

[0662] Layer 1 load;

[0663] RRC signaling;

[0664] MAC-CE signaling;

[0665] DCI, for example, paging PDCCH or SIB1 PDCCH;

[0666] PDSCH, such as paging messages, SIB1 and other system messages;

[0667] PUSCH, such as Msg3 or MsgA, idle small data transmission channels, etc.;

[0668] Reference signals, such as randomly accessed preamble, SRS, CSI-RS, TRS, PRS, SSB, WUS signals, etc.

[0669] Broadcast signaling for non-serving cells;

[0670] Broadcast signaling on non-serving carriers;

[0671] Broadcast signaling for non-serving TRPs;

[0672] RAR for non-serving cells.

[0673] The at least one first channel described in this embodiment is scheduled through the second signaling. It can also be understood or replaced as: at least one first channel is configured through the second signaling, or at least one first channel is triggered through the second signaling, or at least one first channel is activated through the second signaling.

[0674] Optionally, the first channel includes, but is not limited to, at least one of the following:

[0675] PDSCH carrying system messages;

[0676] PDSCH carrying paging messages;

[0677] PDSCH carrying paging short messages;

[0678] PDSCH in a disconnected state;

[0679] PUSCH in a disconnected state;

[0680] The channels corresponding to relevant messages during the random access process;

[0681] Broadcast channel carrying system messages;

[0682] A multicast channel carrying multicast messages;

[0683] Common downlink control channel;

[0684] Common uplink channel;

[0685] PRACH;

[0686] The channel corresponding to the signal used to trigger the SSB to send;

[0687] The channel corresponding to the signal used to trigger SIB transmission.

[0688] The non-connected state described in the embodiments of this application may include at least one of the following:

[0689] Idle state, inactive state.

[0690] It should be noted that the first channel can also be a physical channel transmitted in RRC connection state, such as PUSCH or PDSCH.

[0691] Optionally, the PDSCH carrying system messages can be a PDSCH carrying SIB1 or other SIB messages.

[0692] Optionally, the PUSCH in the disconnected state can be a dynamically scheduled PUSCH in the disconnected state, or the PUSCH in the disconnected state can be a CG PUSCH in the disconnected state.

[0693] Optionally, the channel corresponding to the relevant messages in the random access process may include, but is not limited to, at least one of the following:

[0694] Message 2 (Msg2) of the random access procedure;

[0695] Message 3 (Msg3) of the random access procedure;

[0696] Message 4 (Msg4) of the random access procedure;

[0697] Message 5 (Msg5) of the random access procedure;

[0698] Message A (Message A, MsgA) of the random access procedure;

[0699] Message B (MsgB) of the random access procedure.

[0700] It should be noted that Msg5 can be the terminal's feedback message in response to Msg4.

[0701] Optionally, the broadcast channel carrying system messages can be a PBCH.

[0702] Optionally, the common downlink control channel can be a PDCCH channel of common DCI.

[0703] Optionally, the common uplink channel can be an uplink WUS channel.

[0704] Optionally, the PRACH can be a PRACH carrying data or payload.

[0705] Whether scheduling one or multiple first channels for the second signaling, there may be situations where scheduling occurs across time slots or not. Therefore, the DMRS of the first channel can be enhanced accordingly for different scheduling scenarios.

[0706] Optionally, the DMRS of the first channel occupies at least one time slot (across time slots or within one time slot), including at least one of the following:

[0707] A DMRS of a first channel scheduled by a second signaling occupies at least one time slot. For example, a PDSCH of a DCI scheduled occupies multiple time slots, meaning that the DMRS also occupies multiple time slots.

[0708] Multiple DMRS of a second signaling scheduler occupy at least one time slot. For example, multiple repetitions of a PDSCH scheduled by a DCI scheduler occupy multiple time slots.

[0709] The DMRS of multiple first channels scheduled by a second signaling may occupy different time slots. For example, a paging message scheduled by a DCI and the corresponding PDSCH or PUSCH of an SDT transmission may be in different time slots. The DMRS of a paging message scheduled by a DCI and the corresponding PDSCH or PUSCH of an SDT transmission may be independently indicated in the DCI.

[0710] When a second signaling dispatch schedules multiple first channels, the DMRSs of these multiple first channels can form a joint bundle, thereby improving channel estimation performance. Furthermore, the number of symbols and symbol positions occupied by the DMRS corresponding to each first channel can differ, thus optimizing the DMRS within the overall bundle.

[0711] Optionally, the DMRS of multiple first channels scheduled by one or more second signaling methods shall satisfy at least one of the following relationships:

[0712] Multiple first-channel DMRSs form a bundle, and the terminal or network side can perform joint channel estimation based on the bundle;

[0713] Multiple first channel DMRSs can be different (e.g., multiple repetitions of the first channel).

[0714] This embodiment proposes that multiple first channels scheduled by multiple second signaling messages can also form DMRS bundles, thereby fully utilizing the mutual DMRS to improve channel estimation performance; the DMRS of the multiple first channels can be different, thereby optimizing the overall DMRS pattern. For example, the DMRS pre-symbol in the first PDSCH is in the third symbol of the first PDSCH, and the DMRS pre-symbol in the second PDSCH is in the first symbol of the second PDSCH, such as... Figure 3 As shown; for example, the DMRS in the first PDSCH occupies two symbols (such as the third and eighth symbols), while the DMRS in the second PDSCH only occupies one symbol (such as the first symbol), as shown. Figure 4As shown, this saves overall DMRS overhead. In other words, the application of DMRS bundling has been extended to transmission channels in connectionless states or on public resources, such as SIB1, paging, related messages of random access procedures, SDT transmission, and other scenarios.

[0715] Example 2 details the technical solution of this application using the default DMRS as an example.

[0716] In related technologies, for some fallback DCI scheduling, the DMRS of the scheduled data channels is generally the default DMRS pattern or configuration, meaning no additional signaling is required. The terminal and network sides agree on the DMRS to use under certain conditions. Therefore, if no additional indication signaling is introduced to indicate the DMRS, the design can continue based on the default DMRS approach and be enhanced accordingly. For example, in SDT scenarios, if the corresponding data load is large, more data streams need to be introduced for Multiple Input Multiple Output (MIMO) transmission. Another example is for large payloads or SIB1 transmissions with only small bandwidth, which may require scheduling transmissions across time slots (multiple time slots). In this case, a more flexible DMRS signal configuration suitable for channels with different time domain lengths needs to be considered, while also taking into account the overhead of DMRS configuration.

[0717] In some implementations, if the first channel corresponds to at least one data stream, the DMRS information associated with each data stream corresponding to the first channel can be agreed upon by default, so that the DMRS information of the first channel can be determined based on at least one data stream corresponding to the first channel.

[0718] For example, the first channel corresponds to at least one data stream, and by default, the DMRS information associated with each data stream corresponding to the first channel includes, but is not limited to, at least one of the following:

[0719] DMRS ports for each data stream;

[0720] The number of DMRS symbols used in each data stream;

[0721] The position of the DMRS prefix used by each data stream;

[0722] Additional symbols used by each data stream in the DMRS;

[0723] The FD-OCC sequence length of the DMRS used in each data stream;

[0724] The DMRS sequence generation parameters used by each data stream, such as sequence generation initialization parameters.

[0725] In some implementations, the first parameter includes the TB corresponding to the first channel. The DMRS information associated with the TB corresponding to the first channel can be predefined by default, thus allowing the DMRS information of the first channel to be determined based on the TB corresponding to the first channel. Specifically, for example, different predefined DMRS information can be used when the TB corresponding to the first channel is different.

[0726] In some implementations, if the first channel corresponds to at least two TBs, the DMRS information associated with each TB corresponding to the first channel can be agreed upon by default, so that the DMRS information of the first channel can be determined based on the at least two TBs corresponding to the first channel.

[0727] For example, the first channel corresponds to at least one TB, and by default, the DMRS information associated with each TB corresponding to the first channel includes, but is not limited to, at least one of the following:

[0728] DMRS ports on each TB;

[0729] The number of DMRS symbols used on each TB;

[0730] The position of the DMRS prefix used on each TB;

[0731] Additional symbols for DMRS used on each TB;

[0732] The FD-OCC sequence length of the DMRS used on each TB;

[0733] The DMRS sequence generation parameters used on each TB, such as sequence generation initialization parameters.

[0734] Optionally, the DMRS of the first channel can be related to the number of data streams or transport blocks. For example, when the number of data streams or transport blocks corresponding to the first channel is different, different DMRS conventions can be used.

[0735] For example, when the number of data streams corresponding to the first channel is 1, the default convention is to associate the data streams corresponding to the first channel with DMRS pattern #1; when the number of data streams corresponding to the first channel is 2, the default convention is to associate the data streams corresponding to the first channel with DMRS pattern #2.

[0736] For example, when the number of data streams corresponding to the first channel is 1, it is by default agreed that the data stream corresponding to the first channel is associated with a DMRS with an FD-OCC length of mode #1 (e.g., FD-OCC length of 1); when the number of data streams is 2, it is by default agreed that the data stream corresponding to the first channel is associated with a DMRS with an FD-OCC length of mode #2 (e.g., FD-OCC length of 2). When performing channel estimation, the terminal or network side can adjust the channel estimation algorithm accordingly to improve the channel estimation performance.

[0737] It can also be pre-defined that different default DMRS correspond to different types of the first channel.

[0738] Optionally, the DMRS of the first channel can be determined based on the channel type of the first channel. For example, different default DMRS can be used when the channel type of the first channel is different. For instance, the DMRS agreed upon by SIB1 is different from the predetermined DMRS of the data channel corresponding to SDT transmission.

[0739] It can also be pre-defined that when the MCS of the first channel is different, it corresponds to different default DMRS.

[0740] Optionally, the DMRS of the first channel can be related to the MCS of the first channel. For example, when the MCS of the first channel is different, different DMRS can be used. For instance, for the first channel with a higher MCS, more DMRS resources (e.g., more DMRR symbols) can be used to ensure its transmission performance; conversely, for the first channel with a lower MCS, more DMRS resources can be used to further ensure its transmission reliability.

[0741] For the same first channel, the corresponding DMRS may be different when the first channel is transmitted at different transmission times (e.g., time slots). Alternatively, if the first channel is associated with different QCL relationships, its corresponding DMRS may also be different.

[0742] Optionally, the DMRS of the first channel is related to the transmission time of the first channel, satisfying at least one of the following:

[0743] At least for a portion of the transmission time, the DMRS of the first channel is different. For example, during transmission time #1 of the first channel, the DMRS is pattern #1, and during transmission time #2 of the first channel, the DMRS is pattern #2.

[0744] For multi-slot data transmission channels (such as TBoMS), the DMRS on different slots can be the same or different, or the DMRS pattern depends on the number of slots or the slot number.

[0745] Optionally, the DMRS of the first channel is related to the spatial relationship associated with the first channel, satisfying:

[0746] The DMRS of the first channel differs for at least some different spatial relationships / beams; for example, the DMRS of the first channel transmitted on beam #1 is pattern #1, and the DMRS of the first channel transmitted on beam #2 is pattern #2. Here, spatial relationship can also be understood as the spatial relationship corresponding to the reference signal / reference signal group (e.g., SSB / SSB group).

[0747] If the network transmits multiple SSB beams, with different SSBs covering different areas—for example, some SSBs cover building scenarios (where UEs move slowly), while others cover elevated bridge scenarios (where UEs move quickly)—then different DMRS patterns can be assigned to the first channels associated with different SSBs (e.g., SIB1, paging, etc.) to handle UEs in different scenarios and improve transmission performance. Since the transmission timing of the first channels associated with different SSBs may differ, it can also be understood that the DMRS of the first channels differs at at least some transmission times.

[0748] Example 3 details the technical solution of this application using the network-side indication DMRS as an example.

[0749] Unlike the default DMRS convention in Embodiment 2 above, if a more flexible DMRS application is desired, additional signaling can be used to indicate DMRS, thereby addressing different needs. The DMRS indication methods for SIB1, random process-related messages, paging messages, data channels scheduled by paging messages, and data channels scheduled by DCI for paging messages will be explained below.

[0750] For SIB1, in related technologies, SIB1 is indicated through CORESET#0. However, the DCI format 1_0 in CORESET#0 does not specifically indicate the DMRS; instead, it defaults to the DMRS used by SIB1. Therefore, for SIB1 with larger data loads in the future, or for SIB1 in different scenarios, its DMRS information can be further indicated through signaling.

[0751] In some implementations, the DMRS information of SIB1 can be indicated by a first DCI indication field, wherein the first DCI indication field includes at least one of the following:

[0752] FDRA domains, for example, SIB1 occupies different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0753] TDRA fields, for example, SIB1 occupies different symbols corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0754] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0755] Redundant version domains, for example, different redundant versions correspond to different DMRS. When the number of retransmissions reaches a certain threshold, or when using a feature-specific redundant version, the corresponding DMRS can consume more resources, thereby improving retransmission performance.

[0756] System information indication fields, for example, when the indication is SIB1, use a different DMRS than other SIBx;

[0757] The DMRS information field is used to indicate the DMRS information of SIB1. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0758] It should be noted that for the PUSCH or PDSCH in the relevant messages during the random access process (such as at least one of Msg2, Msg3, Msg4, Msg5, MsgA, and MsgB), the DMRS information needs to be indicated.

[0759] In some implementations, the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access procedure can be indicated by at least one of the following:

[0760] Indications are made through preambles, for example, a specific preamble or preamble group is associated with a specific DMRS;

[0761] Indications are made through ROs, for example, a specific RO or group of ROs is associated with a specific DMRS;

[0762] Indications are made via RA-RNTI; for example, a specific RA-RNTI is associated with a specific DMRS.

[0763] FDRA domains, for example, PUSCH or PDSCH in relevant messages during random access procedures occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0764] TDRA domain, for example, PUSCH or PDSCH in relevant messages during random access process occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0765] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0766] TB scaling domains, for example, different DMRS for different TB size ranges;

[0767] The DMRS information field is used to indicate the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access process. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0768] The search space corresponding to PUSCH or PDSCH in the relevant messages during the random access process; for example, different search spaces are associated with different DMRS.

[0769] It should be noted that the DMRS used for paging messages in related technologies is also the default convention, and therefore can be enhanced accordingly. In some implementations, the DMRS information of the paging message can be indicated by a second DCI indicator field, which includes at least one of the following:

[0770] The Short Message Indicator (SMI) field indicates different DMRS information depending on the specific bit it indicates. For example, when the SMI field indicates bit 00, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the paging message is pattern #2. When the SMI field indicates bit 01, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the paging message is pattern #1. When the SMI field indicates bit 10, it is unrelated to the DMRS of the paging message, or it can be understood as not requiring DMRS indication. When the SMI field indicates bit 11, the DMRS of the paging message is pattern #1, or DMRS is pattern #2, or DMRS is pattern #3 (which can be combined with other second DCI indicator fields for joint indication).

[0771] In the short message field, when the short message indicator field indicates a specific bit, the corresponding DMRS information is different; for example, bit 0: corresponds to DMRS pattern #1, bit 1: corresponds to DMRS pattern #2, bit 2: corresponds to DMRS pattern #3, ..., bit 8: corresponds to DMRS pattern #8;

[0772] FDRA domains, for example, PUSCH or PDSCH in relevant messages during random access procedures occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0773] TDRA domain, for example, PUSCH or PDSCH in relevant messages during random access process occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0774] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0775] TB scaling domains, for example, different DMRS for different TB size ranges;

[0776] The DMRS information field is used to indicate the DMRS information of the PUSCH or PDSCH in the relevant messages during the random access process. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0777] It should be noted that SDT transmission for paging message scheduling can be divided into two cases: the first is that SDT transmission is scheduled by the DCI that schedules paging messages; the second is that SDT transmission is scheduled by paging messages (i.e., PDSCH).

[0778] In some implementations, for cases where SDT transmissions are scheduled by the DCI that schedules paging messages, the DMRS of the corresponding PDSCH or PUSCH for the SDT transmission can be indicated by a third DCI indication field, wherein the third DCI indication field includes at least one of the following:

[0779] The Short Message Indicator (SMI) field indicates different DMRS information depending on the specific bit it indicates. For example, when the SMI field indicates bit 00, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #2. When the SMI field indicates bit 01, it indicates that only paging scheduling information exists in the DCI, and the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #1. When the SMI field indicates bit 10, it can be used to indicate the DMRS of the corresponding PDSCH or PUSCH for SDT transmission, for example, pattern #3. When the SMI field indicates bit 11, the DMRS of the corresponding PDSCH or PUSCH for SDT transmission is pattern #1, or pattern 2, or pattern 3, or pattern #4 (which can be combined with other third DCI indicator fields for joint indication).

[0780] The short message field corresponds to different DMRS information when it indicates a specific bit; for example, bit 0 corresponds to DMRS pattern #1, bit 1 corresponds to DMRS pattern #2, bit 2 corresponds to DMRS pattern #3, ..., bit 8 corresponds to DMRS pattern #8.

[0781] FDRA domains, for example, the PDSCH or PUSCH corresponding to SDT transmissions occupy different frequency domain resources, corresponding to different DMRS frequency domain densities or different DMRS frequency domain resource overheads;

[0782] TDRA domains, for example, the PDSCH or PUSCH corresponding to SDT transmissions occupy different symbols, corresponding to different DMRS symbol numbers and / or different DMRS symbol positions;

[0783] Modulation coding domain, for example, different MCS index ranges correspond to different DMRS;

[0784] TB scaling domains, for example, different DMRS for different TB size ranges;

[0785] The DMRS information field is used to indicate the DMRS information of the corresponding PDSCH or PUSCH transmitted by SDT. For example, each indication in the DMRS information field corresponds to a set of DMRS information in the default DMRS indication table.

[0786] Paging time-domain resources, such as determining specific DMRS for a specific paging period or paging detection occasion;

[0787] Paging frequency domain resources, the reference signal or reference signal group associated with Paging, such as different reference signals corresponding to different paging PDSCH can use specific DMRS configurations.

[0788] It should be noted that when the DCI that schedules paging messages schedules both the PDSCH of the paging messages and the PDSCH or PUSCH corresponding to the SDT transmission, the DMRS of the two can be jointly indicated or separately indicated.

[0789] In some implementations, for cases where SDT transmissions are scheduled by the DCI that schedules paging messages, the DMRS information of the PDSCH indicating the paging message and the DMRS information of the PDSCH or PUSCH corresponding to the SDT transmission can be combined in the following way:

[0790] The short message indication field, for example, some indications in the short message indication field correspond to the DMRS information of the PDSCH of the paging message, and some indications correspond to the DMRS information of the PDSCH or PUSCH of the SDT transmission; for another example, some indications in the short message indication field correspond to both the DMRS information of the PDSCH of the paging message and the DMRS information of the PDSCH or PUSCH of the SDT transmission.

[0791] Short message field, for example, some indications in the short message field correspond to the DMRS information of the PDSCH of the paging message, and some indications correspond to the DMRS information of the PDSCH or PUSCH corresponding to the SDT transmission.

[0792] In some implementations, it can be agreed by default that the PDSCH and SDT transmissions of paging messages use the same DMRS information for their corresponding PDSCH or PUSCH.

[0793] In some implementations, when the SDT transmission is scheduled by a paging message (i.e., PDSCH), the DMRS information of the corresponding PDSCH or PUSCH for the SDT transmission can be indicated through a first paging message field, wherein the first paging message field includes at least one of the following:

[0794] The DMRS information configuration field is used to configure DMRS information. For example, the DMRS information configuration field is configured in the PagingRecord parameter.

[0795] The terminal identifier configuration field is used to configure the terminal identifier. Different terminal identifier ranges can correspond to different DMRS information.

[0796] The access type configuration field is used to configure the access type. Different access types correspond to different DMRS information. For example, the DMRS corresponding to an idle terminal is pattern #1, and the DMRS corresponding to a deactivated terminal is pattern #2.

[0797] In addition to the fields in the paging message, the DMRS information of the corresponding PDSCH or PUSCH in the SDT transmission can also be implicitly indicated through the PDSCH related information in the paging message, such as the time and frequency resources of the PDSCH in the paging message, DMRS information, etc. However, this information can be deduced through the TDRA, FDRA and other information in the DCI of the scheduling paging message, so it can also be understood as being indicated by the DCI of the scheduling paging message.

[0798] In some implementations, besides indicating DMRS information through DCI or paging as mentioned above, DMRS can also be indicated using some common information for all the aforementioned situations. For example, the DMRS information of the first channel can be determined using the following information:

[0799] MIB;

[0800] L1-payload uses specific bits to indicate DMRS information;

[0801] SSB-related information, including PSS or SSS, PBCH DMRS, and SSB index; for example, the sequence of PSS or SSS, the number of PSS or SSS, the length of PSS or SSS, the time-domain or frequency-domain offset of PSS or SSS, and the time-domain interval between PSS and SSS; for example, the sequence of DMRS, the length of DMRS, and the time-domain or frequency-domain offset of DMRS.

[0802] Paging time-domain resources, such as determining specific DMRS for a specific paging period or paging detection actual (monitoring occasion);

[0803] Paging frequency domain resources;

[0804] The reference signal or reference signal group associated with paging, such as the pagingPDSCH corresponding to different reference signals, can use a specific DMRS configuration.

[0805] The aforementioned information can also be used in conjunction with the DCI or paging message for scheduling the first channel to provide a combined indication. For example, the information above may indicate some DMRS parameters, while the DCI or paging message for scheduling the first channel may indicate other parameters, thus forming a complete DMRS information indication.

[0806] In some implementations, the DMRS information of the first channel is requested or reported by at least one of the following:

[0807] WUS;

[0808] PRACH signal;

[0809] SRS;

[0810] PRS;

[0811] Uplink control information;

[0812] Uplink data channel.

[0813] Example 4 details the technical solution of this application using a DMRS indicator table as an example.

[0814] When the parameters of the first channel are relatively limited, its corresponding DMRS does not need to be very flexible. Furthermore, considering saving indication overhead, the DMRS information of the first channel can be predefined, for example, by predefining at least one DMRS indication table. This allows for the indication or reporting of DMRS information with minimal indication overhead, or simplifies the association between the first parameter and the DMRS information.

[0815] Optionally, the DMRS information corresponds to at least one DMRS instruction table;

[0816] Wherein, the DMRS indication table satisfies at least one of the following:

[0817] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter;

[0818] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication;

[0819] The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal.

[0820] Optionally, different DMRS indication tables may correspond to first channels of different channel types, or different DMRS indication tables may correspond to different types of DMRS;

[0821] Optionally, each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

[0822] Optionally, the information of each group of DMRS in the DMRS indication table corresponds to the same DMRS symbol.

[0823] In this embodiment, the terminal can determine the DMRS information of the first channel from at least one DMRS indication table based on at least one of the first parameter, the first signaling, and the first signal.

[0824] Optionally, the information for each group of DMRS in the DMRS indicator table can be the information for each group of DMRS in the DMRS indicator table (e.g., each row of the DMRS indicator table).

[0825] In some implementations, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first parameter. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first parameter. Similarly, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first signaling indication. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first signaling indication. Similarly, the information in each group of DMRS in the DMRS indication table corresponds to different cases of the first signal reporting. This can be understood as: the information in each group of DMRS in the DMRS indication table corresponds to different values, different selections, or different types of the first signal reporting.

[0826] Optionally, at least one DMRS indicator table can be predefined, wherein the DMRS indicator table includes DMRS information in at least two dimensions.

[0827] Optionally, different channel types of the first channel correspond to different DMRS indication tables, or different scheduling types of the first channel correspond to different DMRS indication tables, or different terminal capabilities supported by the terminal for different DMRS types correspond to different DMRS indication tables.

[0828] In some implementations, assuming that the indicator bits in a certain DCI indicator field (e.g., the first, second, or third DCI indicator field) are x bits, a DMRS indicator table with no more than log2(x) rows can be defined. Assuming the DCI bit overhead available for DMRS indication is 3 bits, at most 8 DMRS patterns can be indicated for transmission on the first channel. Assuming the number of data streams corresponding to the first channel is 1 by default, an example of a DMRS indicator table can be shown in Table 1 above.

[0829] In Table 1 above, since the default first channel's PDSCH or PUSCH supports a maximum of one stream, it corresponds to DMRS port 0 or 1, or other numbers, such as 1000 or 1001, which will not be elaborated here. Furthermore, the DMRS indicator table can indicate different DMRS configuration types suitable for different latency scenarios, such as scenarios with varying multipath latency.

[0830] In some implementations, assuming that the indicator bits corresponding to a certain DCI indicator field (such as the first, second, or third DCI indicator field) are x bits, a DMRS indicator table with no more than log2(x) rows can be defined. Assuming the DCI bit overhead available for DMRS indication is 3 bits, at most 8 DMRS patterns can be indicated for transmission on the first channel. Assuming the first channel corresponds to a default of 2 data streams, and a certain DMRS configuration type is used by default, an example of a DMRS indicator table can be shown in Table 2 above.

[0831] In Table 2 above, the PDSCH or PUSCH of the first channel supports a maximum of 2 streams, thus corresponding to a maximum of two DMRS ports. At the same time, the case of multiple users multiple-in multiple-out (MU-MIMO) is taken into consideration, so multiple pairs of orthogonal ports are configured. In addition, depending on the mobile speed, DMRS with indices 0-3 can be indicated at low speeds, and DMRS with indices 4-7 can be indicated at high speeds.

[0832] Example 5 details the technical solution of this application by taking the terminal's ability to report DMRS configuration-related capabilities as an example.

[0833] Optionally, the terminal reports the first capability information;

[0834] The first capability information includes, but is not limited to, at least one of the following:

[0835] The terminal supports at least one DMRS configuration for transmission on at least one of the first channels;

[0836] The applicable conditions for the information of at least one of the first channels supported by the terminal for transmission of DMRS.

[0837] The terminal supports the simultaneous use of at least two DMRS configurations;

[0838] The terminal supports the combination of at least two DMRS configurations used simultaneously.

[0839] The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations;

[0840] The terminal supports switching between at least two DMRS configurations.

[0841] In this embodiment, the terminal reports first capability information, so that the network-side device can know the DMRS configuration supported by the terminal. The network-side device can configure or indicate the DMRS information of the first channel for terminals that support different DMRS configuration capabilities, or determine the corresponding DMRS information for a specific one or more first channel transmissions.

[0842] Optionally, the applicable conditions for the DMRS information supported by the terminal for transmission over at least one of the first channels include at least one of the following:

[0843] The terminal supports the frequency bands supported by DMRS information for transmission on at least one of the first channels.

[0844] The power consumption or energy level applicable to the DMRS information supported by the terminal for transmission of at least one of the first channels;

[0845] The reliability of the DMRS information supported by the terminal for transmission over at least one of the first channels;

[0846] The terminal supports the applicable delay for DMRS information transmitted on at least one of the first channels.

[0847] It should be noted that the applicable conditions for the DMRS information supported by the terminal for transmission of at least one of the first channels can also be replaced by the applicable KPIs for the DMRS information supported by the terminal for transmission of at least one of the first channels. This application does not limit this.

[0848] The terminal reporting the first capability information described in this embodiment can be replaced by: the terminal indicating the first capability information, or the terminal requesting the first capability information. This application does not limit this.

[0849] Optionally, the terminal reports the first capability information, including:

[0850] The terminal reports the first capability information through at least one of the following:

[0851] PRACH, for example, PRACH can be MsgA PRACH or Msg 1PRACH;

[0852] WUS;

[0853] SRS;

[0854] Message 3 of the random access procedure, for example, reporting the first capability information through the resources of Msg3 PUSCH, or reporting the first capability information through the information carried by Msg3 PUSCH, or reporting the first capability information through the bits of Msg3 PUSCH;

[0855] Message A in the random access procedure, for example, reporting first capability information through resources of MsgA PUSCH, or reporting first capability information through information carried by MsgA PUSCH, or reporting first capability information through bits of MsgA PUSCH;

[0856] Uplink control signaling, such as UCI;

[0857] RRC signaling, for example, connected terminals can report first capability information through RRC signaling;

[0858] The second signal, for example, is a specific signal that is defined separately.

[0859] In some implementations, the terminal reports the first capability information via PRACH, including at least one of the following:

[0860] The terminal reports the first capability information via a PRACH transmission window.

[0861] The terminal reports the first capability information through a specific RO;

[0862] The terminal reports the first capability information via a specific PRACH preamble;

[0863] The terminal reports the first capability information by combining at least one of a specific RO and a specific PRACH preamble with other features to obtain a PRACH resource corresponding to the feature combination.

[0864] In some implementations, the terminal reports the corresponding DMRS information supported by the terminal through different transmission time windows of at least one of PRACH, WUS, SRS, message 3 of the random access procedure, message A of the random access procedure, uplink control signaling, RRC signaling, and a second signal. For example, when all uplink and downlink signals transmitted through RIS and uplink and downlink signals not transmitted through RIS have different time windows, the network side can determine that the terminal transmitting the WUS signal has DMRS information corresponding to the target signal channel of that time window based on the specific uplink signal (such as the WUS signal) received in the different time windows.

[0865] In some embodiments, the reporting granularity of the first capability information includes, but is not limited to, at least one of the following:

[0866] The channel type of the first channel;

[0867] The scheduling type of the first channel;

[0868] Terminal type;

[0869] terminal;

[0870] Terminal group;

[0871] frequency band;

[0872] Frequency band group;

[0873] Application scenarios;

[0874] TRP;

[0875] TRP group;

[0876] residential community;

[0877] Community group;

[0878] carrier wave;

[0879] Carrier group;

[0880] Reference signals, for example, reference signals selected or associated by the terminal for determining relevant resources for transmission on the first channel;

[0881] Reference signal group, for example, the reference signal group in which the terminal selects or associates the reference signal for determining the relevant resources for the first channel transmission.

[0882] It should be noted that each reporting granularity corresponds to the reporting of one type of first capability information. For example, when corresponding to the channel type of the first channel, each channel type corresponds to the reporting of one type of first capability information, or it can be understood that different channel types correspond to different reporting of first capability information. Specifically, for channel type #1, the terminal reports the DMRS information it supports for channel type #1, or whether it supports the DMRS information supported by channel type #1; for channel type #2, the terminal reports the DMRS information it supports for channel type #2, or whether it supports the DMRS information supported by channel type #2.

[0883] The DMRS information determination method provided in this application can be executed by a DMRS information determination device. This application uses the example of a DMRS information determination device executing the DMRS information determination method to illustrate the DMRS information determination device provided in this application.

[0884] This application provides a device for determining DMRS information. As an example, the device for determining DMRS information can be a communication device or a component in a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0885] The device for determining DMRS information includes a receiving module, a transmitting module, and a processing module. These modules 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 a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), an Artificial Intelligence (AI) processor, a Graphics Processing Unit (GPU), an Application Specific Integrated Circuit (ASIC), a Network Processor (NP), a Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: a transceiver, pins, circuits, a bus, and a radio frequency unit.

[0886] For details, see Figure 6 When the device for determining DMRS information is a terminal or a component in a terminal, the device for determining DMRS information 400 includes a first transmitting module 401 and a first receiving module 402.

[0887] The first transmitting module 401 is used to transmit at least one demodulation reference signal (DMRS) of a first channel, or the first receiving module 402 is used to receive at least one DMRS of a first channel.

[0888] The information in the DMRS is determined based on at least one of the following:

[0889] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[0890] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[0891] A first signal, wherein the first signal is used by the DMRS information determining device 400 to report the DMRS information.

[0892] In some embodiments, the first parameter includes at least one of the following:

[0893] The data stream corresponding to the first channel;

[0894] The transport block TB corresponding to the first channel;

[0895] The channel type corresponding to the first channel;

[0896] The scheduling type corresponding to the first channel;

[0897] The modulation and coding scheme (MCS) corresponding to the first channel;

[0898] The transmission timing corresponding to the first channel;

[0899] The time-domain resources corresponding to the first channel;

[0900] Frequency domain resources corresponding to the first channel;

[0901] The first reference signal or the first reference channel group associated with the first channel;

[0902] The synchronization signal block (SSB) related information associated with the first channel;

[0903] The first channel corresponds to the Radio Network Temporary Identifier (RNTI).

[0904] The physical random access channel (PRACH) resource corresponding to the first channel;

[0905] The search space corresponding to the first channel;

[0906] The quasi-co-address QCL relationship associated with the first channel.

[0907] In some embodiments, the first signaling includes at least one of the following:

[0908] Frequency domain resource allocation FDRA domain;

[0909] Time-Domain Resource Allocation (TDRA) domain;

[0910] Modulation coding domain;

[0911] Redundant version fields;

[0912] System information indication field;

[0913] TB scaling domain;

[0914] Short message indicator field;

[0915] Short message field;

[0916] DMRS information field;

[0917] DMRS information configuration fields;

[0918] Terminal identifier configuration field;

[0919] Access type configuration field;

[0920] Master Information Block (MIB);

[0921] Layer 1 load.

[0922] In some embodiments, the short message indication field includes at least X groups of indication bits, the X groups of indication bits being used to indicate information from the DMRS, and the X groups of indication bits satisfying at least one of the following:

[0923] The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel;

[0924] The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel;

[0925] Where X, X1, and X2 are all positive integers.

[0926] In some embodiments, the short message field includes at least Y groups of indicator bits, the Y groups of indicator bits being used to indicate information of the DMRS, the Y groups of indicator bits satisfying at least one of the following:

[0927] The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel;

[0928] The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel;

[0929] Where Y, Y1, and Y2 are all positive integers.

[0930] In some embodiments, the first signal includes at least one of the following:

[0931] Wake-up signal WUS;

[0932] PRACH signal;

[0933] Detection Reference Signal (SRS);

[0934] Positioning reference signal PRS;

[0935] Uplink control channel;

[0936] Uplink data channel.

[0937] In some embodiments, the DMRS information corresponds to at least one DMRS indication table;

[0938] Wherein, the DMRS indication table satisfies at least one of the following:

[0939] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter;

[0940] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication;

[0941] The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal.

[0942] Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS;

[0943] Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

[0944] In some embodiments, the at least one first channel is scheduled via a second signaling;

[0945] The second signaling includes at least one of the following:

[0946] MIB;

[0947] Layer 1 load;

[0948] Radio Resource Control (RRC) signaling;

[0949] Media Access Control Unit (MAC-CE) signaling;

[0950] Downlink Control Information (DCI);

[0951] Physical Downlink Shared Channel (PDSCH);

[0952] Physical Uplink Shared Channel (PUSCH);

[0953] Reference signal;

[0954] Broadcast signaling for non-serving cells;

[0955] Broadcast signaling on non-serving carriers;

[0956] Broadcast signaling from a non-service transmit / receive point (TRP);

[0957] Random Access Response (RAR) for non-serving cells.

[0958] In some embodiments, the DMRS of the at least one first channel satisfies at least one of the following:

[0959] The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit;

[0960] The DMRS of multiple first channels scheduled by the second signaling occupy at least one time domain unit;

[0961] The DMRS of the multiple first channels scheduled by the second signaling occupies different time domain units;

[0962] The DMRS of multiple first channels scheduled by the second signaling form a time-domain binding;

[0963] The DMRS information of the multiple first channels scheduled by the second signaling is different.

[0964] In some embodiments, the first sending module 401 is further configured to report first capability information;

[0965] The first capability information includes at least one of the following:

[0966] The DMRS information determination device 400 supports at least one DMRS configuration for transmission of at least one of the first channels;

[0967] The DMRS information determining device 400 supports applicable conditions for DMRS information transmitted on at least one of the first channels.

[0968] The DMRS information determination device 400 supports the simultaneous use of at least two DMRS configurations;

[0969] The DMRS information determining device 400 supports the combination of information from at least two DMRS configurations used simultaneously.

[0970] The DMRS information determination device 400 supports receiving or transmitting the first channel based on at least two DMRS configurations;

[0971] The DMRS information determination device 400 supports switching between at least two DMRS configurations. In some embodiments, the first sending module 401 is specifically used for:

[0972] Report the first capability information by at least one of the following:

[0973] PRACH;

[0974] WUS;

[0975] SRS;

[0976] Message 3 of the random access procedure;

[0977] Message A of the random access procedure;

[0978] Uplink control signaling;

[0979] RRC signaling;

[0980] Second signal.

[0981] In some embodiments, the reporting granularity of the first capability information includes at least one of the following:

[0982] The channel type of the first channel;

[0983] The scheduling type of the first channel;

[0984] Terminal type;

[0985] terminal;

[0986] Terminal group;

[0987] frequency band;

[0988] Frequency band group;

[0989] Application scenarios;

[0990] TRP;

[0991] TRP group;

[0992] residential community;

[0993] Community group;

[0994] carrier wave;

[0995] Carrier group;

[0996] Reference signal;

[0997] Reference signal group.

[0998] In some embodiments, the first channel includes at least one of the following:

[0999] PDSCH carrying system messages;

[1000] PDSCH carrying paging messages;

[1001] PDSCH carrying paging short messages;

[1002] PDSCH in a disconnected state;

[1003] PUSCH in a disconnected state;

[1004] The channels corresponding to relevant messages during the random access process;

[1005] Broadcast channel carrying system messages;

[1006] A multicast channel carrying multicast messages;

[1007] Common downlink control channel;

[1008] Common uplink channel;

[1009] PRACH;

[1010] The channel corresponding to the signal used to trigger the SSB to send;

[1011] The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

[1012] In some embodiments, the information of the DMRS includes at least one of the following:

[1013] Number of DMRS ports;

[1014] DMRS port;

[1015] DMRS symbol count;

[1016] DMRS symbol;

[1017] DMRS prefix symbol count;

[1018] DMRS prefix symbol position;

[1019] DMRS extra symbol count;

[1020] Additional symbol positions for DMRS;

[1021] Code Division Multiplexing (CDM) groups;

[1022] The number of CDM groups without data reuse;

[1023] Orthogonal Covering Code (OCC) Index;

[1024] OOC sequence;

[1025] OCC length;

[1026] DMRS time-domain density;

[1027] DMRS frequency domain density;

[1028] DMRS configuration type;

[1029] DMRS sequence information.

[1030] In the embodiments of this application, a terminal transmits or receives at least one DMRS for a first channel; wherein the information of the DMRS is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the information of the DMRS; a first signaling, wherein the first signaling is used to indicate the information of the DMRS; and a first signal, wherein the first signal is used by the terminal to report the information of the DMRS. This allows for the determination of a suitable DMRS for the first channel, and the performance of channel estimation and demodulation of the first channel based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[1031] For details, see Figure 7 When the device for determining DMRS information is a network-side device or a component in a network-side device, the device for determining DMRS information 500 includes a second sending module 501 and a second receiving module 502.

[1032] The second transmitting module 501 is used to transmit at least one demodulation reference signal (DMRS) of the first channel, or the second receiving module 502 is used to receive at least one DMRS of the first channel;

[1033] The information in the DMRS is determined based on at least one of the following:

[1034] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[1035] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[1036] The first signal is used by the terminal to report information from the DMRS.

[1037] In some embodiments, the first parameter includes at least one of the following:

[1038] The data stream corresponding to the first channel;

[1039] The transport block TB corresponding to the first channel;

[1040] The channel type corresponding to the first channel;

[1041] The scheduling type corresponding to the first channel;

[1042] The modulation and coding scheme (MCS) corresponding to the first channel;

[1043] The transmission timing corresponding to the first channel;

[1044] The time-domain resources corresponding to the first channel;

[1045] Frequency domain resources corresponding to the first channel;

[1046] The first reference signal or the first reference channel group associated with the first channel;

[1047] The synchronization signal block (SSB) related information associated with the first channel;

[1048] The first channel corresponds to the Radio Network Temporary Identifier (RNTI).

[1049] The physical random access channel (PRACH) resource corresponding to the first channel;

[1050] The search space corresponding to the first channel;

[1051] The quasi-co-address QCL relationship associated with the first channel.

[1052] In some embodiments, the first signaling includes at least one of the following:

[1053] Frequency domain resource allocation FDRA domain;

[1054] Time-Domain Resource Allocation (TDRA) domain;

[1055] Modulation coding domain;

[1056] Redundant version fields;

[1057] System information indication field;

[1058] TB scaling domain;

[1059] Short message indicator field;

[1060] Short message field;

[1061] DMRS information field;

[1062] DMRS information configuration fields;

[1063] Terminal identifier configuration field;

[1064] Access type configuration field;

[1065] Master Information Block (MIB);

[1066] Layer 1 load.

[1067] In some embodiments, the short message indication field includes at least X groups of indication bits, the X groups of indication bits being used to indicate information from the DMRS, and the X groups of indication bits satisfying at least one of the following:

[1068] The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel;

[1069] The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel;

[1070] Where X, X1, and X2 are all positive integers.

[1071] In some embodiments, the short message field includes at least Y groups of indicator bits, the Y groups of indicator bits being used to indicate information of the DMRS, the Y groups of indicator bits satisfying at least one of the following:

[1072] The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel;

[1073] The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel;

[1074] Where Y, Y1, and Y2 are all positive integers.

[1075] In some embodiments, the first signal includes at least one of the following:

[1076] Wake-up signal WUS;

[1077] PRACH signal;

[1078] Detection Reference Signal (SRS);

[1079] Positioning reference signal PRS;

[1080] Uplink control channel;

[1081] Uplink data channel.

[1082] In some embodiments, the DMRS information corresponds to at least one DMRS indication table;

[1083] Wherein, the DMRS indication table satisfies at least one of the following:

[1084] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter;

[1085] The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication;

[1086] The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal.

[1087] Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS;

[1088] Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

[1089] In some embodiments, the at least one first channel is scheduled via a second signaling;

[1090] The second signaling includes at least one of the following:

[1091] MIB;

[1092] Layer 1 load;

[1093] Radio Resource Control (RRC) signaling;

[1094] Media Access Control Unit (MAC-CE) signaling;

[1095] Downlink Control Information (DCI);

[1096] Physical Downlink Shared Channel (PDSCH);

[1097] Physical Uplink Shared Channel (PUSCH);

[1098] Reference signal;

[1099] Broadcast signaling for non-serving cells;

[1100] Broadcast signaling on non-serving carriers;

[1101] Broadcast signaling from a non-service transmit / receive point (TRP);

[1102] Random Access Response (RAR) for non-serving cells.

[1103] In some embodiments, the DMRS of the at least one first channel satisfies at least one of the following:

[1104] The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit;

[1105] The DMRS of the multiple first channels scheduled by the second signaling occupy at least one time domain unit; the DMRS of each of the multiple first channels scheduled by the second signaling occupy different time domain units; the DMRS of the multiple first channels scheduled by the second signaling form a time domain binding.

[1106] The DMRS information of the multiple first channels scheduled by the second signaling is different.

[1107] In some embodiments, the second receiving module 502 is configured to receive first capability information from the terminal; wherein the first capability information includes at least one of the following:

[1108] The terminal supports at least one DMRS configuration for transmission on at least one of the first channels;

[1109] The terminal supports applicable conditions for DMRS information transmitted on at least one of the first channels; the terminal supports the simultaneous use of at least two DMRS configurations.

[1110] The terminal supports the combination of at least two DMRS configurations used simultaneously.

[1111] The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations;

[1112] The terminal supports switching between at least two DMRS configurations.

[1113] In some embodiments, the first capability information is reported by the terminal via at least one of the following: PRACH;

[1114] WUS;

[1115] SRS;

[1116] Message 3 of the random access procedure;

[1117] Message A of the random access procedure;

[1118] Uplink control signaling;

[1119] RRC signaling;

[1120] Second signal.

[1121] In some embodiments, the reporting granularity of the first capability information includes at least one of the following:

[1122] The channel type of the first channel;

[1123] The scheduling type of the first channel;

[1124] Terminal type;

[1125] terminal;

[1126] Terminal group;

[1127] frequency band;

[1128] Frequency band group;

[1129] Application scenarios;

[1130] TRP;

[1131] TRP group;

[1132] residential community;

[1133] Community group;

[1134] carrier wave;

[1135] Carrier group;

[1136] Reference signal;

[1137] Reference signal group.

[1138] In some embodiments, the first channel includes at least one of the following:

[1139] PDSCH carrying system messages;

[1140] PDSCH carrying paging messages;

[1141] PDSCH carrying paging short messages;

[1142] PDSCH in a disconnected state;

[1143] PUSCH in a disconnected state;

[1144] The channels corresponding to relevant messages during the random access process;

[1145] Broadcast channel carrying system messages;

[1146] A multicast channel carrying multicast messages;

[1147] Common downlink control channel;

[1148] Common uplink channel;

[1149] PRACH;

[1150] The channel corresponding to the signal used to trigger the SSB to send;

[1151] The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

[1152] In some embodiments, the DMRS information includes at least one of the following: the number of DMRS ports;

[1153] DMRS port;

[1154] DMRS symbol count;

[1155] DMRS symbol;

[1156] DMRS prefix symbol count;

[1157] DMRS prefix symbol position;

[1158] DMRS extra symbol count;

[1159] Additional symbol positions for DMRS;

[1160] Code Division Multiplexing (CDM) groups;

[1161] The number of CDM groups without data reuse;

[1162] Orthogonal Covering Code (OCC) Index;

[1163] OOC sequence;

[1164] OCC length;

[1165] DMRS time-domain density;

[1166] DMRS frequency domain density;

[1167] DMRS configuration type;

[1168] DMRS sequence information.

[1169] In this embodiment, a network-side device transmits or receives at least one DMRS for a first channel; wherein the DMRS information is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the DMRS information; a first signaling, wherein the first signaling is used to indicate the DMRS information; and a first signal, wherein the first signal is used by the terminal to report the DMRS information. This allows for the determination of a suitable DMRS for the first channel, and the performance of channel estimation and demodulation based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[1170] The DMRS information determination device provided in this application embodiment can achieve... Figures 2 to 5 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[1171] like Figure 8 As shown in the figure, this application embodiment also provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instructions that can run on the processor 601.

[1172] Optionally, when the communication device 600 is a terminal, the program or instructions executed by the processor 601 implement the various steps executed by the terminal in the above-mentioned method embodiment for determining DMRS information, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[1173] Optionally, when the communication device 600 is a network-side device, the program or instructions executed by the processor 601 implement the various steps executed by the network-side device in the above-mentioned method embodiment for determining DMRS information, and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[1174] This application embodiment 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, for example... Figure 2 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 6 The device 400 shown is for determining DMRS information.

[1175] Specifically, Figure 9 A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[1176] The terminal 700 includes, but is not limited to, at least some of the following components: radio frequency unit 701, network module 702, audio output unit 703, input unit 704, sensor 705, display unit 706, user input unit 707, interface unit 708, memory 709, and processor 710.

[1177] Those skilled in the art will understand that the terminal 700 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 710 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 9 The terminal structure shown 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.

[1178] It should be understood that, in this embodiment, the input unit 704 may include a graphics processor 7041 and a microphone 7042. The graphics processor 7041 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 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include a touch detection device and a touch controller. Other input devices 7072 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.

[1179] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 701 can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network-side device. Typically, the radio frequency unit 701 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[1180] The memory 709 can be used to store software programs or instructions, as well as various data. The memory 709 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 709 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 709 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[1181] Processor 710 may include one or more processing units; optionally, processor 710 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 processor 710.

[1182] The radio frequency unit 701 is used to transmit or receive at least one demodulation reference signal DMRS for a first channel;

[1183] The information in the DMRS is determined based on at least one of the following:

[1184] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[1185] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[1186] A first signal, wherein the first signal is used by the terminal to report the information of the DMRS.

[1187] In the embodiments of this application, a terminal transmits or receives at least one DMRS for a first channel; wherein the information of the DMRS is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the information of the DMRS; a first signaling, wherein the first signaling is used to indicate the information of the DMRS; and a first signal, wherein the first signal is used by the terminal to report the information of the DMRS. This allows for the determination of a suitable DMRS for the first channel, and the performance of channel estimation and demodulation of the first channel based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[1188] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[1189] This application embodiment also provides a network-side device, 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, for example... Figure 5 The steps of the method embodiment shown are illustrated. 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.

[1190] This application embodiment also provides a network-side device, which may be... Figure 7 The device 500 shown is for determining DMRS information.

[1191] Specifically, such as Figure 10 As shown, the network-side device 800 includes: an antenna 81, a radio frequency (RF) device 82, a baseband device 83, a processor 84, and a memory 85. The antenna 81 is connected to the RF device 82. In the uplink direction, the RF device 82 receives information through the antenna 81 and transmits the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be transmitted and sends it to the RF device 82. The RF device 82 processes the received information and transmits it through the antenna 81.

[1192] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 83, which includes a baseband processor.

[1193] Baseband device 83 may include, for example, at least one baseband board on which multiple chips are disposed, such as... Figure 10 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 85 via a bus interface to call the program or instructions in the memory 85 to execute the operation of the network-side device shown in the above method embodiment.

[1194] The network-side device may also include a network interface 86, such as a Common Public Radio Interface (CPRI).

[1195] The radio frequency device 82 is used to transmit or receive at least one demodulation reference signal DMRS for a first channel;

[1196] The information in the DMRS is determined based on at least one of the following:

[1197] The first parameter, wherein the first parameter is associated with the information of the DMRS;

[1198] First signaling, wherein the first signaling is used to indicate information of the DMRS;

[1199] The first signal is used by the terminal to report information from the DMRS.

[1200] Furthermore, the network-side device 800 in this embodiment of the application also includes: a program or instructions stored in a memory 85 and executable on a processor 84, wherein the processor 84 calls the program or instructions in the memory 85 to execute. Figure 7 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[1201] In this embodiment, a network-side device transmits or receives at least one DMRS for a first channel; wherein the DMRS information is determined based on at least one of the following: a first parameter, wherein the first parameter is associated with the DMRS information; a first signaling, wherein the first signaling is used to indicate the DMRS information; and a first signal, wherein the first signal is used by the terminal to report the DMRS information. This allows for the determination of a suitable DMRS for the first channel, and the performance of channel estimation and demodulation based on the DMRS of the first channel, thereby improving the reliability of the first channel transmission.

[1202] 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 method embodiment for determining DMRS information and achieve the same technical effect. To avoid repetition, they will not be described again here.

[1203] 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.

[1204] This application embodiment 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 method embodiment for determining DMRS information, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1205] 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.

[1206] 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 method embodiment for determining DMRS information, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[1207] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to perform the steps executed by the terminal in the method for determining DMRS information as described above, and the network-side device can be used to perform the steps executed by the network-side device in the method for determining DMRS information as described above.

[1208] 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.

[1209] 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.

[1210] 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 method for determining DMRS information, characterized in that, include: The terminal transmits or receives at least one demodulation reference signal (DMRS) for a first channel; The information in the DMRS is determined based on at least one of the following: The first parameter, wherein the first parameter is associated with the information of the DMRS; First signaling, wherein the first signaling is used to indicate information of the DMRS; A first signal, wherein the first signal is used by the terminal to report information from the DMRS.

2. The method according to claim 1, characterized in that, The first parameter includes at least one of the following: The data stream corresponding to the first channel; The transport block TB corresponding to the first channel; The channel type corresponding to the first channel; The scheduling type corresponding to the first channel; The modulation and coding scheme (MCS) corresponding to the first channel; The transmission timing corresponding to the first channel; The time-domain resources corresponding to the first channel; Frequency domain resources corresponding to the first channel; The first reference signal or the first reference channel group associated with the first channel; The synchronization signal block (SSB) related information associated with the first channel; The first channel corresponds to the Radio Network Temporary Identifier (RNTI). The physical random access channel (PRACH) resource corresponding to the first channel; The search space corresponding to the first channel; The quasi-co-address QCL relationship associated with the first channel.

3. The method according to claim 1, characterized in that, The first signaling includes at least one of the following: Frequency domain resource allocation FDRA domain; Time-Domain Resource Allocation (TDRA) domain; Modulation coding domain; Redundant version fields; System information indication field; TB scaling domain; Short message indicator field; Short message field; DMRS information field; DMRS information configuration fields; Terminal identifier configuration field; Access type configuration field; Master Information Block (MIB); Layer 1 load.

4. The method according to claim 3, characterized in that, The short message indication field includes at least X groups of indication bits, which are used to indicate information of the DMRS, and the X groups of indication bits satisfy at least one of the following: The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel; The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel; Where X, X1, and X2 are all positive integers.

5. The method according to claim 3, characterized in that, The short message field includes at least Y groups of indicator bits, which are used to indicate information of the DMRS, and the Y groups of indicator bits satisfy at least one of the following: The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel; The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel; Where Y, Y1, and Y2 are all positive integers.

6. The method according to claim 1, characterized in that, The first signal includes at least one of the following: Wake-up signal WUS; PRACH signal; Detection Reference Signal (SRS); Positioning reference signal PRS; Uplink control channel; Uplink data channel.

7. The method according to any one of claims 1 to 6, characterized in that, The information in the DMRS corresponds to at least one DMRS instruction table; Wherein, the DMRS indication table satisfies at least one of the following: The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter; The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication; The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal. Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS; Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

8. The method according to any one of claims 1 to 7, characterized in that, The at least one first channel is scheduled via a second signaling; The second signaling includes at least one of the following: MIB; Layer 1 load; Radio Resource Control (RRC) signaling; Media Access Control Unit (MAC-CE) signaling; Downlink Control Information (DCI); Physical Downlink Shared Channel (PDSCH); Physical Uplink Shared Channel (PUSCH); Reference signal; Broadcast signaling for non-serving cells; Broadcast signaling on non-serving carriers; Broadcast signaling from a non-service transmit / receive point (TRP); Random Access Response (RAR) for non-serving cells.

9. The method according to claim 8, characterized in that, The DMRS of the at least one first channel satisfies at least one of the following: The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit; The DMRS of multiple first channels scheduled by the second signaling occupy at least one time domain unit; The DMRS of the multiple first channels scheduled by the second signaling occupies different time domain units; The DMRS of multiple first channels scheduled by the second signaling form a time-domain binding; The DMRS information of the multiple first channels scheduled by the second signaling is different.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: the terminal reporting first capability information; The first capability information includes at least one of the following: The terminal supports at least one DMRS configuration for transmission on at least one of the first channels; The terminal supports applicable conditions for DMRS information transmitted on at least one of the first channels; the terminal supports the simultaneous use of at least two DMRS configurations. The terminal supports the combination of at least two DMRS configurations used simultaneously. The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations; The terminal supports switching between at least two DMRS configurations.

11. The method according to claim 10, characterized in that, The terminal reports the first capability information, including: The terminal reports the first capability information through at least one of the following: PRACH; WUS; SRS; Message 3 of the random access procedure; Message A of the random access procedure; Uplink control signaling; RRC signaling; Second signal.

12. The method according to claim 10 or 11, characterized in that, The reporting granularity of the first capability information includes at least one of the following: The channel type of the first channel; The scheduling type of the first channel; Terminal type; terminal; Terminal group; frequency band; Frequency band group; Application scenarios; TRP; TRP group; residential community; Community group; carrier wave; Carrier group; Reference signal; Reference signal group.

13. The method according to any one of claims 1 to 12, characterized in that, The first channel includes at least one of the following: PDSCH carrying system messages; PDSCH carrying paging messages; PDSCH carrying paging short messages; PDSCH in a disconnected state; PUSCH in a disconnected state; The channels corresponding to relevant messages during the random access process; A broadcast channel carrying system messages; A multicast channel carrying multicast messages; Common downlink control channel; Common uplink channel; PRACH; The channel corresponding to the signal used to trigger the SSB to send; The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

14. The method according to any one of claims 1 to 13, characterized in that, The information in the DMRS includes at least one of the following: Number of DMRS ports; DMRS port; DMRS symbol count; DMRS symbol; DMRS prefix symbol count; DMRS prefix symbol position; DMRS extra symbol count; Additional symbol positions for DMRS; Code Division Multiplexing (CDM) groups; The number of CDM groups without data reuse; Orthogonal Covering Code (OCC) Index; OOC sequence; OCC length; DMRS time-domain density; DMRS frequency domain density; DMRS configuration type; DMRS sequence information.

15. A method for determining DMRS information, characterized in that, include: A network-side device transmits or receives at least one demodulation reference signal (DMRS) for a first channel; wherein the information of the DMRS is determined based on at least one of the following: The first parameter, wherein the first parameter is associated with the information of the DMRS; First signaling, wherein the first signaling is used to indicate information of the DMRS; The first signal is used by the terminal to report information from the DMRS.

16. The method according to claim 15, characterized in that, The first parameter includes at least one of the following: The data stream corresponding to the first channel; The transport block TB corresponding to the first channel; The channel type corresponding to the first channel; The scheduling type corresponding to the first channel; The modulation and coding scheme (MCS) corresponding to the first channel; The transmission timing corresponding to the first channel; The time-domain resources corresponding to the first channel; Frequency domain resources corresponding to the first channel; The first reference signal or the first reference channel group associated with the first channel; The synchronization signal block (SSB) related information associated with the first channel; The first channel corresponds to the Radio Network Temporary Identifier (RNTI). The physical random access channel (PRACH) resource corresponding to the first channel; The search space corresponding to the first channel; The quasi-co-address QCL relationship associated with the first channel.

17. The method according to claim 15, characterized in that, The first signaling includes at least one of the following: Frequency domain resource allocation FDRA domain; Time-Domain Resource Allocation (TDRA) domain; Modulation coding domain; Redundant version fields; System information indication field; TB scaling domain; Short message indicator field; Short message field; DMRS information field; DMRS information configuration fields; Terminal identifier configuration field; Access type configuration field; Master Information Block (MIB); Layer 1 load.

18. The method according to claim 17, characterized in that, The short message indication field includes at least X groups of indication bits, which are used to indicate information of the DMRS, and the X groups of indication bits satisfy at least one of the following: The X1 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the first channel; The X2 group of indicator bits in the X group of indicator bits corresponds to the DMRS information of the second channel; Where X, X1, and X2 are all positive integers.

19. The method according to claim 17, characterized in that, The short message field includes at least Y groups of indicator bits, which are used to indicate information of the DMRS, and the Y groups of indicator bits satisfy at least one of the following: The Y1 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the first channel; The Y2 group of indicator bits in the Y group of indicator bits corresponds to the DMRS information of the second channel; Where Y, Y1, and Y2 are all positive integers.

20. The method according to claim 15, characterized in that, The first signal includes at least one of the following: Wake-up signal WUS; PRACH signal; Detection Reference Signal (SRS); Positioning reference signal PRS; Uplink control channel; Uplink data channel.

21. The method according to any one of claims 15 to 20, characterized in that, The information in the DMRS corresponds to at least one DMRS instruction table; Wherein, the DMRS indication table satisfies at least one of the following: The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter; The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication; The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal. Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS; Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

22. The method according to any one of claims 15 to 21, characterized in that, The at least one first channel is scheduled via a second signaling; The second signaling includes at least one of the following: MIB; Layer 1 load; Radio Resource Control (RRC) signaling; Media Access Control Unit (MAC-CE) signaling; Downlink Control Information (DCI); Physical Downlink Shared Channel (PDSCH); Physical Uplink Shared Channel (PUSCH); Reference signal; Broadcast signaling for non-serving cells; Broadcast signaling on non-serving carriers; Broadcast signaling from a non-service transmit / receive point (TRP); Random Access Response (RAR) for non-serving cells.

23. The method according to claim 22, characterized in that, The DMRS of the at least one first channel satisfies at least one of the following: The second signaling scheduling of one of the first channels' DMRS occupies at least one time domain unit; The DMRS of multiple first channels scheduled by the second signaling occupy at least one time domain unit; The DMRS of the multiple first channels scheduled by the second signaling occupies different time domain units; The DMRS of multiple first channels scheduled by the second signaling form a time-domain binding; The DMRS information of the multiple first channels scheduled by the second signaling is different.

24. The method according to any one of claims 15 to 23, characterized in that, The method further includes: the network-side device receiving first capability information from the terminal; The first capability information includes at least one of the following: The terminal supports at least one DMRS configuration for transmission on at least one of the first channels; The applicable conditions for the information of at least one of the first channels supported by the terminal for transmission of DMRS. The terminal supports the simultaneous use of at least two DMRS configurations; The terminal supports the combination of at least two DMRS configurations used simultaneously. The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations; The terminal supports switching between at least two DMRS configurations.

25. The method according to claim 24, characterized in that, The first capability information is reported by the terminal through at least one of the following: PRACH; WUS; SRS; Message 3 of the random access procedure; Message A of the random access procedure; Uplink control signaling; RRC signaling; Second signal.

26. The method according to claim 24 or 25, characterized in that, The reporting granularity of the first capability information includes at least one of the following: The channel type of the first channel; The scheduling type of the first channel; Terminal type; terminal; Terminal group; frequency band; Frequency band group; Application scenarios; TRP; TRP group; residential community; Community group; carrier wave; Carrier group; Reference signal; Reference signal group.

27. The method according to any one of claims 15 to 26, characterized in that, The first channel includes at least one of the following: PDSCH carrying system messages; PDSCH carrying paging messages; PDSCH carrying paging short messages; PDSCH in a disconnected state; PUSCH in a disconnected state; The channels corresponding to relevant messages during the random access process; A broadcast channel carrying system messages; A multicast channel carrying multicast messages; Common downlink control channel; Common uplink channel; PRACH; The channel corresponding to the signal used to trigger the SSB to send; The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

28. The method according to any one of claims 15 to 27, characterized in that, The information in the DMRS includes at least one of the following: Number of DMRS ports; DMRS port; DMRS symbol count; DMRS symbol; DMRS prefix symbol count; DMRS prefix symbol position; DMRS extra symbol count; Additional symbol positions for DMRS; Code Division Multiplexing (CDM) groups; The number of CDM groups without data reuse; Orthogonal Covering Code (OCC) Index; OOC sequence; OCC length; DMRS time-domain density; DMRS frequency domain density; DMRS configuration type; DMRS sequence information.

29. A device for determining DMRS information, characterized in that, include: A first transmitting module and a first receiving module; The first transmitting module is used to transmit at least one demodulation reference signal (DMRS) for a first channel, and the first receiving module is used to receive at least one DMRS for a first channel. The information in the DMRS is determined based on at least one of the following: The first parameter, wherein the first parameter is associated with the information of the DMRS; First signaling, wherein the first signaling is used to indicate information of the DMRS; A first signal, wherein the first signal is used by the DMRS information determining device to report the DMRS information.

30. The apparatus according to claim 29, characterized in that, The first parameter includes at least one of the following: The data stream corresponding to the first channel; The transport block TB corresponding to the first channel; The channel type corresponding to the first channel; The scheduling type corresponding to the first channel; The modulation and coding scheme (MCS) corresponding to the first channel; The transmission timing corresponding to the first channel; The time-domain resources corresponding to the first channel; Frequency domain resources corresponding to the first channel; The first reference signal or the first reference channel group associated with the first channel; The synchronization signal block (SSB) related information associated with the first channel; The first channel corresponds to the Radio Network Temporary Identifier (RNTI). The physical random access channel (PRACH) resource corresponding to the first channel; The search space corresponding to the first channel; The quasi-co-address QCL relationship associated with the first channel.

31. The apparatus according to claim 29, characterized in that, The first signaling includes at least one of the following: Frequency domain resource allocation FDRA domain; Time-Domain Resource Allocation (TDRA) domain; Modulation coding domain; Redundant version fields; System information indication field; TB scaling domain; Short message indicator field; Short message field; DMRS information field; DMRS information configuration fields; Terminal identifier configuration field; Access type configuration field; Master Information Block (MIB); Layer 1 load.

32. The apparatus according to claim 29, characterized in that, The first signal includes at least one of the following: Wake-up signal WUS; PRACH signal; Detection Reference Signal (SRS); Positioning reference signal PRS; Uplink control channel; Uplink data channel.

33. The apparatus according to any one of claims 29 to 32, characterized in that, The information in the DMRS corresponds to at least one DMRS instruction table; Wherein, the DMRS indication table satisfies at least one of the following: The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first parameter; The information of each group of DMRS in the DMRS indication table corresponds to different situations of the first signaling indication; The information in each group of DMRS in the DMRS indication table corresponds to different situations reported by the first signal. Different DMRS indication tables correspond to different types of first channels, or different DMRS indication tables correspond to different types of DMRS; Each group of DMRS information in the DMRS indication table corresponds to at least one DMRS port.

34. The apparatus according to any one of claims 29 to 33, characterized in that, The first sending module is also used to report first capability information; The first capability information includes at least one of the following: The DMRS information determination device supports at least one DMRS configuration for transmission of at least one of the first channels; The DMRS information determining device supports applicable conditions for DMRS information transmitted on at least one of the first channels. The device for determining DMRS information supports the simultaneous use of at least two DMRS configurations. The device for determining DMRS information supports a combination of information from at least two DMRS configurations used simultaneously. The DMRS information determination device supports receiving or transmitting the first channel based on at least two DMRS configurations; The device for determining DMRS information supports switching between at least two DMRS configurations.

35. The apparatus according to any one of claims 29 to 34, characterized in that, The first channel includes at least one of the following: PDSCH carrying system messages; PDSCH carrying paging messages; PDSCH carrying paging short messages; PDSCH in a disconnected state; PUSCH in a disconnected state; The channels corresponding to relevant messages during the random access process; A broadcast channel carrying system messages; A multicast channel carrying multicast messages; Common downlink control channel; Common uplink channel; PRACH; The channel corresponding to the signal used to trigger the SSB to send; The channel corresponding to the signal used to trigger the transmission of the System Information Block (SIB).

36. A device for determining DMRS information, characterized in that, include: Second transmitting module and second receiving module; The second transmitting module is used to transmit at least one demodulation reference signal (DMRS) of the first channel, or the second receiving module is used to receive at least one DMRS of the first channel; The information in the DMRS is determined based on at least one of the following: The first parameter, wherein the first parameter is associated with the information of the DMRS; First signaling, wherein the first signaling is used to indicate information of the DMRS; The first signal is used by the terminal to report information from the DMRS.

37. The apparatus according to claim 36, characterized in that, The first parameter includes at least one of the following: The data stream corresponding to the first channel; The transport block TB corresponding to the first channel; The channel type corresponding to the first channel; The scheduling type corresponding to the first channel; The modulation and coding scheme (MCS) corresponding to the first channel; The transmission timing corresponding to the first channel; The time-domain resources corresponding to the first channel; Frequency domain resources corresponding to the first channel; The first reference signal or the first reference channel group associated with the first channel; The synchronization signal block (SSB) related information associated with the first channel; The first channel corresponds to the Radio Network Temporary Identifier (RNTI). The physical random access channel (PRACH) resource corresponding to the first channel; The search space corresponding to the first channel; The quasi-co-address QCL relationship associated with the first channel.

38. The apparatus according to claim 36, characterized in that, The first signaling includes at least one of the following: Frequency domain resource allocation FDRA domain; Time-Domain Resource Allocation (TDRA) domain; Modulation coding domain; Redundant version fields; System information indication field; TB scaling domain; Short message indicator field; Short message field; DMRS information field; DMRS information configuration fields; Terminal identifier configuration field; Access type configuration field; Master Information Block (MIB); Layer 1 load.

39. The apparatus according to claim 36, characterized in that, The first signal includes at least one of the following: Wake-up signal WUS; PRACH signal; Detection Reference Signal (SRS); Positioning reference signal PRS; Uplink control channel; Uplink data channel.

40. The apparatus according to any one of claims 36 to 39, characterized in that, The second receiving module is further configured to receive first capability information from the terminal; The first capability information includes at least one of the following: The terminal supports at least one DMRS configuration for transmission on at least one of the first channels; The applicable conditions for the information of at least one of the first channels supported by the terminal for transmission of DMRS. The terminal supports the simultaneous use of at least two DMRS configurations; The terminal supports the combination of at least two DMRS configurations used simultaneously. The terminal supports receiving or transmitting on the first channel based on at least two DMRS configurations; The terminal supports switching between at least two DMRS configurations.

41. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method for determining DMRS information as described in any one of claims 1 to 14.

42. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the method for determining DMRS information as described in any one of claims 15 to 28.

43. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the method for determining DMRS information as described in any one of claims 1 to 14, or implement the steps of the method for determining DMRS information as described in any one of claims 15 to 28.

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