Method, terminal device and network device for transmitting data in vehicle network

Abstract

An embodiment of the present application discloses a method, terminal device, and network device for transmitting data in a vehicle network. The method includes: the terminal device determines a demodulation reference signal (DMRS) pattern corresponding to a first channel; and the terminal device demodulates the first channel according to the DMRS pattern.

Description

[0001] This application claims priority to PCT patent application number PCT / CN2018 / 071371, filed with the Patent Office of China on January 4, 2018, entitled “Method, terminal device and network device for transmitting data in a connected vehicle network”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and more specifically, to a method, terminal device, and network device for transmitting data in an Internet of Vehicles (IoV). Background Art

[0003] The IoV system is a sidelink (SL) transmission technology based on Long Term Evaluation Device to Device (LTE D2D). Unlike traditional LTE systems where communication data is received or sent via base stations, the IoV system uses direct terminal-to-terminal communication, resulting in higher spectrum efficiency and lower transmission latency.

[0004] In the 5G New Radio (NR) system, two transmission waveforms are supported for uplink transmission. When terminal devices use different transmission waveforms, the corresponding Demodulation Reference Signal (DMRS) patterns are different. However, in the NR-V2X (vehicle-to-everything) system based on NR technology, the environment in which vehicles operate is complex and changeable. How to achieve flexible configuration of DMRS patterns is an urgent problem that needs to be solved. Summary of the Invention

[0005] Provided are a method, terminal device, and network device for transmitting data in an Internet of Vehicles, capable of achieving flexible configuration of DMRS patterns.

[0006] In a first aspect, a method for transmitting data in an Internet of Vehicles is provided, comprising:

[0007] The terminal device determines a demodulation reference signal DMRS pattern corresponding to the first channel;

[0008] The terminal device demodulates the first channel according to the DMRS pattern.

[0009] In some possible implementations, the terminal device determines a demodulation reference signal (DMRS) pattern corresponding to the first channel, including:

[0010] The terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel.

[0011] Therefore, in the method for transmitting data in the Internet of Vehicles of an embodiment of the present application, the terminal device can determine the DMRS pattern corresponding to the first channel based on the configuration of the network device, the resource pool used to transmit the first channel, and at least one of the carrier and waveform, thereby realizing flexible configuration of the DMRS pattern.

[0012] In some possible implementations, the terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0013] If the configuration information indicates a first DMRS pattern, the terminal device determines, among multiple DMRS patterns, that the first DMRS pattern is the DMRS pattern corresponding to the first channel.

[0014] In some possible implementations, the multiple DMRS patterns are pre-configured on the terminal device or configured by the network device.

[0015] In some possible implementations, the terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0016] The terminal device determines the DMRS pattern corresponding to the first channel based on the resource pool used by the first channel and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between multiple resource pools and multiple DMRS patterns.

[0017] Optionally, the multiple resource pools and the multiple DMRS patterns may have a one-to-one, one-to-many, many-to-one, or many-to-many correspondence relationship, which is not limited in the embodiments of the present application.

[0018] In some possible implementations, the multiple resource pools correspond to multiple speed ranges respectively, and the method further includes:

[0019] The terminal device determines a corresponding target resource pool according to a current moving speed, where the target resource pool is the resource pool used by the first channel.

[0020] Optionally, if the terminal device is currently in a high-speed scenario and the channel changes quickly, the network device can configure a DMRS pattern that is denser in the time domain for the terminal device. This will help the terminal device to estimate the channel more accurately, thereby improving data reception performance; or, if the terminal device is currently in a low-speed scenario and the channel changes slowly, the network device can configure a DMRS pattern that is sparsely distributed in the time domain for the terminal device, which will help reduce DMRS overhead. Therefore, the method for transmitting data in the Internet of Vehicles in the embodiment of the present application can achieve a reasonable compromise between reception performance and pilot overhead.

[0021] In some possible implementations, the first corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0022] In some possible implementations, the terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0023] The terminal device determines the DMRS pattern corresponding to the first channel based on the carrier used by the first channel and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

[0024] Optionally, the multiple carriers and the multiple DMRS patterns may have a one-to-one, one-to-many, many-to-one, or many-to-many correspondence relationship, which is not limited in the embodiment of the present application.

[0025] In some possible implementations, the second corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0026] In some possible implementations, the terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0027] The terminal device determines the DMRS pattern corresponding to the first channel based on the waveform used by the first channel and a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0028] Optionally, the multiple waveforms and the multiple DMRS patterns may have a one-to-one, one-to-many, many-to-one, or many-to-many correspondence relationship, which is not limited in the embodiment of the present application.

[0029] In some possible implementations, the third corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0030] In some possible implementations, the terminal device determines a demodulation reference signal (DMRS) pattern corresponding to the first channel, including:

[0031] The terminal device determines the DMRS pattern corresponding to the first channel based on the basic parameter set used by the first channel.

[0032] In some possible implementations, the terminal device determines, according to the basic parameter set used by the first channel, a DMRS pattern corresponding to the first channel, including:

[0033] The terminal device determines the DMRS pattern corresponding to the first channel based on the basic parameter set used by the first channel and a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

[0034] In some possible implementations, the fourth corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0035] In some possible implementations, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

[0036] In some possible implementations, the first channel is a physical sidelink shared channel PSSCH, or the first channel is a physical sidelink control channel PSCCH.

[0037] In some possible implementations, the first channel is a physical sidelink shared channel PSSCH, a physical sidelink control channel PSCCH corresponding to the first channel is a second channel, and the terminal device determines a demodulation reference signal DMRS pattern corresponding to the first channel, including:

[0038] The terminal device determines the DMRS pattern corresponding to the first channel based on the second channel.

[0039] In some possible implementations, the second channel carries indication information, where the indication information is used to indicate a second DMRS pattern, and the terminal device determines, based on the second channel, a DMRS pattern corresponding to the first channel, including:

[0040] The terminal device determines that the second DMRS pattern indicated by the indication information is the DMRS pattern corresponding to the first channel.

[0041] In some possible implementations, the terminal device determining, according to the second channel, a DMRS pattern corresponding to the first channel, includes:

[0042] The terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the sequence, cyclic shift, orthogonal cover code OCC, resource position, and root sequence of the DMRS corresponding to the second channel.

[0043] In some possible implementations, the terminal device determining, according to the second channel, a DMRS pattern corresponding to the first channel, includes:

[0044] The terminal device determines the DMRS pattern corresponding to the first channel based on the scrambling code information of the second channel.

[0045] In some possible implementations, the DMRS pattern includes at least one of the following:

[0046] The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit;

[0047] The position of the OFDM symbol occupied by the DMRS within a time unit;

[0048] The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0049] The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS;

[0050] An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS;

[0051] The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS;

[0052] In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

[0053] In a second aspect, a method for transmitting data in an Internet of Vehicles is provided, comprising:

[0054] The network device determines configuration information, where the configuration information is used by the terminal device to determine a demodulation reference signal (DMRS) pattern corresponding to the first channel;

[0055] The network device sends the configuration information to the terminal device.

[0056] In some possible implementations, the configuration information is used to indicate a first DMRS pattern among multiple DMRS patterns.

[0057] In some possible implementations, the method further includes:

[0058] The network device configures the multiple DMRS patterns for the terminal device.

[0059] In some possible implementations, the configuration information is used to indicate a first correspondence relationship, where the first correspondence relationship is a correspondence relationship between multiple resource pools and multiple DMRS patterns.

[0060] In some possible implementations, the configuration information is used to indicate a second correspondence, where the second correspondence is a correspondence between multiple carriers and multiple DMRS patterns.

[0061] In some possible implementations, the configuration information is used to indicate a third corresponding relationship, where the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0062] In some possible implementations, the configuration information is used to indicate a fourth corresponding relationship, where the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

[0063] In some possible implementations, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

[0064] In some possible implementations, the first channel is a physical sidelink control channel PSCCH.

[0065] In some possible implementations, the first channel is a physical sidelink shared channel PSSCH, and a physical sidelink control channel PSCCH corresponding to the first channel is a second channel.

[0066] In some possible implementations, the configuration information is used to indicate a correspondence between at least one of a sequence, a cyclic shift, an orthogonal cover code OCC, a resource location, and a root sequence of the DMRS corresponding to the second channel and the DMRS sequence.

[0067] In some possible implementations, the configuration information is used to indicate a correspondence between scrambling code information of the second channel and a DMRS sequence.

[0068] In some possible implementations, the configuration information is used to indicate a correspondence between mask information of the second channel and a DMRS sequence.

[0069] In some possible implementations, the DMRS pattern includes at least one of the following:

[0070] The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit;

[0071] The position of the OFDM symbol occupied by the DMRS within a time unit;

[0072] The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0073] The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS;

[0074] An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS;

[0075] The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS;

[0076] In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

[0077] In a third aspect, a terminal device is provided, configured to execute the method in the first aspect or any possible implementation of the first aspect. Specifically, the terminal device includes a unit configured to execute the method in the first aspect or any possible implementation of the first aspect.

[0078] In a fourth aspect, a network device is provided, comprising: a memory, a processor, an input interface, and an output interface. The memory, processor, input interface, and output interface are connected via a bus system. The memory is configured to store instructions, and the processor is configured to execute the instructions stored in the memory, thereby performing the method of the first aspect or any possible implementation of the first aspect.

[0079] In a fifth aspect, a terminal device is provided, configured to execute the method in the second aspect or any possible implementation of the second aspect. Specifically, the terminal device includes a unit configured to execute the method in the second aspect or any possible implementation of the second aspect.

[0080] In a sixth aspect, a network device is provided, comprising: a memory, a processor, an input interface, and an output interface. The memory, processor, input interface, and output interface are connected via a bus system. The memory is configured to store instructions, and the processor is configured to execute the instructions stored in the memory, thereby performing the method of the second aspect or any possible implementation of the second aspect.

[0081] In the seventh aspect, a computer storage medium is provided for storing computer software instructions for executing the method in the above-mentioned first aspect or any possible implementation of the first aspect, which includes a program designed for executing the above-mentioned aspect.

[0082] In an eighth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method in the above-mentioned first aspect or any optional implementation of the first aspect.

[0083] In the ninth aspect, a computer storage medium is provided for storing computer software instructions for executing the method in the second aspect or any possible implementation of the second aspect, which includes a program designed for executing the above aspect.

[0084] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the method in the second aspect or any optional implementation of the second aspect.

[0085] In an eleventh aspect, a chip is provided for implementing the method described in any one of the first and second aspects above, or their respective implementations. Specifically, the chip includes a processor configured to load and execute a computer program from a memory, causing a device equipped with the chip to perform the method described in any one of the first and second aspects above, or their respective implementations. BRIEF DESCRIPTION OF THE DRAWINGS

[0086] Figure 1 A schematic diagram showing an application scenario of an embodiment of the present application is shown.

[0087] Figure 2 A schematic flow chart of a method for transmitting data in a connected vehicle network according to an embodiment of the present application is shown.

[0088] Figure 3 A schematic flowchart of a method for transmitting data in a connected vehicle network according to another embodiment of the present application is shown.

[0089] Figure 4 A schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0090] Figure 5A schematic block diagram of a network device according to another embodiment of the present application is shown.

[0091] Figure 6 A schematic block diagram of a terminal device according to an embodiment of the present application is shown.

[0092] Figure 7 A schematic block diagram of a network device according to another embodiment of the present application is shown.

[0093] Figure 8 This is a schematic block diagram of a chip provided in an embodiment of the present application.

[0094] Figure 9 It is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0095] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0096] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: LTE systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, 4.5th generation (4.5G) networks, fifth generation (5G) networks, new radio (NR), etc. The embodiments of the present application can also be applied to vehicle-to-everything (V2X) systems, such as vehicle-to-vehicle (V2V) systems; or, can also be applied to device-to-device (D2D) systems, but the embodiments of the present application are not limited thereto.

[0097] It should be understood that the terminal device in the embodiments of the present application may also be referred to as a terminal, user equipment (UE), mobile station (MS), mobile terminal (MT), etc. The terminal device may be a vehicle user equipment (VUE), such as a wireless terminal in a vehicle or self-driving vehicle; or the terminal device may be a pedestrian user equipment (PUE), such as a mobile phone, a tablet computer, a computer with wireless transceiver function, etc.

[0098] It should be understood that the network device involved in the embodiments of the present application is a device deployed in a radio access network to provide wireless communication functions for terminal devices. The network device may be a base station, which may include various forms of macro base stations, micro base stations, relay stations, access points, etc. In systems using different radio access technologies, the name of the device with base station functions may vary. For example, in LTE networks, it is called an evolved node B (eNB or eNodeB), and in third-generation (3G) networks, it is called a node B, etc.

[0099] FIG1 shows a schematic diagram of a vehicle networking system according to an embodiment of the present application. Figure 1 As shown, the embodiments of the present application can be applied to various application scenarios. Here, the network device and terminal device in the Internet of Vehicles system are used as an example for explanation, wherein the network device can be a base station 110, and the terminal device can be a vehicle-mounted terminal, for example, the vehicle-mounted terminal 121 and the vehicle-mounted terminal 122.

[0100] In the Internet of Vehicles system, vehicles can exchange control information through the Physical Sidelink Control Channel (PSCCH) and exchange data information through the Physical Sidelink Shared Channel (PSSCH). The DMRS pattern can be used for related demodulation of PSCCH or PSSCH, that is, the PSCCH or PSSCH can be demodulated according to the DMRS pattern to obtain the control information or data information carried on the PSCCH or PSSCH.

[0101] In a vehicle network system, the environment in which vehicles are located is complex and changeable. For example, a vehicle may be in a high-speed scenario or a traffic-congested urban scenario. Different scenarios have different requirements for DMRS. Therefore, how to achieve flexible configuration of DMRS is an issue worth studying.

[0102] In view of this, an embodiment of the present application proposes a method for transmitting data in an Internet of Vehicles, which can achieve flexible configuration of DMRS.

[0103] Figure 2 is a schematic flow chart of a method 200 for transmitting data in a connected vehicle system provided by an embodiment of the present application. The method 200 can be executed by a terminal device in the connected vehicle system, for example, Figure 1 The vehicle-mounted terminal 121 or the vehicle-mounted terminal 122 shown. Figure 2 As shown, the method 200 includes:

[0104] S210, the terminal device determines a demodulation reference signal DMRS pattern corresponding to a first channel;

[0105] S220, the terminal device demodulates the first channel according to the DMRS pattern.

[0106] Optionally, in an embodiment of the present application, the first channel can be a control channel in the Internet of Vehicles system, that is, a channel used for exchanging control information between vehicles, such as PSCCH, or it can be a data channel in the Internet of Vehicles system, that is, a channel used for data exchange between vehicles, such as PSSCH. This embodiment of the present application is not limited to this.

[0107] Optionally, the terminal device may determine the DMRS pattern used to demodulate the first channel based on the configuration, specific parameters or specific information of the network device. For example, the specific parameters may be parameters of the environment in which the terminal device is located. For example, the terminal device may determine to use a densely distributed DMRS pattern when the current environment is a high-speed scenario, or determine to use a sparsely distributed DMRS pattern in a low-speed scenario. The specific information may be the driving speed information of the terminal device. For example, the terminal device may determine to use a densely distributed DMRS pattern when the current moving speed is greater than a first speed threshold, or determine to use a sparsely distributed DMRS pattern when the current moving speed is less than a second speed threshold. As an example and not a limitation, the first speed threshold may be 80 km / h, and the second speed threshold may be 30 km / h. This is not limited in the embodiments of the present application.

[0108] Optionally, in this embodiment of the present application, the DMRS pattern includes at least one of the following:

[0109] 1. The number of Orthogonal Frequency Division Multiple Access (OFDM) occupied by DMRS in a time unit, that is, the number of DMRS symbols included in a time unit;

[0110] 2. The position of the OFDM symbol occupied by the DMRS in a time unit, that is, the positions of the DMRS symbols in a time unit, for example, the number of OFDM symbols in a subframe or a time slot;

[0111] 3. The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0112] 4. Within an OFDM symbol occupied by the DMRS, the frequency domain spacing between DMRS symbols within a PRB. For example, if a PRB includes three DMRS symbols and there are three resource elements (REs) between every two DMRS symbols, this parameter can be used to indicate three REs.

[0113] 5. Within an OFDM symbol occupied by the DMRS, the offset of the DMRS symbol in a PRB relative to the first subcarrier in the PRB. For example, if a PRB includes three DMRS symbols, this parameter can be used to indicate the offset of the first DMRS symbol in a PRB relative to the first subcarrier (i.e., subcarrier 0) in the PRB.

[0114] 6. The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS, that is, the frequency domain positions occupied by the DMRS within an OFDM symbol. For example, within the frequency domain range of a PRB, the DMRS symbol can occupy all REs, odd REs, or even REs, etc. This embodiment of the present application is not limited to this;

[0115] 7. Within the OFDM symbol where the DMRS is located, whether the REs not occupied by the DMRS can be used to transmit signals other than the DMRS, wherein, within the symbol where the DMRS is located, the DMRS may not occupy all REs, and those REs not occupied by the DMRS may or may not transmit data. This parameter can be used to indicate whether the REs not occupied by the DMRS symbols can be used to transmit other signals, such as PSCCH or PSSCH.

[0116] It should be understood that a time unit may be one or more subframes, one or more time slots, etc., and the embodiments of the present application are not limited to this.

[0117] Optionally, in some embodiments, S210 may include:

[0118] The terminal device determines the DMRS pattern corresponding to the first channel based on at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel.

[0119] It should be understood that the terminal device determines the DMRS pattern corresponding to the first channel based on the above information, which can be configured by the network device or determined by the terminal device itself, that is, the terminal device can decide on its own to determine the DMRS pattern corresponding to the first channel based on the resource pool, carrier or waveform used by the first channel, or it can determine the DMRS pattern corresponding to the first channel based on the resource pool, carrier or waveform used by the first channel based on the indication of the network device. The embodiments of the present application do not limit this.

[0120] In the following, in combination with Embodiments 1 to 4, a method for determining the DMRS pattern corresponding to the first channel is described in detail.

[0121] Embodiment 1: The terminal device determines the DMRS pattern corresponding to the first channel according to the configuration of the network device.

[0122] Optionally, the terminal device determines the DMRS pattern corresponding to the first channel according to at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0123] If the configuration information indicates a first DMRS pattern, the terminal device determines, among multiple DMRS patterns, that the first DMRS pattern is the DMRS pattern corresponding to the first channel.

[0124] Specifically, the network device can obtain the current environment of the terminal device. For example, the terminal device can report the current geographical location information to the network device, so that the network device can determine the environmental information of the geographical location when the network is deployed based on the current geographical location information of the terminal device, such as a high-speed scenario or an urban scenario, etc., and then the network device can configure a corresponding DMRS pattern for the terminal device based on the determined environmental information; or, the network device can also configure a corresponding DMRS pattern for the terminal device based on the current moving speed of the terminal device, for example, the terminal device can report the current moving speed information to the network device, so that the network device can configure a corresponding DMRS pattern for the terminal device based on the current moving speed of the terminal device.

[0125] For example, if the terminal device is currently in a high-speed scenario and the channel changes quickly, the network device can configure a DMRS pattern that is denser in the time domain for the terminal device. This will help the terminal device to estimate the channel more accurately, thereby improving data reception performance. For another example, if the terminal device is currently in a low-speed scenario and the channel changes slowly, the network device can configure a DMRS pattern that is sparsely distributed in the time domain for the terminal device, which will help reduce DMRS overhead. Therefore, the method for transmitting data in the Internet of Vehicles in the embodiment of the present application can achieve a reasonable compromise between reception performance and pilot overhead.

[0126] Optionally, the terminal device is configured with multiple DMRS patterns, which may be pre-configured on the terminal device or configured by the network device. This embodiment of the present application does not limit this. For example, the network device may configure the multiple DMRS patterns for the terminal device via a broadcast message or Radio Resource Control (RRC) signaling. The network device may select a first DMRS pattern from the multiple DMRS patterns as the DMRS pattern used by the first channel of the terminal device. Further, the network device may send configuration information to the terminal device. Optionally, the network device may send the configuration information to the terminal device by sending a broadcast message, RRC signaling, or physical layer control signaling. This embodiment of the present application does not limit this. The configuration information is used to indicate the first DMRS pattern selected by the network device from the multiple DMRS patterns. For example, the configuration information may be directly used to indicate identification information (such as an index) of the first DMRS pattern. After receiving the configuration information, the terminal device may obtain the first DMRS pattern from multiple DMRS patterns. Further, data transmission may be performed according to the first DMRS pattern.

[0127] Embodiment 2: The terminal device determines the DMRS pattern corresponding to the first channel according to the resource pool used by the first channel.

[0128] Optionally, the terminal device determines the DMRS pattern corresponding to the first channel according to at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0129] The terminal device determines the DMRS pattern corresponding to the first channel based on the resource pool used by the first channel and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between multiple resource pools and multiple DMRS patterns.

[0130] That is to say, in this embodiment 2, multiple resource pools and multiple DMRS patterns may have a corresponding relationship. The terminal device can determine the corresponding DMRS pattern based on the resource pool used to transmit the first channel in combination with the first corresponding relationship, and then demodulate the first channel according to the DMRS pattern.

[0131] Optionally, the multiple resource pools and the multiple DMRS patterns can be a one-to-one, one-to-many (for example, one resource pool corresponds to two DMRS patterns), or many-to-one (for example, two resource pools correspond to one DMRS pattern), or many-to-many (for example, two resource pools correspond to two DMRS patterns) correspondence relationship, which is not limited to the embodiments of the present application.

[0132] Optionally, in an embodiment of the present application, the first corresponding relationship may be pre-configured on the terminal device, or may be configured by a network device, which is not limited in this embodiment of the present application.

[0133] Optionally, in an embodiment of the present application, the multiple resource pools may further correspond to multiple speed ranges, and the correspondence between the multiple resource pools and the multiple speed ranges may be pre-configured or network-configured, which is not limited in this embodiment of the present application. When the terminal device performs data transmission, the corresponding speed range may be determined based on the current mobile speed. Further, the resource pool corresponding to the speed range may be determined in combination with the correspondence between the multiple resource pools and the multiple speed ranges. Furthermore, the DMRS pattern corresponding to the resource pool may be determined in combination with the first correspondence, so that data transmission may be performed according to the DMRS pattern.

[0134] In summary, the resource pool has a corresponding relationship with the speed range, and the resource pool has a corresponding relationship with the DMRS pattern. That is, the speed range and the DMRS pattern also have a corresponding relationship. Then, the DMRS pattern corresponding to the low-speed range can be a DMRS pattern sparsely distributed in the time domain, and the DMRS pattern corresponding to the high-speed range can be a DMRS pattern densely distributed in the time domain.

[0135] Embodiment 3: The terminal device determines the DMRS pattern corresponding to the first channel according to the carrier used by the first channel.

[0136] Optionally, the terminal device determines the DMRS pattern corresponding to the first channel according to at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0137] The terminal device determines the DMRS pattern corresponding to the first channel based on the carrier used by the first channel and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

[0138] That is, in this embodiment 3, multiple carriers and multiple DMRS patterns may have a corresponding relationship, and the terminal device can determine the corresponding DMRS pattern based on the carrier used to transmit the first channel in combination with the second corresponding relationship, and then demodulate the first channel according to the DMRS pattern.

[0139] Optionally, the multiple carriers and the multiple DMRS patterns can be a one-to-one, one-to-many (for example, one carrier corresponds to two DMRS patterns), or many-to-one (for example, two carriers correspond to one DMRS pattern), or many-to-many (for example, two carriers correspond to two DMRS patterns), and the embodiments of the present application are not limited to this.

[0140] For example, in a vehicle networking system, the terminal device may support multiple carriers, and each carrier may correspond to a corresponding DMRS pattern. For example, for a terminal device that is backward compatible with Rel-14 or Rel-15, the DMRS pattern used for the carrier supporting Rel-14 or Rel-15 may be the existing Rel-14 DMRS pattern, and other carriers may use other DMRS patterns. In a specific implementation, the correspondence between the carrier and the DMRS may be determined by pre-configuration or network device configuration, and the embodiments of the present application do not limit this.

[0141] Embodiment 4: The terminal device determines the DMRS pattern corresponding to the first channel according to the waveform used by the first channel.

[0142] Optionally, the terminal device determines the DMRS pattern corresponding to the first channel according to at least one of the configuration information sent by the network device, the resource pool used by the first channel, the carrier used by the first channel, and the waveform used by the first channel, including:

[0143] The terminal device determines the DMRS pattern corresponding to the first channel based on the waveform used by the first channel and a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0144] That is to say, in this embodiment 4, multiple waveforms and multiple DMRS patterns may have a corresponding relationship. The terminal device can determine the corresponding DMRS pattern based on the waveform used to transmit the first channel in combination with the third corresponding relationship, and then demodulate the first channel according to the DMRS pattern.

[0145] Optionally, the multiple waveforms and the multiple DMRS patterns can be a one-to-one, one-to-many (for example, one waveform corresponds to two DMRS patterns), or many-to-one (for example, two waveforms correspond to one DMRS pattern), or many-to-many (for example, two waveforms correspond to two DMRS patterns) correspondence relationship, which is not limited to the embodiments of the present application.

[0146] For example, in a vehicle networking system, the terminal device can support multiple waveforms, and the multiple waveforms can correspond to corresponding DMRS patterns. For example, the terminal device supports two waveforms, including a cyclic prefix OFDM (CP-OFDM) waveform and a discrete Fourier transform (DFT-OFDM) waveform, wherein the CP-OFDM waveform and the DFT-OFDM waveform can correspond to different DMRS patterns respectively. The specific DMRS pattern to be adopted can be determined by the characteristics of different waveforms. For example, for the DFT-OFDM waveform, in order to maintain its single-carrier characteristics, the DMRS symbols and data symbols in the corresponding DMRS pattern can be configured to be time division multiplexed (TDM). For another example, for the CP-OFDM waveform, in order to maintain its resource allocation flexibility, the DMRS symbols in the corresponding DMRS pattern can be configured to be discretely embedded in the data channel.

[0147] Similar to the first correspondence and the second correspondence, the third correspondence may also be pre-configured on the terminal device, or may be configured by the network device, which is not limited in the embodiments of the present application.

[0148] Embodiment 5: The terminal device determines the DMRS pattern corresponding to the first channel according to the basic parameter set used by the first channel.

[0149] Optionally, as an embodiment, the terminal device determines a demodulation reference signal (DMRS) pattern corresponding to the first channel, including:

[0150] The terminal device determines the DMRS pattern corresponding to the first channel based on the basic parameter set used by the first channel.

[0151] Specifically, in this embodiment 5, multiple basic parameter sets and multiple DMRS patterns may have a corresponding relationship. The terminal device can determine the corresponding DMRS pattern based on the basic parameter set used to transmit the first channel in combination with the fourth corresponding relationship, and then demodulate the first channel according to the DMRS pattern.

[0152] Optionally, the multiple basic parameter sets and the multiple DMRS patterns can be a one-to-one, one-to-many (for example, one basic parameter set corresponds to two DMRS patterns), or many-to-one (for example, two basic parameter sets correspond to one DMRS pattern), or many-to-many (for example, two basic parameter sets correspond to two DMRS patterns), and the embodiments of the present application are not limited to this.

[0153] As an example and not a limitation, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix (CP) type and CP length, or may also include other parameters used for data transmission, which is not limited in this embodiment of the present application.

[0154] For example, in a vehicle networking system, the terminal device can support multiple subcarrier spacings (for example, 15kHz, 130kHz, 60kHz and 120kHz), and the multiple subcarrier spacings can respectively correspond to corresponding DMRS patterns, so that the terminal device can determine the corresponding DMRS pattern based on the subcarrier spacing used by the first channel.

[0155] For another example, the terminal device may support different CP types, such as normal CP and extended CP. Different CP types may correspond to different DMRS patterns. Thus, the terminal device may determine the corresponding DMRS pattern based on the CP type used by the first channel.

[0156] For another example, different CP lengths may correspond to corresponding DMRS patterns. In this way, the terminal device may determine the corresponding DMRS pattern based on the length of the CP used by the first channel.

[0157] It should be understood that the above method of indirectly indicating the DMRS pattern through the basic parameter set of the first channel, such as the subcarrier spacing, CP type or CP length, is only an example and should not constitute any limitation to the embodiments of the present application. The terminal device can also determine the DMRS pattern based on other parameters used to transmit the first channel, such as the number of time domain symbols occupied by the first channel, the number of time domain symbols occupied by the subframe or time slot where the first channel is located, etc.

[0158] Similar to the aforementioned first correspondence, second correspondence and third correspondence, the fourth correspondence may also be pre-configured on the terminal device, or may be configured by the network device, which is not limited in the embodiments of the present application.

[0159] It should be understood that in an embodiment of the present application, if the first correspondence, the second correspondence, the third correspondence and the fourth correspondence are configured by a network device, the network device can configure the first correspondence, the second correspondence, the third correspondence and the fourth correspondence through the same configuration information, or can configure the first correspondence, the second correspondence, the third correspondence and the fourth correspondence through multiple configuration information. The embodiment of the present application does not limit this.

[0160] It should be noted that in the embodiments of the present application, the corresponding DMRS pattern of PSCCH or PSSCH can be determined by the methods described in the above embodiments 1 to 4, or the corresponding DMRS pattern can be determined by combining at least two of the methods in embodiments 1 to 4. The embodiments of the present application are not limited to this.

[0161] For example, the terminal device may, upon receiving the configuration information sent by the network device, give priority to transmitting data according to the DMRS pattern indicated by the configuration information sent by the network device; or, the terminal device may, upon not receiving the configuration information sent by the network device, determine the DMRS pattern corresponding to the first channel based on at least one of the resource pool, carrier and waveform used by the first channel.

[0162] Optionally, in an embodiment of the present application, the terminal device may also be configured with a correspondence between at least two of the resource pool, carrier and waveform and the DMRS sequence. Therefore, the terminal device can determine the DMRS sequence corresponding to the first channel based on at least two of the resource pool, carrier and waveform used by the first channel and the above correspondence. The specific implementation method can refer to the relevant description in the aforementioned embodiment and will not be repeated here.

[0163] For example, the DMRS patterns corresponding to the two waveforms, CP-OFDM and DFT-OFDM, are configured through pre-configuration or network configuration. Under each waveform, different resource pools can also correspond to different DMRS patterns. In this way, the terminal device can determine the target DMRS pattern used by the channel based on the waveform used by the channel and the resource pool used. For example, the corresponding relationship can be shown in Table 1.

[0164]

[0165] For example, if the waveform used by the first channel is DFT-OFDM and the resource pool used is the third resource pool, then in combination with Table 1, the terminal device can determine that the target DMRS pattern used by the first channel is the third DMRS pattern.

[0166] Therefore, in the method for transmitting data in the Internet of Vehicles of an embodiment of the present application, the terminal device can determine the DMRS pattern corresponding to the first channel based on the configuration of the network device, the resource pool used to transmit the first channel, and at least one of the carrier and waveform, thereby realizing flexible configuration of the DMRS pattern.

[0167] Optionally, in some scenarios, the DMRS pattern corresponding to the PSCCH may be predetermined, for example, determined according to the methods described in Examples 1 to 5 above. In some embodiments, the terminal device may also determine the DMRS sequence corresponding to the PSSCH based on the PSCCH corresponding to the PSSCH. The specific implementation method for determining the DMRS sequence corresponding to the PSSCH based on the PSCCH is described in detail below in conjunction with Examples 6 to 9.

[0168] Embodiment 6: The DMRS sequence corresponding to the PSSCH is explicitly indicated through indication information in the PSCCH.

[0169] Specifically, the PSCCH can carry indication information, and the indication information is used to indicate the DMRS pattern corresponding to the PSSCH. After the terminal device receives the PSCCH, it can demodulate the PSCCH according to the DMRS pattern corresponding to the PSCCH and obtain the indication information included in the PSCCH. Furthermore, it can be determined that the DMRS pattern indicated by the indication information is the DMRS pattern corresponding to the PSSCH.

[0170] Similar to the above-mentioned embodiment, the terminal device may also be configured with multiple DMRS patterns, which are DMRS patterns corresponding to PSSCH. The terminal device may indicate the DMRS pattern adopted by PSSCH by carrying indication information in PSCCH. Optionally, the indication information may be K bits of indication information, and the specific length may be determined according to the number of multiple DMRS patterns. This embodiment of the present application does not limit this.

[0171] Embodiment 7: The DMRS sequence corresponding to the PSSCH is implicitly indicated by the DMRS of the PSCCH.

[0172] In this embodiment 7, the terminal device can indirectly indicate the DMRS pattern corresponding to the PSSCH through the DMRS of the PSCCH. Optionally, at least one of the sequence, cyclic shift, orthogonal cover code (OCC), resource position, and root sequence of the DMRS of the PSCCH can have a fifth corresponding relationship with the DMRS pattern of the PSSCH. In this way, the terminal device can determine the DMRS sequence used by the PSSCH based on at least one of the sequence, cyclic shift, orthogonal cover code (OCC), resource position, and root sequence of the DMRS used by the PSCCH, combined with the fifth corresponding relationship. The specific implementation process is similar to the implementation method described in Examples 2 to 5 and will not be repeated here. Among them, the sequence, cyclic shift, orthogonal cover code (OCC), resource position, and root sequence of the DMRS used by the PSCCH of the terminal device can be configured by the network, or selected autonomously by the terminal. The fifth corresponding relationship can be pre-configured in the network terminal device, or configured by the network.

[0173] Embodiment 8: The DMRS pattern corresponding to the PSSCH is implicitly indicated through the scrambling code information of the PSCCH.

[0174] Specifically, the terminal device can scramble the information bits of the PSCCH, so the terminal device can implicitly indicate the DMRS pattern corresponding to the PSSCH through different scrambling code information (or scrambling code sequence). Optionally, the scrambling code information of the PSCCH can have a sixth correspondence with the DMRS pattern of the PSSCH. In this way, the terminal device can determine the DMRS pattern used by the PSSCH based on the PSCCH scrambling code information and the sixth correspondence. Further, the terminal device can transmit data based on the DMRS pattern. The scrambling code information (or scrambling code sequence) used by the PSCCH of the terminal device can be configured by the network or selected autonomously by the terminal. The sixth correspondence can be pre-configured in the network terminal device or configured by the network.

[0175] Optionally, the scrambling code information of the PSCCH may be determined by a Radio Network Temporary Identity (RNTI), where the RNTI may include one of the following, for example, a Cell Radio Network Temporary Identifier (C-RNTI) or a paging RNTI (PagingRNTI, P-RNTI), etc. This embodiment of the present application is not limited to this.

[0176] Embodiment 9: implicitly indicating the DMRS pattern corresponding to the PSSCH through the mask information of the PSCCH.

[0177] Specifically, after the information bits of the PSCCH are scrambled, they can also be masked. Therefore, the terminal device can implicitly indicate the DMRS pattern corresponding to the PSSCH through different mask information (or mask sequences). Optionally, the mask information of the PSCCH can have a seventh correspondence with the DMRS pattern of the PSSCH. In this way, the terminal device can determine the DMRS pattern used by the PSSCH based on the PSCCH mask information and the seventh correspondence. Further, the terminal device can perform data transmission based on the DMRS pattern. The mask information (or mask sequence) used by the PSCCH of the terminal device can be configured by the network or selected autonomously by the terminal. The seventh correspondence can be pre-configured in the network terminal device or configured by the network.

[0178] In summary, the terminal device can determine the DMRS pattern corresponding to the PSCCH according to the methods described in Examples 1 to 5, and can also determine the DMRS pattern corresponding to the PSSCH according to the methods described in Examples 1 to 5, or the terminal device can determine the DMRS pattern corresponding to the PSCCH according to the methods described in Examples 1 to 5, and determine the DMRS pattern corresponding to the PSSCH according to the methods described in Examples 6 and 9. The embodiments of the present application are not limited to this.

[0179] Combined with the above Figure 2 , describes in detail the method for transmitting data according to an embodiment of the present application from the perspective of a terminal device, and the following text is combined with Figure 3 , a method for transmitting data according to another embodiment of the present application is described in detail from the perspective of a network device. It should be understood that the description on the network device side corresponds to the description on the terminal device side. Similar descriptions can be found above. To avoid repetition, they are not repeated here.

[0180] Figure 3is a schematic flow chart of a method 300 for transmitting data according to another embodiment of the present application. The method 300 may be Figure 1 The network devices in the Internet of Vehicles system shown in FIG. Figure 3 As shown, the method 300 includes the following contents:

[0181] S310, the network device determines configuration information, where the configuration information is used by the terminal device to determine a demodulation reference signal (DMRS) pattern corresponding to a first channel;

[0182] S320: The network device sends the configuration information to the terminal device.

[0183] Optionally, in some embodiments, the configuration information is used to indicate a first DMRS pattern among multiple DMRS patterns.

[0184] Optionally, in some embodiments, the method further comprises:

[0185] The network device configures the multiple DMRS patterns for the terminal device.

[0186] Optionally, in some embodiments, the configuration information is used to indicate a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between multiple resource pools and multiple DMRS patterns.

[0187] Optionally, in some embodiments, the configuration information is used to indicate a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

[0188] Optionally, in some embodiments, the configuration information is used to indicate a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0189] Optionally, in some embodiments, the configuration information is used to indicate a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

[0190] Optionally, in some embodiments, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

[0191] Optionally, in some embodiments, the first channel is a physical sidelink control channel PSCCH.

[0192] Optionally, in some embodiments, the first channel is a physical sidelink shared channel PSSCH, and a physical sidelink control channel PSCCH corresponding to the first channel is a second channel.

[0193] Optionally, in some embodiments, the configuration information is used to indicate the correspondence between at least one of the sequence, cyclic shift, orthogonal cover code OCC, resource location, and root sequence of the DMRS corresponding to the second channel and the DMRS sequence.

[0194] Optionally, in some embodiments, the configuration information is used to indicate a correspondence between the scrambling code information of the second channel and a DMRS sequence.

[0195] Optionally, in some embodiments, the configuration information is used to indicate a correspondence between the mask information of the second channel and a DMRS sequence.

[0196] Optionally, in some embodiments, the DMRS pattern includes at least one of the following:

[0197] The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit;

[0198] The position of the OFDM symbol occupied by the DMRS within a time unit;

[0199] The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0200] The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS;

[0201] An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS;

[0202] The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS;

[0203] In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

[0204] Combined with the above Figure 2 and Figure 3 , describes the method embodiment of the present application in detail, and the following is combined with Figures 4 to 7 , the device embodiments of the present application are described in detail. It should be understood that the device embodiments and the method embodiments correspond to each other, and similar descriptions can refer to the method embodiments.

[0205] Figure 4 FIG. 4 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 4 As shown, the terminal device 400 includes:

[0206] A determination module 410 is configured to determine a demodulation reference signal (DMRS) pattern corresponding to a first channel;

[0207] The demodulation module 420 is configured to demodulate the first channel according to the DMRS pattern.

[0208] Optionally, in some embodiments, the determining module 410 is configured to:

[0209] A DMRS pattern corresponding to the first channel is determined according to at least one of configuration information sent by a network device, a resource pool used by the first channel, a carrier used by the first channel, and a waveform used by the first channel.

[0210] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0211] If the configuration information indicates a first DMRS pattern, the first DMRS pattern is determined to be a DMRS pattern corresponding to the first channel among multiple DMRS patterns.

[0212] Optionally, in some embodiments, the multiple DMRS patterns are pre-configured on the terminal device or configured by the network device.

[0213] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0214] A DMRS pattern corresponding to the first channel is determined according to a resource pool used by the first channel and a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between multiple resource pools and multiple DMRS patterns.

[0215] Optionally, in some embodiments, the multiple resource pools correspond to multiple speed ranges respectively, and the determining module 410 is further configured to:

[0216] A corresponding target resource pool is determined according to the current moving speed, where the target resource pool is the resource pool used by the first channel.

[0217] Optionally, in some embodiments, the first corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0218] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0219] A DMRS pattern corresponding to the first channel is determined according to a carrier used by the first channel and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

[0220] Optionally, in some embodiments, the second corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0221] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0222] The terminal device determines the DMRS pattern corresponding to the first channel based on the waveform used by the first channel and a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0223] Optionally, in some embodiments, the third corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0224] Optionally, in some embodiments, the determination module is further configured to: determine a DMRS pattern corresponding to the first channel according to a basic parameter set used by the first channel.

[0225] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0226] The DMRS pattern corresponding to the first channel is determined according to the basic parameter set used by the first channel and a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

[0227] Optionally, in some embodiments, the fourth corresponding relationship is pre-configured on the terminal device or configured by the network device.

[0228] Optionally, in some embodiments, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

[0229] Optionally, in some embodiments, the first channel is a physical sidelink shared channel PSSCH, or the first channel is a physical sidelink control channel PSCCH.

[0230] Optionally, in some embodiments, the first channel is a physical sidelink shared channel PSSCH, a physical sidelink control channel PSCCH corresponding to the first channel is a second channel, and the determining module 410 is configured to:

[0231] Determine a DMRS pattern corresponding to the first channel according to the second channel.

[0232] Optionally, in some embodiments, the second channel carries indication information, where the indication information is used to indicate a second DMRS pattern, and the determining module is specifically configured to:

[0233] Determine that the second DMRS pattern indicated by the indication information is the DMRS pattern corresponding to the first channel.

[0234] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0235] The DMRS pattern corresponding to the first channel is determined according to at least one of the sequence, cyclic shift, orthogonal cover code OCC, resource position, and root sequence of the DMRS corresponding to the second channel.

[0236] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0237] Determine a DMRS pattern corresponding to the first channel according to the scrambling code information of the second channel.

[0238] Optionally, in some embodiments, the determining module 410 is specifically configured to:

[0239] Determine a DMRS pattern corresponding to the first channel according to the mask information of the second channel.

[0240] Optionally, in some embodiments, the DMRS pattern includes at least one of the following:

[0241] The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit;

[0242] The position of the OFDM symbol occupied by the DMRS within a time unit;

[0243] The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0244] The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS;

[0245] An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS;

[0246] The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS;

[0247] In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

[0248] It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the terminal device 400 are respectively to achieve Figure 2 For the sake of brevity, the corresponding processes of the terminal device in the method 200 are not repeated here.

[0249] Figure 5 It is a schematic block diagram of a network device according to an embodiment of the present application. Figure 5 The network device 500 includes:

[0250] A determination module 510 is configured to determine configuration information, where the configuration information is used by a terminal device to determine a demodulation reference signal (DMRS) pattern corresponding to a first channel.

[0251] The communication module 520 is configured to send the configuration information to the terminal device.

[0252] Optionally, in some embodiments, the configuration information is used to indicate a first DMRS pattern among multiple DMRS patterns.

[0253] Optionally, in some embodiments, the communication module 520 is further configured to:

[0254] The terminal device is configured with the multiple DMRS patterns.

[0255] Optionally, in some embodiments, the configuration information is used to indicate a first corresponding relationship, wherein the first corresponding relationship is a corresponding relationship between multiple resource pools and multiple DMRS patterns.

[0256] Optionally, in some embodiments, the configuration information is used to indicate a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

[0257] Optionally, in some embodiments, the configuration information is used to indicate a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

[0258] Optionally, in some embodiments, the configuration information is used to indicate a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

[0259] Optionally, in some embodiments, the basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

[0260] Optionally, in some embodiments, the first channel is a physical sidelink control channel PSCCH.

[0261] Optionally, in some embodiments, the first channel is a physical sidelink shared channel PSSCH, and a physical sidelink control channel PSCCH corresponding to the first channel is a second channel.

[0262] Optionally, in some embodiments, the configuration information is used to indicate the correspondence between at least one of the sequence, cyclic shift, orthogonal cover code OCC, resource location, and root sequence of the DMRS corresponding to the second channel and the DMRS sequence.

[0263] Optionally, in some embodiments, the configuration information is used to indicate a correspondence between the scrambling code information of the second channel and a DMRS sequence.

[0264] Optionally, in some embodiments, the configuration information is used to indicate a correspondence between the mask information of the second channel and a DMRS sequence.

[0265] Optionally, in some embodiments, the DMRS pattern includes at least one of the following:

[0266] The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit;

[0267] The position of the OFDM symbol occupied by the DMRS within a time unit;

[0268] The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS;

[0269] The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS;

[0270] An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS;

[0271] The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS;

[0272] In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

[0273] Specifically, the network device 500 may correspond to (for example, may be configured in or may itself be) the network device described in the above method 300, and each module or unit in the network device 500 is respectively used to execute each action or processing process performed by the network device in the above method 300. Here, in order to avoid redundancy, its detailed description is omitted.

[0274] like Figure 6 As shown, the embodiment of the present application further provides a terminal device 600, which can be Figure 4 The terminal device 400 in Figure 2 The terminal device 600 includes an input interface 610, an output interface 620, a processor 630, and a memory 640. The input interface 610, the output interface 620, the processor 630, and the memory 640 can be connected via a bus system. The memory 640 is used to store programs, instructions, or codes. The processor 630 is used to execute the programs, instructions, or codes in the memory 640 to control the input interface 610 to receive signals, control the output interface 620 to send signals, and perform the operations in the aforementioned method embodiment.

[0275] It should be understood that in the embodiment of the present application, the processor 630 may be a central processing unit (CPU). The processor 630 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0276] The memory 640 may include a read-only memory and a random access memory, and provides instructions and data to the processor 630. A portion of the memory 640 may also include a non-volatile random access memory. For example, the memory 640 may also store device type information.

[0277] During implementation, the various contents of the above method can be completed by the hardware integrated logic circuit in the processor 630 or by instructions in the form of software. The contents of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 640, and the processor 630 reads the information in the memory 640 and completes the contents of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0278] In a specific embodiment, Figure 4 The determining module 410 included in the terminal device 400 can be used Figure 6 The processor 630 implements, Figure 4The demodulation module 420 included in the terminal device 400 can be used Figure 6 The input interface 610 and the output interface 620 are implemented.

[0279] like Figure 7 As shown, the embodiment of the present application further provides a network device 700, which can be Figure 5 The network device 500 in Figure 3 The network device 700 includes an input interface 710, an output interface 720, a processor 730, and a memory 740. The input interface 710, the output interface 720, the processor 730, and the memory 740 can be connected via a bus system. The memory 740 is used to store programs, instructions, or codes. The processor 730 is used to execute the programs, instructions, or codes in the memory 740 to control the input interface 710 to receive signals, control the output interface 720 to send signals, and perform the operations in the aforementioned method embodiment.

[0280] It should be understood that in the embodiments of the present application, the processor 730 may be a central processing unit (CPU). The processor 730 may also be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc.

[0281] The memory 740 may include a read-only memory and a random access memory, and provides instructions and data to the processor 730. A portion of the memory 740 may also include a non-volatile random access memory. For example, the memory 740 may also store device type information.

[0282] During implementation, the various contents of the above method can be completed by the hardware integrated logic circuit in the processor 730 or by instructions in the form of software. The contents of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor. The software module can be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 740, and the processor 730 reads the information in the memory 740 and completes the contents of the above method in conjunction with its hardware. To avoid repetition, it will not be described in detail here.

[0283] In a specific embodiment, Figure 5 The determining module 510 included in the network device 500 can be used Figure 7 The processor 730 implements, Figure 5 The communication module 520 included in the network device 500 can be used Figure 7 The input interface 710 and the output interface 720 are implemented.

[0284] Figure 8 It is a schematic structural diagram of the chip of an embodiment of the present application. Figure 8 The chip 800 shown includes a processor 810, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0285] Alternatively, as Figure 8 As shown, the chip 800 may further include a memory 820. The processor 810 may call and execute a computer program from the memory 820 to implement the method in the embodiment of the present application.

[0286] The memory 820 may be a separate device independent of the processor 810 , or may be integrated into the processor 810 .

[0287] Optionally, the chip 800 may further include an input interface 830. The processor 810 may control the input interface 830 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0288] Optionally, the chip 800 may further include an output interface 840. The processor 810 may control the output interface 840 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0289] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0290] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0291] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0292] Figure 9 is a schematic block diagram of a communication system 900 provided in an embodiment of the present application. Figure 8As shown, the communication system 900 includes a terminal device 910 and a network device 920 .

[0293] Among them, the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they are not repeated here.

[0294] It should be understood that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, the steps of the above-described method embodiments may be completed by hardware integrated logic circuits in the processor or by software instructions. The above-described processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present application may be directly implemented and executed by a hardware decoding processor, or by a combination of hardware and software modules in the decoding processor. The software modules may be located in a storage medium known in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. The storage medium is located in a memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above-described method.

[0295] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous DRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0296] It should be understood that the above-mentioned memories are exemplary and not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0297] The embodiment of the present application also provides a computer-readable storage medium, which stores one or more programs, wherein the one or more programs include instructions, which, when executed by a portable electronic device including multiple application programs, can enable the portable electronic device to execute Figure 2 and Figure 3 The method of the embodiment shown.

[0298] The present application also provides a computer program comprising instructions, which, when executed by a computer, enables the computer to execute Figure 2 and Figure 3 The corresponding process of the method of the embodiment shown.

[0299] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0300] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0301] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0302] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0303] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0304] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0305] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for transmitting data, characterized in that: include: The terminal device determines the demodulation reference signal DMRS pattern corresponding to the physical side shared channel PSSCH; The terminal device determines a second DMRS pattern from the DMRS pattern corresponding to the PSSCH according to indication information carried in a physical sidelink control channel PSCCH corresponding to the PSSCH; The terminal device demodulates the PSSCH according to the second DMRS pattern, The indication information includes K bits, and the length of the K bits is determined based on the number of DMRS patterns corresponding to the PSSCH.

2. The method according to claim 1, characterized in that The terminal device determines a demodulation reference signal DMRS pattern corresponding to the PSSCH, including: The terminal device determines one or more DMRS patterns corresponding to the PSSCH based on at least one of the configuration information sent by the network device, the resource pool used by the PSSCH, the carrier used by the PSSCH, and the waveform used by the PSSCH.

3. The method according to claim 2, characterized in that The terminal device determines one or more DMRS patterns corresponding to the PSSCH according to at least one of the configuration information sent by the network device, the resource pool used by the PSSCH, the carrier used by the PSSCH, and the waveform used by the PSSCH, including: The terminal device determines the DMRS pattern corresponding to the PSSCH based on a first correspondence between the resource pool used by the PSSCH and the network configuration, wherein the first correspondence is at least one of the following: a correspondence between a resource pool and a DMRS pattern, a correspondence between a resource pool and multiple DMRS patterns, a correspondence between multiple resource pools and a DMRS pattern, or a correspondence between multiple resource pools and multiple DMRS patterns.

4. The method according to claim 3, characterized in that The multiple resource pools correspond to multiple speed ranges respectively, and the method further includes: The terminal device determines the corresponding target resource pool according to the current moving speed, and the target resource pool is the resource pool used by the PSSCH.

5. The method according to claim 3 or 4, characterized in that The first corresponding relationship is pre-configured on the terminal device or configured by the network device.

6. The method according to any one of claims 2 to 4, characterized in that The terminal device determines, according to at least one of the configuration information sent by the network device, the resource pool used by the PSSCH, the carrier used by the PSSCH, and the waveform used by the PSSCH, the DMRS pattern corresponding to the PSSCH, including: The terminal device determines the DMRS pattern corresponding to the PSSCH based on the carrier used by the PSSCH and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

7. The method according to claim 6, characterized in that The second corresponding relationship is pre-configured on the terminal device or configured by the network device.

8. The method according to any one of claims 2 to 4, characterized in that The terminal device determines, according to at least one of the configuration information sent by the network device, the resource pool used by the PSSCH, the carrier used by the PSSCH, and the waveform used by the PSSCH, the DMRS pattern corresponding to the PSSCH, including: The terminal device determines the DMRS pattern corresponding to the PSSCH based on the waveform used by the PSSCH and a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

9. The method according to claim 8, characterized in that The third corresponding relationship is pre-configured on the terminal device or configured by the network device.

10. The method according to any one of claims 1 to 4, characterized in that The terminal device determines a demodulation reference signal DMRS pattern corresponding to the PSSCH, including: The terminal device determines the DMRS pattern corresponding to the PSSCH based on the basic parameter set used by the PSSCH.

11. The method according to claim 10, characterized in that The terminal device determines, according to the basic parameter set used by the PSSCH, a DMRS pattern corresponding to the PSSCH, including: The terminal device determines the DMRS pattern corresponding to the PSSCH based on the basic parameter set used by the PSSCH and a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

12. The method according to claim 11, characterized in that The fourth corresponding relationship is pre-configured on the terminal device or configured by the network device.

13. The method according to claim 10, characterized in that The basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

14. The method according to any one of claims 1 to 4, characterized in that The DMRS pattern includes at least one of the following: The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit; The position of the OFDM symbol occupied by the DMRS within a time unit; The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS; The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS; An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS; The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS; In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

15. A method for transmitting data, characterized in that: include: The network device determines configuration information, where the configuration information is used by the terminal device to determine a demodulation reference signal (DMRS) pattern corresponding to a physical sidelink shared channel (PSSCH); The network device sends the configuration information to the terminal device, so that the terminal device determines the DMRS pattern corresponding to the PSSCH, determines a second DMRS pattern from the DMRS pattern corresponding to the PSSCH according to indication information carried in a physical side control channel PSCCH corresponding to the PSSCH, and demodulates the PSSCH according to the second DMRS pattern. The indication information includes K bits, and the length of the K bits is determined based on the number of DMRS patterns corresponding to the PSSCH.

16. The method according to claim 15, characterized in that The configuration information is used to indicate a first DMRS pattern among multiple DMRS patterns.

17. The method according to claim 16, characterized in that The method further comprises: The network device configures the multiple DMRS patterns for the terminal device.

18. The method according to claim 15 or 17, characterized in that The configuration information is used to indicate a first correspondence, wherein the first correspondence is at least one of the following: a correspondence between a resource pool and a DMRS pattern, a correspondence between a resource pool and multiple DMRS patterns, a correspondence between multiple resource pools and a DMRS pattern, or a correspondence between multiple resource pools and multiple DMRS patterns.

19. The method according to any one of claims 15 to 17, characterized in that The configuration information is used to indicate a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

20. The method according to any one of claims 15 to 17, characterized in that The configuration information is used to indicate a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

21. The method according to any one of claims 15 to 17, characterized in that The configuration information is used to indicate a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

22. The method according to claim 21, characterized in that The basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

23. The method according to any one of claims 15 to 17, characterized in that The DMRS pattern includes at least one of the following: The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit; The position of the OFDM symbol occupied by the DMRS within a time unit; The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS; The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS; An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS; The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS; In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

24. A terminal device, characterized in that: include: a determination module, configured to determine a demodulation reference signal DMRS pattern corresponding to a physical sidelink shared channel PSSCH, and determine a second DMRS pattern from the DMRS patterns corresponding to the PSSCH according to indication information carried in a physical sidelink control channel PSCCH corresponding to the PSSCH; A demodulation module, configured to demodulate the PSSCH according to the second DMRS pattern, The indication information includes K bits, and the length of the K bits is determined based on the number of DMRS patterns corresponding to the PSSCH.

25. The terminal device according to claim 24, characterized in that The determining module is used for: One or more DMRS patterns corresponding to the PSSCH are determined according to at least one of the configuration information sent by the network device, the resource pool used by the PSSCH, the carrier used by the PSSCH, and the waveform used by the PSSCH.

26. The terminal device according to claim 25, characterized in that The determining module is specifically configured to: According to the first correspondence between the resource pool used by the PSSCH and the network configuration, the DMRS pattern corresponding to the PSSCH is determined, wherein the first correspondence is at least one of the following: a correspondence between a resource pool and a DMRS pattern, a correspondence between a resource pool and multiple DMRS patterns, a correspondence between multiple resource pools and one DMRS pattern, or a correspondence between multiple resource pools and multiple DMRS patterns.

27. The terminal device according to claim 26, characterized in that The multiple resource pools correspond to multiple speed ranges respectively, and the determination module is further configured to: According to the current moving speed, a corresponding target resource pool is determined, where the target resource pool is the resource pool used by the PSSCH.

28. The terminal device according to claim 26 or 27, characterized in that: The first corresponding relationship is pre-configured on the terminal device or configured by the network device.

29. The terminal device according to any one of claims 25 to 27, characterized in that: The determining module is specifically configured to: The DMRS pattern corresponding to the PSSCH is determined according to the carrier used by the PSSCH and a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

30. The terminal device according to claim 29, characterized in that The second corresponding relationship is pre-configured on the terminal device or configured by the network device.

31. The terminal device according to any one of claims 25 to 27, characterized in that: The determining module is specifically configured to: The terminal device determines the DMRS pattern corresponding to the PSSCH based on the waveform used by the PSSCH and a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

32. The terminal device according to claim 31, characterized in that The third corresponding relationship is pre-configured on the terminal device or configured by the network device.

33. The terminal device according to any one of claims 24 to 27, characterized in that: The determining module is further configured to determine a DMRS pattern corresponding to the PSSCH according to a basic parameter set used by the PSSCH.

34. The terminal device according to claim 33, characterized in that The determining module is specifically configured to: The DMRS pattern corresponding to the PSSCH is determined according to the basic parameter set used by the PSSCH and a fourth corresponding relationship, where the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

35. The terminal device according to claim 34, characterized in that The fourth corresponding relationship is pre-configured on the terminal device or configured by the network device.

36. The terminal device according to claim 33, characterized in that The basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

37. The terminal device according to any one of claims 24 to 27, characterized in that: The DMRS pattern includes at least one of the following: The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit; The position of the OFDM symbol occupied by the DMRS within a time unit; The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS; The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS; An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS; The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS; In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

38. A network device, characterized in that: include: A determination module, configured to determine configuration information, wherein the configuration information is used by the terminal device to determine a demodulation reference signal DMRS pattern corresponding to a physical side shared channel PSSCH; a communication module, configured to send the configuration information to the terminal device, so that the terminal device determines the DMRS pattern corresponding to the PSSCH, determines a second DMRS pattern from the DMRS pattern corresponding to the PSSCH according to the indication information carried in the physical side control channel PSCCH corresponding to the PSSCH, and demodulates the PSSCH according to the second DMRS pattern. The indication information includes K bits, and the length of the K bits is determined based on the number of DMRS patterns corresponding to the PSSCH.

39. The network device according to claim 38, wherein: The configuration information is used to indicate a first DMRS pattern among multiple DMRS patterns.

40. The network device according to claim 39, wherein: The communication module is also used for: The terminal device is configured with the multiple DMRS patterns.

41. The network device according to claim 38 or 40, characterized in that: The configuration information is used to indicate a first correspondence, wherein the first correspondence is at least one of the following: a correspondence between a resource pool and a DMRS pattern, a correspondence between a resource pool and multiple DMRS patterns, a correspondence between multiple resource pools and a DMRS pattern, or a correspondence between multiple resource pools and multiple DMRS patterns.

42. The network device according to any one of claims 38 to 40, characterized in that: The configuration information is used to indicate a second corresponding relationship, wherein the second corresponding relationship is a corresponding relationship between multiple carriers and multiple DMRS patterns.

43. The network device according to any one of claims 38 to 40, characterized in that The configuration information is used to indicate a third corresponding relationship, wherein the third corresponding relationship is a corresponding relationship between multiple waveforms and multiple DMRS patterns.

44. The network device according to any one of claims 38 to 40, characterized in that The configuration information is used to indicate a fourth corresponding relationship, wherein the fourth corresponding relationship is a corresponding relationship between multiple basic parameter sets and multiple DMRS patterns.

45. The network device according to claim 44, characterized in that The basic parameter set includes at least one of the following information: subcarrier spacing information, cyclic prefix CP type, and CP length.

46. The network device according to any one of claims 38 to 40, characterized in that The DMRS pattern includes at least one of the following: The number of orthogonal frequency division multiplexing (OFDM) symbols occupied by DMRS in one time unit; The position of the OFDM symbol occupied by the DMRS within a time unit; The number of resource elements (REs) occupied by the DMRS in a physical resource block (PRB) within an OFDM symbol occupied by the DMRS; The frequency domain spacing between DMRS symbols in a PRB within an OFDM symbol occupied by the DMRS; An offset of a DMRS symbol in a PRB relative to a first subcarrier in the PRB within an OFDM symbol occupied by the DMRS; The frequency domain position of the DMRS within an OFDM symbol occupied by the DMRS; In the OFDM symbol where the DMRS is located, whether REs not occupied by the DMRS can be used to transmit other signals except the DMRS.

47. A terminal device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 1 to 14.

48. A chip, characterized in that include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 1 to 14.

49. A computer-readable storage medium, characterized in that Used to store a computer program, wherein the computer program causes a computer to execute the method according to any one of claims 1 to 14.

50. A computer program product, characterized in that The method comprises computer program instructions for causing a computer to execute the method according to any one of claims 1 to 14.

51. A network device, characterized in that: include: A processor and a memory, the memory being used to store a computer program, the processor being used to call and run the computer program stored in the memory to execute the method according to any one of claims 15 to 23.

52. A chip, characterized in that: include: A processor, configured to call and run a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 15 to 23.

53. A computer-readable storage medium, characterized in that Used to store a computer program, the computer program causing a computer to execute the method according to any one of claims 15 to 23.

54. A computer program product, characterized in that The method comprises computer program instructions for causing a computer to perform the method according to any one of claims 15 to 23.

55. A communication system, characterized in that include: The terminal device according to any one of claims 24 to 37; as well as A network device as claimed in any one of claims 38 to 46.

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