Transmission configuration method, device and system

Abstract

The embodiment of the invention provides a transmission configuration method, device and system, and relates to the technical field of mobile communication. In the method, a first device sends a reference signal to a second device; transmission configuration information reported by the second device is received, the transmission configuration information at least comprises a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; according to the transmission configuration information, determining a precoding matrix and an orbital angular momentum (OAM) modal set adopted by the first device; and indicating the OAM mode set to the second equipment, thereby providing a transmission configuration scheme suitable for an OAM communication scene, and effectively solving the configuration problem of a precoding matrix and a transmission mode.

Description

Transmission configuration method, device and system Technical Field

[0001] The present disclosure relates to the field of mobile communication technology, and in particular to a transmission configuration method, device, and system. Background Art

[0002] With the continuous evolution of mobile network communication technology, various application scenarios are increasingly demanding network communication capabilities such as speed, latency, and bandwidth. Electromagnetic beams carrying orbital angular momentum (OAM), due to their infinite and mutually orthogonal modes, can be used for mode division multiplexing, thereby improving spectral efficiency and channel capacity. However, determining the precoding matrix and the system's transmission mode remains an unresolved issue in OAM-based communication applications.

[0003] Summary of the Invention

[0004] The present disclosure proposes a transmission configuration method, device and system, provides a transmission configuration solution suitable for OAM communication scenarios, and effectively solves the configuration problems of precoding matrix and transmission mode.

[0005] An embodiment of the first aspect of the present disclosure provides a transmission configuration method, which is executed by a first device, and the method includes: sending a reference signal to a second device; receiving transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; determining the precoding matrix and orbital angular momentum OAM mode set adopted by the first device according to the transmission configuration information; and indicating the OAM mode set to the second device.

[0006] In some embodiments of the present disclosure, the transmission configuration information further includes a recommended OAM mode quantity and / or a recommended OAM mode set, and the recommended OAM mode quantity and / or the recommended OAM mode set are obtained by the second device based on the recommended PMI.

[0007] In some embodiments of the present disclosure, determining the precoding matrix and orbital angular momentum OAM mode set adopted by the first device based on the transmission configuration information includes: determining the precoding matrix and OAM mode set adopted by the first device based on the recommended PMI, the recommended OAM mode number and / or the recommended OAM mode set.

[0008] In some embodiments of the present disclosure, determining the orbital angular momentum OAM mode set adopted by the first device based on the transmission configuration information includes: selecting OAM modes available to the first device from the recommended OAM mode set to form the OAM mode set adopted by the first device; or determining the OAM mode set adopted by the first device based on the correspondence between the recommended PMI and the OAM mode set.

[0009] In some embodiments of the present disclosure, before indicating the OAM mode set to the second device, the method further includes: determining an index code of the OAM mode set, wherein indicating the OAM mode set to the second device includes: indicating the index code to the second device.

[0010] In some embodiments of the present disclosure, before indicating the OAM mode set to the second device, the method further includes: associating the OAM mode with a demodulation reference signal DMRS port, wherein indicating the OAM mode set to the second device includes: indicating the DMRS port to the second device.

[0011] In some embodiments of the present disclosure, the method further includes: in the case of channel reciprocity, using the determined precoding matrix and OAM mode set adopted by the first device to perform uplink and / or downlink information transmission.

[0012] A second aspect of an embodiment of the present disclosure provides a transmission configuration method, which is executed by a second device, and the method includes: receiving a reference signal sent by a first device; determining transmission configuration information based on the reference signal, the transmission configuration information including at least a recommended precoding matrix index PMI; sending the transmission configuration information to the first device, the transmission configuration information being used to assist the first device in determining the precoding matrix and OAM mode set adopted by the first device; and receiving the OAM mode set indicated by the first device.

[0013] In some embodiments of the present disclosure, determining the transmission configuration information based on the reference signal includes: obtaining corresponding channel information based on the reference signal; and determining the recommended PMI based on the channel information, wherein the recommended PMI may be the PMI that optimizes the received signal quality of the second device.

[0014] In some embodiments of the present disclosure, determining the transmission configuration information based on the reference signal includes: determining the number of uniform circular array UCA antenna ports or antenna elements of the first device based on the reference signal; and determining the PMI of the first device in the first dimension and the second dimension respectively based on the number of uniform circular array UCA antenna ports or antenna elements of the first device, as the recommended PMI.

[0015] In some embodiments of the present disclosure, the transmission configuration information also includes a recommended number of OAM modes and / or a recommended OAM mode set, wherein determining the transmission configuration information based on the reference signal includes: determining the recommended number of OAM modes and / or the recommended OAM mode set based on the recommended PMI and / or channel information obtained based on the reference signal.

[0016] In some embodiments of the present disclosure, receiving the OAM mode set indicated by the first device includes: receiving the OAM mode set, or receiving the index code of the OAM mode set determined by the first device, or receiving a demodulation reference signal DMRS port, wherein the OAM modes in the OAM mode set are associated with the DMRS port.

[0017] In some embodiments of the present disclosure, the method further includes: in the case of channel reciprocity, using the OAM mode set indicated by the first device to perform uplink and / or downlink information transmission.

[0018] In some embodiments of the present disclosure, the method further includes: determining a precoding matrix adopted by the second device; and in the case of channel reciprocity, using the precoding matrix adopted by the second device to perform uplink and / or downlink information transmission.

[0019] An embodiment of the third aspect of the present disclosure provides a transmission configuration device, which is configured in a first device, and includes: a transceiver module, used to send a reference signal to a second device, and receive transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; a determination module, used to determine the precoding matrix and orbital angular momentum OAM mode set adopted by the first device according to the transmission configuration information; the transceiver module is also used to indicate the OAM mode set to the second device.

[0020] An embodiment of the fourth aspect of the present disclosure provides a transmission configuration device, which is configured in a second device, and includes: a transceiver module for receiving a reference signal sent by a first device; a determination module for determining transmission configuration information based on the reference signal, wherein the transmission configuration information includes at least a recommended precoding matrix index PMI; the transceiver module is also used to: send the transmission configuration information to the first device, wherein the transmission configuration information is used to assist the first device in determining the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; and receive the OAM mode set indicated by the first device.

[0021] An embodiment of the fifth aspect of the present disclosure provides a communication system, which includes a first device and a second device, wherein the first device sends a reference signal to the second device; the second device determines transmission configuration information based on the reference signal, and the transmission configuration information at least includes a recommended precoding matrix index PMI; the second device sends the transmission configuration information to the first device; the first device determines the precoding matrix and orbital angular momentum OAM mode set adopted by the first device based on the transmission configuration information; and indicates the OAM mode set to the second device.

[0022] An embodiment of the sixth aspect of the present disclosure provides a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method described in the embodiment of the first aspect or the second aspect of the present disclosure.

[0023] The seventh aspect embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the first aspect or second aspect embodiment of the present disclosure can be implemented.

[0024] According to the transmission configuration method disclosed in the present invention, a first device sends a reference signal to a second device; receives transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; based on the transmission configuration information, determines the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; indicates the OAM mode set to the second device, providing a transmission configuration scheme suitable for OAM communication scenarios, effectively solving the configuration problems of the precoding matrix and transmission mode.

[0025] Additional aspects and advantages of the present disclosure will be given in part in the description below and in part will be obvious from the description below, or will be learned through practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0027] FIG1 is a schematic diagram of a flow chart of a transmission configuration method according to an embodiment of the present disclosure;

[0028] FIG2 is a schematic diagram of a flow chart of a transmission configuration method according to an embodiment of the present disclosure;

[0029] FIG3 is a schematic diagram of a flow chart of a transmission configuration method according to an embodiment of the present disclosure;

[0030] FIG4 is a schematic diagram of a flow chart of a transmission configuration method according to an embodiment of the present disclosure;

[0031] FIG5 is an interactive diagram of a transmission configuration method according to an embodiment of the present disclosure;

[0032] FIG6 is a schematic block diagram of a transmission configuration device according to an embodiment of the present disclosure;

[0033] FIG7 is a schematic block diagram of a transmission configuration device according to an embodiment of the present disclosure;

[0034] FIG8 is a schematic block diagram of a transmission configuration device according to an embodiment of the present disclosure;

[0035] FIG9 is a schematic block diagram of a transmission configuration device according to an embodiment of the present disclosure;

[0036] FIG10 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

[0037] FIG11 is a schematic diagram of the structure of a chip provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0038] The following describes in detail embodiments of the present disclosure, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be construed as limiting the present disclosure.

[0039] The real-world application scenarios of mobile network communication technology are constantly expanding. Future-oriented applications such as augmented reality (AR), virtual reality (VR), and new internet applications (such as the Internet of Vehicles and the Internet of Things) are emerging. These applications are placing increasing demands on network communication speed, latency, bandwidth, and other capabilities. To meet these demands, more and more high-frequency bands, such as millimeter waves and terahertz bands, are being developed. However, spectrum, a finite resource, is becoming increasingly scarce. Therefore, in addition to developing higher frequency bands, seeking communication technologies with higher spectral efficiency has become a top priority.

[0040] With the emergence of the concept of vortex electromagnetic waves, linking them with orbital angular momentum (OAM) has greatly expanded the limitations of the modulation dimension in traditional technologies. Currently, there are two main ways to use OAM to send information: OAM-Shift Keying (OAM-SK) and OAM-Division Multiplexing (OAM-DM). For either approach, the OAM modes carried by vortex electromagnetic waves are theoretically infinite in number, and the OAM beams of different integer eigenvalues ​​are mutually orthogonal, which can theoretically infinitely improve spectrum utilization. In other words, the electromagnetic beam carrying OAM has an infinite number of modes, and each mode is mutually orthogonal. This makes OAM communication have the characteristics of simple generation and demodulation methods, no need for complex receiving and demodulation algorithms, infinite modes, and ultra-high spectrum efficiency. Therefore, mode division multiplexing can be implemented to improve spectrum efficiency and channel capacity to solve the problem of low detection efficiency of the detection system.

[0041] A typical application is OAM communication based on a uniform circular array (UCA). In this system, uplink transmission requires the transmission of an uplink reference signal. This is used to obtain uplink channel information, ensure channel reciprocity, and achieve downlink channel acquisition and uplink beam management. However, related technologies all rely on multiple-input, multiple-output (MIMO) array transmission configurations. Determining the precoding matrix and the system's transmission mode remains an unresolved issue in current OAM-based communication applications.

[0042] To this end, the present disclosure proposes a transmission configuration method, apparatus, and system, providing a transmission configuration solution suitable for OAM communication scenarios, effectively solving the configuration issues of the precoding matrix and transmission mode. The present disclosure uses channel estimation on a second network device or terminal to locally calculate the PMI of the first network device and the system's transmission mode, clarifying the interaction process of CSI feedback signaling.

[0043] It can be understood that the solution provided in the present disclosure can be used for the fifth generation mobile communication technology (Fifth Generation, 5G) and its subsequent communication technologies, such as the fifth generation mobile communication technology evolution (5G-advanced), the sixth generation mobile communication technology (Sixth Generation, 6G), etc., and is not limited in the present disclosure.

[0044] The transmission configuration scheme provided in this application is described in detail below with reference to the accompanying drawings.

[0045] Figure 1 shows a schematic flow chart of a transmission configuration method according to an embodiment of the present disclosure. As shown in Figure 1, the method is performed by a first device. In the embodiment of the present disclosure, the first device is a network device, specifically a base station.

[0046] The method may include the following steps.

[0047] S101: Send a reference signal to a second device.

[0048] In an embodiment of the present disclosure, the second device may be a network device, such as a relay or a smart repeater, including but not limited to a network-controlled repeater (NCR).

[0049] In the embodiment of the present disclosure, the second device may also be a user equipment (UE), including but not limited to an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle, a vehicle-mounted device, etc.

[0050] In an embodiment of the present disclosure, the reference signal sent by the first device is used by the second device to acquire channel information.

[0051] S102: Receive transmission configuration information reported by the second device.

[0052] In an embodiment of the present disclosure, the transmission configuration information at least includes a recommended precoding matrix index (PMI), and the recommended PMI is obtained by the second device based on the reference signal.

[0053] S103: Determine, according to the transmission configuration information, a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device.

[0054] In an embodiment of the present disclosure, the first device determines the precoding matrix and OAM mode adopted by the first device itself according to the transmission configuration information (eg, PMI) reported by the second device.

[0055] It should be understood that the first device may use the determined precoding matrix and OAM mode to transmit and receive signals, and the transmission and reception may use the same precoding matrix and OAM mode.

[0056] S104: Indicate the OAM mode set to the second device.

[0057] In an embodiment of the present disclosure, the first device indicates the determined OAM mode set to the second device for use in transmission with the second device.

[0058] In summary, according to the transmission configuration method provided by the embodiment of the present disclosure, a first device sends a reference signal to a second device; receives transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; according to the transmission configuration information, determines the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; indicates the OAM mode set to the second device, providing a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and transmission mode.

[0059] Figure 2 shows a flow chart of a transmission configuration method according to an embodiment of the present disclosure. The method is applied to a first device, based on the embodiment shown in Figure 1, as shown in Figure 2, the method may include the following steps.

[0060] S201: Send a reference signal to a second device.

[0061] S202: Receive transmission configuration information reported by the second device.

[0062] In an embodiment of the present disclosure, the transmission configuration information at least includes a recommended precoding matrix index (PMI), and the recommended PMI is obtained by the second device based on the reference signal.

[0063] In an optional embodiment, the transmission configuration information further includes a recommended OAM mode quantity and / or a recommended OAM mode set, and the recommended OAM mode quantity and / or the recommended OAM mode set are obtained by the second device based on the recommended PMI.

[0064] S203: Determine, according to the transmission configuration information, a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device.

[0065] In an embodiment of the present disclosure, the first device determines the precoding matrix and OAM mode adopted by the first device itself according to the transmission configuration information (eg, PMI) reported by the second device.

[0066] In a preferred embodiment, step 203 may specifically include: determining the precoding matrix and OAM mode set used by the first device according to the recommended PMI, the recommended OAM mode number and / or the recommended OAM mode set.

[0067] In the present disclosure, the first device can determine the orbital angular momentum OAM mode set adopted by the first device in the following manner: in the first manner, the first device can select the OAM modes available to the first device from the recommended OAM mode set to form the OAM mode set adopted by the first device; in the second manner, the first device can determine the OAM mode set adopted by the first device based on the correspondence between the recommended PMI and the OAM mode set.

[0068] It is understood that the correspondence between a PMI and an OAM mode set can be a one-to-one relationship or a one-to-many relationship. In other words, a PMI can correspond to multiple OAM mode sets. For example, a PMI corresponds to two OAM mode sets, where the first OAM mode set contains three OAM modes and the second OAM mode set contains four OAM modes. The second OAM mode set has better performance, but both the first and second OAM mode sets are usable OAM mode sets. The present disclosure does not limit the specific form of the above correspondence.

[0069] For example, the first device may select some available OAM modes (ie, OAM modes that are not currently occupied by other users) from the OAM mode set recommended by the second device as transmission modes.

[0070] It should be understood that the first device can also determine the precoding matrix and OAM mode adopted by itself through other means. As an internal behavior of the first device, this disclosure is not limited. The way in which the first device determines the precoding matrix and OAM mode adopted by itself through the recommended PMI or OAM mode parameters reported by the second device is included in the scheme described in this disclosure.

[0071] S204: Determine an index code of the OAM mode set, or associate the OAM mode with a demodulation reference signal (DMRS) port.

[0072] S205: Indicate the OAM mode set to the second device.

[0073] In an embodiment of the present disclosure, the first device may indicate the OAM mode set to the second device in various ways.

[0074] For example, a first possible approach is to directly notify the second network device or terminal of the OAM mode, such as the mode set [1 2 3 4].

[0075] In another optional manner, the first device may indicate the index code determined in step S204 to the second device. That is, the first device may index-code the OAM modality set and indicate the index code to the second network device or terminal. For example, if the modality set [1 2 3 4] is set to a modality set with an index value of 2, the first device may indicate the index value 2 to the second device.

[0076] In another optional manner, the first device may indicate the demodulation reference signal (DMRS) port associated with the OAM mode in the OAM mode set in step S204 to the second device. There is an association between the OAM mode and the demodulation reference signal (DMRS) port. The first device may not notify the second device of the OAM mode information through explicit signaling, but may implicitly indicate the mode information to the second device through the DMRS.

[0077] In other words, in the present disclosure, the first device can directly and explicitly indicate the various modal values ​​forming the OAM modal set to the second device, or can implicitly indicate it to the second device through the DMRS port, or can encode the OAM modal set and indicate the index encoding of the OAM modal set to the second device.

[0078] It should be understood that the first device may use the determined precoding matrix and OAM mode to transmit and receive signals, and the transmission and reception may use the same precoding matrix and OAM mode.

[0079] S206: In the case of channel reciprocity, use the determined precoding matrix and OAM mode set adopted by the first device to perform uplink and / or downlink information transmission.

[0080] In an embodiment of the present disclosure, if channel reciprocity is achieved, the first device may use the determined precoding matrix and OAM mode set to perform uplink and downlink information transmission, i.e., send or receive signals, and use the same precoding matrix and OAM mode set during the sending and receiving processes.

[0081] It should be understood that the present disclosure only discusses the case of channel reciprocity. If the channels are not reciprocal, uplink and downlink need to be discussed separately, which is not discussed in the present disclosure.

[0082] In summary, according to the transmission configuration method provided by the embodiment of the present disclosure, a first device sends a reference signal to a second device; receives transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; according to the transmission configuration information, determines the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; indicates the OAM mode set to the second device, providing a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and transmission mode.

[0083] FIG3 is a flow chart of a transmission configuration method according to an embodiment of the present disclosure. The method is applied to a second device. In an embodiment of the present disclosure, the second device can be a network device, such as a relay or a smart repeater, including but not limited to a network-controlled repeater (NCR), or a user equipment (UE), including but not limited to a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle, an on-board device, etc. The second device (relay or UE) completes the uplink transmission configuration through interaction with the first device (base station).

[0084] As shown in FIG3 , the method may include the following steps.

[0085] S301: Receive a reference signal sent by a first device.

[0086] In an embodiment of the present disclosure, the first device is a network device, specifically a base station. The reference signal sent by the first device can be used by the second device to obtain channel information.

[0087] S302: Determine transmission configuration information according to the reference signal.

[0088] In an embodiment of the present disclosure, the transmission configuration information at least includes a recommended precoding matrix index (PMI).

[0089] It should be understood that the recommended PMI is obtained by the second device based on the reference signal, for example, obtained through channel measurement and calculation.

[0090] S303: Send the transmission configuration information to the first device.

[0091] In the present disclosure, the transmission configuration information is used to assist the first device in determining the precoding matrix and OAM mode set adopted by the first device. The first device determines the precoding matrix and OAM mode adopted by the first device itself based on the transmission configuration information (such as PMI) reported by the second device.

[0092] S304: Receive the OAM mode set indicated by the first device.

[0093] In an embodiment of the present disclosure, the first device indicates the determined OAM mode set to the second device for transmission with the second device. It will be understood by those skilled in the art that the OAM modes used by the first device and the second device during uplink and downlink transmission are synchronized.

[0094] In summary, according to the transmission configuration method provided by the embodiment of the present disclosure, the second device receives a reference signal sent by the first device; determines transmission configuration information based on the reference signal, and the transmission configuration information includes at least a recommended precoding matrix index PMI; sends the transmission configuration information to the first device, and the transmission configuration information is used to assist the first device in determining the precoding matrix and OAM mode set adopted by the first device; receives the OAM mode set indicated by the first device, thereby providing a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0095] Figure 4 is a flow chart of a transmission configuration method according to an embodiment of the present disclosure. The method is applied to a second device, based on the embodiment shown in Figure 3, as shown in Figure 4, the method may include the following steps.

[0096] S401: Receive a reference signal sent by a first device.

[0097] S402: Determine transmission configuration information according to the reference signal.

[0098] In the embodiment of the present disclosure, the transmission configuration information at least includes a recommended precoding matrix index PMI.

[0099] Specifically, the second device may obtain corresponding channel information based on the reference signal, and determine the recommended PMI according to the channel information, wherein the recommended PMI may be a PMI that optimizes the received signal quality of the second device.

[0100] For example, in an optional embodiment, the second device serves as a receiving end and may determine the PMI based on the principle of maximizing the receiving end power.

[0101] In this embodiment, the second device can determine the number of uniform circular array UCA antenna ports or antenna elements of the first device based on the reference signal, and the second device can determine the PMI of the first device in the first dimension and the second dimension respectively based on the number of uniform circular array UCA antenna ports or antenna elements of the first device as the recommended PMI.

[0102] For example, one possible codebook scheme that PMI is based on is:

[0103] First dimension direction:

[0104]

[0105] Second dimension direction:

[0106]

[0107] in denote the precoding matrices of the first device UCA in the first dimension (eg, horizontal direction) and the second dimension (eg, vertical direction), λ denotes the carrier wavelength, R t represents the UCA radius of the first device, N is the number of UCA antenna elements, O1 and O2 are oversampling factors, which are used to identify the granularity in the first and second dimensions, and k 1,l ,k 2,l are the first-dimensional directional beam index and the second-dimensional directional beam index, respectively, l represents the modal value, and j is a complex number. In an optional embodiment of the present disclosure, the transmission configuration information may also include a recommended number of OAM modes and / or a recommended OAM mode set. In this embodiment, determining the transmission configuration information based on the reference signal includes: determining the recommended number of OAM modes and / or the recommended OAM mode set based on the recommended PMI and / or channel information obtained based on the reference signal.

[0108] As an internal algorithm of the second device, the present disclosure does not limit the manner in which the second device determines the OAM mode according to the PMI.

[0109] For example, assuming that the second device uses the recommended PMI, calculates the recommended number of OAM modes and the OAM mode set. Based on the channel information H, assuming that the PMI is used, assuming that the first device performs OAM modulation before precoding, and assuming equal power distribution between the modes, the second device can calculate the corresponding channel capacity for each OAM mode and select the mode set that maximizes the system channel capacity as the transmission mode.

[0110] S403: Send the transmission configuration information to the first device, where the transmission configuration information is used to assist the first device in determining a precoding matrix and an OAM mode set adopted by the first device.

[0111] S404: Receive the OAM mode set indicated by the first device.

[0112] In an embodiment of the present disclosure, the second device may receive the OAM mode set indicated by the first device in a variety of ways. In one way, the second device may directly receive the OAM mode set, such as the mode set [1 2 3 4]. In another way, the second device may receive the index code of the OAM mode set determined by the first device. For example, the first device may index-code the OAM mode set and indicate the index code to the second network device or terminal. For example, the mode set [1 2 3 4] is set to a mode set with an index value of 2, and the second device may receive the index value 2 from the first device. In another way, the second device may receive a demodulation reference signal DMRS port, wherein the OAM modes in the OAM mode set are associated with the DMRS port. The first device may not notify the second device of the OAM mode information through explicit signaling, but may implicitly indicate the mode information to the second device through DMRS.

[0113] S405 : In the case of channel reciprocity, use the OAM mode set indicated by the first device to perform uplink and / or downlink information transmission.

[0114] In embodiments of the present disclosure, if channel reciprocity is achieved, the second device may use the OAM mode set indicated by the first device for uplink and downlink information transmission, i.e., to send or receive signals, and may use the same OAM mode set during both transmission and reception. S406: Determine the precoding matrix used by the second device.

[0115] S407: In the case of channel reciprocity, use the precoding matrix adopted by the second device to perform uplink and / or downlink information transmission.

[0116] It is understood that steps S406 and S407 are optional. In this embodiment, the second device can determine the precoding matrix used by the second device itself and, in the case of channel reciprocity, apply this precoding matrix to transmit or receive signals. The same precoding matrix can be used during both transmission and reception. The case of non-channel reciprocity requires separate discussion and is not detailed in this disclosure.

[0117] In summary, according to the transmission configuration method provided by the embodiment of the present disclosure, the second device receives a reference signal sent by the first device; determines transmission configuration information based on the reference signal, and the transmission configuration information includes at least a recommended precoding matrix index PMI; sends the transmission configuration information to the first device, and the transmission configuration information is used to assist the first device in determining the precoding matrix and OAM mode set adopted by the first device; receives the OAM mode set indicated by the first device, thereby providing a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0118] Figure 5 is a signaling interaction diagram of a transmission configuration method according to an embodiment of the present disclosure, which is applied to a communication system, which includes a first device and a second device, wherein the first device is a network device, specifically a base station, and the second device can be a network device (such as a relay) or a user equipment UE.

[0119] As shown in FIG5 , the communication process may include the following steps.

[0120] S501: A first device sends a reference signal to a second device.

[0121] S502: The second device determines transmission configuration information according to the reference signal.

[0122] In an embodiment of the present disclosure, the transmission configuration information at least includes a recommended precoding matrix index (PMI).

[0123] S503: The second device sends the transmission configuration information to the first device.

[0124] S504: The first device determines a precoding matrix and an orbital angular momentum (OAM) mode set used by the first device according to the transmission configuration information.

[0125] S505: The first device indicates the OAM mode set to the second device.

[0126] The principles of the above steps S501-S505 are the same as those of the steps in the embodiment shown in Figures 1 to 4 of the present disclosure. Please refer to the relevant description of the embodiment shown in Figures 1 to 4, and no further details will be given here.

[0127] In summary, according to the transmission configuration method provided by the embodiment of the present disclosure, the first device sends a reference signal to the second device, and the second device determines the transmission configuration information based on the reference signal, where the transmission configuration information includes at least a recommended precoding matrix index PMI. The first device determines the precoding matrix and the orbital angular momentum OAM mode set adopted by the first device based on the transmission configuration information, and indicates the OAM mode set to the second device. The present disclosure provides a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0128] In the embodiments provided above, the methods provided in the embodiments of the present application are described from the perspectives of the first device and the second device, respectively. In order to implement the various functions in the methods provided in the embodiments of the present application, the network device and the terminal device may include a hardware structure and a software module, and implement the aforementioned functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. A certain function of the aforementioned functions may be executed in the form of a hardware structure, a software module, or a hardware structure plus a software module.

[0129] Corresponding to the transmission configuration methods provided in the above-mentioned embodiments, the present disclosure also provides a transmission configuration device. Since the transmission configuration device provided in the embodiment of the present disclosure corresponds to the transmission configuration methods provided in the above-mentioned embodiments, the implementation method of the transmission configuration method is also applicable to the transmission configuration device provided in this embodiment and will not be described in detail in this embodiment.

[0130] FIG6 is a schematic structural diagram of a transmission configuration apparatus 600 provided in an embodiment of the present disclosure. The transmission configuration apparatus 600 may be used for a first device.

[0131] As shown in Figure 6, the device 600 may include: a transceiver module 610, used to send a reference signal to the second device and receive transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; and a first determination module 620, used to determine the precoding matrix and orbital angular momentum OAM mode set adopted by the first device based on the transmission configuration information; the transceiver module 610 is also used to indicate the OAM mode set to the second device.

[0132] According to the transmission configuration device provided by an embodiment of the present disclosure, a first device sends a reference signal to a second device; receives transmission configuration information reported by the second device, the transmission configuration information at least including a recommended precoding matrix index PMI, and the recommended PMI is obtained by the second device based on the reference signal; according to the transmission configuration information, determines the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; indicates the OAM mode set to the second device, providing a transmission configuration scheme suitable for OAM communication scenarios, effectively solving the configuration problems of the precoding matrix and transmission mode.

[0133] In some embodiments, the transmission configuration information further includes a recommended OAM mode quantity and / or a recommended OAM mode set, and the recommended OAM mode quantity and / or the recommended OAM mode set are obtained by the second device based on the recommended PMI.

[0134] In some embodiments, the first confirmation module 620 is specifically configured to determine the precoding matrix and OAM mode set used by the first device according to the recommended PMI, the recommended OAM mode number and / or the recommended OAM mode set.

[0135] In some embodiments, the first confirmation module 620 is further used to: select OAM modes available to the first device from the recommended OAM mode set to form the OAM mode set adopted by the first device; or to determine the OAM mode set adopted by the first device based on the correspondence between the recommended PMI and the OAM mode set.

[0136] In some embodiments, as shown in FIG7 , the apparatus 600 further includes a second confirmation module 630 for determining an index code of the OAM mode set, and the transceiver module 610 is specifically configured to indicate the index code to the second device.

[0137] In some embodiments, the apparatus 600 further includes an associating module 640 for associating the OAM mode with a demodulation reference signal DMRS port, and the transceiver module 610 is further configured to indicate the DMRS port to the second device.

[0138] In some embodiments, the apparatus 600 further includes a transmission module 650 configured to perform uplink and / or downlink information transmission using the determined precoding matrix and OAM mode set adopted by the first device in the case of channel reciprocity.

[0139] In summary, the transmission configuration device provided according to the embodiment of the present disclosure provides a transmission configuration solution suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0140] Fig. 8 is a schematic diagram of the structure of a transmission configuration apparatus 700 provided in an embodiment of the present disclosure. The transmission configuration apparatus 700 may be used for a second device.

[0141] As shown in Figure 8, the device 700 may include: a transceiver module 710, used to receive a reference signal sent by a first device; a first determination module 720, used to determine transmission configuration information based on the reference signal, the transmission configuration information at least including a recommended precoding matrix index PMI; the transceiver module 710 is also used to: send the transmission configuration information to the first device, the transmission configuration information is used to assist the first device in determining the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; and receive the OAM mode set indicated by the first device.

[0142] According to the transmission configuration device provided by the embodiment of the present disclosure, the second device receives a reference signal sent by the first device; determines transmission configuration information based on the reference signal, and the transmission configuration information includes at least a recommended precoding matrix index PMI; sends the transmission configuration information to the first device, and the transmission configuration information is used to assist the first device in determining the precoding matrix and OAM mode set adopted by the first device; receives the OAM mode set indicated by the first device, thereby providing a transmission configuration scheme suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0143] In some embodiments, as shown in Figure 9, the device 700 also includes an acquisition module 730 for acquiring corresponding channel information based on the reference signal, and the first determination module 720 is specifically used to: determine the recommended PMI based on the channel information, wherein the recommended PMI may be the PMI that optimizes the received signal quality of the second device.

[0144] In some embodiments, the first determination module 720 is used to: determine the number of uniform circular array UCA antenna ports or antenna elements of the first device based on the reference signal; and determine the PMI of the first device in the first dimension and the second dimension respectively based on the number of uniform circular array UCA antenna ports or antenna elements of the first device as the recommended PMI.

[0145] In some embodiments, the transmission configuration information also includes a recommended OAM mode number and / or a recommended OAM mode set, and the first determination module 720 is further used to: determine the recommended OAM mode number and / or recommended OAM mode set based on the recommended PMI and / or the channel information obtained according to the reference signal.

[0146] In some embodiments, the transceiver module 710 is specifically used to: receive the OAM mode set, or receive the index code of the OAM mode set determined by the first device, or receive a demodulation reference signal DMRS port, wherein the OAM mode in the OAM mode set has an associated relationship with the DMRS port.

[0147] In some embodiments, the apparatus 700 further includes a transmission module 740 configured to perform uplink and / or downlink information transmission using the OAM mode set indicated by the first device in the case of channel reciprocity.

[0148] In some embodiments, the apparatus 700 further includes a second determination module 750 for determining the precoding matrix adopted by the second device, and the transmission module 740 is further configured to: in the case of channel reciprocity, use the precoding matrix adopted by the second device for uplink and / or downlink information transmission.

[0149] In summary, the transmission configuration device provided according to the embodiment of the present disclosure provides a transmission configuration solution suitable for OAM communication scenarios, which effectively solves the configuration problems of the precoding matrix and the transmission mode.

[0150] An embodiment of the present application also provides a communication system, which includes the transmission configuration device shown in the embodiments of Figures 6-9 above, and is used to execute the transmission configuration method shown in the embodiments of Figures 1-5.

[0151] Please refer to Figure 10, which is a schematic diagram of the structure of a communication device 800 provided in an embodiment of the present application. Communication device 800 can be a network device, a user device, a chip, a chip system, or a processor that supports the network device to implement the above method, or a chip, a chip system, or a processor that supports the user device to implement the above method. This device can be used to implement the method described in the above method embodiment. For details, please refer to the description of the above method embodiment.

[0152] The communication device 800 may include one or more processors 801. The processor 801 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control the communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0153] Optionally, the communication device 800 may further include one or more memories 802, on which a computer program 804 may be stored. The processor 801 executes the computer program 804 to cause the communication device 800 to perform the method described in the above method embodiment. Optionally, the memory 802 may also store data. The communication device 800 and the memory 802 may be provided separately or integrated together.

[0154] Optionally, the communication device 800 may further include a transceiver 805 and an antenna 806. The transceiver 805 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, etc., and is configured to implement transceiver functions. The transceiver 805 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, etc., and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., and is configured to implement a transmitting function.

[0155] Optionally, the communication device 800 may further include one or more interface circuits 807. The interface circuit 807 is configured to receive code instructions and transmit the code instructions to the processor 801. The processor 801 executes the code instructions to enable the communication device 800 to perform the method described in the above method embodiment.

[0156] In one implementation, processor 801 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0157] In one implementation, processor 801 may store a computer program 803. Computer program 803, when executed on processor 801, enables communication device 800 to perform the method described in the above method embodiment. Computer program 803 may be embedded in processor 801, in which case processor 801 may be implemented by hardware.

[0158] In one implementation, the communication device 800 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiment. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0159] The communication device described in the above embodiments may be a network device or a user device, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to FIG10. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be:

[0160] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0161] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0162] (3) ASIC, such as modem;

[0163] (4) Modules that can be embedded in other devices;

[0164] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0165] (6)Others, etc.

[0166] If the communication device can be a chip or a chip system, please refer to the schematic diagram of the chip structure shown in Figure 11. The chip shown in Figure 11 includes a processor 901 and an interface 902. The number of processors 901 can be one or more, and the number of interfaces 902 can be multiple.

[0167] Optionally, the chip further includes a memory 903, which is used to store necessary computer programs and data.

[0168] Those skilled in the art will also appreciate that the various illustrative logical blocks and steps listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0169] The present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0170] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0171] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. Available media may be magnetic media (eg, floppy disks, hard disks, tapes), optical media (eg, high-density digital video discs (DVDs)), or semiconductor media (eg, solid state disks (SSDs)).

[0172] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application, and also indicate the order of precedence.

[0173] In this application, at least one can also be described as one or more, and multiple can be two, three, four or more, which is not limited in this application. In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0174] As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and / or device (e.g., a magnetic disk, an optical disk, a memory, a programmable logic device (PLD)) for providing machine instructions and / or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal for providing machine instructions and / or data to a programmable processor.

[0175] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), and the Internet.

[0176] Computer systems may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The client and server relationship arises through computer programs running on the respective computers and having a client-server relationship to each other.

[0177] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in this disclosure can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved. This is not limited herein.

[0178] Furthermore, it should be understood that the various embodiments of the present application may be implemented individually or in combination with other embodiments where the solution permits.

[0179] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0180] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0181] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A transmission configuration method, characterized in that: The method is performed by a first device, and includes: sending a reference signal to the second device; receiving transmission configuration information reported by the second device, where the transmission configuration information includes at least a recommended precoding matrix index PMI, where the recommended PMI is obtained by the second device based on the reference signal; Determining, according to the transmission configuration information, a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device; The OAM mode set is indicated to the second device.

2. The method according to claim 1, characterized in that The transmission configuration information further includes a recommended OAM mode quantity and / or a recommended OAM mode set, where the recommended OAM mode quantity and / or the recommended OAM mode set are obtained by the second device based on the recommended PMI.

3. The method according to claim 2, characterized in that The determining, according to the transmission configuration information, a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device includes: Determine a precoding matrix and an OAM mode set used by the first device according to the recommended PMI, the recommended OAM mode number and / or the recommended OAM mode set.

4. The method according to claim 2 or 3, characterized in that The determining, according to the transmission configuration information, an orbital angular momentum OAM mode set adopted by the first device includes: selecting OAM modes available to the first device from the recommended OAM mode set to form an OAM mode set adopted by the first device; or Based on the correspondence between the recommended PMI and the OAM modality set, the OAM modality set adopted by the first device is determined.

5. The method according to any one of claims 1 to 4, characterized in that Before indicating the OAM mode set to the second device, the method further includes: Determine the index code of the OAM mode set, The indicating the OAM mode set to the second device includes: The index code is indicated to the second device.

6. The method according to any one of claims 1 to 4, characterized in that Before indicating the OAM mode set to the second device, the method further includes: Associate the OAM mode with the demodulation reference signal DMRS port, The indicating the OAM mode set to the second device includes: Indicate the DMRS port to the second device.

7. The method according to any one of claims 1 to 6, characterized in that The method further comprises: In the case of channel reciprocity, uplink and / or downlink information transmission is performed using the determined precoding matrix and OAM mode set adopted by the first device.

8. A transmission configuration method, characterized in that: The method is performed by a second device, and includes: receiving a reference signal sent by the first device; Determine transmission configuration information according to the reference signal, wherein the transmission configuration information at least includes a recommended precoding matrix index PMI; Sending the transmission configuration information to the first device, where the transmission configuration information is used to assist the first device in determining a precoding matrix and an OAM mode set adopted by the first device; Receive the OAM mode set indicated by the first device.

9. The method according to claim 8, characterized in that The determining transmission configuration information according to the reference signal includes: Based on the reference signal, obtaining corresponding channel information; The recommended PMI is determined according to the channel information, wherein the recommended PMI is a PMI that optimizes the received signal quality of the second device.

10. The method according to claim 8, characterized in that The determining transmission configuration information according to the reference signal includes: Determine the number of uniform circular array (UCA) antenna ports or antenna elements of the first device according to the reference signal, According to the number of uniform circular array (UCA) antenna ports or antenna elements of the first device, the PMIs of the first device in the first dimension and the second dimension are determined as the recommended PMIs.

11. The method according to any one of claims 8 to 10, characterized in that The transmission configuration information also includes the recommended OAM mode quantity and / or the recommended OAM mode set, The determining of the transmission configuration information according to the reference signal includes: The recommended OAM mode quantity and / or recommended OAM mode set is determined based on the recommended PMI and / or channel information obtained according to the reference signal.

12. The method according to any one of claims 8 to 11, characterized in that Receiving the OAM mode set indicated by the first device includes: receiving the OAM mode set, or receiving an index code of the OAM mode set determined by the first device, or A demodulation reference signal (DMRS) port is received, wherein an OAM mode in the OAM mode set is associated with the DMRS port.

13. The method according to any one of claims 8 to 12, characterized in that The method further comprises: In the case of channel reciprocity, the OAM mode set indicated by the first device is used to perform uplink and / or downlink information transmission.

14. The method according to any one of claims 8 to 12, characterized in that The method further comprises: determining a precoding matrix used by the second device; In the case of channel reciprocity, the precoding matrix adopted by the second device is used to perform uplink and / or downlink information transmission.

15. A transmission configuration device, characterized in that: The device is configured in a first device, and includes: a transceiver module, configured to send a reference signal to a second device and receive transmission configuration information reported by the second device, the transmission configuration information including at least a recommended precoding matrix index PMI, the recommended PMI being obtained by the second device based on the reference signal; A determination module, configured to determine a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device according to the transmission configuration information; The transceiver module is further configured to indicate the OAM mode set to the second device.

16. A transmission configuration device, characterized in that: The device is configured in a second device, and includes: a transceiver module, configured to receive a reference signal sent by the first device; a determination module, configured to determine transmission configuration information according to the reference signal, wherein the transmission configuration information at least includes a recommended precoding matrix index PMI; The transceiver module is further used to: send the transmission configuration information to the first device, where the transmission configuration information is used to assist the first device in determining the precoding matrix and orbital angular momentum OAM mode set adopted by the first device; and receive the OAM mode set indicated by the first device.

17. A communication system, characterized in that: The system includes a first device and a second device, wherein: The first device sends a reference signal to the second device; The second device determines transmission configuration information according to the reference signal, where the transmission configuration information at least includes a recommended precoding matrix index PMI; The second device sends the transmission configuration information to the first device; The first device determines, according to the transmission configuration information, a precoding matrix and an orbital angular momentum (OAM) mode set adopted by the first device; The OAM mode set is indicated to the second device.

18. A communication device, wherein: include: transceiver; Memory; A processor is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and can implement the method according to any one of claims 1 to 14.

19. A computer storage medium, wherein: The computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by the processor, the method according to any one of claims 1 to 14 can be implemented.

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