Data processing method and related device

Abstract

The invention provides a data processing method and a related device, which can be applied to the technical field of communication. In the technical scheme provided by the invention, a second node receives a first mapping signal sent by a first node, the first mapping signal is obtained by mapping a first signal and a second signal through a joint layer, the first signal is used for transmitting control information, and the second signal is used for transmitting service data. The joint layer mapping is layer mapping performed on a joint signal of the first signal and the second signal; and performing layer de-mapping on the first mapping signal. In the method, when the first signal and the second signal are transmitted between the first node and the second node, the space resource utilization rate can be improved, so that the data transmission delay can be reduced, and the data transmission overhead can be reduced.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a data processing method and related apparatus. Background Technology

[0002] In existing communication systems, communication devices need to perform layer mapping on signals before transmitting them. For example, before a network device sends downlink signaling and downlink data to a terminal device via the physical downlink control channel (PDCCH) and physical downlink shared channel (PDSCH), it can map the modulation symbols of the signals carried by the PDCCH and PDSCH onto one or more layers of orthogonal frequency divided multiplexing (OFDM) symbols or resource elements (REs).

[0003] However, during use, it was found that when network devices send downlink signaling and downlink data through PDCCH and PDSCH, the data transmission latency is large. Summary of the Invention

[0004] This application provides a data processing method and related apparatus. When network devices send downlink signaling and downlink data through PDCCH and PDSCH, they can improve the utilization of space resources, thereby helping to reduce data transmission latency.

[0005] In a first aspect, this application provides a data processing method applied in a second node. The method includes: receiving a first mapped signal, wherein the first mapped signal is a signal obtained by combining a first signal and a second signal through a joint layer mapping, the first signal being used to transmit control information, the second signal being used to transmit service data, and the joint layer mapping being a layer mapping performed on a combined signal of the first signal and the second signal; and performing de-layer mapping on the first mapped signal.

[0006] In this method, the first mapping signal received by the second node can be sent by the first node.

[0007] The first node can be a network device, or a device that can be applied to a network device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the network device. For example, the module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0008] Optionally, this data processing method can be applied to, for example... Figure 1 In the communication system shown, as an example, the first node can be as follows: Figure 1 The network device shown.

[0009] Optionally, this data processing method can also be applied to O-RAN systems. As an example, the first node can be, for instance... Figure 3 The CU in the access network device shown, or as such Figure 4 The CU-CP or CU-UP in the access network device shown. As another example, the first node can be, for example... Figure 3 The DU or RU in the access network equipment shown.

[0010] In this method, the first node is the node that sends the first mapping signal; the first node can also be called the sending node.

[0011] The second node can be a terminal device, or a device that can be applied to a terminal device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the terminal device. For example, the module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0012] Optionally, this data processing method can be applied to, for example... Figure 1 In the communication system shown, as an example, the second node can be as follows: Figure 1 The terminal device shown.

[0013] Optionally, this data processing method can also be applied to O-RAN systems. As an example, the second node can be, for instance... Figure 3 The terminal device shown.

[0014] In this method, the second node is the node that receives the first mapping signal; the second node can also be called the receiving node.

[0015] In this application, the combined signal of the first signal and the second signal can be the signal obtained by combining and sorting the first signal and the second signal.

[0016] In this method, the first signal and the second signal are mapped through a joint layer, which enables spatial separation of the first signal and the second signal. When the first node transmits the first signal and the second signal between the second node, the utilization rate of spatial resources can be improved, thereby helping to reduce data transmission latency and data transmission overhead.

[0017] In some possible implementations, the first mapped signal is generated based on the first mapping method.

[0018] The first mapping method includes: the modulation symbols of the first signal and a portion of the modulation symbols of the second signal are mapped to the first layer, the remaining modulation symbols of the second signal are mapped to the second layer, and the starting position of the frequency domain resources of the first layer mapped to the portion of the modulation symbols of the second signal is different from the starting position of the frequency domain resources of the second layer mapped to the remaining modulation symbols of the second signal.

[0019] In this first mapping method, the first layer can contain one or more layers, and the second layer can also contain one or more layers.

[0020] Optionally, when the first layer contains multiple layers, some modulation symbols of the second signal are mapped to the last layer of the first layer.

[0021] As an example, the mapping position of the first mapped signal can be as follows: Figure 10 or Figure 11 As shown.

[0022] As another example, the mapping position of the first mapped signal can be as follows: Figure 12 or Figure 13 As shown.

[0023] As yet another example, the mapping position of the first mapped signal can be as follows: Figure 14 or Figure 15 As shown.

[0024] Optionally, in some embodiments, the modulation symbols mapped to the first layer may not include the modulation symbols of the second signal. That is, the modulation symbols of the first signal can be mapped to the first layer, and the modulation symbols of the second signal can be mapped to the second layer.

[0025] As an example, the mapping position of the first mapped signal can also be as follows: Figure 16 or Figure 17 As shown.

[0026] In this implementation, the first signal and the second signal can be jointly mapped based on the first mapping method. This enables spatial separation of the first signal and the second signal. When the first node transmits the first signal and the second signal between the second node, the utilization rate of spatial resources can be improved, which is conducive to reducing data transmission latency and data transmission overhead.

[0027] In some possible implementations, the first mapping method satisfies the following formula:

[0028]

[0029] in, The modulation symbol representing the first signal. The modulation symbol of the second signal, d(0) (i) represents the modulation symbol to be mapped, represents the number of mapped symbols of the first codeword of the first signal, represents the number of mapped symbols of the first codeword of the second signal, represents the number of symbols of the first mapped signal, layer represents the number of mapping layers, represents the number of symbols of the mapped signal corresponding to each layer, layer1 represents the number of layers of the modulation symbol mapping of the first signal, j represents the index of the mapping layer and 0 ≤ j < layer, i represents the index of the symbol, x (j) (i) represents the mapped signal of the i-th modulation symbol of the first signal mapped to the j-th layer, represents rounding up.

[0030] In this implementation, since the first layer in the first mapping method can include one or more, and the second layer can also include one or more, the first node can determine the number of layers of the first layer and the number of layers of the second layer based on the formula satisfied by the first mapping method, which is convenient for the subsequent first node to perform joint layer mapping on the first signal and the second signal, thereby helping to reduce the data transmission delay and data transmission overhead.

[0031] In some possible implementation manners, the first mapped signal is generated based on a second mapping method.

[0032] The second mapping method includes: mapping the modulation symbols of the joint signal of the first signal and the second signal to multiple layers.

[0033] As an example, the mapping position of the first mapped signal can be as Figure 18 or Figure 19 shown.

[0034] In this implementation, the first signal and the second signal can be jointly layer-mapped based on the second mapping method, so as to achieve spatial separation of the first signal and the second signal. When the first signal and the second signal are transmitted between the first node and the second node subsequently, the utilization rate of spatial resources can be improved, which is beneficial to reducing the data transmission delay and the data transmission overhead.

[0035] [[ID=三十五]]In some possible implementation manners, the second mapping method satisfies the following formula:

[0036] ]d

[0037] Wherein, represents the modulation symbol of the first signal, represents the modulation symbol of the second signal, d (0) (i) represents the modulation symbol to be mapped, This represents the number of mapped symbols of the first codeword of the first signal. This indicates the number of mapped symbols in the first codeword of the second signal. The symbol number represents the first mapped signal, and i represents the symbol index.

[0038] In this implementation, the first node can determine the signal after the first signal and the second signal are jointly sorted based on the formula satisfied by the second mapping method. This facilitates the subsequent joint layer mapping of the first signal and the second signal by the first node, thereby helping to reduce data transmission latency and data transmission overhead.

[0039] In some possible implementations, the first signal is arranged before the second signal in the combined signal.

[0040] In the first mapping method, the first signal can be a more important signal with higher reliability requirements. The second signal can be a less important signal with lower reliability requirements.

[0041] Generally, the lower the index of the mapping layer, the better the signal transmission quality. The first signal is arranged before the second signal, so that the first node can first map the modulation symbol of the first signal to the mapping layer with better transmission quality, which helps to ensure the transmission quality of the first signal.

[0042] In the second mapping method, the first signal can be arranged before the second signal. For each mapping layer, the mapping position of the modulation symbol of the first signal can be before the mapping position of the modulation symbol of the second signal. In this way, the node receiving the first mapped signal (or the receiving node) can better distinguish between the first signal and the second signal after receiving the first mapped signal.

[0043] In some possible implementations, the method further includes: receiving first information, the first information indicating a joint layer mapping of the first signal and the second signal.

[0044] Optionally, the first information can be carried in the Radio Resource Control (RRC) signaling or the Downlink Control Information (DCI).

[0045] In this implementation, the receiving node can determine that the first mapped signal is the signal obtained after performing joint layer mapping on the first signal and the second signal based on the first information. This is beneficial for the receiving node to perform de-layer mapping on the first mapped signal, thereby demodulating the first signal and the second signal.

[0046] In some possible implementations, the method further includes receiving second information, the second information indicating the mapping method of the first mapping signal.

[0047] The step of de-mapping the first mapped signal includes: de-mapping the first mapped signal based on the mapping method of the first mapped signal.

[0048] Optionally, the second information can be carried in the RRC signaling.

[0049] In this implementation, the second node can determine the mapping method of the first mapping signal based on the second information, and then perform de-mapping based on the mapping method, which helps to avoid inaccurate demodulation signals.

[0050] In some possible implementations, the method further includes sending third information, the third information indicating that the receiving node supports joint layer mapping of the first signal and the second signal.

[0051] Alternatively, the third information indicates that the second node supports joint layer mapping of the first signal and the second signal.

[0052] Optionally, the third information can be carried in the RRC signaling.

[0053] In this implementation, the first node will only generate and send the first mapping signal if it determines that the second node supports the joint layer mapping of the first and second signals, thus avoiding resource waste when the second node cannot demodulate the first mapping signal.

[0054] In some possible implementations, the first signal is a signal carried by the Physical Downlink Control Channel (PDCCH), and the second signal is a signal carried by the Physical Downlink Shared Channel (PDSCH).

[0055] In this method, the signals carried by the PDCCH and the PDSCH are mapped through a joint layer, which enables spatial separation of the signals carried by the PDCCH and the PDSCH. When the first node transmits the signals carried by the PDCCH and the PDSCH between the second node, the utilization rate of spatial resources can be improved, thereby reducing data transmission latency and data transmission overhead.

[0056] Secondly, this application provides a data processing method applied in a first node. The method includes: determining a first mapping signal, wherein the first mapping signal is obtained by mapping a first signal and a second signal through a joint layer, the first signal is used to transmit control information, the second signal is used to transmit service data, and the joint layer mapping is a layer mapping performed on a joint signal of the first signal and the second signal; and sending the first mapping signal.

[0057] In this method, the first node can be a network device, or a device that can be applied to a network device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the network device. For example, the module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0058] Optionally, this data processing method can be applied to, for example... Figure 1 In the communication system shown, as an example, the first node can be as follows: Figure 1 The network device shown.

[0059] Optionally, this data processing method can also be applied to O-RAN systems. As an example, the first node can be, for instance... Figure 3 The CU in the access network device shown, or as such Figure 4 The CU-CP or CU-UP in the access network device shown. As another example, the first node can be, for example... Figure 3 The DU or RU in the access network equipment shown.

[0060] In this method, the first node is the node that sends the first mapping signal; the first node can also be called the sending node.

[0061] In some possible implementations, the first mapped signal is generated based on the first mapping method.

[0062] The first mapping method includes: the modulation symbols of the first signal and a portion of the modulation symbols of the second signal are mapped to the first layer, the remaining modulation symbols of the second signal are mapped to the second layer, and the starting position of the frequency domain resources of the first layer mapped to the portion of the modulation symbols of the second signal is different from the starting position of the frequency domain resources of the second layer mapped to the remaining modulation symbols of the second signal.

[0063] In some possible implementations, the first mapping method satisfies the following formula:

[0064]

[0065] in, The modulation symbol representing the first signal. The modulation symbol of the second signal, d (0) (i) represents the modulation symbol to be mapped. This represents the number of mapped symbols of the first codeword of the first signal. This indicates the number of mapped symbols in the first codeword of the second signal. The first mapped signal has the number of symbols, and layer represents the number of mapping layers. Represents the number of symbols of the mapping signal corresponding to each layer. layer1 represents the number of layers for the modulation symbol mapping of the first signal. j represents the index of the mapping layer and 0 ≤ j < layer, i represents the index of the symbol, x (j) (i) represents the mapping signal obtained by mapping the modulation symbol of the i-th first signal to the j-th layer, Represents rounding up.

[0066] In some possible implementation manners, the first mapping signal is generated based on a second mapping manner.

[0067] The second mapping manner includes: mapping the modulation symbols of the combined signal of the first signal and the second signal to multiple layers.

[0068] In some possible implementation manners, the second mapping manner satisfies the following formula:

[0069]

[0070] Wherein, Represents the modulation symbol of the first signal, Represents the modulation symbol of the second signal, d (0) (i) represents the modulation symbol to be mapped, Represents the number of mapped symbols of the first codeword of the first signal, Represents the number of mapped symbols of the first codeword of the second signal, Represents the number of symbols of the first mapping signal, and i represents the symbol index.

[0071] In some possible implementation manners, the arrangement order of the first signal in the combined signal is before the second signal.

[0072] In some possible implementation manners, the method further includes: sending first information, where the first information indicates performing joint layer mapping on the first signal and the second signal.

[0073] In some possible implementation manners, the method further includes: sending second information, where the second information indicates the mapping manner of the first mapping signal, and the mapping manner includes a first mapping manner and a second mapping manner.

[0074] In some possible implementation manners, the method further includes: receiving third information, where the third information indicates that the receiving node supports performing joint layer mapping on the first signal and the second signal.

[0075] In some possible implementation manners, the first signal is the signal carried by the physical downlink control channel PDCCH, and the second signal is the signal carried by the physical downlink shared channel PDSCH.

[0076] Thirdly, this application provides a data processing apparatus that can be used in the second node of the first aspect. This data processing apparatus can be a terminal device, or a device applicable to the terminal device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the terminal device's functions. One possible implementation includes modules or units for implementing the methods in the first aspect and any possible implementation of the first aspect. For example, it may include modules or units corresponding to the execution of the methods / operations / steps / actions described in the first aspect. These modules or units can be hardware circuits, software, or a combination of hardware circuits and software. Optionally, each module or unit can implement its corresponding function by executing a computer program.

[0077] Fourthly, this application provides a data processing apparatus that can be used in the first node of the second aspect. This data processing apparatus can be a network device, or a device within a network device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the network device. One possible implementation includes modules or units for implementing the methods of the second aspect and any possible implementation of the second aspect. For example, it may include modules or units corresponding to each of the methods / operations / steps / actions described in the second aspect. These modules or units can be hardware circuits, software, or a combination of hardware circuits and software. Optionally, each module or unit can implement its corresponding function by executing a computer program.

[0078] Fifthly, this application provides a data processing apparatus, including a processor, for executing a computer program (or computer-executable instructions) stored in a memory, and / or for causing the apparatus to perform methods as described in any of the first to second aspects and any possible implementation thereof via logic circuitry.

[0079] In one possible implementation, the device also includes a memory.

[0080] In one possible implementation, the processor and memory are integrated together.

[0081] In another possible implementation, the aforementioned memory is located outside the data processing device.

[0082] In one possible implementation, the data processing device further includes a communication interface for communicating with other devices, such as transmitting or receiving data and / or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface.

[0083] In a sixth aspect, this application provides a computer-readable storage medium that stores a computer program or instructions for execution by a data processing apparatus, which, when executed on the data processing apparatus, cause the method described in any of the first to second aspects and any possible implementation thereof to be implemented.

[0084] In a seventh aspect, this application provides a computer program product containing instructions that, when the computer program product is run on a data processing device, cause the method described in any one of the first to second aspects and any possible implementation thereof to be implemented.

[0085] Eighthly, this application provides a communication system comprising a transmitting node and a receiving node. The receiving node is configured to perform the method described in the first aspect and any possible implementation thereof, and the transmitting node is configured to perform the method described in the first aspect and any possible implementation thereof.

[0086] It is understandable that the effects achievable in aspects two through eight can be referred to the description in aspect one, and will not be repeated here. Attached Figure Description

[0087] Figure 1 This is a schematic diagram of a communication system applicable to the embodiments of this application;

[0088] Figure 2 This is a schematic diagram illustrating the communication method between a network device and a terminal device provided in an embodiment of this application.

[0089] Figure 3 This is a schematic diagram of an Open Radio Access Network (O-RAN) system provided in an embodiment of this application.

[0090] Figure 4 This is a schematic diagram of the network element function division and protocol layer structure of the access network equipment in the O-RAN system in the embodiments of this application;

[0091] Figure 5 This is a schematic diagram of a layer mapping.

[0092] Figure 6 This is a schematic diagram of a mapping method between PDCCH and PDSCH signals;

[0093] Figure 7 This is a schematic diagram of another mapping method for PDCCH and PDSCH signals;

[0094] Figure 8 A schematic diagram showing the mapping positions of the modulation symbols of a PDCCH signal and a PDSCH signal to different layers;

[0095] Figure 9 This is a schematic flowchart of a data processing method provided in one embodiment of this application;

[0096] Figure 10 This is a schematic diagram of the mapping position of the first mapping signal according to an embodiment of this application;

[0097] Figure 11 This is a schematic diagram of the mapping position of the first mapping signal according to another embodiment of this application;

[0098] Figure 12 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0099] Figure 13 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0100] Figure 14 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0101] Figure 15 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0102] Figure 16 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0103] Figure 17 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0104] Figure 18 This is a schematic diagram of the mapping position of the first mapping signal in yet another embodiment of this application;

[0105] Figure 19 This is a schematic diagram of the mapping position of the first mapping signal according to another embodiment of this application;

[0106] Figure 20 This is a schematic diagram of the structure of a data processing apparatus provided in one embodiment of this application. Detailed Implementation

[0107] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0108] To facilitate a clear description of the technical solutions in the embodiments of this application, the terms "first" and "second" are used in the embodiments of this application to distinguish identical or similar items with essentially the same function and effect. For example, "first information" and "second information" are only used to distinguish different information and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and the terms "first" and "second" are not necessarily different.

[0109] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b and / or c can represent: a, b, c; a and b; a and c; b and c; or a and b and c. Here, a, b, and c can be single or multiple.

[0110] The technical solutions of this application can be applied to fifth-generation (5G) communication systems, such as 5G new radio (NR) communication systems, or to various communication systems evolving after 5G, such as future communication network systems. The methods provided in the embodiments of this application can also be applied to wireless WiFi systems, long-range Internet of Things (LoRa) systems, or vehicle-to-everything (V2X) systems. The methods provided in the embodiments of this application can also be applied to satellite communication systems. The satellite communication system can be integrated with the above-mentioned communication systems, and this application does not limit this integration.

[0111] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0112] To facilitate understanding of the embodiments of this application, firstly, in conjunction with Figure 1 This describes a communication system applicable to embodiments of this application. For example... Figure 1 As shown, the communication system 100 may include at least one network device (such as...) Figure 1 110a and 110b in the above), may also include at least one terminal device (such as Figure 1 (120a to 120j in the series).

[0113] In this context, network equipment can be a device deployed in a wireless access network to provide wireless communication functions for terminal devices. For example, network equipment may include, but is not limited to: next-generation base stations (gNodeB, gNB) in 5G communication systems, base stations in future communication network systems, or access nodes in WiFi systems; evolved node B (eNB), radio network controller (RNC), home base station (e.g., home evolved NodeB, or home Node B, HNB), base band unit (BBU), transmission reception point (TRP), and transmitting point (TP) in long term evolution (LTE) systems.

[0114] Network equipment can provide services to a cell. User equipment communicates with the base station through the transmission resources used by the cell. The cell can be the cell corresponding to the base station. The cell can belong to a macro base station or the base station corresponding to a small cell. The small cell can include: metro cell, micro cell, pico cell, femto cell, etc.

[0115] Network equipment can also function as a base station in device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, drone communication, and machine-to-machine (M2M) communication. Optionally, wireless access network equipment can be satellites, macro base stations, micro base stations, indoor stations, relay nodes, or donor nodes, providing wireless communication services to user equipment. It can also include wireless controllers, servers, relay stations, vehicles or in-vehicle equipment, wearable devices, and network equipment in future network evolution scenarios. For example, wireless access network equipment in vehicle-to-everything (V2X) technology can be roadside units (RSUs).

[0116] In this embodiment of the application, "network device" can also be understood as a collective term for all devices (including sites) on the network side. For example, multiple sites can be collectively referred to as network devices. A site refers to a transmission node located in a specific physical location. In other words, network device conceptually includes sites.

[0117] In this embodiment, the form of the network device is not limited. The device used to implement the function of the network device can be the network device itself, or it can be a device that supports the network device in implementing the function, such as a chip system. The device can be installed in the network device or used in conjunction with the network device.

[0118] Terminal devices can also be called terminals, user equipment (UE), mobile stations (MS), mobile terminals (MT), etc., or devices used to provide voice or data connectivity to users, and can also be Internet of Things (IoT) devices. For example, terminal devices include handheld devices with wireless connectivity, vehicle-mounted devices, etc. Currently, terminal devices can include: mobile phones, tablets, laptops, handheld computers, subscriber units, cellular phones, smartphones, wireless data cards, personal digital assistants (PDAs), tablet computers, wireless modems, handsets, laptop computers, machine-type communication (MTC) terminals, mobile internet devices (MIDs), wearable devices (such as smartwatches, smart bracelets, pedometers, smart glasses, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), satellite terminals, virtual reality (VR) devices, augmented reality (AR) devices, smart point-of-sale (POS) machines, customer-premises equipment (CPE), light user equipment (UE), and reduced-capability user equipment (REDCAP). Wireless terminals include: UE (User Equipment), wireless terminals in industrial control, smart home devices (e.g., refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in autonomous driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes; and flying equipment (e.g., intelligent robots, hot air balloons, drones, airplanes). Terminal devices can also be vehicle-mounted units, such as complete vehicle units, vehicle-mounted modules, vehicle-mounted chips, onboard units (OBUs), or telematics boxes (T-BOXs). Terminal devices can also be other devices with terminal functions; for example, a terminal device can also be a device that performs terminal functions in D2D communication.

[0119] In this application embodiment, the device used to implement the functions of the terminal device can be a terminal or a device capable of supporting the terminal device in implementing the functions, such as a chip system, a communication module, or a modem, etc., and this device can be installed in the terminal device. In this application embodiment, the chip system can be composed of chips or can include chips and other discrete devices. The embodiments of this application do not limit the specific technology or specific device form adopted by the terminal device.

[0120] In this application, the number of network devices and terminal devices is not limited. For example, the number of network devices can be at least one, and each of the at least one network device can be connected to at least one terminal device.

[0121] In this application, network equipment and terminal equipment can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of wireless access network equipment and terminal equipment.

[0122] In this communication system, the communication between network devices and terminal devices can also be represented in another form, such as... Figure 2 As shown, the terminal device includes a processor 101, a memory 102, and a transceiver 103. The transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The network device also includes a processor 201, a memory 202, and a transceiver 203. The transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be used to receive transmission control information through the antenna 1033, and the transmitter 1031 can be used to send transmission feedback information to the network device through the antenna 1033. The transmitter 2031 can be used to send transmission control information to the terminal device through the antenna 2033, and the receiver 2032 can be used to receive transmission feedback information sent by the terminal device through the antenna 2033.

[0123] Optionally, the network device in this application can also be replaced with a chip within a network device. Similarly, the terminal device in this application can be replaced with a chip within a terminal device. In other words, Figure 2 The network element structure diagram shown can also represent the chip structure diagram applicable to this application. For example... Figure 2As shown, the terminal device's chip includes a processor 101, a memory 102, and a transceiver 103. The transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The network device's chip also includes a processor 201, a memory 202, and a transceiver 203. The transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be used to receive transmission control information through the antenna 1033, and the transmitter 1031 can be used to send transmission feedback information to the network device through the antenna 1033. The transmitter 2031 can be used to send transmission control information to the terminal device through the antenna 2033, and the receiver 2032 can be used to receive transmission feedback information sent by the terminal device through the antenna 2033.

[0124] Optionally, the embodiments of this application can also be applied to, for example... Figure 3 The diagram shows an open radio access network (O-RAN) system. In this system, network devices are also called radio access network (RAN) devices. RAN devices can communicate with core network (CN) devices via backhaul links and with terminal devices via air interfaces.

[0125] Specifically, the baseband unit (BBU) in the access network equipment can communicate with the core network via a backhaul link, while the radio unit (RU) in the access network equipment can communicate with at least one terminal device via an air interface. The BBU communicates with at least one RU via a fronthaul link. The BBU and RU may or may not be co-located.

[0126] The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate via at least one midhaul link.

[0127] Optionally, in an O-RAN system, the network element function division and protocol layer structure diagram of the access network equipment can be as follows: Figure 4 As shown.

[0128] In some examples, the CU is a logical node carrying the radio resource control (RRC) layer, service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions of the access network equipment. The CU connects to network nodes such as the core network through interfaces, which can be interfaces such as E2 interfaces. Optionally, the CU may have some core network functions. The CU (e.g., PDCP layer and higher layers) connects to the DU (e.g., RLC layer and lower layers) through interfaces, which can be interfaces such as F1 interfaces. In some examples, these interfaces (e.g., F1 interfaces) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transmission, etc.). F1AP is the application protocol of the F1 interface, defining the F1 signaling procedures in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0129] In some examples, the CU can be split into a control plane portion (CU-CP) and a user plane portion (CU-UP). The CU-CP is a logical node carrying the RRC layer and PDCP (PDCP control plane part of PDCP, PDCP-C) and is used to implement the CU's control plane functions. The CU-CP can interact with network elements in the core network used to implement control plane functions. These network elements in the core network can be access and mobility function (AMF) elements, such as the access and mobility management function (AMF) in a 5G system, responsible for mobility management in the mobile network, such as terminal device location updates, terminal device registration with the network, and terminal device handover. The CU-UP is a logical node carrying the SDAP layer and PDCP (PDCP user plane part of PDCP, PDCP-U) and is used to implement the CU's user plane functions. The CU-UP can interact with network elements in the core network used to implement user plane functions. In the core network, network elements used to implement user plane functions, such as the user plane function (UPF) in a 5G system, are responsible for forwarding and receiving data in terminal devices. The above configuration of CU and DU is merely an example; the functions of CU and DU can be configured as needed. For example, CU or DU can be configured to have more protocol layer functions, or to have only some protocol layer processing functions. For instance, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of CU or DU can be divided according to service type or other system requirements, such as by latency, placing functions that need to meet low latency requirements in the DU and functions that do not need to meet such latency requirements in the CU.

[0130] In some examples, a DU is a logical node that carries the radio link control (RLC) layer, medium access control (MAC) layer, higher physical layer (Higher PHY) layer, and other functions. In some examples, a DU can control at least one RU. The DU connects to the RU through interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes the PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation.

[0131] In some examples, the RU is a logical node that carries both lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, the RU can be a 3GPP transmission reception point (TRP), a remote radio head (RRH), or other similar entities. In some examples, the Lower PHY includes PHY processing functions such as Fast Fourier Transform (FFT), Inverse Fast Fourier Transform (IFFT), digital beamforming, and filtering. The RU communicates with one or more UEs via a radio link.

[0132] The DU and RU can be co-located or not. The DU and RU exchange control plane and user plane information via a fronthaul link through a lower-layer split-control, user, and synchronization (LLS-CUS) interface. LLS-CUS may include LLS-C and LLS-U interfaces that provide the control plane (C-Plane) and user plane (U-Plane), respectively. In some examples, the control plane (C-Plane) refers to real-time control between the DU and RU. The DU and RU exchange management information via an LLS-M interface on the fronthaul link; the management plane (M-Plane) refers to non-real-time management operations between the DU and RU.

[0133] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0134] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called O-CU (open CU), DU can also be called O-DU, CU-CP can also be called O-CU-CP, CU-UP can also be called O-CU-UP, and RU can also be called O-RU. For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples.

[0135] In existing communication systems, communication devices need to perform layer mapping on signals before transmitting them. Layer mapping is the process of mapping codewords to different layers. A codeword is an independent encoded data stream from the transmission channel to the physical layer, which is a data stream formed by a transport block (TB) through channel coding, interleaving, scrambling, modulation, and other processes.

[0136] Here, the layer refers to the transport layer, which can be understood as the different spatial channels that can be distinguished between communication devices. One transport layer corresponds to the transmission of one data stream.

[0137] In this embodiment, the number of mapping layers can be data streams that can be transmitted independently and in parallel. Generally, the number of mapping layers can be less than or equal to the number of antenna ports. By mapping codewords to different layers, multiple data streams can be transmitted through multiple antenna ports to achieve spatial multiplexing.

[0138] The codewords here can be understood as the modulation symbols of a signal. In the embodiments of this application, layer mapping of the signal can be understood as mapping the modulation symbols of the signal to one or more layers.

[0139] Figure 5This is a schematic diagram of a layer mapping. In this example, taking a single codeword with two streams as an example, assume that a codeword contains X(0), X(1), X(2), X(3), X(4) and X(5), where X(0), X(2) and X(4) can be mapped to layer 1 after layer mapping, and X(1), X(3) and X(5) can be mapped to layer 2 after layer mapping.

[0140] Before sending downlink signaling and downlink data to terminal devices via PDCCH and PDSCH, network devices can map the modulation symbols of the signals carried by PDCCH and PDSCH onto one or more layers of OFDM symbols or REs.

[0141] The signals carried by the PDCCH can be used to transmit downlink control information (DCI). DCI can be used to indicate the transmission of downlink scheduling information (for terminal equipment to receive PDSCH), uplink scheduling information (for terminal equipment to transmit physical uplink sharing channel (PUSCH)), and other physical layer control information, such as slot format indicator (SFI), pre-emption indicator (PI), and power control commands, to assist terminal equipment in receiving and transmitting data.

[0142] The signals carried by the PDSCH can be used to transmit user data.

[0143] In this application, the signal carried by PDCCH can be called PDCCH signal, and the signal carried by PDSCH can be called PDSCH signal.

[0144] Figure 6 This is a schematic diagram illustrating a mapping method between PDCCH and PDSCH signals. In this example, all boxes can represent a layer, where one column can represent an OFDM symbol, and one row can represent a RE. The modulation symbol of the PDCCH signal can be mapped to the first two OFDM symbols, and the modulation symbol of the PDSCH signal can be mapped to the third OFDM symbol. This example applies to cases where PDCCH signal rate matching is not enabled.

[0145] In this example, the modulation symbols of the PDCCH signal and the PDSCH signal are mapped to different OFDM symbols, i.e., time-division multiplexing is applied to the PDCCH and PDSCH signals. When the modulation symbols of the PDCCH signal are mapped to a portion of the REs on the first two OFDM symbols, the remaining REs on those first two OFDM symbols will not be mapped to the modulation symbols of other signals. In other words, the remaining REs on those first two OFDM symbols will not transmit information, resulting in a waste of frequency domain resources.

[0146] Figure 7 This is a schematic diagram illustrating another mapping method for PDCCH and PDSCH signals. In this example, all boxes can represent a layer, where one column represents an OFDM symbol and one row represents a RE. The modulation symbols of the PDCCH signal can be mapped to some REs on the first two OFDM symbols, and the modulation symbols of the PDSCH signal can be mapped to the remaining REs on the first two OFDM symbols and the third OFDM symbol. This example is applicable when PDCCH signal rate matching is enabled.

[0147] In this example, the modulation symbols of the PDCCH signal and the PDSCH signal can be mapped to the same OFDM symbol. That is, time division and frequency division of the PDCCH signal and the PDSCH signal can improve the utilization of frequency domain resources.

[0148] Optionally, in some scenarios, the modulation symbols of the PDCCH signal and the PDSCH signal can be mapped to different layers. Figure 7 Taking the mapping method as an example, the mapping positions of the modulation symbols of the PDCCH signal and the PDSCH signal to different layers can be illustrated as follows: Figure 8 As shown. In this example, the modulation symbols of the PDCCH signal can be mapped to layer 1, and the modulation symbols of the PDSCH signal can be mapped to both layer 1 and layer 2. The positions of the modulation symbols of the PDCCH and PDSCH signals mapped to layer 1 are as follows: Figure 7 Similarly, the starting positions of the REs mapped from the modulation symbols of the PDSCH signal to the first two OFDM symbols of Layer 2 are the same as the starting positions of the REs mapped from the modulation symbols of the PDSCH signal to the first two OFDM symbols of Layer 1. In other words, the starting positions of the frequency domain resources mapped from the modulation symbols of the PDSCH signal to Layer 2 are the same as the starting positions of the frequency domain resources mapped from the modulation symbols of the PDSCH signal to Layer 1.

[0149] In this example, due to the high reliability requirements of the PDCCH signal, the blank positions in layer 2 (which are the same as the positions of the PDCCH signal mapped to layer 1) cannot be mapped to the modulation symbols of the PDSCH signal, so as to ensure that the terminal device can demodulate the PDCCH signal.

[0150] However, for some high signal-to-noise ratio terminal devices, the reliability requirements for the mapped signals are lower. Even if the location of the modulation symbols of the PDSCH signal mapped to the frequency domain resources in Layer 2 coincides with the location of the modulation symbols of the PDCCH signal mapped to the frequency domain resources in Layer 1, the terminal device can still demodulate the PDCCH signal. In this case, if the PDCCH and PDSCH signals are mapped using the existing mapping method, some resources in Layer 2 will not transmit information, resulting in wasted spatial resources, which in turn affects the data transmission rate and leads to a large data transmission delay.

[0151] Therefore, this application provides a data processing method to solve the problem of large data transmission delay when network devices send downlink signaling and downlink data through PDCCH and PDSCH in the prior art.

[0152] In the technical solution of this application, before the network device sends downlink signaling and downlink data to the terminal device through PDCCH and PDSCH, the combined signal of PDCCH signal and PDSCH signal can be layer-mapped to achieve spatial division of PDCCH signal and PDSCH signal.

[0153] In this application, the combined signal of the PDCCH signal and the PDSCH signal can be a signal obtained by jointly sorting the PDCCH signal and the PDSCH signal. For example, the modulation symbols obtained by sorting the modulation symbols of the signal carried by the PDCCH signal and the signal carried by the PDSCH signal in a sequential order are concatenated together.

[0154] As an example, suppose the modulation symbols of the PDCCH signal are mapped to layer 1, and the modulation symbols of the PDSCH signal are mapped to both layers 1 and 2. The location of the frequency domain resources of the PDSCH signal's modulation symbols mapped to layer 2 can overlap with the location of the frequency domain resources of the PDCCH signal's modulation symbols mapped to layer 1.

[0155] The fact that the location where the modulation symbols of the PDSCH signal are mapped to the frequency domain resources of layer 2 coincides with the location where the modulation symbols of the PDCCH signal are mapped to the frequency domain resources of layer 1 can be understood as follows: the location where the modulation symbols of the PDSCH signal are mapped to the frequency domain resources of layer 2 may include all or part of the location where the modulation symbols of the PDCCH signal are mapped to the frequency domain resources of layer 1.

[0156] For example, assuming that the modulation symbol of the PDCCH signal is mapped to the first RE on the first two OFDM symbols at the location of Layer 1, where the first RE may contain one or more REs, then the modulation symbol of the PDSCH signal is mapped to the location of Layer 2 at the location of the first RE on the first two OFDM symbols, which may contain all or part of the REs.

[0157] In this method, when network devices send downlink signaling and downlink data to terminal devices via PDCCH and PDSCH, the utilization rate of spatial resources can be improved, thereby helping to reduce data transmission latency and data transmission overhead.

[0158] Next, this application will combine Figures 9 to 20 The method described in this application will be explained in detail.

[0159] Figure 9 This is a schematic flowchart of a data processing method provided in one embodiment of this application.

[0160] S901, the first node determines the first mapping signal. The first mapping signal is obtained by mapping the first signal and the second signal through the joint layer. The first signal is used to transmit control information, and the second signal is used to transmit service data. The joint layer mapping is a layer mapping of the joint signal of the first signal and the second signal.

[0161] In this method, the first node can be a network device, or a device that can be applied to a network device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the network device. For example, the module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0162] Optionally, this data processing method can be applied to, for example... Figure 1 In the communication system shown, as an example, the first node can be as follows: Figure 1 The network device shown.

[0163] Optionally, this data processing method can also be applied to O-RAN systems. As an example, the first node can be, for instance... Figure 3 The CU in the access network device shown, or as such Figure 4 The CU-CP or CU-UP in the access network device shown. As another example, the first node can be, for example... Figure 3 The DU or RU in the access network equipment shown.

[0164] In this application, the combined signal of the first signal and the second signal can be the signal obtained by combining and sorting the first signal and the second signal.

[0165] As an example, the first signal can be a signal carried by the PDCCH, or a PDCCH signal; the second signal can be a signal carried by the PDSCH, or a PDSCH signal. As another example, the first signal can be a signal carried by the physical uplink control channel (PUCCH), or a PUSCH signal; the second signal can be a signal carried by the PUSCH, or a PUSCH signal. This application will subsequently use the example of the first signal being a PDCCH signal and the second signal being a PDSCH signal for further explanation.

[0166] In one possible implementation, the first mapped signal can be generated based on the first mapping method.

[0167] In this first mapping method, the modulation symbols of the first signal and part of the modulation symbols of the second signal can be mapped to the first layer, and the remaining modulation symbols of the second signal can be mapped to the second layer. The starting position of the frequency domain resources of the first layer mapped to part of the modulation symbols of the second signal is different from the starting position of the frequency domain resources of the second signal mapped to the second layer.

[0168] In this context, the modulation symbol represents the symbol obtained after modulating the signal. The modulation symbol of the first signal can be understood as the symbol obtained after modulating the first signal, and the modulation symbol of the second signal can be understood as the symbol obtained after modulating the second signal.

[0169] The remaining modulation symbols of the second signal can be other modulation symbols besides some of the modulation symbols of the second signal.

[0170] When the first signal is a PDCCH signal, the modulation symbol of the PDCCH signal can be a symbol generated by modulating the PDCCH signal using a first modulation scheme. For example, the first modulation scheme may include quadrature phase shift keying (QPSK).

[0171] When the second signal is a PDSCH signal, the modulation symbol of the PDSCH signal can be a symbol generated by modulating the PDSCH signal using the second modulation scheme. For example, the second modulation scheme may include QPSK, 16-quadrature amplitude modulation (16-QAM), 64-QAM, and 256-QAM.

[0172] In this first mapping method, the first layer can contain one or more layers, and the second layer can also contain one or more layers.

[0173] Optionally, when the first layer contains multiple layers, some modulation symbols of the second signal are mapped to the last layer of the first layer.

[0174] Optionally, when the second layer comprises multiple layers, the starting position of the frequency domain resources of the first layer to which some modulation symbols of the second signal are mapped is different from the starting position of the frequency domain resources of at least one of the multiple layers of the second layer to which the remaining modulation symbols of the second signal are mapped.

[0175] In this method, before the first node performs joint layer mapping on the first signal and the second signal, it needs to perform joint sorting on the first signal and the second signal.

[0176] Optionally, the first signal is arranged before the second signal, that is, the first signal is arranged before the second signal in the joint signal, so that the first node can perform joint layer mapping on the first signal and the second signal based on the arrangement order of the first signal and the second signal.

[0177] In other words, the order of the modulation symbols of the first signal is before that of the modulation symbols of the second signal, so that the first node can map the modulation symbols of the first signal and the modulation symbols of the second signal to different layers based on the order of their arrangement.

[0178] The first signal here can be a more important signal with high reliability requirements. The second signal can be a less important signal with lower reliability requirements.

[0179] Generally, the lower the index of the mapping layer, the better the signal transmission quality. The first signal is arranged before the second signal, so that the first node can first map the modulation symbol of the first signal to the mapping layer with better transmission quality, which helps to ensure the transmission quality of the first signal.

[0180] Taking the first signal as the PDCCH signal and the second signal as the PDSCH signal as an example, assuming that the modulation symbols of the PDCCH signal and the PDSCH signal can be as follows: Figure 10 As shown in (a) above, the mapping position of the first mapped signal can be as follows: Figure 10 As shown in (b) of the diagram.

[0181] In this example, the modulation symbols of the PDCCH signal include X(0), X(1) and X(2), and the modulation symbols of the PDSCH signal include Y(0), Y(1), Y(2), Y(3), ..., Y(11).

[0182] After the first node performs joint sorting of the PDCCH and PDSCH signals, the order of the modulation symbols of the PDCCH and PDSCH signals can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), ..., Y(11).

[0183] Among them, X(0), X(1), X(2), Y(0), Y(1) can be mapped to layer 0 in the order of arrangement, and Y(2), Y(3), ..., Y(11) can be mapped to layer 1 and layer 2 in the order of arrangement.

[0184] Optionally, Y(2), Y(3), ..., Y(11) can be cross-mapped to layer 1 and layer 2 in the order of arrangement. For example, Y(2), Y(4), Y(6), Y(8) and Y(10) can be mapped to layer 1, and Y(3), Y(5), Y(7), Y(9) and Y(11) can be mapped to layer 2.

[0185] In this example, the first layer contains layer 0, and the second layer contains layers 1 and 2.

[0186] Understandable. Figure 10 The example shown illustrates this by assuming that each layer contains one OFDM symbol.

[0187] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapped signal can be as follows: Figure 11 As shown.

[0188] In this example, the modulation symbols of the PDCCH signal and some of the modulation symbols of the PDSCH signal can be mapped to layer 0, and the remaining modulation symbols of the PDSCH signal can be mapped to layers 1 and 2.

[0189] In this context, the first modulation symbol in the modulation symbols of the PDCCH signal and the partial modulation symbols of the PDSCH signal can be mapped to the first two OFDM symbols of layer 0, and the second modulation symbol in the partial modulation symbols of the PDSCH signal can be mapped to the third OFDM symbol of layer 0. The second modulation symbol is any other modulation symbol in the partial modulation symbols of the PDSCH signal besides the first modulation symbol.

[0190] In this example, the starting position of the partial modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 0 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1, and the starting position of the partial modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 0 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 2.

[0191] Optionally, in other embodiments, the first layer may comprise multiple layers. In this case, the modulation symbols of the first signal and partial modulation symbols of the second signal may be mapped to multiple layers of the first layer based on an arrangement order.

[0192] As an example, suppose the modulation symbols of the PDCCH signal and the PDSCH signal can be as follows: Figure 12 As shown in (a) above, the mapping position of the first mapped signal can be as follows: Figure 12 As shown in (b) of the diagram.

[0193] In this example, it is assumed that the modulation symbols of the PDCCH signal include X(0), X(1), X(2), ..., X(7), and the modulation symbols of the PDSCH signal include Y(0), Y(1), Y(2), Y(3), ..., Y(11).

[0194] After the first node performs joint sorting of the PDCCH and PDSCH signals, the order of the modulation symbols of the PDCCH and PDSCH signals can be X(0), X(1), X(2), ..., X(7), Y(0), Y(1), Y(2), Y(3), ..., Y(11).

[0195] Among them, X(0), X(1), X(2), X(3), X(4) can be mapped to layer 0 in the order of arrangement, X(5), X(6), X(7), Y(0), Y(2) can be mapped to layer 1 in the order of arrangement, and Y(2), Y(3), ..., Y(11) can be mapped to layer 2 and layer 3 in the order of arrangement.

[0196] Optionally, Y(2), Y(3), ..., Y(11) can be cross-mapped to layers 2 and 3 in the order of arrangement. For example, Y(2), Y(4), Y(6), Y(8) and Y(10) can be mapped to layer 1, and Y(3), Y(5), Y(7), Y(9) and Y(11) can be mapped to layer 1.

[0197] In this example, the first layer contains layer 0 and layer 1, and the second layer contains layer 2 and layer 3.

[0198] Understandable. Figure 12 The example shown illustrates this by assuming that each layer contains one OFDM symbol.

[0199] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapped signal can be as follows: Figure 13 As shown.

[0200] In this example, some modulation symbols of the PDCCH signal can be mapped to layer 0, the remaining modulation symbols of the PDCCH signal and some modulation symbols of the PDSCH signal can be mapped to layer 1, and the remaining modulation symbols of the PDSCH signal can be mapped to layers 2 and 3.

[0201] The remaining modulation symbols of the PDCCH signal are the other modulation symbols in the PDCCH signal besides the partial modulation symbols of the PDCCH signal.

[0202] The remaining modulation symbols of the PDCCH signal and the first modulation symbol in the partial modulation symbols of the PDSCH signal can be mapped to the first two OFDM symbols of layer 1. The second modulation symbol in the partial modulation symbols of the PDSCH signal can be mapped to the third OFDM symbol of layer 1. The second modulation symbol is the other modulation symbols in the partial modulation symbols of the PDSCH signal besides the first modulation symbol.

[0203] In this example, the starting position of the partial modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 2, and the starting position of the partial modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 3.

[0204] Optionally, in other embodiments, the second layer may comprise a single layer. In this case, the remaining modulation symbols of the second signal may be mapped onto the second layer based on their permutation order.

[0205] As an example, suppose the modulation symbols of the PDCCH signal and the PDSCH signal can be as follows: Figure 14 As shown in (a) above, the mapping position of the first mapped signal can be as follows: Figure 14 As shown in (b) of the diagram.

[0206] In this example, it is assumed that the modulation symbols of the PDCCH signal include X(0), X(1) and X(2), and the modulation symbols of the PDSCH signal include Y(0), Y(1), Y(2), Y(3), ..., Y(6).

[0207] After the first node performs joint sorting of the PDCCH and PDSCH signals, the order of the modulation symbols of the PDCCH and PDSCH signals can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), ..., Y(6).

[0208] Among them, X(0), X(1), X(2), Y(0), Y(1) can be mapped to layer 0 in the order of arrangement, and Y(2), Y(3), ..., Y(6) can be mapped to layer 1 in the order of arrangement.

[0209] In this example, the first layer contains layer 0, and the second layer contains layer 1.

[0210] Understandable. Figure 14 The example shown illustrates this by assuming that each layer contains one OFDM symbol.

[0211] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapped signal can be as follows: Figure 15 As shown.

[0212] In this example, the modulation symbols of the PDCCH signal and some of the modulation symbols of the PDSCH signal can be mapped to layer 0, and the remaining modulation symbols of the PDSCH signal can be mapped to layer 1.

[0213] In this context, the first modulation symbol in the modulation symbols of the PDCCH signal and the partial modulation symbols of the PDSCH signal can be mapped to the first two OFDM symbols of layer 0, and the second modulation symbol in the partial modulation symbols of the PDSCH signal can be mapped to the third OFDM symbol of layer 0. The second modulation symbol is any other modulation symbol in the partial modulation symbols of the PDSCH signal besides the first modulation symbol.

[0214] In this example, the starting position of the partial modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 0 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1.

[0215] Optionally, in some embodiments, the modulation symbols mapped to the first layer may not include the modulation symbols of the second signal. That is, the modulation symbols of the first signal can be mapped to the first layer, and the modulation symbols of the second signal can be mapped to the second layer.

[0216] Optionally, the first layer may contain one or more layers, and the second layer may also contain one or more layers.

[0217] As an example, suppose the modulation symbols of the PDCCH signal and the PDSCH signal can be as follows: Figure 16 As shown in (a) above, the mapping position of the first mapped signal can be as follows: Figure 16 As shown in (b) of the diagram.

[0218] In this example, it is assumed that the modulation symbols of the PDCCH signal include X(0), X(1), X(2), X(3) and X(4), and the modulation symbols of the PDSCH signal include Y(0), Y(1), Y(2), Y(3) and Y(4).

[0219] After the first node performs joint sorting of the PDCCH and PDSCH signals, the order of the modulation symbols of the PDCCH and PDSCH signals can be X(0), X(1), X(2), X(3), X(4), Y(0), Y(1), Y(2), Y(3) and Y(4).

[0220] Among them, X(0), X(1), X(2), X(3) and X(4) can be mapped to layer 0 in the order of arrangement, and Y(0), Y(1), Y(2), Y(3) and Y(4) can be mapped to layer 1 in the order of arrangement.

[0221] In this example, the first layer contains layer 0, and the second layer contains layer 1.

[0222] Understandable. Figure 16 The example shown illustrates this by assuming that each layer contains one OFDM symbol.

[0223] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapped signal can be as follows: Figure 17 As shown.

[0224] In this implementation, the first signal and the second signal are jointly mapped at the layer based on the first mapping method. This enables spatial separation of the first signal and the second signal. When the first node transmits the first signal and the second signal between the second node, the utilization rate of spatial resources can be improved, which is conducive to reducing data transmission latency and data transmission overhead.

[0225] Optionally, the first mapping method can satisfy the following formula:

[0226]

[0227] in, The modulation symbol representing the first signal. The modulation symbol of the second signal, d (0) (i) represents the modulation symbol to be mapped, i.e., the signal after joint sorting of the first and second signals. This represents the number of mapped symbols of the first codeword of the first signal. This indicates the number of mapped symbols in the first codeword of the second signal. The first mapped signal has the number of symbols, and layer represents the number of mapping layers. Indicates the number of symbols of the mapping signal corresponding to each layer, layer1 represents the number of layers for the modulation symbol mapping of the first signal, j represents the index of the mapping layer, and 0 ≤ j < layer, i represents the index of the symbol, x (j) (i) represents the mapping signal obtained by mapping the modulation symbol of the i-th first signal to the j-th layer, Indicates rounding up.

[0228] Optionally, in some examples, the index of the mapping layer is j, representing the (j + 1)-th mapping layer.

[0229] As an example, assume that the total number of symbols of the modulation symbols of the first signal and the second signal is 28, then the number of symbols of the first mapping signal is 28, that is And assume that the number of mapping layers is 4, then And assume that the total number of symbols of the modulation symbols of the first signal is 8, then

[0230] In this example, for the first mapping layer, j = 0, x(0)(i) = d(0)(i).

[0231] For the second mapping layer, j = 1, x (1) (i) = d (0) (i + 7).

[0232] For the third mapping layer, j = 2, x (2) (i) = d (0) (2 * i + 14).

[0233] For the fourth mapping layer, j = 3, x (3) (i) = d (0) (2 * i + 14 + 1).

[0234] Since in the first mapping method, the first layer can include one or more, and the second layer can also include one or more, the first node can determine the number of layers of the first layer and the number of layers of the second layer based on the formula satisfied by the first mapping method, which is convenient for the first node to perform joint layer mapping on the first signal and the second signal, thereby helping to reduce data transmission delay and data transmission overhead.

[0235] In another possible implementation, the first mapping signal can be generated based on a second mapping method.

[0236] In this second mapping method, the modulation symbols of the joint signal of the first signal and the second signal can be mapped to multiple layers.

[0237] Or rather, the modulation symbols of the first signal and the modulation symbols of the second signal can be jointly mapped to multiple layers.

[0238] In this context, the modulation symbol represents the symbol obtained after modulating the signal. The modulation symbol of the first signal can be understood as the symbol obtained after modulating the first signal, and the modulation symbol of the second signal can be understood as the symbol obtained after modulating the second signal.

[0239] When the first signal is a PDCCH signal, the modulation symbol of the PDCCH signal can be a symbol generated by modulating the PDCCH signal using a first modulation scheme. For example, the first modulation scheme may include quadrature phase shift keying (QPSK).

[0240] When the second signal is a PDSCH signal, the modulation symbol of the PDSCH signal can be a symbol generated by modulating the PDSCH signal using the second modulation scheme. For example, the second modulation scheme may include QPSK, 16-quadrature amplitude modulation (16-QAM), 64-QAM, and 256-QAM.

[0241] In this method, before the first node performs joint layer mapping on the first signal and the second signal, it needs to perform joint sorting on the first signal and the second signal.

[0242] Optionally, the first signal is arranged before the second signal, that is, the first signal is arranged before the second signal in the joint signal, so that the first node can perform joint layer mapping on the first signal and the second signal based on the arrangement order of the first signal and the second signal.

[0243] In other words, the modulation symbols of the first signal are arranged before the modulation symbols of the second signal. This allows the first node to map the modulation symbols of the first and second signals to different layers based on their order. Consequently, the node receiving the first mapped signal can better distinguish between the first and second signals.

[0244] Taking the first signal as the PDCCH signal and the second signal as the PDSCH signal as an example, assuming that the modulation symbols of the PDCCH signal and the PDSCH signal can be as follows: Figure 18 As shown in (a) above, the mapping position of the first mapped signal can be as follows: Figure 18 As shown in (b) of the diagram.

[0245] In this example, the modulation symbols of the PDCCH signal include X(0), X(1) and X(2), and the modulation symbols of the PDSCH signal can include Y(0), Y(1), Y(2), Y(3), ..., Y(12).

[0246] After the first node performs joint sorting of the PDCCH and PDSCH signals, the order of the modulation symbols of the PDCCH and PDSCH signals can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), ..., Y(12).

[0247] Specifically, X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), ..., Y(12) can be cross-mapped to layer 0 and layer 1 in the order of arrangement.

[0248] Among them, X(0), X(2), Y(1), Y(3), Y(5), Y(7), Y(9) and Y(11) can be mapped to layer 0 in the order of arrangement, and X(1), Y(0), Y(2), Y(4), Y(6), Y(8), Y(10) and Y(12) can be mapped to layer 1 in the order of arrangement.

[0249] Understandable. Figure 18 The example shown illustrates this by assuming that each layer contains one OFDM symbol.

[0250] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapped signal can be as follows: Figure 19 As shown.

[0251] In this example, some modulation symbols of the PDCCH signal and some modulation symbols of the PDSCH signal can be mapped to layer 0, and the remaining modulation symbols of the PDCCH signal and the remaining modulation symbols of the PDSCH signal can be mapped to layer 1.

[0252] The remaining modulation symbols of the PDCCH signal can be any other modulation symbols in the PDCCH signal besides some of the modulation symbols of the PDCCH signal, and the remaining modulation symbols of the PDSCH signal can be any other modulation symbols in the PDSCH signal besides some of the modulation symbols of the PDSCH signal.

[0253] In this example, the starting position of the modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 0 is different from the starting position of the modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1.

[0254] Optionally, in other embodiments, the starting position of the modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 0 may be the same as the starting position of the modulation symbols of the PDSCH signal mapped to the frequency domain resources of layer 1.

[0255] This example illustrates the mapping of the modulation symbols of the first and second signals to two layers. Optionally, when the modulation symbols of the first and second signals are mapped to more than two layers, the mapping method is the same as... Figure 16 and Figure 17 Similarly, this will not be elaborated upon here.

[0256] In this implementation, the first signal and the second signal can be jointly mapped at the layer based on the second mapping method. This enables spatial separation of the first signal and the second signal. When the first node transmits the first signal and the second signal between the second node, the utilization rate of spatial resources can be improved, which is conducive to reducing data transmission latency and data transmission overhead.

[0257] Optionally, the second mapping method can satisfy the following formula:

[0258]

[0259] in, The modulation symbol representing the first signal. The modulation symbol of the second signal, d (0) (i) represents the modulation symbol to be mapped, i.e., the signal after joint sorting of the first and second signals. This represents the number of mapped symbols of the first codeword of the first signal. This indicates the number of mapped symbols in the first codeword of the second signal. The symbol number represents the first mapped signal, and i represents the symbol index.

[0260] In this implementation, the first node can determine the signal after the first signal and the second signal are jointly sorted based on the formula satisfied by the second mapping method. This facilitates the subsequent joint layer mapping of the first signal and the second signal by the first node, which can improve the utilization of space resources and thus help reduce data transmission latency and data transmission overhead.

[0261] S902, the first node sends a first mapping signal to the second node. Correspondingly, the second node receives the first mapping signal.

[0262] In this method, the first node is the node that sends the first mapping signal; the first node can also be called the sending node.

[0263] In this method, the second node is the node that receives the first mapping signal; the second node can also be called the receiving node.

[0264] Optionally, the second node can be a terminal device, or a device that can be applied to the terminal device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the terminal device. For example, the module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0265] In this method, the first node can also send first information to the second node, the first information indicating a joint layer mapping of the first signal and the second signal.

[0266] In one possible implementation, the first information can be carried in the RRC signaling (or RRC parameters).

[0267] As an example, the first information can be indicated by the first parameter in the RRC signaling. For instance, a value of 1 for the first parameter indicates that the first node performs a joint layer mapping between the first and second signals. A value of 0 for the first parameter indicates that the first node does not perform a joint layer mapping between the first and second signals.

[0268] In this implementation, the first parameter is set to 1, which indicates that before the first node sends downlink signaling and downlink data to the second node via PDCCH and PDSCH, the mapping is based on the joint layer mapping of the first signal and the second signal.

[0269] In another possible implementation, the first information can be carried in the DCI.

[0270] As an example, the first information can be indicated by the second parameter in the DCI. For instance, a value of 1 for the second parameter indicates that the first node performs a joint layer mapping on the first and second signals. A value of 0 for the second parameter indicates that the first node does not perform a joint layer mapping on the first and second signals.

[0271] In this implementation, each time the first node performs a joint layer mapping of the first signal and the second signal, it sends the first information to the second node.

[0272] In this method, the receiving node can determine that the first mapped signal is the signal obtained after performing joint layer mapping on the first signal and the second signal based on the first information. This is beneficial for the receiving node to perform de-layer mapping on the first mapped signal, thereby demodulating the first signal and the second signal.

[0273] In this method, the first node can also send second information to the second node. The second information indicates the mapping method of the first mapping signal. The mapping method of the first mapping signal includes a first mapping method and a second mapping method.

[0274] Optionally, the second information can be carried in the RRC signaling.

[0275] As an example, the second information can be indicated by the third parameter in the RRC signaling. For instance, when the third parameter is 1, it indicates that the mapping method of the first mapped signal is the first mapping method. When the third parameter is 0, it indicates that the mapping method of the first mapped signal is the second mapping method.

[0276] In this method, the second node can determine the mapping method of the first mapping signal based on the second information, and then perform de-mapping based on the mapping method, which helps to avoid inaccurate demodulation signals.

[0277] Optionally, in some embodiments, the first node may not need to send the second information to the second node. In this case, the mapping method of the first mapping signal can be predetermined. For example, the mapping method of the first mapping signal can be pre-configured in both the first and second nodes.

[0278] In this method, before the first node performs joint layer mapping on the first signal and the second signal, it can also receive third information from the second node, which instructs the second node to support joint layer mapping on the first signal and the second signal.

[0279] Optionally, the third information can be carried in the RRC signaling.

[0280] As an example, the third information can be indicated by the fourth parameter in the RRC signaling. For instance, a value of 1 for the fourth parameter indicates that the second node supports joint layer mapping between the first and second signals. A value of 0 for the fourth parameter indicates that the second node does not support joint layer mapping between the first and second signals.

[0281] In this example, when the fourth parameter is 1, the first node performs a joint layer mapping on the first and second signals.

[0282] In this method, the first node will only generate and send the first mapping signal if it determines that the receiving node supports the joint layer mapping of the first and second signals, thus avoiding resource waste when the receiving node cannot demodulate the first mapping signal.

[0283] S903, the second node performs de-mapping on the first mapping signal.

[0284] In this method, when the first node sends second information to the second node, the second node can perform de-mapping of the first mapping signal based on the mapping method of the first mapping signal indicated by the second information.

[0285] In the technical solution of this application, the first signal and the second signal are mapped through a joint layer, which enables spatial separation of the first signal and the second signal. When the first node transmits the first signal and the second signal between the second node, the utilization rate of spatial resources can be improved, thereby helping to reduce data transmission latency and data transmission overhead.

[0286] Figure 20 This is a schematic diagram of the structure of a data processing apparatus provided in one embodiment of this application. Figure 20 As shown, the data processing device 2000 may include a processing module 2001 and a transceiver module 2002.

[0287] As an example, the data processing device 2000 can be used to implement Figure 9 The data processing method of the illustrated embodiment. The processing module 2001 can be used to execute S901, and the transceiver module 2002 can be used to execute S902.

[0288] Optionally, the data processing device 2000 can be applied to the first node. For example, the first node can be a network device, or a device within the network device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the functions of the network device. This module or unit can be a hardware circuit, software, or a combination of hardware circuit and software.

[0289] Optionally, when the data processing device 2000 is a chip or chip system applied in a network device, the transmission / reception can correspond to actions related to signal transmission or reception. This can be understood as the transmission / reception of radio frequency signals in the analog / intermediate frequency / radio frequency domain, or as initiating or controlling transmission / reception operations in the digital domain, or a combination of both. For example, when a network device transmits or receives various signals, the processor in the network device implements the transmission or reception by driving or controlling the radio frequency circuit. Therefore, during signal transmission and reception, the processor is the decision-maker or controller of the transmission and reception operation, while the radio frequency circuit is the specific executor of the transmission and reception. Together with the antenna, they can achieve the transmission and reception operation.

[0290] As another example, the data processing device 2100 can be used to implement Figure 9 The data processing method of the illustrated embodiment. The transceiver module 2002 can be used to execute S902, and the processing module 2001 can be used to execute S903.

[0291] Optionally, the data processing device 2000 can be applied to the second node. For example, the second node can be a terminal device, or a device within the terminal device (e.g., a chip, chip system, or circuit), or a logic module or software capable of implementing all or part of the terminal device's functions. One possible implementation includes modules or units for implementing the methods in the second aspect and any possible implementation of the second aspect. For example, it can include modules or units corresponding to each of the methods / operations / steps / actions described in the second aspect; these modules or units can be hardware circuits, software, or a combination of hardware circuits and software implementation.

[0292] Optionally, when the data processing device 2000 is a chip or chip system applied in a terminal device, the transmission / reception can correspond to actions related to signal transmission or reception. This can be understood as the transmission / reception of radio frequency signals in the analog / intermediate frequency / radio frequency domain, or as initiating or controlling transmission / reception operations in the digital domain, or a combination of both. For example, when the terminal device transmits or receives various signals, the processor in the terminal device implements the transmission or reception by driving or controlling the radio frequency circuit. Therefore, during signal transmission and reception, the processor is the decision-maker or controller of the transmission and reception operation, while the radio frequency circuit is the specific executor of the transmission and reception. Together with the antenna, they can achieve the transmission and reception operation.

[0293] In this embodiment, the processor can be one or more central processing units (CPUs). If the processor is a CPU, it can be a single-core CPU or a multi-core CPU. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a programmable logic device (PLD), a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware groups. A general-purpose processor can be a microprocessor or any conventional processor.

[0294] Radio frequency (RF) circuits may include, but are not limited to, RF chips, RF front-ends, RF power amplifiers (PAs), low noise amplifiers (LNAs), mixers, filters, duplexers, etc. Optionally, RF circuits may also include antennas integrated with the RF circuitry.

[0295] The method steps in the embodiments of this application can be implemented in hardware or by a processor executing software instructions. The software instructions can consist of corresponding software modules, which can be stored in memory or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor, enabling the processor to read information from and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and storage medium can reside in an ASIC. Alternatively, the ASIC can reside in a network device or terminal. Of course, the processor and storage medium can also exist as discrete components in the network device or terminal.

[0296] In this application, the memory may include: cache, random access memory (RAM), flash memory, read-only memory (ROM), synchronous dynamic random access memory (SDRAM), programmable read-only memory, erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory, registers, hard disk drive (HDD) or solid-state drive (SSD), portable hard disk drive, or compact disc read-only memory (CD-ROM), etc. Memory is any other medium capable of carrying or storing desired program code having an instruction or data structure form and accessible by a computer, but is not limited thereto. The memory in the embodiments of this application may also be a circuit or any other device capable of implementing storage functions for storing computer programs or instructions, and / or data.

[0297] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of this application are performed entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable device. The computer program or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions can be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; it can also be an optical medium, such as a digital video optical disc; or it can be a semiconductor medium, such as a solid-state drive.

[0298] This application also provides a computer-readable storage medium storing a computer program or instructions that are executed by a computer (e.g., a processor) to implement some or all of the steps of any method executed by any device in this application.

[0299] This application also provides a computer program product including a computer program or a set of instructions, which, when run on a computer, implements some or all of the steps of any method executed by any device in this application embodiment.

[0300] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions between different embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0301] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

Claims

1. A data processing method, characterized by, The method comprises: receiving a first mapped signal, the first mapped signal being a signal obtained by performing joint layer mapping on a first signal and a second signal, the first signal being used for transmitting control information, the second signal being used for transmitting service data, the joint layer mapping being layer mapping performed on a joint signal of the first signal and the second signal; performing de-layer mapping on the first mapped signal.

2. The method of claim 1, wherein, The first mapped signal is generated based on a first mapping manner; The first mapping manner comprises: modulated symbols of the first signal and part of modulated symbols of the second signal being mapped to a first layer, remaining modulated symbols of the second signal being mapped to a second layer, a starting position of the part of modulated symbols of the second signal mapped to the first layer being different from a starting position of the remaining modulated symbols of the second signal mapped to the second layer.

3. The method of claim 2, wherein, The first mapping manner satisfies the following formula: wherein, denotes a modulation symbol of the first signal, denotes a modulation symbol of the second signal, (0) (i) denotes a modulation symbol to be mapped, denotes a number of mapped symbols of a first codeword of the first signal, denotes a number of mapped symbols of a first codeword of the second signal, denotes a number of symbols of the first mapped signal, and layer denotes a number of layers of mapping, denotes a number of symbols of a corresponding mapped signal per layer, layer1 denotes a number of layers of mapping of the modulation symbols of the first signal, j denotes an index of a mapping layer, and 0≤j<layer, i denotes an index of a symbol, and x (j) (i) denotes that the i-th modulation symbol of the first signal is mapped to the j-th layer of the mapped signal, denotes a ceiling function.

4. The method of claim 1, wherein, The first mapped signal is generated based on a second mapping manner; The second mapping manner comprises: modulated symbols of a joint signal of the first signal and the second signal being mapped to multiple layers.

5. The method of claim 4, wherein, The second mapping manner satisfies the following formula: wherein denotes a modulation symbol of the first signal, denotes a modulation symbol of the second signal, d (0) (i) denotes a modulation symbol to be mapped, denotes the number of mapped symbols of the first codeword of the first signal, denotes the number of mapped symbols of the first codeword of the second signal, denotes the number of symbols of the first mapped signal, i denotes the index of the symbol.

6. The method according to any one of claims 1 to 5, characterized in that, The method further comprises: receiving first information, the first information indicating that joint layer mapping is performed on the first signal and the second signal.

7. The method according to any one of claims 1 to 6, characterized in that, The method further comprises: receiving second information, the second information indicating a mapping manner of the first mapped signal, the mapping manner comprising a first mapping manner and a second mapping manner; The de-layer mapping on the first mapped signal comprises: performing de-layer mapping on the first mapped signal based on the mapping manner of the first mapped signal.

8. The method according to any one of claims 1 to 7, characterized in that, The method further comprises: sending third information, the third information indicating that a receiving node supports joint layer mapping on the first signal and the second signal.

9. The method according to any one of claims 1 to 8, characterized in that, The first signal is a signal carried by a physical downlink control channel (PDCCH), and the second signal is a signal carried by a physical downlink shared channel (PDSCH).

10. A data processing method, characterized by, The method comprises: determining a first mapped signal, the first mapped signal being a signal obtained by performing joint layer mapping on a first signal and a second signal, the first signal being used for transmitting control information, the second signal being used for transmitting service data, the joint layer mapping being layer mapping performed on a joint signal of the first signal and the second signal; sending the first mapped signal.

11. The method of claim 10, wherein, The first mapped signal is generated based on a first mapping manner; The first mapping manner comprises: modulated symbols of the first signal and part of modulated symbols of the second signal being mapped to a first layer, remaining modulated symbols of the second signal being mapped to a second layer, a starting position of the part of modulated symbols of the second signal mapped to the first layer being different from a starting position of the remaining modulated symbols of the second signal mapped to the second layer.

12. The method of claim 11, wherein, The first mapping manner satisfies the following formula: wherein denotes a modulation symbol of the first signal, denotes a modulation symbol of the second signal, d (0) (i) denotes a modulation symbol to be mapped, denotes a number of mapped symbols of a first codeword of the first signal, denotes a number of mapped symbols of a first codeword of the second signal, denotes a number of symbols of the first mapped signal, layer denotes a number of layers of mapping, denotes a number of symbols of the corresponding mapped signal per layer, layer1 denotes a number of layers of mapping of the modulation symbols of the first signal, j denotes an index of the mapping layer and 0≤j<layer, i denotes an index of the symbol, x (j) (i) denotes that the i-th modulation symbol of the first signal is mapped to the j-th layer of the mapped signal, denotes a ceiling function.

13. The method of claim 10, wherein, The first mapped signal is generated based on a second mapping manner; The second mapping manner comprises: modulated symbols of a joint signal of the first signal and the second signal being mapped to multiple layers.

14. The method of claim 13, wherein, The second mapping manner satisfies the following formula: wherein denotes a modulation symbol of the first signal, denotes a modulation symbol of the second signal, (0) (i) denotes a modulation symbol to be mapped, denotes the number of mapped symbols of the first codeword of the first signal, denotes the number of mapped symbols of the first codeword of the second signal, denotes the number of symbols of the first mapped signal, i denotes the index of the symbol.

15. The method according to any one of claims 10 to 14, characterized in that, The first signal is arranged in the joint signal in an order before the second signal.

16. The method according to any one of claims 10 to 15, characterized in that, The method further comprises: sending first information indicating joint layer mapping of the first signal and the second signal.

17. The method according to any one of claims 10 to 16, characterized in that, The method further comprises: sending second information indicating a mapping manner of the first mapped signal, the mapping manner comprising a first mapping manner and a second mapping manner.

18. The method according to any one of claims 10 to 17, characterized in that, The method further comprises: receiving third information indicating that the receiving node supports joint layer mapping of the first signal and the second signal.

19. The method according to any one of claims 10 to 18, characterized in that, The first signal is a signal carried by a physical downlink control channel (PDCCH), and the second signal is a signal carried by a physical downlink shared channel (PDSCH).

20. A data processing apparatus, characterized in that, comprising functional modules for implementing the method of any one of claims 1 to 9, or comprising functional modules for implementing the method of any one of claims 10 to 19.

21. A data processing apparatus, characterized in that, comprising a processor for causing the apparatus to perform the method of any one of claims 1 to 9, or for causing the apparatus to perform the method of any one of claims 10 to 19, by executing computer programs or instructions stored in a memory and / or by a logic circuit.

22. The apparatus of claim 21, wherein, The data processing apparatus further comprises a memory for storing the computer programs or instructions.

23. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer executable instructions for causing the method of any one of claims 1 to 9 to be implemented, or for causing the method of any one of claims 10 to 19 to be implemented, when the computer executable instructions are run on a data processing apparatus.

24. A computer program product, characterised in that, The computer program product comprises instructions for implementing the method of any one of claims 1 to 19.

25. A communication system comprising a transmitting node and a receiving node, the receiving node being configured to implement the method of any one of claims 1 to 9, and the transmitting node being configured to implement the method of any one of claims 10 to 19.

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