A communication method, device and equipment based on orbital angular momentum

Abstract

The present disclosure provides an OAM-based communication method, device and equipment. The method can be applied to an OAM-based communication system. The method can include: a terminal device obtaining a target OAM mode; and the terminal device transmitting a control channel according to the target OAM mode, wherein the first OAM mode includes at least one of the following OAM modes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1. In the present disclosure, the terminal device and the network equipment transmit the control channel according to a specific OAM mode, thereby increasing the robustness of the control channel and improving the reliability of the system.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of wireless communication, and in particular, to a communication method, device and equipment based on orbital angular momentum (OAM). BACKGROUND

[0002] With the continuous development of wireless communication, the requirement for communication capability is also getting higher and higher. For future-oriented augmented reality (AR), virtual reality (VR), Internet of Vehicles, Internet of Things and other application scenarios, super-high rate, ultra-low latency, super-large bandwidth communication becomes the norm. In order to meet this requirement, the concept of vortex electromagnetic wave is proposed, and vortex electromagnetic wave is linked with OAM. OAM is independent of traditional phase, frequency, polarization and other modulation dimensions, and is considered as a new modulation dimension. And the OAM mode carried by vortex electromagnetic wave theoretically has infinite number, and the OAM beams with different integer eigenvalues are mutually orthogonal. Theoretically, the spectrum utilization rate can be infinitely improved.

[0003] In the OAM-based wireless communication system, if there is an axis offset angle between the transceivers, the receiving opportunity will produce mode crosstalk, resulting in an increase in the bit error rate and a decline in system performance. Therefore, how to ensure the stable transmission of the control channel is a problem to be solved. SUMMARY

[0004] The present disclosure provides a communication method, device and equipment based on OAM to increase the robustness of the control channel and improve the reliability of the communication system.

[0005] In a first aspect, the present disclosure provides a communication method based on OAM, which can be applied to a terminal device in an OAM-based communication system. The method can include: the terminal device obtaining a target OAM mode; and the terminal device transmitting a control channel according to the target OAM mode.

[0006] Here, the target OAM mode can be understood as the transmission mode of the control channel. The terminal device and the network device transmit the control channel according to the transmission mode.

[0007] For example, the control channel can include a physical uplink control channel (PUCCH) and / or a physical downlink control channel (PDCCH).

[0008] In some possible implementation manners, the target OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode with an eigenvalue of -1, 0 or 1.

[0009] For example, the eigenvalues of the OAM modes in the OAM mode combination can include one or more of [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0010] In some possible implementation manners, when the target OAM mode includes multiple OAM mode combinations, the terminal device transmits the control channel according to the target OAM mode, including: the terminal device sequentially invokes the multiple OAM mode combinations to transmit the control channel.

[0011] In some possible implementation manners, the terminal device obtains the target OAM mode, including: the terminal device determines a preset OAM mode (i.e., a second OAM mode) as the target OAM mode; or, the terminal device determines an OAM mode (i.e., a first OAM mode) indicated by the network device as the target OAM mode.

[0012] In some possible implementation manners, the terminal device obtains the target OAM mode, including: when the terminal device is initially accessed, the terminal device determines a preset OAM mode as the target OAM mode.

[0013] In some possible implementation manners, the terminal device obtains the target OAM mode, including: the terminal device obtains an OAM mode indicated by the network device; and after entering a connected state, the terminal device determines the OAM mode indicated by the network device as the target OAM mode.

[0014] In some possible implementation manners, the terminal device obtains the OAM mode indicated by the network device, including: the terminal device receives transmission mode indication information sent by the network device, the transmission mode indication information being used to indicate the target OAM mode to the terminal device; and the terminal device determines the target OAM mode according to the transmission mode indication information.

[0015] In some possible implementation manners, the method further includes: if the terminal device does not obtain the OAM mode indicated by the network device, the terminal device determines a preset OAM mode as the target OAM mode after entering a connected state.

[0016] In a second aspect, the present disclosure provides an OAM-based communication method, which can be applied to a terminal device in an OAM-based communication system. The method can include: obtaining, by the terminal device, a preset OAM mode (i.e., a third OAM mode) when performing initial access with a network device; and transmitting, by the terminal device, a control channel in the initial access according to the preset OAM mode.

[0017] In some possible implementation manners, the preset OAM mode includes one OAM mode, and the OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0018] In some possible implementation manners, the control channel can include a PUCCH and / or a PDCCH.

[0019] In a third aspect, the present disclosure provides an OAM-based communication method, which can be applied to a network device in an OAM-based communication system. The method can include: determining, by the network device, a target OAM mode; and transmitting, by the network device, a control channel according to the target OAM mode.

[0020] In some possible implementation manners, the target OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0021] In some possible implementation manners, after the network device determines the target OAM mode, the method further includes: indicating, by the network device, the target OAM mode to a terminal device.

[0022] In some possible implementation manners, the network device indicates the target OAM mode to the terminal device, including: sending, by the network device, transmission mode indication information to the terminal device, where the transmission mode indication information is used to indicate the target OAM mode.

[0023] In some possible implementation manners, the network device determines the target OAM mode, including: determining, by the network device, a preset OAM mode (i.e., a second OAM mode) as the target OAM mode.

[0024] In some possible implementation manners, the network device obtains the target OAM mode, including: when a terminal device performs initial access with the network device, determining, by the network device, a preset OAM mode as the target OAM mode.

[0025] In some possible implementation manners, the network device transmits the control channel according to the target OAM mode, including: after the terminal device enters a connected state, transmitting, by the network device, the control channel according to the target OAM mode.

[0026] In some possible implementation manners, the control channel comprises a PUCCH and / or a PDCCH.

[0027] In a fourth aspect, the present disclosure provides a communication method based on OAM, which can be applied to a network device in an OAM-based communication system. The method can comprise: obtaining, by the network device, a preset OAM mode (i.e., a fourth OAM mode) when performing initial access with a terminal device; and transmitting, by the network device, a control channel according to the preset OAM mode in the initial access.

[0028] In some possible implementation manners, the preset OAM mode comprises one OAM mode, and the OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0029] In some possible implementation manners, the control channel comprises a PUCCH and / or a PDCCH.

[0030] It should be noted that, in the present disclosure, the second OAM mode, the third OAM mode, or the fourth OAM mode described above can be understood as a preset OAM mode. The first OAM mode described above can be understood as an OAM mode indicated by a network device or an OAM mode determined by the network device for itself.

[0031] In a fifth aspect, the present disclosure provides a communication apparatus, which can be a terminal device in the OAM-based communication system described above or a chip or a system on chip in the terminal device, and can also be a functional module in the terminal device for implementing the method of the first aspect described above. The communication apparatus can implement the functions of the terminal device in the first aspect described above, and these functions can be implemented by executing corresponding software by hardware. These hardware or software comprise one or more modules corresponding to the functions described above. The communication apparatus comprises: a first processing module configured to obtain a first OAM mode indicated by a network device; and a first transmission module configured to transmit a control channel according to the first OAM mode after entering a connected state.

[0032] In some possible implementation manners, the first OAM mode comprises one or more OAM mode combinations, and each OAM mode combination comprises at least one OAM mode.

[0033] In some possible implementation manners, the at least one OAM mode comprises an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0034] In some possible implementation manners, the first transmission module is further configured to, when the first OAM mode comprises multiple OAM mode combinations, call the multiple OAM mode combinations to transmit the control channel in turn.

[0035] In some possible implementation, the first transmission module is further configured to receive transmission mode indication information sent by the network device, the transmission mode indication information being used to indicate the first OAM mode; and the first processing module is configured to determine the first OAM mode according to the transmission mode indication information.

[0036] In some possible implementation, the transmission mode indication information comprises an arrangement of one or more OAM mode combinations and a number of the OAM mode combinations.

[0037] In some possible implementation, the first processing module is further configured to obtain a preset second OAM mode when the terminal device performs initial access with the network device; and the first transmission module is further configured to transmit the control channel according to the second OAM mode in the initial access.

[0038] In some possible implementation, the first transmission module is further configured to transmit the control channel according to the second OAM mode after the terminal device enters a connected state, if the terminal device does not obtain the first OAM mode indicated by the network device.

[0039] In some possible implementation, the control channel comprises a PUCCH and / or a PDCCH.

[0040] In a sixth aspect, the present disclosure provides a communication apparatus, which can be a terminal device in the above-mentioned OAM-based communication system or a chip or system on chip in the terminal device, and can also be a functional module in the terminal device for implementing the method in the third aspect. The communication apparatus can implement the functions of the terminal device in the third aspect, and these functions can be implemented by hardware executing corresponding software. These hardware or software comprise one or more modules corresponding to the above-mentioned functions. The communication apparatus comprises: a second processing module configured to obtain a preset third OAM mode when the terminal device performs initial access with the network device; and a second transmission module configured to transmit a control channel according to the preset third OAM mode in the initial access.

[0041] In some possible implementation, the preset third OAM mode comprises one OAM mode, and the third OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0 or an OAM mode with an eigenvalue of 1.

[0042] In some possible implementation, the control channel comprises a PUCCH and / or a PDCCH.

[0043] In a seventh aspect, the present disclosure provides a communication apparatus, which can be a network device in the above-mentioned OAM-based communication system or a chip or system-on-chip in the network device, and can also be a functional module in the network device for implementing the method of the third aspect. The communication apparatus can implement the functions of the network device in the third aspect, which can be implemented by hardware or software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. The communication apparatus includes a third processing module configured to determine a first OAM mode; and a third transmission module configured to indicate the first OAM mode to a terminal device, the first OAM mode being used for the terminal device to transmit a control channel.

[0044] In some possible implementation manners, the first OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode.

[0045] In some possible implementation manners, the at least one OAM mode includes an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0046] In some possible implementation manners, the third transmission module is configured to send, by the network device, transmission mode indication information to the terminal device, the transmission mode indication information being used to indicate the first OAM mode.

[0047] In some possible implementation manners, the transmission mode indication information includes an arrangement manner of the one or more OAM mode combinations and a number of the OAM mode combinations.

[0048] In some possible implementation manners, the third transmission module is configured to, after the third processing module determines the first OAM mode, transmit the control channel according to the first OAM mode after determining that the terminal device enters a connected state.

[0049] In some possible implementation manners, the third processing module is configured to update the first OAM mode after determining that the terminal device enters the connected state.

[0050] In some possible implementation manners, the third processing module is further configured to, before determining the first OAM mode, obtain a preset second OAM mode when the network device performs initial access with the terminal device; and the third transmission module is configured to transmit the control channel according to the second OAM mode in the initial access.

[0051] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0052] In an eighth aspect, the present disclosure provides a communication apparatus, which can be a network device in the above-mentioned OAM-based communication system or a chip or system-on-chip in the network device, and can also be a functional module in the network device for implementing the method of the fourth aspect. The communication apparatus can implement the functions of the network device in the fourth aspect, which can be implemented by hardware or software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. The communication apparatus includes a fourth processing module configured to obtain a preset fourth OAM mode when the network device performs initial access with a terminal device; and a fourth transmission module configured to transmit a control channel according to the fourth OAM mode in the initial access.

[0053] In some possible implementation manners, the fourth OAM mode includes one OAM mode, and the OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0054] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0055] In a ninth aspect, the present disclosure also provides a communication device, such as a terminal device, which can include a memory and a processor connected to the memory and configured to execute computer executable instructions stored in the memory to implement the OAM-based communication method according to any one of the first aspect and the second aspect and possible implementation manners thereof.

[0056] In a tenth aspect, the present disclosure also provides a communication device, such as a network device, which can include a memory and a processor connected to the memory and configured to execute computer executable instructions stored in the memory to implement the OAM-based communication method according to any one of the third aspect and the fourth aspect and possible implementation manners thereof.

[0057] In an eleventh aspect, the present disclosure also provides a computer storage medium storing computer executable instructions, which, when executed by a processor, can implement the OAM-based communication method according to any one of the first aspect to the fourth aspect and possible implementation manners thereof.

[0058] In the present disclosure, the terminal device and the network device transmit a control channel according to an OAM mode with better stability, i.e., one or more of an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1, thereby increasing the robustness of the control channel and improving the reliability of the system.

[0059] It should be understood that the fifth to eleventh aspects of the present disclosure are consistent with the technical solutions in the first to fourth aspects of the present disclosure, and the beneficial effects achieved by each aspect and the corresponding feasible implementation manners are similar, and will not be repeated. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 FIG. 1 is a structural schematic diagram of a communication system in an embodiment of the present disclosure;

[0061] Figure 2 FIG. 2 is a flowchart of a first OAM-based communication method in an embodiment of the present disclosure;

[0062] Figure 3 FIG. 3 is a schematic diagram of electromagnetic waves with different orbital angular momentums in an embodiment of the present disclosure;

[0063] Figure 4 FIG. 4 is a flowchart of a second OAM-based communication method in an embodiment of the present disclosure;

[0064] Figure 5 FIG. 5 is a flowchart of a third OAM-based communication method in an embodiment of the present disclosure;

[0065] Figure 6 FIG. 6 is an implementation flowchart of a fourth OAM-based communication method in an embodiment of the present disclosure;

[0066] Figure 7 FIG. 7 is an implementation flowchart of a fifth OAM-based communication method in an embodiment of the present disclosure;

[0067] Figure 8 FIG. 8 is a flowchart of a sixth OAM-based communication method in an embodiment of the present disclosure;

[0068] Figure 9 FIG. 9 is a flowchart of a seventh OAM-based communication method in an embodiment of the present disclosure;

[0069] Figure 10 FIG. 10 is a flowchart of an eighth OAM-based communication method in an embodiment of the present disclosure;

[0070] Figure 11 FIG. 11 is an implementation flowchart of a ninth OAM-based communication method in an embodiment of the present disclosure

[0071] Figure 12 FIG. 12 is an implementation flowchart of a tenth OAM-based communication method in an embodiment of the present disclosure;

[0072] Figure 13 FIG. 13 is a schematic diagram of a first communication device in an embodiment of the present disclosure;

[0073] Figure 14a schematic diagram of a second communication device in an embodiment of the present disclosure;

[0074] Figure 15 a schematic diagram of a third communication device in an embodiment of the present disclosure;

[0075] Figure 16 a schematic diagram of a fourth communication device in an embodiment of the present disclosure;

[0076] Figure 17 a schematic diagram of a structure of a communication device in an embodiment of the present disclosure;

[0077] Figure 18 a schematic diagram of a structure of a terminal device in an embodiment of the present disclosure;

[0078] Figure 19 a schematic diagram of a structure of a network device in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0079] The illustrative examples set forth herein will be described in the context of examples that represent implementations of the present disclosure. Of course, those skilled in the art will recognize that not all alternatives that have been described will be encompassed by this disclosure and / or claims. It is intended to cover any and all alternatives, modifications, equivalents, and variations that come within the scope of the present disclosure and / or claims. Furthermore, single and multiple

[0080] The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. As used in the description of the present disclosure and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It also will be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0081] It should be understood that although the terms "first," "second," "third," etc. can be used herein to describe various information, the information should not be limited by these terms. These terms are only used to distinguish one piece of information from another. For example, a "first information" can also be termed as a "second information," and similarly, a "second information" can also be termed as a "first information" without departing from the scope of the present disclosure. The word "if' as used herein means "when" or "upon" or "in response to the determination" depending on the context.

[0082] With the continuous development of wireless communication, the requirement for communication capability is also getting higher and higher. Facing future application scenarios such as augmented reality (AR), virtual reality (VR), Internet of Vehicles, Internet of Things, and the like, ultra-high rate, ultra-low latency, and ultra-large bandwidth communication become the norm. In order to meet this requirement, the concept of vortex electromagnetic wave is proposed, and the vortex electromagnetic wave is associated with the orbital angular momentum (OAM) of electromagnetic wave.

[0083] The orbital angular momentum (OAM) of electromagnetic wave is an important physical quantity that is different from the electric field intensity of electromagnetic wave. The electromagnetic wave with OAM can also be called "vortex electromagnetic wave", the phase plane of which presents a spiral shape along the propagation direction, which is no longer a plane electromagnetic wave. The orbital angular momentum of electromagnetic wave provides another dimension in addition to frequency, phase, and space. The electromagnetic waves with integer multiple OAM mode numbers (i.e. eigenvalues, which can be denoted as l) are mutually orthogonal, and multiple orthogonal signals can be transmitted through OAM multiplexing at the same frequency point, thereby improving the spectral efficiency and increasing the channel capacity. The electromagnetic vortex waves with different mode numbers are mutually orthogonal. Therefore, in the process of wireless transmission, multiple signals are modulated on different OAM modes by using the inherent orthogonality of OAM modes, and different channels are distinguished according to the different modes. Since the spiral beam with OAM can constitute an infinite-dimensional Hilbert space, theoretically, the transmission capacity of the same frequency point can be infinite by using OAM multiplexing.

[0084] At present, common OAM-based wireless communication systems, such as OAM communication systems based on uniform circular array (UCA), can be applied to communication systems based on cellular mobile communication technology. Figure 1 For a structure schematic diagram of a communication system in the embodiments of the present disclosure, see Figure 1 As shown in the figure, the communication system 100 can include a terminal device 101 and a network device 102.

[0085] In an embodiment, the terminal device 101 can be a device that provides voice or data connectivity to a user. In some embodiments, the terminal device can also be called a user equipment (UE), a mobile station, a subscriber unit, a station, or a terminal equipment (TE), etc. The terminal device can be a cellular phone, a personal digital assistant (PDA), a wireless modem, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, or a tablet, etc. As wireless communication technology evolves, devices that can access a wireless communication system, communicate with a network side of the wireless communication system, or communicate with other devices through the wireless communication system are all terminal devices in embodiments of the present disclosure. For example, terminals in smart transportation and cars, home devices in smart home, power metering instruments in smart grid, voltage monitoring instruments, environmental monitoring instruments, video monitoring instruments in smart city, cash registers, etc. In embodiments of the present disclosure, the terminal device can communicate with a network device, and multiple terminal devices can also communicate with each other. The terminal device can be static and fixed, or mobile.

[0086] The network device 102 can be a device that supports terminal access to a wireless communication system. For example, it can be an evolved NodeB (eNB) in a 4G access technology communication system, a next generation NodeB (gNB) in a 5G access technology communication system, a transmission reception point (TRP), a relay node, an access point (AP), etc. Of course, the network device 102 can also be an access network device in a next generation wireless access communication network, and embodiments of the present disclosure do not make specific limitations thereto.

[0087] In the embodiments of the present disclosure, in the above communication system, the axes of the transceiving antennas are required to be aligned. When the axes of the transceiving antennas are not aligned, the receiver will generate modal crosstalk, which will increase the bit error rate and degrade the system performance. However, since the control channel (such as PUCCH, PDCCH, etc.) has a high requirement for the stability of the channel, high-quality connection is required in any scenario. Therefore, in the OAM-based communication system, how to ensure the stable transmission of the control channel becomes a problem to be solved.

[0088] To solve the above problems, the embodiments of the present disclosure provide an OAM-based communication method, which can be applied to the terminal device in the above communication system.

[0089] Figure 2 For the flowchart of the first OAM-based communication method in the embodiments of the present disclosure, refer to Figure 2 The method can include the following steps.

[0090] In S201, the terminal device obtains a target OAM mode.

[0091] Here, the target OAM mode can be understood as the transmission mode of the control channel.

[0092] In the embodiments of the present disclosure, the terminal device can obtain the target OAM mode according to the protocol, pre-negotiation with the network device, or the indication of the network device. For example, the terminal device can determine the preset OAM mode (i.e., the second OAM mode, the third OAM mode, or the fourth OAM mode) as the target OAM mode; or, determine the OAM mode indicated by the network device (i.e., the first OAM mode) as the target OAM mode. Optionally, the preset OAM mode and the OAM mode indicated by the network device can be the same or different.

[0093] In an embodiment, the above preset OAM mode can be understood as the OAM mode specified in the protocol (which can be understood as the default OAM mode), or the OAM mode pre-negotiated by the terminal device and the network device. The OAM mode indicated by the network device can be understood as the target OAM mode configured by the network device for the terminal device.

[0094] In actual application, the network device can indicate the target OAM mode to the terminal device through radio resource control (RRC) signaling, downlink control information (DCI), media access control layer control element (MAC CE), or other signaling.

[0095] In some possible embodiments, different OAM modes correspond to different signal to interference plus noise ratios (SINRs) which are affected by different channel parameters. Specifically, the larger the SINR, the higher the stability of the OAM mode, and the smaller the absolute value of the eigenvalue, the larger the SINR of the OAM mode. Therefore, in order to ensure stable transmission of the control channel and improve the robustness of the control channel, the terminal device and the network device can transmit the control channel according to the OAM mode with a smaller absolute value of the eigenvalue. For example, the terminal device and the network device can transmit the control channel according to the OAM mode with an eigenvalue of 0, ±1, ±2, ±3, and the like.

[0096] In some possible embodiments, the target OAM mode can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: the OAM mode with l = -1, the OAM mode with l = 0, or the OAM mode with l = 1. It can be understood that the l of the target OAM mode can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0097] An exemplary Figure 3 For a schematic diagram of different orbital angular momentum electromagnetic waves in the embodiments of the present disclosure, see Figure 3 As shown in the figure, (a) is an electromagnetic wave of the OAM mode with l = -1, (b) is an electromagnetic wave of the OAM mode with l = 0, and (c) is an electromagnetic wave of the OAM mode with l = 1.

[0098] In S202, the terminal device transmits the control channel according to the target OAM mode.

[0099] In some possible implementations, when the target OAM mode includes one OAM mode combination, i.e., the l of the target OAM mode is one of the above combinations, the terminal device can transmit the control channel according to one or more OAM modes in the OAM mode combination. For example, when the l of the target OAM mode is [-1], the terminal device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1). Figure 3 Or, when the l of the target OAM mode is [-1, 1], the terminal device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1) and the OAM mode with l = 1 (i.e., the OAM mode shown in (c) of FIG. 1) in parallel. Figure 3 Or, when the l of the target OAM mode is [-1, 1], the terminal device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1) and the OAM mode with l = 1 (i.e., the OAM mode shown in (c) of FIG. 1) in parallel. Figure 3 Or, when the l of the target OAM mode is [-1, 1], the terminal device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1) and the OAM mode with l = 1 (i.e., the OAM mode shown in (c) of FIG. 1) in parallel.

[0100] In some possible implementations, when the target OAM mode includes multiple OAM mode combinations, i.e., when l of the target OAM mode is one of the combinations mentioned above, the terminal device can poll and call multiple OAM mode combinations to transmit the control channel. For example, if l of the target OAM mode is [-1] and [0], the terminal device can first use the OAM mode with l = -1 (i.e., ... Figure 3 The OAM mode shown in (a) transmits the control channel, and then follows the OAM mode with l=0 (i.e., Figure 3 The OAM mode shown in (b) transmits the control channel. Alternatively, if the target OAM mode has l = [0] and [-1, 1], the terminal device can first use the OAM mode with l = 0 (i.e., Figure 3 The OAM mode shown in (c) transmits the control channel, and then follows the OAM mode with l = -1 (i.e. Figure 3 The OAM mode shown in (a) and the OAM mode with l=1 (i.e.) Figure 3 The OAM mode shown in (c) is a parallel transmission control channel.

[0101] Of course, the above OAM mode combinations are only examples and do not specifically limit the target OAM mode.

[0102] This completes the transmission of the control channel.

[0103] In this embodiment of the disclosure, the terminal device transmits the control channel according to one or more OAM modes with better stability, namely, OAM mode with an eigenvalue of -1, OAM mode with an eigenvalue of 0, and OAM mode with an eigenvalue of 1.

[0104] In this embodiment of the disclosure, an OAM-based communication method is also provided, which can be applied to terminal devices in the above-mentioned communication system.

[0105] Figure 4 This is a flowchart illustrating the second OAM-based communication method in this disclosure. See [link / reference]. Figure 4 As shown, the method may include:

[0106] S401, when the terminal device performs initial access, it determines the preset OAM mode (i.e., the second OAM mode or the third OAM mode) as the target OAM mode.

[0107] Here, the preset OAM mode can be understood as the transmission mode of the control channel.

[0108] It can be understood that there is no signaling interaction between the terminal device and the network device before the terminal device initially accesses the network device. Then, in the process of the terminal device initially accessing the network device, the terminal device and the network device can transmit the control channel according to the OAM mode (that is, the default OAM mode) specified by the protocol.

[0109] In some possible embodiments, the SINR corresponding to different OAM modes is different due to the influence of different channel parameters. Specifically, the larger the SINR is, the higher the stability of the OAM mode is, and the smaller the absolute value of the eigenvalue is, the larger the SINR of the OAM mode is. Then, in order to ensure the stable transmission of the control channel and improve the robustness of the control channel, the terminal device and the network device can transmit the control channel according to the OAM mode with a smaller absolute value of the eigenvalue. For example, the terminal device and the network device can transmit the control channel according to the OAM mode with an eigenvalue of 0, ±1, ±2, ±3, and the like.

[0110] In some possible embodiments, the preset OAM mode can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: the OAM mode with l = -1, the OAM mode with l = 0, or the OAM mode with l = 1. It can be understood that the l of the target OAM mode can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0111] An exemplary Figure 3 For a schematic diagram of the different orbital angular momentum electromagnetic waves in the embodiments of the present disclosure, see Figure 3 As shown in the figure, (a) is an electromagnetic wave of the OAM mode with l = -1, (b) is an electromagnetic wave of the OAM mode with l = 0, and (c) is an electromagnetic wave of the OAM mode with l = 1.

[0112] S402, the terminal device transmits the control channel according to the target OAM mode.

[0113] Here, the execution process of S402 can refer to the specific description of S202 in the embodiments of the present disclosure, which will not be repeated here. Figure 2 The specific description of S202 in the embodiments of the present disclosure will not be repeated here.

[0114] Up to now, the transmission of the control channel is completed.

[0115] In the embodiments of the present disclosure, in the process of the terminal device initially accessing the network device, the terminal device transmits the control channel according to the OAM mode with better stability, that is, one or more of the OAM mode with an eigenvalue of -1, the OAM mode with an eigenvalue of 0, and the OAM mode with an eigenvalue of 1.

[0116] In the embodiments of the present disclosure, a communication method based on OAM modes is also provided, which can be applied to the terminal device in the communication system.

[0117] Figure 5 For a flowchart of a third communication method based on OAM in the embodiments of the present disclosure, referring to FIG. 6, the method can include the following steps. Figure 5

[0118] S501, the terminal device obtains the OAM mode (i.e., the first OAM mode) indicated by the network device.

[0119] In some possible implementation manners, the terminal device can receive the transmission mode indication information sent by the network device, and the transmission mode indication information is used to indicate the OAM mode configured by the network device for the terminal device, so that the terminal device can determine the target OAM mode according to the transmission mode indication information.

[0120] In actual application, the network device can set corresponding index values for different OAM modes, and the network device sends the index value corresponding to the target OAM mode to the terminal device, so that the terminal device determines the target OAM mode according to the index value. Alternatively, the network device can directly send the eigenvalue of the target OAM mode to the terminal device, so that the terminal device determines the target OAM mode according to the eigenvalue. Of course, the network device can also set other identifiers for different OAM modes to represent the target OAM mode configured for the terminal device.

[0121] In some possible implementation manners, the network device can indicate the target OAM mode to the terminal device through RRC signaling, DCI, MAC CE, etc.

[0122] It should be noted that the OAM mode indicated by the network device can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: the OAM mode of l = -1, the OAM mode of l = 0 or the OAM mode of l = 1. It can be understood that the l of the OAM mode can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0123] In actual application, S501 can be performed in the process that the terminal device accesses (such as initial access, re-access, etc.) the network device, or can be performed when the network device updates the OAM mode configuration. Of course, it can also be performed at other times, and the embodiments of the present disclosure do not make specific limitation in this regard.

[0124] S502, the terminal device determines the OAM mode indicated by the network device as the target OAM mode after entering the connected state. ​

[0125] Here, the terminal device enters the connected state after accessing the network device. Next, the terminal device can determine the OAM mode indicated by the network device in S501 as the target OAM mode for subsequent control channel transmission.

[0126] S503, the terminal device transmits the control channel according to the target OAM mode.

[0127] Here, the execution process of S503 can refer to the specific description of S202 in the embodiment, which will not be repeated here. Figure 2 The specific description of S202 in the embodiment will not be repeated here.

[0128] In some possible implementation manners, Figure 6 For the implementation flowchart of the fourth OAM-based communication method in the embodiment of the present disclosure, refer to Figure 6 As shown in the figure, after the terminal device completes the initial access by transmitting the control channel according to the preset OAM mode in S401-S402, the terminal device enters the connected state. After that, if the network device indicates the target OAM mode to the terminal device, the terminal device executes S501-S502. Otherwise, if the network device does not indicate the target OAM mode to the terminal device, the above method further includes: S504, the terminal device determines the preset OAM mode as the target OAM mode after entering the connected state, that is, the terminal device still confirms the preset OAM mode as the target OAM mode. Next, the terminal device continues to execute S503 after determining the target OAM mode.

[0129] It can be understood that, in the embodiment of Figure 6 In the embodiment, the terminal device uses the preset OAM mode as the target OAM mode to transmit the control channel in the initial access process. After the terminal device completes the initial access and enters the connected state, the terminal device can use the OAM mode indicated by the network device as the target OAM mode to transmit the control signal. After the terminal device enters the connected state, if the network device does not indicate the OAM mode, the terminal device still uses the preset OAM mode as the target OAM mode to transmit the control channel.

[0130] In some possible implementation manners, one or more OAM mode combinations can be arranged in a fixed order. The network device can configure the arrangement mode and the number of one or more OAM mode combinations for the terminal device and indicate them to the terminal device.

[0131] Figure 7 For the implementation flowchart of the fifth OAM-based communication method in the embodiment of the present disclosure, refer to Figure 7 As shown in the figure, the above method includes:

[0132] S701, the terminal device obtains an arrangement manner and a quantity of OAM mode combinations indicated by the network device.

[0133] S702, the terminal device determines a target OAM mode according to the arrangement manner and the quantity of OAM mode combinations indicated by the network device.

[0134] Here, in S701-S702, one or more OAM mode combinations can be arranged in a fixed order, such as OAM mode l can be arranged in the following order: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1]. The network device can indicate the above arrangement manner and the quantity of OAM mode combinations to the terminal device. For example, the network device indicates the above arrangement order to the terminal device, and indicates that the quantity of OAM mode combinations is 3. At this time, the l of the OAM mode indicated by the network device is [0], [1], [-1], that is, the first three OAM mode combinations in the above arrangement order. Then, the terminal device determines the OAM mode with l as [0], [1], [-1] as the target OAM mode. Of course, the arrangement order of one or more OAM mode combinations can also be other orders, and the embodiments of the present disclosure are not limited specifically.

[0135] S703, the terminal device transmits a control channel according to the target OAM mode.

[0136] Here, the execution process of S703 can refer to the specific description of S202 in the embodiment, which will not be repeated here. Figure 2

[0137] By now, the transmission of the control channel is completed.

[0138] In the embodiments of the present disclosure, in the process of initial access of the terminal device, the terminal device transmits the control channel according to the OAM mode with better stability, that is, one or more of the OAM mode with eigenvalue -1, the OAM mode with eigenvalue 0, and the OAM mode with eigenvalue 1, thereby increasing the robustness of the control channel and improving the reliability of the system.

[0139] Based on the same inventive concept, the embodiments of the present disclosure also provide an OAM-based communication method, which can be applied to the network device in the above communication system.

[0140] Figure 8 For the flowchart of the sixth OAM-based communication method in the embodiments of the present disclosure, refer to Figure 8 As shown in the figure, the method can include:

[0141] S801, the network device determines a target OAM mode.

[0142] ​Here, the target OAM mode can be understood as a transmission mode of the control channel.

[0143] In the embodiments of the present disclosure, the network device can determine the target OAM mode according to a protocol, pre-negotiation with the terminal device, or data delay and data volume transmission requirements. For example, the network device can determine a preset OAM mode (i.e., the second OAM mode or the fourth OAM mode) as the target OAM mode; or the network device can determine the target OAM mode (e.g., the first OAM mode) according to data delay and data volume transmission requirements.

[0144] In an embodiment, the preset OAM mode can be understood as an OAM mode defined in a protocol (which can be understood as a default OAM mode), or an OAM mode pre-negotiated by the terminal device and the network device. The OAM mode determined by the network device can be understood as a target OAM mode determined by the network device according to data delay and data volume transmission requirements.

[0145] In some possible embodiments, the SINR corresponding to different OAM modes is different due to the influence of different channel parameters. Specifically, the larger the SINR is, the higher the stability of the OAM mode is, and the smaller the absolute value of the eigenvalue is, the larger the SINR of the OAM mode is. Therefore, in order to ensure the stable transmission of the control channel and improve the robustness of the control channel, the terminal device and the network device can transmit the control channel according to the OAM mode with a smaller absolute value of the eigenvalue. For example, the terminal device and the network device can transmit the control channel according to the OAM mode with an eigenvalue of 0, ±1, ±2, ±3, and the like.

[0146] In some possible embodiments, the OAM mode determined by the network device can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: the OAM mode with l = -1, the OAM mode with l = 0, or the OAM mode with l = 1. It can be understood that the l of the OAM mode determined by the network device can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0147] For example, still referring to Figure 3 As shown in (a), the electromagnetic wave of the OAM mode with l = -1, (b) is the electromagnetic wave of the OAM mode with l = 0, and (c) is the electromagnetic wave of the OAM mode with l = 1.

[0148] In some possible implementation, after S801, the above method further includes: the network device indicates the target OAM mode (i.e., the OAM mode determined by the network device) to the terminal device. Illustratively, the network device can indicate the target OAM mode to the terminal device by sending RRC signaling, DCI, MAC CE or other signaling.

[0149] S802, the network device transmits the control channel according to the target OAM mode.

[0150] In some possible implementation, when the target OAM mode includes one OAM mode combination, i.e., the l of the target OAM mode is one of the above combinations, the network device can transmit the control channel according to one or more OAM modes in the OAM mode combination. For example, the l of the target OAM mode is [-1], the network device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes one OAM mode combination, i.e., the l of the target OAM mode is one of the above combinations, the network device can transmit the control channel according to one or more OAM modes in the OAM mode combination. For example, the l of the target OAM mode is [-1], the network device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes one OAM mode combination, i.e., the l of the target OAM mode is one of the above combinations, the network device can transmit the control channel according to one or more OAM modes in the OAM mode combination. For example, the l of the target OAM mode is [-1], the network device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes one OAM mode combination, i.e., the l of the target OAM mode is one of the above combinations, the network device can transmit the control channel according to one or more OAM modes in the OAM mode combination. For example, the l of the target OAM mode is [-1], the network device can transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1).

[0151] In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1). Figure 3 In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1). Figure 9 In some possible implementation, when the target OAM mode includes multiple OAM mode combinations, i.e., the l of the target OAM mode is multiple of the above combinations, the network device can call the multiple OAM mode combinations in turn to transmit the control channel. For example, the l of the target OAM mode is [-1] and [0], the network device can first transmit the control channel according to the OAM mode with l = -1 (i.e., the OAM mode shown in (a) of FIG. 1), and then transmit the control channel according to the OAM mode with l = 0 (i.e., the OAM mode shown in (b) of FIG. 1).

[0152] Of course, the above OAM mode combinations are only examples and do not specifically limit the target OAM mode.

[0153] So far, the transmission of the control channel is completed.

[0154] In the embodiments of the present disclosure, the network device transmits the control channel in one or more OAM modes with better stability, i.e., one or more of the OAM modes with eigenvalue of -1, the OAM modes with eigenvalue of 0, and the OAM modes with eigenvalue of 1.

[0155] In the embodiments of the present disclosure, a communication method based on OAM is also provided, which can be applied to the network device in the communication system.

[0156] Figure 9 For a flowchart of the seventh communication method based on OAM in the embodiments of the present disclosure, refer to Figure 3 As shown in the figure, the method can include:

[0157] S901, when the terminal device initially accesses the network device, the network device determines a preset OAM mode (i.e., the fourth OAM mode) as the target OAM mode.

[0158] Here, the target OAM mode can be understood as the transmission mode of the control channel.

[0159] It can be understood that before the terminal device initially accesses, there is no signaling interaction between the terminal device and the network device. Then, in the process of the terminal device initially accessing the network device, the terminal device and the network device can transmit the control channel according to the OAM mode specified by the protocol.

[0160] In some possible embodiments, the SINR corresponding to different OAM modes is different due to the influence of different channel parameters. Specifically, the larger the SINR is, the higher the stability of the OAM mode is, and the smaller the absolute value of the eigenvalue is, the larger the SINR of the OAM mode is. Then, in order to ensure the stable transmission of the control channel and improve the robustness of the control channel, the terminal device and the network device can transmit the control channel according to the OAM mode with smaller absolute value of the eigenvalue. For example, the terminal device and the network device can transmit the control channel according to the OAM modes with eigenvalue of 0, ±1, ±2, ±3, etc.

[0161] In some possible embodiments, the preset OAM mode can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: the OAM mode with l = -1, the OAM mode with l = 0, or the OAM mode with l = 1. It can be understood that the l of the target OAM mode can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0162] For example, Figure 3 For a schematic diagram of the electromagnetic wave with different orbital angular momentums in the embodiments of the present disclosure, refer to Figure 8As shown, (a) is an electromagnetic wave of an OAM mode with l = -1, (b) is an electromagnetic wave of an OAM mode with l = 0, and (c) is an electromagnetic wave of an OAM mode with l = 1.

[0163] S902, the network device transmits the control channel according to the target OAM mode.

[0164] Here, the execution process of S902 can refer to the specific description of S802 in the embodiments, which will not be repeated here. Figure 10 The specific description of S802 in the embodiments will not be repeated here.

[0165] Up to now, the transmission of the control channel is completed.

[0166] In the embodiments of the present disclosure, the network device transmits the control channel according to one or more OAM modes with better stability, i.e., an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1, thereby increasing the robustness of the control channel and improving the reliability of the system.

[0167] In the embodiments of the present disclosure, a communication method based on OAM is also provided, which can be applied to the network device in the communication system.

[0168] Figure 10 For the flowchart of the eighth communication method based on OAM in the embodiments of the present disclosure, refer to Figure 8 As shown, the method can include:

[0169] S1001, the network device determines a target OAM mode (i.e., a second OAM mode).

[0170] Here, the target OAM mode can be understood as the transmission mode of the control channel.

[0171] In an embodiment, the network device can determine the target OAM mode according to the transmission requirements of the data delay and the data amount.

[0172] In some possible embodiments, the SINR corresponding to different OAM modes is different due to the influence of different channel parameters. Specifically, the larger the SINR is, the higher the stability of the OAM mode is, and the smaller the absolute value of the eigenvalue is, the larger the SINR of the OAM mode is. Then, in order to ensure the stable transmission of the control channel and improve the robustness of the control channel, the terminal device and the network device can transmit the control channel according to the OAM mode with a smaller absolute value of the eigenvalue. For example, the terminal device and the network device can transmit the control channel according to the OAM mode with an eigenvalue of 0, ±1, ±2, ±3, etc.

[0173] In some possible embodiments, the OAM mode determined by the network device can include one or more OAM mode combinations, and each OAM mode combination can include at least one of the following OAM modes: an OAM mode of l = -1, an OAM mode of l = 0, or an OAM mode of l = 1. It can be understood that the l of the OAM mode can include one or more of the following combinations: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1].

[0174] S1002, the network device indicates a target OAM mode to the terminal device.

[0175] In some possible implementations, the network device can send transmission mode indication information to the terminal device, where the transmission mode indication information is used to indicate the target OAM mode to the terminal device, so that the terminal device can determine the target OAM mode according to the transmission mode indication information.

[0176] In actual application, the network device can set an index value for different OAM modes, and the network device can send the index value of the target OAM to the terminal device, so that the terminal device can determine the target OAM mode according to the index value. Alternatively, the network device can directly send the eigenvalue of the target OAM mode to the terminal device, so that the terminal device can determine the target OAM mode according to the eigenvalue. Of course, the network device can also set other identifiers for different OAM modes to represent the target OAM mode determined by the network device, so as to determine the target OAM mode by the terminal device.

[0177] In some possible implementations, the network device can indicate the target OAM mode to the terminal device through RRC signaling, DCI, MAC CE, or the like.

[0178] In actual application, S1001 and S1002 can be executed in the process that the terminal device accesses (such as initial access, re-access, or the like) the network device, or can be executed when the network device updates the OAM mode configuration. Of course, it can also be executed at other times, and the embodiments of the present disclosure do not make specific limitation thereto.

[0179] S1003, after the terminal device enters the connected state, the network device transmits a control channel according to the target OAM mode.

[0180] Here, the terminal device enters the connected state after accessing the network device. Next, the network device can determine the OAM mode in S1001 as the target OAM mode, and indicate it to the terminal device for subsequent control channel transmission.

[0181] Here, the execution process of S1003 can be referred to Figure 11The specific description of S802 in the embodiment is not repeated here.

[0182] In some possible implementation manners, Figure 11 FIG. 9 is an implementation flowchart of a ninth OAM-based communication method according to an embodiment of the present disclosure. Figure 11 As shown in FIG. 9, after the terminal device completes initial access by transmitting a control channel in a preset OAM mode according to S901 and S902, the terminal device enters a connected state. After that, if the network device needs to indicate the preset OAM mode to the terminal device, the network device performs S1002. Otherwise, if the network device does not need to indicate the target OAM mode to the terminal device, the method further includes: S1004, the network device determines the preset OAM mode as the target OAM mode after the terminal device enters the connected state, that is, the network device still confirms the default OAM mode as the target OAM mode. Next, the network device performs S1003.

[0183] It can be understood that, in the embodiment of Figure 12 In the embodiment, the network device takes the preset OAM mode as the target OAM mode to transmit a control channel during the initial access process of the terminal device. After the terminal device completes the initial access and enters the connected state, the network device can indicate the target OAM mode to the terminal device for the terminal device to transmit a control signal. After the terminal device enters the connected state, if the network device does not need to indicate the target OAM mode to the terminal device, the network device still takes the preset OAM mode as the target OAM mode to transmit a control channel.

[0184] In some possible implementation manners, one or more OAM mode combinations can be arranged in a fixed order. The network device can configure the arrangement manner and the number of the one or more OAM mode combinations for the terminal device, and indicate the arrangement manner and the number to the terminal device. Figure 12 FIG. 10 is an implementation flowchart of a tenth OAM-based communication method according to an embodiment of the present disclosure. Figure 8 As shown in FIG. 10, the method includes:

[0185] S1201, the network device sets a fixed order of one or more OAM mode combinations.

[0186] S1202, the network device indicates the arrangement manner and the number of the OAM mode combinations of the target OAM mode to the terminal device.

[0187] Here, in S1201-S1202, the network device arranges one or more OAM mode combinations in a fixed order, such as the l of the OAM mode can be arranged in the following order: [0], [1], [-1], [-1, 1], [0, -1], [0, 1], [-1, 0, 1]. The network device can determine one or more OAM mode combinations in the above-mentioned fixed order as the target OAM mode, and indicate the above-mentioned arrangement to the terminal device and the number of OAM mode combinations. For example, the network device indicates the above-mentioned arrangement order and the number of OAM mode combinations to the terminal device is 3. At this time, the l of the OAM mode indicated by the network device is [0], [1], [-1], that is, the first three OAM mode combinations in the above-mentioned arrangement order. Then, the terminal device can determine the OAM mode with l as [0], [1], [-1] as the target OAM mode. Of course, the arrangement order of one or more OAM mode combinations can also be other orders, which are not limited in the embodiments of the present disclosure.

[0188] In S1203, the network device transmits the control channel according to the target OAM mode.

[0189] Here, the execution process of S1203 can refer to the specific description of S802 in the embodiments, which is not repeated here. Figure 13 The specific description of S802 in the embodiments is not repeated here.

[0190] At this point, the transmission of the control channel is completed.

[0191] In the embodiments of the present disclosure, the network device transmits the control channel according to the OAM mode with better stability, that is, one or more of the OAM mode with eigenvalue -1, the OAM mode with eigenvalue 0, and the OAM mode with eigenvalue 1, thereby increasing the robustness of the control channel and improving the reliability of the system.

[0192] Based on the same inventive concept, the embodiments of the present disclosure provide a communication apparatus, which can be the terminal device in the above-mentioned OAM-based communication system or a chip or system on chip in the terminal device, and can also be a functional module in the terminal device for implementing the method of the first aspect. The communication apparatus can implement the functions performed by the terminal device in the first aspect, which can be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-mentioned functions. Figure 13 For the schematic diagram of the first communication apparatus in the embodiments of the present disclosure, refer to Figures 2 to 7 As shown in the figure, the communication apparatus 130 can include: a first processing module 131, configured to obtain the first OAM mode indicated by the network device; and a first transmission module 132, configured to transmit the control channel according to the first OAM mode after entering the connected state.

[0193] In some possible implementation manners, the first OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode.

[0194] In some possible implementation manners, the at least one OAM mode includes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1.

[0195] In some possible implementation manners, the first transmission module 132 is further configured to, when the first OAM mode includes a plurality of OAM mode combinations, call the plurality of OAM mode combinations to transmit the control channel in turn.

[0196] In some possible implementation manners, the first transmission module 132 is further configured to receive transmission mode indication information sent by the network device, where the transmission mode indication information is used to indicate the first OAM mode, and the first processing module 131 is configured to determine the first OAM mode according to the transmission mode indication information.

[0197] In some possible implementation manners, the transmission mode indication information includes arrangement manners of one or more OAM mode combinations and a quantity of the OAM mode combinations.

[0198] In some possible implementation manners, the first processing module 131 is further configured to obtain a preset second OAM mode when performing initial access with the network device, and the first transmission module 132 is further configured to transmit the control channel according to the second OAM mode in the initial access.

[0199] In some possible implementation manners, the first transmission module 132 is further configured to, if the terminal device does not obtain the first OAM mode indicated by the network device, transmit the control channel according to a second OAM mode after the terminal device enters a connected state.

[0200] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0201] It should be noted that specific implementation processes of the first processing module 131 and the first transmission module 132 can refer to the detailed description of the embodiments, which will not be described here again for the sake of brevity of the description. Figure 14 In some possible implementation manners, the first processing module 131 and the first transmission module 132 can be implemented by one or more processors.

[0202] The first transmission module 132 mentioned in the embodiments of the present disclosure can be a transceiver interface, a transceiver circuit or a transceiver, and the first processing module 131 can be one or more processors.

[0203] Based on the same inventive concept, the embodiments of the present disclosure provide a communication apparatus, which can be a terminal device in the OAM-based communication system or a chip or system on chip in the terminal device, and can also be a functional module in the terminal device for implementing the method of the first aspect. The communication apparatus can implement the functions of the terminal device in the first aspect, and these functions can be implemented by hardware or software. The hardware or software includes one or more modules corresponding to the functions. Figure 13 FIG. 2 shows a schematic diagram of a second communication apparatus according to an embodiment of the present disclosure. As shown in FIG. 2, the communication apparatus 140 can include a second processing module 141 configured to obtain a preset OAM mode when a terminal device performs initial access with a network device, and a second transmission module 142 configured to transmit a control channel according to the preset OAM mode in the initial access. Figures 2 to 4

[0204] In some possible implementation manners, the preset OAM mode includes one OAM mode, and the OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0205] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0206] It should be noted that the specific implementation process of the second processing module 141 and the second transmission module 142 can refer to the detailed description of the embodiments of the present disclosure, which will not be repeated here for the sake of brevity of the description. Figure 15

[0207] The second transmission module 142 mentioned in the embodiments of the present disclosure can be a transceiver interface, a transceiver circuit, or a transceiver, and the second processing module 141 can be one or more processors.

[0208] Based on the same inventive concept, the embodiments of the present disclosure provide a communication apparatus, which can be a network device in the OAM-based communication system or a chip or system on chip in the network device, and can also be a functional module in the network device for implementing the method of the first aspect. The communication apparatus can implement the functions of the network device in the first aspect, and these functions can be implemented by hardware or software. The hardware or software includes one or more modules corresponding to the functions. Figure 15 FIG. 3 shows a schematic diagram of a third communication apparatus according to an embodiment of the present disclosure. As shown in FIG. 3, the communication apparatus 150 can include a third processing module 151 configured to determine a first OAM mode, and a third transmission module 152 configured to indicate the first OAM mode to a terminal device, and the first OAM mode is used by the terminal device to transmit a control channel. Figures 8 to 12

[0209] ​​​In some possible implementation manners, the first OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode.

[0210] In some possible implementation manners, the at least one OAM mode includes an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0211] In some possible implementation manners, the third transmission module 152 is configured to send, by the network device, transmission mode indication information to the terminal device, where the transmission mode indication information is used to indicate the first OAM mode.

[0212] In some possible implementation manners, the transmission mode indication information includes arrangement manners of one or more OAM mode combinations and a quantity of the OAM mode combinations.

[0213] In some possible implementation manners, the third transmission module 152 is configured to, after the third processing module 151 determines the first OAM mode, transmit, according to the first OAM mode, the control channel after determining that the terminal device enters the connected state.

[0214] In some possible implementation manners, the third processing module 151 is configured to update the first OAM mode after determining that the terminal device enters the connected state.

[0215] In some possible implementation manners, the third processing module 151 is further configured to, before determining the first OAM mode, obtain a preset second OAM mode when the network device performs initial access with the terminal device, and the third transmission module 152 is configured to transmit, according to the second OAM mode, the control channel in the initial access.

[0216] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0217] It should be noted that specific implementation processes of the third processing module 151 and the third transmission module 152 can refer to the detailed description of the embodiments. Figure 16 For the sake of brevity of the description, the specific implementation processes of the third processing module 151 and the third transmission module 152 will not be described here again.

[0218] The third transmission module 152 mentioned in the embodiments of the present disclosure can be a transceiver interface, a transceiver circuit, or a transceiver, etc., and the third processing module 151 can be one or more processors.

[0219] Based on the same inventive concept, the embodiments of the present disclosure provide a communication apparatus, which can be a network device in the above-mentioned OAM-based communication system or a chip or system-on-chip in the network device, and can also be a functional module in the network device for implementing the method of the first aspect. The communication apparatus can implement the functions performed by the network device in the first aspect, and these functions can be implemented by hardware or software. These hardware or software include one or more modules corresponding to the above-mentioned functions. Figure 16 FIG. 17 is a schematic diagram of a fourth communication apparatus according to an embodiment of the present disclosure; Figures 8 to 9 As shown in FIG. 17, the communication apparatus 160 includes a fourth processing module 161 and a fourth transmission module 162. The fourth processing module 161 is configured to obtain a preset fourth OAM mode when the network device performs initial access with the terminal device. The fourth transmission module 162 is configured to transmit a control channel according to the fourth OAM mode in the initial access.

[0220] In some possible implementation manners, the fourth OAM mode includes one OAM mode, and the OAM mode is an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

[0221] In some possible implementation manners, the control channel includes a PUCCH and / or a PDCCH.

[0222] It should be noted that the specific implementation process of the fourth processing module 161 and the fourth transmission module 162 can refer to the detailed description of the embodiments of the present disclosure, which will not be described here for the sake of brevity of the description. Figure 17

[0223] The fourth transmission module 162 mentioned in the embodiments of the present disclosure can be a transceiver interface, a transceiver circuit, or a transceiver, etc. The fourth processing module 161 can be one or more processors.

[0224] It should be noted that in the embodiments of the present disclosure, the second OAM mode, the third OAM mode, or the fourth OAM mode can be understood as a preset OAM mode. The first OAM mode can be understood as an OAM mode indicated by the network device or an OAM mode determined by the network device for itself.

[0225] Based on the same inventive concept, the embodiments of the present disclosure provide a communication apparatus, which can be a network device in the above-mentioned OAM-based communication system or a chip or system-on-chip in the network device, and can also be a functional module in the network device for implementing the method of the first aspect. The communication apparatus can implement the functions performed by the network device in the first aspect, and these functions can be implemented by hardware or software. These hardware or software include one or more modules corresponding to the above-mentioned functions. Figure 17 FIG. 17 is a schematic diagram of a fourth communication apparatus according to an embodiment of the present disclosure; Figure 13 As shown in FIG. 17, the communication apparatus 160 includes a fourth processing module 161 and a fourth transmission module 162. The fourth processing module 161 is configured to obtain a preset fourth OAM mode when the network device performs initial access with the terminal device. The fourth transmission module 162 is configured to transmit a control channel according to the fourth OAM mode in the initial access.

[0226] ​In some possible implementation manners, the memory 172 can include computer storage media in the form of volatile and / or non-volatile memory, such as read-only memory (ROM) and / or random access memory (RAM). The memory 172 can store operating systems, application programs, other program modules, executable code, program data, user data, and the like.

[0227] The input device 174 can be used to input commands and information into the communication device, and the input device 174 can be, for example, a keyboard or a pointing device, such as a mouse, trackball, touchpad, microphone, joystick, game pad, satellite television antenna, scanner, or the like. These input devices can be connected to the processor 171 through the bus 173.

[0228] The output device 175 can be used to output information from the communication device, and in addition to the monitor, the output device 175 can also be other peripheral output devices, such as a speaker and / or a printing device, which can also be connected to the processor 171 through the bus 173.

[0229] The communication device can be connected to a network, for example, a local area network (LAN), through the antenna 176. In a networking environment, the computer-executable instructions stored in the control device can be stored in a remote storage device, and are not limited to being stored locally.

[0230] When the processor 171 in the communication device executes the executable code or application program stored in the memory 172, the communication device performs the OAM-based communication method on the terminal device side or the access network device side in the above embodiments, and the specific execution process is described above and will not be repeated here.

[0231] In addition, the memory 172 described above stores computer-executable instructions for implementing the functions of the first processing module 131 and the first transmission module 132 in the above embodiments, and the functions of the second processing module 141 and the second transmission module 142 in the above embodiments. Figure 14 Figure 13 The functions / implementation processes of the first processing module 131 and the first transmission module 132 in the above embodiments and the second processing module 141 and the second transmission module 142 in the above embodiments can be implemented by calling the computer-executable instructions stored in the memory 172 by the processor 171 in the above embodiments. Figure 14 Figure 17 The functions / implementation processes of the first processing module 131 and the first transmission module 132 in the above embodiments and the second processing module 141 and the second transmission module 142 in the above embodiments can be implemented by calling the computer-executable instructions stored in the memory 172 by the processor 171 in the above embodiments. Figure 15

[0232] In addition, the memory 172 described above stores computer-executable instructions for implementing the functions of the third processing module 151 and the third transmission module 152 in the above embodiments, and the functions of the fourth processing module 161 and the fourth transmission module 162 in the above embodiments. Figure 16 Figure 15 The functions / implementation processes of the third processing module 151 and the third transmission module 152 in the above embodiments and the fourth processing module 161 and the fourth transmission module 162 in the above embodiments can be implemented by calling the computer-executable instructions stored in the memory 172 by the processor 171 in the above embodiments.​​​​Figure 16 the third processing module 151 and the third transmission module 152 in the third device 150, and Figure 17 the fourth processing module 161 and the fourth transmission module 162 in the fourth device 160. Figure 18 The functions / implementation procedures of the fourth processing module 161 and the fourth transmission module 162 in the fourth device 160 can be implemented by the processor 171 invoking the computer-executed instructions stored in the memory 172, and the specific implementation procedures and functions refer to the related embodiments above.

[0233] Based on the same inventive concept, the embodiments of the present disclosure provide a terminal device, which is consistent with the terminal device in one or more embodiments described above. Optionally, the terminal device can be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0234] Figure 18 FIG. 18 shows a structural schematic diagram of a terminal device according to an embodiment of the present disclosure. Figure 19 As shown in FIG. 18, the terminal device 180 can include one or more of the following components: a processing component 181, a memory 182, a power supply component 183, a multimedia component 184, an audio component 185, an input / output (I / O) interface 186, a sensor component 187, and a communication component 188.

[0235] The processing component 181 usually controls overall operations of the terminal device 180, such as operations associated with displaying, making phone calls, data communications, camera operations, and recording operations. The processing component 181 can include one or more processors 1810 to execute instructions to complete all or part of steps of the methods described above. Further, the processing component 181 can include one or more modules to facilitate the interaction between the processing component 181 and other components. For example, the processing component 181 can include a multimedia module to facilitate the interaction between the multimedia component 184 and the processing component 181.

[0236] The memory 182 is configured to store various types of data to support operations of the terminal device 180. Examples of the data include instructions for any application or method operating on the terminal device 180, contact data, phonebook data, messages, pictures, videos, etc. The memory 182 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0237] The power component 183 supplies power to various components of the terminal device 180. The power component 183 can include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the terminal device 180.

[0238] The multimedia component 184 includes a screen providing an output interface between the terminal device 180 and a user. In some embodiments, the screen can include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes the touch panel, the screen can be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense a touch, a slide, and a gesture on the touch panel. The touch sensor can not only sense a boundary of a touching or a sliding action, but also detect duration and pressure related to the touching or sliding action. In some embodiments, the multimedia component 184 includes a front camera and / or a rear camera. When the device 180 is in an operation mode, such as a shooting mode or a video mode, the front camera and / or the rear camera can receive external multimedia data. Each of the front camera and the rear camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0239] The audio component 185 is configured to output and / or input an audio signal. For example, the audio component 185 includes a microphone (MIC) configured to receive an external audio signal when the terminal device 180 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 182 or transmitted via the communication component 188. In some embodiments, the audio component 185 also includes a speaker for outputting an audio signal.

[0240] The I / O interface 186 provides an interface between the processing component 181 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0241] The sensor component 187 includes one or more sensors to provide status assessments for various aspects of the terminal device 180. For example, the sensor component 187 can detect an open / closed state of the device 180, relative positioning of components, such as a display and keypad of the terminal device 180, a change in position of the terminal device 180 or a component of the terminal device 180, presence or absence of user contact with the terminal device 180, orientation or acceleration / deceleration of the terminal device 180, and temperature changes of the terminal device 180. The sensor component 187 can include a proximity sensor configured to detect presence of a nearby object without any physical contact. The sensor component 187 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor component 187 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0242] The communication component 188 is configured to facilitate wired or wireless communication between the terminal device 180 and another device. The terminal device 180 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, or 3G, or a combination thereof. In an example embodiment, the communication component 188 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an example embodiment, the communication component 188 further includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0243] In an example embodiment, the terminal device 180 can be implemented with one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements to perform the above-described methods.

[0244] Based on the same inventive concept, the embodiments of the present disclosure provide a network device, which is consistent with the network device in one or more of the above embodiments.

[0245] Figure 19 For a structural schematic diagram of a network device in the embodiments of the present disclosure, refer to ​As shown, the network device 190 can include a processing component 191, which is further composed of one or more processors, and a memory resource represented by a memory 192 for storing instructions, such as an application, executable by the processing component 191. The application stored in the memory 192 can include one or more than one module each corresponding to a set of instructions. In addition, the processing component 191 is configured to execute the instructions to perform any of the methods described above with respect to the network device.

[0246] The network device 190 can further include a power supply component 193 configured to perform power management of the network device 190, a wired or wireless network interface 194 configured to connect the network device 190 to a network, and an input output (I / O) interface 195. The network device 190 can operate based on an operating system stored in the memory 192, such as Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like.

[0247] Based on the same inventive concept, the embodiments of the present disclosure further provide a communication device, such as a terminal device, which can include a memory, a processor connected with the memory and configured to execute computer executable instructions stored in the memory to implement the OAM-based communication method on the terminal device side in one or more of the embodiments described above.

[0248] Based on the same inventive concept, the embodiments of the present disclosure further provide a communication device, such as a network device, which can include a memory, a processor connected with the memory and configured to execute computer executable instructions stored in the memory to implement the OAM-based communication method on the network device side in one or more of the embodiments described above.

[0249] Based on the same inventive concept, the embodiments of the present disclosure further provide a computer readable storage medium having instructions stored therein; when the instructions are run on a computer, for performing the OAM-based communication method on the terminal device side or the network device side in one or more of the embodiments described above.

[0250] Based on the same inventive concept, the embodiments of the present disclosure further provide a computer program or a computer program product, which, when executed on a computer, causes the computer to implement the OAM-based communication method on the terminal device side or the network device side in one or more of the embodiments described above.

[0251] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims.

[0252] It is to be understood that the application is not limited to the precise construction hereinafter described and as shown in the attached drawings, and that various changes in form and detail can be made therein without departing from the scope thereof. The scope of the application should only be limited by the appended claims.

Claims

1. A communication method based on orbital angular momentum (OAM), characterized in that, include: The terminal device receives the first OAM mode indicated by the network device; After entering the connection state, the terminal device transmits the control channel according to the first OAM mode; The first OAM mode includes at least one of the following OAM modes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1.

2. The method according to claim 1, characterized in that, The first OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode.

3. The method according to claim 1 or 2, characterized in that, When the first OAM mode includes a combination of multiple OAM modes, the terminal device transmits the control channel according to the first OAM mode, including: The terminal device uses a polling method to call the multiple OAM mode combinations to transmit the control channel.

4. The method according to claim 1, characterized in that, The terminal device obtains the first OAM mode indicated by the network device, including: The terminal device receives transmission mode indication information sent by the network device, the transmission mode indication information being used to indicate the first OAM mode; The terminal device determines the first OAM mode based on the transmission mode indication information.

5. The method according to claim 4, characterized in that, The transmission mode indication information includes the arrangement of one or more OAM mode combinations and the number of OAM mode combinations.

6. The method according to claim 1, characterized in that, The method further includes: When the terminal device initially connects to the network device, it obtains a preset second OAM mode. The terminal device transmits the control channel in the second OAM mode during the initial access.

7. The method according to claim 6, characterized in that, The method further includes: If the terminal device does not receive the first OAM mode indicated by the network device, the terminal device transmits the control channel according to the second OAM mode after entering the connected state.

8. The method according to claim 1, characterized in that, The control channel includes a physical uplink control channel and / or a physical downlink control channel.

9. A communication method based on orbital angular momentum (OAM), characterized in that, include: When a terminal device initially connects to a network device, it obtains a preset third OAM mode. The terminal device transmits the control channel in the third OAM mode during the initial access; The third OAM mode is defined as: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

10. The method according to claim 9, characterized in that, The control channel includes a physical uplink control channel and / or a physical downlink control channel.

11. A communication method based on orbital angular momentum (OAM), characterized in that, include: The network device determines the first OAM mode; The network device indicates the first OAM mode to the terminal device, and the first OAM mode is used by the terminal device to transmit control channels; The first OAM mode includes at least one of the following OAM modes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1.

12. The method according to claim 11, characterized in that, The first OAM mode includes one or more OAM mode combinations, and each OAM mode combination includes at least one OAM mode.

13. The method according to claim 11, characterized in that, The network device indicates the first OAM mode to the terminal device, including: The network device sends transmission mode indication information to the terminal device, the transmission mode indication information being used to indicate the first OAM mode.

14. The method according to claim 13, characterized in that, The transmission mode indication information includes the arrangement of one or more OAM mode combinations and the number of OAM mode combinations.

15. The method according to claim 11, characterized in that, After the network device determines the first OAM mode, the method further includes: After determining that the terminal device has entered the connected state, the network device transmits the control channel according to the first OAM mode.

16. The method according to claim 15, characterized in that, The network device determines the first OAM mode, including: After determining that the terminal device has entered the connected state, the network device updates the first OAM mode.

17. The method according to claim 11, characterized in that, Before the network device determines the first OAM mode, the method further includes: When the network device initially connects with the terminal device, it obtains a preset second OAM mode. The network device transmits the control channel in the second OAM mode during the initial access.

18. The method according to claim 17, characterized in that, The control channel includes a physical uplink control channel and / or a physical downlink control channel.

19. A communication method based on orbital angular momentum (OAM), characterized in that, include: When a network device initially connects to a terminal device, it obtains a preset fourth OAM mode. The network device transmits the control channel in the fourth OAM mode during the initial access; The fourth OAM mode is: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1.

20. The method according to claim 19, characterized in that, The control channel includes a physical uplink control channel and / or a physical downlink control channel.

21. A communication device, characterized in that, include: The first processing module is configured to obtain the first orbital angular momentum (OAM) mode indicated by the network device, wherein the first OAM mode includes at least one of the following OAM modes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1. After entering the connection state, the first transmission module transmits the control channel according to the first OAM mode.

22. A communication device, characterized in that, include: The second processing module is used to obtain a preset third orbital angular momentum (OAM) mode when initially accessing the network device, wherein the third OAM mode is: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1. The second transmission module is used to transmit the control channel in accordance with the third OAM mode during the initial access.

23. A communication device, characterized in that, include: The third processing module is used to determine the first orbital angular momentum (OAM) mode, wherein the first OAM mode includes at least one of the following OAM modes: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, and an OAM mode with an eigenvalue of 1. The third transmission module is used to indicate the first OAM mode to the terminal device, and the first OAM mode is used by the terminal device to transmit control channels.

24. A communication device, characterized in that, include: The fourth processing module is used to obtain a preset fourth orbital angular momentum (OAM) mode when initially connecting with the terminal device, wherein the fourth OAM mode is: an OAM mode with an eigenvalue of -1, an OAM mode with an eigenvalue of 0, or an OAM mode with an eigenvalue of 1. The fourth transmission module is used to transmit the control channel in accordance with the fourth OAM mode during the initial access.

25. A communication device, characterized in that, include: Memory; A processor, connected to the memory, is configured to execute computer-executable instructions stored on the memory to implement the communication method as described in any one of claims 1 to 20.

26. A computer storage medium, characterized in that, The computer storage medium stores computer-executable instructions, which, when executed by a processor, enable the communication method as described in any one of claims 1 to 20.

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