Data receiving method, data sending method, communication apparatus and storage medium

Abstract

Provided are a data receiving method, a data sending method, and a communication apparatus and a storage medium. The data receiving method comprises: receiving first signaling sent by a second communication node, wherein the first signaling is used for indicating a data transmission scheme, and the data transmission scheme comprises a coding scheme and / or a modulation scheme; and on the basis of the data transmission scheme indicated by the first signaling, receiving data sent by the second communication node.

Description

Data receiving and sending method, communication device and storage medium

[0001] This disclosure claims priority to Chinese patent application No. 202311655951.8, filed on December 1, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a data receiving and sending method, a communication device, and a storage medium. Background Art

[0003] Wireless communication systems are widely used in our daily lives and production. For example, they are used for video transmission, voice transmission, positioning, machine-to-machine communication in the industrial field, device-to-device communication, and communication between vehicles and other devices in the Internet of Vehicles (IoV). These increasing applications are placing increasingly stringent demands on the data transmission performance of wireless communication technologies, such as efficiency and reliability.

[0004] Summary of the Invention

[0005] In a first aspect, an embodiment of the present disclosure provides a data receiving method. The data receiving method includes:

[0006] receiving first signaling sent by a second communication node, where the first signaling is used to indicate a data transmission scheme, where the data transmission scheme includes a coding scheme and / or a modulation scheme;

[0007] According to the data transmission scheme indicated by the first signaling, data sent by the second communication node is received.

[0008] In a second aspect, an embodiment of the present disclosure provides a data transmission method. The data transmission method includes:

[0009] Sending a first signaling to the first communication node, where the first signaling is used to indicate a data transmission scheme, where the data transmission scheme includes a coding scheme and / or a modulation scheme;

[0010] Data is sent to the first communication node according to the data transmission scheme indicated by the first signaling.

[0011] In a third aspect, an embodiment of the present disclosure provides a communication device. The communication device includes: a first receiving module and a second receiving module;

[0012] A first receiving module is configured to receive a first signaling sent by a second communication node, where the first signaling is used to indicate a data transmission scheme, where the data transmission scheme includes a coding scheme and / or a modulation scheme;

[0013] The second receiving module is used to receive data sent by the second communication node according to the data transmission scheme indicated by the first signaling.

[0014] In a fourth aspect, an embodiment of the present disclosure provides another communication device. The communication device includes: a first sending module and a second sending module;

[0015] A first sending module, configured to send a first signaling to a first communication node, where the first signaling is used to indicate a data transmission scheme, where the data transmission scheme includes a coding scheme and / or a modulation scheme;

[0016] The second sending module is used to send data to the first communication node according to the data transmission scheme indicated by the first signaling.

[0017] In a fifth aspect, embodiments of the present disclosure further provide a communication device. The communication device includes: a memory and a processor; the memory and the processor are coupled; the memory is configured to store instructions executable by the processor; and when the processor executes the instructions, it performs any of the methods provided in the first or second aspects.

[0018] In a sixth aspect, an embodiment of the present disclosure provides a computer program product comprising computer instructions, which, when executed on a computer, enables the computer to execute any one of the methods provided in the first aspect or the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the technical solution of the present disclosure and constitute a part of the specification. Together with the embodiments of the present disclosure, they are used to explain the technical solution of the present disclosure and do not constitute a limitation to the technical solution of the present disclosure.

[0020] FIG1 is a schematic diagram of the architecture of a communication system according to some embodiments.

[0021] FIG2 is a schematic flow chart of a data receiving method according to some embodiments.

[0022] FIG3 is a schematic flow chart of a data sending method according to some embodiments.

[0023] FIG4 is a schematic diagram illustrating components of a communication device according to some embodiments.

[0024] FIG5 is a schematic diagram illustrating the composition of another communication device according to some embodiments.

[0025] FIG6 is a schematic structural diagram of a communication device according to some embodiments. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0027] In the description of this disclosure, unless otherwise specified, " / " means "or". For example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: only A, only B, and A and B. In addition, "at least one" means one or more, and "a plurality" means two or more. Expressions such as "first" and "second" do not limit the quantity and execution order, and expressions such as "first" and "second" do not necessarily limit them to be different.

[0028] It should be noted that, in this disclosure, expressions such as "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described in this disclosure as "exemplary" or "for example" should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of expressions such as "exemplarily" or "for example" is intended to present the relevant concepts in a detailed manner.

[0029] In wireless communication technologies, such as long-term evolution (LTE) and new radio (NR), orthogonal frequency division multiplexing (OFDM) technology is used for multi-carrier modulation, which can effectively combat frequency selective fading and overcome inter-symbol interference (ISI), thereby achieving high-speed data transmission. In OFDM technology, the smallest frequency domain unit is a subcarrier, and the smallest time domain unit is an OFDM symbol. In order to facilitate the use of frequency domain resources, a resource block (RB) is defined. A resource block includes a specific number of consecutive subcarriers. A bandwidth part (BWP) is also defined. A bandwidth includes a specific number of consecutive resource blocks on a carrier. In addition, in order to facilitate the use of time domain resources, a time slot is also defined. A time slot includes a specific number of consecutive OFDM symbols.

[0030] Currently, wireless communication technologies are subject to increasingly stringent requirements for data transmission performance, such as efficiency and reliability. In wireless communication systems, a transmitter can map a bit block of a transmission channel to a bit block of a physical channel, modulate the bit block of the physical channel into a complex-valued symbol block, and then transmit the symbols of the complex-valued symbol block through an antenna port. In response, a receiver receives the data.

[0031] Exemplarily, the bit block of the transmission channel is mapped to the bit block of the physical channel, the bit block of the physical channel is modulated into a complex-valued symbol block, and then the symbols in the complex-valued symbol block are mapped to one or more layers to generate a symbol block of one layer or a plurality of layers. A layer refers to a layer in multi-antenna spatial division multiplexing, which is used to transmit data, and symbols on different layers are transmitted through different antenna ports. The bit block of the transmission channel can be composed of one or more bits of the transmission channel, for example, the bit block of the transmission channel is the bit string of the transmission channel. The bit block of the physical channel is composed of one or more bits of the physical channel, for example, the bit block of the physical channel is the bit string of the physical channel. The modulated symbol block is composed of one or more symbols, for example, a symbol string. The symbol block of a layer is composed of one or more symbols (for example, a symbol string).

[0032] A bit block in a transmission channel is also called a transport block. Different transport blocks may come from different transmission tasks, and different transmission tasks have different transmission quality of service requirements. Therefore, different transport blocks may correspond to different transmission quality of service requirements. When using multiple antennas to transmit data in a spatial division multiplexing manner, one or more layers can be used to transmit data to improve data transmission efficiency. The channel states of different layers vary. For example, the energy of the signal received on each layer varies, the interference experienced by each layer varies, and the channel quality of each layer varies. The channel state of each layer varies differently in the frequency domain, and the channel state of each layer varies differently in the time domain.

[0033] However, current methods for specifying data transmission strategies often mismatch the strategies with the channel conditions at each layer. This can lead to reduced data transmission performance, such as decreased data transmission efficiency or accuracy. Therefore, designing data transmission methods that adapt the strategies to wireless channel conditions and improve data transmission performance is a pressing technical challenge.

[0034] In view of this, the present disclosure provides a data reception method, comprising: a first communication node receiving first signaling sent by a second communication node, the first signaling being used to indicate a data transmission scheme; the data transmission scheme including a coding scheme and / or a modulation scheme; and receiving data sent by the second communication node according to the data transmission scheme indicated by the first signaling. This method can make the data transmission scheme used for transmitting data more adaptable to channel conditions, thereby improving the data transmission performance of the communication system.

[0035] The method provided by the embodiment of the present disclosure can be applied to various communication systems. For example, the communication system can be a long-term evolution system, a 5G communication system, a Wi-Fi system, a communication system related to the third generation partnership project (3GPP), a future evolution communication system (such as a sixth generation (6G) communication system, etc.), or a system integrating multiple systems, etc., without limitation. The method provided by the embodiment of the present disclosure is described below using the communication system 100 shown in Figure 1 as an example. Figure 1 is only a schematic diagram and does not constitute a limitation on the applicable scenarios of the technical solution provided by the present disclosure.

[0036] Figure 1 is a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include one or more first communication nodes 11 and one or more second communication nodes 12. The second communication nodes 12 may be communicatively connected to the one or more first communication nodes 11.

[0037] In some embodiments, in the communication system 100, a first communication node and a second communication node communicate via a wireless channel. For example, the first communication node is a terminal device, the second communication node is a network device, and the network device and the terminal device communicate via a wireless channel. For another example, the first communication node is a terminal device, the second communication node is a wireless router, and the wireless router and the terminal device communicate via a wireless channel.

[0038] Network equipment can be used to implement functions such as resource scheduling, wireless resource management, and wireless access control of terminal devices. For example, it can be an evolution nodeB (eNB), a next-generation nodeB (gNB), a transmission receive point (TRP), a transmission point (TP), and some other access nodes. Depending on the size of the service coverage area provided, base stations can be divided into macro base stations for providing macro cells, micro base stations for providing micro cells (Pico cells), and femto base stations for providing femto cells. With the continuous evolution of wireless communication technology, future base stations may also adopt other names.

[0039] Terminal devices may also be referred to as terminals, user equipment (UE), mobile stations, mobile terminals, etc. For example, terminal devices may be mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality terminals, augmented reality terminals, wireless terminals used in industrial control, wireless terminals used in unmanned driving, wireless terminals used in remote surgery, wireless terminals used in transportation safety, wireless terminals used in smart cities, wireless terminals used in smart homes, etc. The embodiments of the present disclosure do not limit the device form factor used by the terminal.

[0040] For example, the first communication node is a first base station, the second communication node is a second base station, and the first base station and the second base station communicate via a wireless channel. For another example, the first communication node is a first terminal, the second communication node is a second terminal, and the first terminal and the second terminal communicate via a wireless channel. For another example, the first communication node is a repeater, the second communication node is a base station, and the base station and the repeater communicate via a wireless channel. For another example, the first communication node is a terminal, the second communication node is a repeater, and the repeater and the terminal communicate via a wireless channel. For another example, the first communication node is a first repeater, the second communication node is a second repeater, and the first repeater and the second repeater communicate via a wireless channel. For another example, the first communication node is a base station, the second communication node is a satellite, and the satellite and the base station communicate via a wireless channel. For another example, the first communication node is a satellite, the second communication node is a base station, and the base station and the satellite communicate via a wireless channel. For another example, the first communication node is a terminal, the second communication node is a satellite, and the satellite and the terminal communicate via a wireless channel. In another example, the first communication node is a satellite, the second communication node is a terminal, and the terminal and the satellite communicate via a wireless channel. In another example, the first communication node is a ground device, the second communication node is an aircraft, and the aircraft and the ground device communicate via a wireless channel. In another example, the first communication node is a first aircraft, the second communication node is a second aircraft, and the first and second aircraft communicate via a wireless channel.

[0041] In the communication process, for example, if a first communication node sends data to a second communication node, and the second communication node receives the data sent by the first communication node, the first communication node can be called the sending end. Accordingly, the second communication node can be called the receiving end. Alternatively, if a second communication node sends data to a first communication node, the first communication node can be called the receiving end. Accordingly, the second communication node can be called the sending end.

[0042] It should be noted that Figure 1 is only an exemplary framework diagram. The number of devices or nodes included in Figure 1 and the names of each device are not restricted. In addition to the functional nodes shown in Figure 1, the communication system may also include other nodes or devices (such as core network devices).

[0043] The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. Those skilled in the art will appreciate that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are equally applicable to similar technical problems.

[0044] The following describes the embodiments provided by the present disclosure in conjunction with the accompanying drawings.

[0045] As shown in FIG2 , the present disclosure provides a data receiving method, which is applied to a first node and includes the following steps:

[0046] S101. Receive first signaling sent by a second communication node, where the first signaling is used to indicate a first data transmission scheme.

[0047] The first data transmission scheme includes a coding scheme and / or a modulation scheme.

[0048] The coding scheme may include coding-related information such as the coding method and the coding rate. In one example, when the coding rate is fixed, the coding scheme includes the coding method. In another example, when the coding method is fixed, the coding scheme includes the coding rate. In yet another example, the coding scheme includes both the coding method and the coding rate.

[0049] Coding methods include convolutional codes, turbo codes, low-density parity check codes (LDPC), and polar codes. The coding rate can be expressed as the ratio of the number of bits before coding to the number of bits after coding, the number of bits before coding when the number of bits after coding is a fixed value, or the number of bits after coding when the number of bits before coding is a fixed value.

[0050] A modulation scheme can be used to convert digital information into an analog form suitable for transmission between two points in a wired or wireless system, for example, by mapping multiple bits into a complex-valued symbol. Modulation schemes may include binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), 8-phase shift keying (PSK), 16-quadrature amplitude modulation (QAM), 32QAM, 64QAM, 128QAM, 256QAM, 512QAM, 1024QAM, and 2048QAM.

[0051] In some embodiments, the first signaling indicates a first data transmission scheme, including: the first signaling separately indicates a coding scheme of a transmission channel and a modulation scheme of a physical channel used to transmit data, or the first signaling indicates a combination of a coding scheme and a modulation scheme.

[0052] In some embodiments, the first signaling may explicitly indicate the first data transmission scheme. Alternatively, the first signaling may implicitly indicate the first data transmission scheme. In one example, the first signaling may explicitly indicate a coding scheme or a modulation scheme. Alternatively, the first signaling may explicitly indicate a combination of a coding scheme and a modulation scheme. In yet another example, the first signaling may implicitly indicate a coding scheme or a modulation scheme. Alternatively, the first signaling may implicitly indicate a combination of a coding scheme and a modulation scheme.

[0053] A method of implicitly indicating a data transmission scheme may include: first signaling indicates the port of a reference signal associated with the transmitted data, and indicating the data transmission scheme through the port of a demodulation reference signal associated with the transmitted data. For example, the first signaling indicates the port number of the reference signal associated with the transmitted data, and the port number is used to indicate the data transmission scheme associated with the port number. For example, the port number of the reference signal is pre-associated with the data transmission scheme, or a mapping relationship is established, different port numbers correspond to different data transmission schemes, or each port number corresponds to a data transmission scheme. For another example, the ports of the reference signal are divided into different groups, and each port group corresponds to a data transmission scheme.

[0054] Another method of implicitly indicating a data transmission scheme may include: first signaling indicates the data transmission frequency band, and indicating the data transmission scheme by the position of the frequency band. For example, the data transmission scheme may be indicated by the starting position of the frequency band, that is, the data transmission scheme may be indicated by the position of the lowest frequency in the frequency band. Another example is indicating the data transmission scheme by the position of the highest frequency in the frequency band. By indicating the data transmission scheme by the position of the frequency band for data transmission, a suitable frequency domain position can be selected so that the channel state at the frequency domain position is suitable for the corresponding transmission scheme to transmit data, that is, the data transmission scheme matches the channel state at the frequency domain position of the data transmission frequency band.

[0055] In some embodiments, the first signaling may also be used to indicate at least one port of a reference signal associated with data, i.e., data sent by the second communication node to the first communication node, i.e., data received by the first communication node according to the first data transmission scheme indicated by the first signaling.

[0056] The reference signals provided in the present disclosure include various types of reference signals, such as a channel state information reference signal, a demodulation reference signal (DMRS), a phase tracking reference signal (PTRS), a sounding reference signal (SRS), etc.

[0057] In some embodiments, the first signaling further has at least the following implementation methods:

[0058] Implementation method 1: The first signaling is used to indicate a data transmission scheme and at least one port of a data-associated reference signal, where the data transmission scheme includes a data transmission scheme for data associated with each port.

[0059] Exemplarily, the data transmission scheme indicated by the first signaling may include at least one first data transmission scheme. Each first data transmission scheme corresponds to data associated with a port. That is, the first signaling is used to indicate the data transmission scheme, including: the first signaling indicates the data transmission scheme for data associated with each port.

[0060] In one example, the ports of the reference signal associated with the data indicated by the first signaling include port p1 and port p2, so that the data transmission scheme indicated by the first signaling may include: the first signaling indicates a data transmission scheme for the data associated with port p1 and a data transmission scheme for the data associated with port p2. That is, the first signaling indicates one data transmission scheme for the data associated with port p1 and another data transmission scheme for the data associated with port p2.

[0061] Furthermore, the first signaling indicates that the data transmission scheme of the data associated with port p1 can match the channel state experienced by the reference signal carried by port p1, that is, the data transmission scheme of the data associated with port p1 can match the channel state experienced by the data associated with port p1. Similarly, the first signaling indicates that the data transmission scheme of the data associated with port p2 can match the channel state experienced by the reference signal carried by port p2, that is, the data transmission scheme of the data associated with port p2 can match the channel state experienced by the data associated with port p2. Furthermore, the data transmission scheme of the data associated with port p1 matches the channel state of the wireless channel of the layer where the data associated with port p1 is located. The data transmission scheme of the data associated with port p2 matches the channel state of the wireless channel of the layer where the data associated with port p2 is located.

[0062] In another example, the ports of the data-associated reference signal indicated by the first signaling include port p1, port p2, and port p3. The port of the data-associated reference signal on the first layer is port p1, the port of the data-associated reference signal on the second layer is port p2, and the port of the data-associated reference signal on the third layer is port p3. Furthermore, based on port p1, port p2, and port p3, the first signaling can indicate a data transmission scheme on the first layer, a data transmission scheme on the second layer, and a data transmission scheme on the third layer, respectively.

[0063] In some examples, the ports of the reference signal associated with the data indicated by the first signaling may include four ports, and the data transmission scheme indicated by the first signaling may include the first signaling indicating a data transmission scheme for the data associated with each of the four ports.

[0064] It should be understood that the above is only an exemplary description of the port of the data-associated reference signal indicated by the first signaling, and the port of the data-associated reference signal may also have other implementation manners, which is not limited in the present disclosure.

[0065] It should be noted that the above-mentioned data and the reference signal associated with the data can be located in the same layer in the spatial division multiplexing and experience the same channel state. The port of the reference signal is used to carry the reference signal. The data transmission scheme includes a data transmission scheme for the data associated with each port, that is, the first signaling indicates the data transmission scheme based on the port of the data-associated reference signal. It can be understood that the first signaling indicates the data transmission scheme based on the layer in the spatial division multiplexing, so that the data transmission scheme matches the channel state of the wireless channel used to transmit the data, thereby improving the performance of data transmission.

[0066] Implementation method 2: The first signaling is used to indicate a data transmission scheme, and the first signaling is also used to indicate a first signal.

[0067] The first signal is used to provide a reference for a reference signal associated with received data, and the coding scheme in the data transmission scheme belongs to a first coding scheme set. In addition, the first coding scheme set is determined from at least one coding scheme set based on the first signal.

[0068] In some embodiments, the channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

[0069] For example, taking the demodulation reference signal as an example, the first signal can be understood as the channel state information reference signal referenced by the demodulation reference signal. For example, to facilitate the first communication node receiving the demodulation reference signal, the first signaling can indicate a channel state information reference signal having the same channel characteristics as the transmission or reception of the demodulation reference signal, so that the first communication node can refer to the relevant information of the received channel state information reference signal to receive the corresponding demodulation reference signal. The demodulation reference signal can have at least one of the same channel characteristics as the channel state information reference signal, such as delay spread, average Doppler frequency, Doppler frequency spread, and Doppler frequency.

[0070] In some embodiments, the first set of coding schemes is determined from at least one set of coding schemes based on a type of the first signal.

[0071] In some embodiments, the type of the first signal may include a periodic signal, an aperiodic signal, or a semi-persistent signal, so that the second communication node can determine the first coding scheme set from multiple candidate coding scheme sets based on the type of the first signal. Furthermore, a coding scheme can be selected from the first coding scheme set, that is, the first signaling indicates a coding scheme from the first coding scheme set. In this way, the coding scheme in the data transmission scheme can be more adapted to the channel state, thereby improving transmission efficiency.

[0072] For example, taking the demodulation reference signal as an example, the first signal is the channel state information reference signal referenced by the demodulation reference signal. The type of the channel state information reference signal referenced by the demodulation reference signal can be a periodic channel state information reference signal, an aperiodic channel state information reference signal, or a semi-persistent channel state information reference signal. Accordingly, different types of channel state information reference signals have different transmission characteristics and may also carry different characteristics of the channel state information. Thus, a first coding scheme set can be determined from a plurality of candidate coding scheme sets based on the type of the channel state signal referenced by the demodulation reference signal.

[0073] In this way, the coding scheme selected from the first coding scheme can better match the channel state of the wireless channel transmitting the data. For example, coding scheme set 1 is associated with periodic channel state information reference signals, coding scheme set 2 is associated with aperiodic channel state information reference signals, and coding scheme set 3 is associated with semi-persistent channel state information reference signals. The first coding scheme set is determined from a candidate coding scheme set based on the type of channel state information reference signal referenced by the demodulation reference signal.

[0074] Implementation 3: The first signaling is used to indicate a data transmission scheme, and the first signaling is also used to indicate a frequency band for data transmission, where the data transmission scheme includes a data transmission scheme for data transmitted by each frequency domain unit in the frequency band. That is, the first signaling is used to indicate a data transmission scheme, including: the first signaling separately indicates a data transmission scheme for data transmitted by each frequency domain unit in the frequency band.

[0075] The first signaling can be used to indicate the frequency band used to transmit data. Since the frequency band used to transmit data is composed of multiple frequency domain units, the first signaling can indicate the data transmission scheme according to the frequency domain units on the frequency band, that is, the first signaling indicates the data transmission scheme corresponding to each frequency domain unit on the frequency band.

[0076] Exemplarily, the data transmission scheme indicated by the first signaling may include at least one second data transmission scheme, and each second data transmission scheme corresponds to data transmitted by one frequency domain unit.

[0077] In one example, the frequency band of the transmitted data includes frequency domain unit 1 and frequency domain unit 2. Therefore, the first signaling indicating the data transmission scheme may include: the first signaling indicating the data transmission scheme corresponding to the data transmitted by frequency domain unit 1 and the data transmission scheme corresponding to the data transmitted by frequency domain unit 2.

[0078] In another example, the frequency band for transmitting data includes frequency domain unit 1, frequency domain unit 2, frequency domain unit 3, and frequency domain unit 4. Thus, the first signaling indicating the data transmission scheme may include: the first signaling indicating the data transmission scheme corresponding to the data transmitted by frequency domain unit 1, the data transmission scheme corresponding to the data transmitted by frequency domain unit 2, the data transmission scheme corresponding to the data transmitted by frequency domain unit 3, and the data transmission scheme corresponding to the data transmitted by frequency domain unit 4.

[0079] It should be understood that the above is only an exemplary description of the frequency band for transmitting data indicated by the first signaling. The frequency band for transmitting data may also have other possible implementations, which are not limited in the present disclosure.

[0080] It should be noted that the first signaling indicates the frequency band used for data transmission and indicates the data transmission scheme according to the frequency domain units on the frequency band. That is, the first signaling indicates the data transmission scheme corresponding to each frequency domain unit according to the frequency domain units on the frequency band, so that the data transmission scheme corresponding to the data of each frequency domain unit can be adapted to the channel state of the wireless channel of each frequency domain unit, thereby improving data transmission performance.

[0081] Implementation method 4: The first signaling is used to indicate the data transmission scheme, and the first signaling is also used to indicate the antenna panel used to transmit data; that is, the first signaling is used to indicate the data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each antenna panel respectively.

[0082] Exemplarily, the data transmission scheme indicated by the first signaling may include at least one third data transmission scheme. Each third data transmission scheme corresponds to data transmitted by one antenna panel. Alternatively, the data transmitted by each antenna panel corresponds to multiple third data transmission schemes.

[0083] In one example, the antenna panels transmitting data include antenna panel 1 and antenna panel 2. Thus, the first signaling indicating the data transmission scheme may include: the first signaling indicating the data transmission scheme corresponding to the data transmitted by antenna panel 1 and the data transmission scheme corresponding to the data transmitted by antenna panel 2.

[0084] In another example, the antenna panels transmitting data include antenna panel 1, antenna panel 2, antenna panel 3, and antenna panel 4. Thus, the first signaling indicating the data transmission scheme may include: the first signaling indicating the data transmission scheme corresponding to the data transmitted by antenna panel 1, the data transmission scheme corresponding to the data transmitted by antenna panel 2, the data transmission scheme corresponding to the data transmitted by antenna panel 3, and the data transmission scheme corresponding to the data transmitted by antenna panel 4.

[0085] It should be noted that the first signaling indicates the antenna panel used for data transmission, and the first signaling transmits the data transmission scheme according to the antenna panel instructions. That is, the first signaling indicates the data transmission scheme corresponding to each antenna panel, so that the data transmission scheme corresponding to each antenna panel is adapted to the channel state of the wireless channel of each antenna panel, thereby improving data transmission performance.

[0086] Implementation method 5: The first signaling is used to indicate a data transmission scheme, and the first signaling is also used to indicate at least one second signal, the second signal corresponds to at least one port group of a reference signal associated with the data, and the second signal is used to provide a reference based on common channel characteristics for the corresponding port group; that is, the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port group corresponding to each second signal.

[0087] The common channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

[0088] The second signal can be understood as a signal that provides a reference for the reference signal, for example, providing a reference based on common channel characteristics. For example, if the reference signal is a demodulation reference signal, the second signal can provide a reference for the demodulation reference signal, such as the channel state information reference signal that provides a reference for the received demodulation reference signal.

[0089] Exemplarily, the data transmission scheme indicated by the first signaling may include at least one fourth data transmission scheme, and each fourth data transmission scheme corresponds to data associated with a port group.

[0090] In one example, the first signaling indicates that the second signal providing a reference for the reference signal is second signal 1 and second signal 2. Furthermore, the port group for the reference signal using second signal 1 as a reference is port group 1. The first signaling may further indicate a data transmission scheme for data associated with port group 1. The port group for the reference signal using second signal 2 as a reference is port group 2. The first signaling may further indicate a data transmission scheme for data associated with port group 2.

[0091] In another example, the first signaling indicates that the second signals providing references for the reference signals are second signal 1, second signal 2, second signal 3, and second signal 2. Furthermore, the port group of reference signals with second signal 1 as a reference is port group 1, and the first signaling may further indicate a data transmission scheme for data associated with port group 1. The port group of reference signals with second signal 2 as a reference is port group 2, and the first signaling may further indicate a data transmission scheme for data associated with port group 2. The port group of reference signals with second signal 3 as a reference is port group 3, and the first signaling may further indicate a data transmission scheme for data associated with port group 3. The port group of reference signals with second signal 4 as a reference is port group 4, and the first signaling may further indicate a data transmission scheme for data associated with port group 4.

[0092] It should be noted that the first signaling indicates the port group of the reference signal based on the second signal used to provide the reference, and the data transmission scheme associated with the port group of the reference signal is indicated according to the second signal. The channel state of each port group is the same as the channel state of the second signal referenced by its corresponding port group, and the channel states of different port groups are different. Therefore, the data transmission scheme associated with each port group can match the channel state of its corresponding port group, thereby improving data transmission performance.

[0093] Implementation 6: The first signaling is used to indicate a data transmission scheme, and the first signaling is further used to indicate at least one transport block used for transmitting data and at least one port of a reference signal associated with data transmitted by each transport block, wherein the data transmission scheme includes the data transmission scheme for data transmitted by each transport block. That is, the first signaling is used to indicate the data transmission scheme, including: the first signaling separately indicates the data transmission scheme for data transmitted by each transport block.

[0094] In one implementation, ports of demodulation reference signals associated with the same transport block are located in the same code division multiplexing group, and ports of demodulation reference signals associated with different transport blocks are located in different code division multiplexing groups.

[0095] Exemplarily, the at least one transport block includes a first transport block and a second transport block, wherein ports of reference signals associated with data transmitted by the first transport block are all carried in a first code division multiplexing group, and ports of reference signals associated with data transmitted by the second transport block are all carried in a second code division multiplexing group.

[0096] In one example, the first signaling indicates that the number of transport blocks used for data transmission is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the ports for the reference signal associated with transport block 1 are port 1 and port 2, and the ports for the reference signal associated with transport block 2 are port 3 and port 4. Port 1 and port 2 are located in code division multiplexing group 1, and port 3 and port 4 are located in code division multiplexing group 2. Code division multiplexing group 1 and code division multiplexing group 2 are different.

[0097] It should be understood that two or more ports are located in the same code division multiplexing group, that is, two or more ports are located on the same set of time-frequency resources, and the ports are distinguished by different code sequences, that is, the two or more ports are located on the same set of time-frequency resources in a code division multiplexing manner. Two ports are located in different code division multiplexing groups, that is, the two ports are located on different time-frequency resource groups.

[0098] In another example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1, port 2, port 3, and port 4, and the reference signal ports associated with transport block 2 are port 5, port 6, port 7, and port 8. Port 1, port 2, port 3, and port 4 are located in code division multiplexing group 1, and port 5, port 6, port 7, and port 8 are located in code division multiplexing group 2, which is different from code division multiplexing group 2.

[0099] It should be noted that, since the channel states on the time-frequency resources on the same code division multiplexing group are the same, the channel state changes of the ports located on the same code division multiplexing group are the same. However, the channel states on the time-frequency resources on different code division multiplexing groups are different, so the channel state changes of the ports located on different code division multiplexing groups are different. The first signaling indicates the data transmission scheme for each transmission block respectively, and indicates the ports of the reference signal located in the same code division multiplexing group for the same transmission block, and indicates the ports of the reference signal located in different code division multiplexing groups for different transmission blocks. In this way, the data transmission scheme of each transmission block can be adapted to the channel state experienced by the demodulation reference signal of the corresponding reference signal port, that is, the data transmission scheme of each transmission block is adapted to the channel state experienced by each transmission block, thereby improving the performance of data transmission.

[0100] In another implementation, ports of demodulation reference signals associated with the same transport block are located in the same time domain unit, and ports of demodulation reference signals associated with different transport blocks are located in different time domain units.

[0101] Exemplarily, the at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signals associated with the data transmitted by the first transmission block are all carried on the first time domain unit; the ports of the reference signals associated with the data transmitted by the second transmission block are all carried on the second time domain unit.

[0102] In one example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1 and port 2, and the reference signal ports associated with transport block 2 are port 3 and port 4. Port 1 and port 2 are located in time domain unit 1, and port 3 and port 4 are located in time domain unit 2, and time domain unit 1 and time domain unit 2 are different.

[0103] In another example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1, port 2, port 3, and port 4, and the reference signal ports associated with transport block 2 are port 5, port 6, port 7, and port 8. Ports 1, port 2, port 3, and port 4 are located in time domain unit 1, and ports 5, port 6, port 7, and port 8 are located in time domain unit 2, where time domain unit 1 is different from time domain unit 2.

[0104] It should be noted that, since the channel states on the time-frequency resources on the same time domain unit are the same, the channel state changes of the ports located on the same time domain unit are the same. However, the channel states on the time-frequency resources on different time domain units are different, so the channel state changes of the ports located on different time domain units are different. The first signaling indicates the data transmission scheme for the data transmitted by each transmission block, and indicates the demodulation reference signal port located in the same time domain unit for the same transmission block, and indicates the demodulation reference signal port located in different time domain units for different transmission blocks. In this way, the data transmission scheme corresponding to each transmission block can be adapted to the channel state experienced by the reference signal of the corresponding reference signal port, that is, the transmission scheme of each transmission block is adapted to the channel state experienced by each transmission block, thereby improving the performance of data transmission.

[0105] In yet another implementation, ports of demodulation reference signals associated with the same transport block are located in the same frequency domain unit, and ports of demodulation reference signals associated with different transport blocks are located in different frequency domain units.

[0106] Exemplarily, the at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signals associated with the data transmitted by the first transmission block are all carried on the first frequency domain unit; the ports of the reference signals associated with the data transmitted by the second transmission block are all carried on the second frequency domain unit.

[0107] In one example, the first signaling indicates that the number of transport blocks used for data transmission is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1 and port 2, and the reference signal ports associated with transport block 2 are port 3 and port 4. Port 1 and port 2 are located in frequency domain unit 1, and port 3 and port 4 are located in frequency domain unit 2, and frequency domain unit 1 and frequency domain unit 2 are different.

[0108] In another example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1, port 2, port 3, and port 4, and the reference signal ports associated with transport block 2 are port 5, port 6, port 7, and port 8. Ports 1, port 2, port 3, and port 4 are located in frequency domain unit 1, and ports 5, port 6, port 7, and port 8 are located in frequency domain unit 2, where frequency domain unit 1 is different from frequency domain unit 2.

[0109] It should be noted that, since the channel states on the time-frequency resources on the same frequency domain unit are the same, the channel state changes of the ports located on the same frequency domain unit are the same. However, the channel states on the time-frequency resources on different frequency domain units are different, so the channel state changes of the ports located on different frequency domain units are different. The first signaling indicates the data transmission scheme for the data transmitted by each transmission block, and indicates the port of the reference signal located in the same frequency domain unit for the same transmission block, and indicates the port of the reference signal located in different frequency domain units for different transmission blocks. In this way, the data transmission scheme of each transmission block can be adapted to the channel state experienced by the demodulation reference signal of the corresponding demodulation reference signal port, that is, the data transmission scheme of each transmission block is adapted to the channel state experienced by each transmission block, thereby improving the performance of data transmission.

[0110] Implementation method 7: The first signaling is also used to indicate at least one transmission block for transmitting data, and indicates at least one port of a reference signal associated with the transmitted data for each transmission block, and the frequency domain density of the corresponding port; the first signaling indicates a data transmission scheme, including that the first signaling indicates a data transmission scheme for the transmitted data for each transmission block.

[0111] In one example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the ports of the reference signal associated with transport block 1 are port 1 and port 2, and the ports of the reference signal associated with transport block 2 are port 3 and port 4. The frequency domain density between port 1 and port 2 is r1, and the frequency domain density between port 3 and port 4 is r2.

[0112] In another example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1, port 2, port 3, and port 4, and the reference signal ports associated with transport block 2 are port 5, port 6, port 7, and port 8. The frequency domain density of ports 1, port 2, port 3, and port 4 is r1, and the frequency domain density of ports 5, port 6, port 7, and port 8 is r2.

[0113] It should be noted that, because the channel state changes for ports with the same frequency domain density are the same, while the channel states for ports with different frequency domain densities are different, the first signaling indicates the data transmission scheme for each transport block, indicates ports with demodulation reference signals of the same frequency domain density for the same transport block, and indicates ports with demodulation reference signals of different frequency domain densities for different transport blocks. In this way, the data transmission scheme for each transport block can be adapted to the channel state experienced by the demodulation reference signal of the corresponding demodulation reference signal port, that is, the data transmission scheme for each transport block is adapted to the channel state experienced by each transport block.

[0114] Implementation method 8: The first signaling is used to indicate a data transmission scheme, and the first signaling is also used to indicate at least one transmission block for transmitting data, indicating at least one port of a reference signal associated with the transmitted data and the transmission power of the corresponding port for each transmission block; the first signaling indicating the data transmission scheme includes that the first signaling indicates the data transmission scheme of the transmitted data for each transmission block.

[0115] In one example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the ports for the reference signal associated with transport block 1 are port 1 and port 2, and the ports for the reference signal associated with transport block 2 are port 3 and port 4. The transmission power of port 1 and port 2 is p1, and the transmission power of port 3 and port 4 is p2.

[0116] In another example, the number of transport blocks used for data transmission indicated by the first signaling is two, including transport block 1 and transport block 2. The data transmission scheme for the data transmitted by transport block 1 is data transmission scheme 1, and the data transmission scheme for the data transmitted by transport block 2 is data transmission scheme 2. In addition, the reference signal ports associated with transport block 1 are port 1, port 2, port 3, and port 4, and the reference signal ports associated with transport block 2 are port 5, port 6, port 7, and port 8. The transmission power of ports 1, port 2, port 3, and port 4 is p1, and the transmission power of ports 5, port 6, port 7, and port 8 is p2.

[0117] It should be noted that, because the channel state changes for ports with the same transmission power are the same, while the channel states for ports with different transmission powers are different, the first signaling indicates the data transmission scheme for the data transmitted by each transport block, indicates ports with reference signals having the same transmission power for the same transport block, and indicates ports with reference signals having different transmission powers for different transport blocks. This allows the data transmission scheme for each transport block to be adapted to the channel state experienced by the reference signal of the corresponding reference signal port, that is, the data transmission scheme for each transport block is adapted to the channel state experienced by each transport block.

[0118] In some embodiments, the frequency domain density of the at least one port is determined based on a data transmission scheme.

[0119] Exemplarily, the first signaling is used to indicate a data transmission scheme and at least one port of a data-associated reference signal. Furthermore, the frequency domain density of at least one port can be determined based on the data transmission scheme. It should be noted that different frequency domain densities of a port can be used to represent different degrees of accuracy in channel estimation. A greater frequency domain density of a port indicates a higher degree of achievable channel estimation accuracy, and correspondingly, a smaller frequency domain density of a port indicates a lower degree of achievable channel estimation accuracy. In other words, the frequency domain densities of data transmission schemes for ports associated with different data differ. Thus, since the first signaling indicates the data transmission scheme, the frequency domain density of the port can be further determined based on the data transmission scheme.

[0120] For example, the frequency domain density of the port associated with candidate data transmission scheme 1 is frequency domain density 1, the frequency domain density of the port associated with candidate data transmission scheme 2 is frequency domain density 2, ..., and the frequency domain density of the port associated with candidate data transmission scheme K is frequency domain density K. Frequency domain density i and frequency domain density j may be the same or different.

[0121] It should be noted that the frequency domain density of the ports of the associated demodulation reference signal is determined according to the data transmission scheme, so that the accuracy of the channel estimation can be adapted to the data transmission scheme, thereby improving the performance of data transmission.

[0122] In some embodiments, the data transmission scheme is determined based on a frequency domain density of at least one port.

[0123] The first signaling indicates the data transmission scheme in an implicit manner.

[0124] Exemplarily, the first signaling indicates the port of the reference signal associated with the transmitted data, and indicates the frequency domain density of the port. That is, the data transmission scheme is indicated in an implicit manner. For example, the data transmission scheme is determined based on the frequency domain density of the port of the reference signal associated with the transmitted data. It should be noted that different frequency domain densities of the port can be used to represent different degrees of accuracy for channel estimation. The greater the frequency domain density of the port, the higher the accuracy of the achievable channel estimation. Correspondingly, the smaller the frequency domain density of the port, the lower the accuracy of the achievable channel estimation. That is, the frequency domain density of the data transmission schemes for different data-associated ports is different. Therefore, the first signaling indicates the frequency domain density of the port, and the data transmission scheme associated with the port can be determined based on the frequency domain density of the port.

[0125] For example, the data transmission scheme 1 is associated with the frequency domain density 1 of the port, the data transmission scheme 2 is associated with the frequency domain density 2 of the port, ..., and the data transmission scheme K is associated with the frequency domain density K of the port. The transmission scheme i and the transmission scheme j may be the same or different.

[0126] It should be noted that the data transmission scheme is determined according to the frequency domain density of the ports of the associated demodulation reference signal, so that the accuracy of the channel estimation can be adapted to the data transmission scheme, thereby improving the performance of data transmission.

[0127] In some embodiments, the data transmission scheme of data transmitted by each transport block includes an index number of a combination of a coding scheme and a modulation scheme of the transport block. The at least one transport block includes a first transport block and a second transport block, and the index number of the combination of the coding scheme and the modulation scheme of the first transport block and the index number of the combination of the coding scheme and the modulation scheme of the second transport block are both less than a first threshold.

[0128] Exemplarily, the first signaling may indicate the index number of the combination of the coding scheme and the modulation scheme of the first transmission block and the index number of the combination of the coding scheme and the modulation scheme of the second transmission block, and the index number of the combination of the second transmission block and the index number of the combination of the first transmission block are less than the first threshold value.

[0129] It should be understood that the index value of the combination of the coding scheme and the modulation scheme represents the data transmission rate. It should be noted that, because the channel state experienced by the first transport block and the channel state experienced by the second transport block have a certain correlation, the data transmission scheme of the first transport block and the data transmission scheme of the second transport block have a certain correlation. If the index number of the combination of the second transport block and the index number of the combination of the first transport block are less than the first threshold value, the data transmission schemes of the two transport blocks can be matched with the channel states experienced by the two transport blocks, thereby improving data transmission performance.

[0130] In some embodiments, the data transmission scheme is determined by the second communication node based on the channel state. Furthermore, the second communication node can notify the first communication node of the data transmission scheme through control information signaling (i.e., first signaling) to perform data transmission. For example, the second communication node transmits a channel state information reference signal to the base station, the first communication node terminal measures the channel state information reference signal to obtain channel state information, the terminal reports the channel state information to the base station, the base station formulates a data transmission scheme based on the received channel state information, the base station transmits data according to the formulated data transmission scheme, and notifies the formulated data transmission scheme with control information signaling (i.e., first signaling), and the terminal receives the data transmitted by the base station according to the received data transmission scheme. For another example, the terminal transmits an uplink reference signal, the base station measures the uplink reference signal to obtain channel state information, formulates a data transmission scheme based on the obtained channel state information, the base station notifies the formulated data transmission scheme with control information signaling, the terminal transmits data to the base station according to the received data transmission scheme, and the base station receives the data of the terminal according to the data transmission scheme.

[0131] S102. Receive data sent by the second communication node according to the data transmission scheme indicated by the first signaling.

[0132] Exemplarily, the first communication node may receive the data based on a reference signal associated with the data sent by the second communication node. Taking the reference signal as a demodulation reference signal as an example, in one example, the first communication node may obtain the wireless channel coefficient of the data transmission through the demodulation reference signal, and receive the data sent by the second communication node based on the obtained wireless channel coefficient. The data sent by the second communication node may be demodulated according to the wireless channel coefficient. In another example, the data may be demodulated with reference to the demodulation reference signal, and the port of the demodulation reference signal is a mapping of the antenna port that transmits the demodulation reference signal on the wireless transmission resource, such as a mapping on the time-frequency domain resources, or for example, a mapping on the time-frequency code domain resources. Since the port of the demodulation reference signal is used to carry the demodulation reference signal, the port of the demodulation reference signal associated with the transmitted data is used to carry the demodulation reference signal associated with the transmitted data.

[0133] Based on the technical solution provided in the present disclosure, the first communication node can perform data transmission based on the data transmission scheme provided by the second communication node. The data transmission scheme can be configured based on the channel state so that the data transmission scheme matches the channel state of the transmitted data, so that the second communication node performs data transmission based on the data transmission scheme, which can improve the performance of data transmission, including the efficiency of data transmission, the accuracy of data transmission, etc.

[0134] In some embodiments, as shown in FIG3 , the present disclosure further provides a data transmission method, which is applied to a second communication node and includes the following steps:

[0135] S201. Send a first signaling to a first communication node, where the first signaling is used to indicate a data transmission scheme.

[0136] The data transmission scheme includes a coding scheme and / or a modulation scheme.

[0137] In some embodiments, the first signaling is further used to indicate at least one port of a reference signal associated with the data.

[0138] In some embodiments, the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates a data transmission scheme for data associated with each port.

[0139] In some embodiments, the first signaling is also used to indicate a first signal, the first signal is used to provide a reference for a reference signal associated with received data, and the coding scheme belongs to a first coding scheme set; the first coding scheme set is determined from at least one coding scheme set based on the first signal.

[0140] In some embodiments, the channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

[0141] In some embodiments, the first signaling is further used to indicate a frequency band for transmitting data; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates a data transmission scheme for data transmitted by each frequency domain unit of the frequency band.

[0142] In some embodiments, the first signaling is also used to indicate the antenna panel used to transmit data; the first signaling is used to indicate the data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each antenna panel respectively.

[0143] In some embodiments, the first signaling is also used to indicate at least one second signal, the second signal corresponds to at least one port group of a reference signal associated with the data, and the second signal is used to provide a reference based on common channel characteristics for the corresponding port group; the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port group corresponding to each second signal.

[0144] In some embodiments, the first signaling is also used to indicate at least one transmission block for transmitting data and at least one port of a reference signal associated with the data transmitted by each transmission block; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each transmission block respectively.

[0145] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signals associated with the data transmitted by the first transmission block are all carried on the first code division multiplexing group; the ports of the reference signals associated with the data transmitted by the second transmission block are all carried on the second code division multiplexing group.

[0146] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first time domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second time domain unit.

[0147] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first frequency domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second frequency domain unit.

[0148] In some embodiments, the first signaling is further used to indicate, for each transport block, a frequency domain density of ports of reference signals associated with the transmitted data.

[0149] In some embodiments, the first signaling is further used to indicate, for each transport block, the transmission power of a port of a reference signal associated with the transmitted data.

[0150] In some embodiments, the data transmission scheme of the data transmitted by each transport block includes an index number of a combination of a coding scheme and a modulation scheme of the transport block; at least one transport block includes a first transport block and a second transport block, and the index number of the combination of the coding scheme and the modulation scheme of the first transport block and the index number of the combination of the coding scheme and the modulation scheme of the second transport block are both less than a first threshold value.

[0151] In some embodiments, the frequency domain density of the at least one port is determined based on a data transmission scheme.

[0152] In some embodiments, the data transmission scheme is determined based on a frequency domain density of at least one port.

[0153] S202. Send data to the first communication node according to the data transmission scheme indicated by the first signaling.

[0154] In addition, for the detailed description of S201 to S202 , reference can be made to the related description of S101 to S102 mentioned above, which will not be repeated here.

[0155] The above mainly introduces the solution provided by the present disclosure from the perspective of the interaction between various communication nodes. It is understandable that each node, such as a device or equipment, includes a hardware structure and / or software module corresponding to the execution of each function in order to realize the above functions. It should be easy for those skilled in the art to realize that, in combination with the algorithm steps of each example described in the embodiments disclosed herein, the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware 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 to be beyond the scope of the present invention.

[0156] The embodiments of the present disclosure can divide the functional modules of the communication device according to the above-mentioned method embodiments. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one functional module. The above-mentioned integrated modules can be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical functional division. In actual implementation, there may be other division methods. The following is an example of dividing each functional module corresponding to each function.

[0157] FIG4 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure. As shown in FIG4 , the communication device 40 includes a first receiving module 401 and a second receiving module 402 .

[0158] The first receiving module 401 is configured to receive a first signaling sent by a second communication node. The first signaling is used to indicate a data transmission scheme, which includes a coding scheme and / or a modulation scheme.

[0159] The second receiving module 402 is configured to receive data sent by the second communication node according to the data transmission scheme indicated by the first signaling.

[0160] In some embodiments, the first signaling is further used to indicate at least one port of a reference signal associated with the data.

[0161] In some embodiments, the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates a data transmission scheme for data associated with each port.

[0162] In some embodiments, the first signaling is also used to indicate a first signal, the first signal is used to provide a reference for a reference signal associated with received data, and the coding scheme belongs to a first coding scheme set; the first coding scheme set is determined from at least one coding scheme set based on the first signal.

[0163] In some embodiments, the channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

[0164] In some embodiments, the first signaling is further used to indicate a frequency band for transmitting data; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates a data transmission scheme for data transmitted by each frequency domain unit of the frequency band.

[0165] In some embodiments, the first signaling is also used to indicate the antenna panel used to transmit data; the first signaling is used to indicate the data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each antenna panel respectively.

[0166] In some embodiments, the first signaling is also used to indicate at least one second signal, the second signal corresponds to at least one port group of a reference signal associated with the data, and the second signal is used to provide a reference based on common channel characteristics for the corresponding port group; the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port group corresponding to each second signal.

[0167] In some embodiments, the first signaling is also used to indicate at least one transmission block for transmitting data and at least one port of a reference signal associated with the data transmitted by each transmission block; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each transmission block respectively.

[0168] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signals associated with the data transmitted by the first transmission block are all carried on the first code division multiplexing group; the ports of the reference signals associated with the data transmitted by the second transmission block are all carried on the second code division multiplexing group.

[0169] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first time domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second time domain unit.

[0170] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first frequency domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second frequency domain unit.

[0171] In some embodiments, the first signaling is further used to indicate, for each transport block, a frequency domain density of ports of reference signals associated with the transmitted data.

[0172] In some embodiments, the first signaling is further used to indicate, for each transport block, the transmission power of a port of a reference signal associated with the transmitted data.

[0173] In some embodiments, the data transmission scheme of the data transmitted by each transport block includes an index number of a combination of a coding scheme and a modulation scheme of the transport block; at least one transport block includes a first transport block and a second transport block, and the index number of the combination of the coding scheme and the modulation scheme of the first transport block and the index number of the combination of the coding scheme and the modulation scheme of the second transport block are both less than a first threshold value.

[0174] In some embodiments, the frequency domain density of the at least one port is determined based on a data transmission scheme.

[0175] In some embodiments, the data transmission scheme is determined based on a frequency domain density of at least one port.

[0176] For a more detailed description of the first receiving module 401 and the second receiving module 402, a more detailed description of each technical feature, and a description of the beneficial effects, etc., please refer to the corresponding method embodiment section above, which will not be repeated here.

[0177] FIG5 is a schematic diagram showing the composition of a communication device provided by an embodiment of the present disclosure. As shown in FIG5 , the communication device 50 includes a first sending module 501 and a second sending module 502 .

[0178] The first sending module 501 is configured to send a first signaling to a first communication node; the first signaling is used to indicate a data transmission scheme, which includes a coding scheme and / or a modulation scheme.

[0179] The second sending module 502 is configured to receive data sent by the second communication node according to the data transmission scheme indicated by the first signaling.

[0180] In some embodiments, the first signaling is further used to indicate at least one port of a reference signal associated with the data.

[0181] In some embodiments, the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates a data transmission scheme for data associated with each port.

[0182] In some embodiments, the first signaling is also used to indicate a first signal, the first signal is used to provide a reference for a reference signal associated with received data, and the coding scheme belongs to a first coding scheme set; the first coding scheme set is determined from at least one coding scheme set based on the first signal.

[0183] In some embodiments, the channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

[0184] In some embodiments, the first signaling is further used to indicate a frequency band for transmitting data; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates a data transmission scheme for data transmitted by each frequency domain unit of the frequency band.

[0185] In some embodiments, the first signaling is also used to indicate the antenna panel used to transmit data; the first signaling is used to indicate the data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each antenna panel respectively.

[0186] In some embodiments, the first signaling is also used to indicate at least one second signal, the second signal corresponds to at least one port group of a reference signal associated with the data, and the second signal is used to provide a reference based on common channel characteristics for the corresponding port group; the first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port group corresponding to each second signal.

[0187] In some embodiments, the first signaling is also used to indicate at least one transmission block for transmitting data and at least one port of a reference signal associated with the data transmitted by each transmission block; the first signaling is used to indicate a data transmission scheme, including: the first signaling indicates the data transmission scheme of the data transmitted by each transmission block respectively.

[0188] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signals associated with the data transmitted by the first transmission block are all carried on the first code division multiplexing group; the ports of the reference signals associated with the data transmitted by the second transmission block are all carried on the second code division multiplexing group.

[0189] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first time domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second time domain unit.

[0190] In some embodiments, at least one transmission block includes a first transmission block and a second transmission block, and the ports of the reference signal associated with the data transmitted by the first transmission block are all carried on the first frequency domain unit; the ports of the reference signal associated with the data transmitted by the second transmission block are all carried on the second frequency domain unit.

[0191] In some embodiments, the first signaling is further used to indicate, for each transport block, a frequency domain density of ports of reference signals associated with the transmitted data.

[0192] In some embodiments, the first signaling is further used to indicate, for each transport block, the transmission power of a port of a reference signal associated with the transmitted data.

[0193] In some embodiments, the data transmission scheme of the data transmitted by each transport block includes an index number of a combination of a coding scheme and a modulation scheme of the transport block; at least one transport block includes a first transport block and a second transport block, and the index number of the combination of the coding scheme and the modulation scheme of the first transport block and the index number of the combination of the coding scheme and the modulation scheme of the second transport block are both less than a first threshold value.

[0194] In some embodiments, the frequency domain density of the at least one port is determined based on a data transmission scheme.

[0195] In some embodiments, the data transmission scheme is determined based on a frequency domain density of at least one port.

[0196] For a more detailed description of the first sending module 501 and the second sending module 502, a more detailed description of each technical feature, and a description of the beneficial effects, etc., please refer to the corresponding method embodiment section above and will not be repeated here.

[0197] It should be noted that the modules in FIG4 or FIG5 may also be referred to as units. For example, the processing module may be referred to as a processing unit. In addition, in the embodiments shown in FIG4 or FIG5 , the names of the modules may not be those shown in the figures. For example, the sending module or the receiving module may also be referred to as a communication module.

[0198] If the various units in Figure 4 or Figure 5 are implemented in the form of software function modules 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 embodiment of the present disclosure is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0199] In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the embodiment of the present disclosure provides a schematic diagram of the structure of a communication device. As shown in Figure 6, the communication device 60 includes: a processor 602, a communication interface 603, and a bus 604. In some embodiments, the communication device 60 may also include a memory 601.

[0200] Processor 602 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 602 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array, or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Processor 602 may implement or execute the various exemplary logic blocks, modules, and circuits described in conjunction with the present disclosure. Processor 602 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, or a combination of a DSP and a microprocessor.

[0201] The communication interface 603 is used to connect to other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0202] The memory 601 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of dynamic storage device that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0203] As an implementation, the memory 601 may exist independently of the processor 602. The memory 601 may be connected to the processor 602 via a bus 604 and used to store instructions or program codes. When the processor 602 calls and executes the instructions or program codes stored in the memory 601, the method provided by the embodiment of the present disclosure can be implemented.

[0204] In another implementation, the memory 601 may also be integrated with the processor 602 .

[0205] Bus 604 can be an Extended Industry Standard Architecture (EISA) bus, etc. Bus 604 can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, FIG6 shows only one thick line, but this does not mean that there is only one bus or only one type of bus.

[0206] Through the description of the above implementation methods, technical personnel in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional modules as needed, that is, the internal structure of the equipment or device is divided into different functional modules to complete all or part of the functions described above.

[0207] The present disclosure also provides a computer-readable storage medium. All or part of the processes in the above-mentioned method embodiments can be completed by computer instructions to instruct the relevant hardware, and the program can be stored in the above-mentioned computer-readable storage medium. When the program is executed, it may include the processes of the above-mentioned method embodiments. The computer-readable storage medium can be the memory of any of the above-mentioned embodiments. The above-mentioned computer-readable storage medium can also be an external storage device of the above-mentioned device or apparatus, such as a plug-in hard disk, a smart memory card (smart media card, SMC), a secure digital (secure digital, SD) card, a flash card (flash card), etc. equipped on the above-mentioned device or apparatus. Further, the above-mentioned computer-readable storage medium can also include both the internal storage unit of the above-mentioned device or apparatus and an external storage device. The above-mentioned computer-readable storage medium is used to store the above-mentioned computer program and other programs and data required by the above-mentioned device or apparatus. The above-mentioned computer-readable storage medium can also be used to temporarily store data that has been output or is to be output. The readable storage medium includes a non-transitory computer-readable storage medium.

[0208] The embodiments of the present disclosure further provide a computer program product, which includes a computer program. When the computer program product is run on a computer, the computer is enabled to execute any one of the methods provided in the above embodiments.

[0209] Although the present disclosure is described herein in conjunction with various embodiments, in the process of implementing the disclosure for which protection is sought, those skilled in the art may understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple components. A single processor or other unit may implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0210] Although the present disclosure has been described with reference to detailed features and embodiments thereof, it will be apparent that various modifications and combinations may be made thereto without departing from the spirit and scope of the present disclosure. Accordingly, this specification and the drawings are merely illustrative of the present disclosure as defined by the appended claims and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of the present disclosure. Obviously, those skilled in the art may make various modifications and variations to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, the present disclosure is intended to encompass such modifications and variations as would fall within the scope of the claims of the present disclosure and their equivalents.

[0211] The above is only a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or replacements within the technical scope disclosed in the present disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A data receiving method, wherein: The method is applied to a first communication node and comprises: Receiving a first signaling sent by a second communication node; the first signaling is used to indicate a data transmission scheme; the data transmission scheme includes a coding scheme and / or a modulation scheme; Receive data sent by the second communication node according to the data transmission scheme indicated by the first signaling.

2. The method according to claim 1, wherein: The first signaling is further used to indicate at least one port of a reference signal associated with the data.

3. The method according to claim 2, wherein: The first signaling is used to indicate a data transmission scheme, including: the first signaling respectively indicates a data transmission scheme for data associated with each port.

4. The method according to claim 1, wherein: The first signaling is also used to indicate a first signal, the first signal is used to provide a reference for receiving a reference signal associated with the data, and the coding scheme belongs to a first coding scheme set; wherein the first coding scheme set is determined from at least one coding scheme set based on the first signal.

5. The method according to claim 4, wherein: The channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

6. The method according to claim 1, wherein: The first signaling is further used to indicate a frequency band used to transmit the data; The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each frequency domain unit of the frequency band.

7. The method according to claim 1, wherein: The first signaling is also used to indicate the antenna panel used to transmit the data; the first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each of the antenna panels.

8. The method according to claim 1, wherein: The first signaling is further used to indicate at least one second signal, the second signal corresponds to at least one port group of the reference signal associated with the data, and the second signal is used to provide a reference based on a common channel characteristic for the corresponding port group; The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port groups corresponding to each of the second signals.

9. The method according to claim 1, wherein: The first signaling is further used to indicate at least one transport block used to transmit the data and at least one port of a reference signal associated with the data transmitted by each transport block; The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each of the transmission blocks.

10. The method according to claim 9, wherein: The at least one transmission block includes a first transmission block and a second transmission block, wherein ports of reference signals associated with data transmitted by the first transmission block are all carried on a first code division multiplexing group; ports of reference signals associated with data transmitted by the second transmission block are all carried on a second code division multiplexing group.

11. The method according to claim 9, wherein: The at least one transmission block includes a first transmission block and a second transmission block, wherein ports of reference signals associated with data transmitted by the first transmission block are all carried on a first time domain unit; ports of reference signals associated with data transmitted by the second transmission block are all carried on a second time domain unit.

12. The method according to claim 9, wherein: The at least one transmission block includes a first transmission block and a second transmission block, wherein ports of reference signals associated with data transmitted by the first transmission block are all carried on a first frequency domain unit; ports of reference signals associated with data transmitted by the second transmission block are all carried on a second frequency domain unit.

13. The method according to claim 9, wherein: The first signaling is further used to indicate, for each transmission block, the frequency domain density of ports of reference signals associated with the transmitted data.

14. The method according to claim 9, wherein: The first signaling is further used to indicate, for each transmission block, the transmission power of a port of a reference signal associated with the transmitted data.

15. The method according to claim 9, wherein: The data transmission scheme of the data transmitted by each of the transmission blocks includes the index number of the combination of the coding scheme and the modulation scheme of the transmission block; the at least one transmission block includes a first transmission block and a second transmission block, and the index number of the combination of the coding scheme and the modulation scheme of the first transmission block and the index number of the combination of the coding scheme and the modulation scheme of the second transmission block are both less than a first threshold value.

16. The method according to claim 2, wherein: The frequency domain density of the at least one port is determined based on the data transmission scheme.

17. The method according to claim 2, wherein: The data transmission scheme is determined based on the frequency domain density of the at least one port.

18. A data transmission method, wherein: The method is applied to a second communication node and comprises: Sending a first signaling to a first communication node; the first signaling is used to indicate a data transmission scheme; the data transmission scheme includes a coding scheme and / or a modulation scheme; Send data to the first communication node according to the data transmission scheme indicated by the first signaling.

19. The method according to claim 18, wherein: The first signaling is further used to indicate at least one port of a reference signal associated with the data.

20. The method according to claim 19, wherein: The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with each port.

21. The method according to claim 18, wherein: The first signaling is also used to indicate a first signal, the first signal is used to provide a reference for receiving a reference signal associated with the data, and the coding scheme belongs to a first coding scheme set; wherein the first coding scheme set is determined from at least one coding scheme set based on the first signal.

22. The method according to claim 21, wherein: The channel characteristics of the first signal are the same as the channel characteristics of the reference signal, and the channel characteristics include at least one of the following: average delay, delay spread, Doppler frequency, and Doppler frequency spread.

23. The method according to claim 21, wherein: The first signaling is also used to indicate a frequency band used to transmit the data; the first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each frequency domain unit of the frequency band.

24. The method according to claim 21, wherein: The first signaling is also used to indicate the antenna panel used to transmit the data; the first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each of the antenna panels.

25. The method according to claim 21, wherein: The first signaling is further used to indicate at least one second signal, the second signal corresponds to at least one port group of the reference signal associated with the data, and the second signal is used to provide a reference based on a common channel characteristic for the corresponding port group; The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data associated with the port groups corresponding to each of the second signals.

26. The method according to claim 21, wherein: The first signaling is further used to indicate at least one transport block used to transmit the data and at least one port of a reference signal associated with the data transmitted by each transport block; The first signaling is used to indicate the data transmission scheme, including: the first signaling respectively indicates the data transmission scheme of the data transmitted by each of the transmission blocks.

27. The method according to claim 26, wherein: The at least one transmission block includes a first transmission block and a second transmission block, wherein ports of reference signals associated with data transmitted by the first transmission block are all carried on a first code division multiplexing group; ports of reference signals associated with data transmitted by the second transmission block are all carried on a second code division multiplexing group.

28. The method according to claim 26, wherein: The at least one transmission block includes a first transmission block and a second transmission block, wherein ports of reference signals associated with data transmitted by the first transmission block are all carried on a first time domain unit; ports of reference signals associated with data transmitted by the second transmission block are all carried on a second time domain unit.

29. A communication device, comprising: Memory and processor; The memory is coupled to the processor; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 28 is performed.

30. A computer-readable storage medium, wherein: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 28.

Images