Data processing method and related apparatus

Abstract

Provided in the present application are a data processing method and a related apparatus, which can be used in the technical field of communications. In the technical solution provided in the present application, the method comprises: a second node receiving a first mapping signal sent by a first node, wherein the first mapping signal is obtained by means of a first signal and a second signal being subjected to joint layer mapping, the first signal is used for transmitting control information, the second signal is used for transmitting service data, and the joint layer mapping is layer mapping performed on a joint signal of the first signal and the second signal; and performing layer demapping on the first mapping signal. In the method, when a first signal and a second signal are transmitted between a first node and a second node, the space resource utilization rate can be improved, thereby facilitating a reduction in data transmission delay, and facilitating a reduction in data transmission overheads.

Description

Data processing method and related apparatus

[0001] The present application claims priority to the Chinese patent application No. 202410874350.4, filed on June 28, 2024, and entitled "Data processing method and related apparatus", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a data processing method and related apparatus. BACKGROUND

[0003] In the existing communication system, a communication device needs to perform layer mapping on a signal before transmitting the signal. For example, before a network device transmits downlink signaling and downlink data to a terminal device through a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) respectively, the network device can map the modulation symbols of the signals carried by the PDCCH and the PDSCH to one or more layers of orthogonal frequency division multiplexing (OFDM) symbols or resource elements (REs).

[0004] However, it is found in use that when the network device transmits downlink signaling and downlink data through the PDCCH and the PDSCH, the data transmission delay is large. SUMMARY

[0005] The present application provides a data processing method and related apparatus, which can improve the spatial resource utilization rate when a network device transmits downlink signaling and downlink data through a PDCCH and a PDSCH, thereby facilitating the reduction of data transmission delay.

[0006] In a first aspect, the present application provides a data processing method, which is applied in a second node. The method comprises: receiving a first mapping signal, the first mapping 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; and performing de-layer mapping on the first mapping signal.

[0007] In the method, the first mapping signal received by the second node can be transmitted by a first node.

[0008] The first node can be a network device, or a device (for example, a chip, a chip system, or a circuit) that can be applied to the network device, or a logic module or software that can realize all or part of the function of the network device. For example, the module or unit can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0009] Optionally, the data processing method can be applied to a communication system as shown in FIG. 1. As an example, the first node can be a network device as shown in FIG. 1.

[0010] Optionally, the data processing method can also be applied to an O-RAN system. As an example, the first node can be a CU in an access network device as shown in FIG. 3, or a CU-CP or a CU-UP in an access network device as shown in FIG. 4. As another example, the first node can be a DU or a RU in an access network device as shown in FIG. 3.

[0011] In the method, the first node is a node that transmits the first mapping signal, and the first node can also be referred to as a transmitting node.

[0012] The second node can be a terminal device, or a device (for example, a chip, a chip system, or a circuit) that can be applied to the terminal device, or a logic module or software that can realize all or part of the function of the terminal device. For example, the module or unit can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0013] Optionally, the data processing method can be applied to a communication system as shown in FIG. 1. As an example, the second node can be a terminal device as shown in FIG. 1.

[0014] Optionally, the data processing method can also be applied to an O-RAN system. As an example, the second node can be a terminal device as shown in FIG. 3.

[0015] In the method, the second node is a node that receives the first mapping signal, and the second node can also be referred to as a receiving node.

[0016] In this application, the joint signal of the first signal and the second signal can be a signal obtained by jointly ranking the first signal and the second signal.

[0017] In the method, the first signal and the second signal are subjected to joint layer mapping, so that the first signal and the second signal can be spatially separated, and when the first signal and the second signal are transmitted between the first node and the second node, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and reduction of data transmission overhead.

[0018] In some possible implementation manners, the first mapping signal is generated based on a first mapping manner.

[0019] The first mapping manner comprises: modulated symbols of the first signal and part of modulated symbols of the second signal are mapped to a first layer, remaining modulated symbols of the second signal are mapped to a second layer, and a starting position of the part of modulated symbols of the second signal mapped to the first layer is different from a starting position of the remaining modulated symbols of the second signal mapped to the second layer in a frequency domain resource.

[0020] In the first mapping manner, the first layer can comprise one or more layers, and the second layer can also comprise one or more layers.

[0021] Optionally, when the first layer comprises a plurality of layers, the part of modulated symbols of the second signal are mapped to a last layer of the first layer.

[0022] As an example, the mapping position of the first mapping signal can be as shown in FIG. 10 or FIG. 11.

[0023] As another example, the mapping position of the first mapping signal can be as shown in FIG. 12 or FIG. 13.

[0024] As yet another example, the mapping position of the first mapping signal can be as shown in FIG. 14 or FIG. 15.

[0025] Optionally, in some embodiments, the modulated symbols mapped to the first layer can also not comprise modulated symbols of the second signal. That is, the modulated symbols of the first signal can be mapped to the first layer, and the modulated symbols of the second signal can be mapped to the second layer.

[0026] As an example, the mapping position of the first mapping signal can also be as shown in FIG. 16 or FIG. 17.

[0027] In this implementation manner, the first signal and the second signal can be jointly layer-mapped based on the first mapping manner, so that the first signal and the second signal can be spatially separated, and when the first signal and the second signal are transmitted between the first node and the second node, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and data transmission overhead.

[0028] In some possible implementation manners, the first mapping manner satisfies the following formula:

[0029] wherein, denotes modulated symbols of the first signal, denotes modulated symbols of the second signal, d (0) (i) denotes modulated symbols to be mapped, a number of mapped symbols of a first codeword of the first signal, a number of mapped symbols of a first codeword of the second signal, a number of symbols of the first mapped signal, and layer represents a number of layers of mapping, a number of symbols of the first mapped signal, and layer represents a number of layers of mapping, (j) (i) represents that the i th modulated symbol of the first signal is mapped to the j th layer of the mapped signal, represents a ceiling function.

[0030] In this implementation, since the first layer in the first mapping manner can contain one or more, and the second layer can also contain 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 manner, so as to facilitate the first node to perform joint layer mapping on the first signal and the second signal subsequently, thereby facilitating reduction of data transmission delay and data transmission overhead.

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

[0032] The second mapping manner comprises: modulated symbols of a joint signal of the first signal and the second signal are mapped to a plurality of layers.

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

[0034] In this implementation, the first signal and the second signal can be jointly mapped based on the second mapping manner, so that the first signal and the second signal can be spatially separated, and when the first node and the second node subsequently transmit the first signal and the second signal, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and reduction of data transmission overhead.

[0035] In some possible implementation manners, the second mapping manner satisfies the following formula:

[0036] wherein, represents modulated symbols of the first signal, represents modulated symbols of the second signal, d (0) (i) represents a modulated symbol to be mapped, a number of mapped symbols of a first codeword of the first signal, a number of mapped symbols of a first codeword of the second signal, wherein i represents an index of the symbol, and wherein the first mapping signal is a signal obtained by performing joint layer mapping on the first signal and the second signal.

[0037] In this implementation, the first node can determine the signal after the first signal and the second signal are jointly sorted based on a formula satisfied by the second mapping manner, so as to facilitate the first node to perform joint layer mapping on the first signal and the second signal, thereby facilitating reduction of data transmission delay and data transmission overhead.

[0038] In some possible implementation manners, the first signal is arranged in the joint signal in front of the second signal.

[0039] In the first mapping manner, the first signal herein can be a more important signal and has a higher requirement for reliability. The second signal can be a less important signal and has a lower requirement for reliability.

[0040] Generally, the lower the index of the mapping layer, the better the signal transmission quality. The first signal is arranged in front of the second signal, so that the first node can map the modulation symbol of the first signal to a mapping layer with better transmission quality, thereby facilitating guarantee of the transmission quality of the first signal.

[0041] In the second mapping manner, the first signal can be arranged in front of the second signal, and for each mapping layer, the mapping position of the modulation symbol of the first signal can be in front of the mapping position of the modulation symbol of the second signal, so that after receiving the first mapping signal, the node receiving the first mapping signal (or a receiving node) can better distinguish the first signal from the second signal.

[0042] In some possible implementation manners, the method further includes: receiving first information, wherein the first information indicates joint layer mapping on the first signal and the second signal.

[0043] Optionally, the first information can be carried in radio resource control (RRC) signaling or downlink control information (DCI).

[0044] In this implementation, the receiving node can determine, based on the first information, that the first mapping signal is a signal obtained by performing joint layer mapping on the first signal and the second signal, thereby facilitating the receiving node to perform de-layer mapping on the first mapping signal, so as to demodulate the first signal and the second signal.

[0045] In some possible implementation manners, the method further includes: receiving second information, wherein the second information indicates a mapping manner of the first mapping signal.

[0046] The de-layer mapping on the first mapping signal includes: performing de-layer mapping on the first mapping signal based on the mapping manner of the first mapping signal.

[0047] Optionally, the second information can be carried in RRC signaling.

[0048] In this implementation, the second node can determine the mapping manner of the first mapping signal based on the second information, and then perform de-layer mapping based on the mapping manner, which is beneficial to avoid the situation that the demodulated signal is inaccurate.

[0049] In some possible implementation, 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.

[0050] In other words, the third information indicates that the second node supports joint layer mapping of the first signal and the second signal.

[0051] Optionally, the third information can be carried in RRC signaling.

[0052] In this implementation, the first node generates and sends the first mapping signal only when it is determined that the second node supports joint layer mapping of the first signal and the second signal, which avoids the situation of resource waste when the second node cannot demodulate the first mapping signal.

[0053] In some possible implementation, 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).

[0054] In this method, the signal carried by the PDCCH and the signal carried by the PDSCH are subjected to joint layer mapping, which can realize space division of the signal carried by the PDCCH and the signal carried by the PDSCH. When the first node and the second node subsequently transmit the signal carried by the PDCCH and the signal carried by the PDSCH, the spatial resource utilization rate can be improved, thereby being beneficial to reducing the data transmission delay and reducing the data transmission overhead.

[0055] In a second aspect, the present application provides a data processing method, which is applied to a first node. The method includes: determining a first mapping signal, the first mapping signal being obtained by joint layer mapping of 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, and the joint layer mapping being layer mapping of a joint signal of the first signal and the second signal; and sending the first mapping signal.

[0056] In the method, the first node can be a network device, or an apparatus (for example, a chip, a chip system, or a circuit) that can be applied to the network device, or can be a logical module or software capable of realizing all or part of the network device functions. For example, the module or unit can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0057] Optionally, the data processing method can be applied to a communication system as shown in FIG. 1. As an example, the first node can be a network device as shown in FIG. 1.

[0058] Optionally, the data processing method can also be applied to an O-RAN system. As an example, the first node can be a CU in an access network device as shown in FIG. 3, or a CU-CP or a CU-UP in an access network device as shown in FIG. 4. As another example, the first node can be a DU or a RU in an access network device as shown in FIG. 3.

[0059] In the method, the first node is a node that transmits the first mapping signal, and the first node can also be referred to as a transmitting node.

[0060] In some possible implementation manners, the first mapping signal is generated based on a first mapping manner.

[0061] The first mapping manner includes that modulation symbols of the first signal and part of modulation symbols of the second signal are mapped to a first layer, and remaining modulation symbols in the second signal are mapped to a second layer, and the part of modulation symbols of the second signal mapped to the first layer are mapped to a starting position of frequency domain resources of the first layer, which is different from a starting position of frequency domain resources of the second layer to which the remaining modulation symbols of the second signal are mapped.

[0062] In some possible implementation manners, the first mapping manner satisfies the following formula:

[0063] wherein, indicates the modulation symbols of the first signal, indicates the modulation symbols of the second signal, d (0) (i) indicates the modulation symbols to be mapped, indicates the number of mapping symbols of a first codeword of the first signal, indicates the number of mapping symbols of a first codeword of the second signal, indicates the number of symbols of the first mapping signal, layer indicates the number of layers of mapping, indicates the number of symbols of the mapping signal corresponding to each layer, layer1 indicates the number of layers to which the modulation symbols of the first signal are mapped, j indicates the index of the mapping layer and 0≤j<layer, i indicates the index of the symbol, x(j) (i) represents the modulation symbol of the i-th first signal mapped to the j-th layer, represents the upward rounding.

[0064] In some possible implementation manners, the first mapping signal is generated based on a second mapping manner.

[0065] The second mapping manner comprises: mapping modulation symbols of a joint signal of the first signal and the second signal to multiple layers.

[0066] In some possible implementation manners, the second mapping manner satisfies the following formula:

[0067] 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 index of the symbol.

[0068] In some possible implementation manners, the first signal is arranged in the joint signal in front of the second signal.

[0069] In some possible implementation manners, the method further comprises: sending first information, the first information indicating joint layer mapping of the first signal and the second signal.

[0070] In some possible implementation manners, the method further comprises: sending second information, the second information indicating a mapping manner of the first mapping signal, the mapping manner comprising a first mapping manner and a second mapping manner.

[0071] In some possible implementation manners, the method further comprises: receiving third information, the third information indicating that a receiving node supports joint layer mapping of the first signal and the second signal.

[0072] In some possible implementation manners, 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).

[0073] In a third aspect, the present application provides a data processing apparatus, which can be used in the second node of the first aspect. The data processing apparatus can be a terminal device, or an apparatus (e.g., a chip, a chip system, or a circuit) that can be applied in a terminal device, or a logic module or software that can realize all or part of the functions of a terminal device. In a possible implementation, modules or units for implementing the method in the first aspect and any possible implementation of the first aspect are included. For example, modules or units corresponding to the method / operation / step / action described in the first aspect can be included, which can be hardware circuits, software, or a combination of hardware circuits and software. Optionally, each module or unit can realize the corresponding function by executing a computer program.

[0074] In a fourth aspect, the present application provides a data processing apparatus, which can be used in the first node of the second aspect. The data processing apparatus can be a network device, or an apparatus (e.g., a chip, a chip system, or a circuit) in a network device, or a logic module or software that can realize all or part of the functions of a network device. In a possible implementation, modules or units for implementing the method in the second aspect and any possible implementation of the second aspect are included. For example, modules or units corresponding to the method / operation / step / action described in the second aspect can be included, which can be hardware circuits, software, or a combination of hardware circuits and software. Optionally, each module or unit can realize the corresponding function by executing a computer program.

[0075] In a fifth aspect, the present application provides a data processing apparatus, which includes a processor for executing a computer program (or computer executable instructions) stored in a memory and / or a logic circuit to enable the apparatus to perform the method in any one of the first aspect to the second aspect and any possible implementation thereof.

[0076] In a possible implementation, the apparatus further includes a memory.

[0077] In a possible implementation, the processor and the memory are integrated together.

[0078] In another possible implementation, the memory is located outside the data processing apparatus.

[0079] In a possible implementation, the data processing apparatus further includes a communication interface for the data processing apparatus to communicate with other devices, such as transmitting or receiving data and / or signals. For example, the communication interface can be a transceiver, a circuit, a bus, a module, or other types of communication interfaces.

[0080] In a sixth aspect, the present application provides a computer readable storage medium storing computer programs or instructions for a data processing apparatus to execute, which when run on the data processing apparatus, cause the method of any one of the first aspect to the second aspect and any possible implementation thereof to be implemented.

[0081] In a seventh aspect, the present application provides a computer program product containing instructions, which when run on a data processing apparatus, cause the method of any one of the first aspect to the second aspect and any possible implementation thereof to be implemented.

[0082] In an eighth aspect, the present application provides a communication system, which comprises a sending node and a receiving node. The receiving node is configured to implement the method of the first aspect and any possible implementation thereof, and the sending node is configured to implement the method of the first aspect and any possible implementation thereof.

[0083] It can be understood that the effects of the second aspect to the eighth aspect can refer to the description in the first aspect, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0084] FIG. 1 is a schematic diagram of a communication system to which embodiments of the present application are applicable;

[0085] FIG. 2 is a schematic diagram of a communication method between a network device and a terminal device according to an embodiment of the present application;

[0086] FIG. 3 is a schematic diagram of an open radio access network (O-RAN) system according to an embodiment of the present application;

[0087] FIG. 4 is a schematic diagram of a network element function division and a protocol layer structure of an access network device in an O-RAN system according to an embodiment of the present application;

[0088] FIG. 5 is a schematic diagram of a layer mapping;

[0089] FIG. 6 is a schematic diagram of a mapping method of a PDCCH signal and a PDSCH signal;

[0090] FIG. 7 is a schematic diagram of another mapping method of a PDCCH signal and a PDSCH signal;

[0091] FIG. 8 is a schematic diagram of mapping positions of modulation symbols of a PDCCH signal and modulation symbols of a PDSCH signal to different layers;

[0092] FIG. 9 is a schematic diagram of a data processing method according to an embodiment of the present application;

[0093] FIG. 10 is a schematic diagram of mapping positions of first mapping signals according to an embodiment of the present application;

[0094] FIG. 11 is a schematic diagram of mapping positions of first mapping signals according to another embodiment of the present application;

[0095] FIG. 12 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0096] FIG. 13 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0097] FIG. 14 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0098] FIG. 15 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0099] FIG. 16 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0100] FIG. 17 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0101] FIG. 18 is a schematic diagram of mapping positions of first mapping signals according to yet another embodiment of the present application;

[0102] FIG. 19 is a schematic diagram of mapping positions of first mapping signals according to another embodiment of the present application;

[0103] FIG. 20 is a schematic diagram of a structure of a data processing apparatus according to an embodiment of the present application. DETAILED DESCRIPTION

[0104] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0105] In order to clearly describe the technical solutions in the embodiments of the present application, in the embodiments of the present application, the same items or similar items with basically the same functions and effects are distinguished by using “first”, “second” and the like. For example, the first information and the second information are only used to distinguish different information, and the order is not limited. Those skilled in the art can understand that the “first”, “second” and the like do not limit the quantity and execution order, and the “first”, “second” and the like do not necessarily mean different.

[0106] In the embodiments of this application, "at least one" means one or more, and "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B, which can represent the following three cases: A exists alone, A and B exist together, and B exists alone, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects before and after it. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple 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. Where a, b, and c can be single or multiple.

[0107] The technical solutions of the present application can be applied to a fifth generation (5th generation, 5G) communication system, such as a 5G new radio (new radio, NR) communication system, or to various communication systems evolved after 5G, such as future communication network systems. The method provided in the embodiments of the present application can also be applied to a wireless fidelity (wireless WiFi) system, a long range Internet of Things (long range, LoRa) system, or a vehicle Internet of Things system. The method provided in the embodiments of the present application can also be applied to a satellite communication system. The satellite communication system can be integrated with the above-mentioned communication systems, which is not limited in the present application.

[0108] In the following, the embodiments of the present application are described in detail in combination with the drawings.

[0109] In order to facilitate understanding of the embodiments of the present application, first, the communication system applicable to the embodiments of the present application is described in combination with FIG. 1. As shown in FIG. 1, the communication system 100 can include at least one network device (such as 110a and 110b in FIG. 1), and can also include at least one terminal device (such as 120a to 120j in FIG. 1).

[0110] The network device can be a device deployed in a wireless access network to provide wireless communication functions for a terminal device. As an example, the network device can include, but is not limited to, a next-generation base station (gNodeB, gNB) in a 5G communication system, a base station in a future communication network system, or an access node in a WiFi system, and the like, an evolved node B (eNB) in a long term evolution (LTE) system, a radio network controller (RNC), a home base station (for example, a home evolved NodeB, or a home Node B, HNB), a baseband unit (BBU), a transmission reception point (TRP), a transmitting point (TP), and the like.

[0111] The network device can serve a cell through which a user equipment communicates with the base station using transmission resources. The cell can be a cell corresponding to the base station, and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, and the like.

[0112] The network device can also be a device that plays a base station function in device to device (D2D) communication, vehicle networking communication, unmanned aerial vehicle communication, and machine communication. Optionally, the wireless access network device can be a satellite, a macro base station, a micro base station or an indoor station, a relay node or a donor node, a device providing wireless communication services for a user equipment, a wireless controller in a cloud radio access network (CRAN) scenario, a server, a relay station, a vehicle or a vehicle-mounted device, a wearable device, and a network device in a future evolution network, and the like. For example, the wireless access network device in vehicle to everything (V2X) technology can be a road side unit (RSU).

[0113] In the embodiments of the present application, the network device can also be understood as a general term of all devices (including stations) on the network side. For example, a plurality of stations can be collectively referred to as a network device. A station refers to a transmission node located at a specific physical location. In other words, the network device conceptually includes the station.

[0114] In the embodiments of the present application, the form of the network device is not limited, and the device for implementing the function of the network device can be the network device; or can be a device capable of supporting the network device to implement the function, such as a chip system. The device can be installed in the network device or used in matching with the network device.

[0115] The terminal device can also be referred to as a terminal, a user equipment (UE), a mobile station (MS), a mobile terminal (MT), etc., or a device used to provide voice or data connectivity to a user, and can also be an Internet of Things device. For example, the terminal device includes a handheld device having wireless connection function, a vehicle-mounted device, etc. At present, the terminal device can be a mobile phone, a tablet computer, a notebook computer, a palm computer, a subscriber unit, a cellular phone, a smart phone, a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem, a handset, a laptop computer, a machine type communication (MTC) terminal mobile Internet device (MID), a wearable device (for example, a smart watch, a smart bracelet, a pedometer, smart glasses, etc.), a vehicle-mounted device (for example, a car, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, etc.), a satellite terminal, a virtual reality (VR) device, an augmented reality (AR) device, a smart point of sale (POS) machine, a customer-premises equipment (CPE), a light terminal device, a reduced capability UE (REDCAP UE), a wireless terminal in industrial control, a smart home device (for example, a refrigerator, a television, an air conditioner, an electricity meter, etc.), a smart robot, a mechanical arm, a workshop device, a wireless terminal in unmanned driving, a wireless terminal in remote medical treatment, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, or a wireless terminal in a smart home, a flight device (for example, a smart robot, a hot air balloon, a drone, an airplane), etc. The terminal device can also be a vehicle device, for example, a whole vehicle device, a vehicle-mounted module, a vehicle-mounted chip, an on board unit (OBU), or a telematics box (T-BOX), etc. The terminal device can also be other devices with terminal functions, for example, the terminal device can also be a device with terminal functions in D2D communication.

[0116] In the embodiments of the present application, the apparatus for implementing the function of the terminal device can be a terminal, or an apparatus capable of supporting the terminal device to implement the function, for example, a chip system, or a communication module, or a modem, etc., which can be installed in the terminal device. In the embodiments of the present application, the chip system can be composed of a chip, or can include the chip and other discrete devices. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.

[0117] In the present application, the number of network devices and terminal devices can not be 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.

[0118] In the present application, the network device and the terminal device can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on the aircraft, balloon and satellite in the air. The embodiments of the present application do not limit the application scenarios of the wireless access network device and the terminal device.

[0119] In the communication system, the communication between the network device and the terminal device can also be represented in another form. As shown in FIG. 2, 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 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 the transmission control information through the antenna 1033, and the transmitter 1031 can be used to send the transmission feedback information to the network device through the antenna 1033. The transmitter 2031 can be used to send the transmission control information to the terminal device through the antenna 2033, and the receiver 2032 can be used to receive the transmission feedback information sent by the terminal device through the antenna 2033.

[0120] Optionally, the network device in the present application can also be replaced by a chip in the network device. The terminal device in the present application can be replaced by a chip in the terminal device. In other words, the network element structure diagram shown in FIG. 2 can also represent a chip structure diagram applicable to the present application. As shown in FIG. 2, the chip of the terminal device includes a processor 101, a memory 102, and a transceiver 103, and the transceiver 103 includes a transmitter 1031, a receiver 1032, and an antenna 1033. The chip of the network device includes a processor 201, a memory 202, and a transceiver 203, and the transceiver 203 includes a transmitter 2031, a receiver 2032, and an antenna 2033. The receiver 1032 can be configured to receive the transmission control information through the antenna 1033, and the transmitter 1031 can be configured to send the transmission feedback information to the network device through the antenna 1033. The transmitter 2031 can be configured to send the transmission control information to the terminal device through the antenna 2033, and the receiver 2032 can be configured to receive the transmission feedback information sent by the terminal device through the antenna 2033.

[0121] Optionally, the embodiments of the present application can also be applicable to an open radio access network (O-RAN) system as shown in FIG. 3. In this system, the network device is also called a radio access network (RAN), which can communicate with a core network (CN) device through a backhaul link and communicate with a terminal device through an air interface.

[0122] Specifically, it can be that a baseband unit (BBU) in the access network device communicates with the core network through the backhaul link, and a radio unit (RU) in the access network device communicates with at least one terminal device through the air interface. The BBU communicates with at least one RU through a fronthaul link, and the BBU and the RU can be co-located or not.

[0123] The BBU includes at least one control unit (CU) and at least one distributed unit (DU), which can communicate through at least one midhaul link.

[0124] Optionally, in the O-RAN system, the network element function division and protocol layer structure diagram of the access network device can be as shown in FIG. 4.

[0125] In some examples, the CU is a logical node that hosts radio resource control (RRC) layer, service data adaptation protocol (SDAP) layer, packet data convergence protocol (PDCP) layer, and other control functions. The CU is connected to network nodes such as core network through some interfaces, which can be E2 interface or other interfaces. Optionally, the CU can have part of the functions of the core network. The CU (e.g., PDCP layer and higher layers) is connected to the DU (e.g., RLC layer and lower layers) through some interfaces, which can be F1 interface or other interfaces. In some examples, these interfaces (e.g., F1 interface) can provide control plane (C-Plane) and user plane (U-Plane) functions (e.g., interface management, system information management, UE context management, RRC message transfer, etc.). F1AP is an application protocol for F1 interface, which defines the signaling procedures for F1 in some examples. The F1 interface supports control plane F1-C and user plane F1-U.

[0126] In some examples, the CU can be split into a control plane part (control unit-control Plane, CU-CP) and a user plane part (control unit-user plane, CU-UP), wherein the CU-CP is a logical node carrying the RRC layer and the control plane part of PDCP (PDCP-C) layer, used to implement the control plane function of the CU. The CU-CP can interact with the network element in the core network for implementing the control plane function. The network element in the core network for implementing the control plane function can be an access and mobility function network element, such as an access and mobility management function (AMF) in a 5G system, used to be responsible for the mobility management in the mobile network, such as the location update of the terminal device, the registration network of the terminal device, the handover of the terminal device, etc. The CU-UP is a logical node carrying the SDAP layer and the user plane part of PDCP (PDCP-U) layer, used to implement the user plane function of the CU. The CU-UP can interact with the network element in the core network for implementing the user plane function. The network element in the core network for implementing the user plane function, for example, a user plane function (UPF) in a 5G system, is used to be responsible for the forwarding and receiving of data in the terminal device. The above configuration of the CU and the DU is only an example, and the CU and the DU can also be configured to have functions according to needs. For example, the CU or the DU can be configured to have more functions of protocol layers, or the CU or the DU can be configured to have partial processing functions of protocol layers. For example, part of the functions of the RLC layer and the functions of the protocol layers above the RLC layer are arranged in the CU, and the remaining functions of the RLC layer and the functions of the protocol layers below the RLC layer are arranged in the DU. For another example, the functions of the CU or the DU can be divided according to the service type or other system requirements, for example, according to the delay. The functions that need to meet the delay requirement of the processing time are arranged in the DU, and the functions that do not need to meet the delay requirement are arranged in the CU.

[0127] In some examples, a DU is a logical node that hosts 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 is connected with the RUs through some interfaces, which can be fronthaul interfaces. In some examples, the Higher PHY layer includes parts of PHY layer processing, such as forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.

[0128] In some examples, an RU is a logical node that hosts lower physical layer (Lower PHY) and radio frequency (RF) processing. In some examples, an RU can be a 3GPP transmission reception point (TRP) or a remote radio head (RRH) or other similar functional entity. In some examples, the Lower PHY includes parts of PHY processing, such as fast fourier transform (FFT), inverse fast fourier transformation (IFFT), digital beamforming and filtering, etc. An RU communicates with one or more UEs through wireless links.

[0129] The DU and the RU can be co-located or not co-located. The DU and the RU exchange control plane information and user plane information through a lower-layer split-CUS-Plane (LLS-CUS) interface via a fronthaul link. The LLS-CUS can include a LLS-C interface and a LLS-U interface that provide 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 the RU. The DU and the RU exchange management information through a LLS-M interface of the fronthaul link, and the management plane (M-Plane) refers to non-real-time management operations between the DU and the RU.

[0130] The DU and the RU can cooperate to jointly implement the functions of the PHY layer. One DU can be connected to one or more RUs. The functions of the DU and the RU can be configured in various ways according to design. For example, the DU is configured to implement baseband functions, and the RU is configured to implement radio frequency functions. For another example, the DU is configured to implement high-layer functions in the PHY layer, and the RU is configured to implement low-layer functions in the PHY layer or implement the low-layer functions and radio frequency functions. The high-layer functions in the PHY layer can include a part of the functions of the PHY layer that are closer to the MAC layer, and the low-layer functions in the PHY layer can include another part of the functions of the PHY layer that are closer to the radio frequency side.

[0131] The CU (or CU-CP and CU-UP), DU or RU can also have different names in different systems, but those skilled in the art can understand their meanings. For example, in an ORAN system, the CU can also be referred to as an O-CU (open CU), the DU can also be referred to as an O-DU, the CU-CP can also be referred to as an O-CU-CP, the CU-UP can also be referred to as an O-CU-UP, and the RU can also be referred to as an O-RU. For the convenience of description, the CU, CU-CP, CU-UP, DU and RU are taken as examples for description in this application.

[0132] In the existing communication system, the communication device needs to perform layer mapping on the signal before transmitting the signal. The layer mapping is a process of mapping a code word to different layers. The code word is an independent coded data stream from a transport channel to a physical layer, which is formed by a transport block (TB) through channel coding, interleaving, scrambling, modulation and other processes.

[0133] Here, the layer is a transmission layer, which can be understood as a different spatial channel that can be distinguished between communication devices. One transmission layer can correspond to one data stream that can be transmitted.

[0134] In the embodiment of the application, the number of layers mapped can be a data stream that can be independently and in parallel transmitted. Generally, the number of layers mapped can be less than or equal to the number of antenna ports. The code word is mapped to different layers, and subsequently, multiple data streams can be transmitted through multiple antenna ports to achieve spatial multiplexing.

[0135] The code word here can be understood as a modulation symbol of the signal. In the embodiment of the application, the layer mapping of the signal can be understood as mapping the modulation symbol of the signal to one or more layers.

[0136] FIG. 5 is a schematic diagram of layer mapping. In this example, taking a single-codeword two-stream as an example, it is assumed that a codeword contains X(0), X(l), X(2), X(3), X(4) and X(5), wherein X(0), X(2) and X(4) can be mapped to layer 1 after layer mapping, and X(l), X(3) and X(5) can be mapped to layer 2 after layer mapping.

[0137] Before the network device transmits downlink signaling and downlink data to the terminal device through the PDCCH and the PDSCH, the network device can map the modulation symbols of the signals carried by the PDCCH and the PDSCH to one or more layers of OFDM symbols or REs.

[0138] The signals carried by the PDCCH can be used to transmit downlink control information (DCI). The DCI can be used to indicate downlink scheduling information (for the terminal device to receive the PDSCH), uplink scheduling information (for the terminal device to transmit a physical uplink shared channel (PUSCH)), and transmission of other physical layer control information such as slot format indication (SFI), resource pre-emption indication (PI), and power control command, etc. to assist the terminal device in receiving and transmitting data.

[0139] The signals carried by the PDSCH can be used to transmit user data.

[0140] In this application, the signals carried by the PDCCH can be referred to as PDCCH signals, and the signals carried by the PDSCH can be referred to as PDSCH signals.

[0141] FIG. 6 is a schematic diagram of a mapping manner of PDCCH signals and PDSCH signals. In this example, all the boxes can represent a layer, wherein a column can represent an OFDM symbol, and a row can represent an RE. The modulation symbols of the PDCCH signals can be mapped to the first two OFDM symbols, and the modulation symbols of the PDSCH signals can be mapped to the third OFDM symbol. This example is applicable to a case where PDCCH signal rate matching is not enabled.

[0142] In this example, the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal are mapped to different OFDM symbols, i.e., the PDCCH signal and the PDSCH signal are time-division multiplexed. When the modulation symbols of the PDCCH signal are mapped to the partial REs on the first two OFDM symbols, the remaining REs on the first two OFDM symbols are not mapped to the modulation symbols of other signals, i.e., the remaining REs on the first two OFDM symbols do not transmit information, causing a waste of frequency domain resources.

[0143] FIG. 7 is a schematic diagram of another mapping manner of a PDCCH signal and a PDSCH signal. In this example, all the blocks can represent a layer, one column can represent an OFDM symbol, and one row can represent an RE. The modulation symbols of the PDCCH signal can be mapped to the partial 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 to the case where the PDCCH signal rate matching is enabled.

[0144] In this example, the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can be mapped to the same OFDM symbol, i.e., the PDCCH signal and the PDSCH signal are time-division multiplexed and frequency-division multiplexed, which can improve the utilization of frequency domain resources.

[0145] Optionally, in some scenarios, the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can also be mapped to different layers. Taking the mapping manner of FIG. 7 as an example, a mapping position diagram in which the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal are mapped to different layers can be as shown in FIG. 8. 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 layer 1 and layer 2. The mapping position of the modulation symbols of the PDCCH signal to layer 1 is similar to that of FIG. 7, and the starting position of the REs on which the modulation symbols of the PDSCH signal are mapped to the first two OFDM symbols of layer 2 is the same as the starting position of the REs on which the modulation symbols of the PDSCH signal are mapped to the first two OFDM symbols of layer 1. In other words, the starting position of the frequency domain resources on which the modulation symbols of the PDSCH signal are mapped to layer 2 is the same as the starting position of the frequency domain resources on which the modulation symbols of the PDSCH signal are mapped to layer 1.

[0146] In this example, because the PDCCH signal has a higher reliability requirement, the blank position in layer 2 (the blank position in layer 2 is the same as the position of the PDCCH signal in 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.

[0147] However, for some terminal devices with high signal-to-noise ratio, the reliability requirement for the mapped signal is relatively low, that is, even if the modulation symbol of the PDSCH signal is mapped to the position of the frequency domain resource in layer 2 and the modulation symbol of the PDCCH signal is mapped to the position of the frequency domain resource in layer 1, the terminal device can demodulate the PDCCH signal. In this case, if the PDCCH signal and the PDSCH signal are layer-mapped based on the existing mapping mode, there is a part of resources in layer 2 that does not transmit information, causing waste of spatial domain resources, and further affecting the data transmission rate, resulting in large data transmission delay.

[0148] Therefore, the present application can provide a data processing method, which is used to solve the problem of large data transmission delay in the prior art when the network device transmits downlink signaling and downlink data through the PDCCH and the PDSCH.

[0149] In the technical solution of the present application, before the network device transmits downlink signaling and downlink data to the terminal device through the PDCCH and the PDSCH, the joint signal of the PDCCH signal and the PDSCH signal can be layer-mapped to realize the space division of the PDCCH signal and the PDSCH signal.

[0150] In the present application, the joint 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 symbol obtained by sorting the modulation symbol of the signal carried by the PDCCH and the modulation symbol of the signal carried by the PDSCH in order, that is, concatenating the modulation symbol of the signal carried by the PDCCH and the modulation symbol of the signal carried by the PDSCH.

[0151] As an example, it is assumed that the modulation symbol of the PDCCH signal is mapped to layer 1, the modulation symbol of the PDSCH signal is mapped to layer 1 and layer 2, and the position of the frequency domain resource to which the modulation symbol of the PDSCH signal is mapped in layer 2 can coincide with the position of the frequency domain resource to which the modulation symbol of the PDCCH signal is mapped in layer 1.

[0152] Here, the position of the frequency domain resource to which the modulation symbol of the PDSCH signal is mapped in layer 2 coinciding with the position of the frequency domain resource to which the modulation symbol of the PDCCH signal is mapped in layer 1 can be understood as: the position of the frequency domain resource to which the modulation symbol of the PDSCH signal is mapped in layer 2 can contain all or part of the position of the frequency domain resource to which the modulation symbol of the PDCCH signal is mapped in layer 1.

[0153] For example, assuming that the modulation symbols of the PDCCH signal are mapped to the positions of layer 1 on the first REs on the first two OFDM symbols, where the first REs can include one or more REs, the modulation symbols of the PDSCH signal can be mapped to the positions of layer 2 on all or part of the first REs on the first two OFDM symbols.

[0154] In the method, when the network device transmits the downlink signaling and the downlink data to the terminal device through the PDCCH and the PDSCH, the spatial resource utilization rate can be improved, thereby facilitating reduction of the data transmission delay and reduction of the data transmission overhead.

[0155] Next, the method of the present application will be described in detail in combination with FIGS. 9-20.

[0156] FIG. 9 is a flow diagram of a data processing method according to an embodiment of the present application.

[0157] S901, the first node determines a first mapping signal, the first mapping signal being obtained by joint layer mapping of a first signal and a second signal, the first signal being used for transmission of control information, and the second signal being used for transmission of service data, and the joint layer mapping being layer mapping performed on a joint signal of the first signal and the second signal.

[0158] In the method, the first node can be a network device, or a device (for example, a chip, a chip system, or a circuit) that can be applied in the network device, or a logic module or software that can realize all or part of the functions of the network device. For example, the module or unit can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0159] Optionally, the data processing method can be applied in a communication system as shown in FIG. 1. As an example, the first node can be a network device as shown in FIG. 1.

[0160] Optionally, the data processing method can also be applied in an O-RAN system. As an example, the first node can be a CU in an access network device as shown in FIG. 3, or a CU-CP or a CU-UP in an access network device as shown in FIG. 4. As another example, the first node can be a DU or a RU in an access network device as shown in FIG. 3.

[0161] In the present application, the joint signal of the first signal and the second signal can be a signal obtained by joint ordering of the first signal and the second signal.

[0162] As an example, the first signal can be a signal carried by a PDCCH, or a PDCCH signal; the second signal can be a signal carried by a PDSCH, or a PDSCH signal. As another example, the first signal can be a signal carried by a physical uplink control channel (PUCCH), or a PUSCH signal; the second signal can be a signal carried by a PUSCH, or a PUSCH signal. Hereinafter, the first signal is taken as a PDCCH signal and the second signal is taken as a PDSCH signal as an example for description.

[0163] In a possible implementation, the first mapping signal can be generated based on a first mapping manner.

[0164] In the first mapping manner, 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 resource to which the part of the modulation symbols of the second signal are mapped is different from the starting position of the frequency domain resource to which the remaining modulation symbols of the second signal are mapped.

[0165] In the first mapping manner, 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 resource to which the part of the modulation symbols of the second signal are mapped is different from the starting position of the frequency domain resource to which the remaining modulation symbols of the second signal are mapped.

[0166] The remaining modulation symbols of the second signal can be other modulation symbols of the second signal except the part of the modulation symbols of the second signal.

[0167] When the first signal is a PDCCH signal, the modulation symbols of the PDCCH signal can be symbols generated by modulating the PDCCH signal by a first modulation scheme. For example, the first modulation scheme can include quadrature phase shift keying (QPSK).

[0168] When the second signal is a PDSCH signal, the modulation symbols of the PDSCH signal can be symbols generated by modulating the PDSCH signal by a second modulation scheme. For example, the second modulation scheme can include QPSK, 16-quadrature amplitude modulation (16-QAM), 64-QAM, and 256-QAM.

[0169] In the first mapping manner, the first layer can include one or more layers, and the second layer can also include one or more layers.

[0170] Optionally, when the first layer comprises a plurality of layers, the partial modulation symbols of the second signal are mapped to a last layer of the first layer.

[0171] Optionally, when the second layer comprises a plurality of layers, the partial modulation symbols of the second signal are mapped to a starting position of the frequency domain resource of the first layer, and the remaining modulation symbols of the second signal are mapped to a starting position of the frequency domain resource of at least one layer of the plurality of layers of the second layer.

[0172] In the method, the first node needs to jointly sort the first signal and the second signal before jointly layer mapping the first signal and the second signal.

[0173] Optionally, the arrangement order of the first signal is before the second signal, i.e., the arrangement order of the first signal in the joint signal is before the second signal, so that the first node can jointly layer map the first signal and the second signal based on the arrangement order of the first signal and the second signal.

[0174] That is, the arrangement order of the modulation symbols of the first signal is before 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 arrangement order of the modulation symbols of the first signal and the modulation symbols of the second signal.

[0175] Here, the first signal can be a more important signal with a higher reliability requirement. The second signal can be a less important signal with a lower reliability requirement.

[0176] Generally, the lower the index of the mapping layer, the better the signal transmission quality. The arrangement order of the first signal is before the second signal, so that the first node can first map the modulation symbols of the first signal to a mapping layer with better transmission quality, which is conducive to ensuring the transmission quality of the first signal.

[0177] Taking the first signal as a PDCCH signal and the second signal as a PDSCH signal as an example, it is assumed that the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can be as shown in (a) of FIG. 10, and the mapping position of the first mapping signal can be as shown in (b) of FIG. 10.

[0178] 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).

[0179] After the first node jointly orders the PDCCH signal and the PDSCH signal, the arrangement order of the modulation symbols of the PDCCH signal and the modulation symbols of the PSCCH signal can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), …, Y(11).

[0180] In this example, X(0), X(1), X(2), Y(0), Y(1) can be mapped to layer 0 according to the arrangement order, and Y(2), Y(3), …, Y(11) can be mapped to layer 1 and layer 2 according to the arrangement order.

[0181] Alternatively, Y(2), Y(3), …, Y(11) can be cross-mapped to layer 1 and layer 2 according to the arrangement order. 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.

[0182] In this example, the first layer includes layer 0, and the second layer includes layer 1 and layer 2.

[0183] It can be understood that in the example shown in FIG. 10, an example in which each layer includes one OFDM symbol is described.

[0184] Alternatively, when each layer includes multiple OFDM symbols, the mapping position of the first mapping signal can be as shown in FIG. 11.

[0185] In this example, the modulation symbols of the PDCCH signal and part 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 and layer 2.

[0186] In this example, the first modulation symbol in the modulation symbols of the PDCCH signal and part of the 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 part of the modulation symbols of the PDSCH signal can be mapped to the third OFDM symbol of layer 0. The second modulation symbol is other than the first modulation symbol in the part of the modulation symbols of the PDSCH signal.

[0187] In this example, the starting position of the part of the modulation symbols of the PDSCH signal mapped to the frequency domain resource of layer 0 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resource of layer 1, and the starting position of the part of the modulation symbols of the PDSCH signal mapped to the frequency domain resource of layer 0 is different from the starting position of the remaining modulation symbols of the PDSCH signal mapped to the frequency domain resource of layer 2.

[0188] Optionally, in some other embodiments, the first layer can comprise a plurality of layers. In this case, the modulation symbols of the first signal and the partial modulation symbols of the second signal can be mapped to the plurality of layers of the first layer based on the arrangement order.

[0189] As an example, assume that the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can be as shown in (a) of FIG. 12, the mapping positions of the first mapping signal can be as shown in (b) of FIG. 12.

[0190] In this example, assume that the modulation symbols of the PDCCH signal comprise X(0), X(1), X(2), …, X(7), and the modulation symbols of the PDSCH signal comprise Y(0), Y(1), Y(2), Y(3), …, Y(11).

[0191] After the first node jointly arranges the PDCCH signal and the PDSCH signal, the arrangement order of the modulation symbols of the PDCCH signal and the modulation symbols of the PSCCH signal can be X(0), X(1), X(2), …, X(7), Y(0), Y(1), Y(2), Y(3), …, Y(11).

[0192] In this example, assume that the modulation symbols of the PDCCH signal comprise X(0), X(1), X(2), X(3), X(4), and the modulation symbols of the PDSCH signal comprise Y(0), Y(1), Y(2), Y(3), …, Y(11).

[0193] Optionally, Y(2), Y(3), …, Y(11) can be cross-mapped to the layer 2 and the layer 3 according to the arrangement order. For example, Y(2), Y(4), Y(6), Y(8), and Y(10) can be mapped to the layer 1, and Y(3), Y(5), Y(7), Y(9), and Y(11) can be mapped to the layer 1.

[0194] In this example, the first layer comprises the layer 0 and the layer 1, and the second layer comprises the layer 2 and the layer 3.

[0195] It can be understood that in the example shown in FIG. 12, an example in which each layer comprises one OFDM symbol is taken as an example for illustration.

[0196] Optionally, when each layer comprises a plurality of OFDM symbols, the mapping positions of the first mapping signal can be as shown in FIG. 13.

[0197] In this example, the partial modulation symbols of the PDCCH signal can be mapped to the layer 0, the remaining modulation symbols of the PDCCH signal and the partial modulation symbols of the PDSCH signal can be mapped to the layer 1, and the remaining modulation symbols of the PDSCH signal can be mapped to the layer 2 and the layer 3.

[0198] The remaining modulation symbols of the PDCCH signal are modulation symbols of the PDCCH signal other than the partial modulation symbols of the PDCCH signal.

[0199] 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, and 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 being a modulation symbol of the partial modulation symbols of the PDSCH signal other than the first modulation symbol.

[0200] 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.

[0201] Optionally, in some other embodiments, the second layer can include one layer. In this case, the remaining modulation symbols of the second signal can be mapped to the second layer based on the arrangement order.

[0202] As an example, assuming that the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can be as shown in (a) of FIG. 14, the mapping positions of the first mapping signal can be as shown in (b) of FIG. 14.

[0203] 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).

[0204] After the first node jointly arranges the PDCCH signal and the PDSCH signal, the arrangement order of the modulation symbols of the PDCCH signal and the modulation symbols of the PSCCH signal can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), …, Y(6).

[0205] In this example, X(0), X(1), X(2), Y(0), Y(1) can be mapped to Layer 0 according to the arrangement order, and Y(2), Y(3), …, Y(6) can be mapped to Layer 1 according to the arrangement order.

[0206] In this example, the first layer includes Layer 0, and the second layer includes Layer 1.

[0207] It can be understood that in the example shown in FIG. 14, an example in which each layer contains one OFDM symbol is taken as an example for description.

[0208] Optionally, when each layer contains multiple OFDM symbols, the mapping position of the first mapping signal can be as shown in FIG. 15.

[0209] In this example, the modulation symbols of the PDCCH signal and part 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.

[0210] In this example, the first modulation symbol in the modulation symbols of the PDCCH signal and part of the 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 modulation symbols of the PDSCH signal and part of the modulation symbols of the PDSCH signal can be mapped to the third OFDM symbol of layer 0. The second modulation symbol is other than the first modulation symbol in the modulation symbols of the PDSCH signal and part of the modulation symbols of the PDSCH signal.

[0211] In this example, the starting position of the mapping of the modulation symbols of the PDSCH signal and part of the modulation symbols of the PDSCH signal to the frequency domain resources of layer 0 is different from the starting position of the mapping of the remaining modulation symbols of the PDSCH signal to the frequency domain resources of layer 1.

[0212] Optionally, in some embodiments, the modulation symbols mapped to the first layer can also not contain 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.

[0213] Optionally, the first layer can contain one or more layers, and the second layer can also contain one or more layers.

[0214] As an example, assuming that the modulation symbols of the PDCCH signal and the modulation symbols of the PDSCH signal can be as shown in (a) of FIG. 16, the mapping position of the first mapping signal can be as shown in (b) of FIG. 16.

[0215] In this example, it is assumed that the modulation symbols of the PDCCH signal contain X(0), X(1), X(2), X(3), and X(4), and the modulation symbols of the PDSCH signal contain Y(0), Y(1), Y(2), Y(3), and Y(4).

[0216] After the first node jointly sorts the PDCCH signal and the PDSCH signal, the arrangement order of the modulation symbols of the PDCCH signal and the modulation symbols of the PSCCH signal can be X(0), X(1), X(2), X(3), X(4), Y(0), Y(1), Y(2), Y(3), and Y(4).

[0217] Wherein, 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.

[0218] In this example, the first layer includes layer 0, and the second layer includes layer 1.

[0219] It can be understood that in the example shown in FIG. 16, an example in which each layer includes one OFDM symbol is described.

[0220] Optionally, when each layer includes multiple OFDM symbols, the mapping position of the first mapping signal can be as shown in FIG. 17.

[0221] In this implementation, the first signal and the second signal are jointly layer-mapped based on the first mapping manner, so that the first signal and the second signal can be spatially divided. When the first signal and the second signal are transmitted between the first node and the second node subsequently, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and facilitating reduction of data transmission overhead.

[0222] Optionally, the first mapping manner can satisfy the following formula:

[0223] 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, i.e., the signal after joint ordering of the first signal and the second signal, represents the number of mapping symbols of the first codeword of the first signal, represents the number of mapping symbols of the first codeword of the second signal, represents the number of symbols of the first mapping signal, 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 to which the modulation symbol of the first signal is mapped, j represents the index of the mapping layer, and 0≤j<layer, i represents the index of the symbol, and x (j) (i) represents the mapping of the i-th modulation symbol of the first signal to the j-th layer of the mapping signal, represents the upward rounding.

[0224] Optionally, in some examples, the index of the mapping layer is j, which represents the j+1-th mapping layer.

[0225] As an example, assuming that the total number of modulation symbols of the first signal and the modulation symbols of the second signal is 28, the number of symbols of the first mapping signal is 28, i.e., and assuming the number of layers of the mapping is 4, and assuming the total number of modulation symbols of the first signal is 8,

[0226] In this example, for the first mapping layer, j = 0, x (0) (i) = d (0) (i).

[0227] For the second mapping layer, j = 1, x (1) (i) = d (0) (i+7).

[0228] For the third mapping layer, j = 2, x (2) (i) = d (0) (2*i+14).

[0229] For the fourth mapping layer, j = 3, x (3) (i) = d (0) (2*i+14+1).

[0230] Since the first layer in the first mapping manner can contain one or more, and the second layer can also contain 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 manner, so as to facilitate the first node to perform joint layer mapping on the first signal and the second signal subsequently, thereby facilitating reduction of data transmission delay and data transmission overhead.

[0231] In another possible implementation manner, the first mapping signal can be generated based on a second mapping manner.

[0232] In the second mapping manner, the modulation symbols of the joint signal of the first signal and the second signal can be mapped to multiple layers.

[0233] In other words, the modulation symbols of the first signal and the second signal can be jointly mapped to multiple layers.

[0234] Wherein, the modulation symbol represents a symbol obtained after modulation of a signal. The modulation symbol of the first signal can be understood as a symbol obtained after modulation of the first signal, and the modulation symbol of the second signal can be understood as a symbol obtained after modulation of the second signal.

[0235] 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 by a first modulation scheme. For example, the first modulation scheme can include quadrature phase shift keying (QPSK).

[0236] 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 by a second modulation scheme. For example, the second modulation scheme can include QPSK, 16-quadrature amplitude modulation (16-QAM), 64-QAM, and 256-QAM.

[0237] In the method, the first node needs to jointly sort the first signal and the second signal before jointly layer mapping the first signal and the second signal.

[0238] Optionally, the arrangement order of the first signal is before the second signal, that is, the arrangement order of the first signal in the joint signal is before the second signal, so that the first node can jointly layer map the first signal and the second signal based on the arrangement order of the first signal and the second signal.

[0239] That is, the arrangement order of the modulation symbol of the first signal is before the modulation symbol of the second signal, so that the first node can map the modulation symbol of the first signal and the modulation symbol of the second signal to different layers based on the arrangement order of the modulation symbol of the first signal and the modulation symbol of the second signal. In this way, the node receiving the first mapped signal can better distinguish the first signal and the second signal after receiving the first mapped signal.

[0240] Taking the first signal as a PDCCH signal and the second signal as a PDSCH signal as an example, it is assumed that the modulation symbol of the PDCCH signal and the modulation symbol of the PDSCH signal can be as shown in (a) of FIG. 18, and the mapping position of the first mapped signal can be as shown in (b) of FIG. 18.

[0241] In this example, the modulation symbol of the PDCCH signal contains X(0), X(1), and X(2), and the modulation symbol of the PDSCH signal can contain Y(0), Y(1), Y(2), Y(3), …, Y(12).

[0242] After the first node jointly sorts the PDCCH signal and the PDSCH signal, the arrangement order of the modulation symbol of the PDCCH signal and the modulation symbol of the PSCCH signal can be X(0), X(1), X(2), Y(0), Y(1), Y(2), Y(3), …, Y(12).

[0243] 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 according to the arrangement order.

[0244] In this example, 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.

[0245] It can be understood that, in the example shown in FIG. 18, an example in which each layer contains one OFDM symbol is taken as an example for description.

[0246] Optionally, when each layer contains multiple OFDM symbols, the mapping positions of the first mapping signals can be as shown in FIG. 19.

[0247] In this example, part of the modulation symbols of the PDCCH signal and part of the 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.

[0248] In this example, the remaining modulation symbols of the PDCCH signal can be other modulation symbols of the PDCCH signal except for the part of the modulation symbols of the PDCCH signal, and the remaining modulation symbols of the PDSCH signal can be other modulation symbols of the PDSCH signal except for the part of the modulation symbols of the PDSCH signal.

[0249] In this example, the starting positions of the frequency domain resources to which the modulation symbols of the PDSCH signal are mapped in layer 0 are different from the starting positions of the frequency domain resources to which the modulation symbols of the PDSCH signal are mapped in layer 1.

[0250] Optionally, in other embodiments, the starting positions of the frequency domain resources to which the modulation symbols of the PDSCH signal are mapped in layer 0 can be the same as the starting positions of the frequency domain resources to which the modulation symbols of the PDSCH signal are mapped in layer 1.

[0251] In this example, an example in which the modulation symbols of the first signal and the modulation symbols of the second signal are mapped to two layers is taken as an example for description. Optionally, when the modulation symbols of the first signal and the modulation symbols of the second signal are mapped to more than two layers, the mapping method is similar to that of FIG. 16 and FIG. 17, and details are not described herein again.

[0252] In this implementation, the first signal and the second signal can be jointly layer-mapped based on the second mapping manner, so that the first signal and the second signal can be spatially divided, and when the first signal and the second signal are transmitted between the first node and the second node, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and data transmission overhead.

[0253] Optionally, the second mapping manner can satisfy the following formula:

[0254] 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, i.e., a signal after joint ordering of the first signal and the second signal, denotes a number of mapped symbols of the first codeword of the first signal, denotes a number of mapped symbols of the first codeword of the second signal, denotes a number of symbols of the first mapped signal, i denotes an index of the symbol.

[0255] In this implementation manner, the first node can determine the signal after joint ordering of the first signal and the second signal based on the formula satisfied by the second mapping manner, facilitating the first node to subsequently perform joint layer mapping on the first signal and the second signal, and can improve the utilization rate of spatial resources, thereby being beneficial to reducing the data transmission delay and data transmission overhead.

[0256] S902, the first node sends the first mapped signal to the second node. Correspondingly, the second node receives the first mapped signal.

[0257] In this method, the first node is a node that sends the first mapped signal, and the first node can also be referred to as a sending node.

[0258] In this method, the second node is a node that receives the first mapped signal, and the second node can also be referred to as a receiving node.

[0259] Optionally, the second node can be a terminal device, or an apparatus (for example, a chip, a chip system, or a circuit) that can be applied in a terminal device, or can be a logic module or software that can realize all or part of the functions of the terminal device. For example, the module or unit can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0260] In this method, the first node can also send first information to the second node, and the first information indicates joint layer mapping on the first signal and the second signal.

[0261] In a possible implementation manner, the first information can be carried in RRC signaling (or RRC parameters).

[0262] As an example, the first information can be indicated by a first parameter in the RRC signaling. For example, when the value of the first parameter is 1, it indicates that the first node performs joint layer mapping on the first signal and the second signal. When the value of the first parameter is 0, it indicates that the first node does not perform joint layer mapping on the first signal and the second signal.

[0263] In this implementation, the first parameter can be set as 1, which can indicate that before the first node transmits downlink signaling and downlink data to the second node through the PDCCH and the PDSCH, the first node maps the first signal and the second signal based on the joint layer mapping manner.

[0264] In another possible implementation, the first information can be carried in the DCI.

[0265] For example, the first information can be indicated by a second parameter in the DCI. For example, when the second parameter is set as 1, it indicates that the first node performs joint layer mapping on the first signal and the second signal. When the second parameter is set as 0, it indicates that the first node does not perform joint layer mapping on the first signal and the second signal.

[0266] In this implementation, the first node transmits the first information to the second node each time the first node performs joint layer mapping on the first signal and the second signal.

[0267] In this method, the receiving node can determine, based on the first information, that the first mapping signal is a signal obtained after joint layer mapping on the first signal and the second signal, which is beneficial to the receiving node to perform layer demapping on the first mapping signal, so as to demodulate the first signal and the second signal.

[0268] In this method, the first node can further transmit second information to the second node, where the second information indicates a mapping manner of the first mapping signal, and the mapping manner of the first mapping signal includes a first mapping manner and a second mapping manner.

[0269] Optionally, the second information can be carried in RRC signaling.

[0270] For example, the second information can be indicated by a third parameter in the RRC signaling. For example, when the third parameter is set as 1, it indicates that the mapping manner of the first mapping signal is the first mapping manner. When the third parameter is set as 0, it indicates that the mapping manner of the first mapping signal is the second mapping manner.

[0271] In this method, the second node can determine, based on the second information, the mapping manner of the first mapping signal, and then perform layer demapping based on the mapping manner, which is beneficial to avoid inaccurate demodulation of the signal.

[0272] Optionally, in some other embodiments, the first node can not transmit the second information to the second node. In this case, the mapping manner of the first mapping signal can be predefined. For example, the mapping manner of the first mapping signal can be preconfigured at the first node and the second node.

[0273] In the method, the first node can further receive third information from the second node before performing the joint layer mapping on the first signal and the second signal, the third information indicating that the second node supports the joint layer mapping on the first signal and the second signal.

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

[0275] As an example, the third information can be indicated by a fourth parameter in the RRC signaling. For example, when the fourth parameter has a value of 1, it indicates that the second node supports the joint layer mapping on the first signal and the second signal. When the fourth parameter has a value of 0, it indicates that the second node does not support the joint layer mapping on the first signal and the second signal.

[0276] In this example, when the fourth parameter has a value of 1, the first node performs the joint layer mapping on the first signal and the second signal.

[0277] In the method, the first node generates and transmits the first mapped signal only when it is determined that the receiving node supports the joint layer mapping on the first signal and the second signal, thereby avoiding resource waste when the receiving node cannot demodulate the first mapped signal.

[0278] S903, the second node demaps the first mapped signal.

[0279] In the method, when the first node transmits the second information to the second node, the second node can demap the first mapped signal based on the mapping manner of the first mapped signal indicated by the second information.

[0280] In the technical solution of the present application, the first signal and the second signal are subjected to joint layer mapping, so that the first signal and the second signal can be spatially separated, and when the first node and the second node subsequently transmit the first signal and the second signal, the spatial resource utilization rate can be improved, thereby facilitating reduction of data transmission delay and data transmission cost.

[0281] FIG. 20 is a structural schematic diagram of a data processing apparatus provided by an embodiment of the present application. As shown in FIG. 20, the data processing apparatus 2000 can include a processing module 2001 and a transceiver module 2002.

[0282] As an example, the data processing apparatus 2000 can be used to implement the data processing method of the embodiment shown in FIG. 9. The processing module 2001 can be used to perform S901, and the transceiver module 2002 can be used to perform S902.

[0283] Optionally, the data processing apparatus 2000 can be applied in the first node. For example, the first node can be a network device, or a device (e.g., a chip, a chip system, or a circuit) in the network device, or can be a logic module or software capable of implementing all or part of the network device functions, which can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0284] Optionally, when the data processing apparatus 2000 is applied in a chip or a chip system in the network device, the sending / receiving can correspond to the behavior related to signal sending or receiving, which can be understood as the behavior of sending / receiving a radio frequency signal in an analog / intermediate frequency / radio frequency domain, or can be understood as the operation of starting or controlling the sending / receiving in a digital domain, or a combination of the two. For example, when the network device sends or receives various signals, the processor in the network device implements the sending or receiving by driving or controlling the radio frequency circuit. Therefore, during the signal transceiving, the processor is the decision maker or controller of the transceiving operation, and the radio frequency circuit is the specific transceiving performer, and the two cooperate with the antenna to jointly implement the transceiving operation.

[0285] As another example, the data processing apparatus 2100 can be used to implement the data processing method of the embodiment shown in FIG. 9. Among them, the transceiving module 2002 can be used to perform S902, and the processing module 2001 can be used to perform S903.

[0286] Optionally, the data processing apparatus 2000 can be applied in the second node. For example, the second node can be a terminal device, or a device (e.g., a chip, a chip system, or a circuit) in the terminal device, or can be a logic module or software capable of implementing all or part of the terminal device functions. In one possible implementation, modules or units for implementing the method in the second aspect and any possible implementation of the second aspect are included. For example, modules or units corresponding to the method / operation / step / action described in the second aspect can be included, which can be a hardware circuit, or software, or a combination of hardware circuit and software.

[0287] Optionally, when the data processing apparatus 2000 is applied in a chip or a chip system in the terminal device, the sending / receiving can correspond to the behavior related to signal sending or receiving, which can be understood as the behavior of sending / receiving a radio frequency signal in an analog / intermediate frequency / radio frequency domain, or can be understood as the operation of starting or controlling the sending / receiving in a digital domain, or a combination of the two. For example, when the terminal device sends or receives various signals, the processor in the terminal device implements the sending or receiving by driving or controlling the radio frequency circuit. Therefore, during the signal transceiving, the processor is the decision maker or controller of the transceiving operation, and the radio frequency circuit is the specific transceiving performer, and the two cooperate with the antenna to jointly implement the transceiving operation.

[0288] In the embodiments of the present application, the processor can be one or more central processing units (CPUs). When the processor is a CPU, the CPU 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), a field programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or a combination of the foregoing. The general purpose processor can be a microprocessor or any conventional processor.

[0289] The radio frequency circuit can include, but is not limited to, a radio frequency chip, a radio frequency front end, a radio frequency power amplifier (PA), a low noise amplifier (LNA), a mixer, a filter, a duplexer, and the like. Optionally, the radio frequency circuit can also include an antenna integrated with the radio frequency circuit.

[0290] The method steps in the embodiments of the present application can be implemented by means of hardware, or by means of a processor executing software instructions. The software instructions can be composed of corresponding software modules, which can be stored in a memory or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal. Of course, the processor and the storage medium can also exist as discrete components in the network device or the terminal.

[0291] In this application, the memory can include cache, random access memory (RAM), flash memory, read-only memory (ROM), synchronous dynamic random access memory (SDRAM), programmable read-only memory, erasable programmable ROM (EPROM), electrically erasable programmable ROM, register, hard disk drive (HDD), or solid-state drive (SSD), mobile hard disk, or compact disc read-only memory (CD-ROM) and the like. The memory is any other medium capable of storing desired program codes in the form of instructions or data structures and capable of being accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application can also be a circuit or any other device capable of realizing a storage function, used for storing computer programs or instructions, and / or data.

[0292] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are performed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment or other programmable apparatus. The computer programs 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 programs or instructions can be transferred from one website site, computer, server or data center to another website site, computer, server or data center through wired or wireless manner. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center and the like integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; and a semiconductor medium, such as a solid-state disk.

[0293] The embodiment of the present application further provides a computer readable storage medium, which stores a computer program or instructions, and the computer program or instructions are executed by a computer (for example, a processor) to implement part or all steps of any one of the methods performed by any device in the embodiments of the present application.

[0294] The embodiment of the present application further provides a computer program product including a computer program or a set of instructions, which, when executed on a computer, implements part or all steps of any one of the methods performed by any device in the embodiments of the present application.

[0295] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0296] It can be understood that various numbers involved in the embodiments of the present application are only distinguished for convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial numbers of the above processes does not mean the execution order, and the execution order of the processes should be determined according to their functions and inherent logic.

Claims

1. A data processing method, characterized in that, The method includes: Receive a first mapped signal, which is a signal obtained by mapping a first signal and a second signal through a 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. The first mapped signal is de-mapped.

2. The method according to claim 1, characterized in that, The first mapped signal is generated based on the first mapping method; 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.

3. The method according to claim 2, characterized in that, The first mapping method satisfies the following formula: 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. Denote 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, This indicates rounding up to the nearest integer.

4. The method according to claim 1, characterized in that, The first mapped signal is generated based on the second mapping method; The second mapping method includes mapping the modulation symbols of the combined signal of the first signal and the second signal to multiple layers.

5. The method according to claim 4, characterized in that, The second mapping method satisfies the following formula: 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 symbol number represents the first mapped signal, and i represents the symbol index.

6. The method according to any one of claims 1 to 5, characterized in that, The method further includes: Receive first information, which indicates that a 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 includes: Receive second information, the second information indicating the mapping method of the first mapping signal, the mapping method including a first mapping method and a second mapping method; The step of de-mapping the first mapped signal includes: The first mapped signal is de-mapped based on the mapping method of the first mapped signal.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: Send a third message, which instructs the receiving node to support joint layer mapping of 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 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).

10. A data processing method, characterized in that, The method includes: A first mapping signal is determined. 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, and the second signal is used to transmit service data. The joint layer mapping is a layer mapping performed on a joint signal of the first signal and the second signal. Send the first mapping signal.

11. The method according to claim 10, characterized in that, The first mapped signal is generated based on the first mapping method; 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.

12. The method according to claim 11, characterized in that, The first mapping method satisfies the following formula: 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. Denote 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 i-th modulation symbol of the first signal to the j-th layer, This indicates rounding up to the nearest integer.

13. The method according to claim 10, characterized in that, The first mapped signal is generated based on the second mapping method; The second mapping method includes mapping the modulation symbols of the combined signal of the first signal and the second signal to multiple layers.

14. The method according to claim 13, characterized in that, The second mapping method satisfies the following formula: 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 symbol number represents the first mapped signal, and i represents the symbol index.

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

16. The method according to any one of claims 10 to 15, characterized in that, The method further includes: Send a first message, which instructs a 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 includes: Send a second message, the second message indicating the mapping method of the first mapping signal, the mapping method including a first mapping method and a second mapping method.

18. The method according to any one of claims 10 to 17, characterized in that, The method further includes: Receive third information, which indicates 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 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).

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

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

22. The apparatus according to claim 21, characterized in that, The data processing device further includes a memory for storing the computer program or instructions.

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

24. A computer program product, characterized in that, The computer program product includes instructions for implementing the method as described in 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 as described in any one of claims 1 to 9, and the transmitting node being configured to implement the method as described in any one of claims 10 to 19.

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