A method and apparatus for identifying a wireless resource

Abstract

The application provides a wireless resource identification method and device, which are used for identifying wireless resources with an orbital angular momentum (OAM) mode domain. The method comprises the following steps: obtaining OAM mode domain information, wherein the OAM mode domain information comprises a first OAM mode domain identifier, the first OAM mode domain identifier corresponds to a first transmission parameter of a vortex electromagnetic wave in a first OAM physical mode, or the first OAM mode domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, and the reference value comprises a transmission parameter of a plane electromagnetic wave or a transmission parameter of a vortex electromagnetic wave in a specified OAM physical mode in a plurality of OAM physical modes; vortex electromagnetic wave channels passed by an arbitrary plurality of waveform symbols when the arbitrary plurality of waveform symbols are transmitted through resources with the same OAM mode domain identifier are the same; and determining wireless resources for uplink transmission or downlink transmission according to the OAM mode domain information.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication technology, and in particular to a method and apparatus for identifying wireless resources. BACKGROUND

[0002] High capacity and high spectral efficiency have always been urgent problems to be solved in the field of wireless communication. In recent years, many novel wireless transmission technologies are emerging, such as the vortex electromagnetic wave technology carrying orbital angular momentum (OAM). The vortex electromagnetic wave is characterized by a spiral phase distribution in space due to the rotation of the electromagnetic field around the propagation axis, and the phase front presents a spiral shape. The OAM electromagnetic wave contains a certain topological charge, which is called OAM mode. Electromagnetic waves carrying different OAM modes are orthogonal when transmitted coaxially in space. Due to this inherent characteristic of OAM, OAM is independent of existing resources such as frequency, time, code word and polarization. In theory, if different information is loaded into different OAM modes and shared in the same frequency band for interference-free transmission, the channel capacity of the wireless communication system can be increased, and the spectral efficiency will be significantly improved.

[0003] In the prior art, different time domain information or code domain information can be distinguished by identifying wireless resources. How to identify wireless resources with OAM mode domain is a problem that needs attention. SUMMARY

[0004] Embodiments of the present application provide a method and apparatus for identifying wireless resources, which are used to identify wireless resources with OAM mode domain.

[0005] Firstly, a method for identifying wireless resources is provided. This method can be implemented through the following steps: acquiring orbital angular momentum (OAM) mode domain information, wherein the OAM mode domain information includes a first OAM mode domain identifier, the first OAM mode domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM mode domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channel traversed by any number of waveform symbols when transmitted through resources with the same OAM mode domain identifier is the same; and determining the wireless resources used for uplink or downlink transmission based on the OAM mode domain information. Through the above method, wireless resources can be determined using the OAM mode domain identifier. The OAM mode domain identifier is related to the transmission parameters of the vortex electromagnetic wave and can be regarded as an OAM logical mode. Compared with the method of determining wireless resources using OAM physical modes, this method is more universal and avoids the influence of physical antenna arrays and OAM physical modes on higher-layer communication protocol logic.

[0006] In one possible design, the OAM modal domain identifier corresponds to the first index in a sorting sequence of multiple ratios, where the multiple ratios are the ratios between the transmission parameters of the vortex electromagnetic wave under the multiple OAM physical modes and the reference value. If two or more ratios happen to be equal, the equal ratios can be sorted randomly, or according to the rule that the ratio with the smaller number of OAM physical modes comes first, or according to the rule that positive numbers come first over negative numbers, or a combination of two sorting rules can be used.

[0007] In one possible implementation, the OAM modal domain identifier corresponds to the first sequence number in the sorting sequence of vortex electromagnetic wave transmission parameters under multiple OAM physical modes.

[0008] In one possible design, the sorting sequence number conforms to any of the following sorting rules: descending order, ascending order, odd / even number, modulo operation, or weighted sorting. In one possible design, the OAM modal domain information also includes any one or more of the following combinations: crosstalk coefficient, beam spread angle, or the first OAM physical mode; wherein the crosstalk coefficient and the beam spread angle both correspond to the first OAM physical mode; the crosstalk system includes: the crosstalk coefficient between vortex electromagnetic waves and plane electromagnetic waves under the first OAM physical mode, or the crosstalk coefficient between vortex electromagnetic waves under the first OAM physical mode and vortex electromagnetic waves under the specified OAM physical mode.

[0009] In one possible design, obtaining the OAM modality information includes: receiving the OAM modality information from a network device; or, obtaining the stored OAM modality information.

[0010] In one possible design, receiving the OAM modality information from a network device includes: receiving an uplink scheduling grant (UL-Grant) message from the network device, wherein the UL-Grant message carries the OAM modality information; or receiving downlink control information (DCI) from the network device, wherein the DCI carries the OAM modality information.

[0011] In one possible design, if the OAM mode domain information is received from a network device, the method further includes: receiving a first reference signal from the network device, wherein the first reference signal is the plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes; determining the reference value based on the first reference signal; and sending the reference value to the network device.

[0012] In one possible design, the method further includes: receiving a plurality of second reference signals from the network device, the plurality of second reference signals being vortex electromagnetic waves under the plurality of OAM physical modes; determining transmission parameters of the vortex electromagnetic waves under the plurality of OAM physical modes based on the second reference signals; and sending the transmission parameters of the vortex electromagnetic waves under the plurality of OAM physical modes to the network device.

[0013] In one possible design, the method further includes: sending capability information to the network device, the capability information including supported OAM physical modes, for the network device to send vortex electromagnetic waves under the plurality of OAM physical modes according to the capability information.

[0014] In one possible design, the method further includes: receiving a mixed wave from the network device; wherein, if the reference value is the transmission parameter of a plane electromagnetic wave, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes and the plane electromagnetic wave; or, if the reference value is the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes; the plurality of OAM physical modes includes the first OAM physical mode; determining the crosstalk coefficient between each vortex electromagnetic wave under the OAM physical mode and the wave corresponding to the reference value based on the mixed wave; and sending the determined crosstalk coefficient to the network device.

[0015] In one possible design, the OAM mode domain identifier includes an integer and / or a fraction. Using a fractional OAM mode domain identifier can improve the ability to counteract wireless multipath channel effects. The OAM mode domain identifier in this application embodiment is more flexible. Furthermore, this application embodiment does not require that the antenna array specifications of the transmitting and receiving ends be identical, making it applicable to scenarios where the antenna array specifications of the transmitting and receiving ends are inconsistent. This application embodiment also does not require that the antenna array specifications of different OAM modes be identical, making it applicable to scenarios where the antenna array specifications of different OAM modes differ. This application embodiment is more universal and flexible. In summary, the OAM mode domain identifier in this application embodiment can shield the influence of physical antenna arrays and physical OAM modes on the logic of higher-layer communication protocols. In addition, using performance metrics represented by signal-to-noise ratio for calculation and using the converted logical mode as a scheduling reference greatly increases the universality and flexibility of the scheduling algorithm.

[0016] In one possible design, the first transmission parameter or the transmission parameter includes any one or more of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

[0017] In one possible design, determining radio resources based on the OAM modal domain information includes: determining radio resources based on the OAM modal domain information, combined with time-domain identifiers and / or frequency-domain identifiers. This extends radio resources from a two-dimensional time-frequency domain to a three-dimensional time-frequency-modal domain, and by using OAM modal domain identifiers to map modal domain resources to physically antenna-independent normalized resources, the flexibility of scheduling three-dimensional time-frequency-modal radio resources is enhanced. By adding the OAM modal domain dimension, multiple data streams can communicate simultaneously on the same time-frequency resources and the same antenna port.

[0018] Secondly, a method for identifying wireless resources is provided. This method includes the following steps: determining orbital angular momentum (OAM) mode domain information, wherein the OAM mode domain information includes a first OAM mode domain identifier, the first OAM mode domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM mode domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameters of a plane electromagnetic wave or the transmission parameters of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channels traversed by any number of waveform symbols when transmitted through resources with the same OAM mode domain identifier are identical; and sending the OAM mode domain information to a terminal device. Through this method, OAM mode domain identifiers can be used to determine wireless resources. Since the OAM mode domain identifier is related to the transmission parameters of vortex electromagnetic waves and can be considered as an OAM logical mode, it is more universal than methods using OAM physical modes to determine wireless resources, avoiding the influence of physical antenna arrays and OAM physical modes on higher-layer communication protocol logic.

[0019] In one possible design, the method further includes: determining multiple OAM modal domain identifiers, the multiple OAM modal domain identifiers including the first OAM modal domain identifier; sending the multiple OAM modal domain identifiers to the terminal device; determining the multiple OAM modal domain identifiers includes: sending vortex electromagnetic waves under multiple OAM physical modes to the terminal device; receiving transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes fed back from the terminal device; obtaining multiple OAM modal domain identifiers according to the sorting sequence number of the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes; if two or more transmission parameters happen to be equal, the equal transmission parameters can be randomly sorted, or sorted according to the rule that the smaller number of OAM physical modes corresponding to the ratio is ranked first, or sorted according to the rule that positive numbers are ranked first compared to negative numbers, or a combination of two sorting rules can be used for sorting.

[0020] Alternatively, determining multiple OAM mode domain identifiers includes: sending a reference electromagnetic wave to the terminal device and receiving transmission parameters of the reference electromagnetic wave fed back from the terminal device; sending vortex electromagnetic waves under multiple OAM physical modes to the terminal device and receiving transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes fed back from the terminal device; determining the ratio of the transmission parameters of the vortex electromagnetic waves under each OAM physical mode to the transmission parameters of the reference electromagnetic wave, obtaining multiple ratios corresponding to multiple OAM physical modes; obtaining multiple OAM mode domain identifiers according to the sorting sequence number of the multiple ratios; the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the multiple OAM physical modes. Optionally, if two or more ratios happen to be equal, the multiple equal ratios can be randomly sorted, or sorted according to the rule that the ratio with the smaller number of OAM physical modes comes first, or sorted according to the rule that positive numbers come first over negative numbers, or a combination of two sorting rules.

[0021] In one possible design, the method further includes: receiving capability information from the terminal device, the capability information indicating the OAM physical modes supported by the terminal device; and determining, based on the capability information, vortex electromagnetic waves of the plurality of OAM physical modes to be transmitted to the terminal device, wherein the transmitted vortex electromagnetic waves of the OAM physical modes are supported by the terminal device.

[0022] In one possible design, the method further includes: sending a hybrid wave to the terminal device, the hybrid wave including vortex electromagnetic waves under the plurality of OAM physical modes and a reference electromagnetic wave, the reference electromagnetic wave being a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes; receiving crosstalk coefficients between the vortex electromagnetic waves under the plurality of OAM physical modes and the reference electromagnetic wave from the terminal device; and sending the crosstalk coefficients corresponding to the domain identifiers of the plurality of OAM modes to the terminal device.

[0023] In one possible design, the method further includes: determining the beam spread angle of the plurality of OAM physical modes; and sending the beam spread angles corresponding to the plurality of OAM mode domain identifiers to the terminal device.

[0024] In one possible design, the OAM mode domain identifier includes an integer and / or a fraction. Using a fractional OAM mode domain identifier can improve the ability to counteract wireless multipath channel effects. The OAM mode domain identifier in this application embodiment is more flexible. Furthermore, this application embodiment does not require that the antenna array specifications of the transmitting and receiving ends be identical, making it applicable to scenarios where the antenna array specifications of the transmitting and receiving ends are inconsistent. This application embodiment also does not require that the antenna array specifications of different OAM modes be identical, making it applicable to scenarios where the antenna array specifications of different OAM modes differ. This application embodiment is more universal and flexible. In summary, the OAM mode domain identifier in this application embodiment can shield the influence of physical antenna arrays and physical OAM modes on the logic of higher-layer communication protocols. In addition, using performance metrics represented by signal-to-noise ratio for calculation and using the converted logical mode as a scheduling reference greatly increases the universality and flexibility of the scheduling algorithm.

[0025] In one possible design, the transmission parameters include any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

[0026] Thirdly, a communication device is provided. This device may be a terminal device, a device located within a terminal device (e.g., a chip, a chip system, or a circuit), or a device compatible with a terminal device. The device has the functionality to implement the methods described in the first aspect and any possible design of the first aspect. The functionality can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. In one design, the device may include an acquisition module and a determination module. Exemplarily:

[0027] An acquisition module is used to acquire orbital angular momentum (OAM) mode domain information, wherein the OAM mode domain information includes a first OAM mode domain identifier, the first OAM mode domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM mode domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM mode domain identifier; a determination module is used to determine the radio resources used for uplink or downlink transmission based on the OAM mode domain information.

[0028] In one possible design, the OAM modal domain identifier corresponds to the first number in a sorting sequence of multiple ratios, which are the ratios between the transmission parameters of the vortex electromagnetic waves in the multiple OAM physical modes and the reference value.

[0029] In one possible design, the sorting number conforms to any of the following sorting rules: descending order, ascending order, odd / even number, modulo operation, or weighted sorting.

[0030] In one possible design, the OAM modal domain information may further include any one or more of the following combinations: crosstalk coefficient, beam spread angle, or the first OAM physical mode; wherein the crosstalk coefficient and the beam spread angle both correspond to the first OAM physical mode; the crosstalk system includes: the crosstalk coefficient between the vortex electromagnetic wave and the plane electromagnetic wave under the first OAM physical mode, or the crosstalk coefficient between the vortex electromagnetic wave under the first OAM physical mode and the vortex electromagnetic wave under the specified OAM physical mode.

[0031] In one possible design, the device further includes:

[0032] The communication module is configured to receive a first reference signal from the network device, wherein the first reference signal is either the plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes;

[0033] The determining module is further configured to determine the reference value based on the first reference signal;

[0034] The communication module is also used to send the reference value to the network device.

[0035] In one possible design, the communication module is further configured to receive a plurality of second reference signals from the network device, the plurality of second reference signals being vortex electromagnetic waves under the plurality of OAM physical modes;

[0036] The determining module is further configured to determine the transmission parameters of the vortex electromagnetic waves under the plurality of OAM physical modes based on the second reference signal;

[0037] The communication module is also used to send the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes to the network device.

[0038] In one possible design, the communication module is also used to send capability information to the network device, the capability information including supported OAM physical modes.

[0039] In one possible design, the communication module is further configured to receive a mixed wave from the network device; wherein, if the reference value is the transmission parameter of a plane electromagnetic wave, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes and the plane electromagnetic wave; or, if the reference value is the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes; the plurality of OAM physical modes includes the first OAM physical mode;

[0040] The determining module is further configured to determine the crosstalk coefficient between the vortex electromagnetic wave and the corresponding wave of the reference value under each OAM physical mode based on the mixed wave; the communication module is further configured to send the determined crosstalk coefficient to the network device.

[0041] In one possible design, the OAM modal domain identifier includes integers and / or fractions.

[0042] In one possible design, the first transmission parameter or the transmission parameter includes any one or more of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

[0043] In one possible design, the determining module is configured to: determine radio resources based on the OAM modal domain information, combined with time domain identifiers and / or frequency domain identifiers.

[0044] Fourthly, a communication device is provided. This device may be a network device, a device located within a network device (e.g., a chip, a chip system, or a circuit), or a device compatible with a network device. In one design, the device may include modules corresponding to each of the methods / operations / steps / actions described in the second aspect. These modules may be hardware circuits, software, or a combination of hardware circuits and software implementation. In one design, the device may include a determining module and a communication module. Exemplarily:

[0045] A determination module is used to determine orbital angular momentum (OAM) mode domain information, wherein the OAM mode domain information includes a first OAM mode domain identifier, the first OAM mode domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM mode domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM mode domain identifier; a communication module is used to send the OAM mode domain information to a terminal device.

[0046] In one possible design, the determining module is further configured to: determine a plurality of OAM modal domain identifiers, the plurality of OAM modal domain identifiers including the first OAM modal domain identifier; the communication module is further configured to send the plurality of OAM modal domain identifiers;

[0047] When determining multiple OAM modal domain identifiers:

[0048] The communication module is used to transmit vortex electromagnetic waves under multiple OAM physical modes; receive transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes fed back from the terminal device; the determining module is used to obtain multiple OAM mode domain identifiers according to the sorting sequence number of the transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes.

[0049] Alternatively, the communication module is configured to transmit a reference electromagnetic wave and receive transmission parameters of the reference electromagnetic wave fed back from the terminal device; transmit vortex electromagnetic waves under multiple OAM physical modes and receive transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes fed back from the terminal device; the determining module is configured to determine the ratio of the transmission parameters of the vortex electromagnetic wave under each OAM physical mode to the transmission parameters of the reference electromagnetic wave, thereby obtaining multiple ratios corresponding to multiple OAM physical modes; and obtain multiple OAM mode domain identifiers according to the sorting sequence number of the multiple ratios; the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the multiple OAM physical modes.

[0050] In one possible design, the device further includes:

[0051] Receive capability information from the terminal device, the capability information being used to indicate the OAM physical modes supported by the terminal device;

[0052] Based on the capability information, the vortex electromagnetic waves under the multiple OAM physical modes to be transmitted are determined.

[0053] In one possible design, the communication module is further used for:

[0054] Transmit a hybrid wave, which includes vortex electromagnetic waves under the plurality of OAM physical modes and a reference electromagnetic wave, wherein the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes;

[0055] The crosstalk coefficients between the vortex electromagnetic waves in the multiple OAM physical modes received from the terminal device and the reference electromagnetic wave are received respectively.

[0056] Send the crosstalk coefficients corresponding to the multiple OAM modal domain identifiers respectively.

[0057] In one possible design, the determining module is also used to determine the beam spread angle of the plurality of OAM physical modes;

[0058] The communication module is also used to send the beam spread angles corresponding to the multiple OAM mode domain identifiers.

[0059] In one possible design, the OAM modal domain identifier includes integers and / or fractions.

[0060] In one possible design, the transmission parameters include any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

[0061] Fifthly, embodiments of this application provide a communication device including a communication interface and a processor. The communication interface is used for communication between the device and other devices, such as the transmission and reception of data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface, and the other devices may be network devices. The processor is used to invoke a set of programs, instructions, or data to execute the methods described in the first aspect or various possible designs of the first aspect. The device may further include a memory for storing programs, instructions, or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, it can implement the methods described in the first aspect or various possible designs of the first aspect.

[0062] Sixthly, embodiments of this application provide a communication device including a communication interface and a processor. The communication interface is used for communication between the device and other devices, such as the transmission and reception of data or signals. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface, and the other devices may be terminal devices. The processor is used to invoke a set of programs, instructions, or data to execute the methods described in the second aspect or various possible designs of the second aspect. The device may further include a memory for storing programs, instructions, or data invoked by the processor. The memory is coupled to the processor, and when the processor executes the instructions or data stored in the memory, it can implement the methods described in the second aspect or various possible designs of the second aspect.

[0063] In a seventh aspect, embodiments of this application also provide a computer-readable storage medium storing computer-readable instructions that, when executed on a computer, cause the methods described in the first aspect, the second aspect, various possible designs of the first aspect, or various possible designs of the second aspect to be performed.

[0064] Eighthly, embodiments of this application provide a chip system including a processor and potentially a memory, for implementing the methods described in the first aspect, the second aspect, and various possible designs of the first aspect or the second aspect. The chip system may be composed of chips or may include chips and other discrete devices.

[0065] Ninthly, embodiments of this application provide a communication system, the system including a terminal device and a network device, the terminal device being used to execute the methods in the first aspect or various possible designs of the first aspect, and the network device being used to execute the methods in the second aspect or various possible designs of the second aspect.

[0066] In a tenth aspect, a computer program product comprising instructions is provided that, when run on a computer, causes the methods described in the first aspect, the second aspect, and various possible designs of the first aspect or the second aspect described above to be performed. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of the communication system architecture in the embodiments of this application;

[0068] Figure 2 This is a schematic diagram of the RE identification method in the embodiments of this application;

[0069] Figure 3 This is a schematic diagram of the wireless resource identification method in an embodiment of this application;

[0070] Figure 4 This is one of the flowcharts illustrating the method for determining the OAM modality domain identifier in a network device according to an embodiment of this application.

[0071] Figure 5 This is a schematic diagram of the antenna arrays of the network device and the terminal device in the embodiments of this application;

[0072] Figure 6 This is the second schematic diagram of the method for determining the OAM modality domain identifier of a network device in this application embodiment;

[0073] Figure 7 This is a schematic diagram of the antenna array of the network device in the embodiments of this application;

[0074] Figure 8 This is the third schematic diagram of the method for determining the OAM modality domain identifier of a network device in this application embodiment;

[0075] Figure 9 This is a schematic diagram of the resource unit identification method in an embodiment of this application;

[0076] Figure 10 This is one of the schematic diagrams of the communication device structure in the embodiments of this application;

[0077] Figure 11 This is the second schematic diagram of the communication device structure in the embodiments of this application;

[0078] Figure 12 This is the third schematic diagram of the communication device structure in the embodiments of this application. Detailed Implementation

[0079] This application provides a method and apparatus for identifying wireless resources. The method and apparatus are based on the same technical concept. Since the methods and apparatus solve problems in similar principles, their implementations can be mutually referenced, and repeated details will not be elaborated further. In the description of this application's embodiments, "and / or" describes the relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following associated objects have an "or" relationship. "At least one" in this application refers to one or more; "multiple" refers to two or more. Furthermore, it should be understood that in the description of this application, terms such as "first," "second," and "third" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or order.

[0080] The wireless resource identification method provided in this application can be applied to fourth-generation (4G) communication systems, such as Long Term Evolution (LTE) systems; it can also be applied to fifth-generation (5G) communication systems, such as 5G New Radio (NR); or to various future communication systems, such as sixth-generation (6G) communication systems, and can also be applied to Bluetooth systems, WiFi systems, LoRa systems, or vehicle-to-everything (V2X) systems. The method provided in this application can also be applied to satellite communication systems, wherein the satellite communication system can be integrated with the aforementioned communication systems.

[0081] To facilitate understanding of the embodiments of this application, Figure 1 The application scenario used in this application is illustrated using the communication system architecture shown below. (See also...) Figure 1 As shown, the communication system 100 includes a network device 101 and a terminal device 102. The apparatus provided in this application embodiment can be applied to the network device 101 or to the terminal device 102. It is understood that... Figure 1 This application only illustrates one possible communication system architecture that can be applied to an embodiment of the present application. In other possible scenarios, the communication system architecture may also include other devices.

[0082] Network device 110 is a node in a radio access network (RAN), also known as a base station or RAN node (or device). Examples of current access network devices 101 include: gNB / NR-NB, transmission reception point (TRP), evolved Node B (eNB), radio network controller (RNC), Node B (NB), basestation controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved Node B, or home Node B, HNB), base band unit (BBU), or wireless fidelity (Wi-Fi) access point (AP), satellite equipment, or network devices in 5G communication systems, or network devices in future communication systems. Network device 110 can also be other devices with network device functions; for example, network device 110 can also function as a network device in D2D communication, vehicle-to-everything (V2X) communication, or machine-to-machine (M2M) communication. Network device 110 could also be a network device in a future communication system.

[0083] In some deployments, a gNB may include a centralized unit (CU) and a DU. A gNB may also include a radio unit (RU). The CU implements some of the gNB's functions, and the DU implements others. For example, the CU implements radio resource control (RRC) and packet data convergence protocol (PDCP) layer functions, while the DU implements radio link control (RLC), media access control (MAC), and physical (PHY) layer functions. Since RRC layer information ultimately becomes PHY layer information, or is derived from PHY layer information, in this architecture, higher-layer signaling, such as RRC or PDCP layer signaling, can be considered to be sent by the DU, or by the DU+RU. It is understood that network devices can be CU nodes, DU nodes, or devices including both CU and DU nodes. Furthermore, the CU can be classified as a network device in the access network (RAN) or a network device in the core network (CN); this is not a limitation.

[0084] Terminal equipment 102, also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc., is a device that provides voice or data connectivity to users, and can also be an Internet of Things (IoT) device. For example, terminal equipment includes handheld devices with wireless connectivity, vehicle-mounted devices, etc. Currently, terminal devices can include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices (such as smartwatches, smart bracelets, pedometers, etc.), in-vehicle devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, or wireless terminals in smart homes, and flying equipment (such as smart robots, hot air balloons, drones, airplanes), etc. The terminal device can also be other devices with terminal functions. For example, the terminal device can also be a device that performs terminal functions in D2D communication. In this application, the terminal device with wireless transceiver function and the chip that can be set in the aforementioned terminal device are collectively referred to as terminal device.

[0085] In wireless communication systems, identifying wireless resources allows terminal devices and network devices to determine uplink or downlink transmission resources. In this embodiment, wireless resources include resources used for uplink or downlink transmission. Wireless resources can include resources with multiple dimensions, such as time domain, frequency domain, code domain, polarization, antenna (spatial) domain, or OAM mode domain.

[0086] The following example illustrates the method for identifying wireless resources.

[0087] In one embodiment, taking Table 1 as an example, the fifth-generation (5G) communication system supports a method for identifying the subcarrier spacing and radio resources of dynamic orthogonal frequency division multiplexing (OFDM).

[0088] Table 1

[0089] 0 15 normal 1 30 normal 2 60 normal, extended 3 120 normal 4 240 normal

[0090] As shown in Table 1, 5G identifies different OFDM subcarrier spacings from 15kHz to 240kHz as μ = 0, 1, 2, 3, 4, each corresponding to a cyclic prefix of different lengths. This radio resource identification method sets a flexible and expandable parameter set, enabling 5G to support the flexibility of deploying multiple services simultaneously. In different application scenarios, network devices dynamically select the subcarrier spacing and cyclic prefix configuration in Table 1 based on the multipath latency of the radio channel and the latency requirements of the communication service.

[0091] like Figure 2 As shown, in the frequency domain, 12 consecutive subcarriers corresponding to resource elements (REs) form a resource block (RB). This can be represented using (k, l). ρ,μ Identify RE, (k,l) ρ,μ Specifically, it refers to the k-th frequency domain symbol and l-th time domain symbol of the ρ-th antenna port relative to the reference point under the μ-th OFDM transmission parameter configuration.

[0092] The wireless resource identification method provided in this application embodiment can identify wireless resources with OAM modal domain dimension.

[0093] To better understand the method of this application, we will first introduce the OAM modal domain and some other terms or concepts involved in this application.

[0094] OAM (Optical Aspect Ratio) is an inherent property of electromagnetic waves, corresponding to the spiral phase wavefront of a beam in space. Electromagnetic waves carrying different OAM states are orthogonal to each other when propagating coaxially in space. Therefore, theoretically, modulating different information onto electromagnetic waves with different OAM states for multiplexing can increase the channel capacity of wireless communication systems.

[0095] Generating OAM beams using antenna arrays is a relatively convenient method for generating OAM beams. An antenna array refers to two or more individual antennas operating at the same frequency, arranged and fed according to certain requirements to form an antenna array, also called an antenna array. The antenna radiating elements that constitute an antenna array are called array elements. Antenna arrays include transmitting antenna arrays and receiving antenna arrays. The structures of antenna arrays include uniform circular arrays (UCA), uniform linear arrays (ULA), etc. In the embodiments of this application, the structure of the antenna array is not limited.

[0096] OAM states, also known as OAM physical modes or physical OAM modes, are an inherent property of electromagnetic waves. OAM states can be any integer, such as -1, 1, 2, 3, etc., or they can be a one-dimensional array of integers. The number of OAM states included in a one-dimensional array is not limited, such as a finite number like [-2, -1, 1, 2], or the number of OAM states can be unlimited. In practical applications, it can be a combination that includes both the transmitted and received OAM states, or one combination that includes the transmitted OAM state and another combination that includes the received OAM state. Generally, OAM states are integers.

[0097] Based on the concept of OAM physical modes, the OAM modes involved in the embodiments of this application can be understood as OAM logical modes. Unlike OAM physical modes, OAM logical modes can be not only integers but also fractions. In the embodiments of this application, OAM logical modes can also be called OAM mode domain identifiers. Wherein, any number of waveform symbols transmitted through the same OAM mode domain identifier traverse the same vortex electromagnetic wave channel. Based on this, OAM mode domain identifiers can also be called OAM mode domain ports. The definition method of OAM mode domain ports is similar to the definition method of antenna ports in the 5G NR standard. An OAM mode domain port is defined as follows: when a waveform symbol is transmitted through a mode port, the vortex electromagnetic wave channel it traverses is the same as the vortex electromagnetic wave channel traversed by other waveform symbols transmitted through that OAM mode domain port. In other words, the terminal considers whether two transmitted signals traverse the same vortex electromagnetic wave channel to depend on whether the two signals are transmitted through the same OAM mode domain port. Similarly, the OAM mode domain port is a logical concept and does not correspond to a specific OAM physical mode or physical antenna array.

[0098] Transmission parameters characterize the channel characteristics of electromagnetic waves, or in other words, they measure the performance of electromagnetic wave communication. In this embodiment, transmission parameters can be any parameter that characterizes the performance of an electromagnetic wave signal. For example, transmission parameters can be any combination of one or more of the following: signal-to-noise ratio (SNR), reference signal received power (RSRP), bit error rate (BER), block error rate (BRR), packet error rate (PER), number of failed retransmissions, or successful transmission delay. The description of transmission parameters can be applied to plane electromagnetic waves and vortex electromagnetic waves of any OAM physical mode.

[0099] Plane electromagnetic waves can be considered as vortex electromagnetic waves with OAM physical modes of 0.

[0100] like Figure 3 As shown below, the method for identifying wireless resources provided in the embodiments of this application will be described.

[0101] S301, Network devices determine OAM mode domain information.

[0102] The OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave in a first OAM physical mode. Alternatively, the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter of a vortex electromagnetic wave in a first OAM physical mode and a reference value, where the reference value includes the transmission parameters of a plane electromagnetic wave, or the reference value includes the transmission parameters of a vortex electromagnetic wave in a specified OAM physical mode among multiple OAM physical modes.

[0103] S302. The network device sends the OAM mode domain information to the terminal device, and the terminal device receives the OAM mode domain information from the network device.

[0104] S303. The terminal device determines the radio resources used for uplink or downlink transmission based on the OAM mode domain information.

[0105] Figure 3 In this embodiment, OAM mode domain identifiers can be used to determine radio resources. OAM mode domain identifiers are related to the transmission parameters of vortex electromagnetic waves and can be regarded as OAM logical modes. Compared with the method of determining radio resources using OAM physical modes, it is more universal and avoids the influence of physical antenna arrays and OAM physical modes on the logic of higher-layer communication protocols.

[0106] The following is about Figure 3 Some optional implementations of the embodiments are illustrated by examples.

[0107] First, let's introduce the method by which network devices determine the OAM mode domain identifier, specifically as follows: Figure 4 As shown.

[0108] S401. The network device sends a reference electromagnetic wave to the terminal device, and the terminal device receives the reference electromagnetic wave from the network device.

[0109] The reference electromagnetic wave is either a plane electromagnetic wave signal or a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes. Multiple OAM physical modes refer to the OAM physical modes of the multiple OAM test signals that the network device is about to send.

[0110] For example, a reference electromagnetic wave can be a reference signal (RS).

[0111] S402. The terminal equipment determines the transmission parameters of the reference electromagnetic wave.

[0112] The transmission parameters of the reference electromagnetic wave may include any one or a combination of the following: SNR, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay. This application uses signal-to-noise ratio as an example. These transmission parameters of the reference electromagnetic wave can serve as reference values ​​for determining the OAM mode domain identifier.

[0113] The terminal equipment can also determine the direction of arrival (DOA) of the reference electromagnetic wave.

[0114] S403. The terminal device sends a feedback signal of a reference electromagnetic wave to the network device, and the network device receives the feedback signal of the reference electromagnetic wave from the terminal device.

[0115] The feedback signal of the reference electromagnetic wave carries the transmission parameters of the determined reference electromagnetic wave.

[0116] For example, the feedback signal of the reference electromagnetic wave can be a channel state information (CSI) report. S404, the network device sends first indication information to the terminal device via the reference electromagnetic wave, and the terminal device receives the first indication information from the network device.

[0117] The first indication information is used to indicate the order of the OAM physical modes of the OAM test signal that the network device is about to send. For example, the first indication information indicates that the OAM physical modes of the OAM test signal that the network device is about to send are [+1, -1, +2, -2, +3, ...]. S405, the terminal device sends capability information to the network device, and the network device receives the capability information from the terminal device.

[0118] This capability information may include one or more of the following: supported OAM physical modes or the number of antenna arrays on the terminal device. The number of antenna arrays on the terminal device can be used by the network device to determine the OAM physical modes supported by the terminal device. This capability information may also include antenna aperture.

[0119] For example, this capability information could be a CSI report.

[0120] S404 and S405 are optional steps. In practical applications, the order of vortex electromagnetic waves in multiple OAM mode domains can also be determined in other ways. For example, the OAM physical modes can be predefined as [+1,-1,+2,-2,+3,…].

[0121] S405 can also be omitted, and only S404 needs to be executed. Regardless of which OAM physical modes the terminal supports, the network device can send OAM test signals in the order it determines.

[0122] The order of S404 and S405 is not limited and can be interchanged. For example, if S405 is executed first, then the network device in S404 can determine the order of the OAM physical modes of the OAM test signal to be sent according to the capability information of the terminal device in S404.

[0123] S406. Network devices determine the beam spread angle φ of different OAM physical modes locally on the network device. l .

[0124] The beam spread angle φ can be determined according to the following formula (1). l .

[0125]

[0126] Among them, R t λ is the local antenna aperture of the network device, and λ is the carrier wavelength, which is related to the carrier frequency of the transmitted signal.

[0127] The network device can sequentially calculate the beam spread angle φ of different OAM physical modes l locally, according to the order of the OAM physical modes indicated by the first instruction information in S404. l .

[0128] S407. The network device sends vortex electromagnetic waves in multiple OAM physical modes to the terminal device, and the terminal device receives vortex electromagnetic waves in multiple OAM physical modes from the network device.

[0129] Network devices can transmit vortex electromagnetic waves of multiple OAM physical modes in a certain order. For example, multiple vortex electromagnetic waves of multiple OAM physical modes can be transmitted sequentially according to the order of OAM physical modes indicated by the OAM mode sequence indication information in S404. Alternatively, the order of OAM physical modes indicated by the OAM mode sequence indication information in S404 is recorded as the first order. The network device can combine the terminal capability information obtained in S405 to determine the OAM physical modes supported by the terminal in the first order and determine the second order of OAM physical modes. The OAM physical modes included in the second order are all modes supported by the terminal device. For example, if the OAM mode sequence indication information indicates that the OAM physical modes of the OAM test signal to be transmitted by the network device are [+1, -1, +2, -2, +3, ...], and the terminal device capability information indicates that the OAM physical modes supported by the terminal do not include [+2, -2], then the network device determines the second order of OAM physical modes to be [+1, -1, +3, -3, ...].

[0130] S408. The terminal device determines the transmission parameters of the vortex electromagnetic wave under the multiple OAM physical modes, obtains multiple transmission parameters, and the multiple transmission parameters correspond one-to-one with the multiple OAM physical modes.

[0131] One OAM physical mode can correspond to multiple types of transmission parameters. The transmission parameters of the vortex electromagnetic wave under these multiple OAM physical modes can include any one or any combination of the following: signal-to-noise ratio (SNR), reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay. This application uses SNR as an example for illustration. The SNR of OAM physical mode 1 can be denoted as SNR. l .

[0132] S409. The terminal device feeds back the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes to the network device, and the network device receives the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes fed back by the terminal device.

[0133] S410. The network device sequentially sends multiple mixed waves to the terminal device, and the terminal device receives the multiple mixed waves from the network device. Among them, the multiple mixed waves correspond one-to-one with multiple OAM physical modes, and each mixed wave is a mixture of vortex electromagnetic waves and plane electromagnetic waves under the corresponding OAM physical mode.

[0134] Network devices can sequentially transmit multiple hybrid waveforms to terminal devices in a specific order. This specific order can be the first order of OAM physical modes indicated by the OAM mode sequence instruction information in S404, or the second order of OAM physical modes. Specific design details for the first and second orders can be found in S407.

[0135] S411. The terminal equipment sequentially determines the transmission parameters of the vortex electromagnetic wave in the l-th OAM physical mode and its crosstalk coefficient γ with the reference electromagnetic wave from the l-th mixed wave. l .

[0136] Assuming there are M physical modes of OAM, the value of l can range from 0 to (M-1) or from 1 to M. The terminal device can determine the crosstalk coefficient γ according to the order of l values ​​from largest to smallest, smallest to largest, or any other possible order. l .

[0137] Taking the signal-to-noise ratio (SNR) as the transmission parameter, the SNR of the vortex electromagnetic wave in the l-th OAM physical mode is denoted as: The calculation method for the crosstalk coefficient is shown in formula (2).

[0138]

[0139] In formula (2), vortex wave refers to vortex electromagnetic wave, and the measured new energy is the transmission parameter.

[0140] S412. The terminal device feeds back the crosstalk coefficient for each OAM physical mode determined in S411 to the network device. It can also feed back the transmission parameters for each OAM physical mode determined in S411 to the network device. The network device receives the crosstalk coefficient from the terminal device.

[0141] For example, the terminal device feeds back the signal-to-noise ratio (SNR) of the l-th OAM physical mode determined by S411 to the network device. l * and crosstalk coefficient γ l .

[0142] S413. The network device determines the ratio ζ of the vortex electromagnetic wave transmission parameters to the reference electromagnetic wave transmission parameters in each OAM physical mode, and obtains multiple ratios corresponding to multiple OAM physical modes.

[0143] The transmission parameters of the reference electromagnetic wave are used as reference values ​​and can be determined based on the feedback signal from the terminal equipment in S403. Taking a plane electromagnetic wave as the reference electromagnetic wave and the signal-to-noise ratio (SNR) as the transmission parameter, the SNR of the plane electromagnetic wave is denoted as SNR0. Then ζ can be expressed according to formula (3). In formula (3), ζ is the SNR of the vortex electromagnetic wave under OAM physical mode l. l The ratio of the SNR0 of a plane electromagnetic wave to the SNR0 of a plane electromagnetic wave.

[0144]

[0145] In formula (3), vortex wave is vortex electromagnetic wave, plane wave is plane electromagnetic wave, and performance measurement is transmission parameter.

[0146] S414. The network device sorts the multiple ratios ζ obtained in S413 to obtain multiple sorting numbers.

[0147] The sorting sequence can follow any sorting rule, such as sorting from largest to smallest, smallest to largest, odd or even, modulo operation, or weighted sorting, or any combination of one or more of these rules.

[0148] S415. The network device generates multiple OAM modal domain identifiers according to the multiple sorting numbers obtained in S414.

[0149] In this embodiment, the multiple OAM modality domain identifiers generated by the network device can be represented in the form of a list or in other ways. This embodiment uses a list format as an example for illustration, using an OAM modality domain identifier list to represent multiple OAM modality domain identifiers. When referring to an OAM modality domain identifier list, it is intended to express multiple OAM modality domain identifiers generated by the network device through interaction with the terminal device. These multiple OAM modality domain identifiers correspond to multiple OAM physical modes, which may be supported by the terminal device, the network device, or both. The OAM modality domain identifier list can be generated online or pre-stored.

[0150] Multiple OAM mode field identifiers correspond one-to-one with multiple sorting numbers, which in turn correspond one-to-one with multiple ratios ζ, and these ratios ζ correspond one-to-one with multiple OAM physical modes. An OAM mode field identifier can be considered a sorting number, which can be a natural number, such as 0, 1, 2, 3, etc. Alternatively, it can be considered a ratio ζ, which can be an integer, a fraction, an integer value, or a floating-point value. It can be seen that the OAM mode field identifier does not directly represent the OAM physical mode, but rather reflects the channel performance of the vortex electromagnetic wave under the OAM physical mode, corresponding to the transmission parameters of the vortex electromagnetic wave under the OAM physical mode.

[0151] When sorting the comparison values ​​ζ, if multiple equal ratios ζ happen to be equal, the ratios can be sorted randomly, or they can be sorted according to the rule that the ratio with the smaller number of OAM physical modes is ranked first, or they can be sorted according to the rule that positive numbers are ranked first compared to negative numbers, or a combination of two sorting rules can be used.

[0152] In this embodiment, one OAM modality domain identifier may correspond to one or more OAM physical modes. When multiple equal ratios ζ happen to be equal, if the multiple equal ratios ζ are sorted according to a set rule, it can be guaranteed that one OAM modality domain identifier corresponds to one OAM physical mode. Optionally, multiple equal ratios ζ can also be assigned to the same sorting number, that is, to the same OAM modality domain identifier, so that one OAM modality domain identifier corresponds to multiple OAM physical modes. In any case, using OAM modality domain identifiers does not reduce the number of usable OAM physical modes.

[0153] The OAM modal domain identifier is represented by the letter m, where m = [1,2,3,…] or m = [0,1,2,3,…]. The OAM modal domain identifier 0 can correspond to a plane electromagnetic wave.

[0154] For example, the correspondence between logical OAM identifier m and OAM physical modes is shown in Table 2. Serial number 0 is not shown in Table 2; serial number 0 can be a plane electromagnetic wave.

[0155] Table 2

[0156]

[0157] These multiple OAM mode domain identifiers can also be referred to as multiple OAM mode domain ports. One OAM mode domain identifier may correspond to one or more OAM physical modes. For example, in the logical OAM identifier sequence table shown in Table 2, for OAM physical modes l1 and l4, regardless of the physical technology used, such as whether the same or different transmit power is allocated to OAM physical modes l1 and l2, whether the same or different antenna arrays are used, or whether the same or different propagation paths are used, as long as these two OAM physical modes l1 and l4 correspond to the same OAM mode domain identifier m=1, then l1 and l4 are considered to belong to the same OAM mode domain identifier or OAM mode domain port.

[0158] Optionally, the network device can also establish the OAM mode domain identifier m and the beam spread angle φ. m Furthermore, a correspondence can be established between the OAM modal domain identifier m and the crosstalk coefficient γ. m Alternatively, simultaneously establish the correspondence between the OAM modal domain identifier m and the beam spread angle φ. m and crosstalk coefficient γ m The correspondence is established. Through this correspondence, the crosstalk coefficient γ can be used to determine the relationship. m Or crosstalk coefficient γ m To characterize some features of the OAM modal domain identifier m.

[0159] For example, the correspondence between the logical OAM identifier m, beam spread angle, crosstalk coefficient, and OAM physical mode is shown in Table 3. Serial number 0 can represent a plane electromagnetic wave, but serial number 0 is not shown in Table 3.

[0160] Table 3

[0161]

[0162] These multiple OAM mode domain identifiers can also be referred to as multiple OAM mode domain ports. One OAM mode domain identifier may correspond to one or more OAM physical modes. In the logical OAM identifier sequence table shown in Table 3, for OAM physical modes l1 and l4, regardless of the physical technology used, such as whether the same or different transmit power is allocated to OAM physical modes l1 and l4, whether the same or different antenna arrays are used, or whether the same or different propagation paths are used, as long as these two OAM physical modes l1 and l4 correspond to the same OAM mode domain identifier m, beam spread angle φ, and crosstalk coefficient γ, or as long as the error of the OAM mode domain identifier m, beam spread angle φ, and crosstalk coefficient γ obtained by these two OAM physical modes l1 and l2 is less than a certain tolerable threshold value, then l1 and l2 are regarded as belonging to the same OAM mode domain identifier or OAM mode domain port.

[0163] S406 is an optional step. If S406 is omitted, the network device may not need to establish the OAM mode domain identifier m and beam spread angle φ. m The correspondence can be established, for example, network devices can establish only the OAM modal domain identifier m and the crosstalk coefficient γ. m The correspondence.

[0164] S410~S412 are for obtaining the crosstalk coefficient γ l The process is optional and can be omitted. If S410 to S412 are omitted, the network device does not need to establish the OAM mode domain identifier m and crosstalk coefficient γ. m The correspondence can be established, for example, by establishing only the OAM mode domain identifier m and the beam spread angle φ. m The correspondence.

[0165] S406 can also be omitted, as can S410 to S412.

[0166] S413–S415 are the processes for generating multiple OAM mode domain identifiers. In one possible implementation, the network device can directly sort the vortex electromagnetic wave transmission parameters under multiple OAM physical modes to obtain multiple sorting numbers, and generate multiple OAM mode domain identifiers according to these sorting numbers. The sorting of the vortex electromagnetic wave transmission parameters under multiple OAM physical modes can also follow any sorting rule, such as any one or a combination of the following rules: descending order, ascending order, odd / even numbers, modulo operation, or weighted sorting. This eliminates the need for S401–S403, which involves obtaining the transmission parameters of the reference electromagnetic wave. This method of obtaining OAM mode domain identifiers is simpler, and the method of obtaining OAM mode domain identifiers according to S413–S415 references the reference electromagnetic wave, resulting in more accurate results.

[0167] In this application embodiment, the OAM mode domain identifier can be an integer, such as ±1, ±2, ..., or a fraction or decimal, such as +1.25, -3.5, ... . The OAM mode domain identifier can be mapped to the case of fractional OAM modes. Therefore, the OAM mode domain identifier in this application embodiment is more flexible. Furthermore, this application embodiment does not require that the antenna array specifications of the transmitting and receiving ends be identical, making it applicable to scenarios where the antenna array specifications of the transmitting and receiving ends are inconsistent. This application embodiment also does not require that the antenna array specifications of different OAM modes be identical, making it applicable to scenarios where the antenna array specifications of different OAM modes differ. This application embodiment is more universal and flexible.

[0168] In summary, the OAM mode domain identifier in this application can shield the influence of physical antenna arrays and physical OAM modes on higher-layer communication protocol logic. Furthermore, by using performance metrics such as signal-to-noise ratio for calculations and using the converted logical mode as a scheduling reference, the versatility and flexibility of the scheduling algorithm are greatly increased.

[0169] It should be noted that, Figure 4 This example illustrates a method for a network device to determine the OAM modality domain identifier. In practical applications, the network device can generate the OAM modality domain identifier online or generate it in advance and store it locally. The network device can query the pre-stored OAM modality domain identifier to determine which OAM modality domain information to send to the terminal.

[0170] based on Figure 4 In this example, the method for determining the OAM mode domain identifier of a network device will be described in further detail through a specific application scenario. In this application scenario, the reference electromagnetic wave is a plane electromagnetic wave, and the transmission parameter is the signal-to-noise ratio.

[0171] like Figure 5As shown, assume the network device's antenna array is deployed in four concentric circles, with 16 antenna elements evenly spaced in each circle. The terminal device has only one circle of 16 antenna elements. The radii of the concentric circles of the network device from the inside out are denoted as R1, R2, R3, and R4. The network device is configured to use four OAM physical modes: +1, +3, +5, and +7. The innermost antenna element transmits OAM physical mode +1, and the antenna elements from the innermost to the outermost circle transmit OAM physical modes +3, +5, and +7 respectively. Both the network device and the terminal device communicate using 28 GHz radio waves, corresponding to a wavelength of λ = 1 cm. A line-of-sight (LOS) path channel is possible between the network device and the terminal device.

[0172] like Figure 6 As shown, in Figure 5 Based on the antenna array, the process for determining the OAM mode domain identifier by the network device is as follows.

[0173] S601. The network device uses the innermost antenna array to send a plane electromagnetic wave signal S0 to the terminal device according to the power P0, and the terminal device receives the plane electromagnetic wave signal S0.

[0174] S602. The terminal equipment determines the signal-to-noise ratio (SNR0) of the plane electromagnetic wave signal S0.

[0175] The terminal equipment can also determine the angle of arrival (DOA0) of the planar electromagnetic wave signal S0.

[0176] S603. The terminal device sends a feedback signal carrying signal-to-noise ratio (SNR) information to the network device. The network device receives the feedback signal from the terminal device and records the plane electromagnetic wave signal-to-noise ratio information carried by the feedback signal.

[0177] The feedback signal can also carry the angle of arrival (DOA0). Network devices can also record this angle of arrival information.

[0178] S604. The network device sends the OAM physical mode sequence of the OAM test signal that the network device is about to send to the terminal device via a plane electromagnetic wave [+1,+5,+7,+3].

[0179] It is understandable that the order of the OAM physical modes here is not necessarily increasing or decreasing; it may also be out of order.

[0180] S605. After receiving the order information of the OAM physical modes, the terminal device sends an acknowledgment message to the network device and reports its capability information. The network device receives the capability information from the terminal device.

[0181] The terminal device capability information here may include: the number of antenna elements of the terminal device or the OAM physical modes that the terminal device supports for transmission and reception. This capability information may also include the antenna aperture.

[0182] For example, assuming that the terminal device only supports the OAM physical mode [+1,+3,+5], the acknowledgment message sent by the terminal device to the network device can indicate that the terminal device's capability is [+1,+5,N / A,+3].

[0183] After receiving this capability information, the network device will send OAM test signals for the OAM physical modes [+1,+5,+3] in sequence in the following process, while discarding the +7 mode.

[0184] S606. Network devices calculate the beam spread angle φ of different OAM physical modes locally in the order of [+1, +5, +3]. +1 ,φ +5 ,φ +3 .

[0185] Based on the aforementioned mapping relationship between modes and the inner and outer rings of the emission system, and formula (1) above, we can conclude that:

[0186] and

[0187] S607. The network device sends vortex electromagnetic waves of different OAM physical modes to the terminal device in the order of [+1,+5,+3], and the terminal device receives multiple vortex electromagnetic waves from the network device.

[0188] S608, The terminal device determines the signal-to-noise ratio of the vortex electromagnetic waves under the multiple OAM physical modes.

[0189] Terminal equipment according to classic The signal-to-noise ratio (SNR) of the vortex electromagnetic wave in the l-th OAM physical mode was detected sequentially using the inverse phase gradient method. l .

[0190] S609, The terminal device feeds back the signal-to-noise ratio (SNR) corresponding to each OAM physical mode to the network device. l The network device receives the signal-to-noise ratio (SNR) for each OAM physical mode from the terminal device. l .

[0191] If the angle of arrival (DOA) of the vortex electromagnetic waves from a network device differs when they reach different terminal devices, then even the same OAM physical mode will be detected with different signal-to-noise ratios on different terminal devices.

[0192] S610: The network device, in the order of [+1, +5, +3], sequentially transmits vortex electromagnetic waves of different OAM physical modes to the terminal device using corresponding antenna elements and power P0. Simultaneously, for each OAM physical mode vortex electromagnetic wave, a plane electromagnetic wave S0 is transmitted using the innermost antenna element and the same power P0. The vortex electromagnetic wave and plane electromagnetic wave of each OAM physical mode form a mixed wave. The terminal device receives multiple mixed waves from the network device.

[0193] For example, a vortex electromagnetic wave with a physical mode of +1 is denoted as S. +1 The corresponding mixed wave

[0194] S611 and terminal equipment sequentially from hybrid wave Extracting and detecting the signal-to-noise ratio of different OAM physical modes Furthermore, the crosstalk coefficient γ between the vortex electromagnetic wave and the plane electromagnetic wave of this physical mode is calculated according to formula (2). l .

[0195] S612, The terminal device feeds back the signal-to-noise ratio corresponding to each OAM physical mode to the network device. and crosstalk coefficient γ l .

[0196] S613. The network device generates a list of OAM mode domain identifiers, which includes multiple entries. Each entry corresponds to an OAM mode domain identifier, a crosstalk coefficient, and a beam spread angle.

[0197] Optionally, in method 1, the OAM modal domain identifier is generated using relative SNR. That is, the identifiers are sorted according to the ratio ζ of the vortex electromagnetic wave signal-to-noise ratio to the plane electromagnetic wave signal-to-noise ratio under the OAM physical mode. The ratio ζ is calculated as shown in formula (3). The plane electromagnetic wave is denoted as the starting number 0 and arranged in descending order of the ratio ζ. Optionally, in method 2, the OAM modal domain identifier is generated using absolute SNR. The identifiers are sorted according to the magnitude of the vortex electromagnetic wave signal-to-noise ratio under the OAM physical mode, and the OAM modal domain identifiers are generated according to the sorting results.

[0198] Regardless of whether it's method 1 or method 2, let's assume the sorting result is ζ. +1 >ζ +5 >ζ +3 The OAM mode domain identifiers are generated by incrementing the starting sequence number upwards. The beam spread angle and crosstalk coefficient corresponding to each OAM mode domain identifier are established, and the final generated logical OAM identifier sequences are shown in Table 4. Sequence number 0 is not shown in Table 4; sequence number 0 can be a plane electromagnetic wave.

[0199] Table 4

[0200]

[0201] In this embodiment of the application, an OAM modality domain identifier may correspond to one or more OAM physical modes. It is assumed that an OAM modality domain identifier corresponds to multiple OAM physical modes.

[0202] In the logical OAM identifier table shown in Table 2, for any two OAM physical modes l1 and l2, regardless of the physical techniques used, such as allocating the same or different transmit power, using the same or different antenna arrays, or using the same or different propagation paths, as long as these two OAM physical modes l1 and l2 correspond to the same OAM mode domain identifier m, beam spread angle φ, and crosstalk coefficient γ, or as long as the error of obtaining the OAM mode domain identifier m, beam spread angle φ, and crosstalk coefficient γ for these two OAM physical modes l1 and l2 is less than a certain tolerable threshold value, then l1 and l2 are considered to belong to the same OAM mode domain identifier or OAM mode domain port.

[0203] based on Figure 4 In this embodiment, the method for determining the OAM mode domain identifier of network devices will be described in further detail through a specific application scenario two. In this application scenario, the reference electromagnetic wave is a plane electromagnetic wave, and the transmission parameter is the signal-to-noise ratio.

[0204] like Figure 7 As shown, assuming the network device's antenna array is deployed in one ring, with N antenna elements in each ring, and N is taken as 16, the 16 antenna elements in each ring are arranged at equal intervals.

[0205] Network devices can generate OAM vortex electromagnetic waves in accordance with the following formula (4).

[0206]

[0207] Where, p n s0(t) represents the power allocated to the nth antenna element, s0(t) is the signal to be transmitted carried by the plane electromagnetic wave, l is the number of OAM physical modes, x(t) is the vortex electromagnetic wave signal of the generated lth OAM physical mode, and N is the number of antenna elements per revolution.

[0208] The value of l can be an integer, a fraction, or a decimal. For example... For example, Substituting a fractional value of l into formula (6) can generate vortex electromagnetic waves. Compared to l being an integer, a fractional value of l can improve the ability to counteract wireless multipath channel effects.

[0209] In some technologies, the OAM physical mode is directly used as an OAM index to identify radio resources. These technologies either do not support fractional OAM physical modes or mix fractional and integer OAM physical modes together to identify radio resources. The OAM mode domain identifier provided in this application can support fractional OAM physical modes.

[0210] like Figure 8 As shown, in Figure 7 Based on the antenna array, the process for determining the OAM mode domain identifier by the network device is as follows.

[0211] S801. The network device sends a plane electromagnetic wave signal S0 to the terminal device with power P0, and the terminal device receives the plane electromagnetic wave signal S0 from the network device.

[0212] S802, The terminal equipment determines the signal-to-noise ratio (SNR0) of the plane electromagnetic wave signal S0.

[0213] The terminal equipment can also determine the angle of arrival (DOA0) of the planar electromagnetic wave signal S0.

[0214] S803. The terminal device sends a feedback signal carrying signal-to-noise ratio (SNR) information to the network device. The network device receives the feedback signal from the terminal device and records the plane electromagnetic wave signal-to-noise ratio information carried by the feedback signal.

[0215] The feedback signal can also carry the angle of arrival (DOA0). Network devices can also record this angle of arrival information.

[0216] S804. The network device sends a fractional form of OAM physical mode 1 vortex electromagnetic wave to the terminal device with power P0. The terminal device receives the fractional form of OAM physical mode 1 vortex electromagnetic wave from the network device.

[0217] S805, The terminal device determines the signal-to-noise ratio of the vortex electromagnetic wave under the fractional form of OAM physical mode l.

[0218] Terminal equipment according to classic The signal-to-noise ratio (SNR) of the vortex electromagnetic wave in OAM physical mode l was detected sequentially using the inverse phase gradient method. l .

[0219] S806. The terminal device sends the signal-to-noise ratio of the vortex electromagnetic wave in the fractional form of OAM physical mode 1 to the network device, and the network device receives the signal-to-noise ratio of the vortex electromagnetic wave in the OAM physical mode 1 from the terminal device.

[0220] S807, Network devices determine the OAM modality domain identifier.

[0221] Similar to S613, in an optional implementation 1, the ratio of signal-to-noise ratio ζ = SNR is used. l The OAM modal domain identifier is obtained by sorting the signals based on / SNR0; in another method 2, the OAM modal domain identifier is generated using absolute SNR. The signals are sorted according to the magnitude of the signal-to-noise ratio of the vortex electromagnetic waves under the OAM physical mode 1 in fractional form, and the OAM modal domain identifier is generated according to the sorting result.

[0222] In the embodiments of this application, reference can be made to Figure 6 The method of the illustrated embodiment determines the beam spread angle and crosstalk coefficient corresponding to each OAM mode domain identifier; repeated details will not be repeated.

[0223] It should be noted that, Figure 8 Examples and Figure 6 The difference between the embodiments is that the numerical types of the OAM physical modes are different. The steps can be referenced from each other, and the repeated parts will not be described again.

[0224] In one possible design, the OAM modality identifiers determined by the fractional form of the OAM physical modes can be compared and sorted with the OAM modality identifiers determined by the integer form of the OAM physical modes to finally obtain a unified OAM modality identifier, such as a unified OAM modality identifier sequence table.

[0225] It is understandable that fractional OAM physical modes and integer OAM physical modes may correspond to the same OAM mode domain identifier.

[0226] In this embodiment, the OAM physical mode is converted into an OAM mode domain identifier. The OAM physical mode can support both integer and fractional forms, thus providing a unified and universal method for identifying the mode domain and increasing the schedulable range of the wireless scheduling algorithm within the OAM mode domain. Combining fractional and integer OAM physical modes for comparison and sorting avoids the influence of hardware factors such as physical antenna arrays and the OAM physical mode value format on the mode domain identifier.

[0227] The above has been approved. Figures 4 to 8 This paper introduces possible implementations of how network devices determine the OAM modality domain identifier. A network device may determine multiple OAM modality domain identifiers; for example, it may determine a list of OAM modality domain identifiers. The following describes the possible implementation methods for determining the first OAM modality domain identifier to send to the terminal device from among these multiple identifiers.

[0228] When a network device allocates radio resources to a terminal device, the radio resources include the OAM mode domain. The network device can send OAM mode domain information to the terminal device to indicate the radio resources allocated to the terminal device.

[0229] The process by which a network device determines the first OAM mode domain identifier can be understood as the process of determining the radio resources allocated to the terminal. The network device can allocate radio resources to the terminal device according to the following allocation rules:

[0230] (1) For data of different priorities of the same terminal device, the higher the priority, the lower the OAM mode domain identifier corresponding to the allocated radio resources;

[0231] (2) For multiple terminal devices, each terminal device can identify multiple OAM mode domain identifiers. These multiple OAM mode domain identifiers can be a list, a set, or other representations. Taking an OAM mode domain identifier list as an example, when allocating radio resources to a terminal device, the resource with the lower OAM mode domain identifier in the OAM mode domain identifier list corresponding to that terminal device is given priority. When multiple terminal devices have the same resource corresponding to the preferred OAM mode domain identifier, the terminal device with lower priority sequentially increases the sequence number of the OAM mode domain identifier until a different resource is found. Here, the resource can be an OAM physical mode. For example, OAM modality identifier 1 is selected from OAM modality identifier list 1 for terminal device 1, and OAM modality identifier 2 is selected from OAM modality identifier list 2 for terminal device 2. The OAM physical modes corresponding to OAM modality identifier 1 and OAM modality identifier 2 are the same. Since terminal device 2 has a lower priority than terminal device 1, OAM modality identifier 3, OAM modality identifier 4, etc., which are in order higher than OAM modality identifier 2 in OAM modality identifier list 2 are selected for terminal device 2, until the OAM physical mode corresponding to the selected OAM modality identifier is different from the OAM physical mode corresponding to OAM modality identifier 1. Then, the OAM physical mode corresponding to the selected OAM modality identifier is selected as the resource of terminal device 2.

[0232] (3) If the data to be transmitted has the same priority, resources can be allocated layer by layer according to the OAM modal domain identifier from low to high, until all data to be transmitted is allocated or all resources used by the current layer of OAM are allocated. For example, starting from the smallest OAM modal domain identifier, the water filling algorithm is executed layer by layer on the time-frequency two-dimensional resources of each layer according to the order of the OAM modal domain identifier from small to large, until all data to be transmitted is allocated or all available time-frequency resources of the current layer are allocated. One OAM modal domain identifier corresponds to one layer. It should be noted that each layer of OAM modal domain identifier does not refer to the conventional OAM physical mode.

[0233] During the allocation of the next layer of OAM mode domain identifiers, the crosstalk factors of all previously allocated OAM mode domain identifiers to this layer's OAM mode domain identifier are taken into account as interference noise that must be considered when allocating OAM power at this layer. The required time-frequency resources and transmission power for the data stream to be transmitted are calculated until all data to be transmitted is allocated or all available time-frequency resources at this layer are allocated. If there is still data to be transmitted, the process continues to the next layer of OAM mode domain identifiers. The crosstalk factor is... Figure 4 The γ mentioned in the embodiments or the variant form obtained by second-order calculation based on γ.

[0234] The system is modeled as follows: input conditions, optimization objective, and constraints.

[0235] Input conditions: There are N data streams waiting to be sent, and the required transmission rate and allocated power for each data stream are denoted as R. n and p n ,n∈[1,N]. The set of schedulable resources of the system is (f,t,m). ρ,μ Where f∈[1,F] is the frequency domain identifier index, t∈[1,T] is the time domain identifier index, and m∈[1,M] is the modal domain identifier index. The total allowable power of the system is P. total .

[0236] Optimization goal:

[0237] Constraints: ∑p n ≤P total

[0238] p n ≥0, n=1,2,…,N

[0239]

[0240] Among them, h n,f,t,m δ represents the channel quality of the nth data stream at the f-th frequency, the t-th time slot, and the m-th logical OAM mode. n,f,t,m It is the identifier for whether the resource unit identified by the f-th frequency point, t-th time slot, and m-th logical OAM mode is allocated to the n-th data stream, and N0 is the Gaussian white noise power.

[0241] Wireless resources can be used for uplink or downlink transmission. The following describes the optional implementation methods for network devices to allocate wireless resources with OAM mode domain to terminal devices for uplink and downlink respectively.

[0242] Scenario 1: The network device allocates radio resources with the OAM mode domain to the terminal device, and the radio resources are used for downlink transmission.

[0243] In S302, the OAM mode field information sent by the network device to the terminal device can be carried in the downlink control information (DCI). The network device can also send multiple OAM mode field identifiers to the terminal device; for example, multiple OAM mode field identifiers can be represented in list form, with the network device sending the OAM mode field identifier list to the terminal device. These multiple OAM mode field identifiers are determined by the network device based on multiple OAM physical mode fields, and can be arranged according to... Figure 4 The specific implementation examples will be used to determine this.

[0244] Assuming multiple OAM physical modes are [+1+3+5], and their corresponding OAM mode domain identifiers are [1 3 2], and the downlink resource allocated by the network device to the terminal device corresponds to the first OAM mode domain identifier 2, then the network device sends a DCI carrying the first OAM mode domain identifier 2 to the terminal device, and also sends a list of the multiple OAM mode domain identifiers to the terminal device. Optionally, the network device sends [2 1 3 2] to the terminal device, indicating that the first OAM mode domain identifier is 2 and the multiple OAM mode domain identifiers are [1 3 2].

[0245] The first OAM modality identifier and the OAM modality identifier list can both be carried in the DCI, or they can be indicated separately in different messages. For example, a network device can indicate resources to a terminal device through the DCI, and the network device carries the OAM modality identifier list in the resources indicated by the DCI. The terminal device obtains the OAM modality identifier list from the resources indicated by the DCI.

[0246] Optionally, in this embodiment, the first OAM modal domain identifier can be one of multiple OAM modal domain identifiers, or it can be several of multiple OAM modal domain identifiers. The OAM modal domain information can indicate a single value among multiple OAM modal domain identifiers, or it can indicate a range of values. This range of values ​​can be represented by indicating the minimum and maximum values. For example, if multiple OAM physical modes are [+1+3+5], and the corresponding multiple OAM modal domain identifiers are [1 3 2], the OAM modal domain information can indicate [2], indicating that the first OAM modal domain identifier is [2] in [1 3 2]. The OAM modal domain information can also indicate that the minimum value is 1 and the maximum value is 3, or indicate that the range of values ​​is 1 to 3, indicating that the first OAM modal domain identifier can be [1], [2], or [3] in [1 3 2].

[0247] When a network device indicates a first OAM mode domain identifier, it means that the network device can send downlink data to the terminal device on the radio resource indicated by the first OAM mode domain identifier, and the terminal device can receive downlink data according to the radio resource indicated by the first OAM mode domain identifier. For example, if the first OAM mode domain identifier is [2] in [1 3 2], the network device sends downlink data to the terminal device on the radio resource with OAM mode domain identifier [2], and the terminal device can receive downlink data according to the radio resource indicated by OAM mode domain identifier [2]. As another example, if the first OAM mode domain identifier is [1], [2], or [3] in [1 3 2], the network device sends downlink data to the terminal device on the radio resource with OAM mode domain identifier [1], [2], or [3], and the terminal device can receive downlink data according to the radio resource indicated by OAM mode domain identifier [1], [2], or [3].

[0248] After receiving downlink data, the terminal device can send a response message to the network device. This response message can be an acknowledge (ACK) or negative acknowledge (NACK) instruction. ACK indicates that downlink data has been received. NACK indicates that retransmission is required. Based on the NACK response message, the network device determines that retransmission is necessary and then resends the OAM mode field information to the terminal, along with the downlink data. This OAM mode field information can be the same as or different from the previously sent information.

[0249] Scenario 2: The network device allocates radio resources with the OAM mode domain to the terminal device, and the radio resources are used for uplink transmission.

[0250] In S302, the OAM modality information sent by the network device to the terminal device can be carried in the uplink grant (UL-Grant). The network device can also send multiple OAM modality identifiers to the terminal device; for example, multiple OAM modality identifiers can be represented in list form, with the network device sending the OAM modality identifier list to the terminal device. These multiple OAM modality identifiers are determined by the network device based on multiple OAM physical modalities, and can be arranged according to... Figure 4 The specific implementation examples will be used to determine this.

[0251] When wireless resources are used for uplink transmission, the terminal device sends multiple test signals to the network device. Assume the multiple OAM physical modes corresponding to the test signals sent by the terminal are [+1+5+7+3], and the network device supports the OAM physical modes [+1+5N / A+3], where N / A indicates not supported. The multiple OAM physical modes [+1+5N / A+3] correspond to multiple OAM mode domain identifiers [1 3N / A 2]. The network device allocates uplink resources to the terminal device with the first OAM mode domain identifier 2. The network device then sends a UL-Grant carrying the first OAM mode domain identifier 2 to the terminal device, and also sends a list of these multiple OAM mode domain identifiers. Optionally, the network device sends [21 3N / A 2] to the terminal device, indicating that the first OAM mode domain identifier is 2 and the multiple OAM mode domain identifiers are [1 3N / A 2].

[0252] The first OAM modality identifier and the list of multiple OAM modality identifiers can both be carried in the UL-Grant, or they can be carried separately in different messages for indication.

[0253] Optionally, in this embodiment, the first OAM modal domain identifier can be one of multiple OAM modal domain identifiers, or it can be several of multiple OAM modal domain identifiers. The OAM modal domain information can indicate a single value among multiple OAM modal domain identifiers, or it can indicate a range of values. This range of values ​​can be represented by indicating the minimum and maximum values. For example, if multiple OAM physical modes are [+1+5N / A+3], and the corresponding multiple OAM modal domain identifiers are [1 3N / A 2], the OAM modal domain information can indicate [2], indicating that the first OAM modal domain identifier is [2] in [1 3N / A 2]; the OAM modal domain information can also indicate that the minimum value is 1 and the maximum value is 3, or indicate that the range of values ​​is 1 to 3, indicating that the first OAM modal domain identifier can be [1], [2] or [3] in [1 3 2].

[0254] When the network device indicates the first OAM mode domain identifier, it means that the uplink resource allocated by the network device to the terminal device is the radio resource indicated by the first OAM mode domain identifier. The terminal device can send uplink data according to the radio resource indicated by the first OAM mode domain identifier, and the network device can receive uplink data on the radio resource indicated by the first OAM mode domain identifier. For example, if the first OAM mode domain identifier is [2] in [1 3N / A 2], the terminal device sends uplink data to the network device on the radio resource indicated by the OAM mode domain identifier [2], and the network device receives uplink data on the radio resource indicated by the OAM mode domain identifier [2]. For example, if the first OAM mode domain is identified as [1], [2], or [3] in [1 3N / A 2], the terminal device sends uplink data to the network device on the radio resource identified as [1], [2], or [3] in the OAM mode domain, and the network device receives the uplink data on the radio resource indicated by [1], [2], or [3] in the OAM mode domain. The network device can return a response message for the uplink data to the terminal device, which can be an ACK or NACK message.

[0255] Optionally, the terminal device may also send a buffer status report (BSR) on the radio resources indicated by the first OAM modality identifier. The network device can determine based on the BSR whether it needs to continue allocating radio resources for uplink transmission to the terminal device. If so, the network device continues to send OAM modality information to the terminal device to indicate the uplink resources allocated to the terminal device; this OAM modality information may be the same as or different from the previously sent information. The terminal device continues to transmit uplink data according to the radio resources indicated by the OAM modality information allocated by the network device.

[0256] Optionally, before the network device sends the UL-Grant, the following steps may also be included: The terminal device sends a sounding reference signal (SRS) to the network device, and the network device measures the uplink channel quality based on the SRS. If the channel is good and there is a data transmission requirement, the network device will allocate uplink resources to the terminal device. The terminal device sends a scheduling request (SR) to the network device.

[0257] In S303, the terminal device determines the radio resources used for uplink or downlink transmission based on the OAM mode domain information. In an optional embodiment, the radio resources with the OAM mode domain may also include other dimensions, and the OAM mode domain can be combined with other dimensions to identify the radio resources. For example, the OAM mode domain can be combined with any one or more of the following dimensions to indicate the radio resources: time domain dimension, frequency domain dimension, code domain dimension, polarization dimension, or antenna (spatial) dimension.

[0258] This will be illustrated by taking the OAM modal domain combined with time and frequency domain dimensions to identify wireless resources as an example.

[0259] Table 4 shows the identification method of the parameter set, which combines the orthogonal frequency division multiplexing (OFDM) subcarrier spacing index μ with the OAM mode domain identifier m to form a two-dimensional identifier vector <μ,m>, and the value of the cyclic prefix is ​​determined by the two-dimensional identifier vector.

[0260] Table 4

[0261]

[0262] like Figure 9 The diagram illustrates a method for identifying resource elements. Given an antenna port ρ and a subcarrier spacing μ, a resource element is represented by (k, l, m). ρ,μ The identifier is defined as follows: k is the frequency domain identifier index, l is the time domain identifier index, and m is the OAM mode domain identifier.

[0263] In the embodiments provided above, the methods provided by the embodiments of this application have been described from the perspectives of network devices, terminal devices, and the interaction between network devices and terminal devices. In the foregoing embodiments, for the sake of simplicity, the network device receiving feedback from the terminal device, the network device determining the OAM transmission parameters, and the network device sending the OAM wave to the terminal device are the same device. However, in actual applications, they can be implemented by different network devices. In this case, it is necessary to transmit corresponding information between these network devices, such as transmitting received feedback information and / or determining transmission parameters through the X2 interface, etc., which will not be elaborated further.

[0264] To achieve the functions of the methods provided in the embodiments of this application, the network device and the terminal device may include hardware structures and / or software modules, implementing the above functions in the form of hardware structures, software modules, or a combination of hardware structures and software modules. Whether a particular function is executed in the form of hardware structures, software modules, or a combination of hardware structures and software modules depends on the specific application and design constraints of the technical solution.

[0265] like Figure 10As shown, based on the same technical concept, this application embodiment also provides a communication device 1000. The communication device 1000 can be a terminal device, a device within a terminal device, or a device compatible with a terminal device. In one design, the communication device 1000 may include modules corresponding to the methods / operations / steps / actions performed by the terminal device in the above method embodiments. These modules may be hardware circuits, software, or a combination of hardware circuits and software. In another design, the communication device 1000 may include an acquisition module 1001 and a determination module 1002.

[0266] The acquisition module 1001 is used to acquire orbital angular momentum (OAM) modal domain information, wherein the OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channel traversed by any number of waveform symbols when transmitted through resources with the same OAM modal domain identifier is the same.

[0267] The determination module 1002 is used to determine the radio resources used for uplink or downlink transmission based on the OAM mode domain information.

[0268] The communication device 1000 also includes:

[0269] Communication module 1003 is used to receive a first reference signal from the network device, wherein the first reference signal is the plane electromagnetic wave or the vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes;

[0270] The determining module 1002 is further configured to determine the reference value based on the first reference signal;

[0271] The communication module 1003 is also used to send the reference value to the network device.

[0272] The acquisition module 1001, the determination module 1002, and the communication module 1003 are also used to perform other operations by the terminal device in the above method embodiments, which will not be described in detail here.

[0273] like Figure 11As shown, based on the same technical concept, this application embodiment also provides a communication device 1100. The communication device 1100 can be a network device, a device within a network device, or a device compatible with a network device. In one design, the communication device 1100 may include modules corresponding to the methods / operations / steps / actions performed by the network device in the above method embodiments. These modules can be hardware circuits, software, or a combination of hardware circuits and software. In another design, the communication device 1100 may include a determining module 1101 and a communication module 1102.

[0274] The determining module 1101 is used to determine the orbital angular momentum (OAM) modal domain information, wherein the OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM modal domain identifier are transmitted through the same vortex electromagnetic wave channel;

[0275] The communication module 1102 is used to send the OAM modal domain information to the terminal device.

[0276] The determination module 1101 and the communication module 1102 are also used to perform other operations of the network device in the above method embodiment, which will not be described in detail here.

[0277] The module division in this embodiment is illustrative and represents only one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional modules in each embodiment of this application can be integrated into a single processor, exist as separate physical entities, or be integrated into a single module. The integrated modules described above can be implemented in hardware or as software functional modules.

[0278] like Figure 12The diagram shows a communication device 1200 provided in an embodiment of this application, used to implement the functions of a terminal device or network device in the above-described method. When implementing the functions of a network device, the device can be a network device, a device within a network device, or a device compatible with a network device. When implementing the functions of a terminal device, the device can be a terminal device, a device within a terminal device, or a device compatible with a terminal device. The device can be a chip system. In this embodiment, the chip system can be composed of chips or may include chips and other discrete devices. The communication device 1200 includes at least one processor 1220, used to implement the functions of a terminal device or network device in the method provided in this embodiment. The device 1200 may also include a communication interface 1210. In this embodiment, the communication interface can be a transceiver, circuit, bus, module, or other type of communication interface, used to communicate with other devices via a transmission medium. For example, the communication interface 1210 allows the device in the communication device 1200 to communicate with other devices. Exemplarily, when the communication device 1200 is a network device, the other device can be a terminal device. When the communication device 1200 is a terminal device, the other device may be a network device. The processor 1220 uses the communication interface 1210 to send and receive data and is used to implement the method described in the above method embodiments. For example, when implementing the functions of a terminal device, the processor 1220 is used to acquire orbital angular momentum (OAM) modal domain information, wherein the OAM modal domain information includes a first OAM modal domain identifier, the first OAM modal domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or, the first OAM modal domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameters of a plane electromagnetic wave or the transmission parameters of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channels traversed when any multiple waveform symbols are transmitted through resources with the same OAM modal domain identifier are the same; and to determine radio resources for uplink or downlink transmission based on the OAM modal domain information.

[0279] When implementing the functions of the network device, the processor 1220 is used to determine orbital angular momentum (OAM) modal domain information, wherein the OAM modal domain information includes a first OAM modal domain identifier, the first OAM modal domain identifier corresponding to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM modal domain identifier corresponding to a first ratio between the first transmission parameter and a reference value, the reference value including the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channel traversed by any number of waveform symbols when transmitted through the resource with the same OAM modal domain identifier is the same; the communication interface 1210 is used to send the OAM modal domain information to the terminal device.

[0280] The processor 1220 and the communication interface 1210 can also be used to execute other corresponding steps or operations performed by the terminal device or network device in the above method embodiments, which will not be described in detail here.

[0281] The communication device 1200 may further include at least one memory 1230 for storing program instructions and / or data. The memory 1230 is coupled to the processor 1220. The coupling in this embodiment is an indirect coupling or communication connection between devices, units, or modules, and can be electrical, mechanical, or other forms, for information exchange between devices, units, or modules. The processor 1220 may operate in conjunction with the memory 1230. The processor 1220 may execute program instructions stored in the memory 1230. At least one of the at least one memory may be integrated with the processor.

[0282] This application embodiment does not limit the specific connection medium between the communication interface 1210, processor 1220, and memory 1230. This application embodiment... Figure 12 The memory 1230, processor 1220, and communication interface 1210 are connected via a bus 1240. Figure 12 The connections between other components are shown in bold and are for illustrative purposes only, not as limiting information. The bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, Figure 12 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0283] When the communication device 1200 is specifically a chip or chip system, the communication module 1202 and the communication interface 1210 can output or receive baseband signals. When the communication device 1200 is specifically a device, the communication module 1202 and the communication interface 1210 can output or receive radio frequency signals. In the embodiments of this application, the processor can be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, which can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor, etc. The steps of the methods disclosed in the embodiments of this application can be directly reflected as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.

[0284] In this embodiment, the memory 1230 can be non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), or it can be volatile memory, such as random-access memory (RAM). Memory is any other medium capable of carrying or storing desired program code in the form of instructions or data structures, and accessible by a computer, but is not limited thereto. The memory in this embodiment can also be a circuit or any other device capable of implementing storage functions, used to store program instructions and / or data.

[0285] Some or all of the operations and functions performed by the terminal or network device described in the above method embodiments of this application can be implemented using chips or integrated circuits.

[0286] To achieve the above Figure 10 , Figure 11 or Figure 12 In addition to the functions of the aforementioned communication device, this application also provides a chip, including a processor, for supporting the communication device in implementing the functions involved in the terminal or network device in the above method embodiments. In one possible design, the chip is connected to a memory or the chip includes a memory for storing necessary program instructions and data for the communication device.

[0287] This application provides a computer-readable storage medium storing a computer program, the computer program including instructions for performing the above-described method embodiments.

[0288] This application provides a computer program product containing instructions that, when run on a computer, cause the above-described method embodiments to be executed.

[0289] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0290] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0291] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0292] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0293] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0294] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A method for identifying wireless resources, characterized in that, include: The orbital angular momentum (OAM) modal domain information is obtained, wherein the OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; the vortex electromagnetic wave channel traversed by any number of waveform symbols when transmitted through resources with the same OAM modal domain identifier is the same; The radio resources used for uplink or downlink transmission are determined based on the OAM mode domain information.

2. The method as described in claim 1, characterized in that, The OAM modal domain identifier corresponds to the first number in the sorting sequence of multiple ratios, where the multiple ratios are the ratios between the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes and the reference value.

3. The method as described in claim 2, characterized in that, The sorting sequence number conforms to any of the following sorting rules: descending order, ascending order, odd / even number, modulo operation, or weighted sorting.

4. The method according to any one of claims 1 to 3, characterized in that, The OAM modal domain information further includes any one or a combination of the following: crosstalk coefficient, beam spread angle, or the first OAM physical mode; wherein the crosstalk coefficient and the beam spread angle both correspond to the first OAM physical mode; the crosstalk coefficient includes: the crosstalk coefficient between vortex electromagnetic waves and plane electromagnetic waves under the first OAM physical mode, or the crosstalk coefficient between vortex electromagnetic waves under the first OAM physical mode and vortex electromagnetic waves under the specified OAM physical mode.

5. The method as described in claim 1, characterized in that, The method further includes: Receive a first reference signal from a network device, wherein the first reference signal is the plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes; The reference value is determined based on the first reference signal; The reference value is sent to the network device.

6. The method as described in claim 5, characterized in that, The method further includes: Receive multiple second reference signals from the network device, wherein the multiple second reference signals are vortex electromagnetic waves under the multiple OAM physical modes; The transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes are determined based on the second reference signal; The transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes are sent to the network device.

7. The method as described in claim 6, characterized in that, The method further includes: Send capability information to the network device, the capability information including supported OAM physical modes.

8. The method according to any one of claims 5 to 7, characterized in that, The method further includes: The system receives a mixed wave from the network device; wherein, if the reference value is the transmission parameter of a plane electromagnetic wave, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes and the plane electromagnetic wave; or, if the reference value is the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes; the plurality of OAM physical modes includes the first OAM physical mode; Based on the hybrid wave, determine the crosstalk coefficient between the vortex electromagnetic wave and the corresponding wave of the reference value under each OAM physical mode; The determined crosstalk coefficient is sent to the network device.

9. The method according to any one of claims 1 to 3, characterized in that, The OAM modal domain identifier includes integers and / or fractions.

10. The method according to any one of claims 1 to 3, characterized in that, The first transmission parameter or the transmission parameter includes any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

11. The method according to any one of claims 1 to 3, characterized in that, Determining radio resources based on the OAM modal domain information includes: Based on the OAM mode domain information, combined with time domain identifiers and / or frequency domain identifiers, radio resources are determined.

12. A method for identifying wireless resources, characterized in that, include: The orbital angular momentum (OAM) modal domain information is determined, wherein the OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave in a first OAM physical mode, or the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave in a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM modal domain identifier are transmitted. The OAM mode domain information is sent; the OAM mode domain information is used to determine the radio resources for uplink or downlink transmission.

13. The method as described in claim 12, characterized in that, The method further includes: determining a plurality of OAM modal domain identifiers, the plurality of OAM modal domain identifiers including the first OAM modal domain identifier; and sending the plurality of OAM modal domain identifiers; The determination of multiple OAM modal domain identifiers includes: Transmit vortex electromagnetic waves under multiple OAM physical modes; receive transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes from the terminal device; obtain multiple OAM mode domain identifiers according to the sorting sequence number of the transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes. Alternatively, a reference electromagnetic wave is transmitted, and the transmission parameters of the reference electromagnetic wave are received from the terminal device; multiple vortex electromagnetic waves in multiple OAM physical modes are transmitted to the terminal device, and the transmission parameters of the vortex electromagnetic waves in multiple OAM physical modes are received from the terminal device; the ratio of the transmission parameters of the vortex electromagnetic waves in each OAM physical mode to the transmission parameters of the reference electromagnetic wave is determined, and multiple ratios corresponding to multiple OAM physical modes are obtained; multiple OAM mode domain identifiers are obtained according to the sorting sequence number of the multiple ratios; the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave in a specified OAM physical mode among the multiple OAM physical modes.

14. The method as described in claim 13, characterized in that, The method further includes: Receive capability information from the terminal device, the capability information being used to indicate the OAM physical modes supported by the terminal device; Based on the capability information, the vortex electromagnetic waves under the multiple OAM physical modes to be sent to the terminal device are determined.

15. The method as described in claim 13 or 14, characterized in that, The method further includes: Transmit a hybrid wave, which includes vortex electromagnetic waves under the plurality of OAM physical modes and a reference electromagnetic wave, wherein the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes; The crosstalk coefficients between the vortex electromagnetic waves in the multiple OAM physical modes received from the terminal device and the reference electromagnetic wave are received respectively. The crosstalk coefficients corresponding to the multiple OAM modal domain identifiers are sent to the terminal device.

16. The method as described in claim 13 or 14, characterized in that, The method further includes: Determine the beam spread angle of the multiple OAM physical modes; Send the beam spread angles corresponding to the multiple OAM mode domain identifiers respectively.

17. The method according to any one of claims 12 to 14, characterized in that, The OAM modal domain identifier includes integers and / or fractions.

18. The method according to any one of claims 12 to 14, characterized in that, The transmission parameters include any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

19. A communication device, characterized in that, include: The acquisition module is used to acquire orbital angular momentum (OAM) modal domain information, wherein the OAM modal domain information includes a first OAM modal domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM modal domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM modal domain identifier are transmitted. The determination module is used to determine the radio resources used for uplink or downlink transmission based on the OAM mode domain information.

20. The apparatus as claimed in claim 19, characterized in that, The OAM modal domain identifier corresponds to the first number in the sorting sequence of multiple ratios, where the multiple ratios are the ratios between the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes and the reference value.

21. The apparatus as claimed in claim 20, characterized in that, The sorting sequence number conforms to any of the following sorting rules: descending order, ascending order, odd / even number, modulo operation, or weighted sorting.

22. The apparatus according to any one of claims 19 to 21, characterized in that, The OAM modal domain information further includes any one or a combination of the following: crosstalk coefficient, beam spread angle, or the first OAM physical mode; wherein the crosstalk coefficient and the beam spread angle both correspond to the first OAM physical mode; the crosstalk coefficient includes: the crosstalk coefficient between vortex electromagnetic waves and plane electromagnetic waves under the first OAM physical mode, or the crosstalk coefficient between vortex electromagnetic waves under the first OAM physical mode and vortex electromagnetic waves under the specified OAM physical mode.

23. The apparatus as claimed in claim 19, characterized in that, The device further includes: The communication module is used to receive a first reference signal from the network device, wherein the first reference signal is the plane electromagnetic wave or the vortex electromagnetic wave under the specified OAM physical mode among the plurality of OAM physical modes; The determining module is further configured to determine the reference value based on the first reference signal; The communication module is also used to send the reference value to the network device.

24. The apparatus as claimed in claim 23, characterized in that, The communication module is also configured to receive a plurality of second reference signals from the network device, wherein the plurality of second reference signals are vortex electromagnetic waves under the plurality of OAM physical modes; The determining module is further configured to determine the transmission parameters of the vortex electromagnetic waves under the plurality of OAM physical modes based on the second reference signal; The communication module is also used to send the transmission parameters of the vortex electromagnetic waves under the multiple OAM physical modes to the network device.

25. The apparatus as claimed in claim 24, characterized in that, The communication module is also used to send capability information to the network device, the capability information including supported OAM physical modes.

26. The apparatus according to any one of claims 23 to 25, characterized in that, The communication module is further configured to receive a mixed wave from the network device; wherein, if the reference value is the transmission parameter of a plane electromagnetic wave, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes and the plane electromagnetic wave; or, if the reference value is the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes, the mixed wave includes vortex electromagnetic waves under the plurality of OAM physical modes; the plurality of OAM physical modes includes the first OAM physical mode; The determining module is further configured to determine the crosstalk coefficient between the vortex electromagnetic wave and the corresponding wave of the reference value under each OAM physical mode based on the mixed wave; the communication module is further configured to send the determined crosstalk coefficient to the network device.

27. The apparatus according to any one of claims 19 to 21, characterized in that, The OAM modal domain identifier includes integers and / or fractions.

28. The apparatus according to any one of claims 19 to 21, characterized in that, The first transmission parameter or the transmission parameter includes any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

29. The apparatus according to any one of claims 19 to 21, characterized in that, The determining module is used to: determine the radio resources based on the OAM mode domain information, combined with the time domain identifier and / or frequency domain identifier.

30. A wireless resource identification device, characterized in that, include: A determination module is used to determine orbital angular momentum (OAM) mode domain information, wherein the OAM mode domain information includes a first OAM mode domain identifier, which corresponds to a first transmission parameter of a vortex electromagnetic wave under a first OAM physical mode, or the first OAM mode domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, wherein the reference value includes the transmission parameter of a plane electromagnetic wave or the transmission parameter of a vortex electromagnetic wave under a specified OAM physical mode among multiple OAM physical modes; any multiple waveform symbols traversing the same vortex electromagnetic wave channel when transmitted through resources with the same OAM mode domain identifier are transmitted through the same vortex electromagnetic wave channel; The communication module is used to send the OAM mode domain information; the OAM mode domain information is used to determine the radio resources for uplink or downlink transmission.

31. The apparatus as claimed in claim 30, characterized in that, The determining module is further configured to: determine multiple OAM modal domain identifiers, the multiple OAM modal domain identifiers including the first OAM modal domain identifier; the communication module is further configured to send the multiple OAM modal domain identifiers; When determining multiple OAM modal domain identifiers: The communication module is used to transmit vortex electromagnetic waves under multiple OAM physical modes; receive transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes fed back from the terminal device; the determining module is used to obtain multiple OAM mode domain identifiers according to the sorting sequence number of the transmission parameters of the vortex electromagnetic waves under multiple OAM physical modes. Alternatively, the communication module is configured to transmit a reference electromagnetic wave, receive transmission parameters of the reference electromagnetic wave fed back from the terminal device, transmit vortex electromagnetic waves in multiple OAM physical modes, and receive transmission parameters of the vortex electromagnetic waves in multiple OAM physical modes fed back from the terminal device. The determining module is used to determine the ratio of the transmission parameters of the vortex electromagnetic wave to the transmission parameters of the reference electromagnetic wave under each OAM physical mode, and obtain multiple ratios corresponding to multiple OAM physical modes. Based on the sorting sequence number of the multiple ratios, multiple OAM modal domain identifiers are obtained; The reference electromagnetic wave is either a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the multiple OAM physical modes.

32. The apparatus as claimed in claim 31, characterized in that, The device further includes: Receive capability information from the terminal device, the capability information being used to indicate the OAM physical modes supported by the terminal device; Based on the capability information, the vortex electromagnetic waves under the multiple OAM physical modes to be sent to the terminal device are determined.

33. The apparatus as claimed in claim 31 or 32, characterized in that, The communication module is also used for: Transmit a hybrid wave, which includes vortex electromagnetic waves under the plurality of OAM physical modes and a reference electromagnetic wave, wherein the reference electromagnetic wave is a plane electromagnetic wave or a vortex electromagnetic wave under a specified OAM physical mode among the plurality of OAM physical modes; The crosstalk coefficients between the vortex electromagnetic waves in the multiple OAM physical modes received from the terminal device and the reference electromagnetic wave are received respectively. The crosstalk coefficients corresponding to the multiple OAM modal domain identifiers are sent to the terminal device.

34. The apparatus as claimed in claim 31 or 32, characterized in that, The determining module is also used to determine the beam spread angle of the plurality of OAM physical modes; The communication module is also used to send the beam spread angles corresponding to the multiple OAM mode domain identifiers.

35. The apparatus according to any one of claims 30-31, characterized in that, The OAM modal domain identifier includes integers and / or fractions.

36. The apparatus according to any one of claims 30-31, characterized in that, The transmission parameters include any one or a combination of the following: signal-to-noise ratio, reference signal received power, bit error rate, block error rate, packet error rate, number of failed retransmissions, or successful transmission delay.

37. A communication device, characterized in that, The method includes a processor for running a set of programs to cause the method of any one of claims 1 to 11 to be executed, or to cause the method of any one of claims 12 to 18 to be executed.

38. The apparatus as claimed in claim 37, characterized in that, It also includes a memory that stores programs running on the processor.

39. The apparatus as claimed in claim 37, characterized in that, The device is a chip or integrated circuit.

40. A computer-readable storage medium, characterized in that, The computer storage medium stores computer-readable instructions that, when executed on a communication device, cause the method described in any one of claims 1 to 11 to be performed, or cause the method described in any one of claims 12 to 18 to be performed.

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