Communication method and system, and device and storage medium

Abstract

The present disclosure relates to a communication method and system, and a device and a storage medium. The method can be executed by a terminal, and comprises: determining first information, wherein the first information comprises at least one of the following: a power scaling factor corresponding to each spatial-domain basis vector, the spatial-domain basis vector being used for beamforming in multiple-input multiple-output (MIMO) transmission; and a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to a data stream in the MIMO transmission. The transmission power corresponding to each data stream can be effectively allocated, thereby effectively ensuring the reliability of data transmission.

Description

Communication method, device, system and storage medium TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of communication, and particularly relates to a communication method, device, system and storage medium. BACKGROUND

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

[0003] SUMMARY

[0004] The present disclosure provides a communication method, device, system and storage medium.

[0005] According to a first aspect of the present disclosure, a communication method is provided, performed by a terminal, the method comprising:

[0006] determining first information, the first information comprising at least one of:

[0007] a power scaling factor corresponding to each spatial basis vector used for beamforming in Multiple-Input Multiple-Output (MIMO) transmission;

[0008] a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to one data stream in MIMO transmission.

[0009] According to a second aspect of the present disclosure, a communication method is provided, performed by a network device, the method comprising:

[0010] determining first information, the first information comprising at least one of:

[0011] a power scaling factor corresponding to each spatial basis vector used for beamforming in Multiple-Input Multiple-Output (MIMO) transmission;

[0012] a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to one data stream in MIMO transmission.

[0013] According to a third aspect of the present disclosure, a terminal is provided, comprising:

[0014] a processing module configured to determine first information, the first information comprising at least one of:

[0015] a power scaling factor corresponding to each spatial basis vector used for beamforming in Multiple-Input Multiple-Output (MIMO) transmission;

[0016] a power scaling factor corresponding to each spatial domain basis vector used for beamforming in a multiple input multiple output, MIMO, transmission;

[0017] According to a fourth aspect of the embodiments of the present disclosure, a network device is provided, comprising:

[0018] a processing module, configured to determine first information, the first information comprising at least one of:

[0019] a power scaling factor corresponding to each spatial domain basis vector used for beamforming in a multiple input multiple output, MIMO, transmission;

[0020] a power scaling factor corresponding to each spatial domain basis vector used for beamforming in a multiple input multiple output, MIMO, transmission;

[0021] According to a fifth aspect of the embodiments of the present disclosure, a communication device is provided, comprising:

[0022] one or more processors;

[0023] The communication device is configured to perform the communication method of the first aspect or the second aspect.

[0024] According to a sixth aspect of the embodiments of the present disclosure, a communication system is provided, comprising a network device and a terminal, the terminal is configured to implement the communication method of the first aspect, and the network device is configured to implement the communication method of the second aspect.

[0025] According to a seventh aspect of the embodiments of the present disclosure, a storage medium is provided, the storage medium stores instructions, when the instructions run on a communication device, the communication device performs the communication method of the first aspect or the second aspect.

[0026] According to an eighth aspect of the embodiments of the present disclosure, a computer program product is provided, comprising a computer program and / or instructions, when the computer program and / or the instructions are executed by a communication device, the communication method of the first aspect or the second aspect is implemented.

[0027] In the above embodiments, the terminal can determine the power scaling factor corresponding to each spatial domain basis vector in the MIMO transmission, and / or the power scaling factor corresponding to each transmission layer, which can effectively allocate the transmission power corresponding to each data stream, and effectively ensure the reliability of data transmission. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following describes the drawings required for the embodiments, and the following drawings are only some embodiments of the present disclosure, and do not specifically limit the protection scope of the present disclosure.

[0029] FIG. 1 is one exemplary schematic diagram of an architecture of a communication system provided by embodiments of the present disclosure.

[0030] FIG. 2A is one exemplary interaction schematic diagram of a communication method provided by embodiments of the present disclosure.

[0031] FIG. 2B is one exemplary interaction schematic diagram of a communication method provided by embodiments of the present disclosure.

[0032] FIG. 3A is an exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0033] FIG. 3B is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0034] FIG. 3C is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0035] FIG. 3D is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0036] FIG. 3E is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0037] FIG. 3F is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0038] FIG. 3G is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0039] FIG. 4A is an exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0040] FIG. 4B is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0041] FIG. 4C is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0042] FIG. 4D is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0043] FIG. 4E is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0044] FIG. 4F is one exemplary flow schematic diagram of a communication method provided by embodiments of the present disclosure.

[0045] FIG. 4G is an example flow diagram of a communication method according to embodiments of the present disclosure.

[0046] FIG. 5 is an example flow diagram of a communication method according to embodiments of the present disclosure.

[0047] FIG. 6A is an example structural diagram of a terminal according to embodiments of the present disclosure.

[0048] FIG. 6B is an example structural diagram of a network device according to embodiments of the present disclosure.

[0049] FIG. 7A is an example structural diagram of a communication device according to embodiments of the present disclosure.

[0050] FIG. 7B is an example structural diagram of a communication device according to embodiments of the present disclosure. DETAILED DESCRIPTION

[0051] Embodiments of the present disclosure provide a communication method, device, system and storage medium.

[0052] In a first aspect, embodiments of the present disclosure provide a communication method performed by a terminal, the method comprising:

[0053] determining first information, the first information comprising at least one of:

[0054] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0055] a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to a data stream in MIMO transmission.

[0056] 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, which can effectively allocate the transmission power corresponding to each data stream, and effectively ensure the reliability of data transmission.

[0057] In some embodiments in combination with the first aspect, in some embodiments, each spatial basis vector is configured with an amplitude scaling factor, and the determining the first information comprises:

[0058] determining the power scaling factor corresponding to each spatial basis vector according to the amplitude scaling factor corresponding to each spatial basis vector; and / or,

[0059] determining the power scaling factor corresponding to each transmission layer according to the amplitude scaling factor corresponding to each spatial basis vector.

[0060] 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.

[0061] In some embodiments of the first aspect, the determining the first information comprises:

[0062] The first power scaling factor is adjusted 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.

[0063] After the adjustment of the first power scaling factor, at least one of the following conditions is satisfied:

[0064] The sum of the normalized powers of all the adjusted spatial basis vectors is less than or equal to 1.

[0065] The sum of the normalized powers of all the adjusted transmission layers is less than or equal to 1.

[0066] 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.

[0067] In the above embodiments, the terminal can adjust the power scaling factor 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 constraint of the network device on the amplitude of the spatial basis vector.

[0068] In some embodiments of the first aspect, the first power scaling factor comprises at least one of the following:

[0069] A power scaling factor corresponding to a candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold value.

[0070] A power scaling factor corresponding to a first spatial basis vector, the first spatial basis vector being the optimal spatial basis vector among the candidate spatial basis vectors.

[0071] A power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector.

[0072] A power scaling factor corresponding to a first transmission layer, the first transmission layer being the strongest transmission layer among the candidate transmission layers.

[0073] In the above embodiments, the terminal can adjust the power scaling factor corresponding to each spatial domain basis vector or transmission layer that meets the corresponding condition, i.e., the terminal can adjust each power scaling factor that is not constrained, which can effectively ensure the reliability of the power adjustment.

[0074] In some embodiments of the first aspect, in some embodiments, the first threshold is any one of the following: 1;

[0075] wherein v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial domain basis vector.

[0076] In some embodiments of the first aspect, in some embodiments, the candidate spatial domain basis vector corresponds to a first codeword, and the first codeword is one or more of the codewords used by the MIMO transmission.

[0077] In the above embodiments, the terminal can adjust the power of the spatial domain basis vector and / or the transmission layer corresponding to all or part of the codeword, which effectively improves the flexibility of the power adjustment.

[0078] In some embodiments of the first aspect, in some embodiments, the method further comprises:

[0079] sending, to the network device, second information, the second information comprising at least one of the following:

[0080] a power scaling factor corresponding to each adjusted spatial domain basis vector;

[0081] a power scaling factor corresponding to each adjusted transmission layer;

[0082] a power scaling factor corresponding to each adjusted candidate spatial domain basis vector;

[0083] the first spatial domain basis vector;

[0084] a power scaling factor corresponding to the adjusted first spatial domain basis vector;

[0085] a power scaling factor corresponding to each adjusted candidate transmission layer;

[0086] the first transmission layer;

[0087] a power scaling factor corresponding to the adjusted first transmission layer.

[0088] In the above embodiments, after adjusting the power, the terminal can report to the network device through the second information, which can ensure that the network device and the terminal can reach an agreement on the power-related parameters.

[0089] In some embodiments of the first aspect, the method comprises:

[0090] receiving third information sent by the network device;

[0091] determining the first power scaling factor according to the third information;

[0092] wherein the third information is used to indicate at least one of:

[0093] whether to adjust the power scaling factor corresponding to the candidate spatial basis vector;

[0094] whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0095] whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0096] whether to adjust the power scaling factor corresponding to the first transmission layer.

[0097] In the above embodiments, the terminal can determine which power scaling factors to adjust according to the indication of the network device.

[0098] In some embodiments of the first aspect, the method comprises:

[0099] determining the first power scaling factor by negotiation with the network device.

[0100] In the above embodiments, the terminal and the network device can determine which power scaling factors to adjust through negotiation.

[0101] In some embodiments of the first aspect, the first power scaling factor comprises the power scaling factor corresponding to the candidate spatial basis vector, or the candidate transmission layer;

[0102] the adjusting of the first power scaling factor comprises:

[0103] adjusting 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, to

[0104] wherein 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;

[0105] the power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0106] In some embodiments of the first aspect, the first power scaling factor comprises the first spatial domain basis vector or a first transmission layer corresponding power scaling factor.

[0107] The adjusting the first power scaling factor comprises:

[0108] adjusting the first spatial domain basis vector or the first transmission layer corresponding power scaling factor to or

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

[0110] The second spatial domain basis vector corresponding power scaling factor is less than the first threshold value, and the third spatial domain basis vector is a spatial domain basis vector in the candidate spatial domain basis vectors except the first spatial domain basis vector.

[0111] In some embodiments of the first aspect, the first power scaling factor comprises the candidate spatial domain basis vector or a candidate transmission layer corresponding power scaling factor.

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

[0113] determining that each of the spatial domain basis vector or the transmission layer corresponding power scaling factor is greater than or equal to the first threshold value, and adjusting each of the spatial domain basis vector or the transmission layer corresponding power scaling factor to the first threshold value.

[0114] In some embodiments of the first aspect, the determining the first information comprises:

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

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

[0117] The second information comprises at least one of:

[0118] a power scaling factor corresponding to each of the adjusted spatial domain basis vector.

[0119] a power scaling factor corresponding to each of the adjusted candidate spatial basis vectors;

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

[0121] the first spatial basis vector;

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

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

[0124] the first transmission layer;

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

[0126] In the above embodiments, 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 and / or the power scaling factor corresponding to each transmission layer used by the terminal by receiving the second information sent by the network device.

[0127] In a second aspect, embodiments of the present disclosure provide a communication method performed by a network device, the method comprising:

[0128] determining first information, the first information comprising at least one of:

[0129] a power scaling factor corresponding to each spatial basis vector used for beamforming in a 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 the MIMO transmission.

[0131] In some embodiments in combination with the second aspect, the method comprises:

[0132] sending fourth information, the fourth information being used to indicate an amplitude scaling factor corresponding to each of the spatial basis vectors;

[0133] the amplitude scaling factor being 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 some embodiments in combination with the second aspect, the determining the first information comprises:

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

[0136] wherein, after adjusting the first power scaling factor, at least one of the following is satisfied:

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

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

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

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

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

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

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

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

[0145] In some embodiments in combination with the second aspect, in some embodiments, the first threshold value is any one of: 1, or 1.

[0146] wherein v represents a rank corresponding to the MIMO transmission, and r represents a number of transmission layers corresponding to the spatial domain basis vectors.

[0147] In some embodiments in combination with the second aspect, in some embodiments, the candidate spatial domain basis vector corresponds to a first codeword, the first codeword being one or more codewords among codewords employed by the MIMO transmission.

[0148] In some embodiments in combination with the second aspect, in some embodiments, the method further comprises:

[0149] sending, to the terminal, second information, the second information comprising at least one of:

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

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

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

[0153] the first spatial domain basis vector;

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

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

[0156] the first transmission layer;

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

[0158] In some embodiments in combination with the second aspect, the method comprises:

[0159] receiving third information sent by the terminal;

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

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

[0162] whether the power scaling factor corresponding to the candidate spatial domain basis vector is adjusted;

[0163] whether the power scaling factor corresponding to the candidate transmission layer is adjusted;

[0164] whether the power scaling factor corresponding to the first spatial domain basis vector is adjusted;

[0165] whether the power scaling factor corresponding to the first transmission layer is adjusted.

[0166] In some embodiments in combination with the second aspect, the method comprises:

[0167] determining the first power scaling factor in coordination with the terminal.

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

[0169] the adjusting of the first power scaling factor comprises:

[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 transport layers, is adjusted to...

[0171] Where N represents the number of basis vectors in the second spatial domain, r n s represents the transmission layer number corresponding to the nth spatial basis vector in the second spatial basis vector. n This represents the magnitude 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 power scaling factor corresponding to the first transport layer;

[0174] The adjustment of the first power scaling factor includes:

[0175] Adjust the first spatial basis vector or the power scaling factor corresponding to the first transport layer to... or,

[0176] Where N represents the number of basis vectors in the second spatial domain, r n s represents the transmission layer number corresponding to the nth spatial basis vector in the second spatial basis vector. n R represents the magnitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vector, J represents the number of third spatial basis vectors, and r represents the magnitude scaling factor. j X represents the number of transmission layers corresponding to the j-th spatial basis vector in the third spatial basis vector, and X represents the number of transmission layers corresponding to the first spatial basis vector. X is greater than or equal to 1.

[0177] 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 among the candidate spatial basis vectors excluding the first spatial basis vector.

[0178] In conjunction 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 transport layer;

[0179] The adjustment of the first power scaling factor includes:

[0180] determining 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 value, and adjusting the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold value.

[0181] In some embodiments of the second aspect, the determining the first information comprises:

[0182] receiving second information sent by a terminal;

[0183] determining the first information according to the second information;

[0184] The second information comprises at least one of:

[0185] a power scaling factor corresponding to each of the adjusted spatial basis vectors;

[0186] a power scaling factor corresponding to each of the adjusted transmission layers;

[0187] a power scaling factor corresponding to each of the adjusted candidate spatial basis vectors;

[0188] the first spatial basis vector;

[0189] a power scaling factor corresponding to the adjusted first spatial basis vector;

[0190] a power scaling factor corresponding to each of the adjusted candidate transmission layers;

[0191] the first transmission layer;

[0192] a power scaling factor corresponding to the adjusted first transmission layer.

[0193] In a third aspect, an embodiment of the present disclosure provides a terminal, comprising:

[0194] a processing module configured to determine first information, the first information comprising at least one of:

[0195] a power scaling factor corresponding to each spatial basis vector used for beamforming in multiple-input multiple-output (MIMO) transmission;

[0196] a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to one data stream in MIMO transmission.

[0197] In a fourth aspect, an embodiment of the present disclosure provides a network device, comprising:

[0198] a processing module configured to determine first information, the first information comprising at least one of:

[0199] a power scaling factor corresponding to each spatial basis vector used for beamforming in a multiple-input multiple-output (MIMO) transmission;

[0200] a power scaling factor corresponding to each transmission layer, each of the transmission layers corresponding to a data stream in the MIMO transmission.

[0201] In a fifth aspect, an embodiment of the present disclosure provides a communication device, comprising:

[0202] one or more processors;

[0203] The communication device is configured to perform the communication method in the first aspect or the second aspect.

[0204] In a sixth aspect, an embodiment of the present disclosure provides a communication system, comprising: a terminal, a network device; wherein the terminal is configured to perform the method described in the optional implementation of the first aspect, and the network device is configured to perform the method described in the optional implementation of the second aspect.

[0205] In a seventh aspect, an embodiment of the present disclosure provides a storage medium, which stores instructions, when the instructions are run on a communication device, the communication device performs the method described in the optional implementation of the first aspect and the second aspect.

[0206] In an eighth aspect, an embodiment of the present disclosure provides a computer program product, comprising a computer program and / or instructions, when the computer program and / or instructions are executed by a communication device, the communication device performs the method described in the optional implementation of the first aspect and the second aspect.

[0207] In a ninth aspect, an embodiment of the present disclosure provides a computer program, when it is run on a computer, the computer performs the method described in the optional implementation of the first aspect and the second aspect.

[0208] In a tenth aspect, an embodiment of the present disclosure provides a chip or chip system. The chip or chip system comprises a processing circuit configured to perform the method described in the optional implementation of the first aspect and the second aspect.

[0209] It can be understood that the terminal, the network device, the communication system, the storage medium, the program product, the computer program, the chip or the chip system are all used to perform the method proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved are referred to the beneficial effects in the corresponding method, which will not be described here.

[0210] The embodiments of the present disclosure provide a communication method, device, system and storage medium. In some embodiments, the communication method and information processing method, capability reporting method and other terms can be replaced with each other, the communication device and information processing device, capability reporting device and other terms can be replaced with each other, and the information processing system and communication system and other terms can be replaced with each other.

[0211] The embodiments of the present disclosure are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present disclosure. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, some or all steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0212] In the embodiments of the present disclosure, the terms and / or descriptions between the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0213] The terms used in the embodiments of the present disclosure are only for the purpose of describing the specific embodiments, and not as a limitation on the present disclosure.

[0214] In the embodiments of the present disclosure, unless otherwise specified, the elements expressed in singular form, such as "one", "a", "the", "above", "said", "preceding", "this" and the like, can represent "one and only one", or "one or more", "at least one" and the like. For example, in the case of using articles such as "a", "an", "the" and the like in English, the noun after the article can be understood as singular expression, or can be understood as plural expression.

[0215] In the embodiments of the present disclosure, "plurality" means two or more.

[0216] In some embodiments, the terms "at least one of", "one or more", "a plurality of", "multiple" and the like can be replaced with each other.

[0217] In some embodiments, the description of "at least one of A, B", "A and / or B", "in a case A, in another case B", "in response to a case A, in response to a case B", and the like, can include the following technical solutions according to the case: in some embodiments, A (A is executed regardless of B); in some embodiments, B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B); in some embodiments, A and B (A and B are executed). When there are more branches such as A, B, C, and the like, the above is similar.

[0218] In some embodiments, the description of "A or B" and the like can include the following technical solutions according to the case: in some embodiments, A (A is executed regardless of B); in some embodiments, B (B is executed regardless of A); in some embodiments, A and B are selectively executed (A and B are selected from A and B). When there are more branches such as A, B, C, and the like, the above is similar.

[0219] The prefix words "first", "second", and the like in the embodiments of the present disclosure are only used to distinguish different description objects, and do not constitute a limitation on the position, order, priority, quantity, or content of the description objects. The description of the description objects should refer to the description in the context of the claims or embodiments, and should not be limited by the prefix words. For example, the description object is "field", and the ordinal words before "field" in "first field" and "second field" do not limit the position or order between "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of "first field" and "second field". For another example, the description object is "level", and the ordinal words before "level" in "first level" and "second level" do not limit the priority between "levels". For another example, the quantity of the description object is not limited by the ordinal words, and can be one or more. For example, "first device", where the quantity of "device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "first device" and "second device" can be the same device or different devices, and their types can be the same or different; for another example, the description object is "information", and "first information" and "second information" can be the same information or different information, and their contents can be the same or different.

[0220] In some embodiments, "including A", "containing A", "for indicating A", "carrying A" can be interpreted as directly carrying A, or indirectly indicating A.

[0221] In some embodiments, the terms "time / frequency", "time / frequency domain", and the like refer to the time domain and / or the frequency domain.

[0222] In some embodiments, the terms “in response to,” “in response to determining,” “in the event that,” “when,” “if,” “upon,” and the like can be replaced with each other.

[0223] In some embodiments, the terms “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,” “above,” and the like can be replaced with each other, and the terms “less than,” “less than or equal to,” “not greater than,” “fewer than,” “fewer than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” “below,” and the like can be replaced with each other.

[0224] In some embodiments, an apparatus and the like can be interpreted as an entity, and can also be interpreted as virtual, and the name thereof is not limited to the name described in the embodiments, and the terms “apparatus,” “equipment,” “device,” “circuit,” “network element,” “node,” “function,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” “subject,” and the like can be replaced with each other.

[0225] In some embodiments, “network” can be interpreted as an apparatus (for example, an access network device, a core network device, and the like) included in the network.

[0226] In some embodiments, the terms “access network device (AN device),” “radio access network device (RAN device),” “base station (BS),” “radio base station,” “fixed station,” “node,” “access point,” “transmission point (TP),” “reception point (RP),” “transmission / reception point (TRP),” “panel,” “antenna panel,” “antenna array,” “cell,” “macro cell,” “small cell,” “femto cell,” “pico cell,” “sector,” “cell group,” “serving cell,” “carrier,” “component carrier,” “bandwidth part (BWP),” and the like can be used interchangeably.

[0227] 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 so on can be replaced with each other.

[0228] In some embodiments, the access network device, the core network device, or the network device can be replaced with a terminal. For example, the embodiments of the present disclosure can also be applied to a structure in which communication between the access network device, the core network device, or the network device and the terminal is replaced with communication between a plurality of terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal can also be configured to have all or part of the functions of the access network device. In addition, the terms "uplink," "downlink," and the like can also be replaced with terms corresponding to the inter-terminal communication (e.g., "side"). For example, the uplink channel, the downlink channel, and the like can be replaced with the side channel, and the uplink, the downlink, and the like can be replaced with the sidelink.

[0229] In some embodiments, the terminal can be replaced with the access network device, the core network device, or the network device. In this case, the access network device, the core network device, or the network device can also be configured to have all or part of the functions of the terminal.

[0230] In some embodiments, the data, information, etc. can be obtained in compliance with the laws and regulations of the country where the location is situated.

[0231] In some embodiments, the data, information, etc. can be obtained after obtaining the consent of the user.

[0232] In addition, each element, each row, or each column in the table of the embodiments of the present disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0233] FIG. 1 is an architecture schematic diagram of a communication system according to an embodiment of the present disclosure. As shown in FIG. 1, the communication system 100 includes a terminal 101 and a network device 102. Optionally, the network device 102 can include at least one of an access network device and a core network device.

[0234] In some embodiments, the terminal 101 includes at least one of a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a 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 smart grid, a wireless terminal device in transportation safety, a wireless terminal device in smart city, a wireless terminal device in smart home, etc., but is not limited thereto.

[0235] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network, and the access network device can include at least one of an evolved NodeB (eNB) in a 5G communication system, a next generation eNB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, an access node in a Wi-Fi system, but is not limited thereto.

[0236] In some embodiments, the technical solutions of the present disclosure can be applied to an Open RAN architecture, at this time, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can become internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be realized through software or programs.

[0237] In some embodiments, the access network device can be composed of a central unit (CU) and a distributed unit (DU), wherein the CU can also be referred to as a control unit (control unit). The CU-DU structure can split the protocol layers of the access network device, and part of the functions of the protocol layers are controlled by the CU, and the remaining part or all of the functions of the protocol layers are distributed in the DU and controlled by the CU, but the present disclosure is not limited thereto.

[0238] In some embodiments, the core network device can be one device including a first network element, a second network element, etc., or can be multiple devices or device groups, respectively including all or part of the first network element, the second network element, etc. The network element can be virtual or physical. The core network includes, for example, at least one of an evolved packet core (EPC), a 5G core network (5GCN), and a next generation core (NGC).

[0239] It can be understood that the communication system described in the embodiments of the present disclosure is for more clearly illustrating the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions proposed by the embodiments of the present disclosure. Those skilled in the art can know that, with the evolution of system architecture and the appearance of new business scenarios, the technical solutions proposed by the embodiments of the present disclosure are also applicable to similar technical problems.

[0240] The following embodiments of the present disclosure can be applied to the communication system 100 shown in FIG. 1 or part of the subjects, but are not limited thereto. The subjects shown in FIG. 1 are exemplary, and the communication system can include all or part of the subjects in FIG. 1, or other subjects other than FIG. 1. The number and form of each subject is arbitrary, each subject can be physical or virtual, the connection relationship between each subject is exemplary, each subject can not be connected or can be connected, the connection can be in any way, can be direct connection or indirect connection, can be wired connection or wireless connection.

[0241] Embodiments of the present disclosure can 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 (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), system using other communication methods, next-generation system expanded based thereon, and the like. Further, a plurality of systems can be applied in combination (for example, combination of LTE or LTE-A and 5G, and the like).

[0242] In some embodiments, for a transmission rank Rl = v = 1 of a MIMO transmission, in the frequency range 6425 - 7125 MHz, if feedback is based on Rel-19 Type I codebook, when a two-dimensional discrete Fourier transform (2D-DFT) vector is used as the spatial domain basis vector (SD basis vector) of the codebook, it can produce sidelobes or grating lobes in undesired directions. This high gain in undesired directions can cause interference to other systems that share the same time and frequency resources with the ground network, e.g., satellite systems, when the main beam is directed above the horizon to serve user equipments (UEs) in tall buildings.

[0243] In some embodiments, to solve this problem, the SD basis vectors can be amplitude-constrained. The amplitude-constraint is applied to each group of X1X2SD basis vectors, with the amplitude range being The amplitude-constraint can be indicated by 3 bits.

[0244] In some embodiments, when v > 1, if the SD basis vector selected by the terminal is already configured with an amplitude-constraint by the network, the power of the SD basis vector can be determined according to the amplitude scaling factor configured by the network, with the power being where s i denotes the amplitude scaling factor of the i-th SD basis vector configured by the network. Otherwise, the SD basis vector is not amplitude-constrained. If the power of the SD basis vector without the configured amplitude-constraint is still determined in the traditional way, it is When the configured amplitude scaling factor is smaller than , it will result in a total power smaller than 1 (assuming the total power is normalized to 1).

[0245] For example, when v = 3 transmission, the codebook structure based on Rel-19 Type I codebook is shown in the following equation:

[0246] Assume that the network configures the amplitude scaling factor for the vector v l,m to be and the amplitude scaling factor for the vector v l′,m′ to be From the above equation, it can be seen that there are two layers that use v l,m , so the total power of the two layers is Therefore, the total power is Therefore, we have power remaining. 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 a corresponding power scaling factor. With the above codebook, if the network configures the power scaling factor for the first layer and the third layer as 1 / 3 and the power scaling factor for the second layer as 1 / 2, then the total power is 1 / 3 + 1 / 3 + 1 / 2 > 1, which exceeds the capability of the terminal.

[0247] With reference to the above embodiments, how to ensure that the power is effectively constrained while ensuring the reliability of power allocation is a problem to be solved.

[0248] FIG. 2A is an interaction diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2A, the embodiment of the present disclosure relates to a communication method, and the method comprises:

[0249] In step S2101, the network device sends fourth information to the terminal.

[0250] In some embodiments, the fourth information is used to indicate or configure the amplitude scaling factor corresponding to at least one spatial basis vector. Optionally, the fourth information is used to indicate or configure the amplitude scaling factor corresponding to each spatial basis vector.

[0251] It should be noted that the spatial basis vector involved in the embodiment of the present disclosure can refer to the spatial basis vector selected by the terminal in MIMO transmission. Optionally, the spatial basis vector is used for beamforming in MIMO transmission.

[0252] In some embodiments, the amplitude scaling factor can be used to determine the power scaling factor corresponding to each spatial basis vector, and / or used to determine the power scaling factor corresponding to each transmission layer.

[0253] It can be understood that each transmission layer can correspond to one data stream in MIMO transmission. In MIMO transmission, data can 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.

[0254] In some embodiments, the fourth information can only indicate the amplitude scaling factor corresponding to part of the spatial basis vectors selected by the terminal. That is, the network device can only configure the amplitude scaling factor corresponding to part of the spatial basis vectors.

[0255] In some embodiments, the fourth information can be referred to as “amplitude configuration information”, “amplitude indication information”, etc., and the name thereof is not limited in the embodiment of the present disclosure.

[0256] In some embodiments, the fourth information can be used to indicate or configure the power scaling factor corresponding to each spatial basis vector. Alternatively, the fourth information can be used to indicate or configure the power scaling factor corresponding to each transmission layer.

[0257] In some embodiments, the terminal receives the fourth information sent by the network device.

[0258] In step S2102, the terminal determines the power scaling factor corresponding to each spatial basis vector and / or the power scaling factor corresponding to each transmission layer according to the fourth information.

[0259] In some embodiments, the terminal determines the power scaling factor corresponding to each spatial basis vector according to the fourth information. Alternatively, the terminal determines the power scaling factor corresponding to each transmission layer according to the fourth information.

[0260] 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. Alternatively, 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.

[0261] 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. Alternatively, 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.

[0262] In some embodiments, the power scaling factor corresponding to each 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 power (normalized power) corresponding to the multiple transmission layers can be equal to the power scaling factor.

[0263] In some embodiments, the power scaling factor corresponding to each transmission layer can be used to constrain the total power corresponding to the transmission layer. For example, the power corresponding to each transmission layer can be equal to the power scaling factor corresponding to the transmission layer.

[0264] In some embodiments, the power scaling factor corresponding to a transmission layer can refer to the power scaling factor corresponding to the spatial basis vector adopted by the transmission layer. For example, if the power scaling factor corresponding to the spatial basis vector adopted by a transmission layer is then the power scaling factor corresponding to the transmission layer is also

[0265] In some embodiments, the network device can also determine the power scaling factor corresponding to each spatial basis vector and / or the power scaling factor corresponding to each transmission layer according to the fourth information, i.e., the amplitude scaling factor configured by the network device for the terminal.

[0266] In some embodiments, the network device determines, according to the fourth information, a power scaling factor corresponding to each spatial basis vector. Alternatively, the network device determines, according to the fourth information, a power scaling factor corresponding to each transmission layer.

[0267] In some embodiments, for any spatial basis vector, the terminal and / or the network device can determine the power scaling factor corresponding to the spatial basis vector as the square of the amplitude scaling factor.

[0268] For example, for any spatial basis vector, if the spatial basis vector corresponds to one transmission layer, the terminal and / or the network device can determine, based on the amplitude scaling factor s corresponding to the spatial basis vector, the power scaling factor corresponding to the spatial basis vector as and determine the power scaling factor corresponding to the transmission layer corresponding to the spatial basis vector as wherein if the network device configures the amplitude scaling factor s for a spatial basis vector to be less than or equal to the power scaling factor corresponding to the spatial basis vector can be determined as if the network device configures the amplitude scaling factor s for a spatial basis vector to be greater than the power scaling factor corresponding to the spatial basis vector can be determined as s 2 .

[0269] In some embodiments, if the network device configures the amplitude scaling factor only for part of the spatial basis vectors, for the spatial basis vectors for which the amplitude scaling factor is not configured, the terminal or the network device can determine the power scaling factor corresponding to the spatial basis vector as a preset value, which can be, for example, or or other predefined values. Wherein v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0270] 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 the network device can further determine at least one of the following:

[0271] the sum of the normalized powers corresponding to all spatial basis vectors; the sum of the normalized powers corresponding to all transmission layers.

[0272] In some embodiments, if the terminal determines that at least one of the following conditions is met, the terminal performs one or more of the subsequent steps S2103 to S2106 (e.g., expects to receive the third information sent by the network device): the sum of the normalized powers corresponding to all the spatial basis vectors is not equal to 1 (or is greater than 1); the sum of the normalized powers corresponding to all the transmission layers is not equal to 1 (or is greater than 1); and the network device only configures the amplitude scaling factors corresponding to part of the spatial basis vectors.

[0273] In some embodiments, if the terminal determines that at least one of the following conditions is met, the terminal determines the first information and does not perform any of the subsequent steps S2103 to S2106: the sum of the normalized powers corresponding to all the spatial basis vectors is equal to 1; the sum of the normalized powers corresponding to all the transmission layers is equal to 1; and the network device configures the amplitude scaling factor corresponding to each spatial basis vector.

[0274] 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 if it determines that the sum of the normalized powers corresponding to all the spatial basis vectors is not equal to 1 (or is greater than 1), or the sum of the normalized powers corresponding to all the spatial basis vectors is not equal to 1 (or is greater than 1), or the network device only configures the amplitude scaling factor corresponding to part of the spatial basis vectors. Otherwise, the terminal can directly obtain the first information according to the fourth 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.

[0275] 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, the terminal can send corresponding indication information to the network device to indicate that the terminal does not adjust the power scaling factor. Optionally, after receiving the indication information, the network device can determine the power scaling factor corresponding to each spatial basis vector and / or the power scaling factor corresponding to each transmission layer, i.e., the first information, according to the amplitude scaling factor corresponding to each spatial basis vector configured by the network device for the terminal.

[0276] In some embodiments, the power scaling factor corresponding to each spatial basis vector and / or the power scaling factor corresponding to each transmission layer determined in step S2102 can be referred to as an initial power scaling factor. In some possible implementation manners, the terminal or the network device can further adjust the power scaling factor.

[0277] In step S2103, the network device sends third information to the terminal.

[0278] 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.

[0279] 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.

[0280] For example, if the third information is used to indicate that the power scaling factor corresponding to the candidate spatial basis vector is adjusted, the terminal can determine that the first power scaling factor includes the power scaling factor corresponding to the candidate spatial basis vector, and if the third information is used to indicate that the power scaling factor corresponding to the first spatial basis vector is adjusted, the terminal can determine that the first power scaling factor includes the power scaling factor corresponding to the first spatial basis vector.

[0281] In some embodiments, the third information is also used to indicate an adjustment value corresponding to the first power scaling factor. Optionally, the adjustment value can be predefined or determined by the network device.

[0282] For example, if the third information indicates that the terminal adjusts 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, and further, 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 indication of the third information.

[0283] In some embodiments, step S2103 is optional, and the terminal can determine the first power scaling factor and / or the adjustment value corresponding to the first power scaling factor by itself.

[0284] In some embodiments, the network device can send the third information through at least one of the following: Radio Resource Control (RRC) signaling, Media Access Control Control Element (MAC-CE), or Downlink Control Information (DCI) signaling.

[0285] In step S2104, the terminal determines the first power scaling factor.

[0286] In some embodiments, the first power scaling factor includes at least one of the following:

[0287] the 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 value;

[0288] a power scaling factor corresponding to the first spatial domain basis vector, the first spatial domain basis vector being an optimal spatial domain basis vector among the candidate spatial domain basis vectors;

[0289] a power scaling factor corresponding to the candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial domain basis vector;

[0290] a power scaling factor corresponding to the first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

[0291] In some embodiments, the terminal can traverse all the candidate spatial domain basis vectors, and determine, based on the received power, a spatial domain basis vector with the largest received power as the optimal spatial domain basis vector. Alternatively, the terminal can traverse all the candidate layers, and determine, based on the received power, a transmission layer with the largest received power as the strongest transmission layer.

[0292] It is worth noting that the number of the candidate spatial domain basis vectors, the first spatial domain basis vector, the candidate transmission layer, and the first transmission layer is not limited in the embodiments of the present disclosure.

[0293] For example, the number of the candidate spatial domain basis vectors can be one or more. The number of the candidate transmission layers can be greater than or equal to the number of the candidate spatial domain basis vectors, for example, multiple candidate transmission layers can use the same candidate spatial domain basis vector, and the number of transmission layers corresponding to one candidate spatial domain basis vector can be greater than or equal to 1. The number of the first spatial domain basis vector or the first transmission layer can also be one or more, for example, the received power of multiple spatial domain basis vectors or multiple transmission layers is the same and greater than that of other spatial domain basis vectors or other transmission layers.

[0294] In some embodiments, the spatial domain basis vector used by the first transmission layer can be the first spatial domain basis vector. That is, the spatial domain basis vector used by the strongest layer among the candidate layers can be the optimal spatial domain basis vector.

[0295] In some embodiments, the first threshold value can be or, Alternatively, the first threshold value can also be any other predefined value, and the embodiments of the present disclosure do not limit the value of the first threshold value. Wherein, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial domain basis vector.

[0296] It can be understood that for each spatial domain basis vector or each transmission layer, the corresponding first threshold value can be different, for example, for a certain spatial domain basis vector, if only one transmission layer uses the spatial domain basis vector, the first threshold value corresponding to the spatial domain basis vector and the transmission layer can be If multiple transmission layers use the spatial domain basis vector, the first threshold value corresponding to the spatial domain basis vector and each transmission layer using the spatial domain basis vector can be P represents the number of transport layers.

[0297] In some embodiments, the magnitude 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... Candidate spatial basis vectors can be those whose magnitude scaling factor is less than or equal to the spatial basis vectors used by the terminal. Spatial basis vectors.

[0298] In some embodiments, candidate spatial basis vectors may also be referred to as unconstrained spatial basis vectors. Optionally, candidate spatial basis vectors may include spatial basis vectors for which the network has not configured a corresponding magnitude scaling factor. For example, the first threshold is... For spatial basis vectors without a configured amplitude scaling factor, the corresponding power scaling factor can be set to the default value. At this point, the spatial basis vector can be determined as a candidate spatial basis vector.

[0299] In some embodiments, the candidate spatial basis vectors correspond to a first codeword, which 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 vectors (or the transport layer) of all or some of the codewords.

[0300] In other words, multiple (e.g., two) codewords can be used for transmission in MIMO (e.g., when the transmission rank is greater than 4). When adjusting the power, the power scaling factor corresponding to the spatial basis vector (or transmission layer) of one or more selected codewords (the first codeword) can be adjusted only.

[0301] Optionally, the first codeword can be determined by the terminal and reported to the network device, or it can be indicated by the network device, or it can be determined through negotiation between the terminal and the network device. This embodiment of the present disclosure does not limit this.

[0302] It is understandable that when a candidate spatial basis vector corresponds to the first codeword, the codeword corresponding to the candidate transport layer also corresponds to the first codeword.

[0303] In some embodiments, the terminal may determine a first power scaling factor based on third information. Optional implementations of the terminal determining the first power scaling factor based on third information can be found in the related portion of step S2103, and will not be repeated here.

[0304] In some embodiments, the terminal may determine a first power scaling factor according to a predefined strategy.

[0305] For example, if the terminal determines that the normalized power corresponding to all the spatial domain basis vectors is not equal to 1 in step S2102, the terminal can determine, according to a predefined strategy, that the first power scaling factor includes a candidate spatial domain basis vector, i.e., the power scaling factor corresponding to the candidate spatial domain basis vector is adjusted; or the terminal can determine, according to a predefined strategy, that the first power scaling factor includes the first spatial domain basis vector, i.e., the power scaling factor corresponding to the first spatial domain basis vector is adjusted.

[0306] In some embodiments, the terminal and the network device can also determine the first power scaling factor through negotiation. Optionally, the terminal and the network device can also determine, through negotiation, an adjustment value of the first power scaling factor. For example, the terminal and the network device negotiate to determine the adjusted power scaling factor corresponding to each spatial domain basis vector and / or the adjusted power scaling factor corresponding to each transmission layer.

[0307] In some embodiments, after the terminal determines the first power scaling factor, the terminal performs step S2105 and / or step S2106.

[0308] It should be noted that the first power scaling factor involved in the embodiments of the present disclosure can refer to a power scaling factor that needs to be adjusted. The power scaling factor that needs to be adjusted can be the power scaling factor determined by the terminal according to the fourth information. For example, the terminal can adjust the initial power scaling factor determined in step S2102 to meet the corresponding requirements.

[0309] In step S2105, the terminal adjusts the first power scaling factor to obtain the adjusted power scaling factor corresponding to each spatial domain basis vector and / or the adjusted power scaling factor corresponding to each transmission layer.

[0310] In some embodiments, the terminal can adjust the first power scaling factor according to the third information. Optionally, the adjustment value of the first power scaling factor can be determined according to the third information.

[0311] In some embodiments, the terminal can also adjust the first power scaling factor according to a predefined strategy.

[0312] In some embodiments, after the first power scaling factor is adjusted, at least one of the following conditions is met:

[0313] The sum of the normalized power corresponding to all the adjusted spatial domain basis vectors is less than or equal to 1;

[0314] The sum of the normalized power corresponding to all the adjusted transmission layers is less than or equal to 1;

[0315] The power scaling factor corresponding to each adjusted spatial domain basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0316] Optionally, the sum of the normalized powers corresponding to all the adjusted spatial basis vectors equals 1. Optionally, the sum of the normalized powers corresponding to all the adjusted transmission layers equals 1.

[0317] 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 can be further adjusted to be equal to the square of the amplitude scaling factor configured for the spatial basis vector.

[0318] For example, with reference to the optional implementation described below, if the power scaling factor corresponding to the first spatial basis vector is adjusted to be and it is found that the corresponding power scaling factor is adjusted to be greater than s 2 , the power scaling factor corresponding to the first spatial basis vector can be adjusted to be s 2 , where s represents the amplitude scaling factor configured by the network device for the first spatial basis vector.

[0319] In some embodiments, the first power scaling factor includes the power scaling factor corresponding to a candidate spatial basis vector, or a candidate transmission layer; and the adjusting of the first power scaling factor includes:

[0320] adjusting the power scaling factor corresponding to each candidate spatial basis vector, or the power scaling factor corresponding to each candidate transmission layer, to be

[0321] where N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vectors.

[0322] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold value.

[0323] It can be understood that the second spatial basis vector can be a spatial basis vector other than the candidate spatial basis vectors. Optionally, the amplitude scaling factor corresponding to the second spatial basis vector is less than the square root of the first threshold value. Optionally, the second spatial basis vector can be referred to as a constrained spatial basis vector.

[0324] That is, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted by the sum of the normalized powers corresponding to all the spatial basis vectors or all the transmission layers, and then the power scaling factor corresponding to each of the spatial basis vectors or the transmission layers can be obtained. The total power can be normalized total power, i.e., the value of the total power can be 1.

[0325] In some embodiments, the first power scaling factor includes a power scaling factor corresponding to the first spatial basis vector or the first transmission layer;

[0326] adjusting the first power scaling factor includes:

[0327] adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer to or,

[0328] where N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vectors, J represents the number of the third spatial basis vectors, r j represents the number of transmission layers corresponding to the jth spatial basis vector in the third spatial basis vectors, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1.

[0329] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold, and the third spatial basis vector is a spatial basis vector in the candidate spatial basis vectors except the first spatial basis vector.

[0330] That is, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted by the sum of the normalized powers corresponding to all the spatial basis vectors or all the transmission layers, and then the power scaling factor corresponding to each of the spatial basis vectors or the transmission layers can be obtained. The total power can be normalized total power, i.e., the value of the total power can be 1.

[0331] Optionally, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer can be adjusted to or, where M represents the number of spatial basis vectors except 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 in the spatial basis vectors, s m represents the amplitude scaling factor corresponding to the mth spatial basis vector in the spatial basis vectors.

[0332] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial domain basis vector, or a candidate transmission layer;

[0333] The first power scaling factor is adjusted, comprising:

[0334] It is determined that a power scaling factor corresponding to each spatial domain basis vector or each transmission layer is greater than or equal to a first threshold value, and the power scaling factor corresponding to each spatial domain basis vector or each transmission layer is adjusted to the first threshold value.

[0335] That is, when the power scaling factors corresponding to all spatial domain basis vectors used in the MIMO transmission are greater than the first threshold value, the power scaling factor corresponding to each spatial domain basis vector can be determined as the first threshold value, or when the power scaling factors corresponding to all transmission layers in the MIMO transmission are greater than the first threshold value, the power scaling factor corresponding to each transmission layer can be determined as the first threshold value.

[0336] In some embodiments, the network device can configure amplitude scaling factors for only part of the spatial domain basis vectors, the candidate spatial domain basis vector can comprise a spatial domain basis vector for which no amplitude scaling factor is configured, and the candidate transmission layer comprises a transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured. When the first power scaling factor is adjusted, only the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate spatial domain basis vectors can be adjusted, or only the transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate transmission layers can be adjusted. Optionally, the first spatial domain basis vector is the optimal spatial domain basis vector among the spatial domain basis vectors for which no amplitude scaling factor is configured, and the first transmission layer is the strongest transmission layer among the transmission layers using the spatial domain basis vector for which no amplitude scaling factor is configured.

[0337] Optionally, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial domain basis vector, or a candidate transmission layer, and adjusting the first power scaling factor comprises:

[0338] 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

[0339] wherein the first candidate basis vector is a spatial domain basis vector for which no amplitude scaling factor is configured among the candidate spatial domain basis vectors, the first candidate transmission layer is a transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate transmission layers, I represents a spatial domain basis vector for which an amplitude scaling factor is configured, and r I represents the number of transmission layers corresponding to the i th spatial domain basis vector among the spatial domain basis vectors for which an amplitude scaling factor is configured, and s I represents the number of transmission layers corresponding to the i th spatial domain basis vector among the spatial domain basis vectors for which an amplitude scaling factor is configured.

[0340] Optionally, the first power scaling factor comprises a first spatial domain basis vector, or a power scaling factor corresponding to a first transmission layer, and adjusting the first power scaling factor comprises:

[0341] adjusting the power scaling factor corresponding to each first spatial domain basis vector, or the power scaling factor corresponding to each first transmission layer, to wherein I denotes a spatial domain basis vector configured with an amplitude scaling factor, r I denotes a number of transmission layers corresponding to an i-th spatial domain basis vector among the spatial domain basis vectors configured with the amplitude scaling factor, s I denotes a number of transmission layers corresponding to an i-th spatial domain basis vector among the spatial domain basis vectors configured with the amplitude scaling factor, Q denotes a spatial domain basis vector among the first candidate basis vectors except for the first spatial domain basis vector, r q denotes a number of transmission layers corresponding to an i-th spatial domain basis vector among the spatial domain basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer) in the first candidate basis vectors, s q denotes a number of transmission layers corresponding to an i-th spatial domain basis vector among the spatial domain basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer) in the first candidate basis vectors;

[0342] or adjusting the power scaling factor corresponding to the first spatial domain basis vector, or the power scaling factor corresponding to the first transmission layer, to or wherein M denotes a number of spatial domain basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer), r m denotes a number of transmission layers corresponding to an m-th spatial domain basis vector among the spatial domain basis vectors, s m denotes an amplitude scaling factor corresponding to an m-th spatial domain basis vector among the spatial domain basis vectors.

[0343] 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 domain basis vector, or the power scaling factor corresponding to each transmission layer, which is finally used.

[0344] In some embodiments, the terminal performs step S2106 after adjusting the first power scaling factor.

[0345] In step S2106, the terminal sends the second information to the network device.

[0346] In some embodiments, the second information is used to indicate the spatial domain basis vector or the transmission layer whose power scaling factor is adjusted, and / or the adjusted power scaling factor.

[0347] In some embodiments, the second information comprises at least one of: a power scaling factor corresponding to each adjusted spatial domain basis vector; a power scaling factor corresponding to each adjusted transmission layer; a power scaling factor corresponding to each adjusted candidate spatial domain basis vector; the first spatial domain basis vector; a power scaling factor corresponding to the adjusted first spatial domain basis vector; a power scaling factor corresponding to each adjusted candidate transmission layer; the first transmission layer; a power scaling factor corresponding to the adjusted first transmission layer.

[0348] In some embodiments, the content of the second information can 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 domain basis vector, the second information can comprise the power scaling factor corresponding to each adjusted candidate spatial domain basis vector.

[0349] In some embodiments, the second information is used by the network device to determine the first information.

[0350] In some embodiments, the network device receives the second information sent by the terminal. Optionally, the network device performs step S2107 in response to receiving the second information sent by the terminal.

[0351] In some embodiments, the second information can be referred to as “power indication information”, “power adjustment information”, “power reporting”, etc., and the name of the embodiment of the present disclosure is not limited.

[0352] Step S2107: The network device determines the first information according to the second information.

[0353] In some embodiments, the network device determines the power scaling factor corresponding to each adjusted spatial domain basis vector and / or the power scaling factor corresponding to each adjusted transmission layer according to the content indicated by the second information.

[0354] In some embodiments, the network device can determine the initial power scaling factor corresponding to each spatial domain basis vector and / or each transmission layer according to the amplitude scaling factor corresponding to each spatial domain basis vector configured by the network device for the terminal and the second information.

[0355] In the embodiment of the present disclosure, the adjustment is mainly made to the power scaling factor, and it is easy to understand that the adjustment made to the amplitude scaling factor is equivalent to the adjustment made to the power scaling factor to some extent, and therefore, the adjustment made to the power scaling factor in the embodiment of the present disclosure can be replaced by the adjustment made to the amplitude scaling factor, and the adjustment value can be the root mean square of the adjustment value of the power scaling factor.

[0356] For example, if the amplitude scaling factor configured by the network device for a spatial domain 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 can be adjusted to or any other adjustment value involved in the embodiments described above.

[0357] In some embodiments, after determining the first information, the terminal can calculate a Channel Quality Indicator (CQI) based on the power scaling factor corresponding to each spatial domain basis vector and / or the power scaling factor corresponding to each transmission layer. Optionally, the terminal reports the CQI to the network device.

[0358] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and the terms of "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "code point", "bit", "data", "program", "chip", etc. can be replaced with each other.

[0359] In some embodiments, the terms of "codebook", "codeword", "precoding matrix", etc. can be replaced with each other. For example, the codebook can be a collection of one or more codewords / precoding matrices.

[0360] In some embodiments, the terms of "time", "time point", "time", "time position", etc. can be replaced with each other, and the terms of "time length", "time period", "time window", "window", "time", etc. can be replaced with each other.

[0361] 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 replaced with each other.

[0362] In some embodiments, the terms “acquire”, “obtain”, “get”, “receive”, “transmit”, “bidirectional transmission”, “transmit and / or receive” can be replaced with each other, which can be interpreted as receiving from other subjects, acquiring from protocols, obtaining from higher layers, obtaining by processing by itself, autonomously implementing, and the like.

[0363] In some embodiments, the terms “transmit”, “emit”, “report”, “issue”, “transmit”, “bidirectional transmission”, “transmit and / or receive” can be replaced with each other.

[0364] In some embodiments, the terms “certain”, “preseted”, “preset”, “set”, “indicated”, “a certain”, “any”, “first” and the like can be replaced with each other, “certain A”, “preset A”, “preset A”, “set A”, “indicated A”, “a certain A”, “any A”, “first A” can be interpreted as A specified in advance in protocols and the like, can be interpreted as A obtained by setting, configuring, or indicating, and the like, can be interpreted as certain A, a certain A, any A, or first A, and the like, but are not limited thereto.

[0365] In some embodiments, the determining or judging can be performed by a value represented by 1 bit (0 or 1), or a true or false value (Boolean value) represented by true or false, or a comparison of numerical values (for example, a comparison with a predetermined value), but is not limited thereto.

[0366] In some embodiments, “not expecting to receive” can be interpreted as not receiving on the time domain resource and / or the frequency domain resource, or as not performing subsequent processing on the data, etc. after receiving the data, etc.; “not expecting to send” can be interpreted as not sending, or as sending but not expecting the receiver to respond to the content of the sending.

[0367] The communication method related to the embodiments of the present disclosure can include at least one of steps S2101-S2107. For example, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, steps S2101+S2102 can be implemented as an independent embodiment, steps S2103+S2104 can be implemented as an independent embodiment, steps S2101+S2102+S2104 can be implemented as an independent embodiment, steps S2103+S2104+S2105 can be implemented as an independent embodiment, but are not limited thereto.

[0368] In some embodiments, steps S2101 and S2103-S2107 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0369] In some embodiments, steps S2101-S2104 and S2106-S2107 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0370] In some embodiments, reference can be made to other optional implementations described before or after the description corresponding to FIG. 2A.

[0371] FIG. 2B is an interaction schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 2B, the embodiments of the present disclosure relate to a communication method, and the above method includes:

[0372] Step S2201: The network device sends fourth information to the terminal.

[0373] Optional implementations of step S2201 can be found in the optional implementations of step S2101 of FIG. 2A and other related parts in the embodiments related to FIG. 2, which will not be described here.

[0374] In step S2202, the network device determines, according to the fourth information, the power scaling factor corresponding to each spatial domain basis vector, and / or determines the power scaling factor corresponding to each layer.

[0375] The optional implementation of step S2201 can refer to the optional implementation of step S2101 in FIG. 2A and other associated parts in the embodiments related to FIG. 2, which are not described herein again.

[0376] In step S2203, the terminal sends the third information to the network device.

[0377] 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 according to the third information.

[0378] 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 domain 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 domain basis vector; and whether to adjust the power scaling factor corresponding to the first transmission layer.

[0379] For example, if the third information is used to indicate that the power scaling factor corresponding to the candidate spatial domain basis vector is adjusted, the network device can determine that the first power scaling factor includes the candidate spatial domain basis vector. If the third information is used to indicate that the power scaling factor corresponding to the first spatial domain basis vector is adjusted, the network device can determine that the first power scaling factor includes the first spatial domain basis vector.

[0380] In some embodiments, the third information is also used to indicate an adjustment value corresponding to the first power scaling factor. Optionally, the adjustment value can be predefined or determined by the terminal.

[0381] For example, if the third information indicates that the network device adjusts the power scaling factor corresponding to the candidate spatial domain basis vector, the network device can determine that the first power scaling factor includes the power scaling factor corresponding to the candidate spatial domain basis vector. Further, the network device can also adjust the power scaling factor corresponding to the candidate spatial domain basis vector to the adjustment value indicated by the third information.

[0382] In some embodiments, step S2203 is optional, and the network device can determine the first power scaling factor and / or the adjustment value corresponding to the first power scaling factor by itself.

[0383] In step S2204, the network device determines the first power scaling factor.

[0384] In some embodiments, the first power scaling factor includes at least one of the following:

[0385] 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 value;

[0386] a power scaling factor corresponding to the first spatial basis vector, the first spatial basis vector being an optimal spatial basis vector among the candidate spatial basis vectors;

[0387] a power scaling factor corresponding to the candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial basis vector;

[0388] a power scaling factor corresponding to the first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

[0389] In some embodiments, the terminal can traverse all the candidate spatial basis vectors, and determine, based on the received power, a 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 can traverse all the candidate layers, and determine, based on the received power, a transmission layer with the largest received power as the strongest transmission layer, and report the strongest transmission layer to the network device.

[0390] It is worth noting that the number of the candidate spatial basis vectors, the first spatial basis vector, the candidate transmission layers, and the first transmission layer are not limited in the embodiments of the present disclosure.

[0391] For example, the number of the candidate spatial basis vectors can be one or more. The number of the candidate transmission layers can be greater than or equal to the number of the candidate spatial basis vectors, for example, multiple candidate transmission layers can use the same candidate spatial basis vector, and the number of transmission layers corresponding to one candidate spatial basis vector can be greater than or equal to 1. The number of the first spatial basis vector or the first transmission layer can also be one or more, for example, the received 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.

[0392] In some embodiments, the spatial basis vector used by the first transmission layer can be the first spatial basis vector. That is, the spatial basis vector used by the strongest layer among the candidate layers can be the optimal spatial basis vector.

[0393] In some embodiments, the first threshold value can be or, Optionally, the first threshold value can also be any other predefined value, and the embodiments of the present disclosure do not limit the value of the first threshold value. Wherein, v represents the rank corresponding to the MIMO transmission, and r represents the number of transmission layers corresponding to the spatial basis vector.

[0394] It can be understood that the corresponding first threshold value can be different for each spatial domain basis vector or each transmission layer. For example, for a certain spatial domain basis vector, if only one transmission layer uses the spatial domain basis vector, the first threshold value corresponding to the spatial domain basis vector and the transmission layer can be If multiple transmission layers use the spatial domain basis vector, the first threshold value corresponding to the spatial domain basis vector and each transmission layer using the spatial domain basis vector can be P represents the number of transmission layers.

[0395] In some embodiments, the amplitude scaling factor corresponding to the candidate spatial domain basis vector is greater than or equal to the root mean square of the first threshold value. For example, the first threshold value is The candidate spatial domain basis vector can be a spatial domain basis vector whose corresponding amplitude scaling factor is less than or equal to of the spatial domain basis vectors used by the network device.

[0396] In some embodiments, the candidate spatial domain basis vector can also be referred to as an unconstrained spatial domain basis vector. Alternatively, the candidate spatial domain basis vector can include a spatial domain basis vector whose corresponding amplitude scaling factor is not configured by the network side. For example, the first threshold value is For a spatial domain basis vector whose amplitude scaling factor is not configured, the corresponding power scaling factor can be At this time, the spatial domain basis vector can be determined as the candidate spatial domain basis vector.

[0397] In some embodiments, the candidate spatial domain basis vector corresponds to a first codeword, and the first codeword is one or more of the codewords used in the MIMO transmission. That is, the network device can adjust the power scaling factor corresponding to the spatial domain basis vector (or transmission layer) corresponding to all or part of the codewords.

[0398] In other words, multiple (such as 2) codewords can be used for transmission in the MIMO transmission (for example, when the transmission rank is greater than 4), and when adjusting the power, the power scaling factor corresponding to the spatial domain basis vector (or transmission layer) corresponding to the selected one or more codewords (first codeword) can be adjusted.

[0399] Alternatively, the first codeword can be determined by the network device itself, or can be indicated by the terminal, and the embodiments of the present disclosure do not limit this.

[0400] It can be understood that when the candidate spatial domain basis vector corresponds to the first codeword, the codeword corresponding to the candidate transmission layer also corresponds to the first codeword.

[0401] In some embodiments, the network device can 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 can refer to the associated part in step S2203, which is not described herein.

[0402] In some embodiments, the network device can determine the first power scaling factor according to a predefined strategy.

[0403] For example, if the network device determines in step S2202 that the normalized power corresponding to all the spatial basis vectors is not equal to 1, the network device can determine the first power scaling factor according to a predefined strategy to include 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 the first power scaling factor according to a predefined strategy to include the first spatial basis vector, that is, adjust the power scaling factor corresponding to the first spatial basis vector.

[0404] In some embodiments, the terminal and the network device can also determine the first power scaling factor through negotiation. Alternatively, the terminal and the network device can also determine the adjustment value of the first power scaling factor through negotiation. For example, the terminal and the network device negotiate to determine the adjusted power scaling factor corresponding to each spatial basis vector, and / or the adjusted power scaling factor corresponding to each transmission layer.

[0405] In some embodiments, after the network device determines the first power scaling factor, the network device performs step S2205 and / or step S2206.

[0406] In step S2205, the network device adjusts the first power scaling factor to obtain the adjusted power scaling factor corresponding to each spatial basis vector, and / or the adjusted power scaling factor corresponding to each transmission layer.

[0407] In some embodiments, the network device can adjust the first power scaling factor according to the third information. Alternatively, the adjustment value of the first power scaling factor can be determined according to the third information.

[0408] In some embodiments, the network device can also adjust the first power scaling factor according to a predefined strategy.

[0409] In some embodiments, the terminal can also adjust the first power scaling factor according to a predefined strategy.

[0410] In some embodiments, after adjusting the first power scaling factor, at least one of the following conditions is met:

[0411] The sum of the normalized power corresponding to all the adjusted spatial basis vectors is less than or equal to 1;

[0412] the sum of the normalized powers corresponding to all the adjusted transmission layers is less than or equal to 1;

[0413] the power scaling factor corresponding to each adjusted spatial basis vector is less than or equal to the square of the corresponding amplitude scaling factor.

[0414] Optionally, the sum of the normalized powers corresponding to all the adjusted spatial basis vectors is equal to 1. Optionally, the sum of the normalized powers corresponding to all the adjusted transmission layers is equal to 1.

[0415] 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 can be further adjusted to be equal to the square of the amplitude scaling factor configured for the spatial basis vector.

[0416] For example, with reference to the optional implementation described below, if the power scaling factor corresponding to the first spatial basis vector is adjusted to be and it is found that the corresponding power scaling factor is adjusted to be greater than s 2 then the power scaling factor corresponding to the first spatial basis vector can be adjusted to be s 2 , where s represents the amplitude scaling factor configured by the network device for the first spatial basis vector.

[0417] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial basis vector, or a candidate transmission layer;

[0418] adjusting the first power scaling factor comprises:

[0419] adjusting the power scaling factor corresponding to each candidate spatial basis vector, or the power scaling factor corresponding to each candidate transmission layer, to be

[0420] where N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vectors.

[0421] the power scaling factor corresponding to the second spatial basis vector is less than the first threshold.

[0422] It can be understood that the second spatial basis vector can be a spatial basis vector other than the candidate spatial basis vectors. 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 can be referred to as a constrained spatial basis vector.

[0423] That is, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted by the sum of the normalized powers corresponding to all the spatial basis vectors or all the transmission layers, and then the power scaling factor corresponding to each spatial basis vector or each transmission layer is obtained. The total power can be normalized total power, that is, the value of the total power can be 1.

[0424] In some embodiments, the first power scaling factor includes a power scaling factor corresponding to the first spatial basis vector or the first transmission layer; and adjusting the first power scaling factor includes:

[0425] adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer to or,

[0426] wherein N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vectors, J represents the number of the third spatial basis vectors, r j represents the number of transmission layers corresponding to the jth spatial basis vector in the third spatial basis vectors, X represents the number of transmission layers corresponding to the first spatial basis vector, and X is greater than or equal to 1.

[0427] The power scaling factor corresponding to the second spatial basis vector is less than the first threshold value, and the third spatial basis vector is a spatial basis vector in the candidate spatial basis vectors except the first spatial basis vector.

[0428] That is, when adjusting the power scaling factor corresponding to the first spatial basis vector or the first transmission layer, the total power can be subtracted by the sum of the normalized powers corresponding to all the spatial basis vectors or all the transmission layers, and then the power scaling factor corresponding to each spatial basis vector or each transmission layer is obtained. The total power can be normalized total power, that is, the value of the total power can be 1.

[0429] Optionally, the power scaling factor corresponding to the first spatial basis vector or the first transmission layer can be adjusted to or, wherein M represents the number of spatial basis vectors except 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 in the spatial basis vectors, s m represents the amplitude scaling factor corresponding to the mth spatial basis vector in the spatial basis vectors.

[0430] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial domain basis vector or a candidate transmission layer;

[0431] adjusting the first power scaling factor comprises:

[0432] determining that a power scaling factor corresponding to each spatial domain basis vector or each transmission layer is greater than or equal to a first threshold value, and adjusting the power scaling factor corresponding to each spatial domain basis vector or each transmission layer to the first threshold value.

[0433] That is, when the power scaling factor corresponding to all spatial domain basis vectors used in the MIMO transmission is greater than the first threshold value, the power scaling factor corresponding to each spatial domain basis vector can be determined as the first threshold value, or when the power scaling factor corresponding to all transmission layers used in the MIMO transmission is greater than the first threshold value, the power scaling factor corresponding to each transmission layer can be determined as the first threshold value.

[0434] In some embodiments, the network device can configure amplitude scaling factors for only part of the spatial domain basis vectors, the candidate spatial domain basis vector can comprise a spatial domain basis vector for which no amplitude scaling factor is configured, and the candidate transmission layer comprises a transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured. When adjusting the first power scaling factor, only the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate spatial domain basis vectors can be adjusted, or only the transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate transmission layers can be adjusted. Optionally, the first spatial domain basis vector is an optimal spatial domain basis vector among the spatial domain basis vectors for which no amplitude scaling factor is configured, and the first transmission layer is a strongest transmission layer among the transmission layers using the spatial domain basis vector for which no amplitude scaling factor is configured.

[0435] Optionally, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial domain basis vector or a candidate transmission layer, and adjusting the first power scaling factor comprises:

[0436] adjusting a power scaling factor corresponding to each first candidate basis vector or a power scaling factor corresponding to each first candidate transmission layer to

[0437] wherein the first candidate basis vector is a spatial domain basis vector for which no amplitude scaling factor is configured among the candidate spatial domain basis vectors, the first candidate transmission layer is a transmission layer using the spatial domain basis vector for which no amplitude scaling factor is configured among the candidate transmission layers, I represents a spatial domain basis vector for which an amplitude scaling factor is configured, and r I represents a number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors for which an amplitude scaling factor is configured, and s I represents a number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors for which an amplitude scaling factor is configured.

[0438] Optionally, the first power scaling factor comprises a first spatial domain basis vector, or a power scaling factor corresponding to a first transmission layer, and adjusting the first power scaling factor comprises:

[0439] adjusting the power scaling factor corresponding to each first spatial domain basis vector, or the power scaling factor corresponding to each first transmission layer, to or, wherein I represents a spatial domain basis vector configured with an amplitude scaling factor, r I denotes the number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors configured with an amplitude scaling factor, s I denotes the number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors configured with an amplitude scaling factor, Q represents a spatial domain basis vector among the first candidate basis vectors except for the first spatial domain basis vector, r q denotes the number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors configured with an amplitude scaling factor, Q represents a spatial domain basis vector among the first candidate basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer), s q denotes the number of transmission layers corresponding to the i-th spatial domain basis vector among the spatial domain basis vectors configured with an amplitude scaling factor, Q represents a spatial domain basis vector among the first candidate basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer);

[0440] or, adjusting the first spatial domain basis vector or the power scaling factor corresponding to the first transmission layer to or, wherein M represents the number of spatial domain basis vectors except for the first spatial domain basis vector (or the spatial domain basis vector corresponding to the first transmission layer), r m denotes the number of transmission layers corresponding to the m-th spatial domain basis vector among the spatial domain basis vectors, s m denotes the amplitude scaling factor corresponding to the m-th spatial domain basis vector among the spatial domain basis vectors.

[0441] 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 domain basis vector, or the power scaling factor corresponding to each transmission layer, which it finally uses.

[0442] In some embodiments, the network device performs step S2206 after adjusting the first power scaling factor.

[0443] In step S2206, the network device sends the second information to the terminal.

[0444] In some embodiments, the second information is used to indicate the spatial domain basis vector or the transmission layer whose power scaling factor is adjusted, and / or the adjusted power scaling factor.

[0445] In some embodiments, the second information comprises at least one of: a power scaling factor corresponding to each adjusted spatial domain basis vector; a power scaling factor corresponding to each adjusted transmission layer; a power scaling factor corresponding to each adjusted candidate spatial domain basis vector; the first spatial domain basis vector; a power scaling factor corresponding to the adjusted first spatial domain basis vector; a power scaling factor corresponding to each adjusted candidate transmission layer; the first transmission layer; a power scaling factor corresponding to the adjusted first transmission layer.

[0446] In some embodiments, the content of the second information can 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 domain basis vector, the second information can comprise the power scaling factor corresponding to each adjusted candidate spatial domain basis vector.

[0447] In some embodiments, the second information is used by the terminal to determine the first information.

[0448] In some embodiments, the terminal receives the second information sent by the network device. Optionally, the terminal performs step S2207 in response to receiving the second information sent by the network device.

[0449] In some embodiments, the second information can be referred to as “power indication information”, “power adjustment information”, “power reporting”, etc., and the name of the embodiment of the present disclosure is not limited.

[0450] In some embodiments, the network device can send the second information by at least one of: RRC signaling, MAC-CE, or DCI signaling.

[0451] In step S2207, the terminal determines the first information according to the second information.

[0452] In some embodiments, the terminal determines the power scaling factor corresponding to each adjusted spatial domain basis vector and / or the power scaling factor corresponding to each adjusted transmission layer according to the content indicated by the second information.

[0453] In some embodiments, the terminal can determine the power scaling factor corresponding to each spatial domain basis vector and / or each transmission layer according to the amplitude scaling factor corresponding to each spatial domain basis vector configured by the network device for the terminal and the second information.

[0454] In the embodiments of the present disclosure, the adjustment is mainly made to the power scaling factor, and it is easy to understand that the adjustment made to the amplitude scaling factor is equivalent to the adjustment made to the power scaling factor to some extent, and therefore, the adjustment made to the power scaling factor in the embodiments of the present disclosure can be replaced by the adjustment made to the amplitude scaling factor, and the adjustment value can be the root mean square of the adjustment value of the power scaling factor.

[0455] The communication method related to the embodiments of the present disclosure can comprise at least one of steps S2201-S2207. For example, step S2204 can be implemented as an independent embodiment, step S2205 can be implemented as an independent embodiment, steps S2201+S2202 can be implemented as an independent embodiment, steps S2203+S2204 can be implemented as an independent embodiment, steps S2201+S2202+S2204 can be implemented as an independent embodiment, steps S2203+S2204+S2205 can be implemented as an independent embodiment, but the present disclosure is not limited thereto.

[0456] In some embodiments, steps S2201 and S2203-S2207 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0457] In some embodiments, steps S2201-S2204 and S2206-S2207 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0458] In some embodiments, other optional implementations can be found in the description before or after the corresponding description of FIG. 2B.

[0459] FIG. 3A is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3A, the embodiments of the present disclosure relate to a communication method (terminal side), and the above method comprises:

[0460] Step S3101: obtaining fourth information.

[0461] Optional implementations of step S3101 can be found in the optional implementations of step S2101 of FIG. 2A and other related parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0462] Step S3102: determining, according to the fourth information, a power scaling factor corresponding to each spatial domain basis vector, and / or determining a power scaling factor corresponding to each transmission layer.

[0463] Optional implementations of step S3102 can be found in the optional implementations of step S2102 of FIG. 2A and other related parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0464] Step S3103: obtaining third information.

[0465] Optional implementations of step S3103 can be found in the optional implementations of step S2103 of FIG. 2A and other related parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0466] Step S3104: determining the first power scaling factor.

[0467] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in FIG. 2A, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0468] Step S3105: adjusting the first power scaling factor to obtain an adjusted power scaling factor corresponding to each spatial domain basis vector, and / or an adjusted power scaling factor corresponding to each transmission layer.

[0469] The optional implementation of step S3105 can refer to the optional implementation of step S2105 in FIG. 2A, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0470] Step S3106: sending the second information.

[0471] The optional implementation of step S3106 can refer to the optional implementation of step S2106 in FIG. 2A, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B, which will not be repeated here.

[0472] In some embodiments, the second information can be used by the network device to determine the first information.

[0473] The communication method related to the embodiments of the present disclosure can include at least one of steps S3101-S3106. For example, step S3104 can be implemented as an independent embodiment, step S3105 can be implemented as an independent embodiment, steps S3101+S3102 can be implemented as an independent embodiment, steps S3103+S3104 can be implemented as an independent embodiment, steps S3101+S3102+S3104 can be implemented as an independent embodiment, steps S3103+S3104+S3105 can be implemented as an independent embodiment, but not limited thereto.

[0474] In some embodiments, steps S3101 and steps S3103-S3106 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0475] In some embodiments, steps S3101-S3104 and step S3106 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0476] FIG. 3B is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3B, the embodiment of the present disclosure relates to a communication method (terminal side), and the method comprises the following steps.

[0477] In step S3201, fourth information is acquired.

[0478] The optional implementation of step S3201 can refer to the optional implementation of step S2101 in FIG. 2A, the optional implementation of step S3101 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B and FIG. 3A, which will not be repeated here.

[0479] In step S3202, a power scaling factor corresponding to each spatial basis vector is determined according to the fourth information, and / or a power scaling factor corresponding to each transmission layer is determined.

[0480] The optional implementation of step S3202 can refer to the optional implementation of step S2102 in FIG. 2A, the optional implementation of step S3102 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B and FIG. 3A, which will not be repeated here.

[0481] It can be understood that the terminal can directly determine the first information according to the fourth information in the case that it is determined that the power scaling factor is not needed.

[0482] FIG. 3C is a flow diagram illustrating a communication method according to an embodiment of the present disclosure. As shown in FIG. 3C, the embodiment of the present disclosure relates to a communication method (terminal side), and the method comprises the following steps.

[0483] In step S3301, third information is acquired.

[0484] The optional implementation of step S3301 can refer to the optional implementation of step S2103 in FIG. 2A, the optional implementation of step S3103 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 3A and FIG. 3B, which will not be repeated here.

[0485] In step S3302, a first power scaling factor is determined.

[0486] The optional implementation of step S3302 can refer to the optional implementation of step S2104 in FIG. 2A, the optional implementation of step S3104 in FIG. 3A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 3A and FIG. 3B, which will not be repeated here.

[0487] In step S3303, the first power scaling factor is adjusted 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.

[0488] The optional implementation of step S3303 can refer to the optional implementation of step S2105 in FIG. 2A, step S3105 in FIG. 3A, and other associated parts in the embodiments described above with reference to FIG. 2A, FIG. 2B, FIG. 3A, and FIG. 3B, which are not described herein again.

[0489] In some embodiments, steps S3301 to S3302 can also be combined with steps S3101 to S3102 and / or step S3106 in FIG. 3A.

[0490] FIG. 3D is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3D, the embodiments of the present disclosure relate to a communication method (terminal side), and the above method comprises the following steps:

[0491] In step S3401, a first power scaling factor is determined.

[0492] The optional implementation of step S3401 can refer to the optional implementation of step S2104 in FIG. 2A, step S3104 in FIG. 3A, and other associated parts in the embodiments described above with reference to FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, and FIG. 3C, which are not described herein again.

[0493] In step S3402, the first power scaling factor is adjusted 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.

[0494] The optional implementation of step S3402 can refer to the optional implementation of step S2105 in FIG. 2A, step S3105 in FIG. 3A, and other associated parts in the embodiments described above with reference to FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, and FIG. 3C, which are not described herein again.

[0495] In some embodiments, steps S3401 to S3402 can also be combined with steps S3101 to S3102 and / or step S3106 in FIG. 3A.

[0496] FIG. 3E is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3E, the embodiments of the present disclosure relate to a communication method (terminal side), and the above method comprises the following steps:

[0497] In step S3501, the first power scaling factor is adjusted 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.

[0498] The optional implementation of step S3501 can be referred to the optional implementation of step S2105 in FIG. 2A, step S3105 in FIG. 3A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, FIG. 3C, FIG. 3D, which will not be repeated here.

[0499] Step S3502, sending the second information.

[0500] The optional implementation of step S3502 can be referred to the optional implementation of step S2106 in FIG. 2A, step S3106 in FIG. 3A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, FIG. 3C, FIG. 3D, which will not be repeated here.

[0501] FIG. 3F is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3F, the embodiment of the present disclosure relates to a communication method (terminal side), and the above method comprises:

[0502] Step S3601, obtaining the second information.

[0503] The optional implementation of step S3601 can be referred to the optional implementation of step S2106 in FIG. 2B, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, FIG. 3C, FIG. 3D, FIG. 3E, which will not be repeated here.

[0504] Step S3602, determining the first information according to the second information.

[0505] The optional implementation of step S3602 can be referred to the optional implementation of step S2107 in FIG. 2B, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, FIG. 3C, FIG. 3D, FIG. 3E, which will not be repeated here.

[0506] In some embodiments, the determination of the content included in the second information in step S3601 can be referred to the optional implementation of steps S2203 to S2205 in FIG. 2B.

[0507] FIG. 3G is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 3G, the embodiment of the present disclosure relates to a communication method (terminal side), and the above method comprises:

[0508] Step S3701, determining the first information.

[0509] The optional implementation of step S3701 is the optional implementation of step S2101 to step S2102 or step S2101 to step S2105 in FIG. 2A, step S2107 in FIG. 2B, step S3101 to step S3102 or step S3101 to step S3105 in FIG. 3A, the optional implementation of step S3602 in FIG. 3F, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 3A, FIG. 3B, FIG. 3C, FIG. 3D, FIG. 3E, and FIG. 3F, which are not described herein.

[0510] In some embodiments, the first information comprises at least one of:

[0511] a power scaling factor corresponding to each spatial basis vector;

[0512] a power scaling factor corresponding to each transmission layer.

[0513] Optionally, each transmission layer corresponds to one data stream in the MIMO transmission. Optionally, the spatial basis vectors are used for beamforming in the MIMO transmission.

[0514] In some embodiments, each spatial basis vector is configured with an amplitude scaling factor, and determining the first information comprises:

[0515] determining, according to the amplitude scaling factor corresponding to each spatial basis vector, a power scaling factor corresponding to each spatial basis vector; and / or,

[0516] determining, according to the amplitude scaling factor corresponding to each spatial basis vector, a power scaling factor corresponding to each transmission layer.

[0517] In some embodiments, determining the first information comprises:

[0518] 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;

[0519] wherein, after adjusting the first power scaling factor, at least one of the following is satisfied:

[0520] a sum of normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0521] a sum of normalized powers corresponding to all adjusted transmission layers is less than or equal to 1;

[0522] each adjusted power scaling factor corresponding to each spatial basis vector is less than or equal to a square of the corresponding amplitude scaling factor.

[0523] In some embodiments, the first power scaling factor comprises at least one of:

[0524] a power scaling factor corresponding to each of the candidate spatial basis vectors, the power scaling factor corresponding to each of the candidate spatial basis vectors being greater than or equal to a first threshold value;

[0525] a power scaling factor corresponding to the first spatial basis vector, the first spatial basis vector being an optimal spatial basis vector among the candidate spatial basis vectors;

[0526] a power scaling factor corresponding to each of the candidate transmission layers, the candidate transmission layers being transmission layers employing the candidate spatial basis vectors;

[0527] a power scaling factor corresponding to the first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

[0528] In some embodiments, the first threshold value is any one of: 1; or

[0529] where v represents a rank corresponding to the MIMO transmission, and r represents a number of transmission layers corresponding to the spatial basis vectors.

[0530] In some embodiments, the candidate spatial basis vectors correspond to a first codeword, the first codeword being one or more codewords among codewords employed by the MIMO transmission.

[0531] In some embodiments, the method further comprises:

[0532] sending, to the network device, second information, the second information comprising at least one of:

[0533] a power scaling factor corresponding to each of the adjusted spatial basis vectors;

[0534] a power scaling factor corresponding to each of the adjusted transmission layers;

[0535] a power scaling factor corresponding to each of the adjusted candidate spatial basis vectors;

[0536] the first spatial basis vector;

[0537] a power scaling factor corresponding to the adjusted first spatial basis vector;

[0538] a power scaling factor corresponding to each of the adjusted candidate transmission layers;

[0539] the first transmission layer;

[0540] a power scaling factor corresponding to the adjusted first transmission layer.

[0541] In some embodiments, the method comprises:

[0542] receiving third information sent by the network device;

[0543] determining the first power scaling factor according to the third information;

[0544] wherein the third information is used to indicate at least one of:

[0545] whether to adjust the power scaling factor corresponding to the candidate spatial basis vector;

[0546] whether to adjust the power scaling factor corresponding to the candidate transmission layer;

[0547] whether to adjust the power scaling factor corresponding to the first spatial basis vector;

[0548] whether to adjust the power scaling factor corresponding to the first transmission layer.

[0549] In some embodiments, the method comprises:

[0550] determining the first power scaling factor in coordination with the network device.

[0551] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial basis vector, or a candidate transmission layer;

[0552] adjusting the first power scaling factor comprises:

[0553] adjusting the power scaling factor corresponding to each candidate spatial basis vector, or the power scaling factor corresponding to each candidate transmission layer, to

[0554] wherein N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s n represents the amplitude scaling factor corresponding to the nth spatial basis vector in the second spatial basis vectors;

[0555] the power scaling factor corresponding to the second spatial basis vector is less than a first threshold.

[0556] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a first spatial basis vector, or a first transmission layer;

[0557] adjusting the first power scaling factor comprises:

[0558] adjusting the power scaling factor corresponding to the first spatial basis vector, or the first transmission layer, to or,

[0559] wherein N represents the number of the second spatial basis vectors, r n represents the number of transmission layers corresponding to the nth spatial basis vector in the second spatial basis vectors, s ndenotes an amplitude scaling factor corresponding to an n th spatial domain basis vector in the second spatial domain basis vectors, J denotes a number of the third spatial domain basis vectors, and r j denotes a number of transmission layers corresponding to a j th spatial domain basis vector in the third spatial domain basis vectors, X denotes a number of transmission layers corresponding to the first spatial domain basis vectors, and X is greater than or equal to 1.

[0560] The power scaling factor corresponding to the second spatial domain basis vector is less than a first threshold value, and the third spatial domain basis vector is a spatial domain basis vector in the candidate spatial domain basis vectors except the first spatial domain basis vector.

[0561] In some embodiments, the first power scaling factor includes a candidate spatial domain basis vector, or a power scaling factor corresponding to a candidate transmission layer.

[0562] The first power scaling factor is adjusted, including:

[0563] It is determined that the power scaling factor corresponding to each spatial domain basis vector or each transmission layer is greater than or equal to a first threshold value, and the power scaling factor corresponding to each spatial domain basis vector or each transmission layer is adjusted to the first threshold value.

[0564] In some embodiments, the first information is determined, including:

[0565] The second information sent by the network device is received.

[0566] The first information is determined according to the second information.

[0567] The second information includes at least one of the following:

[0568] The power scaling factor corresponding to each adjusted spatial domain basis vector;

[0569] The power scaling factor corresponding to each adjusted transmission layer;

[0570] The power scaling factor corresponding to each adjusted candidate spatial domain basis vector;

[0571] The first spatial domain basis vector;

[0572] The power scaling factor corresponding to the adjusted first spatial domain basis vector;

[0573] The power scaling factor corresponding to each adjusted candidate transmission layer;

[0574] The first transmission layer;

[0575] The power scaling factor corresponding to the adjusted first transmission layer.

[0576] FIG. 4A is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4A, the embodiment of the present disclosure relates to a communication method (network device side), and the above method includes:

[0577] Step S4101, sending the fourth information.

[0578] The optional implementation of step S4101 can refer to the optional implementation of step S2201 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0579] Step S4102, determining the power scaling factor corresponding to each spatial basis vector and / or the power scaling factor corresponding to each transmission layer according to the fourth information.

[0580] The optional implementation of step S4102 can refer to the optional implementation of step S2202 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0581] Step S4103, obtaining the third information.

[0582] The optional implementation of step S4103 can refer to the optional implementation of step S2203 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0583] Step S4104, determining the first power scaling factor.

[0584] The optional implementation of step S4104 can refer to the optional implementation of step S2204 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0585] Step S4105, adjusting the first power scaling factor to obtain the adjusted power scaling factor corresponding to each spatial basis vector and / or the adjusted power scaling factor corresponding to each transmission layer.

[0586] The optional implementation of step S4105 can refer to the optional implementation of step S2205 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0587] Step S4106, sending the second information.

[0588] The optional implementation of step S4106 can refer to the optional implementation of step S2206 in FIG. 2B, and other associated parts in the embodiments related to FIG. 2A and FIG. 2B. Here, no longer be repeated.

[0589] In some embodiments, the second information can be used by the terminal to determine the first information.

[0590] The communication method related to the embodiments of the present disclosure can include at least one of steps S4101-S4106. For example, step S4104 can be implemented as an independent embodiment, step S4105 can be implemented as an independent embodiment, steps S4101+S4102 can be implemented as an independent embodiment, steps S4103+S4104 can be implemented as an independent embodiment, steps S4101+S4102+S4104 can be implemented as an independent embodiment, steps S4103+S4104+S4105 can be implemented as an independent embodiment, but the present disclosure is not limited thereto.

[0591] In some embodiments, step S4101 and steps S4103-S4106 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0592] In some embodiments, steps S4101-S4104 and step S4106 are optional, and one or more of these steps can be omitted or replaced in different embodiments.

[0593] FIG. 4B is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4B, the embodiments of the present disclosure relate to a communication method (network device side), and the above method includes:

[0594] Step S4201, transmitting fourth information.

[0595] The optional implementation of step S4201 can be referred to the optional implementation of step S2201 in FIG. 2B, the optional implementation of step S4101 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, and FIG. 4A, which will not be described here.

[0596] Step S4202, determining the power scaling factor corresponding to each spatial domain basis vector according to the fourth information, and / or determining the power scaling factor corresponding to each transmission layer.

[0597] The optional implementation of step S4202 can be referred to the optional implementation of step S2202 in FIG. 2B, the optional implementation of step S4102 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, and FIG. 4A, which will not be described here.

[0598] It can be understood that the network device can directly determine the first information according to the fourth information in the case of determining that the power scaling factor is not needed.

[0599] FIG. 4C is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4C, the embodiments of the present disclosure relate to a communication method (network device side), and the above method includes:

[0600] In step S4301, the third information is acquired.

[0601] The optional implementation of step S4301 can refer to the optional implementation of step S2203 in FIG. 2B, the optional implementation of step S4103 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, and FIG. 4B, which are not described here again.

[0602] In step S4302, the first power scaling factor is determined.

[0603] The optional implementation of step S4302 can refer to the optional implementation of step S2204 in FIG. 2B, the optional implementation of step S4104 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, and FIG. 4B, which are not described here again.

[0604] In step S4304, the first power scaling factor is adjusted 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.

[0605] The optional implementation of step S4304 can refer to the optional implementation of step S2205 in FIG. 2B, the optional implementation of step S4105 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, and FIG. 4B, which are not described here again.

[0606] In some embodiments, steps S4301 to S4302 can also be combined with steps S4101 to S4102 and / or step S4106 in FIG. 4A.

[0607] FIG. 4D is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4D, the embodiment of the present disclosure relates to a communication method (network device side), and the above method comprises:

[0608] In step S4401, the first power scaling factor is determined.

[0609] The optional implementation of step S4401 can refer to the optional implementation of step S2204 in FIG. 2B, the optional implementation of step S4104 in FIG. 4A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, and FIG. 4C, which are not described here again.

[0610] In step S4402, the first power scaling factor is adjusted 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.

[0611] The optional implementation of step S4402 can be referred to the optional implementation of step S2205 in FIG. 2B, the optional implementation of step S4105 in FIG. 4A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, which are not described here again.

[0612] In some embodiments, steps S4401 to S4402 can also be combined with steps S4101 to S4102 and / or step S4106 in FIG. 4A.

[0613] FIG. 4E is a flow diagram of a communication method according to some embodiments of the present disclosure. As shown in FIG. 4E, the embodiments of the present disclosure relate to a communication method (network device side), which includes the following steps:

[0614] In step S4501, the first power scaling factor is adjusted 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.

[0615] The optional implementation of step S4501 can be referred to the optional implementation of step S2205 in FIG. 2B, the optional implementation of step S4105 in FIG. 4A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, which are not described here again.

[0616] In step S4502, the second information is sent.

[0617] The optional implementation of step S4502 can be referred to the optional implementation of step S2206 in FIG. 2B, the optional implementation of step S4106 in FIG. 4A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, which are not described here again.

[0618] FIG. 4F is a flow diagram of a communication method according to some embodiments of the present disclosure. As shown in FIG. 4F, the embodiments of the present disclosure relate to a communication method (network device side), which includes the following steps:

[0619] In step S4601, the second information is obtained.

[0620] The optional implementation of step S4601 can be referred to the optional implementation of step S2106 in FIG. 2A, and other associated parts in the embodiments of FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, FIG. 4E, which are not described here again.

[0621] In step S4602, the first information is determined according to the second information.

[0622] The optional implementation of step S4602 can refer to the optional implementation of step S2107 in FIG. 2A, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, and FIG. 4E, which are not described herein again.

[0623] In some embodiments, the manner of determining the content included in the second information in step S4601 can refer to the optional implementation of steps S2103 to S2105 in FIG. 2A.

[0624] FIG. 4G is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 4G, the embodiment of the present disclosure relates to a communication method (network device side), and the above method includes the following steps:

[0625] Step S4701, determining first information.

[0626] The optional implementation of step S4701 can refer to the optional implementation of steps S2201 to S2202 or steps S2201 to S2205 in FIG. 2B, step S2107 in FIG. 2A, steps S4101 to S4102 or steps S4101 to S4105 in FIG. 4A, the optional implementation of step S4602 in FIG. 4F, and other associated parts in the embodiments related to FIG. 2A, FIG. 2B, FIG. 4A, FIG. 4B, FIG. 4C, FIG. 4D, FIG. 4E, and FIG. 4F, which are not described herein again.

[0627] In some embodiments, the first information includes at least one of the following:

[0628] A power scaling factor corresponding to each spatial basis vector used for beamforming in the MIMO transmission;

[0629] A power scaling factor corresponding to each transmission layer, each transmission layer corresponding to a data stream in the MIMO transmission.

[0630] In some embodiments, the method includes:

[0631] The fourth information is used to indicate an amplitude scaling factor corresponding to each spatial basis vector.

[0632] The amplitude scaling factor is used to determine a power scaling factor corresponding to each spatial basis vector, and / or, a power scaling factor corresponding to each transmission layer.

[0633] In some embodiments, the first information is determined by including:

[0634] The first power scaling factor is adjusted 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.

[0635] wherein the first power scaling factor is adjusted such that at least one of the following is satisfied:

[0636] a sum of normalized powers corresponding to all adjusted spatial basis vectors is less than or equal to 1;

[0637] a sum of normalized powers corresponding to all adjusted transmission layers is less than or equal to 1;

[0638] a power scaling factor corresponding to each adjusted spatial basis vector is less than or equal to a square of a corresponding amplitude scaling factor.

[0639] In some embodiments, the first power scaling factor comprises at least one of:

[0640] a power scaling factor corresponding to a candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold;

[0641] a power scaling factor corresponding to a first spatial basis vector, the first spatial basis vector being an optimal spatial basis vector among the candidate spatial basis vectors;

[0642] a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer employing a candidate spatial basis vector;

[0643] a power scaling factor corresponding to a first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

[0644] In some embodiments, the first threshold is any one of: 1; or

[0645] wherein v represents a rank corresponding to the MIMO transmission, and r represents a number of transmission layers corresponding to the spatial basis vector.

[0646] In some embodiments, the candidate spatial basis vector corresponds to a first codeword, the first codeword being one or more codewords among codewords employed by the MIMO transmission.

[0647] In some embodiments, the method further comprises:

[0648] sending, to the terminal, second information, the second information comprising at least one of:

[0649] a power scaling factor corresponding to each adjusted spatial basis vector;

[0650] a power scaling factor corresponding to each adjusted transmission layer;

[0651] a power scaling factor corresponding to each candidate spatial basis vector;

[0652] a first spatial basis vector;

[0653] a power scaling factor corresponding to the adjusted first spatial domain basis vector;

[0654] a power scaling factor corresponding to each of the adjusted candidate transmission layers;

[0655] the first transmission layer;

[0656] a power scaling factor corresponding to the adjusted first transmission layer.

[0657] In some embodiments, the method comprises:

[0658] receiving third information sent by the terminal;

[0659] determining the first power scaling factor according to the third information;

[0660] The third information is used to indicate at least one of:

[0661] whether the power scaling factor corresponding to the candidate spatial domain basis vector is adjusted;

[0662] whether the power scaling factor corresponding to the candidate transmission layer is adjusted;

[0663] whether the power scaling factor corresponding to the first spatial domain basis vector is adjusted;

[0664] whether the power scaling factor corresponding to the first transmission layer is adjusted.

[0665] In some embodiments, the method comprises:

[0666] determining the first power scaling factor in coordination with the terminal.

[0667] In some embodiments, the first power scaling factor comprises a power scaling factor corresponding to a candidate spatial domain basis vector, or a candidate transmission layer;

[0668] adjusting the first power scaling factor comprises:

[0669] adjusting a power scaling factor corresponding to each of the candidate spatial domain basis vectors, or a power scaling factor corresponding to each of the candidate transmission layers, to

[0670] wherein N represents a number of the second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an nth spatial domain basis vector in the second spatial domain basis vectors, s m represents an amplitude scaling factor corresponding to the nth spatial domain basis vector in the second spatial domain basis vectors;

[0671] the power scaling factor corresponding to the second spatial domain basis vector is less than a first threshold.

[0672] In some embodiments, the first power scaling factor comprises a first spatial domain basis vector or a first transmission layer corresponding power scaling factor.

[0673] The first power scaling factor is adjusted, comprising:

[0674] The first spatial domain basis vector or the first transmission layer corresponding power scaling factor is adjusted to Or,

[0675] wherein N represents a number of second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an n th spatial domain basis vector in the second spatial domain basis vectors, s m represents an amplitude scaling factor corresponding to the n th spatial domain basis vector in the second spatial domain basis vectors, J represents a number of third spatial domain basis vectors, r j represents a number of transmission layers corresponding to a j th spatial domain basis vector in the third spatial domain basis vectors, X represents a number of transmission layers corresponding to the first spatial domain basis vector, and X is greater than or equal to 1.

[0676] The second spatial domain basis vector corresponding power scaling factor is less than a first threshold value, and the third spatial domain basis vector is a spatial domain basis vector in the candidate spatial domain basis vectors except the first spatial domain basis vector.

[0677] In some embodiments, the first power scaling factor comprises a candidate spatial domain basis vector or a candidate transmission layer corresponding power scaling factor.

[0678] The first power scaling factor is adjusted, comprising:

[0679] It is determined that each spatial domain basis vector or each transmission layer corresponding power scaling factor is greater than or equal to a first threshold value, and each spatial domain basis vector or each transmission layer corresponding power scaling factor is adjusted to the first threshold value.

[0680] In some embodiments, the first information is determined, comprising:

[0681] The second information sent by the terminal is received.

[0682] The first information is determined according to the second information.

[0683] The second information comprises at least one of the following:

[0684] The adjusted each spatial domain basis vector corresponding power scaling factor;

[0685] The adjusted each transmission layer corresponding power scaling factor;

[0686] The adjusted each candidate spatial domain basis vector corresponding power scaling factor;

[0687] the first spatial domain basis vector;

[0688] the adjusted first spatial domain basis vector corresponds to a power scaling factor;

[0689] each adjusted candidate transmission layer corresponds to a power scaling factor;

[0690] the first transmission layer;

[0691] the adjusted first transmission layer corresponds to a power scaling factor.

[0692] FIG. 5 is a flow diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG. 5, the embodiment of the present disclosure relates to a communication method, and the method comprises:

[0693] In step S5101, the UE and / or the gNB adjusts the power scaling factor corresponding to the unconstrained spatial domain basis vector.

[0694] In some embodiments, the gNB adjusts the power scaling factor of the ith SD basis vector configuration The total power is normalized to 1.

[0695] In some embodiments, the UE reports an indication message to the gNB to indicate the power scaling factor corresponding to each SD basis vector or each layer without constraint.

[0696] Optionally, the UE adjusts the power scaling factor corresponding to the strongest layer or the optimal SD basis vector, and the UE indicates the strongest layer or the optimal SD basis vector in addition to the power scaling factor. The optimal SD basis vector refers to the SD basis vector corresponding to the maximum received power after traversing all candidate unconstrained SD basis vectors.

[0697] Optionally, the UE adjusts the power scaling factor corresponding to each SD basis vector, and the UE determines the power scaling factor of each SD basis vector and indicates the power scaling factor to the gNB.

[0698] 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.

[0699] Optionally, if the power scaling factor corresponding to each SD basis vector or each layer is adjusted, the power scaling factor corresponding to the strongest layer or the optimal SD basis vector is adjusted, or the power scaling factor corresponding to each SD basis vector is adjusted.

[0700] In some embodiments, the power scaling factor corresponding to each beam or each layer is predefined according to the negotiation between the UE and the gNB.

[0701] Optionally, the adjusted power scaling factor corresponding to the strongest layer or the optimal SD basis vector is predefined, or the adjusted power scaling factor corresponding to each unconstrained SD basis vector is predefined.

[0702] In some embodiments, the power scaling factor of each layer can be determined according to one or more of the following: the UE reporting indication, the network sending signaling indication, or the negotiation predefined.

[0703] In some embodiments, the gNB configures the amplitude scaling factor for each SD basis vector selected by the UE, and the power corresponding to each SD basis vector or each layer can be determined according to the following definition method:

[0704] Method one: the power scaling factor corresponding to each SD basis vector or each layer is determined by the gNB configuring the amplitude scaling factor of the corresponding SD basis vector. That is, no adjustment is made to the power.

[0705] Method two: if the sum of the power corresponding to each configured SD basis vector is greater than the total power 1, no adjustment is made to the power of the SD basis vector whose configured power is less than , while the power corresponding to the SD basis vector whose configured power is greater than is adjusted, and the adjusted power value is or or If the SD basis vector corresponds to X layers, the adjustment value of the power is or or That is, the total power is reduced by the power corresponding to the constrained SD basis vector, and then the power corresponding to the unconstrained SD basis vector is averaged.

[0706] In some embodiments, the adjusted power scaling factor corresponding to the strongest layer or the optimal SD basis vector can be adjusted to or, i.e. total power minus the power of the strongest layer of constraints or the power of the other transmission layers or SD basis vectors of the optimal SD basis vector.

[0707] wherein the meaning of each parameter in the above formula can be referred to the description in FIG. 2A or FIG. 2B, which will not be repeated here.

[0708] It can be understood that, in the above embodiment, only the adjustment of power is described, and if the amplitude is adjusted, the corresponding amplitude scaling factor is the root mean square of the power scaling factor.

[0709] The embodiments of the present disclosure also provide the following exemplary embodiments.

[0710] In embodiment 1, it is assumed that the gNB configures the number of antenna ports N1 = 8 and N2 = 4, and the spatial domain basis vectors (SD basis vectors) available for the UE to select are N1*N2*O1*O2 = 512, where O1 and O2 equal to 4 respectively represent the overuse factors of the horizontal and vertical SD basis vectors. The gNB also configures X1 = 4 and X2 = 2 for amplitude constraint on each group containing X1*X2 = 8 SD basis vectors, and 3 bits are configured for each group of SD basis vectors to indicate the amplitude constraint factor of the corresponding group. X1 and X2 respectively represent the number of horizontal and vertical SD basis vectors. When the amplitude value indicated by the configured 3 bits is 1, it means that the group of SD basis vectors is not constrained.

[0711] It is assumed that v = 3, the first layer and the third layer use the same SD basis vectors, which are denoted as the first SD basis vector, and the second layer uses the SD basis vectors, which are denoted as the second SD basis vector. It is assumed that the two SD basis vectors selected by the UE are from different groups of SD basis vectors, and the first SD basis vector is configured with an amplitude constraint of The sum of the powers corresponding to the first layer and the third layer is 1 / 2, and then the power scaling factor corresponding to the second layer can be adjusted to 1-1 / 2 = 1 / 2, and if it is 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.

[0712] In some embodiments, the UE can calculate the Channel Quality Indicator (CQI) based on the adjusted power or the unadjusted power. In order to ensure the consistency of the behavior of the UE and the gNB to perform power adjustment, the gNB can indicate whether to perform power adjustment by Radio Resource Control (RRC) signaling, Media Access Control Control Element (MAC-CE) or Downlink Control Information (DCI) signaling, or the UE reports or the UE and the gNB negotiate the consistent way. If the power adjustment is performed, the adjustment is performed according to the same method as described above to ensure the consistency of the UE and the gNB to perform power adjustment. If the UE calculates the CQI after adjusting the power as described above, the gNB also needs to perform the same power adjustment.

[0713] Assuming v = 5, the codebook structure is as follows:

[0714] Referring to the above formula, the first layer and the second layer use the same SD basis vectors, denoted as the first SD basis vector, the third layer and the fourth layer use the same SD basis vectors, denoted as the second SD basis vector, and the fifth layer uses the same SD basis vectors, denoted as the third SD basis vector. Assuming that the three SD basis vectors come from three SD basis vector groups, respectively, 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 factor of the second SD basis vector is 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 And because the first SD basis vector corresponds to two layers, the transmission power scaling factor of each layer is

[0715] Among them, it is worth mentioning 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 the 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 SD basis vector is 27 / 80.

[0716] If the remaining power is all given 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 is the power scaling factor of the strongest layer, that is, the first layer.

[0717] In embodiment 2, assuming the same conditions as in embodiment 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 each corresponding power is less than 1 / 3. In order to obtain better beam constraints and avoid interference to other wireless systems, no power adjustment can be made in this case. If the gNB configures the power scaling factors of the above two SD basis vectors as 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, the power of the two transmission layers corresponding to the first SD basis vector can be adjusted, that is, the remaining 3 / 4 power is evenly divided into the two layers, and the power adjustment factor of the two layers is 3 / 8. The power scaling factor of the first SD basis vector is 3 / 4. Further, if the power of each layer is limited to not more than 1 / 3, since 3 / 8>1 / 3, the power scaling factor of the SD basis vector can be further adjusted to 1 / 3, and the power scaling factor of each layer is adjusted to 1 / 6.

[0718] The above is to realize the adjustment of the power of each layer according to a certain agreed method. Correspondingly, the gNB will also use the corresponding power transmission to the corresponding layer. The power scaling factor of each layer can also be determined by the UE and then separately reported 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. Alternatively, the scaling factor of each layer is jointly determined according to one or more of the UE reporting indication, gNB signaling indication, or pre-defined negotiation.

[0719] In the embodiments of the present disclosure, part or all of the steps, and optional implementation manners thereof, can be combined with part or all of the steps in other embodiments, or combined with optional implementation manners of other embodiments.

[0720] The embodiments of the present disclosure also propose a device for implementing any of the above methods, for example, a device comprising units or modules for implementing the steps performed by the terminal in any of the above methods. For another example, another device is proposed, comprising units or modules for implementing the steps performed by the network equipment (such as access network equipment, core network function node, core network equipment, etc.) in any of the above methods.

[0721] It should be understood that the division of each unit or module in the above device is only a logical function division, and all or part of them can be integrated into one physical entity, or can be physically separated. In addition, the units or modules in the device can be implemented in the form of processor calling software: for example, the device includes a processor, the processor is connected with a memory, the memory stores instructions, and the processor calls the instructions stored in the memory to implement any of the above methods or the functions of each unit or module of the device, wherein the processor is, for example, a general processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory in the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuit, and the functions of part or all of the units or modules can be implemented by designing the hardware circuit, and the hardware circuit can be understood as one or more processors; for example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC), and the functions of part or all of the units or modules are implemented by designing the logical relationship of elements in the circuit; for another example, in another implementation, the hardware circuit is a programmable logic device (PLD), and taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by a configuration file, so as to implement the functions of part or all of the units or modules. All units or modules of the above device can be implemented in the form of processor calling software, or all units or modules can be implemented in the form of hardware circuit, or part of the units or modules can be implemented in the form of processor calling software, and the remaining part can be implemented in the form of hardware circuit.

[0722] In the embodiments of the present disclosure, the processor is a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading and running capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), a digital signal processor (DSP), or the like. In another implementation, the processor can implement certain functions through a logical relationship of hardware circuit, and the logical relationship of the hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In the reconfigurable hardware circuit, the processor loads a configuration document to implement the configuration of the hardware circuit. It can be understood that the processor loads instructions to implement the functions of the above part or all units or modules. In addition, the hardware circuit can also be designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), or the like.

[0723] FIG. 6A is a structural schematic diagram of a terminal according to an embodiment of the present disclosure. As shown in FIG. 6A, the terminal 6100 can include at least one of a transceiver module 6101, a processing module 6102, and the like. In some embodiments, the processing module 6102 is configured to determine first information, the first information including at least one of: a power scaling factor corresponding to each spatial basis vector, the spatial basis vector being used for beamforming in MIMO transmission; and a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to one data stream in MIMO transmission. Optionally, the transceiver module 6101 is configured to perform at least one of the communication steps, such as transmitting and / or receiving, performed by the terminal in any of the above methods, details of which are not repeated here. Optionally, the processing module 6102 is configured to perform at least one of the other steps performed by the terminal in any of the above methods, details of which are not repeated here.

[0724] FIG. 6B is a structural diagram of a network device according to an embodiment of the present disclosure. As shown in FIG. 6B, the network device 6200 can include at least one of a transceiver module 6201, a processing module 6202, and the like. In some embodiments, the processing module 6202 is configured to determine first information, the first information including at least one of: a power scaling factor corresponding to each spatial basis vector used for beamforming in MIMO transmission; or a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to one data stream in MIMO transmission. Optionally, the transceiver module 6201 is configured to perform at least one of the communication steps, such as receiving and / or transmitting, of the network device in any of the above methods, which are not described herein again. Optionally, the processing module 6202 is configured to perform at least one of the other steps of the network device in any of the above methods, which are not described herein again.

[0725] In some embodiments, the transceiver module can include a transmitting module and / or a receiving module, which can be separate or integrated together. Optionally, the transceiver module can be replaced by a transceiver.

[0726] In some embodiments, the processing module can be one module or include multiple sub-modules. Optionally, the multiple sub-modules perform all or part of the steps required to be performed by the processing module. Optionally, the processing module can be replaced by a processor.

[0727] FIG. 7A is a structural diagram of a communication device 7100 according to an embodiment of the present disclosure. The communication device 7100 can be a network device (such as an access network device, a core network device, and the like), a terminal (such as a user equipment, and the like), a chip, a chip system, or a processor supporting the network device to implement any of the above methods, or a chip, a chip system, or a processor supporting the terminal to implement any of the above methods. The communication device 7100 can be used to implement the methods described in the above method embodiments, which can be referred to the descriptions in the above method embodiments.

[0728] As shown in FIG. 7A, the communication device 7100 includes one or more processors 7101. The processor 7101 can be a general purpose processor or a special purpose processor, for example, a baseband processor or a central processing unit. The baseband processor can be configured to process communication protocols and communication data, and the central processing unit can be configured 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, and the like), execute programs, and process data of the programs. Optionally, the communication device 7100 is configured to implement any of the above methods. Optionally, the one or more processors 7101 are configured to invoke instructions to cause the communication device 7100 to implement any of the above methods.

[0729] 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 of transmitting and / or receiving in the above-described methods, and the processor 7101 performs at least one of the other steps. In alternative embodiments, the transceiver can include a receiver and / or a transmitter, which can be separate or integrated together. Alternatively, the terms transceiver, transceiving unit, transceiver, transceiving circuit, interface circuit, interface, etc. can be replaced by each other, the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc. can be replaced by each other, and the terms receiver, receiving unit, receiver, receiving circuit, etc. can be replaced by each other.

[0730] In some embodiments, the communication device 7100 further includes one or more memories 7103 for storing data. Alternatively, all or part of the memory 7103 can also be outside the communication device 7100. In alternative embodiments, the communication device 7100 can include one or more interface circuits 7104. Alternatively, the interface circuit 7104 is connected with the memory 7102, and the interface circuit 7104 can be used to receive data from the memory 7102 or other devices, and can be used to send data to the memory 7102 or other devices. For example, the interface circuit 7104 can read the data stored in the memory 7102 and send the data to the processor 7101.

[0731] The communication device 7100 described in the above embodiments can 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 can not be limited by Figure 7A. The communication device can be a standalone device or can be part of a larger device. For example, the communication device can be: 1) a standalone integrated circuit (IC), or a chip, or a chip system or subsystem; (2) a set of one or more ICs, which can optionally include a storage component for storing data, programs; (3) an ASIC, such as a Modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, a smart terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0732] Figure 7B is a structural schematic diagram of a chip 7200 according to an embodiment of the present disclosure. For the case where the communication device 7100 is a chip or a chip system, the structural schematic diagram of the chip 7200 shown in Figure 7B can be referred to, but is not limited thereto.

[0733] The chip 7200 includes one or more processors 7201. The chip 7200 is configured to execute any of the above methods.

[0734] In some embodiments, chip 7200 further includes one or more interface circuits 7202. Optionally, the terms interface circuit, interface, transceiver pin, etc. can be replaced by each other. In some embodiments, chip 7200 further includes one or more memories 7203 for storing data. Optionally, all or part of memory 7203 can be outside of chip 7200. Optionally, interface circuit 7202 is connected with memory 7203, interface circuit 7202 can be used to receive data from memory 7203 or other devices, interface circuit 7202 can be used to send data to memory 7203 or other devices. For example, interface circuit 7202 can read data stored in memory 7203 and send the data to processor 7201.

[0735] In some embodiments, interface circuit 7202 performs at least one of the communication steps such as sending and / or receiving in the above methods. Interface circuit 7202 performing the communication steps such as sending and / or receiving in the above methods means that interface circuit 7202 performs data interaction between processor 7201, chip 7200, memory 7203 or transceiver devices. In some embodiments, processor 7201 performs at least one of the other steps.

[0736] The modules and / or devices described in each of the embodiments of virtual devices, physical devices, chips, etc. can be combined or separated as appropriate. Optionally, part or all of the steps can also be performed by multiple modules and / or devices in cooperation, which is not limited here.

[0737] The disclosure also proposes a storage medium, and the above storage medium stores instructions, when the above instructions run on communication device 7100, make communication device 7100 execute any one of the above methods. Optionally, the above storage medium is an electronic storage medium. Optionally, the above storage medium is a computer readable storage medium, but is not limited to this, it can also be a storage medium readable by other devices. Optionally, the above storage medium can be a non-transitory storage medium, but is not limited to this, it can also be a transitory storage medium.

[0738] The disclosure also proposes a program product, and the above program product is executed by communication device 7100, makes communication device 7100 execute any one of the above methods. Optionally, the above program product is a computer program product.

[0739] The disclosure also proposes a computer program, when it runs on a computer, makes the computer execute any one of the above methods.

Claims

1. A communication method characterized by comprising: The method is performed by a terminal, and the method comprises: determining first information, the first information comprising at least one of: a power scaling factor corresponding to each spatial domain basis vector used for beamforming in a multiple-input multiple-output (MIMO) transmission; a power scaling factor corresponding to each transmission layer corresponding to one data stream in the MIMO transmission.

2. The method of claim 1, wherein, each spatial domain basis vector is configured with an amplitude scaling factor, the determining of the first information comprises: determining the power scaling factor corresponding to each spatial domain basis vector according to the amplitude scaling factor corresponding to each spatial domain basis vector; and / or, determining the power scaling factor corresponding to each transmission layer according to the amplitude scaling factor corresponding to each spatial domain basis vector.

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

4. The method of claim 3, wherein, the first power scaling factor comprises at least one of: a power scaling factor corresponding to a candidate spatial domain basis vector, the power scaling factor corresponding to the candidate spatial domain basis vector being greater than or equal to a first threshold value; a power scaling factor corresponding to a first spatial domain basis vector, the first spatial domain basis vector being an optimal spatial domain basis vector among the candidate spatial domain basis vectors; a power scaling factor corresponding to a candidate transmission layer, the candidate transmission layer being a transmission layer using the candidate spatial domain basis vector; a power scaling factor corresponding to a first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

5. The method of claim 4, wherein, The first threshold is any one of: or 1; wherein, v represents a rank corresponding to the MIMO transmission, and r represents a number of transmission layers corresponding to the spatial domain basis vectors.

6. The method according to claim 4 or 5, characterized in that, the candidate spatial domain basis vector corresponds to a first codeword, the first codeword being one or more codewords among codewords used in the MIMO transmission.

7. The method according to any one of claims 4-6, characterized in that, The method further comprises: sending, to a network device, second information, the second information comprising at least one of: the adjusted power scaling factor corresponding to each spatial domain basis vector; the adjusted power scaling factor corresponding to each transmission layer; the adjusted power scaling factor corresponding to each candidate spatial domain basis vector; the first spatial domain basis vector; the adjusted power scaling factor corresponding to the first spatial domain 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.

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

9. The method according to any one of claims 4-7, characterized in that, The method comprises: determining the first power scaling factor in cooperation with a network device.

10. The method according to any one of claims 4-9, characterized in that, The first power scaling factor comprises the candidate spatial domain basis vector, or a power scaling factor corresponding to the candidate transmission layer; The adjusting of the first power scaling factor comprises: adjusting 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, to wherein N represents a number of the second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an n th spatial domain basis vector in the second spatial domain basis vectors, s n represents an amplitude scaling factor corresponding to the n th spatial domain basis vector in the second spatial domain basis vectors; The power scaling factor corresponding to the second spatial domain basis vector is less than the first threshold value.

11. The method according to any one of claims 4-10, characterized in that, The first power scaling factor comprises the first spatial domain basis vector or a power scaling factor corresponding to the first transmission layer. The adjusting of the first power scaling factor comprises: adjusting a power scaling factor corresponding to the first spatial domain basis vector or the first transmission layer as or wherein N represents a number of second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an nth spatial domain basis vector in the second spatial domain basis vectors, s n represents a number of transmission layers corresponding to an nth spatial domain basis vector in the second spatial domain basis vectors, s j represents a number of transmission layers corresponding to an jth spatial domain basis vector in the third spatial domain basis vectors, X represents a number of transmission layers corresponding to the first spatial domain basis vectors, and X is greater than or equal to 1. The power scaling factor corresponding to the second spatial domain basis vector is less than the first threshold value, and the third spatial domain basis vector is a spatial domain basis vector excluding the first spatial domain basis vector from the candidate spatial domain basis vector.

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

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

14. A communication method, comprising: The method comprises: determining first information, the first information comprising at least one of: a power scaling factor corresponding to each spatial domain basis vector, the spatial domain basis vector being used for beamforming in multiple-input multiple-output (MIMO) transmission; a power scaling factor corresponding to each transmission layer, each transmission layer corresponding to a data stream in MIMO transmission. The method comprises:

15. The method of claim 14, wherein, sending fourth information, the fourth information being used to indicate an amplitude scaling factor corresponding to each spatial domain basis vector; The amplitude scaling factor is used to determine a power scaling factor corresponding to each spatial domain basis vector, and / or is used to determine a power scaling factor corresponding to each transmission layer. The determination of the first information comprises:

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

17. The method of claim 16, wherein, The first power scaling factor comprises at least one of: a power scaling factor corresponding to a candidate spatial basis vector, the power scaling factor corresponding to the candidate spatial basis vector being greater than or equal to a first threshold value; a power scaling factor corresponding to a first spatial basis vector, the first spatial basis vector being 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 employing the candidate spatial basis vector; a power scaling factor corresponding to a first transmission layer, the first transmission layer being a strongest transmission layer among the candidate transmission layers.

18. The method of claim 17, wherein, The first threshold is any one of: or 1; wherein v represents a rank corresponding to the MIMO transmission, and r represents a number of transmission layers corresponding to the spatial basis vectors.

19. The method of claim 17 or 18, wherein, The candidate spatial basis vector corresponds to a first codeword, the first codeword being one or more codewords among codewords employed by the MIMO transmission.

20. The method according to any one of claims 17-19, characterized by, The method further comprises: sending, to the terminal, second information, the second information comprising at least one of: a power scaling factor corresponding to each of the adjusted spatial basis vectors; a power scaling factor corresponding to each of the adjusted transmission layers; a power scaling factor corresponding to each of the adjusted candidate spatial basis vectors; the first spatial basis vector; a power scaling factor corresponding to the adjusted first spatial basis vector; a power scaling factor corresponding to each of the adjusted candidate transmission layers; the first transmission layer; a power scaling factor corresponding to the adjusted first transmission layer.

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

22. The method according to any one of claims 16-20, characterized by, The method comprises: negotiating with the terminal to determine the first power scaling factor.

23. The method according to any one of claims 17-22, characterized by, The first power scaling factor comprises the power scaling factor corresponding to the candidate spatial basis vector, or the candidate transmission layer; The adjusting the first power scaling factor comprises: adjusting 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, to wherein N represents a number of the second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an n-th spatial domain basis vector in the second spatial domain basis vectors, s n represents an amplitude scaling factor corresponding to the n-th spatial domain basis vector in the second spatial domain basis vectors; the power scaling factor corresponding to the second spatial basis vector is less than the first threshold value.

24. The method according to any one of claims 17-23, characterized by, The first power scaling factor comprises the power scaling factor corresponding to the first spatial basis vector, or the first transmission layer; The adjusting the first power scaling factor comprises: adjusting a power scaling factor corresponding to the first spatial domain basis vector or the first transmission layer as or wherein N represents a number of second spatial domain basis vectors, r n represents a number of transmission layers corresponding to an nth spatial domain basis vector in the second spatial domain basis vectors, s n represents a number of transmission layers corresponding to an nth spatial domain basis vector in the second spatial domain basis vectors, s j represents a number of transmission layers corresponding to an jth spatial domain basis vector in the third spatial domain basis vectors, X represents a number of transmission layers corresponding to the first spatial domain basis vectors, 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 value, and the third spatial basis vector is a spatial basis vector among the candidate spatial basis vectors except the first spatial basis vector.

25. The method according to any one of claims 17-24, characterized by, The first power scaling factor comprises the power scaling factor corresponding to the candidate spatial basis vector, or the candidate transmission layer; The adjusting the first power scaling factor comprises: determining that a 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 value, and adjusting the power scaling factor corresponding to each of the spatial basis vectors or each of the transmission layers to the first threshold value.

26. The method of any one of claims 14-25, wherein, The determining the first information comprises: receiving second information sent by a terminal; determining the first information according to the second information; The second information comprises at least one of: a power scaling factor corresponding to each of the adjusted spatial basis vectors; a power scaling factor corresponding to each of the adjusted transmission layers; a power scaling factor corresponding to each of the adjusted candidate spatial basis vectors; the first spatial basis vector; a power scaling factor corresponding to the adjusted first spatial basis vector; a power scaling factor corresponding to each of the adjusted candidate transmission layers; the first transmission layer; a power scaling factor corresponding to the adjusted first transmission layer.

27. A terminal, characterized by comprises: a processing module configured to determine first information, the first information comprising at least one of: 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 transmission layer corresponding to one data stream in MIMO transmission.

28. A network device, comprising: comprises: a processing module configured to determine first information, the first information comprising at least one of: 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 transmission layer corresponding to one data stream in MIMO transmission. comprises:

29. A communications device, characterized by one or more processors; The communication device is configured to perform the communication method of any one of claims 1-13 or any one of claims 14-26. The network device is configured to perform the communication method of any one of claims 14-26.

30. A communication system, characterized by The instructions, when executed on the communication device, cause the communication device to perform the communication method of any one of claims 1-13 or any one of claims 14-26.

31. A storage medium, the storage medium storing instructions, wherein, The computer program and / or the instructions, when executed on the communication device, implement the communication method of any one of claims 1-13 or any one of claims 14-26.

32. A computer program product comprising computer programs and / or instructions, characterized in that, ​

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