Information determination method and device and storage medium

Abstract

The invention relates to an information determination method and device and a storage medium. The method comprises the steps that first information is sent, the first information is used for indicating the intensity degree of a near field effect borne by terminal equipment, the near field effect is the near field effect of the terminal equipment relative to a first antenna array, and the first antenna array is an antenna array for a network device to transmit wireless signals to the terminal equipment. In this way, the intensity degree of the near field effect on the terminal equipment can be determined through the first information.

Description

Information determination method, device and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an information determination method, device, and storage medium. Background Art

[0002] In wireless communication systems, the application of multiple-antenna technology based on Multiple Input Multiple Output (MIMO) and high-frequency spectrum resources can improve communication transmission rates.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide an information determination method, device, and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a method for determining information is provided, the method comprising:

[0006] Send first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device, where the near-field effect is the near-field effect of the terminal device relative to the first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0007] According to a second aspect of an embodiment of the present disclosure, a method for determining information is provided, the method comprising:

[0008] Receive first information, where the first information is used to indicate the strength of a near-field effect experienced by a terminal device, where the near-field effect is the near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0009] According to a third aspect of an embodiment of the present disclosure, a method for determining information is proposed, the method comprising:

[0010] The terminal device sends first information to the network device, and the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to the first antenna array, and the first antenna array is the antenna array used by the network device to transmit wireless signals to the terminal device.

[0011] According to a fourth aspect of an embodiment of the present disclosure, a terminal device is provided, including:

[0012] The transceiver module is configured to send first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to the first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0013] According to a fifth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0014] The transceiver module is configured to receive first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to the first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0015] According to a sixth aspect of an embodiment of the present disclosure, a communication device is proposed, comprising: one or more processors; wherein the terminal device can be used to execute an optional implementation of the first aspect or the second aspect.

[0016] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the method described in the optional implementation of the first aspect or the second aspect.

[0017] According to the eighth aspect of an embodiment of the present disclosure, a communication system is proposed, which may include: a terminal device and a network device; wherein the terminal device is configured to execute the method described in the optional implementation manner of the first aspect, and the network device is configured to execute the method described in the optional implementation manner of the second aspect.

[0018] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects: first information is transmitted, where the first information is used to indicate the strength of a near-field effect experienced by a terminal device. The near-field effect is the proximity effect of the terminal device relative to a first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device. Thus, the strength of the near-field effect experienced by the terminal device can be determined based on the first information.

[0019] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0021] FIG1A is a schematic diagram showing the architecture of a communication system according to an embodiment of the present disclosure.

[0022] FIG1B is a schematic diagram showing the near field and far field of an antenna array according to an embodiment of the present disclosure.

[0023] FIG1C is a schematic diagram showing a terminal device receiving electromagnetic waves in a far-field region according to an embodiment of the present disclosure.

[0024] FIG1D is a schematic diagram showing a terminal device receiving electromagnetic waves in a near-field area according to an embodiment of the present disclosure.

[0025] FIG2 is a flow chart of a method for determining information according to an embodiment of the present disclosure.

[0026] FIG3A is a flow chart illustrating a method for determining information according to an embodiment of the present disclosure.

[0027] FIG3B is a flow chart illustrating an information determination method according to an embodiment of the present disclosure.

[0028] FIG3C is a flow chart illustrating an information determination method according to an embodiment of the present disclosure.

[0029] FIG4A is a schematic flow chart of an information determination method according to an embodiment of the present disclosure.

[0030] FIG4B is a schematic flow chart of an information determination method according to an embodiment of the present disclosure.

[0031] FIG4C is a flow chart illustrating an information determination method according to an embodiment of the present disclosure.

[0032] FIG4D is a flow chart illustrating an information determination method according to an embodiment of the present disclosure.

[0033] FIG5 is a schematic flow chart of an information determination method according to an embodiment of the present disclosure.

[0034] FIG6 is a flow chart showing a method for determining information according to an embodiment of the present disclosure.

[0035] FIG7A is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure.

[0036] FIG7B is a schematic structural diagram of a network device according to an embodiment of the present disclosure.

[0037] FIG8A is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.

[0038] FIG8B is a schematic structural diagram of a chip according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0039] The embodiments of the present disclosure provide an information determination method, device, and storage medium.

[0040] In a first aspect, an embodiment of the present disclosure provides an information determination method, the method comprising:

[0041] Send first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device, where the near-field effect is the near-field effect of the terminal device relative to the first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0042] In the above embodiment, the strength of the near-field effect experienced by the terminal device can be determined through the first information.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0044] Perform channel estimation based on the received reference signal to obtain a first matrix;

[0045] The first information is determined according to the first matrix.

[0046] In the above embodiment, the first information may be determined based on channel estimation, that is, the strength of the near-field effect experienced by the terminal device may be determined based on the channel estimation.

[0047] In combination with some embodiments of the first aspect, in some embodiments, the first antenna array is a one-dimensional uniform array, the first matrix includes at least one first channel matrix, the first channel matrix corresponds to the channel from the antenna port of a polarization direction of an instance of a downlink channel to the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0048] Optionally, the one-dimensional uniform array may be a uniform linear array (ULA) or a cross polarization array (CPA).

[0049] In the above embodiment, for a one-dimensional uniform array, the first information may be determined according to the first channel matrix.

[0050] In conjunction with some embodiments of the first aspect, in some embodiments, the first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N ris the number of antennas in the second antenna array.

[0051] In the above embodiment, for a one-dimensional uniform array, the first channel matrix may be determined based on the specifications of the first antenna array and the second antenna array.

[0052] In combination with some embodiments of the first aspect, in some embodiments, the first antenna array is a two-dimensional uniform array, the first matrix includes at least one second channel matrix and at least one third channel matrix, the second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0053] Optionally, the two-dimensional uniform array may be a uniform planar array (UPA).

[0054] In the above embodiment, for a two-dimensional uniform array, the first information may be determined according to the second channel matrix and the third channel matrix.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments,

[0056] The second channel matrix is The matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, and the N r is the number of antennas in the second antenna array; and / or,

[0057] The third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0058] In the above embodiment, for a two-dimensional uniform array, the first channel matrix may be determined based on the specifications of the first antenna array and the second antenna array.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information according to the first matrix includes:

[0060] determining first dimension information according to the second channel matrix;

[0061] determining second dimension information according to the third channel matrix;

[0062] The first information is determined according to the first dimensional information and the second dimensional information.

[0063] In the above embodiment, the first information may be determined according to information of two dimensions of the UPA.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information based on the first dimensional information and the second dimensional information includes any one of the following:

[0065] using the first dimensional information and the second dimensional information as the first information;

[0066] taking an average of the first dimensional information and the second dimensional information as the first information;

[0067] taking the maximum value of the first dimensional information and the second dimensional information as the first information;

[0068] The minimum value of the first dimensional information and the second dimensional information is used as the first information.

[0069] In the above embodiment, the first information may be determined according to information of two dimensions of the UPA.

[0070] In conjunction with some embodiments of the first aspect, in some embodiments, the example is any one of the following:

[0071] At least one orthogonal frequency division multiplexing (OFDM) subcarrier;

[0072] at least one OFDM symbol;

[0073] At least one resource particle RE;

[0074] At least one channel state information reference signal CSI-RS resource;

[0075] At least one CSI-RS resource set.

[0076] In the above embodiment, the first matrix may be determined based on any one of the above examples.

[0077] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information according to the first matrix includes:

[0078] Determine a second matrix based on the first matrix, where the second matrix is ​​a covariance matrix of the first matrix;

[0079] First information is determined according to the second matrix.

[0080] In the above embodiment, the first information may be determined based on the covariance matrix.

[0081] In conjunction with some embodiments of the first aspect, in some embodiments, determining the second matrix according to the first matrix includes:

[0082] According to the expression Determine a second matrix;

[0083] Where C represents the second matrix, H p (k) represents the first matrix, represents conjugate transposition of the first matrix, p represents the number of the polarization direction of the first antenna array, and k represents the number of the instance of the downlink channel.

[0084] In the above embodiment, the covariance matrix of the downlink channel matrix can be calculated.

[0085] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information according to the second matrix includes:

[0086] Performing eigenvalue decomposition on the second matrix to obtain a third matrix, where the third matrix is ​​a standard orthogonal basis of the signal subspace;

[0087] Obtaining a first eigenvalue and a second eigenvalue according to the third matrix, where the first eigenvalue is the maximum eigenvalue of a fourth matrix, the second eigenvalue is the second largest eigenvalue of the fourth matrix, and the fourth matrix is ​​a matrix calculated according to the third matrix;

[0088] The first information is determined according to the first eigenvalue and the second eigenvalue.

[0089] In the above embodiment, an orthonormal basis of the signal subspace can be obtained by performing eigenvalue decomposition on the covariance matrix, and the first information can be obtained.

[0090] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information according to the first eigenvalue and the second eigenvalue includes:

[0091] The ratio of the modulus of the second eigenvalue to the modulus of the first eigenvalue is used as the first information.

[0092] In the above embodiment, the first information may be determined based on the maximum eigenvalue and the second largest eigenvalue.

[0093] In combination with some embodiments of the first aspect, in some embodiments, the first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0094] In the above embodiment, the strength of the near-field effect can be represented by the wavefront curvature indication information.

[0095] In combination with some embodiments of the first aspect, in some embodiments, the first information is carried by channel state information CSI.

[0096] In the above embodiment, the above first information may be reported via CSI.

[0097] In a second aspect, an embodiment of the present disclosure provides an information determination method, the method comprising:

[0098] Receive first information, where the first information is used to indicate the strength of a near-field effect experienced by a terminal device, where the near-field effect is the near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0099] In the above embodiment, the strength of the near-field effect experienced by the terminal device can be determined through the first information.

[0100] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0101] The strength of the near-field effect of the terminal device is determined based on the first information.

[0102] In the above embodiment, the network device can determine the strength of the near-field effect of the terminal device.

[0103] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0104] Second information is determined based on the first information, where the second information is wireless transmission parameters configured by the network device to the terminal device.

[0105] In the above embodiment, the network device can adapt the terminal device according to the first information, configure wireless transmission parameters for the terminal device, and improve transmission efficiency and reliability.

[0106] In conjunction with some embodiments of the second aspect, in some embodiments, the second information includes at least one of the following:

[0107] A codebook parameter, where the codebook parameter is used to indicate the codebook used by the terminal device;

[0108] Number of candidate beams.

[0109] In the above embodiment, the network device can adapt the terminal device according to the first information, and configure codebook parameters and / or the number of candidate beams for the terminal device, thereby improving transmission efficiency and reliability.

[0110] In combination with some embodiments of the second aspect, in some embodiments, the first information is information determined by the terminal device based on a first matrix, and the first matrix is ​​a matrix obtained by the terminal device through channel estimation based on a received reference signal.

[0111] In combination with some embodiments of the second aspect, in some embodiments, the first antenna array is a one-dimensional uniform array, the first matrix includes at least one first channel matrix, the first channel matrix corresponds to the channel from the antenna port of a polarization direction of an instance of a downlink channel to the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0112] In conjunction with some embodiments of the second aspect, in some embodiments, the first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N r is the number of antennas in the second antenna array.

[0113] In combination with some embodiments of the second aspect, in some embodiments, the first antenna array is a two-dimensional uniform array, the first matrix includes at least one second channel matrix and at least one third channel matrix, the second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0114] In conjunction with some embodiments of the second aspect, in some embodiments,

[0115] The second channel matrix is The matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, and the N r is the number of antennas in the second antenna array; and / or,

[0116] The third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0117] In combination with some embodiments of the second aspect, in some embodiments, the first information is information determined based on the first dimensional information and the second dimensional information, the first dimensional information is information determined based on the second channel matrix, and the second dimensional information is information determined based on the third channel matrix.

[0118] In conjunction with some embodiments of the second aspect, in some embodiments, the first information includes any one of the following:

[0119] the first dimensional information and the second dimensional information;

[0120] an average value of the first dimension information and the second dimension information;

[0121] a maximum value of the first dimension information and the second dimension information;

[0122] The minimum value of the first dimension information and the second dimension information.

[0123] In conjunction with some embodiments of the second aspect, in some embodiments, the example is any one of the following:

[0124] At least one orthogonal frequency division multiplexing (OFDM) subcarrier;

[0125] at least one OFDM symbol;

[0126] At least one resource particle RE;

[0127] At least one channel state information reference signal CSI-RS resource;

[0128] At least one CSI-RS resource set.

[0129] In combination with some embodiments of the second aspect, in some embodiments, the first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0130] In combination with some embodiments of the second aspect, in some embodiments, the first information is carried by channel state information CSI.

[0131] In a third aspect, an embodiment of the present disclosure provides an information determination method, the method comprising:

[0132] The terminal device sends first information to the network device, and the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to the first antenna array, and the first antenna array is the antenna array used by the network device to transmit wireless signals to the terminal device.

[0133] In the above embodiment, the strength of the near-field effect experienced by the terminal device can be determined through the first information.

[0134] In a fourth aspect, an embodiment of the present disclosure proposes a terminal device, which may include at least one of a transceiver module and a processing module; wherein the terminal device can be used to execute the optional implementation method of the first aspect.

[0135] In a fifth aspect, an embodiment of the present disclosure proposes a network device, which may include at least one of a transceiver module and a processing module; wherein the network device can be used to execute the optional implementation method of the second aspect.

[0136] In a sixth aspect, an embodiment of the present disclosure proposes a communication device, which may include: one or more processors; wherein the communication device can be used to execute an optional implementation of the first aspect or the second aspect.

[0137] In a seventh aspect, an embodiment of the present disclosure proposes a storage medium storing instructions, which, when executed on a communication device, enables the communication device to execute the method described in the optional implementation manner of the first aspect or the second aspect.

[0138] In an eighth aspect, an embodiment of the present disclosure proposes a communication system, which may include: a terminal device and a network device; wherein, the terminal device is configured to execute the method described in the optional implementation manner of the first aspect, and the network device is configured to execute the method described in the optional implementation manner of the second aspect.

[0139] In a ninth aspect, an embodiment of the present disclosure proposes a program product, which, when executed by a communication device, enables the communication device to execute the method described in the optional implementation manner of the first aspect or the second aspect.

[0140] In a tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when executed on a computer, enables the computer to execute the method described in the optional implementation of the first aspect or the second aspect.

[0141] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system, wherein the chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first aspect or the second aspect.

[0142] It is understandable that the above-mentioned terminal devices, network devices, communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems can all be used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0143] The present disclosure provides an information determination method, device, and storage medium. In some embodiments, the terms "information determination method" and "information processing method" and "communication method" are interchangeable; "information determination device" and "information processing device" and "communication device" are interchangeable; and "information processing system" and "communication system" are interchangeable.

[0144] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0145] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0146] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0147] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0148] In some embodiments, "plurality" may refer to two or more.

[0149] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0150] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0151] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0152] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0153] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0154] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0155] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0156] In some embodiments, devices and the like can be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as "device," "equipment," "device," "circuit," "network element," "node," "function," "unit," "section," "system," "network," "chip," "chip system," "entity," and "subject" can be used interchangeably.

[0157] In some embodiments, "network" can be interpreted as devices included in the network (eg, network equipment, access network equipment, core network equipment, etc.).

[0158] In some embodiments, the network device may include at least one of an access network device and a core network device.

[0159] In some embodiments, the terms "Access Network Device (AN Device)", "Radio Access Network Device (RAN Device)", "Base Station (BS)", "Radio Base Station (Radio Base Station)", "Fixed Station (Fixed Station)", "Node (Node)", "Access Point (Access Point)", "Transmission Point (TP)", "Reception Point (RP)", "Transmission and / or Reception Point (TRP))", "Panel (Panel)", "Antenna Panel (Antenna Panel)", "Antenna Array (Antenna Array)" "Cell (Cell)", "Macro Cell (Macro Cell)", "Small Cell (Small Cell)", "Femto Cell (Femto Cell)", "Pico Cell (Pico Cell)" "Sector (Sector)", "Cell Group (Cell Group)", "Serving Cell", "Carrier (Carrier)", "Component Carrier (Component Carrier)", "Bandwidth Part (BWP)" and the like can be used interchangeably.

[0160] In some embodiments, the terms "terminal", "terminal device", "terminal side device", "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station (Subscriber Station), mobile unit (Mobile Unit), subscriber unit (Subscriber Unit), wireless unit (Wireless Unit), remote unit (Remote Unit), mobile device (Mobile Device), wireless device (Wireless Device), wireless communication device (Wireless Communication Device), remote device (Remote Device), mobile subscriber station (Mobile Subscriber Station), access terminal (Access Terminal), mobile terminal (Mobile Terminal), wireless terminal (Wireless Terminal), remote terminal (Remote Terminal), handset (Handset), user agent (User Agent), mobile client (Mobile Client), client (Client) and the like can be used interchangeably.

[0161] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal device. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal device is replaced by the communication between multiple terminal devices (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it is also possible to set the structure in which the terminal device has all or part of the functions of the access network device. In addition, terms such as "uplink" and "downlink" can also be replaced by terms corresponding to communication between terminal devices (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels or direct channels, and uplinks, downlinks, etc. can be replaced by side links or direct links.

[0162] In some embodiments, the terminal device may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal device.

[0163] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0164] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0165] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0166] FIG1A is a schematic diagram illustrating an architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1A , the communication system 100 may include a terminal device 101 and a network device 102 .

[0167] In some embodiments, the terminal device 101 may include at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, and a wireless terminal device in smart home, but is not limited thereto.

[0168] In some embodiments, the network device 102 may include at least one of an access network device and a core network device.

[0169] In some embodiments, the access network device may be a node or device that accesses the terminal device to the wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a Wi-Fi system, but is not limited thereto.

[0170] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0171] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit (Control Unit). The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0172] In some embodiments, the core network device may be a single device, or may be multiple devices or a group of devices. The core network may include at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0173] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0174] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1A , or a portion thereof, but are not limited thereto. The entities shown in FIG1A are examples. The communication system may include all or part of the entities shown in FIG1A , or may include other entities outside of FIG1A . The number and form of the entities are arbitrary. The entities may be physical or virtual. The connection relationship between the entities is an example. The entities may be connected or disconnected. The connection may be in any manner, whether direct or indirect, and may be wired or wireless.

[0175] The embodiments of the present disclosure may be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G New Radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New Radio Access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.17 (WiMAX (registered trademark)), IEEE 802.18 (WiMAX (registered trademark)), IEEE 802.19 (WiMAX (registered trademark)), IEEE 802.20 (WiMAX (registered trademark)), IEEE 802.21 (WiMAX (registered trademark)), IEEE 802.22 (WiMAX (registered trademark)), IEEE 802.23 (WiMAX (registered trademark)), IEEE 802.24 (WiMAX (registered trademark)), IEEE 802.25 (WiMAX (registered trademark)), IEEE 802.26 (WiMAX (registered trademark)), IEEE 802.27 (WiMAX (registered trademark)), IEEE 802.28 (WiMAX (registered trademark)), IEEE 802.29 (WiMAX (registered trademark)), IEEE 802.30 (WiMAX (registered trademark)), IEEE 802.31 (WiMAX (registered trademark)), IEEE 802.32 (WiMAX (registered trademark)), IEEE 802.33 (WiMAX (registered trademark)), 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0176] In some embodiments, the network device 102 in the communication system 100 may include a first antenna array, and the terminal device may include a second antenna array. The network device may send downlink signals to the terminal device via the first antenna array, and may also receive uplink signals sent by the terminal device via the first antenna array. Similarly, the terminal device may send uplink signals to the network device via the second antenna array, and may also receive downlink signals sent by the network device via the second antenna array. Optionally, the first antenna array may be an antenna array that supports MIMO technology, such as a large-scale antenna array or a very large-scale antenna array.

[0177] In wireless communication systems, in order to increase the transmission rate, multiple-antenna technology based on Multiple Input Multiple Output (MIMO) and technology using high-frequency spectrum resources for high-frequency transmission have been increasingly used.

[0178] In some embodiments of the present disclosure, to meet the demand for ever-increasing data rates, communication systems may utilize high-frequency spectrum resources for uplink and downlink transmission, such as millimeter wave and terahertz bands. High-frequency transmission is subject to greater transmission attenuation, especially due to severe absorption by water molecules and oxygen in the air, resulting in very limited transmission distance and coverage. On the one hand, higher frequencies mean shorter wavelengths. Compared to medium and low-frequency spectrum, more antennas, such as large-scale or ultra-large-scale antennas, can be deployed within the same aperture size. On the other hand, large-scale antennas can achieve greater beamforming gain, effectively compensating for severe transmission losses, thereby extending coverage and transmission distance. Therefore, high-frequency transmission and large-scale antenna technology are a pair of complementary technologies. The combination of the two will be one of the most promising technologies in the next generation of wireless communication technology.

[0179] Multi-antenna technology, also known as MIMO technology, is very sensitive to CSI, especially spatial domain CSI. If the spatial domain CSI is inaccurate, the performance of the MIMO link will be greatly reduced. Optionally, in a frequency division duplex (FDD) system, in order for network equipment (such as access network equipment) to obtain accurate spatial domain CSI, the terminal equipment needs to feed back the spatial domain CSI obtained by measuring the Channel State Information Reference Signal (CSI-RS) to the network equipment. In order to accurately represent the spatial domain CSI, a codebook can be used to quantize the spatial domain CSI.

[0180] It should be noted that high-frequency massive MIMO will lead to the hardening of wireless channels, which are mainly based on line-of-sight (LoS) propagation.

[0181] Figure 1B is a schematic diagram of the near field and far field of an antenna array according to an embodiment of the present disclosure. As shown in Figure 1B, for a first antenna array 11 (whose antenna aperture is denoted as D), its electromagnetic (EM) field can be divided into a near field region (Near field) 12 and a far field region (Far field) 13. The first antenna array is located at point A, and the boundary between the near field region 12 and the far field region 13 is point B. The distance between points A and B can be called the Rayleigh distance.

[0182] The expression of the Rayleigh distance satisfies the following relationship:

[0183] R=(2*D 2 ) / λ;

[0184] Wherein, R represents the Rayleigh distance (that is, the distance between point A and point B), D represents the effective aperture of the first antenna array, and λ represents the wavelength of the electromagnetic wave transmitted by the first antenna array.

[0185] Based on the above expression, it can be known that the range of the near field can be determined according to the effective aperture and wavelength of the array. In existing cellular wireless communication systems, terminal devices are mostly located in the far field of the first antenna array of the network device. If the carrier frequency becomes higher and higher (that is, the wavelength of the electromagnetic wave becomes smaller and smaller), and / or the effective aperture of the antenna array becomes larger and larger, the range of the near field area will expand. Even if the existing network topology (such as the distance and position between access network devices, the location distribution of terminal devices, etc.) remains unchanged, the terminal device in the far field area at low frequency may also be in the near field area at high frequency, that is, the far-field UE at low frequency is likely to become a near-field UE at high frequency.

[0186] In some embodiments, the electromagnetic waves received by the terminal device in the near-field region and the far-field region are different.

[0187] Figure 1C is a schematic diagram of a terminal device receiving electromagnetic waves in a far-field area according to an embodiment of the present disclosure. As shown in Figure 1C, the first antenna array may include at least one antenna port, such as multiple antenna ports A1, A2, ..., An in Figure 1C, and the terminal device 101 is in the far-field area of ​​the first antenna array. The beam received by the terminal device 101 may be a two-dimensional (2 dimension, 2D) directional beam. For example, in the far-field area, the electromagnetic wave received by the terminal device 101 (that is, the electromagnetic wave sent by the first antenna array) may be a plane wave, and the beam for the terminal device is a two-dimensional (2 dimension, 2D) directional beam pointing to the terminal device. For any path in multipath propagation, the time and phase of the receiving antenna array (such as the second antenna array) arriving at the terminal device are equally spaced.

[0188] Figure 1D is a schematic diagram of a terminal device receiving electromagnetic waves in a near-field area according to an embodiment of the present disclosure. As shown in Figure 1D, the first antenna array may also include at least one antenna port, such as multiple antenna ports A1, A2, ..., An in Figure 1D. The terminal device 101 is in the near-field area of ​​the first antenna array, and the beam received by the terminal device 101 may be a three-dimensional (3D) beam. For example, in the near-field area, the electromagnetic wave received by the terminal device 101 (that is, the electromagnetic wave sent by the first antenna array) may be a spherical wave, and the beam for the terminal device is a three-dimensional beam directed to the terminal device. For any path in multipath propagation, the time and phase of the receiving antenna array (such as the second antenna array) arriving at the terminal device will no longer be equally spaced.

[0189] The aforementioned differences in electromagnetic waves received by terminal devices in the near-field and far-field regions can degrade performance when used in the near-field region. To improve communication performance, different communication parameters can be used for the near-field and far-field regions. These communication parameters can include at least one of the following: codebook type, number of beams, and so on. For example, a separate codebook type or a larger number of candidate beams can be configured for the near-field region.

[0190] However, in related technologies, network equipment cannot determine whether the area where the terminal device is located is a near-field area or a remote area, and is even less able to determine the strength of the near-field effect of the terminal device.

[0191] FIG2 is a flow chart of a method for determining information according to an embodiment of the present disclosure. The method may be executed by the above-mentioned communication system. As shown in FIG2 , the method may include:

[0192] Step S2101: The terminal device obtains a first matrix.

[0193] In some embodiments, the terminal device may perform channel estimation based on the received reference signal to obtain a first matrix.

[0194] Optionally, the reference signal may include a channel state information reference signal CSI-RS or at least one of other signals sent by the network device to the terminal device.

[0195] In some embodiments, the above-mentioned first antenna array is a one-dimensional uniform array, and the above-mentioned first matrix includes at least one first channel matrix, which corresponds to the channel from the antenna port of a polarization direction of an instance of a downlink channel to the second antenna array, and the polarization direction is the polarization direction of the first antenna array. The first antenna array is an antenna array for the network device to transmit wireless signals, and the second antenna array is an antenna array for the terminal device to receive wireless signals.

[0196] Optionally, the one-dimensional uniform array may be a uniform linear array (ULA) or a cross polarization array (CPA).

[0197] For example, the expression of the first channel matrix can be H p (k), the first channel matrix H p (k) may correspond to the channel in the p-th polarization direction of the k-th instance of the downlink channel (the channel from the network device to the terminal device). This channel may be the channel from the antenna port of the first antenna array to the second antenna array.

[0198] Optionally, the first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, N r is the number of antennas in the second antenna array, which is the antenna array used by the terminal device to receive wireless signals.

[0199] In one implementation, the above example may be any of the following:

[0200] At least one Orthogonal Frequency Division Multiplexing (OFDM) subcarrier;

[0201] at least one OFDM symbol;

[0202] At least one resource element RE (Resource Element);

[0203] At least one channel state information reference signal (CSI-RS) resource;

[0204] At least one CSI-RS resource set.

[0205] In this way, the first matrix can be obtained based on any of the above examples.

[0206] In some embodiments, the first antenna array is a two-dimensional uniform array. The first matrix may include at least one second channel matrix and at least one third channel matrix. The second channel matrix corresponds to a channel from a column of antenna ports in a polarization direction of an instance of a downlink channel to the second antenna array, and the third channel matrix corresponds to a channel from a row of antenna ports in a polarization direction of an instance of a downlink channel to the second antenna array, where the polarization direction is the polarization direction of the first antenna array. Similarly, the first antenna array is an antenna array for transmitting wireless signals by a network device, and the second antenna array is an antenna array for receiving wireless signals by a terminal device.

[0207] Optionally, the two-dimensional uniform array may be a uniform planar array (UPA).

[0208] For example, the expression of the second channel matrix can be The second channel matrix The channel from the c-th column antenna port to the second antenna array in the p-th polarization direction (eg, vertical polarization direction) of the k-th instance of the downlink channel, where v indicates the vertical direction.

[0209] For another example, the expression of the third channel matrix can be The third channel matrix The channel from the rth row antenna port to the second antenna array in the pth polarization direction (eg, horizontal polarization direction) of the kth instance of the downlink channel, where h indicates the horizontal direction.

[0210] Optionally, the second channel matrix is The matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, N r is the number of antennas in the second antenna array, where r indicates receiving and t indicates transmitting.

[0211] Also optionally, the third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0212] Likewise, the above instance could be any of the following:

[0213] At least one orthogonal frequency division multiplexing (OFDM) subcarrier;

[0214] at least one OFDM symbol;

[0215] At least one resource particle RE;

[0216] At least one channel state information reference signal CSI-RS resource;

[0217] At least one CSI-RS resource set.

[0218] In this way, for UPA, a first matrix can be obtained.

[0219] Step S2102: The terminal device determines first information according to the first matrix.

[0220] In some embodiments, the first information can be used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect can be the near-field effect of the terminal device relative to the first antenna array, which is an antenna array used by the network device to transmit wireless signals to the terminal device.

[0221] In some embodiments, the first information can be used to indicate whether the terminal device is in a near-field area, where the near-field area is an area determined based on the antenna parameters of the above-mentioned first antenna array.

[0222] In some embodiments, the first information can be used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, where the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0223] In some embodiments, the first information may include wavefront curvature indication information, which can be used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0224] In some embodiments, the name of the first information is not limited, for example, it can be "wavefront curvature indicator WFCI (wavefront curvature indicator)", "wavefront curvature indication information", "near field effect indication information", "near field indication information", etc.

[0225] It should be noted that the curvature of the electromagnetic wave front can also be called the degree of curvature, which can be expressed by curvature or curvature radius.

[0226] In some embodiments, the terminal device may determine the first information in the following manner:

[0227] Step S21: The terminal device determines a second matrix based on the first matrix.

[0228] In some embodiments, the second matrix may be a covariance matrix of the first matrix.

[0229] In one implementation, the first antenna array is a one-dimensional uniform array (eg, ULA or CPA), and the first matrix may include at least one first channel matrix H p (k).

[0230] Optionally, you can use the expression The second matrix is ​​determined.

[0231] Among them, C represents the second matrix, H p (k) represents the first channel matrix, represents the conjugate transpose of the first channel matrix, p represents the number of the polarization direction of the first antenna array, and k represents the number of the downlink channel instance. For example, the first channel matrix H p (k) may correspond to the channel in the p-th polarization direction of the k-th instance of the downlink channel (the channel from the network device to the terminal device).

[0232] Optionally, if the first antenna array is a single-polarized antenna array, the value of p can be 1; if the first antenna array is a dual-polarized antenna array, the value of p can be 1 or 2. The value of k can be determined according to the number of instances included in the downlink channel (the channel from the network device to the terminal device). For example, if the downlink channel includes N instances, the value of k can be 1 to N.

[0233] In another implementation, the first antenna array is a two-dimensional uniform array (eg, UPA), and the first matrix may include at least one second channel matrix and at least one third channel matrix

[0234] Alternatively, the two second matrices C can be determined according to the following expressions: (v) and C (h) :

[0235] Among them, C (v) represents the second matrix in the vertical dimension, represents the second channel matrix, the second channel matrix The channel from the c-th column antenna port in the p-th polarization direction (e.g., vertical polarization direction) of the k-th instance of the downlink channel to the second antenna array, represents the conjugate transpose of the second channel matrix, C(h) represents the second matrix in the horizontal dimension, represents the third channel matrix, the third channel matrix The channel from the rth antenna port in the pth polarization direction (e.g., horizontal polarization direction) of the kth instance of the downlink channel to the second antenna array, represents the conjugate transpose of the third channel matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0236] Step S22: The terminal device determines the first information according to the second matrix.

[0237] In some embodiments, the manner in which the terminal device determines the first information according to the second matrix may include at least one of the following steps S221 to S223:

[0238] Step S221: The terminal device performs eigenvalue decomposition (EVD) on the second matrix to obtain a third matrix.

[0239] The third matrix is ​​a standard orthogonal basis of the signal subspace.

[0240] In some embodiments, the first antenna array is a one-dimensional uniform array, which can be expressed as Determine the third matrix U s .

[0241] Among them, C represents the second matrix, U s is the third matrix, U n Represents the standard orthogonal basis of the noise subspace, the diagonal matrix Λ s The elements on the main diagonal are the eigenvalues ​​corresponding to the orthogonal basis vectors of the signal subspace, and the diagonal matrix Λ n The elements on the main diagonal of are the eigenvalues ​​corresponding to the orthogonal basis vectors of the noise subspace. For U s The conjugate transpose of For U n The conjugate transpose of . The diagonal matrix Λ s and Λ n All elements outside the main diagonal are 0.

[0242] In some other embodiments, the first antenna array is a two-dimensional uniform array, which can be based on two second matrices C (v) and C (h) , according to the following expressions, determine the two third matrices and

[0243] Among them, C (v) A second matrix representing a first dimension (e.g., vertical direction), is the third matrix of the first dimension (e.g. vertical direction), Representing the standard orthogonal basis of the noise subspace in the first dimension (e.g., vertical direction), the diagonal matrix The elements on the main diagonal of are the eigenvalues ​​corresponding to the orthogonal basis vectors of the signal subspace of the first dimension (for example, the vertical direction), and the diagonal matrix The elements on the main diagonal of are the eigenvalues ​​corresponding to the orthogonal basis vectors of the noise subspace in the first dimension (e.g., vertical direction). for The conjugate transpose of for The conjugate transpose of C (h) A second matrix representing the second dimension (e.g. horizontal direction), is the third matrix of the second dimension (e.g. horizontal direction), Representing the standard orthogonal basis of the noise subspace in the second dimension (e.g. horizontal direction), the diagonal matrix The elements on the main diagonal of are the eigenvalues ​​corresponding to the orthogonal basis vectors of the signal subspace in the second dimension (for example, the horizontal direction), and the diagonal matrix The elements on the main diagonal of are the eigenvalues ​​corresponding to the orthogonal basis vectors of the noise subspace in the second dimension (e.g. horizontal direction). for The conjugate transpose of for The conjugate transpose of .

[0244] Step S222: The terminal device obtains the first eigenvalue and the second eigenvalue according to the third matrix.

[0245] The first eigenvalue is the maximum eigenvalue of the fourth matrix, the second eigenvalue is the second largest eigenvalue of the fourth matrix, and the fourth matrix is ​​a matrix calculated according to the third matrix.

[0246] In some embodiments, a fourth matrix may be calculated based on the third matrix, and the maximum eigenvalue of the fourth matrix is ​​used as the first eigenvalue, and the second largest eigenvalue of the fourth matrix is ​​used as the second eigenvalue.

[0247] In one implementation, the first antenna array is a one-dimensional uniform array, which can be expressed as The fourth matrix is ​​obtained by calculation;

[0248] Among them, Us,1 Represents the third matrix U s The first N t -1 line, U s,2 Represents the third matrix U s N after t -1 line, N t is the number of antenna ports of the first antenna array in one polarization direction, that is, the first channel matrix H p (k) The number of columns.

[0249] In another implementation, the first antenna array is a two-dimensional uniform array, which can be based on the expression and Two fourth matrices are calculated respectively;

[0250] in, Represents the third matrix Before OK, Represents the third matrix After OK, is the number of antenna ports in one polarization direction of the first dimension (e.g., vertical direction) of the first antenna array, that is, the second channel matrix The number of columns; Represents the third matrix Before OK, Represents the third matrix After OK, is the number of antenna ports in one polarization direction of the second dimension (e.g., horizontal direction) of the first antenna array, that is, the third channel matrix The number of columns.

[0251] Step S223: The terminal device determines the first information based on the first characteristic value and the second characteristic value.

[0252] In some embodiments, a ratio of a modulus of the second eigenvalue to a modulus of the first eigenvalue is used as the first information.

[0253] For example, one can base the expression The first information is obtained by calculation.

[0254] Wherein, w represents the first information, λ1 represents the first eigenvalue, λ2 represents the second eigenvalue, |λ1| represents the modulus of the first eigenvalue, |λ2| represents the modulus of the second eigenvalue. Optionally, λ1 and λ2 may be imaginary numbers.

[0255] In some embodiments, λ1 and λ2 can be the above expressions respectively The largest and second largest eigenvalues ​​of .

[0256] Optionally, a modulus value of the ratio of the second eigenvalue to the first eigenvalue may be used as the first information.

[0257] For example, one can base the expression The first information is obtained by calculation.

[0258] In some embodiments, the first antenna array is a one-dimensional uniform array (eg, a ULA), and the first matrix may include at least one first channel matrix.

[0259] In some embodiments, the first antenna array is a two-dimensional uniform array (e.g., UPA), and the above-mentioned first matrix may include at least one second channel matrix and at least one third channel matrix. The terminal device can determine the first dimension information based on the second channel matrix, determine the second dimension information based on the third channel matrix, and determine the first information based on the first dimension information and the second dimension information.

[0260] For example, the terminal device may, based on the above step S21, determine the second channel matrix Determine the second matrix C in the vertical dimension (v) , according to the third channel matrix Determine the second matrix C in the horizontal dimension (h) Based on the above steps S221 to S223, the second matrix C in the vertical dimension can be (v) The first dimension information w1 can be determined based on the second matrix C on the horizontal dimension (h) The second dimension information w2 is determined, and the first information is further determined based on the first dimension information and the second dimension information.

[0261] In one implementation, the terminal device may use the first dimension information and the second dimension information as the first information;

[0262] In another implementation, the terminal device may use the average of the first dimension information and the second dimension information as the first information;

[0263] In another implementation, the terminal device may use the maximum value of the first dimension information and the second dimension information as the first information;

[0264] In yet another implementation, the terminal device may use the minimum value of the first dimension information and the second dimension information as the first information.

[0265] In some embodiments, the first information is information determined based on first dimensional information and second dimensional information, the first dimensional information is information determined based on the second channel matrix, and the second dimensional information is information determined based on the third channel matrix.

[0266] In some embodiments, the first information includes any one of the following:

[0267] First dimension information and second dimension information;

[0268] The average value of the first dimension information and the second dimension information;

[0269] The maximum value of the first dimension information and the second dimension information;

[0270] The minimum value of the first dimension information and the second dimension information.

[0271] Step S2103: The terminal device sends first information to the network device.

[0272] In some embodiments, the network device may receive the first information. For example, the network device may receive the first information sent by the terminal device. For another example, the network device may also receive the first information sent by another entity.

[0273] In some embodiments, the first information may be carried by channel state information CSI. For example, the first information may be part of the CSI.

[0274] In some embodiments, the terminal device may report the first information via an uplink channel. The uplink channel may include at least one of a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), or other uplink channels. Similarly, the network device may receive the first information via the uplink channel.

[0275] In some embodiments, the terminal device may send a first message, which may include the first information. For example, the terminal device may send the first message to the network device. Optionally, the network device may receive the first message.

[0276] Optionally, the first message may include at least one of a radio resource control RRC (Radio Resource Control) message, a medium access control control element MAC CE (Medium Access Control Control Element), uplink control information UCI (Uplink Control Information) or other messages sent by the terminal device to the network device.

[0277] Step S2104: The network device determines the strength of the near-field effect of the terminal device based on the first information.

[0278] In some embodiments, the strength of the near-field effect can indicate whether the terminal device is in the near-field area of ​​the network device's transmitting antenna array. The near-field area is an area determined based on antenna parameters of the first antenna array.

[0279] In some embodiments, the network device may determine whether the terminal device is in a near-field area based on the first information.

[0280] In some embodiments, the first information (e.g., WFCI) can quantitatively indicate the strength of the near-field effect. For example, a smaller WFCI (e.g., close to 0) of a terminal device can be used to indicate that the terminal device is in the far-field region; a larger WFCI of a terminal device indicates a stronger near-field effect of the terminal device. Similarly, the network device can determine the strength of the near-field effect of the terminal device based on the first information.

[0281] Optionally, the terminal device may be determined to be in the near-field region when the WFCI is greater than or equal to a first threshold. The first threshold may be any positive real number, such as 0.5. Similarly, the terminal device may be determined to be in the far-field region when the WFCI is less than the first threshold.

[0282] Alternatively, when the WFCI is greater than a first threshold, it may be determined that the terminal device is in a near-field area; and when the WFCI is less than or equal to the first threshold, it may be determined that the terminal device is in a far-field area.

[0283] Step S2105: The network device determines the second information based on the first information.

[0284] In some embodiments, the second information may include wireless transmission parameters configured by the network device to the terminal device.

[0285] In some embodiments, the second information includes at least one of the following:

[0286] Codebook parameter, which is used to indicate the codebook used by the terminal device;

[0287] Number of candidate beams.

[0288] For example, if the terminal device is in the near field area (equivalent to the near field effect of the terminal device being strong, or the WFCI being greater than or equal to the first threshold), the network device may select and configure the first codebook for the near field area; or, if the terminal device is in the near field area (equivalent to the near field effect of the terminal device being weak, or the WFCI being less than the first threshold), the network device may select and configure the second codebook for the far field area.

[0289] For another example, for beam management, if the terminal device is in the near-field area, a larger number of candidate beams can be configured.

[0290] Optionally, corresponding adaptation can be performed according to the size of the WFCI (that is, the strength of the near-field effect). For example, the larger the WFCI, the more candidate beams are configured.

[0291] Using the above method, the network device can determine the strength of the near-field effect of the terminal device based on the first information, and adapt the terminal device according to the strength of the near-field effect of the terminal device, for example, selecting and configuring a suitable codebook, configuring a suitable number of candidate beams, etc.

[0292] The method according to the embodiments of the present disclosure may include at least one of the above steps S2101 to S2105. For example, step S2103 may be implemented as an independent embodiment, steps S2103 + S2104 may be implemented as an independent embodiment, steps S2103 + S2105 may be implemented as an independent embodiment, steps S2101 + S2102 may be implemented as an independent embodiment, steps S2101 + S2102 + S2103 may be implemented as an independent embodiment, and steps S2103 + S2104 + S2105 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0293] In some embodiments, the above steps S2101 to S2105 can be executed in a swapped order or simultaneously. For example, steps S2104 and S2105 can be executed in a swapped order or simultaneously.

[0294] In some embodiments, steps S2101 to S2105 are all optional. For example, steps S2101, S2102, S2104, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments. For another example, steps S2103, S2104, and S2105 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0295] In some embodiments, reference may be made to other optional implementations described before or after the description corresponding to FIG. 2 .

[0296] Using the above method, first information is sent. This first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the proximity effect of the terminal device relative to a first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device. Thus, the strength of the near-field effect experienced by the terminal device can be determined using the first information.

[0297] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0298] In some embodiments, the terms "codebook," "codeword," and "precoding matrix" may be used interchangeably. For example, a codebook may be a collection of one or more codewords / precoding matrices.

[0299] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0300] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0301] In some embodiments, terms such as "Physical Downlink Shared Channel (PDSCH)", "DL data", "DL signal", "DL message", "downlink data", "downlink signal", "downlink message" can be replaced with each other, and terms such as "Physical Uplink Shared Channel (PUSCH)", "UL data", "UL signal", "UL message", "uplink data", "uplink signal", "uplink message" can be replaced with each other.

[0302] In some embodiments, terms such as "resource block (RB)", "physical resource block (PRB)", "sub-carrier group (SCG)", "resource element group (REG)", "PRB pair", "RB pair", "resource element (RE)", and "sub-carrier" can be used interchangeably.

[0303] In some embodiments, the terms "precoding", "precoder", "weight", "precoding weight", "quasi-co-location (QCL)", "transmission configuration indication (TCI) state", "spatial relation", "spatial domain filter", "transmission power", "phase rotation", "antenna port", "antenna port group", "layer", "the number of layers", "rank", "resource", "resource set", "resource group", "beam", "beam width", "beam angular degree", "antenna", "antenna element", "panel" and the like can be used interchangeably.

[0304] In some embodiments, terms such as "frame", "radio frame", "subframe", "slot", "sub-slot", "mini-slot", "symbol", "symbol", and "transmission time interval (TTI)" can be used interchangeably.

[0305] In some embodiments, "obtain", "get", "get", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining by self-processing, autonomous implementation, etc.

[0306] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0307] FIG3A is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG3A , the embodiment of the present disclosure relates to a method for determining information, which can be executed by a terminal device. The method may include:

[0308] Step S3101: Obtain a first matrix.

[0309] The optional implementation of step S3101 can refer to the optional implementation of step S2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0310] Step S3102: Determine first information according to the first matrix.

[0311] The optional implementation of step S3102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0312] Step S3103: Send the first information.

[0313] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0314] In some embodiments, the terminal device may send the first information to the network device, but is not limited thereto. The terminal device may also send the first information to other entities.

[0315] Optionally, the first information can be used by the network device to determine whether the terminal device is in the near field area based on the first information. Its optional implementation method can be referred to the optional implementation method of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0316] Optionally, the first information can be used by the network device to determine the second information based on the first information. For optional implementations, see the optional implementations of step S2105 in FIG2 and other related parts of the embodiment involved in FIG2 , which will not be described in detail here.

[0317] The method involved in the embodiment of the present disclosure may include at least one of the above steps S3101 to S3103. For example, step S3103 may be implemented as an independent embodiment, and steps S3101+S3102 may be implemented as independent embodiments, but are not limited thereto.

[0318] In some embodiments, the above steps S3101 to S3103 can be executed in a swapped order or simultaneously.

[0319] In some embodiments, steps S3101 to S3103 are all optional steps. For example, steps S3101 and S3102 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0320] FIG3B is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG3B , the embodiment of the present disclosure relates to a method for determining information, which can be executed by a terminal device. The method may include:

[0321] Step S3201: Obtain a first matrix.

[0322] The optional implementation of step S3201 can be found in step S2101 of FIG. 2 , the optional implementation of step S3101 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0323] Step S3202: Determine first information according to the first matrix.

[0324] The optional implementation of step S3202 can be found in step S2102 of FIG. 2 , the optional implementation of step S3102 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0325] In some embodiments, the above steps are all optional steps.

[0326] FIG3C is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG3C , the embodiment of the present disclosure relates to a method for determining information, which can be executed by a terminal device. The method may include:

[0327] Step S3301: Send the first information.

[0328] The optional implementation of step S3301 can be found in step S2103 of FIG. 2 , the optional implementation of step S3103 of FIG. 3A , and other related parts in the embodiments involved in FIG. 2 and FIG. 3A , which will not be described in detail here.

[0329] In some embodiments, the first information is used to indicate the strength of the near-field effect experienced by the terminal device, where the near-field effect is the near-field effect of the terminal device relative to a first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0330] In some embodiments, the method further comprises:

[0331] Perform channel estimation based on the received reference signal to obtain a first matrix;

[0332] The first information is determined according to the first matrix.

[0333] In some embodiments, the first antenna array is a one-dimensional uniform array, the first matrix includes at least one first channel matrix, the first channel matrix corresponds to a channel from an antenna port in a polarization direction of an instance of a downlink channel to the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is an antenna array for the terminal device to receive wireless signals.

[0334] In some embodiments, the first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N r is the number of antennas in the second antenna array.

[0335] In some embodiments, the first antenna array is a two-dimensional uniform array, the first matrix includes at least one second channel matrix and at least one third channel matrix, the second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0336] In some embodiments, the second channel matrix is The matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, and the N r is the number of antennas in the second antenna array; and / or, the third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0337] In some embodiments, determining the first information according to the first matrix includes:

[0338] determining first dimension information according to the second channel matrix;

[0339] determining second dimension information according to the third channel matrix;

[0340] The first information is determined according to the first dimensional information and the second dimensional information.

[0341] In some embodiments, determining the first information according to the first dimensional information and the second dimensional information includes any one of the following:

[0342] using the first dimensional information and the second dimensional information as the first information;

[0343] taking an average of the first dimensional information and the second dimensional information as the first information;

[0344] taking the maximum value of the first dimensional information and the second dimensional information as the first information;

[0345] The minimum value of the first dimensional information and the second dimensional information is used as the first information.

[0346] In some embodiments, the example is any one of the following:

[0347] At least one orthogonal frequency division multiplexing (OFDM) subcarrier;

[0348] at least one OFDM symbol;

[0349] At least one resource particle RE;

[0350] At least one channel state information reference signal CSI-RS resource;

[0351] At least one CSI-RS resource set.

[0352] In some embodiments, determining the first information according to the first matrix includes:

[0353] Determine a second matrix based on the first matrix, where the second matrix is ​​a covariance matrix of the first matrix;

[0354] First information is determined according to the second matrix.

[0355] In some embodiments, determining the second matrix according to the first matrix includes:

[0356] According to the expression Determine a second matrix;

[0357] Where C represents the second matrix, H p (k) represents the first matrix, represents conjugate transposition of the first matrix, p represents the number of the polarization direction of the first antenna array, and k represents the number of the instance of the downlink channel.

[0358] In some embodiments, determining the first information according to the second matrix includes:

[0359] Performing eigenvalue decomposition on the second matrix to obtain a third matrix, where the third matrix is ​​a standard orthogonal basis of the signal subspace;

[0360] Obtaining a first eigenvalue and a second eigenvalue according to the third matrix, where the first eigenvalue is the maximum eigenvalue of a fourth matrix, the second eigenvalue is the second largest eigenvalue of the fourth matrix, and the fourth matrix is ​​a matrix calculated according to the third matrix;

[0361] The first information is determined according to the first eigenvalue and the second eigenvalue.

[0362] In some embodiments, determining the first information according to the first eigenvalue and the second eigenvalue includes:

[0363] The ratio of the modulus of the second eigenvalue to the modulus of the first eigenvalue is used as the first information.

[0364] In some embodiments, the first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0365] In some embodiments, the first information is carried by channel state information CSI.

[0366] FIG4A is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG4A , the embodiment of the present disclosure relates to a method for determining information, which can be executed by a network device. The method includes:

[0367] Step S4101: Obtain first information.

[0368] The optional implementation of step S4101 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0369] In some embodiments, the network device may receive the first information sent by the terminal device, but is not limited thereto. The network device may also receive the first information sent by other entities.

[0370] In some embodiments, the network device may obtain first information specified by the protocol.

[0371] In some embodiments, the network device may obtain the first information from an upper layer(s).

[0372] In some embodiments, the network device may perform processing to obtain the first information.

[0373] In some embodiments, step S4101 may be omitted, and the network device may autonomously implement the function indicated by the first information, or the above function may be default or by default.

[0374] Step S4102: Determine the strength of the near-field effect of the terminal device based on the first information.

[0375] The optional implementation of step S4103 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0376] Step S4103: Determine the second information based on the first information.

[0377] The optional implementation of step S4103 can refer to the optional implementation of step S2105 in FIG2 and other related parts in the embodiment involved in FIG2 , which will not be described in detail here.

[0378] The method involved in the embodiments of the present disclosure may include at least one of the above steps S4101 to S4103. For example, step S4101 can be implemented as an independent embodiment, steps S4101+S4102 can be implemented as independent embodiments, and steps S4101+S4103 can be implemented as independent embodiments, but are not limited thereto.

[0379] In some embodiments, the above steps S4101 to S4103 can be executed in a swapped order or simultaneously. For example, steps S4102 and S4103 can be executed in a swapped order or simultaneously.

[0380] In some embodiments, steps S4101 to S4103 are all optional steps. For example, steps S4102 and S4103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0381] FIG4B is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG4B , an embodiment of the present disclosure relates to a method for determining information, which can be performed by a network device. The method may include:

[0382] Step S4201: Obtain first information.

[0383] The optional implementation of step S4201 can be found in step S2103 of FIG. 2 , the optional implementation of step S4101 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0384] Step S4202: Determine the strength of the near-field effect of the terminal device based on the first information.

[0385] The optional implementation of step S4202 can be found in step S2104 of FIG. 2 , the optional implementation of step S4102 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0386] In some embodiments, the above steps are all optional steps.

[0387] FIG4C is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG4C , an embodiment of the present disclosure relates to a method for determining information, which can be performed by a network device. The method may include:

[0388] Step S4301: Obtain first information.

[0389] The optional implementation of step S4301 can be found in step S2103 of FIG. 2 , the optional implementation of step S4101 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0390] Step S4302: Determine second information based on the first information.

[0391] The optional implementation of step S4302 can be found in step S2105 of FIG. 2 , the optional implementation of step S4103 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0392] In some embodiments, the above steps are all optional steps.

[0393] FIG4D is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG4D , an embodiment of the present disclosure relates to a method for determining information, which can be performed by a network device. The method may include:

[0394] Step S4401: Obtain first information.

[0395] The optional implementation of step S4401 can be found in step S2103 of FIG. 2 , the optional implementation of step S4101 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 and FIG. 4A , which will not be described in detail here.

[0396] In some embodiments, the first information is used to indicate the strength of the near-field effect experienced by the terminal device, where the near-field effect is the near-field effect of the terminal device relative to a first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

[0397] In some embodiments, the method further comprises:

[0398] The strength of the near-field effect of the terminal device is determined based on the first information.

[0399] In some embodiments, the method further comprises:

[0400] Second information is determined based on the first information, where the second information is wireless transmission parameters configured by the network device to the terminal device.

[0401] In some embodiments, the second information includes at least one of the following:

[0402] A codebook parameter, where the codebook parameter is used to indicate the codebook used by the terminal device;

[0403] Number of candidate beams.

[0404] In some embodiments, the first information is information determined by the terminal device according to a first matrix, and the first matrix is ​​a matrix obtained by the terminal device through channel estimation based on a received reference signal.

[0405] In some embodiments, the first antenna array is a one-dimensional uniform array, the first matrix includes at least one first channel matrix, the first channel matrix corresponds to a channel from an antenna port in a polarization direction of an instance of a downlink channel to the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is an antenna array for the terminal device to receive wireless signals.

[0406] In some embodiments, the first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N r is the number of antennas in the second antenna array.

[0407] In some embodiments, the first antenna array is a two-dimensional uniform array, the first matrix includes at least one second channel matrix and at least one third channel matrix, the second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, the polarization direction is the polarization direction of the first antenna array, and the second antenna array is the antenna array for the terminal device to receive wireless signals.

[0408] In some embodiments, the second channel matrix is The matrix, is the number of antenna ports in one polarization direction of the first antenna array in the vertical dimension, and the N r is the number of antennas in the second antenna array; and / or, the third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

[0409] In some embodiments, the first information is information determined based on first dimensional information and second dimensional information, the first dimensional information is information determined based on the second channel matrix, and the second dimensional information is information determined based on the third channel matrix.

[0410] In some embodiments, the first information includes any one of the following:

[0411] the first dimensional information and the second dimensional information;

[0412] an average value of the first dimension information and the second dimension information;

[0413] a maximum value of the first dimension information and the second dimension information;

[0414] The minimum value of the first dimension information and the second dimension information.

[0415] In some embodiments, the example is any one of the following:

[0416] At least one orthogonal frequency division multiplexing (OFDM) subcarrier;

[0417] at least one OFDM symbol;

[0418] At least one resource particle RE;

[0419] At least one channel state information reference signal CSI-RS resource;

[0420] At least one CSI-RS resource set.

[0421] In some embodiments, the first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

[0422] In some embodiments, the first information is carried by channel state information CSI.

[0423] FIG5 is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in FIG5 , the embodiment of the present disclosure relates to a method for determining information, which may include:

[0424] Step S5101: The terminal device sends first information to the network device.

[0425] The optional implementation of step S5101 can be found in step S2103 of FIG. 2 , step S3103 of FIG. 3A , the optional implementation of step S4101 of FIG. 4A , and other related parts in the embodiments involved in FIG. 2 , FIG. 3A or FIG. 4A , which will not be repeated here.

[0426] In some embodiments, the above method may include the method described in the embodiments of the above communication system, terminal equipment, network equipment, etc., which will not be repeated here.

[0427] Figure 6 is a flow chart of a method for determining information according to an embodiment of the present disclosure. As shown in Figure 6, an embodiment of the present disclosure relates to a method for determining information, which can be executed by a communication system and may include:

[0428] Step S6101: The terminal device calculates the covariance matrix of the downlink channel matrix.

[0429] In some embodiments, the downlink channel matrix may be the first matrix in the aforementioned embodiment of the present disclosure, and the covariance matrix may be the second matrix in the aforementioned embodiment of the present disclosure.

[0430] For example, the terminal device may calculate the covariance matrix of the downlink channel (from the network device to the terminal device) matrix The expression for calculating the covariance matrix is ​​as follows:

[0431] in,

[0432] The channel in the p-th polarization direction of the k-th instance of the downlink channel (the channel from the network device to the terminal device) corresponds to the channel from the antenna port of the first antenna array to the second antenna array, where the first antenna array is the antenna array used by the network device to transmit wireless signals and the second antenna array is the antenna array used by the terminal device to receive wireless signals.

[0433] Optionally, the first antenna array can be called a "network device antenna", "network device antenna array" or "network device transmitting antenna array"; the second antenna array can be called a "terminal device antenna", "terminal device antenna array" or "terminal device receiving antenna array".

[0434] In some embodiments, if the network device antenna array is a one-dimensional uniform array, N t N is the number of antenna ports in one polarization direction of the first antenna array. r is the number of antennas of the terminal device.

[0435] In some embodiments, the channel is obtained by the terminal device performing channel estimation based on a reference signal (such as CSI-RS, etc.) sent by the network device.

[0436] In some embodiments, the instance may be, but is not limited to, an OFDM subcarrier, an OFDM symbol, a resource element (RE), a CSI-RS resource, or a CSI-RS resource set.

[0437] Step S6102: The terminal device determines a standard orthogonal basis of the signal subspace according to the covariance matrix.

[0438] In some embodiments, the orthonormal basis of the signal subspace may be the third matrix in the aforementioned embodiment of the present disclosure.

[0439] In some embodiments, the terminal device performs eigenvalue decomposition (EVD) on the covariance matrix C to obtain the orthonormal basis U of the signal subspace. s .

[0440] in,

[0441] U n is the orthonormal basis of the noise subspace.

[0442] Diagonal matrix Λ s and Λ n are the eigenvalues ​​corresponding to the orthogonal basis vectors of the signal subspace and the noise subspace, respectively.

[0443] Step S6103: The terminal device calculates the wavefront curvature indication WFCI and reports the wavefront curvature indication to the network device.

[0444] In some embodiments, the wavefront curvature indication WFCI is the first information in the aforementioned embodiments of the present disclosure.

[0445] In some embodiments, the expression of the wavefront curvature indicator WFCI can be

[0446] Among them, λ1 and λ2 are The largest eigenvalue and the second largest eigenvalue of U s，1 and U s，2 U s Top N t -1 row and then N t -1 submatrix.

[0447] In some embodiments, the WFCI may be a part of the channel state information (CSI).

[0448] In some embodiments, the reporting of the WFCI may be accomplished via the PUCCH and / or the PUSCH.

[0449] In some embodiments, the WFCI value can quantitatively indicate the strength of the near-field effect. For example, a terminal device with a smaller WFCI, such as close to 0, indicates that the terminal device is in the far field; a larger WFCI value indicates a stronger near-field effect.

[0450] In some embodiments, if the network device antenna array is a two-dimensional uniform array, then in step S6101, the terminal device can obtain two covariance matrices of the vertical dimension and the horizontal dimension according to formula (1), which are respectively recorded as and in and The number of antennas in the vertical and horizontal dimensions of the network device’s transmitting antenna array in one polarization direction,

[0451] in,

[0452] It is the kth instance of the channel matrix from the cth column antenna in the pth polarization direction of the network device transmitting antenna array to the terminal device receiving antenna array.

[0453] It is the kth instance of the channel matrix from the rth row antenna in the pth polarization direction of the network device transmitting antenna array to the terminal device receiving antenna array.

[0454] C (v) and C (h) According to the above steps S6102 and S6103, the terminal device obtains the WFCI of the vertical dimension and the horizontal dimension, which are respectively recorded as w (v) and w (h) . Then the terminal device can report at least one of the following values ​​to the network device.

[0455] w (v) , w (h) ;

[0456] The mean of the two

[0457] The maximum value of the two (v), w (h)};

[0458] The minimum value of the two min{w (v) , w (h)}.

[0459] In some embodiments, the above-mentioned network device may be a transmitting end, and the above-mentioned terminal device may be a receiving end.

[0460] The above method is used to implement a method for identifying (determining) and reporting near-field terminal devices. By reporting the WCFI by the terminal device, the network device can know the strength of the near-field effect of the terminal device, because the WCFI can characterize the completeness (or curvature) of the electromagnetic wave front. Optionally, the network device can also correctly and accurately adapt the terminal device according to the strength of the near-field effect of the terminal device. For example, selecting and configuring a suitable codebook, configuring an appropriate number of candidate beams, and so on.

[0461] In some embodiments of the present disclosure, a communication system is provided, which may include a terminal device and a network device, wherein the terminal device can execute the information determination method executed by the terminal device in the aforementioned embodiment of the present disclosure; the network device can execute the information determination method executed by the network device in the aforementioned embodiment of the present disclosure.

[0462] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided, comprising units or modules for implementing each step performed by a terminal device in any of the above methods. For another example, another apparatus is provided, comprising units or modules for implementing each step performed by a network device (e.g., an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0463] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), and the functions of some or all of the above units or modules are realized by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0464] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of a hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document to implement the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0465] Figure 7A is a structural diagram of a terminal device 101 proposed in an embodiment of the present disclosure. As shown in Figure 7A, the terminal device 101 may include: at least one of a transceiver module 7101, a processing module 7102, etc. In some embodiments, the transceiver module 7101 is configured to send a first information, wherein the first information is used to indicate the strength of the near-field effect suffered by the terminal device, wherein the near-field effect is the near-field effect of the terminal device relative to the first antenna array, and the first antenna array is an antenna array for transmitting wireless signals from a network device to the terminal device. Optionally, the transceiver module 7101 can be used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2103, but not limited thereto) performed by the terminal device 101 in any of the above methods, which will not be repeated here. Optionally, the processing module 7102 can be used to perform at least one of the other steps (for example, step S2101, step S2102, step S2104, step S2105, but not limited thereto) performed by the terminal device 101 in any of the above methods, which will not be repeated here.

[0466] Figure 7B is a schematic diagram of the structure of a network device proposed in an embodiment of the present disclosure. As shown in Figure 7B, the network device 102 may include: at least one of a transceiver module 7201, a processing module 7202, etc. In some embodiments, the transceiver module 7201 is configured to receive first information, wherein the first information is used to indicate the strength of the near-field effect suffered by the terminal device, wherein the near-field effect is the near-field effect of the terminal device relative to the first antenna array, and the first antenna array is an antenna array for transmitting wireless signals from the network device to the terminal device. Optionally, the transceiver module 7201 can be used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2103, but not limited thereto) performed by the network device 102 in any of the above methods, which will not be repeated here. Optionally, the processing module 7202 can be used to perform at least one of the other steps (for example, step S2101, step S2102, step S2104, step S2105, but not limited thereto) performed by the network device 102 in any of the above methods, which will not be repeated here.

[0467] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0468] In some embodiments, the processing module can be a single module or include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module and the processor can be interchangeable.

[0469] Figure 8A is a schematic diagram of the structure of a communication device 8100 proposed in an embodiment of the present disclosure. Communication device 8100 can be a network device (e.g., an access network device, a core network device, etc.), or a terminal device (e.g., a user device, etc.). It can also be a chip, chip system, or processor that supports a network device to implement any of the above methods, or a chip, chip system, or processor that supports a terminal device to implement any of the above methods. Communication device 8100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0470] As shown in Figure 8A, the communication device 8100 includes one or more processors 8101. The processor 8101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process the communication protocol and communication data, and the central processing unit can be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute programs, and process program data. Optionally, the communication device 8100 can be used to perform any of the above methods. Optionally, one or more processors 8101 are used to call instructions to enable the communication device 8100 to perform any of the above methods.

[0471] In some embodiments, the communication device 8100 may further include one or more transceivers 8102. When the communication device 8100 includes one or more transceivers 8102, the transceiver 8102 may perform at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2103, but not limited thereto), and the processor 8101 may perform at least one of the other steps (for example, step S2101, step S2102, step S2104, step S2105, but not limited thereto).

[0472] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, and interface may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0473] In some embodiments, the communication device 8100 further includes one or more memories 8103 for storing data. Alternatively, all or part of the memories 8103 may be located outside the communication device 8100. In alternative embodiments, the communication device 8100 may include one or more interface circuits 8104. Optionally, the interface circuits 8104 are connected to the memories 8103 and may be configured to receive data from the memories 8103 or other devices, or to send data to the memories 8103 or other devices. For example, the interface circuits 8104 may read data stored in the memories 8103 and send the data to the processor 8101.

[0474] The communication device 8100 described in the above embodiment may be a network device or a terminal device, but the scope of the communication device 8100 described in the present disclosure is not limited thereto, and the structure of the communication device 8100 may not be limited by FIG. 8A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0475] FIG8B is a schematic diagram of the structure of a chip 8200 according to an embodiment of the present disclosure. If the communication device 8100 can be a chip or a chip system, please refer to the schematic diagram of the structure of the chip 8200 shown in FIG8B , but the present disclosure is not limited thereto.

[0476] The chip 8200 includes one or more processors 8201 , and the chip 8200 is configured to execute any of the above methods.

[0477] In some embodiments, chip 8200 further includes one or more interface circuits 8204. Alternatively, the terms interface circuit, interface, and transceiver pins may be used interchangeably. In some embodiments, chip 8200 further includes one or more memories 8203 for storing data. Alternatively, all or part of memories 8203 may be located external to chip 8200.

[0478] Optionally, the interface circuit 8204 is connected to the memory 8203. The interface circuit 8204 can be used to receive data from the memory 8203 or other devices, and the interface circuit 8204 can be used to send data to the memory 8203 or other devices. For example, the interface circuit 8204 can read data stored in the memory 8203 and send the data to the processor 8201.

[0479] In some embodiments, the interface circuit 8204 performs at least one of the communication steps (e.g., step S2103, but not limited thereto) of the aforementioned method. The interface circuit 8204 performing the communication steps (e.g., step S2103, but not limited thereto) of the aforementioned method may, for example, involve the interface circuit 8204 performing data exchange between the processor 8201, chip 8200, memory 8203, or transceiver device. In some embodiments, the processor 8201 may perform at least one of the other steps (e.g., step S2101, step S2102, step S2104, and step S2105, but not limited thereto).

[0480] The modules and / or devices described in various embodiments, such as virtual devices, physical devices, and chips, can be arbitrarily combined or separated according to circumstances. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0481] The embodiments of the present disclosure further provide a storage medium having instructions stored thereon. When the instructions are executed on the communication device 8100, the communication device 8100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0482] The present disclosure also provides a program product, which, when executed by the communication device 8100, enables the communication device 8100 to perform any of the above methods. Optionally, the program product may be a computer program product.

[0483] The embodiments of the present disclosure also provide a computer program, which, when executed on a computer, enables the computer to execute any one of the above methods.

Claims

1. A method for determining information, characterized in that: The method comprises: Send first information, where the first information is used to indicate the strength of a near-field effect on a terminal device, where the near-field effect is a near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array used by a network device to transmit wireless signals to the terminal device.

2. The method according to claim 1, characterized in that The method further comprises: Perform channel estimation according to the received reference signal to obtain a first matrix; The first information is determined according to the first matrix.

3. The method according to claim 2, characterized in that The first antenna array is a one-dimensional uniform array, and the first matrix includes at least one first channel matrix. The first channel matrix corresponds to a channel from an antenna port in a polarization direction of an instance of a downlink channel to a second antenna array, and the polarization direction is the polarization direction of the first antenna array. The second antenna array is an antenna array for the terminal device to receive wireless signals.

4. The method according to claim 3, characterized in that The first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N r is the number of antennas in the second antenna array.

5. The method according to claim 2, characterized in that: The first antenna array is a two-dimensional uniform array, and the first matrix includes at least one second channel matrix and at least one third channel matrix. The second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, and the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array. The polarization direction is the polarization direction of the first antenna array, and the second antenna array is an antenna array for the terminal device to receive wireless signals.

6. The method according to claim 5, characterized in that The second channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the vertical dimension, wherein N r is the number of antennas in the second antenna array; The third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

7. The method according to claim 5 or 6, characterized in that: Determining the first information according to the first matrix includes: determining first dimension information according to the second channel matrix; Determine second dimension information according to the third channel matrix; The first information is determined according to the first dimensional information and the second dimensional information.

8. The method according to claim 7, characterized in that The determining the first information according to the first dimensional information and the second dimensional information includes any one of the following: taking the first dimensional information and the second dimensional information as the first information; Taking the average of the first dimensional information and the second dimensional information as the first information; Taking the maximum value of the first dimensional information and the second dimensional information as the first information; The minimum value of the first dimensional information and the second dimensional information is used as the first information.

9. The method according to any one of claims 5 to 8, characterized in that The example is any of the following: At least one orthogonal frequency division multiplexing (OFDM) subcarrier; at least one OFDM symbol; At least one resource element RE; At least one channel state information reference signal CSI-RS resource; At least one CSI-RS resource set.

10. The method according to any one of claims 2 to 6, characterized in that Determining the first information according to the first matrix includes: Determine a second matrix according to the first matrix, where the second matrix is ​​a covariance matrix of the first matrix; First information is determined according to the second matrix.

11. The method according to claim 10, characterized in that Determining the second matrix according to the first matrix comprises: According to the expression Determine a second matrix; Where C represents the second matrix, H p (k) represents the first matrix, represents conjugate transposition of the first matrix, p represents the number of the polarization direction of the first antenna array, and k represents the number of the instance of the downlink channel.

12. The method according to claim 10 or 11, characterized in that: The determining the first information according to the second matrix comprises: Performing eigenvalue decomposition on the second matrix to obtain a third matrix, wherein the third matrix is ​​a standard orthogonal basis of the signal subspace; Obtain a first eigenvalue and a second eigenvalue according to the third matrix, the first eigenvalue being the maximum eigenvalue of a fourth matrix, the second eigenvalue being the second largest eigenvalue of the fourth matrix, and the fourth matrix being a matrix calculated according to the third matrix; The first information is determined according to the first eigenvalue and the second eigenvalue.

13. The method according to claim 12, characterized in that Determining the first information according to the first characteristic value and the second characteristic value includes: The ratio of the modulus of the second eigenvalue to the modulus of the first eigenvalue is used as the first information.

14. The method according to claim 1, characterized in that The first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

15. The method according to any one of claims 1 to 14, characterized in that The first information is carried by channel state information CSI.

16. A method for determining information, characterized in that: The method comprises: Receive first information, where the first information is used to indicate the strength of a near-field effect on a terminal device, where the near-field effect is a near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array used by a network device to transmit wireless signals to the terminal device.

17. The method according to claim 16, characterized in that The method further comprises: The strength of the near-field effect of the terminal device is determined according to the first information.

18. The method according to claim 16, characterized in that The method further comprises: The second information is determined according to the first information, where the second information is the wireless transmission parameters configured by the network device to the terminal device.

19. The method according to claim 18, characterized in that The second information includes at least one of the following: A codebook parameter, where the codebook parameter is used to indicate a codebook used by the terminal device; The number of candidate beams.

20. The method according to claim 16, characterized in that The first information is information determined by the terminal device according to a first matrix, and the first matrix is ​​a matrix obtained by the terminal device through channel estimation based on a received reference signal.

21. The method according to claim 20, characterized in that The first antenna array is a one-dimensional uniform array, and the first matrix includes at least one first channel matrix. The first channel matrix corresponds to a channel from an antenna port in a polarization direction of an instance of a downlink channel to a second antenna array, and the polarization direction is the polarization direction of the first antenna array. The second antenna array is an antenna array for the terminal device to receive wireless signals.

22. The method according to claim 21, characterized in that The first channel matrix is ​​N r ×N t The matrix, N t is the number of antenna ports of the first antenna array in one polarization direction, and the N r is the number of antennas in the second antenna array.

23. The method according to claim 20, characterized in that The first antenna array is a two-dimensional uniform array, and the first matrix includes at least one second channel matrix and at least one third channel matrix. The second channel matrix corresponds to a column of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array, and the third channel matrix corresponds to a row of antenna ports in a polarization direction of an instance of a downlink channel to the channel of the second antenna array. The polarization direction is the polarization direction of the first antenna array, and the second antenna array is an antenna array for the terminal device to receive wireless signals.

24. The method according to claim 23, characterized in that The second channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the vertical dimension, wherein N r is the number of antennas in the second antenna array; and / or, The third channel matrix is The matrix, is the number of antenna ports of the first antenna array in one polarization direction in the horizontal dimension.

25. The method according to claim 23 or 24, characterized in that The first information is information determined according to the first dimension information and the second dimension information, the first dimension information is information determined according to the second channel matrix, and the second dimension information is information determined according to the third channel matrix.

26. The method according to claim 25, characterized in that The first information includes any one of the following: the first dimensional information and the second dimensional information; An average value of the first dimension information and the second dimension information; The maximum value of the first dimension information and the second dimension information; The minimum value of the first dimension information and the second dimension information.

27. The method according to any one of claims 21 to 26, characterized in that The example is any of the following: At least one orthogonal frequency division multiplexing (OFDM) subcarrier; at least one OFDM symbol; At least one resource element RE; At least one channel state information reference signal CSI-RS resource; At least one CSI-RS resource set.

28. The method according to claim 16, characterized in that The first information is wavefront curvature indication information, and the wavefront curvature indication information is used to indicate the curvature of the wavefront of the electromagnetic wave received by the terminal device, and the electromagnetic wave is the electromagnetic wave emitted by the first antenna array.

29. The method according to any one of claims 16 to 26, characterized in that The first information is carried by channel state information CSI.

30. A method for determining information, characterized in that: The method comprises: The terminal device sends first information to the network device, and the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array used by the network device to transmit wireless signals to the terminal device.

31. A terminal device, characterized in that: include: The transceiver module is configured to send first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device, where the near-field effect is the near-field effect of the terminal device relative to a first antenna array, which is an antenna array used by a network device to transmit wireless signals to the terminal device.

32. A network device, characterized in that: include: The transceiver module is configured to receive first information, where the first information is used to indicate the strength of the near-field effect experienced by the terminal device. The near-field effect is the near-field effect of the terminal device relative to a first antenna array, and the first antenna array is an antenna array for a network device to transmit wireless signals to the terminal device.

33. A communication device, characterized in that: include: one or more processors; The communication device is used to execute the information determination method described in any one of claims 1 to 15 or claims 16 to 29.

34. A storage medium storing instructions, characterized in that: When the instruction is executed on a communication device, the communication device is caused to execute the information determination method according to any one of claims 1 to 15 or claims 16 to 29.

35. A communication system, characterized in that: The communication system includes a terminal device and a network device, wherein the terminal device is configured to implement the information determination method described in any one of claims 1 to 15, and the network device is configured to implement the information determination method described in any one of claims 16 to 29.

Images