Communication method, device, system and storage medium

Abstract

The invention relates to a communication method, device and system and a storage medium. The method may be performed by a terminal, comprising: determining first information, the first information comprising at least one of the following: a power scaling factor corresponding to each airspace basis vector, the airspace basis vectors being used for beamforming in multiple-input multiple-output (MIMO) transmission; each transmission layer corresponds to a power scaling factor, and each transmission layer corresponds to a data stream in MIMO transmission. According to the invention, the transmission power corresponding to each data stream can be effectively distributed, and the reliability of data transmission is effectively ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to communication methods, devices, systems and storage media. Background Art

[0002] Multiple-Input Multiple-Output (MIMO) is a wireless communication technology that can use multiple antennas to simultaneously send and receive multiple data streams on the same channel to increase data transmission rate, increase wireless range and improve performance. Summary of the invention

[0003] The embodiments of the present disclosure provide a communication method, device, system and storage medium.

[0004] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a terminal. The method includes:

[0005] Determine first information, wherein the first information includes at least one of the following:

[0006] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0007] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0008] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is performed by a network device. The method includes:

[0009] Determine first information, wherein the first information includes at least one of the following:

[0010] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0011] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0012] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0013] A processing module is used to determine first information, wherein the first information includes at least one of the following:

[0014] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0015] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0016] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0017] A processing module is used to determine first information, wherein the first information includes at least one of the following:

[0018] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0019] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0020] According to a fifth aspect of an embodiment of the present disclosure, a communication device is provided, including:

[0021] one or more processors;

[0022] The communication device is used to execute the communication method described in the first aspect or the second aspect.

[0023] According to a sixth aspect of an embodiment of the present disclosure, a communication system is proposed, including a network device and a terminal, wherein the terminal is configured to implement the communication method described in the first aspect, and the network device is configured to implement the communication method described in the second aspect.

[0024] According to a seventh aspect of an embodiment of the present disclosure, a storage medium is proposed, wherein the storage medium stores instructions, and when the instructions are executed on a communication device, the communication device executes the communication method described in the first aspect or the second aspect.

[0025] According to an eighth aspect of an embodiment of the present disclosure, a computer program product is proposed, comprising a computer program and / or instructions, wherein the computer program and / or the instructions, when executed by a communication device, implement the communication method described in the first aspect or the second aspect.

[0026] In the above embodiments, the terminal can determine the power scaling factor corresponding to each spatial basis vector in MIMO transmission, and / or the power scaling factor corresponding to each transmission layer, and can effectively allocate the transmission power corresponding to each data stream, thereby effectively ensuring the reliability of data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for describing the embodiments are introduced below. The following drawings are only some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0028] Figure 1 It is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0029] Figure 2A It is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0030] Figure 2B It is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0031] Figure 3A It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0032] Figure 3B It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0033] Figure 3C It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0034] Figure 3D It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0035] Figure 3E It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0036] Figure 3F It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0037] Figure 3G It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0038] Figure 4A It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0039] Figure 4B It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0040] Figure 4C It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0041] Figure 4D It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0042] Figure 4E It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0043] Figure 4F It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0044] Figure 4G It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0045] Figure 5 It is a schematic diagram of an exemplary flow chart of a communication method provided according to an embodiment of the present disclosure.

[0046] Fig. 6A It is a schematic diagram of an exemplary structure of a terminal provided according to an embodiment of the present disclosure.

[0047] Figure 6B It is a schematic diagram of an exemplary structure of a network device provided according to an embodiment of the present disclosure.

[0048] Fig. 7A It is a schematic diagram of an exemplary structure of a communication device provided according to an embodiment of the present disclosure.

[0049] Figure 7B It is a schematic diagram of an exemplary structure of a communication device provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0050] The embodiments of the present disclosure provide a communication method, device, system and storage medium.

[0051] In a first aspect, an embodiment of the present disclosure provides a communication method, which is executed by a terminal, and the method includes:

[0052] Determine first information, wherein the first information includes at least one of the following:

[0053] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0054] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0055] In the above embodiments, the terminal can determine the power scaling factor corresponding to each spatial basis vector in MIMO transmission, and / or the power scaling factor corresponding to each transmission layer, and can effectively allocate the transmission power corresponding to each data stream, thereby effectively ensuring the reliability of data transmission.

[0056] In conjunction with some embodiments of the first aspect, in some embodiments, each of the spatial basis vectors is configured with an amplitude scaling factor, and the determining the first information includes:

[0057] Determining a power scaling factor corresponding to each of the spatial basis vectors according to the amplitude scaling factor corresponding to each of the spatial basis vectors; and / or,

[0058] According to the amplitude scaling factor corresponding to each of the spatial basis vectors, a power scaling factor corresponding to each of the transmission layers is determined.

[0059] In the above embodiments, the power scaling factor corresponding to each spatial basis vector and / or each transmission layer can be accurately determined according to the amplitude scaling factor configured by the network device.

[0060] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information includes:

[0061] Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each of the spatial basis vectors and / or an adjusted power scaling factor corresponding to each of the transmission layers;

[0062] After the first power scaling factor is adjusted, at least one of the following is satisfied:

[0063] The sum of the normalized powers corresponding to all the adjusted spatial basis vectors is less than or equal to 1;

[0064] The sum of the normalized powers corresponding to all the transmission layers after adjustment is less than or equal to 1;

[0065] The adjusted power scaling factor corresponding to each of the spatial basis vectors is less than or equal to the square of the corresponding amplitude scaling factor.

[0066] In the above embodiment, the terminal can adjust the power scaling factors corresponding to part or all of the spatial basis vectors or transmission layers, which can effectively ensure that the adjusted transmission power does not exceed the total power of the terminal and does not exceed the amplitude constraint of the network device on the spatial basis vectors.

[0067] In conjunction with some embodiments of the first aspect, in some embodiments, the first power scaling factor includes at least one of the following:

[0068] a power scaling factor corresponding to a candidate spatial basis vector, wherein the power scaling factor corresponding to the candidate spatial basis vector is greater than or equal to a first threshold;

[0069] a power scaling factor corresponding to a first spatial basis vector, wherein the first spatial basis vector is an optimal spatial basis vector among the candidate spatial basis vectors;

[0070] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0071] A power scaling factor corresponding to a first transmission layer, where the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0072] In the above embodiment, the terminal can adjust the power scaling factor corresponding to each spatial basis vector or transmission layer that meets the corresponding conditions, that is, the terminal can adjust each unconstrained power scaling factor, which can effectively ensure the reliability of power adjustment.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the first threshold is any one of the following: or 1;

[0074] Among them, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0075] In combination with some embodiments of the first aspect, in some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords among the codewords adopted for the MIMO transmission.

[0076] In the above embodiment, the terminal can adjust the power of the spatial basis vectors and / or the transmission layer corresponding to all or part of the codewords, which effectively improves the flexibility of power adjustment.

[0077] In combination with some embodiments of the first aspect, in some embodiments, the method further includes:

[0078] Sending second information to the network device, wherein the second information includes at least one of the following:

[0079] an adjusted power scaling factor corresponding to each of the spatial basis vectors;

[0080] an adjusted power scaling factor corresponding to each of the transmission layers;

[0081] an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors;

[0082] the first spatial basis vector;

[0083] an adjusted power scaling factor corresponding to the first spatial basis vector;

[0084] an adjusted power scaling factor corresponding to each of the candidate transmission layers;

[0085] the first transport layer;

[0086] The adjusted power scaling factor corresponding to the first transmission layer.

[0087] In the above embodiment, after adjusting the power, the terminal may report to the network device through the second information, so as to ensure that the network device and the terminal can reach an agreement on power-related parameters.

[0088] In conjunction with some embodiments of the first aspect, in some embodiments, the method includes:

[0089] receiving third information sent by the network device;

[0090] Determining the first power scaling factor according to the third information;

[0091] The third information is used to indicate at least one of the following:

[0092] Whether to adjust the power scaling factor corresponding to the candidate spatial basis vector;

[0093] Whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0094] whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0095] Whether to adjust the power scaling factor corresponding to the first transmission layer.

[0096] In the above embodiment, the terminal may determine which power scaling factors to adjust according to the instruction of the network device.

[0097] In conjunction with some embodiments of the first aspect, in some embodiments, the method includes:

[0098] The first power scaling factor is determined by negotiation with a network device.

[0099] In the above embodiment, the terminal and the network device may determine which power scaling factors to adjust through negotiation.

[0100] In combination with some embodiments of the first aspect, in some embodiments, the first power scaling factor includes the candidate spatial basis vector, or the power scaling factor corresponding to the candidate transmission layer;

[0101] The adjusting the first power scaling factor includes:

[0102] The power scaling factor corresponding to each of the candidate spatial basis vectors or the power scaling factor corresponding to each of the candidate transmission layers is adjusted to

[0103] Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s nrepresents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0104] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0105] In combination with some embodiments of the first aspect, in some embodiments, the first power scaling factor includes the first spatial basis vector or the first transmission layer corresponding power scaling factor;

[0106] The adjusting the first power scaling factor includes:

[0107] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0108]

[0109] Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0110] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0111] In combination with some embodiments of the first aspect, in some embodiments, the first power scaling factor includes the candidate spatial basis vector, or the power scaling factor corresponding to the candidate transmission layer;

[0112] The adjusting the first power scaling factor includes:

[0113] Determine that the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers is greater than or equal to the first threshold, and adjust the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold.

[0114] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first information includes:

[0115] receiving second information sent by the network device;

[0116] determining the first information according to the second information;

[0117] The second information includes at least one of the following:

[0118] an adjusted power scaling factor corresponding to each of the spatial basis vectors;

[0119] an adjusted power scaling factor corresponding to each of the transmission layers;

[0120] an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors;

[0121] the first spatial basis vector;

[0122] an adjusted power scaling factor corresponding to the first spatial basis vector;

[0123] an adjusted power scaling factor corresponding to each of the candidate transmission layers;

[0124] the first transport layer;

[0125] The adjusted power scaling factor corresponding to the first transmission layer.

[0126] In the above embodiment, the adjustment of the power scaling factor can be performed by the network device, and the terminal can determine the power scaling factor corresponding to each spatial basis vector used by it and / or the power scaling factor corresponding to each transmission layer by receiving the second information sent by the network device.

[0127] In a second aspect, an embodiment of the present disclosure provides a communication method, which is performed by a network device, and the method includes:

[0128] Determine first information, wherein the first information includes at least one of the following:

[0129] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0130] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0131] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0132] Sending fourth information, where the fourth information is used to indicate an amplitude scaling factor corresponding to each of the spatial domain basis vectors;

[0133] The amplitude scaling factor is used to determine a power scaling factor corresponding to each of the spatial basis vectors and / or a power scaling factor corresponding to each of the transmission layers.

[0134] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first information includes:

[0135] Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each of the spatial basis vectors and / or an adjusted power scaling factor corresponding to each of the transmission layers;

[0136] After the first power scaling factor is adjusted, at least one of the following is satisfied:

[0137] The sum of the normalized powers corresponding to all the adjusted spatial basis vectors is less than or equal to 1;

[0138] The sum of the normalized powers corresponding to all the transmission layers after adjustment is less than or equal to 1;

[0139] The adjusted power scaling factor corresponding to each of the spatial basis vectors is less than or equal to the square of the corresponding amplitude scaling factor.

[0140] In conjunction with some embodiments of the second aspect, in some embodiments, the first power scaling factor includes at least one of the following:

[0141] a power scaling factor corresponding to a candidate spatial basis vector, wherein the power scaling factor corresponding to the candidate spatial basis vector is greater than or equal to a first threshold;

[0142] a power scaling factor corresponding to a first spatial basis vector, wherein the first spatial basis vector is an optimal spatial basis vector among the candidate spatial basis vectors;

[0143] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0144] A power scaling factor corresponding to a first transmission layer, where the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0145] In conjunction with some embodiments of the second aspect, in some embodiments, the first threshold is any one of the following: or 1;

[0146] Among them, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0147] In combination with some embodiments of the second aspect, in some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords among the codewords adopted for the MIMO transmission.

[0148] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0149] Sending second information to the terminal, where the second information includes at least one of the following:

[0150] an adjusted power scaling factor corresponding to each of the spatial basis vectors;

[0151] an adjusted power scaling factor corresponding to each of the transmission layers;

[0152] an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors;

[0153] the first spatial basis vector;

[0154] an adjusted power scaling factor corresponding to the first spatial basis vector;

[0155] an adjusted power scaling factor corresponding to each of the candidate transmission layers;

[0156] the first transport layer;

[0157] The adjusted power scaling factor corresponding to the first transmission layer.

[0158] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0159] receiving third information sent by the terminal;

[0160] Determining the first power scaling factor according to the third information;

[0161] The third information is used to indicate at least one of the following:

[0162] Whether to adjust the power scaling factor corresponding to the candidate spatial basis vector;

[0163] Whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0164] whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0165] Whether to adjust the power scaling factor corresponding to the first transmission layer.

[0166] In conjunction with some embodiments of the second aspect, in some embodiments, the method includes:

[0167] The first power scaling factor is determined by negotiation with the terminal.

[0168] In combination with some embodiments of the second aspect, in some embodiments, the first power scaling factor includes the candidate spatial basis vector, or the power scaling factor corresponding to the candidate transmission layer;

[0169] The adjusting the first power scaling factor includes:

[0170] The power scaling factor corresponding to each of the candidate spatial basis vectors or the power scaling factor corresponding to each of the candidate transmission layers is adjusted to

[0171] Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0172] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0173] In conjunction with some embodiments of the second aspect, in some embodiments, the first power scaling factor includes the first spatial basis vector or the first transmission layer corresponding power scaling factor;

[0174] The adjusting the first power scaling factor includes:

[0175] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0176]

[0177] Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0178] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0179] In combination with some embodiments of the second aspect, in some embodiments, the first power scaling factor includes the candidate spatial basis vector, or the power scaling factor corresponding to the candidate transmission layer;

[0180] The adjusting the first power scaling factor includes:

[0181] Determine that the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers is greater than or equal to the first threshold, and adjust the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold.

[0182] In conjunction with some embodiments of the second aspect, in some embodiments, determining the first information includes:

[0183] receiving second information sent by the terminal;

[0184] determining the first information according to the second information;

[0185] The second information includes at least one of the following:

[0186] an adjusted power scaling factor corresponding to each of the spatial basis vectors;

[0187] an adjusted power scaling factor corresponding to each of the transmission layers;

[0188] an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors;

[0189] the first spatial basis vector;

[0190] an adjusted power scaling factor corresponding to the first spatial basis vector;

[0191] an adjusted power scaling factor corresponding to each of the candidate transmission layers;

[0192] the first transport layer;

[0193] The adjusted power scaling factor corresponding to the first transmission layer.

[0194] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0195] A processing module is used to determine first information, wherein the first information includes at least one of the following:

[0196] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0197] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0198] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0199] A processing module is used to determine first information, wherein the first information includes at least one of the following:

[0200] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0201] A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

[0202] In a fifth aspect, an embodiment of the present disclosure provides a communication device, including:

[0203] one or more processors;

[0204] The communication device is used to execute the communication method described in the first aspect or the second aspect.

[0205] In a sixth aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal 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.

[0206] In a seventh aspect, an embodiment of the present disclosure proposes a storage medium, wherein the storage medium 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 and second aspects.

[0207] In an eighth aspect, an embodiment of the present disclosure proposes a computer program product, including a computer program and / or instructions. When the above-mentioned computer program and / or instructions are executed by a communication device, the above-mentioned communication device executes the method described in the optional implementation manner of the first aspect and the second aspect.

[0208] In a ninth 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 and second aspects.

[0209] In a tenth aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the method described in the optional implementation of the first and second aspects above.

[0210] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips or chip systems are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods, which will not be repeated here.

[0211] The embodiments of the present disclosure provide communication methods, devices, systems and storage media. In some embodiments, the terms communication method, information processing method, capability reporting method, etc. can be replaced with each other, the terms communication device, information processing device, capability reporting device, etc. can be replaced with each other, and the terms information processing system, communication system, etc. can be replaced with each other.

[0212] The embodiments of the present disclosure are not exhaustive, but are only 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 of the steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0213] In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the embodiments are consistent and can be referenced to each other, and the technical features in different embodiments can be combined to form a new embodiment based on their internal logical relationships.

[0214] 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.

[0215] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular form, such as "a", "an", "the", "above", "said", "aforementioned", "this", 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 after the article may be understood as a singular expression or a plural expression.

[0216] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0217] In some embodiments, the terms “at least one,” “one or more,” “a plurality of,” “multiple,” etc. may be used interchangeably.

[0218] In some embodiments, "at least one of A and B", "A and / or B", "A in one case, B in another case", "in response to one case A, in response to another case B", etc., may include the following technical solutions according to 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); in some embodiments, A and B (both A and B are executed). When there are more branches such as A, B, C, etc., the above is also similar.

[0219] In some embodiments, the recording method of "A or B" may include the following technical solutions according to 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). When there are more branches such as A, B, C, etc., the above is also similar.

[0220] 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 restrictions on the position, order, priority, quantity or content of the description objects. The statement of the description object refers to the description in the context of the claims or embodiments, and should not constitute unnecessary restrictions 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", and the "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 the "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes may be the same or different. For example, if the description object is "device", then the "first device" and the "second device" may be the same device or different devices, and their types may be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" may be the same information or different information, and their contents may be the same or different.

[0221] 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.

[0222] In some embodiments, terms such as "time / frequency", "time / frequency domain", etc. refer to the time domain and / or the frequency domain.

[0223] 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.

[0224] 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 lower 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", "no more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0225] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded 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.

[0226] In some embodiments, "network" may be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0227] 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 (reception point, RP)", "transmission and / or reception point (transmission / 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)", "serving cell (serving cell)", "carrier (carrier)", "component carrier (component carrier)", "bandwidth part (bandwidth part, BWP)" and the like can be used interchangeably.

[0228] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client and the like can be used interchangeably.

[0229] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the access network device, the core network device, or the network device and the communication between the terminals is replaced by the communication between multiple terminals (for example, device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal 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 terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0230] In some embodiments, the terminal 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 also be configured to have a structure that has all or part of the functions of the terminal.

[0231] In some embodiments, acquisition of data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0232] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0233] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure may be implemented as an independent embodiment, and the combination of any elements, any rows, or any columns may also be implemented as an independent embodiment.

[0234] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. Figure 1 As shown, the communication system 100 includes a terminal 101 and a network device 102. Optionally, the network device 102 may include at least one of an access network device and a core network device.

[0235] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer (Pad), 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 a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited to these.

[0236] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a 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 (CloudRAN), 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.

[0237] In some embodiments, the technical solution of the present disclosure may be applicable 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 may become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces may be implemented through software or programs.

[0238] In some embodiments, the access network device may be composed of a centralized unit (central unit, CU) and a distributed unit (distributed unit, DU), wherein the CU may also be referred to as a control unit (control unit). The CU-DU structure may be used to split the protocol layer of the access network device, with some functions of the protocol layer being centrally controlled by the CU, and the remaining part or all of the functions of the protocol layer being distributed in the DU, and the DU being centrally controlled by the CU, but not limited to this.

[0239] In some embodiments, the core network device may be a device including a first network element, a second network element, etc., or may be a plurality of devices or a group of devices, respectively including all or part of the first network element, the second network element, etc. The network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0240] 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. A person of ordinary skill in the art 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.

[0241] The following embodiments of the present disclosure can be applied to Figure 1 The communication system 100, or a portion thereof, is shown but is not limited thereto. Figure 1 The various entities shown are examples, and the communication system may include Figure 1 All or part of the subject, and may also include Figure 1 The number and form of other entities are arbitrary, each entity can be physical or virtual, the connection relationship between the entities is illustrative, the entities can be connected or disconnected, the connection can be in any way, it can be direct or indirect, and it can be wired or wireless.

[0242] 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 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) network, Device-to-Device (D2D) system, Machine-to-Machine (M2M) system, Internet of Things (IoT) system, Vehicle-to-Everything (V2X), systems using other communication methods, next-generation systems based on them, etc. In addition, multiple systems can also be combined (for example, a combination of LTE or LTE-A and 5G, etc.) for application.

[0243] In some embodiments, when the transmission rank of MIMO transmission is RI=v=1, in the frequency band 6425–7125MHz, if feedback is performed based on the Rel-19 Type I codebook, when a two-dimensional discrete Fourier transform (2D-DFT) vector is used as the spatial basis vector (SD basis vector) of the codebook, it may generate side lobes or grating lobes in undesirable directions. This high gain in undesirable directions may cause interference to other systems with which the ground network plans to coexist by sharing the same time and frequency resources. For example, when the main beam is pointed above the horizon to serve user equipment (UEs) in a high-rise building, it may cause interference to the satellite system.

[0244] In some embodiments, to solve this problem, the SD basis vectors can be constrained by amplitude. The amplitude constraint is constrained by each SD basis vector group, each group contains X1X2SD basis vectors, and the amplitude value range is The amplitude constraint can be indicated by 3 bits.

[0245] In some embodiments, when v>1, if the SD basis vector selected by the terminal has been configured with an amplitude constraint by the network, the power corresponding to the SD basis vector can be determined according to the amplitude scaling factor configured by the network, and the power value is Among them, s i represents the amplitude scaling factor of the i-th SD basis vector configured in the network. Otherwise, the SD basis vector has no amplitude constraint. If the power corresponding to the SDbasis vector without amplitude constraint is still determined in the traditional way, it is When the configured amplitude scaling factor is less than , the total power will be less than 1 (assuming the total power is normalized to 1).

[0246] For example, when v=3 is transmitted, the codebook structure based on the Rel-19 Type I codebook is as follows:

[0247] Assume that the network vector v l,m The configured amplitude scaling factor is v l′,m′ The configured amplitude scaling factor is From the above formula, we can see that there are two layers using v l,m , then the total power of these two layers is Therefore, the total power is Therefore, there is In some embodiments, the network can also directly constrain the power corresponding to each spatial basis vector or the power corresponding to each layer by configuring the corresponding power scaling factor. Using the above codebook, if the network configures the power scaling factor of the first and third layers to be 1 / 3, and the power scaling factor of the second layer to be 1 / 2, then the total power is 1 / 3+1 / 3+1 / 2>1, which exceeds the terminal's capability.

[0248] With reference to the above embodiments, how to ensure that power is effectively constrained while ensuring the reliability of power allocation is an urgent problem to be solved.

[0249] Figure 2A FIG. 1 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. Figure 2A As shown, the embodiment of the present disclosure relates to a communication method, and the method includes:

[0250] Step S2101: The network device sends fourth information to the terminal.

[0251] In some embodiments, the fourth information is used to indicate or configure an amplitude scaling factor corresponding to at least one spatial basis vector. Optionally, the fourth information is used to indicate or configure an amplitude scaling factor corresponding to each spatial basis vector.

[0252] It is worth noting that the spatial basis vectors involved in the embodiments of the present disclosure may refer to the spatial basis vectors selected by the terminal in MIMO transmission. Optionally, the spatial basis vectors are used for beamforming in MIMO transmission.

[0253] In some embodiments, the amplitude scaling factor may be used to determine a power scaling factor corresponding to each spatial basis vector and / or to determine a power scaling factor corresponding to each transmission layer.

[0254] It is understood that each transmission layer may correspond to a data stream in MIMO transmission. In MIMO transmission, data may be divided into multiple independent data streams, each of which is transmitted in parallel through different antennas. These data streams are separated and recombined at the receiving end to recover the original data.

[0255] In some embodiments, the fourth information may only indicate the amplitude scaling factors corresponding to some of the spatial basis vectors selected by the terminal. That is, the network device may only configure the amplitude scaling factors corresponding to some of the spatial basis vectors.

[0256] In some embodiments, the fourth information may be referred to as “amplitude configuration information”, “amplitude indication information”, etc., and the embodiments of the present disclosure do not limit its name.

[0257] In some embodiments, the fourth information may be used to indicate or configure a power scaling factor corresponding to at least one spatial basis vector. Optionally, the fourth information is used to indicate or configure a power scaling factor corresponding to at least one transmission layer.

[0258] In some embodiments, the terminal receives fourth information sent by the network device.

[0259] Step S2102: The terminal determines a power scaling factor corresponding to each spatial basis vector and / or determines a power scaling factor corresponding to each transmission layer according to the fourth information.

[0260] In some embodiments, the terminal determines a power scaling factor corresponding to each spatial basis vector according to the fourth information. Optionally, the terminal determines a power scaling factor corresponding to each transmission layer according to the fourth information.

[0261] In some embodiments, the terminal determines the power scaling factor corresponding to each spatial basis vector according to the amplitude scaling factor configured or indicated by the fourth information. Optionally, the terminal determines the power scaling factor corresponding to each transmission layer according to the amplitude scaling factor configured or indicated by the fourth information.

[0262] In some embodiments, the terminal determines the power scaling factor corresponding to each spatial basis vector according to the power scaling factor configured or indicated by the fourth information. Optionally, the terminal determines the power scaling factor corresponding to each transmission layer according to the power scaling factor configured or indicated by the fourth information.

[0263] In some embodiments, the power scaling factor corresponding to the spatial basis vector can be used to constrain the total power of the beam corresponding to the spatial basis vector. For example, if a spatial basis vector corresponds to multiple transmission layers, the sum of the powers (normalized powers) corresponding to the multiple transmission layers can be equal to the power scaling factor.

[0264] In some embodiments, the power scaling factor corresponding to a transmission layer may be used to constrain the total power corresponding to the transmission layer. For example, the power corresponding to each transmission layer may be equal to the power scaling factor corresponding to the transmission layer.

[0265] In some embodiments, the power scaling factor corresponding to a transmission layer may refer to the power scaling factor corresponding to the spatial basis vector used by the transmission layer. For example, if the power scaling factor corresponding to the spatial basis vector used by a transmission layer is Then the power scaling factor corresponding to the transmission layer is also

[0266] In some embodiments, the network device may also determine the power scaling factor corresponding to each spatial basis vector and / or determine the power scaling factor corresponding to each transmission layer based on fourth information, i.e., the amplitude scaling factor configured by the network device for the terminal.

[0267] In some embodiments, the network device determines a power scaling factor corresponding to each spatial basis vector according to the fourth information. Optionally, the network device determines a power scaling factor corresponding to each transmission layer according to the fourth information.

[0268] In some embodiments, for any spatial basis vector, the terminal and / or the network device may determine the power scaling factor corresponding to the spatial basis vector as the square of the amplitude scaling factor.

[0269] For example, for any spatial basis vector, if the spatial basis vector corresponds to one transmission layer, the terminal and / or network device may determine the power scaling factor corresponding to the spatial basis vector based on the amplitude scaling factor s corresponding to the spatial basis vector as: And determine the power scaling factor of the transmission layer corresponding to the spatial basis vector as Among them, if the amplitude scaling factor s configured by the network device for a certain spatial basis vector is less than or equal to The power scaling factor corresponding to the spatial basis vector can be determined as If the amplitude scaling factor s configured by the network device for a certain spatial basis vector is greater than The power scaling factor corresponding to the spatial basis vector can be determined as s 2 .

[0270] In some embodiments, if the network device only configures the amplitude scaling factor corresponding to some of the spatial basis vectors, for the spatial basis vectors that are not configured with the amplitude scaling factor, the terminal or the network device may determine the power scaling factor corresponding to the spatial basis vector as a preset value, which may be, for example, or, Or other predefined values. Wherein, v represents the rank corresponding to MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0271] In some embodiments, after determining the power scaling factor corresponding to each spatial basis vector and / or determining the power scaling factor corresponding to each transmission layer, the terminal or network device may further determine at least one of the following:

[0272] The sum of the normalized powers corresponding to all spatial basis vectors; The sum of the normalized powers corresponding to all transmission layers.

[0273] In some embodiments, if the terminal determines that at least one of the following is satisfied, one or more subsequent steps S2103 to S2106 are executed (for example, expecting to receive the third information sent by the network device): the sum of the normalized powers corresponding to all spatial basis vectors is not equal to 1 (or greater than 1); the sum of the normalized powers corresponding to all transmission layers is not equal to 1 (or greater than 1); the network device only configures the amplitude scaling factors corresponding to some spatial basis vectors.

[0274] In some embodiments, if the terminal determines that at least one of the following is met, the first information is determined, and any subsequent steps S2103 to S2106 are not executed: the sum of the normalized powers corresponding to all spatial basis vectors is equal to 1; the sum of the normalized powers corresponding to all transmission layers is equal to 1; the network device configures the amplitude scaling factor corresponding to each spatial basis vector.

[0275] That is, the terminal can adjust the power scaling factor corresponding to each spatial basis vector or the power scaling factor corresponding to each transmission layer only when it is determined that the sum of the normalized powers corresponding to all spatial basis vectors is not equal to 1 (or greater than 1), or the sum of the normalized powers corresponding to all spatial basis vectors is not equal to 1 (or greater than 1), or the network has only configured the amplitude scaling factors corresponding to some spatial basis vectors. Conversely, the terminal can directly obtain the first information, i.e., the power scaling factor corresponding to each spatial basis vector used by the terminal, and / or the power scaling factor corresponding to each transmission layer used by the terminal, based on the fourth information.

[0276] In some embodiments, if the terminal determines not to adjust the power scaling factor corresponding to each spatial basis vector or the power scaling factor corresponding to each transmission layer, a corresponding indication information may be sent to the network device to indicate that the terminal has not adjusted the power scaling factor. Optionally, after receiving the indication information, the network device may determine the power scaling factor corresponding to each spatial basis vector and / or each transmission layer, i.e., the first information, based on the amplitude scaling factor corresponding to each spatial basis vector configured for the terminal.

[0277] In some embodiments, the power scaling factors corresponding to each spatial basis vector and / or the power scaling factors corresponding to each transmission layer determined in step S2102 may be referred to as initial power scaling factors. In some possible implementations, the terminal or network device may further adjust these power scaling factors.

[0278] Step S2103: The network device sends third information to the terminal.

[0279] In some embodiments, the third information is used to determine the first power scaling factor. Optionally, the terminal determines the first power scaling factor according to the third information.

[0280] Optionally, the third information is used to indicate at least one of the following: whether to adjust the power scaling factor corresponding to the candidate spatial basis vector; whether to adjust the power scaling factor corresponding to the candidate transmission layer; whether to adjust the power scaling factor corresponding to the first spatial basis vector; whether to adjust the power scaling factor corresponding to the first transmission layer.

[0281] For example, if the third information is used to indicate adjustment of the power scaling factor corresponding to the candidate spatial basis vector, the terminal can determine that the first power scaling factor includes the power scaling factor corresponding to the candidate spatial basis vector. If the third information is used to indicate adjustment of the power scaling factor corresponding to the first spatial basis vector, the terminal can determine that the first power scaling factor includes the power scaling factor corresponding to the first spatial basis vector.

[0282] In some embodiments, the third information is further used to indicate an adjustment value corresponding to the first power scaling factor. Optionally, the adjustment value may be predefined or determined by the network device.

[0283] For example, if the third information instructs the terminal to adjust the power scaling factor corresponding to the candidate spatial basis vector, the terminal can determine that the first power scaling factor includes the power scaling factor corresponding to the candidate spatial basis vector. Furthermore, the terminal can also adjust the power scaling factor corresponding to the candidate spatial basis vector to the adjustment value indicated by the third information according to the instruction of the third information.

[0284] In some embodiments, step S2103 is optional, and the terminal may determine the first power scaling factor and / or the adjustment value corresponding to the first power scaling factor by itself.

[0285] In some embodiments, the network device may send the third information via at least one of: Radio Resource Control (RRC) signaling, Media Access Control-Control Element (MAC-CE) or Downlink Control Information (DCI) signaling.

[0286] Step S2104: The terminal determines a first power scaling factor.

[0287] In some embodiments, the first power scaling factor includes at least one of:

[0288] A power scaling factor corresponding to the candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold;

[0289] A power scaling factor corresponding to a first spatial basis vector, where the first spatial basis vector is an optimal spatial basis vector among candidate spatial basis vectors;

[0290] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0291] The power scaling factor corresponding to the first transmission layer, the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0292] In some embodiments, the terminal may traverse all candidate spatial basis vectors and determine, based on the received power, the spatial basis vector with the largest received power as the optimal spatial basis vector. Optionally, the terminal may traverse all candidate layers and determine, based on the received power, the transmission layer with the largest received power as the strongest transmission layer.

[0293] It is worth noting that the embodiments of the present disclosure do not limit the number of candidate spatial basis vectors, first spatial basis vectors, candidate transmission layers, and first transmission layers.

[0294] For example, the number of candidate spatial basis vectors may be one or more. The number of candidate transmission layers may be greater than or equal to the number of candidate spatial basis vectors. For example, multiple candidate transmission layers may use the same candidate spatial basis vector, and the number of transmission layers corresponding to one candidate spatial basis vector may be greater than or equal to 1. The number of first spatial basis vectors or first transmission layers may also be one or more. For example, the receiving power of multiple spatial basis vectors or multiple transmission layers is the same and greater than that of other spatial basis vectors or other transmission layers.

[0295] In some embodiments, the spatial basis vectors used by the first transmission layer may be the first spatial basis vectors, that is, the spatial basis vectors used by the strongest layer in the candidate layers may be the optimal spatial basis vectors.

[0296] In some embodiments, the first threshold may be or, Optionally, the first threshold may also be any other predefined value, and the embodiment of the present disclosure does not limit the value of the first threshold. Wherein, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0297] It can be understood that for each spatial basis vector or each transmission layer, the corresponding first threshold may be different. For example, for a certain spatial basis vector, if only one transmission layer uses the spatial basis vector, the first threshold corresponding to the spatial basis vector and the transmission layer may be If multiple transmission layers use the spatial basis vector, the spatial basis vector and the first threshold corresponding to each transmission layer using the spatial basis vector can be P represents the number of multiple transport layers.

[0298] In some embodiments, the amplitude scaling factor corresponding to the candidate spatial basis vector is greater than or equal to the root mean square of a first threshold. For example, the first threshold is The candidate spatial basis vectors may be the spatial basis vectors used by the terminal whose corresponding amplitude scaling factor is less than or equal to The spatial basis vectors of .

[0299] In some embodiments, the candidate spatial basis vectors may also be referred to as unconstrained spatial basis vectors. Optionally, the candidate spatial basis vectors may include spatial basis vectors for which the network side does not configure the corresponding amplitude scaling factor. For example, the first threshold is For spatial basis vectors without amplitude scaling factors, the corresponding power scaling factors can be defaulted to At this time, the spatial basis vector can be determined as a candidate spatial basis vector.

[0300] In some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords used in the MIMO transmission. That is, the terminal can adjust the power scaling factor corresponding to the spatial basis vector (or transmission layer) corresponding to all or part of the codewords.

[0301] In other words, multiple (such as 2) codewords can be used for transmission in MIMO transmission (for example, when the transmission rank is greater than 4). When adjusting the power, only the power scaling factor corresponding to the spatial basis vector (or transmission layer) corresponding to the selected one or more codewords (the first codeword) can be adjusted.

[0302] Optionally, the first codeword may be determined by the terminal and reported to the network device, or may be indicated by the network device, or may be determined by negotiation between the terminal and the network device, which is not limited in the embodiments of the present disclosure.

[0303] It can be understood that when the candidate spatial basis vector corresponds to the first codeword, the codeword corresponding to the candidate transmission layer also corresponds to the first codeword.

[0304] In some embodiments, the terminal may determine the first power scaling factor according to the third information. The optional implementation of the terminal determining the first power scaling factor according to the third information may refer to the related part in step S2103, which will not be described in detail here.

[0305] In some embodiments, the terminal may determine the first power scaling factor according to a predefined policy.

[0306] For example, if the terminal determines in step S2102 that the normalized power corresponding to all spatial basis vectors is not equal to 1, the terminal can determine that the first power scaling factor includes the candidate spatial basis vector according to a predefined strategy, that is, adjust the power scaling factor corresponding to the candidate spatial basis vector; or, the terminal can determine that the first power scaling factor includes the first spatial basis vector according to a predefined strategy, that is, adjust the power scaling factor corresponding to the first spatial basis vector.

[0307] In some embodiments, the terminal and the network device may also determine the first power scaling factor by negotiation. Optionally, the terminal and the network device may also determine the adjustment value of the first power scaling factor by negotiation. For example, the terminal and the network device negotiate to determine the power scaling factor corresponding to each adjusted spatial basis vector, and / or the power scaling factor corresponding to each adjusted transmission layer.

[0308] In some embodiments, after determining the first power scaling factor, the terminal executes step S2105 and / or step S2106.

[0309] It is worth noting that the first power scaling factor involved in the embodiment of the present disclosure may refer to a power scaling factor that needs to be adjusted. The power scaling factor that needs to be adjusted may be a power scaling factor determined by the terminal according to the fourth information. For example, the terminal may adjust the initial power scaling factor determined in step S2102 to meet the corresponding requirements.

[0310] Step S2105: The terminal adjusts the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0311] In some embodiments, the terminal may adjust the first power scaling factor according to the third information. Optionally, the adjustment value corresponding to the first power scaling factor may be determined according to the third information.

[0312] In some embodiments, the terminal may also adjust the first power scaling factor according to a predefined strategy.

[0313] In some embodiments, after the first power scaling factor is adjusted, at least one of the following is satisfied:

[0314] The sum of the normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0315] The sum of the normalized powers corresponding to all transmission layers after adjustment is less than or equal to 1;

[0316] The adjusted power scaling factor corresponding to each spatial basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0317] Optionally, the sum of normalized powers corresponding to all spatial basis vectors after adjustment is equal to 1. Optionally, the sum of normalized powers corresponding to all transmission layers after adjustment is equal to 1.

[0318] Optionally, if the adjusted power scaling factor of a spatial basis vector is less than or equal to the square of the amplitude scaling factor configured for the spatial basis vector, the adjusted power scaling factor may be further adjusted to be equal to the square of the amplitude scaling factor configured for the spatial basis vector.

[0319] For example, referring to the following optional implementation, if the power scaling factor corresponding to the first spatial basis vector is adjusted to Afterwards, it is found that the corresponding power scaling factor is adjusted to Greater than s 2 , the power scaling factor corresponding to the first spatial basis vector can be adjusted to s 2 , where s represents the amplitude scaling factor configured by the network device for the first spatial basis vector.

[0320] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer; and adjusting the first power scaling factor includes:

[0321] The power scaling factor corresponding to each candidate spatial basis vector or the power scaling factor corresponding to each candidate transmission layer is adjusted to

[0322] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0323] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0324] It is understandable that the second spatial basis vector may be a spatial basis vector other than the candidate spatial basis vector. Optionally, the amplitude scaling factor corresponding to the second spatial basis vector is less than the root mean square of the first threshold. Optionally, the second spatial basis vector may be referred to as a constrained spatial basis vector.

[0325] That is to say, when adjusting the power scaling factor corresponding to the candidate spatial basis vector or the candidate transmission layer, the sum of the normalized powers corresponding to all candidate spatial basis vectors or all candidate transmission layers can be subtracted from the total power and then averaged to obtain the power scaling factor corresponding to each candidate spatial basis vector or candidate transmission layer. The total power can be the normalized total power, that is, the value of the total power can be 1.

[0326] In some embodiments, the first power scaling factor comprises a first spatial basis vector or a first transmission layer corresponding power scaling factor;

[0327] The first power scaling factor is adjusted, including:

[0328] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0329] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0330] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0331] That is to say, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted from the sum of the normalized powers corresponding to all spatial basis vectors except the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) to obtain the power scaling factor corresponding to the first spatial basis vector (or the first transmission layer).

[0332] Optionally, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer may be adjusted to or, Where M represents the number of spatial basis vectors other than the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer), r m represents the number of transmission layers corresponding to the mth spatial basis vector among these spatial basis vectors, s m Represents the amplitude scaling factor corresponding to the mth spatial basis vector among these spatial basis vectors.

[0333] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0334] The first power scaling factor is adjusted, including:

[0335] Determine that a power scaling factor corresponding to each spatial basis vector or each transmission layer is greater than or equal to a first threshold, and adjust the power scaling factor corresponding to each spatial basis vector or each transmission layer to the first threshold.

[0336] That is to say, when the power scaling factors corresponding to all spatial basis vectors used in MIMO transmission are greater than the first threshold, the power scaling factor corresponding to each spatial basis vector can be determined as the first threshold. Alternatively, when the power scaling factors corresponding to all transmission layers in MIMO transmission are greater than the first threshold, the power scaling factor corresponding to each transmission layer can be determined as the first threshold.

[0337] In some embodiments, the network device may configure amplitude scaling factors for only some of the spatial basis vectors, the candidate spatial basis vectors may include spatial basis vectors that are not configured with amplitude scaling factors, and the candidate transmission layers may include transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors. When adjusting the first power scaling factor, only the spatial basis vectors that are not configured with amplitude scaling factors in the candidate spatial basis vectors may be adjusted, or only the transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors in the candidate transmission layers may be adjusted. Optionally, the first spatial basis vector is the optimal spatial basis vector among the spatial basis vectors that are not configured with amplitude scaling factors, and the first transmission layer is the strongest transmission layer among the transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors.

[0338] Optionally, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer, and adjusting the first power scaling factor includes:

[0339] The power scaling factor corresponding to each first candidate basis vector or the power scaling factor corresponding to each first candidate transmission layer is adjusted to

[0340] Wherein, the first candidate basis vector is a spatial basis vector in the candidate spatial basis vectors that is not configured with an amplitude scaling factor, the first candidate transmission layer is a transmission layer in the candidate transmission layer that uses a spatial basis vector in the candidate transmission layer that is not configured with an amplitude scaling factor, I represents a spatial basis vector configured with an amplitude scaling factor, and r I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, s I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor.

[0341] Optionally, the first power scaling factor includes a first spatial basis vector, or a power scaling factor corresponding to the first transmission layer, and adjusting the first power scaling factor includes:

[0342] The power scaling factor corresponding to each first spatial basis vector or the power scaling factor corresponding to each first transmission layer is adjusted to Where I represents the spatial basis vector configured with the amplitude scaling factor, r I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, s I represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, Q represents the spatial basis vector excluding the first spatial basis vector in the first candidate basis vector, r q represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vectors excluding the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) in the first candidate basis vector, s q represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vectors excluding the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) in the first candidate basis vectors;

[0343] Alternatively, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or, Where M represents the number of spatial basis vectors other than the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer), r m represents the number of transmission layers corresponding to the mth spatial basis vector among these spatial basis vectors, s m Represents the amplitude scaling factor corresponding to the mth spatial basis vector among these spatial basis vectors.

[0344] In some embodiments, the terminal obtains the first information after adjusting the first power scaling factor, that is, the terminal can obtain the power scaling factor corresponding to each spatial basis vector finally used by the terminal, or the power scaling factor corresponding to each transmission layer.

[0345] In some embodiments, after the terminal adjusts the first power scaling factor, step S2106 is executed.

[0346] Step S2106: The terminal sends second information to the network device.

[0347] In some embodiments, the second information is used to indicate the spatial basis vector or the transmission layer whose power scaling factor is adjusted, and / or the adjusted power scaling factor.

[0348] In some embodiments, the second information includes at least one of the following: the adjusted power scaling factor corresponding to each spatial basis vector; the adjusted power scaling factor corresponding to each transmission layer; the adjusted power scaling factor corresponding to each candidate spatial basis vector; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; the adjusted power scaling factor corresponding to each candidate transmission layer; the first transmission layer; the adjusted power scaling factor corresponding to the first transmission layer.

[0349] In some embodiments, the content included in the second information may be determined according to step S2104 and / or step S2105. For example, if the terminal determines to adjust the power scaling factor corresponding to the candidate spatial basis vector, the second information may include the adjusted power scaling factor corresponding to each candidate spatial basis vector.

[0350] In some embodiments, the second information is used by the network device to determine the first information.

[0351] In some embodiments, the network device receives the second information sent by the terminal. Optionally, in response to receiving the second information sent by the terminal, the network device executes step S2107.

[0352] In some embodiments, the second information may be referred to as "power indication information", "power adjustment information", "power reporting", etc., and the embodiments of the present disclosure do not limit the names thereof.

[0353] Step S2107: The network device determines the first information according to the second information.

[0354] In some embodiments, the network device determines the power scaling factor corresponding to each adjusted spatial basis vector and / or the power scaling factor corresponding to each adjusted transmission layer according to the content indicated by the second information.

[0355] In some embodiments, the network device may determine an initial power scaling factor corresponding to each spatial basis vector and / or each transmission layer based on an amplitude scaling factor corresponding to each spatial basis vector configured for the terminal and the second information.

[0356] In the embodiments of the present disclosure, the power scaling factor is mainly adjusted, and it is easy to understand that adjusting the amplitude scaling factor is equivalent to adjusting the power scaling factor to a certain extent. Therefore, in the embodiments of the present disclosure, the adjustment of the power scaling factor can be replaced by adjusting the amplitude scaling factor, and the adjustment value can be the root mean square of the adjustment value of the power scaling factor.

[0357] For example, if the amplitude scaling factor configured by the network device for a certain spatial basis vector is s, and s is greater than or equal to the root mean square of the first threshold, the amplitude scaling factor s may be adjusted to Or any other adjustment value involved in the above embodiments.

[0358] In some embodiments, after determining the first information, the terminal may calculate a channel quality indicator (CQI) based on the power scaling factors corresponding to each spatial basis vector and / or the power scaling factors corresponding to each transmission layer. Optionally, the terminal reports the CQI to the network device.

[0359] In some embodiments, the names of information, etc. are not limited to the names recorded in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "code element", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0360] In some embodiments, the terms "codebook", "codeword", "precoding matrix" and the like can be interchangeable. For example, a codebook can be a collection of one or more codewords / precoding matrices.

[0361] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be interchangeable, and terms such as "duration", "period", "time window", "window", and "time" can be interchangeable.

[0362] 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.

[0363] In some embodiments, "obtain", "obtain", "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 high levels, obtaining by self-processing, autonomous implementation, etc.

[0364] In some embodiments, terms such as "send", "transmit", "report", "send", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0365] In some embodiments, terms such as "certain", "preset", "preset", "set", "indicated", "some", "any", and "first" can be interchangeable, and "specific A", "preset A", "preset A", "set A", "indicated A", "some A", "any A", and "first A" can be interpreted as A pre-defined in a protocol, etc., or as A obtained through setting, configuration, or indication, etc., and can also be interpreted as specific A, some A, any A, or first A, etc., but is not limited to this.

[0366] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited to this.

[0367] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving the data; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the sent content.

[0368] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2107. For example, step S2104 may be implemented as an independent embodiment, step S2105 may be implemented as an independent embodiment, steps S2101+S2102 may be implemented as an independent embodiment, steps S2103+S2104 may be implemented as an independent embodiment, steps S2101+S2102+S2104 may be implemented as an independent embodiment, and steps S2103+S2104+S2105 may be implemented as an independent embodiment, but are not limited thereto.

[0369] In some embodiments, step S2101 and steps S2103 to S2107 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0370] In some embodiments, steps S2101 to S2104 and steps S2106 to S2107 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0371] In some embodiments, see Figure 2A Other optional implementations recorded before or after the corresponding description.

[0372] Figure 2B FIG. 1 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. Figure 2B As shown, the embodiment of the present disclosure relates to a communication method, and the method includes:

[0373] Step S2201: The network device sends fourth information to the terminal.

[0374] The optional implementation of step S2201 can be found in Figure 2AThe optional implementation method of step S2101 and other related parts of the embodiment involved in Figure 2 are not repeated here.

[0375] Step S2202: The network device determines a power scaling factor corresponding to each spatial basis vector and / or determines a power scaling factor corresponding to each layer according to the fourth information.

[0376] The optional implementation of step S2201 can be found in Figure 2A The optional implementation method of step S2101 and other related parts of the embodiment involved in Figure 2 are not repeated here.

[0377] Step S2203: The terminal sends third information to the network device.

[0378] In some embodiments, the third information is used to determine the first power scaling factor. Optionally, the network device determines the first power scaling factor based on the third information.

[0379] Optionally, the third information is used to indicate at least one of the following: whether to adjust the power scaling factor corresponding to the candidate spatial basis vector; whether to adjust the power scaling factor corresponding to the candidate transmission layer; whether to adjust the power scaling factor corresponding to the first spatial basis vector; whether to adjust the power scaling factor corresponding to the first transmission layer.

[0380] For example, if the third information is used to indicate adjustment of the power scaling factor corresponding to the candidate spatial basis vector, the network device can determine that the first power scaling factor includes the candidate spatial basis vector. If the third information is used to indicate adjustment of the power scaling factor corresponding to the first spatial basis vector, the network device can determine that the first power scaling factor includes the first spatial basis vector.

[0381] In some embodiments, the third information is further used to indicate an adjustment value corresponding to the first power scaling factor. Optionally, the adjustment value may be predefined or determined by the terminal.

[0382] For example, if the third information instructs the network device to adjust the power scaling factor corresponding to the candidate spatial basis vector, the network device can determine that the first power scaling factor includes the power scaling factor corresponding to the candidate spatial basis vector. Furthermore, the network device can also adjust the power scaling factor corresponding to the candidate spatial basis vector to the adjustment value indicated by the third information based on the instruction of the third information.

[0383] In some embodiments, step S2203 is optional, and the network device may determine the first power scaling factor and / or the adjustment value corresponding to the first power scaling factor by itself.

[0384] Step S2204: The network device determines a first power scaling factor.

[0385] In some embodiments, the first power scaling factor includes at least one of:

[0386] A power scaling factor corresponding to the candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold;

[0387] A power scaling factor corresponding to a first spatial basis vector, where the first spatial basis vector is an optimal spatial basis vector among candidate spatial basis vectors;

[0388] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0389] The power scaling factor corresponding to the first transmission layer, the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0390] In some embodiments, the terminal may traverse all candidate spatial basis vectors, and based on the received power, determine the spatial basis vector with the largest received power as the optimal spatial basis vector, and report the optimal spatial basis vector to the network device. Optionally, the terminal may traverse all candidate layers, and based on the received power, determine the transmission layer with the largest received power as the strongest transmission layer, and report the strongest transmission layer to the network device.

[0391] It is worth noting that the embodiments of the present disclosure do not limit the number of candidate spatial basis vectors, first spatial basis vectors, candidate transmission layers, and first transmission layers.

[0392] For example, the number of candidate spatial basis vectors may be one or more. The number of candidate transmission layers may be greater than or equal to the number of candidate spatial basis vectors. For example, multiple candidate transmission layers may use the same candidate spatial basis vector, and the number of transmission layers corresponding to one candidate spatial basis vector may be greater than or equal to 1. The number of first spatial basis vectors or first transmission layers may also be one or more. For example, the receiving power of multiple spatial basis vectors or multiple transmission layers is the same and greater than that of other spatial basis vectors or other transmission layers.

[0393] In some embodiments, the spatial basis vectors used by the first transmission layer may be the first spatial basis vectors, that is, the spatial basis vectors used by the strongest layer in the candidate layers may be the optimal spatial basis vectors.

[0394] In some embodiments, the first threshold may be or, Optionally, the first threshold may also be any other predefined value, and the embodiment of the present disclosure does not limit the value of the first threshold. Wherein, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0395] It can be understood that for each spatial basis vector or each transmission layer, the corresponding first threshold may be different. For example, for a certain spatial basis vector, if only one transmission layer uses the spatial basis vector, the first threshold corresponding to the spatial basis vector and the transmission layer may be If multiple transmission layers use the spatial basis vector, the spatial basis vector and the first threshold corresponding to each transmission layer using the spatial basis vector can be P represents the number of multiple transport layers.

[0396] In some embodiments, the amplitude scaling factor corresponding to the candidate spatial basis vector is greater than or equal to the root mean square of a first threshold. For example, the first threshold is The candidate spatial basis vectors may be the spatial basis vectors used by the network device whose corresponding amplitude scaling factor is less than or equal to The spatial basis vectors of .

[0397] In some embodiments, the candidate spatial basis vectors may also be referred to as unconstrained spatial basis vectors. Optionally, the candidate spatial basis vectors may include spatial basis vectors for which the network side does not configure the corresponding amplitude scaling factor. For example, the first threshold is For spatial basis vectors without amplitude scaling factors, the corresponding power scaling factors can be defaulted to At this time, the spatial basis vector can be determined as a candidate spatial basis vector.

[0398] In some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords used in the MIMO transmission. That is, the network device can adjust the power scaling factor corresponding to the spatial basis vector (or transmission layer) corresponding to all or part of the codewords.

[0399] In other words, multiple (such as 2) codewords can be used for transmission in MIMO transmission (for example, when the transmission rank is greater than 4). When adjusting the power, only the power scaling factor corresponding to the spatial basis vector (or transmission layer) corresponding to the selected one or more codewords (the first codeword) can be adjusted.

[0400] Optionally, the first codeword may be determined by the network device itself, or may be indicated by the terminal, which is not limited in the embodiments of the present disclosure.

[0401] It can be understood that when the candidate spatial basis vector corresponds to the first codeword, the codeword corresponding to the candidate transmission layer also corresponds to the first codeword.

[0402] In some embodiments, the network device may determine the first power scaling factor according to the third information. The optional implementation of the network device determining the first power scaling factor according to the third information may refer to the related part in step S2203, which will not be described in detail here.

[0403] In some embodiments, the network device may determine the first power scaling factor according to a predefined policy.

[0404] For example, if the network device determines in step S2202 that the normalized power corresponding to all spatial basis vectors is not equal to 1, the network device can determine, according to a predefined strategy, that the first power scaling factor includes the candidate spatial basis vector, that is, adjust the power scaling factor corresponding to the candidate spatial basis vector; or, the network device can determine, according to a predefined strategy, that the first power scaling factor includes the first spatial basis vector, that is, adjust the power scaling factor corresponding to the first spatial basis vector.

[0405] In some embodiments, the terminal and the network device may also determine the first power scaling factor by negotiation. Optionally, the terminal and the network device may also determine the adjustment value of the first power scaling factor by negotiation. For example, the terminal and the network device negotiate to determine the power scaling factor corresponding to each adjusted spatial basis vector, and / or the power scaling factor corresponding to each adjusted transmission layer.

[0406] In some embodiments, after the network device determines the first power scaling factor, step S2205 and / or step S2206 is executed.

[0407] Step S2205: The network device adjusts the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0408] In some embodiments, the network device may adjust the first power scaling factor according to the third information. Optionally, the adjustment value corresponding to the first power scaling factor may be determined according to the third information.

[0409] In some embodiments, the network device may also adjust the first power scaling factor according to a predefined policy.

[0410] In some embodiments, the terminal may also adjust the first power scaling factor according to a predefined strategy.

[0411] In some embodiments, after the first power scaling factor is adjusted, at least one of the following is satisfied:

[0412] The sum of the normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0413] The sum of the normalized powers corresponding to all transmission layers after adjustment is less than or equal to 1;

[0414] The adjusted power scaling factor corresponding to each spatial basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0415] Optionally, the sum of normalized powers corresponding to all spatial basis vectors after adjustment is equal to 1. Optionally, the sum of normalized powers corresponding to all transmission layers after adjustment is equal to 1.

[0416] Optionally, if the adjusted power scaling factor of a spatial basis vector is less than or equal to the square of the amplitude scaling factor configured for the spatial basis vector, the adjusted power scaling factor may be further adjusted to be equal to the square of the amplitude scaling factor configured for the spatial basis vector.

[0417] For example, referring to the following optional implementation, if the power scaling factor corresponding to the first spatial basis vector is adjusted to Afterwards, it is found that the corresponding power scaling factor is adjusted to Greater than s 2 , the power scaling factor corresponding to the first spatial basis vector can be adjusted to s 2 , where s represents the amplitude scaling factor configured by the network device for the first spatial basis vector.

[0418] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0419] The first power scaling factor is adjusted, including:

[0420] The power scaling factor corresponding to each candidate spatial basis vector or the power scaling factor corresponding to each candidate transmission layer is adjusted to

[0421] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0422] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0423] It is understandable that the second spatial basis vector may be a spatial basis vector other than the candidate spatial basis vector. Optionally, the amplitude scaling factor corresponding to the second spatial basis vector is less than the root mean square of the first threshold. Optionally, the second spatial basis vector may be referred to as a constrained spatial basis vector.

[0424] That is to say, when adjusting the power scaling factor corresponding to the candidate spatial basis vector or the candidate transmission layer, the sum of the normalized powers corresponding to all candidate spatial basis vectors or all candidate transmission layers can be subtracted from the total power and then averaged to obtain the power scaling factor corresponding to each candidate spatial basis vector or candidate transmission layer. The total power can be the normalized total power, that is, the value of the total power can be 1.

[0425] In some embodiments, the first power scaling factor includes a first spatial basis vector or a first transmission layer corresponding power scaling factor; and adjusting the first power scaling factor includes:

[0426] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0427] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0428] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0429] That is to say, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted from the sum of the normalized powers corresponding to all spatial basis vectors except the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) to obtain the power scaling factor corresponding to the first spatial basis vector (or the first transmission layer).

[0430] Optionally, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer may be adjusted to or, Where M represents the number of spatial basis vectors other than the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer), r m represents the number of transmission layers corresponding to the mth spatial basis vector among these spatial basis vectors, s m Represents the amplitude scaling factor corresponding to the mth spatial basis vector among these spatial basis vectors.

[0431] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0432] The first power scaling factor is adjusted, including:

[0433] Determine that a power scaling factor corresponding to each spatial basis vector or each transmission layer is greater than or equal to a first threshold, and adjust the power scaling factor corresponding to each spatial basis vector or each transmission layer to the first threshold.

[0434] That is to say, when the power scaling factors corresponding to all spatial basis vectors used in MIMO transmission are greater than the first threshold, the power scaling factor corresponding to each spatial basis vector can be determined as the first threshold. Alternatively, when the power scaling factors corresponding to all transmission layers in MIMO transmission are greater than the first threshold, the power scaling factor corresponding to each transmission layer can be determined as the first threshold.

[0435] In some embodiments, the network device may configure amplitude scaling factors for only some of the spatial basis vectors, the candidate spatial basis vectors may include spatial basis vectors that are not configured with amplitude scaling factors, and the candidate transmission layers may include transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors. When adjusting the first power scaling factor, only the spatial basis vectors that are not configured with amplitude scaling factors in the candidate spatial basis vectors may be adjusted, or only the transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors in the candidate transmission layers may be adjusted. Optionally, the first spatial basis vector is the optimal spatial basis vector among the spatial basis vectors that are not configured with amplitude scaling factors, and the first transmission layer is the strongest transmission layer among the transmission layers that use spatial basis vectors that are not configured with amplitude scaling factors.

[0436] Optionally, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer, and adjusting the first power scaling factor includes:

[0437] The power scaling factor corresponding to each first candidate basis vector or the power scaling factor corresponding to each first candidate transmission layer is adjusted to

[0438] Wherein, the first candidate basis vector is a spatial basis vector in the candidate spatial basis vectors that is not configured with an amplitude scaling factor, the first candidate transmission layer is a transmission layer in the candidate transmission layer that uses a spatial basis vector in the candidate transmission layer that is not configured with an amplitude scaling factor, I represents a spatial basis vector configured with an amplitude scaling factor, and r I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, s I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor.

[0439] Optionally, the first power scaling factor includes a first spatial basis vector, or a power scaling factor corresponding to the first transmission layer, and adjusting the first power scaling factor includes:

[0440] The power scaling factor corresponding to each first spatial basis vector or the power scaling factor corresponding to each first transmission layer is adjusted to or, Where I represents the spatial basis vector configured with the amplitude scaling factor, r I Indicates the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, s I represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vector configured with the amplitude scaling factor, Q represents the spatial basis vector excluding the first spatial basis vector in the first candidate basis vector, r q represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vectors excluding the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) in the first candidate basis vector, s q represents the number of transmission layers corresponding to the i-th spatial basis vector in the spatial basis vectors excluding the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer) in the first candidate basis vectors;

[0441] Alternatively, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or, Where M represents the number of spatial basis vectors other than the first spatial basis vector (or the spatial basis vector corresponding to the first transmission layer), r m represents the number of transmission layers corresponding to the mth spatial basis vector among these spatial basis vectors, s m Represents the amplitude scaling factor corresponding to the mth spatial basis vector among these spatial basis vectors.

[0442] In some embodiments, the network device obtains the first information after adjusting the first power scaling factor, that is, the network device can obtain the power scaling factor corresponding to each spatial basis vector it finally uses, or the power scaling factor corresponding to each transmission layer.

[0443] In some embodiments, after the network device adjusts the first power scaling factor, step S2206 is executed.

[0444] Step S2206: The network device sends second information to the terminal.

[0445] In some embodiments, the second information is used to indicate the spatial basis vector or the transmission layer whose power scaling factor is adjusted, and / or the adjusted power scaling factor.

[0446] In some embodiments, the second information includes at least one of the following: the adjusted power scaling factor corresponding to each spatial basis vector; the adjusted power scaling factor corresponding to each transmission layer; the adjusted power scaling factor corresponding to each candidate spatial basis vector; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; the adjusted power scaling factor corresponding to each candidate transmission layer; the first transmission layer; the adjusted power scaling factor corresponding to the first transmission layer.

[0447] In some embodiments, the content included in the second information may be determined according to step S2204 and / or step S2205. For example, if the network device determines to adjust the power scaling factor corresponding to the candidate spatial basis vector, the second information may include the adjusted power scaling factor corresponding to each candidate spatial basis vector.

[0448] In some embodiments, the second information is used by the terminal to determine the first information.

[0449] In some embodiments, the terminal receives the second information sent by the network device. Optionally, in response to receiving the second information sent by the network device, the terminal executes step S2207.

[0450] In some embodiments, the second information may be referred to as "power indication information", "power adjustment information", "power reporting", etc., and the embodiments of the present disclosure do not limit the names thereof.

[0451] In some embodiments, the network device may send the second information through at least one of the following: RRC signaling, MAC-CE or DCI signaling.

[0452] Step S2207: The terminal determines the first information based on the second information.

[0453] In some embodiments, the terminal determines the power scaling factor corresponding to each adjusted spatial basis vector and / or the power scaling factor corresponding to each adjusted transmission layer according to the content indicated by the second information.

[0454] In some embodiments, the terminal may determine a power scaling factor corresponding to each spatial basis vector and / or each transmission layer based on an amplitude scaling factor corresponding to each spatial basis vector configured for the terminal by a network device and second information.

[0455] In the embodiments of the present disclosure, the power scaling factor is mainly adjusted, and it is easy to understand that adjusting the amplitude scaling factor is equivalent to adjusting the power scaling factor to a certain extent. Therefore, in the embodiments of the present disclosure, the adjustment of the power scaling factor can be replaced by adjusting the amplitude scaling factor, and the adjustment value can be the root mean square of the adjustment value of the power scaling factor.

[0456] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2201 to S2207. For example, step S2204 may be implemented as an independent embodiment, step S2205 may be implemented as an independent embodiment, steps S2201+S2202 may be implemented as an independent embodiment, steps S2203+S2204 may be implemented as an independent embodiment, steps S2201+S2202+S2204 may be implemented as an independent embodiment, and steps S2203+S2204+S2205 may be implemented as an independent embodiment, but are not limited thereto.

[0457] In some embodiments, step S2201 and steps S2203 to S2207 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0458] In some embodiments, steps S2201 to S2204 and steps S2206 to S2207 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0459] In some embodiments, see Figure 2B Other optional implementations recorded before or after the corresponding description.

[0460] Figure 3A FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3A As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0461] Step S3101, obtain the fourth information.

[0462] The optional implementation of step S3101 can be found in Figure 2A Optional implementations of step S2101, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0463] Step S3102: Determine, based on the fourth information, a power scaling factor corresponding to each spatial basis vector, and / or determine a power scaling factor corresponding to each transmission layer.

[0464] The optional implementation of step S3102 can be found in Figure 2A Optional implementations of step S2102, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0465] Step S3103, obtaining third information.

[0466] The optional implementation of step S3103 can be found in Figure 2A Optional implementations of step S2103, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0467] Step S3104, determine a first power scaling factor.

[0468] The optional implementation of step S3104 can be found in Figure 2A Optional implementations of step S2104, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0469] Step S3105: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0470] The optional implementation of step S3105 can be found in Figure 2A Optional implementations of step S2105, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0471] Step S3106, sending the second information.

[0472] The optional implementation of step S3106 can be found in Figure 2A Optional implementations of step S2106, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0473] In some embodiments, the second information may be used by the network device to determine the first information.

[0474] The communication method involved in the embodiments of the present disclosure may include at least one of steps S3101 to S3106. For example, step S3104 may be implemented as an independent embodiment, step S3105 may be implemented as an independent embodiment, steps S3101+S3102 may be implemented as an independent embodiment, steps S3103+S3104 may be implemented as an independent embodiment, steps S3101+S3102+S3104 may be implemented as an independent embodiment, and steps S3103+S3104+S3105 may be implemented as an independent embodiment, but are not limited thereto.

[0475] In some embodiments, step S3101 and steps S3103 to S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0476] In some embodiments, steps S3101 to S3104 and step S3106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0477] Figure 3B FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3B As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0478] Step S3201, obtain the fourth information.

[0479] The optional implementation of step S3201 can be found in Figure 2A Step S2101, Figure 3A Optional implementations of step S3101, and Figure 2A , Figure 2B , Figure 3A Other related parts in the embodiments involved will not be described in detail here.

[0480] Step S3202: Determine, based on the fourth information, a power scaling factor corresponding to each spatial basis vector, and / or determine a power scaling factor corresponding to each transmission layer.

[0481] The optional implementation of step S3202 can be found in Figure 2A Step S2102, Figure 3A Optional implementations of step S3102, and Figure 2A , Figure 2B , Figure 3A Other related parts in the embodiments involved will not be described in detail here.

[0482] It can be understood that the terminal can directly determine the first information based on the fourth information when determining that there is no need to adjust the power scaling factor.

[0483] Figure 3C FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3C As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0484] Step S3301, obtaining third information.

[0485] The optional implementation of step S3301 can be found in Figure 2A Step S2103, Figure 3AOptional implementations of step S3103, and Figure 2A , Figure 2B , Figure 3A , Figure 3B Other related parts in the embodiments involved will not be described in detail here.

[0486] Step S3302: determine a first power scaling factor.

[0487] The optional implementation of step S3302 can be found in Figure 2A Step S2104, Figure 3A Optional implementations of step S3104, and Figure 2A , Figure 2B , Figure 3A , Figure 3B Other related parts in the embodiments involved will not be described in detail here.

[0488] Step S3303: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0489] The optional implementation of step S3303 can be found in Figure 2A Step S2105, Figure 3A Optional implementations of step S3105, and Figure 2A , Figure 2B , Figure 3A , Figure 3B Other related parts in the embodiments involved will not be described in detail here.

[0490] In some embodiments, steps S3301 to S3302 may also be combined with Figure 3A Steps S3101 to S3102 and / or step S3106 are combined.

[0491] Figure 3D FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3D As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0492] Step S3401, determine a first power scaling factor.

[0493] The optional implementation of step S3401 can be found in Figure 2A Step S2104, Figure 3A Optional implementations of step S3104, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3COther related parts in the embodiments involved will not be described in detail here.

[0494] Step S3402: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0495] The optional implementation of step S3402 can be found in Figure 2A Step S2105, Figure 3A Optional implementations of step S3105, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C Other related parts in the embodiments involved will not be described in detail here.

[0496] In some embodiments, steps S3401 to S3402 may also be combined with Figure 3A Steps S3101 to S3102 and / or step S3106 are combined.

[0497] Figure 3E FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3E As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0498] Step S3501: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0499] The optional implementation of step S3501 can be found in Figure 2A Step S2105, Figure 3A Optional implementations of step S3105, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C , Figure 3D Other related parts in the embodiments involved will not be described in detail here.

[0500] Step S3502, sending the second information.

[0501] The optional implementation of step S3502 can be found in Figure 2A Step S2106, Figure 3A Optional implementations of step S3106, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C , Figure 3D Other related parts in the embodiments involved will not be described in detail here.

[0502] Figure 3F FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3F As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0503] Step S3601, obtaining second information.

[0504] The optional implementation of step S3601 can be found in Figure 2B Optional implementations of step S2106, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C , Figure 3D , Figure 3E Other related parts in the embodiments involved will not be described in detail here.

[0505] Step S3602, determine the first information based on the second information.

[0506] The optional implementation of step S3602 can be found in Figure 2B Optional implementations of step S2107, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C , Figure 3D , Figure 3E Other related parts in the embodiments involved will not be described in detail here.

[0507] In some embodiments, the method for determining the content included in the second information in step S3601 can refer to Figure 2B An optional implementation method of steps S2203 to S2205.

[0508] Figure 3G FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 3G As shown, the embodiment of the present disclosure relates to a communication method (terminal side), and the method includes:

[0509] Step S3701, determine the first information.

[0510] Optional implementation of step S3701 Figure 2A Steps S2101 to S2102 or steps S2101 to S2105, Figure 2B Step S2107, Figure 3ASteps S3101 to S3102 or steps S3101 to S3105, Figure 3F Optional implementations of step S3602, and Figure 2A , Figure 2B , Figure 3A , Figure 3B , Figure 3C , Figure 3D , Figure 3E , Figure 3F Other related parts in the embodiments involved will not be described in detail here.

[0511] In some embodiments, the first information includes at least one of the following:

[0512] The power scaling factor corresponding to each spatial basis vector;

[0513] Power scaling factor for each transport layer.

[0514] Optionally, each transmission layer corresponds to a data stream in MIMO transmission. Optionally, the spatial basis vectors are used for beamforming in MIMO transmission.

[0515] In some embodiments, each spatial basis vector is configured with an amplitude scaling factor, and determining the first information includes:

[0516] Determine a power scaling factor corresponding to each spatial basis vector according to the amplitude scaling factor corresponding to each spatial basis vector; and / or,

[0517] According to the amplitude scaling factor corresponding to each spatial basis vector, a power scaling factor corresponding to each transmission layer is determined.

[0518] In some embodiments, determining the first information includes:

[0519] Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer;

[0520] After the first power scaling factor is adjusted, at least one of the following is satisfied:

[0521] The sum of the normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0522] The sum of the normalized powers corresponding to all transmission layers after adjustment is less than or equal to 1;

[0523] The adjusted power scaling factor corresponding to each spatial basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0524] In some embodiments, the first power scaling factor includes at least one of:

[0525] A power scaling factor corresponding to the candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold;

[0526] A power scaling factor corresponding to a first spatial basis vector, where the first spatial basis vector is an optimal spatial basis vector among candidate spatial basis vectors;

[0527] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0528] The power scaling factor corresponding to the first transmission layer, the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0529] In some embodiments, the first threshold is any one of the following: or 1;

[0530] Among them, v represents the rank corresponding to MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0531] In some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords among codewords adopted for MIMO transmission.

[0532] In some embodiments, the method further comprises:

[0533] Sending second information to the network device, the second information including at least one of the following:

[0534] The power scaling factor corresponding to each spatial basis vector after adjustment;

[0535] The adjusted power scaling factor corresponding to each transmission layer;

[0536] The power scaling factor corresponding to each candidate spatial basis vector after adjustment;

[0537] The first spatial basis vector;

[0538] The power scaling factor corresponding to the adjusted first spatial basis vector;

[0539] The adjusted power scaling factor corresponding to each candidate transmission layer;

[0540] First transport layer;

[0541] The power scaling factor corresponding to the first transmission layer after adjustment.

[0542] In some embodiments, the method comprises:

[0543] receiving third information sent by the network device;

[0544] Determining a first power scaling factor according to the third information;

[0545] The third information is used to indicate at least one of the following:

[0546] Whether to adjust the power scaling factor corresponding to the candidate spatial basis vectors;

[0547] Whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0548] Whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0549] Whether to adjust the power scaling factor corresponding to the first transmission layer.

[0550] In some embodiments, the method comprises:

[0551] A first power scaling factor is determined by negotiation with the network device.

[0552] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0553] The first power scaling factor is adjusted, including:

[0554] The power scaling factor corresponding to each candidate spatial basis vector or the power scaling factor corresponding to each candidate transmission layer is adjusted to

[0555] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0556] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0557] In some embodiments, the first power scaling factor comprises a first spatial basis vector or a first transmission layer corresponding power scaling factor;

[0558] The first power scaling factor is adjusted, including:

[0559] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0560] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, sn represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0561] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0562] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0563] The first power scaling factor is adjusted, including:

[0564] Determine that a power scaling factor corresponding to each spatial basis vector or each transmission layer is greater than or equal to a first threshold, and adjust the power scaling factor corresponding to each spatial basis vector or each transmission layer to the first threshold.

[0565] In some embodiments, determining the first information includes:

[0566] receiving second information sent by the network device;

[0567] determining the first information based on the second information;

[0568] The second information includes at least one of the following:

[0569] The power scaling factor corresponding to each spatial basis vector after adjustment;

[0570] The adjusted power scaling factor corresponding to each transmission layer;

[0571] The power scaling factor corresponding to each candidate spatial basis vector after adjustment;

[0572] The first spatial basis vector;

[0573] The power scaling factor corresponding to the adjusted first spatial basis vector;

[0574] The adjusted power scaling factor corresponding to each candidate transmission layer;

[0575] First transport layer;

[0576] The power scaling factor corresponding to the first transmission layer after adjustment.

[0577] Figure 4A FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4AAs shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0578] Step S4101, sending the fourth information.

[0579] The optional implementation of step S4101 can be found in Figure 2B Optional implementations of step S2201, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0580] Step S4102: Determine, based on the fourth information, a power scaling factor corresponding to each spatial basis vector, and / or determine a power scaling factor corresponding to each transmission layer.

[0581] The optional implementation of step S4102 can be found in Figure 2B Optional implementations of step S2202, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0582] Step S4103, obtaining third information.

[0583] The optional implementation of step S4103 can be found in Figure 2B Optional implementations of step S2203, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0584] Step S4104, determine a first power scaling factor.

[0585] The optional implementation of step S4104 can be found in Figure 2B Optional implementations of step S2204, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0586] Step S4105: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0587] The optional implementation of step S4105 can be found in Figure 2B Optional implementations of step S2205, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0588] Step S4106, sending the second information.

[0589] The optional implementation of step S4106 can be found in Figure 2B Optional implementations of step S2206, and Figure 2A , Figure 2B Other related parts in the embodiments involved will not be described in detail here.

[0590] In some embodiments, the second information may be used by the terminal to determine the first information.

[0591] The communication method involved in the embodiments of the present disclosure may include at least one of steps S4101 to S4106. For example, step S4104 may be implemented as an independent embodiment, step S4105 may be implemented as an independent embodiment, steps S4101+S4102 may be implemented as an independent embodiment, steps S4103+S4104 may be implemented as an independent embodiment, steps S4101+S4102+S4104 may be implemented as an independent embodiment, and steps S4103+S4104+S4105 may be implemented as an independent embodiment, but are not limited thereto.

[0592] In some embodiments, step S4101 and steps S4103 to S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0593] In some embodiments, steps S4101 to S4104 and step S4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0594] Figure 4B FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4B As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0595] Step S4201, sending the fourth information.

[0596] The optional implementation of step S4201 can be found in Figure 2B Step S2201, Figure 4A Optional implementations of step S4101, and Figure 2A , Figure 2B , Figure 4A Other related parts in the embodiments involved will not be described in detail here.

[0597] Step S4202: Determine, based on the fourth information, a power scaling factor corresponding to each spatial basis vector and / or determine a power scaling factor corresponding to each transmission layer.

[0598] The optional implementation of step S4202 can be found in Figure 2B Step S2202, Figure 4A Optional implementations of step S4102, and Figure 2A , Figure 2B , Figure 4A Other related parts in the embodiments involved will not be described in detail here.

[0599] It is understandable that the network device may determine the first information directly based on the fourth information when determining that there is no need to adjust the power scaling factor.

[0600] Figure 4C FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4C As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0601] Step S4301, obtaining third information.

[0602] The optional implementation of step S4301 can be found in Figure 2B Step S2203, Figure 4A Optional implementations of step S4103, and Figure 2A , Figure 2B , Figure 4A , Figure 4B Other related parts in the embodiments involved will not be described in detail here.

[0603] Step S4302: determine a first power scaling factor.

[0604] The optional implementation of step S4302 can be found in Figure 2B Step S2204, Figure 4A Optional implementations of step S4104, and Figure 2A , Figure 2B , Figure 4A , Figure 4B Other related parts in the embodiments involved will not be described in detail here.

[0605] Step S4304: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0606] The optional implementation of step S4304 can be found in Figure 2B Step S2205, Figure 4A Optional implementations of step S4105, and Figure 2A , Figure 2B , Figure 4A , Figure 4BOther related parts in the embodiments involved will not be described in detail here.

[0607] In some embodiments, steps S4301 to S4302 may also be combined with Figure 4A Steps S4101 to S4102 and / or step S4106 are combined.

[0608] Figure 4D FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4D As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0609] Step S4401, determine a first power scaling factor.

[0610] The optional implementation of step S4401 can be found in Figure 2B Step S2204, Figure 4A Optional implementations of step S4104, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C Other related parts in the embodiments involved will not be described in detail here.

[0611] Step S4402: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0612] The optional implementation of step S4402 can be found in Figure 2B Step S2205, Figure 4A Optional implementations of step S4105, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C Other related parts in the embodiments involved will not be described in detail here.

[0613] In some embodiments, steps S4401 to S4402 may also be combined with Figure 4A Steps S4101 to S4102 and / or step S4106 are combined.

[0614] Figure 4E FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4E As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0615] Step S4501: adjust the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer.

[0616] The optional implementation of step S4501 can be found in Figure 2B Step S2205, Figure 4A Optional implementations of step S4105, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C , Figure 4D Other related parts in the embodiments involved will not be described in detail here.

[0617] Step S4502, sending the second information.

[0618] The optional implementation of step S4502 can be found in Figure 2B Step S2206, Figure 4A Optional implementations of step S4106, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C , Figure 4D Other related parts in the embodiments involved will not be described in detail here.

[0619] Figure 4F FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4F As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0620] Step S4601, obtaining second information.

[0621] The optional implementation of step S4601 can be found in Figure 2A Optional implementations of step S2106, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C , Figure 4D , Figure 4E Other related parts in the embodiments involved will not be described in detail here.

[0622] Step S4602, determine the first information based on the second information.

[0623] The optional implementation of step S4602 can be found in Figure 2A Optional implementations of step S2107, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C , Figure 4D , Figure 4E Other related parts in the embodiments involved will not be described in detail here.

[0624] In some embodiments, the method for determining the content included in the second information in step S4601 can refer to Figure 2A An optional implementation method of steps S2103 to S2105.

[0625] Figure 4G FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 4G As shown, the embodiment of the present disclosure relates to a communication method (network device side), and the method includes:

[0626] Step S4701, determine the first information.

[0627] Optional implementation of step S4701 Figure 2B Steps S2201 to S2202 or steps S2201 to S2205, Figure 2A Step S2107, Figure 4A Steps S4101 to S4102 or steps S4101 to S4105, Figure 4F Optional implementations of step S4602, and Figure 2A , Figure 2B , Figure 4A , Figure 4B , Figure 4C , Figure 4D , Figure 4E , Figure 4F Other related parts in the embodiments involved will not be described in detail here.

[0628] In some embodiments, first information is determined, the first information comprising at least one of the following:

[0629] The power scaling factor corresponding to each spatial basis vector, which is used for beamforming in MIMO transmission;

[0630] A power scaling factor corresponding to each transmission layer, each transmission layer corresponds to a data stream in MIMO transmission.

[0631] In some embodiments, the method comprises:

[0632] Sending fourth information, where the fourth information is used to indicate an amplitude scaling factor corresponding to each spatial basis vector;

[0633] The amplitude scaling factor is used to determine a power scaling factor corresponding to each spatial basis vector and / or to determine a power scaling factor corresponding to each transmission layer.

[0634] In some embodiments, determining the first information includes:

[0635] Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial basis vector and / or an adjusted power scaling factor corresponding to each transmission layer;

[0636] After the first power scaling factor is adjusted, at least one of the following is satisfied:

[0637] The sum of the normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0638] The sum of the normalized powers corresponding to all transmission layers after adjustment is less than or equal to 1;

[0639] The adjusted power scaling factor corresponding to each spatial basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0640] In some embodiments, the first power scaling factor includes at least one of:

[0641] A power scaling factor corresponding to the candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold;

[0642] A power scaling factor corresponding to a first spatial basis vector, where the first spatial basis vector is an optimal spatial basis vector among candidate spatial basis vectors;

[0643] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0644] The power scaling factor corresponding to the first transmission layer, the first transmission layer is the strongest transmission layer among the candidate transmission layers.

[0645] In some embodiments, the first threshold is any one of the following: or 1;

[0646] Among them, v represents the rank corresponding to MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0647] In some embodiments, the candidate spatial basis vector corresponds to a first codeword, and the first codeword is one or more codewords among codewords adopted for MIMO transmission.

[0648] In some embodiments, the method further comprises:

[0649] Sending second information to the terminal, where the second information includes at least one of the following:

[0650] The power scaling factor corresponding to each spatial basis vector after adjustment;

[0651] The adjusted power scaling factor corresponding to each transmission layer;

[0652] The power scaling factor corresponding to each candidate spatial basis vector after adjustment;

[0653] The first spatial basis vector;

[0654] The power scaling factor corresponding to the adjusted first spatial basis vector;

[0655] The adjusted power scaling factor corresponding to each candidate transmission layer;

[0656] First transport layer;

[0657] The power scaling factor corresponding to the first transmission layer after adjustment.

[0658] In some embodiments, the method comprises:

[0659] receiving third information sent by the terminal;

[0660] Determining a first power scaling factor according to the third information;

[0661] The third information is used to indicate at least one of the following:

[0662] Whether to adjust the power scaling factor corresponding to the candidate spatial basis vectors;

[0663] Whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0664] Whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0665] Whether to adjust the power scaling factor corresponding to the first transmission layer.

[0666] In some embodiments, the method comprises:

[0667] A first power scaling factor is determined by negotiation with the terminal.

[0668] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0669] The first power scaling factor is adjusted, including:

[0670] The power scaling factor corresponding to each candidate spatial basis vector or the power scaling factor corresponding to each candidate transmission layer is adjusted to

[0671] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector;

[0672] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0673] In some embodiments, the first power scaling factor comprises a first spatial basis vector or a first transmission layer corresponding power scaling factor;

[0674] The first power scaling factor is adjusted, including:

[0675] The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or,

[0676] Where N represents the number of second spatial basis vectors, r n Indicates the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1;

[0677] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

[0678] In some embodiments, the first power scaling factor includes a candidate spatial basis vector, or a power scaling factor corresponding to a candidate transmission layer;

[0679] The first power scaling factor is adjusted, including:

[0680] Determine that a power scaling factor corresponding to each spatial basis vector or each transmission layer is greater than or equal to a first threshold, and adjust the power scaling factor corresponding to each spatial basis vector or each transmission layer to the first threshold.

[0681] In some embodiments, determining the first information includes:

[0682] receiving second information sent by the terminal;

[0683] determining the first information based on the second information;

[0684] The second information includes at least one of the following:

[0685] The power scaling factor corresponding to each spatial basis vector after adjustment;

[0686] The adjusted power scaling factor corresponding to each transmission layer;

[0687] The power scaling factor corresponding to each candidate spatial basis vector after adjustment;

[0688] The first spatial basis vector;

[0689] The power scaling factor corresponding to the adjusted first spatial basis vector;

[0690] The adjusted power scaling factor corresponding to each candidate transmission layer;

[0691] First transport layer;

[0692] The power scaling factor corresponding to the first transmission layer after adjustment.

[0693] Figure 5 FIG. 1 is a flow chart of a communication method according to an embodiment of the present disclosure. Figure 5 As shown, the embodiment of the present disclosure relates to a communication method, and the method includes:

[0694] In step S5101, the UE and / or gNB adjusts the power scaling factor corresponding to the unconstrained spatial basis vector.

[0695] In some embodiments, the power scaling factor configured by the gNB for the i-th SD basis vector The total power is normalized to 1.

[0696] In some embodiments, the UE reports an indication message to the gNB indicating the power scaling factor corresponding to each SD basis vector or each layer without constraints.

[0697] Optionally, the UE adjusts the power scaling factor corresponding to the strongest layer or the best SD basis vectors. In addition to indicating the power scaling factor, the UE also indicates the strongest layer or the best SD basis vector. The best SD basis vectors refers to the SD basis vector corresponding to the maximum received power after traversing all candidate unconstrained SD basis vectors.

[0698] Optionally, the UE adjusts the power scaling factor corresponding to each SD basis vector, the UE determines the power scaling factor of each SD basis vector and indicates the power scaling factor to the gNB.

[0699] In some embodiments, the gNB sends an indication message to the UE to indicate whether to adjust the power scaling factor corresponding to each SD basis vector or each layer.

[0700] Optionally, if it is indicated to adjust the power scaling factor corresponding to each SD basis vector or each layer, it is indicated to adjust the power scaling factor corresponding to the strongest layer or the optimal SD basis vector, or to adjust the power scaling factor corresponding to each SD basis vector.

[0701] In some embodiments, the power scaling factor corresponding to each beam or each layer is predefined based on negotiation between the UE and the gNB.

[0702] Optionally, the adjustment power scaling factor corresponding to the strongest layer or the optimal SD basis vector is predefined, or the adjustment power scaling factor corresponding to each unconstrained SD basis vector is predefined.

[0703] In some embodiments, the power scaling factor of each layer can be determined based on one or more of UE reporting indication, network signaling indication or negotiated predefinition.

[0704] In some embodiments, the gNB configures an amplitude scaling factor for each SD basis vector selected by the UE and may determine the power corresponding to each SD basis vector or each layer according to the following definition method:

[0705] Method 1: The power scaling factor for each SD basis vector or each layer is determined by the amplitude scaling factor of the corresponding SDbasisvector configured by the gNB. That is, no power adjustment is performed.

[0706] Method 2: If the sum of the powers corresponding to each configured SD basis vector is greater than the total power 1, the configured power is less than The SD basis vector is adjusted, and the power of the configuration is greater than The power corresponding to the SD basis vector is adjusted.

[0707] The rate value is or or If the SD basisvector corresponds to layer X, then the power adjustment value is or or That is, the power corresponding to the constrained SD basis vectors is subtracted from the total power, and then the power corresponding to the unconstrained SD basis vectors is averaged.

[0708] In some embodiments, the adjusted power scaling factor corresponding to the strongest layer or the optimal SDbasis vector can be adjusted to or, That is, the total power minus the power of the other transmission layers or SDbasis vectors of the strongest layer or optimal SDbasis vector constrained.

[0709] The meaning of each parameter in the above formula can be found in Figure 2A or Figure 2B The description in is not repeated here.

[0710] It can be understood that in the above embodiments, only the power adjustment is described accordingly. If the amplitude is adjusted, the corresponding amplitude scaling factor is the root mean square of the power scaling factor.

[0711] The present disclosure also provides the following exemplary embodiments.

[0712] In Example 1, assuming that the number of antenna ports configured by the gNB is N1=8 and N2=4, the number of spatial basis vectors (SD basis vectors) available for selection by the UE is N1*N2*O1*O2=512, where O1 and O2 are equal to 4, respectively representing the over-adoption factors of the horizontal and vertical SD basis vectors. The gNB also configures X1=4 and X2=2 for amplitude constraints on each group of X1*X2=8 SD basis vectors, and configures 3 bits for each group of SD basis vectors to indicate the amplitude constraint factor of the corresponding group. X1 and X2 represent the number of SD basis vectors in the horizontal and vertical dimensions, respectively. When the amplitude value indicated by the configured 3 bits is 1, it indicates that the group of SD basis vectors is not constrained.

[0713] Assume v = 3, the first and third layers use the same SD basis vectors, denoted as the first SD basis vector, and the SD basis vectors used by the second layer are denoted as the second SD basis vector. Assume that the two SD basis vectors selected by the UE come from different SD basis vector groups, and the first SD basis vector is configured with an amplitude constraint of The sum of the powers corresponding to the first and third layers is 1 / 2, so the power scaling factor corresponding to the second layer can be adjusted to 1-1 / 2=1 / 2. If not adjusted, the power corresponding to the second layer is only 1 / 3. After adjustment, the transmission power corresponding to the second layer will be increased, which can improve the system transmission performance.

[0714] In some embodiments, the UE may calculate a Channel Quality Indicator (CQI) based on the adjusted power or the unadjusted power. In order to ensure that the UE and the gNB perform power adjustment in a consistent manner, the gNB may determine whether to perform power adjustment through Radio Resource Control (RRC) signaling, Media Access Control-Control Element (MAC-CE) or Downlink Control Information (DCI) signaling indication or UE reporting or by consensus between the UE and the gNB. If power adjustment is performed, the adjustment is performed in the same manner as described above to ensure consistency in the power adjustment performed by the UE and the gNB. If the UE calculates the CQI after adjusting the power as described above, the gNB also needs to perform the same power adjustment.

[0715] Assuming v = 5, the codebook structure is as follows:

[0716]

[0717] Referring to the above formula, the first and second layers use the same SDbasis vectors and are recorded as the first SD basis vector, the third and fourth layers use the same SDbasis vectors and are recorded as the second SD basis vector, and the fifth layer uses the same SDbasis vectors and is recorded as the third SD basis vector. Assume that these three SD basis vectors come from three SD basis vector groups, where the first SD basis vector and the third SD basis vector are not constrained, such as the amplitude scaling factor is 1, and the amplitude scaling factors of the second SD basis vector are respectively Assuming that the first SD basis vector is the optimal SD basis vector, if only the scaling factor of the transmission power corresponding to the first SD basis vector is adjusted, and the transmission layer power scaling factor corresponding to the third SD basis vector is 1 / 5, then the remaining power except the first SD basis vector is Since the first SD basis vector corresponds to two layers, the transmission power scaling factor of each layer is

[0718] It is worth noting that the power scaling factor corresponding to each SD basis vector can be used to constrain the total power corresponding to the SD basis vector. Since the second SD basis vector corresponds to two transmission layers, the power of these two transmission layers is 1 / 2 of the corresponding power scaling factor, that is, 1 / 16. Correspondingly, the power of the two transmission layers corresponding to the first SDbasis vector is 27 / 80.

[0719] If the remaining power is all allocated to the strongest layer, the first layer can be set as the strongest layer, and the power of the second layer is configured as 1 / 5, then the remaining power can be allocated to the strongest layer. As a power scaling factor for the strongest layer, i.e. the first layer.

[0720] In Example 2, assuming the same conditions as Example 1, let v=3. If the two SD basis vectors selected by the UE belong to two SD basis vector groups, and the power scaling factors configured by the gNB are 1 / 8 and 1 / 4 respectively, since the corresponding powers are both less than 1 / 3. In order to obtain better beam constraints and avoid interference to other wireless systems, no power adjustment is required in this case. If the gNB configures the power scaling factors of the above two SD basis vectors to be 1 and 1 / 4 respectively, since the first SD basis vector corresponds to two layers, the total power is 1 / 2+1 / 2+1 / 4>1. Since 1>1 / 3, in this case, the power of the two transmission layers corresponding to the first SD basis vector can be adjusted, that is, the remaining 1-1 / 4=3 / 4 of the power is evenly divided into the two layers, and the power adjustment factors corresponding to the two layers are 3 / 8, and the power scaling factor corresponding to the first SD basis vector is 3 / 4. Furthermore, if the power limit for each layer does not exceed 1 / 3, since 3 / 8>1 / 3, the power scaling factor corresponding to the SD basis vector can be further adjusted to 1 / 3, and the power scaling factor corresponding to each layer can be adjusted to 1 / 6.

[0721] The above is to adjust the power of each layer according to a certain agreed method. Correspondingly, the gNB will also adopt the corresponding power transmission corresponding to the layer. The power scaling factor of each layer can also be determined by the UE and then reported separately to the gNB. Or the gNB independently determines the power scaling factor of each layer and notifies the UE through RRC / MAC-CE / DCI signaling. The UE calculates the RI / CQI based on the indicated power scaling factor. Optionally, the scaling factor of each layer is jointly determined according to one or more methods reported by the UE, signaled by the gNB, or predefined in the negotiation.

[0722] In the embodiments of the present disclosure, part or all of the steps and their optional implementations may be arbitrarily combined with part or all of the steps in other embodiments, or may be arbitrarily combined with optional implementations of other embodiments.

[0723] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device is proposed, the above device includes a unit or module for implementing each step performed by the terminal in any of the above methods. For another example, another device is also proposed, including a unit or module for implementing each step performed by a network device (such as an access network device, a core network function node, a core network device, etc.) in any of the above methods.

[0724] It should be understood that the division of the units or modules in the above device is only a division of logical functions, and in actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. In addition, the units or modules in the device can 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 instructions are stored in the memory. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the 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 inside 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 hardware circuits can be understood as one or more processors; for example, in one implementation, the above 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 hardware circuit can be realized by a programmable logic device (PLD), taking a field programmable gate array (FPGA) as an example, which can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to realize 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 a processor calling software, or in the form of a hardware circuit, or in part by a processor calling software, and the rest by a hardware circuit.

[0725] In the disclosed embodiment, the processor is a circuit with signal processing capability. In one implementation, the processor may be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which may be understood as a microprocessor), or a digital signal processor (DSP), etc.; in another implementation, the processor may realize certain functions through the logical relationship of the hardware circuit, and the logical relationship of the above hardware circuit is fixed or reconfigurable, such as a hardware circuit implemented by a processor as 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 and realizing the configuration of the hardware circuit may be understood as the process of the processor loading instructions to realize the functions of some or all of the above units or modules. In addition, it may also be a hardware circuit designed for artificial intelligence, which may be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0726] Fig. 6A Schematic diagram of the structure of the terminal proposed in the embodiment of the present disclosure. Fig. 6A As shown, the terminal 6100 may include: at least one of a transceiver module 6101, a processing module 6102, etc. In some embodiments, the processing module 6102 is used to determine first information, and the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector, the spatial basis vector is used for beamforming in MIMO transmission; a power scaling factor corresponding to each transmission layer, each transmission layer corresponds to a data stream in MIMO transmission. Optionally, the above-mentioned transceiver module 6101 is used to execute at least one of the communication steps such as sending and / or receiving executed by the terminal in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module 6102 is used to execute at least one of the other steps executed by the terminal in any of the above methods, which will not be repeated here.

[0727] Figure 6B Schematic diagram of the structure of the network device proposed in the embodiment of the present disclosure. Figure 6BAs shown, the network device 6200 may include: at least one of a transceiver module 6201, a processing module 6202, etc. In some embodiments, the processing module 6202 is used to determine first information, and the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector, the spatial basis vector is used for beamforming in MIMO transmission; a power scaling factor corresponding to each transmission layer, each transmission layer corresponds to a data stream in MIMO transmission. Optionally, the above-mentioned transceiver module 6201 is used to execute at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be repeated here. Optionally, the above-mentioned processing module 6202 is used to execute at least one of the other steps performed by the network device in any of the above methods, which will not be repeated here.

[0728] In some embodiments, the transceiver module may include a sending module and / or a receiving module, and the sending module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0729] In some embodiments, the processing module can be a module or include multiple submodules. Optionally, the multiple submodules respectively execute all or part of the steps required to be executed by the processing module. Optionally, the processing module can be replaced with the processor.

[0730] Fig. 7A 7100 is a schematic diagram of the structure of the communication device 7100 proposed in the embodiment of the present disclosure. The communication device 7100 can be a network device (such as an access network device, a core network device, etc.), or a terminal (such as a user device, etc.), or a chip, a chip system, or a processor that supports the network device to implement any of the above methods, or a chip, a chip system, or a processor that supports the terminal to implement any of the above methods. The communication device 7100 can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

[0731] like Fig. 7A As shown, the communication device 7100 includes one or more processors 7101. The processor 7101 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 the 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 the program, and process the data of the program. Optionally, the communication device 7100 is used to execute any of the above methods. Optionally, one or more processors 7101 are used to call instructions so that the communication device 7100 executes any of the above methods.

[0732] In some embodiments, the communication device 7100 further includes one or more transceivers 7102. When the communication device 7100 includes one or more transceivers 7102, the transceiver 7102 performs at least one of the communication steps such as sending and / or receiving in the above method, and the processor 7101 performs at least one of the other steps. In an optional embodiment, the transceiver may include a receiver and / or a transmitter, and the receiver and the transmitter may be separated or integrated. Optionally, the terms such as transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc. may be replaced with each other, the terms such as transmitter, transmission unit, transmitter, transmission circuit, etc. may be replaced with each other, and the terms such as receiver, receiving unit, receiver, receiving circuit, etc. may be replaced with each other.

[0733] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Optionally, all or part of the memories 7103 may also be outside the communication device 7100. In an optional embodiment, the communication device 7100 may include one or more interface circuits 7104. Optionally, the interface circuit 7104 is connected to the memory 7102, and the interface circuit 7104 may be used to receive data from the memory 7102 or other devices, and may be used to send data to the memory 7102 or other devices. For example, the interface circuit 7104 may read the data stored in the memory 7102 and send the data to the processor 7101.

[0734] The communication device 7100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 7100 described in the present disclosure is not limited thereto, and the structure of the communication device 7100 may not be limited thereto. Fig. 7A 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 and 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, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0735] Figure 7B 7200 is a schematic diagram of the structure of the chip 7200 proposed in the embodiment of the present disclosure. For the case where the communication device 7100 can be a chip or a chip system, please refer to Figure 7B The structure diagram of the chip 7200 is shown, but is not limited to this.

[0736] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0737] In some embodiments, the chip 7200 further includes one or more interface circuits 7202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be interchangeable. In some embodiments, the chip 7200 further includes one or more memories 7203 for storing data. Optionally, all or part of the memory 7203 can be outside the chip 7200. Optionally, the interface circuit 7202 is connected to the memory 7203, and the interface circuit 7202 can be used to receive data from the memory 7203 or other devices, and the interface circuit 7202 can be used to send data to the memory 7203 or other devices. For example, the interface circuit 7202 can read the data stored in the memory 7203 and send the data to the processor 7201.

[0738] In some embodiments, the interface circuit 7202 performs at least one of the communication steps such as sending and / or receiving in the above method. The interface circuit 7202 performs the communication steps such as sending and / or receiving in the above method, for example, means that the interface circuit 7202 performs data interaction between the processor 7201, the chip 7200, the memory 7203 or the transceiver device. In some embodiments, the processor 7201 performs at least one of the other steps.

[0739] The modules and / or devices described in the embodiments such as virtual devices, physical devices, chips, etc. can be combined or separated as needed. Optionally, some or all steps can also be performed by multiple modules and / or devices in collaboration, which is not limited here.

[0740] The present disclosure also proposes a storage medium, on which instructions are stored, and when the instructions are executed on the communication device 7100, the communication device 7100 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 to this, and it can also be a storage medium readable by other devices. Optionally, the storage medium can be a non-transitory storage medium, but is not limited to this, and it can also be a temporary storage medium.

[0741] The present disclosure also proposes a program product, which, when executed by the communication device 7100, enables the communication device 7100 to execute any of the above methods. Optionally, the program product is a computer program product.

[0742] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to execute any one of the above methods.

Claims

1. A communication method, characterized in that: Executed by a terminal, the method includes: Determine first information, wherein the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission; A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

2. The method according to claim 1, characterized in that Each of the spatial basis vectors is configured with an amplitude scaling factor, The determining of the first information includes: Determining a power scaling factor corresponding to each of the spatial basis vectors according to the amplitude scaling factor corresponding to each of the spatial basis vectors; and / or, According to the amplitude scaling factor corresponding to each of the spatial basis vectors, a power scaling factor corresponding to each of the transmission layers is determined.

3. The method according to claim 1 or 2, characterized in that: The determining of the first information includes: Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each of the spatial basis vectors and / or an adjusted power scaling factor corresponding to each of the transmission layers; After the first power scaling factor is adjusted, at least one of the following is satisfied: The sum of the normalized powers corresponding to all the adjusted spatial basis vectors is less than or equal to 1; The sum of the normalized powers corresponding to all the transmission layers after adjustment is less than or equal to 1; The adjusted power scaling factor corresponding to each of the spatial basis vectors is less than or equal to the square of the corresponding amplitude scaling factor.

4. The method according to claim 3, characterized in that The first power scaling factor includes at least one of: a power scaling factor corresponding to a candidate spatial basis vector, wherein the power scaling factor corresponding to the candidate spatial basis vector is greater than or equal to a first threshold; a power scaling factor corresponding to a first spatial basis vector, wherein the first spatial basis vector is an optimal spatial basis vector among the candidate spatial basis vectors; a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector; A power scaling factor corresponding to a first transmission layer, where the first transmission layer is the strongest transmission layer among the candidate transmission layers.

5. The method according to claim 4, characterized in that The first threshold is any one of the following: or 1; Among them, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

6. The method according to claim 4 or 5, characterized in that: The candidate spatial basis vectors correspond to first codewords, where the first codewords are one or more codewords among the codewords used for the MIMO transmission.

7. The method according to any one of claims 4 to 6, characterized in that: The method further comprises: Sending second information to the network device, wherein the second information includes at least one of the following: an adjusted power scaling factor corresponding to each of the spatial basis vectors; an adjusted power scaling factor corresponding to each of the transmission layers; an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; an adjusted power scaling factor corresponding to each of the candidate transmission layers; the first transport layer; The adjusted power scaling factor corresponding to the first transmission layer.

8. The method according to any one of claims 4 to 7, characterized in that: The method comprises: receiving third information sent by the network device; Determining the first power scaling factor according to the third information; The third information is used to indicate at least one of the following: Whether to adjust the power scaling factor corresponding to the candidate spatial basis vector; Whether to adjust the power scaling factor corresponding to the candidate transmission layer; whether to adjust the power scaling factor corresponding to the first spatial basis vector; Whether to adjust the power scaling factor corresponding to the first transmission layer.

9. The method according to any one of claims 4 to 7, characterized in that: The method comprises: The first power scaling factor is determined by negotiation with a network device.

10. The method according to any one of claims 4 to 9, characterized in that: The first power scaling factor includes the candidate spatial basis vector, or a power scaling factor corresponding to the candidate transmission layer; The adjusting the first power scaling factor includes: The power scaling factor corresponding to each of the candidate spatial basis vectors or the power scaling factor corresponding to each of the candidate transmission layers is adjusted to Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector; The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

11. The method according to any one of claims 4 to 10, characterized in that: The first power scaling factor includes the first spatial basis vector or the first transmission layer corresponding power scaling factor; The adjusting the first power scaling factor includes: The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or, Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1; The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

12. The method according to any one of claims 4 to 11, characterized in that: The first power scaling factor includes the candidate spatial basis vector, or a power scaling factor corresponding to the candidate transmission layer; The adjusting the first power scaling factor includes: Determine that the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers is greater than or equal to the first threshold, and adjust the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold.

13. The method according to any one of claims 1 to 12, characterized in that: The determining of the first information includes: receiving second information sent by the network device; determining the first information according to the second information; The second information includes at least one of the following: an adjusted power scaling factor corresponding to each of the spatial basis vectors; an adjusted power scaling factor corresponding to each of the transmission layers; an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; an adjusted power scaling factor corresponding to each of the candidate transmission layers; the first transport layer; The adjusted power scaling factor corresponding to the first transmission layer.

14. A communication method, characterized in that: Executed by a network device, the method includes: Determine first information, wherein the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission; A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

15. The method according to claim 14, characterized in that The method comprises: Sending fourth information, where the fourth information is used to indicate an amplitude scaling factor corresponding to each of the spatial domain basis vectors; The amplitude scaling factor is used to determine a power scaling factor corresponding to each of the spatial basis vectors; and / or, is used to determine a power scaling factor corresponding to each of the transmission layers.

16. The method according to claim 14 or 15, characterized in that The determining of the first information includes: Adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each of the spatial basis vectors and / or an adjusted power scaling factor corresponding to each of the transmission layers; After the first power scaling factor is adjusted, at least one of the following is satisfied: The sum of the normalized powers corresponding to all the adjusted spatial basis vectors is less than or equal to 1; The sum of the normalized powers corresponding to all the transmission layers after adjustment is less than or equal to 1; The adjusted power scaling factor corresponding to each of the spatial basis vectors is less than or equal to the square of the corresponding amplitude scaling factor.

17. The method according to claim 16, characterized in that The first power scaling factor includes at least one of: a power scaling factor corresponding to a candidate spatial basis vector, wherein the power scaling factor corresponding to the candidate spatial basis vector is greater than or equal to a first threshold; a power scaling factor corresponding to a first spatial basis vector, wherein the first spatial basis vector is an optimal spatial basis vector among the candidate spatial basis vectors; a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector; A power scaling factor corresponding to a first transmission layer, where the first transmission layer is the strongest transmission layer among the candidate transmission layers.

18. The method according to claim 17, characterized in that The first threshold is any one of the following: or 1; Among them, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

19. The method according to claim 17 or 18, characterized in that The candidate spatial basis vectors correspond to first codewords, where the first codewords are one or more codewords among the codewords used for the MIMO transmission.

20. The method according to any one of claims 17 to 19, characterized in that: The method further comprises: Sending second information to the terminal, where the second information includes at least one of the following: an adjusted power scaling factor corresponding to each of the spatial basis vectors; an adjusted power scaling factor corresponding to each of the transmission layers; an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; an adjusted power scaling factor corresponding to each of the candidate transmission layers; the first transport layer; The adjusted power scaling factor corresponding to the first transmission layer.

21. The method according to any one of claims 16 to 20, characterized in that: The method comprises: receiving third information sent by the terminal; Determining the first power scaling factor according to the third information; The third information is used to indicate at least one of the following: Whether to adjust the power scaling factor corresponding to the candidate spatial basis vector; Whether to adjust the power scaling factor corresponding to the candidate transmission layer; whether to adjust the power scaling factor corresponding to the first spatial basis vector; Whether to adjust the power scaling factor corresponding to the first transmission layer.

22. The method according to any one of claims 16 to 20, characterized in that: The method comprises: The first power scaling factor is determined by negotiation with the terminal.

23. The method according to any one of claims 17 to 22, characterized in that: The first power scaling factor includes the candidate spatial basis vector, or a power scaling factor corresponding to the candidate transmission layer; The adjusting the first power scaling factor includes: The power scaling factor corresponding to each of the candidate spatial basis vectors or the power scaling factor corresponding to each of the candidate transmission layers is adjusted to Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector; The power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

24. The method according to any one of claims 17 to 23, characterized in that: The first power scaling factor includes the first spatial basis vector or the first transmission layer corresponding power scaling factor; The adjusting the first power scaling factor includes: The power scaling factor corresponding to the first spatial basis vector or the first transmission layer is adjusted to or, Where N represents the number of second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vector, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of the third spatial basis vector, r j represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1; The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is the spatial basis vector of the candidate spatial basis vectors excluding the first spatial basis vector.

25. The method according to any one of claims 17 to 24, characterized in that: The first power scaling factor includes the candidate spatial basis vector, or a power scaling factor corresponding to the candidate transmission layer; The adjusting the first power scaling factor includes: Determine that the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers is greater than or equal to the first threshold, and adjust the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold.

26. The method according to any one of claims 14 to 25, characterized in that: The determining of the first information includes: receiving second information sent by the terminal; determining the first information according to the second information; The second information includes at least one of the following: an adjusted power scaling factor corresponding to each of the spatial basis vectors; an adjusted power scaling factor corresponding to each of the transmission layers; an adjusted power scaling factor corresponding to each of the candidate spatial basis vectors; the first spatial basis vector; the adjusted power scaling factor corresponding to the first spatial basis vector; an adjusted power scaling factor corresponding to each of the candidate transmission layers; the first transport layer; The adjusted power scaling factor corresponding to the first transmission layer.

27. A terminal, characterized in that: include: A processing module is used to determine first information, wherein the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission; A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

28. A network device, characterized in that: include: A processing module is used to determine first information, wherein the first information includes at least one of the following: a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission; A power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in MIMO transmission.

29. A communication device, characterized in that: include: one or more processors; The communication device is used to execute the communication method described in any one of claims 1 to 13 or any one of claims 14 to 26.

30. A communication system, characterized in that: It comprises a network device and a terminal, wherein the terminal is configured to implement the communication method according to any one of claims 1 to 13, and the network device is configured to implement the communication method according to any one of claims 14 to 26.

31. 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 communication method according to any one of claims 1 to 13 or any one of claims 14 to 26.

32. A computer program product comprising a computer program and / or instructions, characterized in that When the computer program and / or the instructions are executed by a communication device, the communication method according to any one of claims 1 to 13 or any one of claims 14 to 26 is implemented.

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