Transmission method and device, and computer-readable storage medium

Abstract

A transmission method and device, and a computer-readable storage medium are disclosed. The transmission method includes the steps described below. A transmission mode of a first communication node is determined; at least one of a codebook or a transmission power ratio is determined according to the transmission mode; and a transmission is transmitted according to at least one of the codebook or the transmission power ratio.

Description

Technology Field

[0001] This application claims priority to Chinese patent application No. 201910711336.1 filed with CNIPA on July 30, 2019, the disclosure of said application is incorporated herein in its entirety by reference.

[0002] The present application relates to a wireless communication network, for example, a transmission method and device, and a computer-readable storage medium. Background Technology

[0003] With the continuous advancement of communication technology, the component performance of wireless communication devices is steadily improving, and next-generation mobile communication systems are likely to be equipped with multiple high-performance antennas. However, in multi-antenna technology, the maximum transmission power capability of a transmitting device cannot be utilized when only a portion of the antennas are used for transmission. For example, a transmitting device supporting up to two antennas can only use half of its maximum transmission power if only one antenna is used for transmission.

[0004] The present application provides a transmission method and device, and a computer-readable storage medium. Accordingly, the transceiving performance of an antenna can be improved, and at the same time, a number of types of communication nodes can be adapted, thereby improving versatility.

[0005] One embodiment of the present application provides a transmission method. The transmission method includes the steps described below.

[0006] The transmission mode of the first communication node is determined.

[0007] At least one of the codebook or transmission power ratio is determined according to the transmission mode.

[0008] Transmission is transmitted according to at least one of the codebook or transmission power ratio.

[0009] One embodiment of the present application provides a transmission method. The transmission method includes the steps described below.

[0010] A transmission transmitted by a first communication node is received according to at least one of a codebook or a transmission power ratio; wherein at least one of the codebook or the transmission power ratio is determined by the first communication node according to the transmission mode of the first communication node.

[0011] One embodiment of the present application provides a transmitting device. The transmitting device includes a processor configured to implement the transmitting method of the above embodiment when executing a computer program.

[0012] An embodiment of the present application further provides a computer-readable storage medium configured to store a computer program that implements the transmission method of the above embodiment when executed by a processor. Brief explanation of the drawing

[0013] FIG. 1 is a flowchart of a transmission method according to one embodiment; FIG. 2 is a flowchart of another transmission method according to one embodiment; FIG. 3 is a flowchart of another transmission method according to one embodiment; FIG. 4 is a diagram illustrating the correspondence relationship between the DCI, precoding information, and the number of layers fields according to one embodiment; FIG. 5 is a structural diagram of a transmitting device according to one embodiment; FIG. 6 is a structural diagram of another transmitting device according to one embodiment; FIG. 7 is a structural diagram of another transmitting device according to one embodiment; FIG. 8 is a structural diagram of another transmitting device according to one embodiment; FIG. 9 is a structural diagram of a base station according to one embodiment; and FIG. 10 is a structural diagram of a UE according to one embodiment. Specific details for implementing the invention

[0014] Embodiments of the present application are described below in conjunction with the drawings.

[0015] Generally, the base station may determine the number of antenna ports based on the capabilities of the user equipment (UE)'s transmission antenna, or schedule the UE to transmit a sounding reference signal (SRS). The SRS is used to sound the uplink channel, also referred to as channel sounding. After obtaining the channel sounding results, the base station determines multiple-input multiple-output (MIMO) parameters (including the number of layers, precoding, etc.) for the subsequent uplink transmission based on the channel sounding results, and then specifies the determined precoding matrix for the UE's uplink transmission, namely the transmitted precoding matrix indicator (TPMI). The UE precodes the transmitted data using the specified precoding matrix and transmits it to the base station.

[0016] In a new radio access technology (NR) system, when uplink transmission is transmitted using a MIMO multiple antenna method, the uplink transmission may be divided into codebook-based transmission and non-codebook-based transmission. A codebook is a set of predefined codewords containing at least one codeword. Each codeword is a matrix configured for the precoding of multiple ports of a transmitting terminal (e.g., UE). Thus, the codeword is also referred to as a precoding matrix. Each row of the codeword matrix represents an antenna port, and each column of the codeword matrix represents a layer (MIMO layer). For example, Table 1 illustrates a codebook for two antenna ports and one layer.

[0017]

[0018] From Table 1, it can be seen that the codebook contains 6 codewords, and each codeword has two rows and one column. Each codeword is identified by TPMI.

[0019] The base station may also configure an SRS resource set for the UE, and the SRS resource set includes at least one SRS resource. The usage of the SRS resource set may be beam management, antenna switching, codebook, or non-codebook. The base station schedules the UE to transmit an SRS resource within the SRS resource set having codebook or non-codebook usage to perform sounding of an uplink channel, also referred to as channel sounding. The base station determines transmit parameters for a subsequent uplink transmit based on the channel sounding results. The base station uses an SRS resource set having codebook usage to schedule a codebook-based uplink transmit, and uses an SRS resource set having non-codebook usage to schedule a non-codebook-based uplink transmit.

[0020] The base station may configure different SRS resources for the UE, and the UE transmits different SRS on different SRS resources, and then the base station needs to display an SRS resource indicator (SRI) for uplink transmission. Different SRS resources correspond to different transmission beam resources (groups), different antenna panels (groups), or antenna ports with different precoding schemes.

[0021] For codebook-based transmission, the base station selects appropriate precoding information (i.e., codeword) from a predefined codebook according to the sounded channel and displays the precoding information to the UE by using TPMI.

[0022] In the case of non-codebook-based transmission, the base station does not need to display TPMI to the UE; however, if the UE uses multiple antenna ports, the UE may determine the precoding information for transmission itself.

[0023] As the above-mentioned uplink transmission, a physical uplink shared channel (PUSCH) transmission is used as an example. When scheduling a PUSCH transmission, the base station uses the SRI field of the downlink control information (DCI) of the physical layer control signaling to indicate one or more SRS resources within the set of SRS resources as the sending parameter reference for the PUSCH transmission. For example, to transmit a scheduled PUSCH transmission, the UE uses an SRS resource indicated by the base station that has the same sending filter parameters.

[0024] For codebook-based PUSCH transmission, the length of the bit for the SRI field of the DCI depends on the number of SRS resources in the SRS resource set. For example, if the number of SRS resources in the SRS resource set is 2, only 1 bit is required for the SRI field.

[0025] Depending on the number of ports supported by the SRS resource, DCI additionally uses fields of precoding information and fields of the number of layers to indicate MIMO parameters of PUSCH transmission (e.g., the number of MIMO layers and the precoding matrix).

[0026] For example, Table 2 is used to show the contents of the fields for precoding information and the number of layers when the maximum rank (maxrank) of the four antenna ports is 2, 3, or 4, and different columns correspond to different coherent capabilities, respectively.

[0027]

[0028]

[0029]

[0030] As shown in Table 2, for the field of precoding information and number of layers where its codebookSubset parameter is fullyAndPartialAndNonCoherent, there are 62 valid indicators, and the size of the field of precoding information and number of layers is 6 bits. For the field of precoding information and number of layers where its codebookSubset parameter is partialAndNonCoherent, there are 32 valid indicators, and the size of the field of precoding information and number of layers is 5 bits. For the field of precoding information and number of layers where its codebookSubset parameter is nonCoherent, there are 12 valid indicators, and the size of the field of precoding information and number of layers is 4 bits.

[0031] Table 3 is used to represent the contents of the fields for precoding information and the number of layers when the maximum rank of the four antenna ports is 1, and different columns correspond to different coherent capabilities.

[0032]

[0033]

[0034] As shown in Table 3, for the field of precoding information and number of layers where its codebookSubset parameter is fullyAndPartialAndNonCoherent, there are 28 valid indicators, and the size of the field of precoding information and number of layers is 5 bits. For the field of precoding information and number of layers where its codebookSubset parameter is partialAndNonCoherent, there are 12 valid indicators, and the size of the field of precoding information and number of layers is 4 bits. For the field of precoding information and number of layers where its codebookSubset parameter is nonCoherent, there are 4 valid indicators, and the size of the field of precoding information and number of layers is 2 bits.

[0035] Table 4 is used to represent the contents of the fields for precoding information and the number of layers when the maximum rank of the two antenna ports is 2, and different columns correspond to different coherent capabilities.

[0036]

[0037] As shown in Table 4, for the field of precoding information and number of layers where its codebookSubset parameter is fullyAndPartialAndNonCoherent, there are 9 valid indicators, and the size of the field of precoding information and number of layers is 4 bits. For the field of precoding information and number of layers where its codebookSubset parameter is nonCoherent, there are 3 valid indicators, and the size of the field of precoding information and number of layers is 2 bits.

[0038] Table 5 is used to represent the contents of the fields for precoding information and the number of layers when the maximum rank of the two antenna ports is 1, and different columns correspond to different coherent capabilities.

[0039]

[0040] As shown in Table 5, there are 6 valid indicators for the field of precoding information and the number of layers where its codebookSubset parameter is fullyAndPartialAndNonCoherent, and the size of the field of precoding information and the number of layers is 3 bits. For the field of precoding information and the number of layers where its codebookSubset parameter is nonCoherent, there are 2 valid indicators, and the size of the field of precoding information and the number of layers is 1 bit.

[0041] As can be seen from the above description, Tables 2 and 3 are indicators for the fields of precoding information and the number of layers in the case of four antenna ports. A TPMI of one layer refers to a precoding matrix corresponding to the TPMI index in Table 6 or Table 7. A TPMI of two layers refers to a precoding matrix corresponding to the TPMI index in Table 8. A TPMI of three layers refers to a precoding matrix corresponding to the TPMI index in Table 9. A TPMI of four layers refers to a precoding matrix corresponding to the TPMI index in Table 10.

[0042]

[0043]

[0044]

[0045]

[0046]

[0047] Tables 4 and 5 are indicators for the fields of precoding information and the number of layers for the case of two antenna ports. The TPMI of one layer refers to the precoding matrix corresponding to the TPMI index in Table 1. The TPMI of two layers refers to the precoding matrix corresponding to the TPMI index in Table 11.

[0048]

[0049] In NR systems, non-codebook-based transmission is supported to utilize maximum power; however, in the case of codebook-based transmission, there is no efficient solution to support codebook-based transmission to utilize maximum power. Embodiments of the present application provide a mobile communication network (including, but not limited to, a 5th generation mobile communication network (5G)). The network architecture of the network may include network-side devices (e.g., one or more types of base stations, transmitting nodes, access points (APs), repeaters, Node Bs (NBs), Universal Terrestrial Radio Access (UTRA), Evolved Universal Terrestrial Radio Access (EUTRA), etc.) and terminals (users, user device data cards, repeaters, mobile devices, etc.). Embodiments of the present application provide a transmission method and device capable of operating on said network architecture, and a computer-readable storage medium. In this way, the transmission and reception performance of the antenna can be improved, and at the same time, a number of types of communication nodes can be adapted, and universality is improved. The operating environment of the transmission method provided in the embodiments of the present application is not limited to the network architecture above.

[0050] The uplink transmission referred to in this application may include at least one of PUSCH transmission, physical uplink control channel (PUCCH) transmission, or SRS transmission. All of the following embodiments of this application are described by using PUSCH transmission as an example.

[0051] The transmission method, device, and effects provided by the present application are described below.

[0052] FIG. 1 is a flowchart of a transmission method according to one embodiment. As illustrated in FIG. 1, the method provided by the embodiment is applicable to a transmission terminal, and the transmission terminal may be a first communication node (e.g., a terminal or a UE). The method includes the steps described below.

[0053] In step S110, the transmission mode of the first communication node is determined.

[0054] In one embodiment, a method for determining the transmission mode of the first communication node may include any one of the two methods described below.

[0055] Method 1: A first communication node reports the capability of the first communication node to a second communication node (e.g., base station, network side, or node B), and the first communication node itself determines the transmission mode of the first communication node.

[0056] Method 2: The first communication node reports the capability of the first communication node to the second communication node, and the second communication node configures a transmission mode for the first communication node according to the capability of the first communication node and transmits the transmission mode to the first communication node.

[0057] The transmission mode includes at least one of the first mode or the second mode.

[0058] In one embodiment, when the transmission mode is the first mode, the first communication node has at least one of the features described below.

[0059] The first communication node transmits one layer of transmission over more than X ports. X is determined by the coherent capability of the first communication node. If the transmission coherent characteristic of the first communication node is non-coherent (e.g., the pusch-TransCoherent parameter is non-coherent), X = 1; and / or if the transmission coherent characteristic of the first communication node is partially coherent (e.g., the pusch-TransCoherent parameter is partialCoherent), X = 2.

[0060] A first communication node transmits one layer of transmission by using at least two ports without coherence. When the first communication node transmits one layer of transmission by using at least two ports without coherence, the phase difference between at least two ports is random; alternatively, when TPMI exceeding the coherent capability of the first communication node is used, the first communication node is allowed to change the phase of the antenna ports.

[0061] All SRS resources within the SRS resource set support the same number of SRS ports, and the SRS resource set is configured for a first communication node in a first mode having the usage of a codebook.

[0062] In one embodiment, when the transmission mode is a second mode, the first communication node has at least one of the features described below.

[0063] If the first communication node supports transmission on a port whose number is less than the number of configured ports, or if there is an all-0 row in the precoding matrix corresponding to the TPMI used by transmission, or if there is a zero-power port in the precoding matrix corresponding to the TPMI used by transmission, the power of each port is determined by the power capability of the first communication node; among the number of SRS ports supported by different SRS resources within the SRS resource set, the number of different numbers is one or more, and the SRS resource set is configured for the first communication node in the second mode having the usage of the codebook.

[0064] The fact that there is one or more different numbers of SRS ports supported by different SRS resources within an SRS resource set indicates that different SRS resources within an SRS resource set may be configured to have different numbers of SRS ports. For example, an SRS resource set contains three SRS resources, and the number of ports of these three SRS resources is four, two, and one, respectively, and the number of different numbers of SRS ports is three; and when an SRS resource set contains four SRS resources, and the number of ports of the four SRS resources is four, one, four, and one, respectively, the number of different numbers of SRS ports is two.

[0065] In step S120, at least one of the codebook or transmission power ratio is determined according to the transmission mode.

[0066] In one embodiment, when the transmission mode is a first mode, the step of determining the codebook according to the transmission mode may include the step described below.

[0067] A first communication node whose codebookSubset parameter is partialAndNonCoherent or nonCoherent supports a codebook containing an extended TPMI set or a full power state.

[0068] A transmission that supports a full power state has at least one of the features described below.

[0069] The number of layers is 1.

[0070] TPMI is a reserved value.

[0071] Transmission is performed by occupying all ports configured for the SRS resources associated with the transmission. The SRS resources associated with the transmission refer to the SRS resources corresponding to the SRS resource indicator (SRI) included in the control information (DCI) that schedules the transmission. Each SRS resource is configured with a number of SRS ports for MIMO channel sounding. Transmitting transmission by occupying all ports configured for the SRS resources associated with the transmission indicates that the power of each of the ports configured for the SRS resources associated with the transmission is not zero.

[0072] Transmission having the same power on all non-zero-power ports indicates that the first communication node uses all ports configured for the SRS resources associated with the transmission to transmit the transmission, and that each port has the same power.

[0073] The precoding of the transmission has the same modulus value on all non-zero power ports.

[0074] The phase of the precoding of transmission on all non-zero power ports depends on the first communication node.

[0075] The precoding of transmission depends on the first communication node.

[0076] In one embodiment, the full power state is indicated in the full power state indication field of the control information scheduling the transmission, or in one of the fields of the precoding information and the number of layers.

[0077] The total power state displayed in the total power state display field of the control information for scheduling transmission indicates that a field of the control information for scheduling transmission (DCI) is used to indicate whether the total power state is open or closed. For example, a value of 1 indicates open, and a value of 0 indicates closed. The total power state displayed in the fields of precoding information and number of layers of the control information for scheduling transmission indicates that a state exists in the fields of precoding information and number of layers of the control information for scheduling transmission (DCI) (a state in the relationship table between the number of layers and the precoding information and the values ​​of the fields corresponding to the precoding information and number of layers, which may also be referred to as code points or entries). For example, the number of layers and precoding information where the values ​​for the fields of precoding information and number of layers include 0 to 11 and the codebookSubset parameter is noncoherent is shown in Table 2. Values ​​of 12 to 15 are reserved. In the current implementation, a value of 12 indicates the total power state. If the codebookSubset parameter is noncoherent, and the fields for the number of precoding information and layers displayed in the control information (DCI) have a value of 12, it indicates that the total power state is open.

[0078] In one embodiment, the extended TPMI set has at least one of the features described below.

[0079] The extended TPMI set is a universal set of TPMI sets whose codebookSubset parameter is fullyAndPartialAndNonCoherent; the extended TPMI set is a subset of TPMI sets whose codebookSubset parameter is fullyAndPartialAndNonCoherent; or there exists a random phase difference between the ports of the precoding matrix of the extended TPMI set.

[0080] In one embodiment, in response to the number of antenna ports being 4, for a first communication node whose codebookSubset parameter is noncoherent, the field of the number of layers and the precoding information of the first communication node includes at least one of the cases described below.

[0081] 1 layer: TPMI = 4; 1 layer: TPMI = 8; 1 layer: TPMI = 12; 2 layers: TPMI = 6; 2 layers: TPMI = 14; 3 layers: TPMI = 1; 3 layers: TPMI = 3; 4 layers: TPMI = 1; or 4 layers: TPMI = 3.

[0082] In response to the number of antenna ports being 4, for a first communication node whose codebookSubset parameter is partialAndNonCoherent, the fields of the number of layers and the precoding information of the first communication node include at least one of the cases described below.

[0083] 1 layer: TPMI = 12; 2 layers: TPMI = 14; 3 layers: TPMI = 3; or 4 layers: TPMI = 3.

[0084] In response to the number of antenna ports being 2, for a first communication node whose codebookSubset parameter is noncoherent, the fields of the number of layers and the precoding information of the first communication node include at least one of the cases described below.

[0085] 1 layer: TPMI = 2; or 2 layers: TPMI = 1.

[0086] In one embodiment, the extended TPMI set includes at least one of the precoding matrices described below.

[0087]

[0088] α, β, and γ are all constant modulus complex numbers.

[0089] α, β, and γ are complex numbers with a constant modulus, and may also be complex numbers with a modulus of 1. α, β, and γ are in exponential form, for example, α = e jx It may also be written as . The phases of α, β, and γ are not fixed, and the non-fixed phases may also satisfy a predetermined range of values. For example, the range of values ​​for α includes, but is not limited to, -A to +B, where A and B are values ​​representing the phase. For example, π, π / 2, π / 4, and so on.

[0090] The value of a constant modulus complex number (α, β, γ) is determined by at least one of the following parameters: a serial number in the frequency domain, a serial number in the time domain, or a serial number of a modulated and coded symbol. Alternatively, the value of α, β, γ is associated with at least one of the following parameters: a serial number in the frequency domain, a serial number in the time domain, or a serial number of a modulated and coded symbol. Alternatively, the value of α, β, γ may be the same or different for at least one of the following parameters: a serial number in the frequency domain, a serial number in the time domain, or a serial number of a modulated and coded symbol. Alternatively, the value of α, β, γ is independent of at least one of the following different parameters: a serial number in the frequency domain, a serial number in the time domain, or a serial number of a modulated and coded symbol.

[0091] A frequency domain unit includes one of a resource block (RB), a resource element (RE), a bandwidth part (BWP), or a component carrier (CC). The serial number of the frequency domain unit indicates the serial number of the frequency domain unit, for example, RB #1 or RB #2.

[0092] A time domain unit includes one of an orthogonal frequency division multiplexing (OFDM) symbol, slot, subframe, or radio frame. The sequence number of the time domain unit indicates the sequence number of the above time domain unit, for example, slot #1 or slot #2.

[0093] Modulated and coded symbols refer to symbols in the complex field after modulation and coding of source bit data. Modulated and coded symbols are mapped to MIMO layers, and modulated and coded symbols may also be referred to as modulated and coded symbols on MIMO layers. The sequence number of a modulated and coded symbol refers to the sequence number of a modulated and coded symbol, or the sequence number of a modulated and coded symbol on a MIMO layer. For example, the number of modulated and coded symbols after modulation and encoding is 4, and the sequence numbers of the modulated and coded symbols are #1 to #4. The number of MIMO layers is 2, the number of modulation mode symbols on each MIMO layer is 2, and the sequence numbers of the modulation mode symbols on each layer are #1 to #2.

[0094] In one embodiment, the step of determining the transmission power ratio according to the transmission mode includes at least one of the methods described below.

[0095] When the transmission mode is the second mode, the transmission power ratio is determined according to the power capability of the TPMI of the transmission; when the transmission mode is the first mode, the transmission power ratio is determined according to the number of ports of the SRS resources corresponding to the transmission; when the transmission mode is the first mode, the transmission power ratio is determined according to the maximum number of ports of all SRS resources within the set of SRS resources corresponding to the transmission.

[0096] Determination of the transmission power ratio according to the power capability of the TPMI of transmission includes at least one of the methods described below.

[0097] A power capability of a subset or universal set of TPMI having a precoding matrix having a zero-port is transmitted to a second communication node, wherein the TPMI is within a set of TPMI supported by a first communication node; a power capability of a subset or universal set of TPMI having a precoding matrix having a zero-port is transmitted to a second communication node, wherein the TPMI is within a set of TPMI supported by a first communication node, and the power capability corresponds to a different number of ports, respectively; a power capability supported by a port corresponding to a different number of ports, respectively is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined TPMI is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined port is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined TPMI and corresponding to a different number of ports, respectively is transmitted to the second communication node; Or, at least one power capability of a set of power capabilities, supported by a predefined port and corresponding to each different number of ports, is transmitted to a second communication node.

[0098] A different number of ports refers to either a different number of ports supported by a first communication node or a different number of ports configured for the first communication node. The former is determined by the capability of the first communication node, and the latter is determined by the configuration information of the second communication node. For example, the UE supports 4 ports, 2 ports, and 1 port. The base station configures an SRS resource set for the UE, and the SRS resource set includes 2 SRS resources configured with 2 ports and 1 port, respectively. In cases where the number of ports is 4, 2, and 1, the UE transmits to the second communication node, respectively, the power capability of a subset or a general set of TPMI having a precoding matrix having zero ports, the TPMI is within the TPMI set supported by the first communication node, and the power capability corresponds to the number of ports, respectively; Alternatively, the UE may transmit to the second communication node, respectively, the power capability supported by each port corresponding to each number of ports in cases where the number of ports is 4, 2, and 1; alternatively, the UE may transmit to the second communication node, respectively, the power capability of a subset of TPMI or a general set having a precoding matrix having zero ports in cases where the number of ports is 2 and 1, and the TPMI is within the TPMI set supported by the first communication node and the power capability corresponds to each number of ports; alternatively, the UE may transmit to the second communication node, respectively, the power capability supported by each port corresponding to each number of ports in cases where the number of ports is 2 and 1.

[0099] A different number of ports refers to cases where the number of ports is greater than 1. When the number of ports is equal to 1, it is not necessary for the UE to report the supported power capability, and full power transmission is supported by default.

[0100] In one embodiment, a set of power capabilities supported by a predefined TPMI includes at least one of the power capabilities described below.

[0101] Power capability supported by TPMI 0 of 1 layer and 4 antenna ports; power capability supported by TPMI 1 of 1 layer and 4 antenna ports; power capability supported by TPMI 2 of 1 layer and 4 antenna ports; power capability supported by TPMI 3 of 1 layer and 4 antenna ports; full power capability supported by TPMI 0 of 1 layer and 4 antenna ports; full power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 4 antenna ports; full power capability supported by both TPMI 0 and TPMI 2 of 1 layer and 4 antenna ports; full power capability supported by all TPMI 0 through TPMI 3 of 1 layer and 4 antenna ports; power capability supported by TPMI 0 of 1 layer and 2 antenna ports; Power capability supported by TPMI 1 of 1 layer and 2 antenna ports; full power capability supported by TPMI 0 of 1 layer and 2 antenna ports; or full power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 2 antenna ports.

[0102] A TPMI that supports full power indicates that, when the transmission uses the TPMI precoding matrix, the maximum power of the transmission may reach the maximum power of the first communication node.

[0103] For example, for 4 ports, the set of power capabilities supported by the predefined TPMI includes the power capabilities described below:

[0104] Power capability supported by TPMI 0 of 1 layer and 4 antenna ports; power capability supported by TPMI 1 of 1 layer and 4 antenna ports; power capability supported by TPMI 2 of 1 layer and 4 antenna ports; and power capability supported by TPMI 3 of 1 layer and 4 antenna ports.

[0105] The UE separately reports the above power capability to the base station. The reported overhead is 4 * N1, where N1 is the power capability overhead. If the power capability supports full power, N1 is 1 bit. If the power capability is a supported power class, and the power class is 1, 1 / 2, or 1 / 4, the power capability overhead (N1) is 2 bits.

[0106] For 4 ports, the set of power capabilities supported by the predefined TPMI may additionally include the power capabilities described below:

[0107] Full power capability supported by TPMI 0 of 1 layer and 4 antenna ports; full power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 4 antenna ports; full power capability supported by both TPMI 0 and TPMI 2 of 1 layer and 4 antenna ports; and full power capability supported by all TPMI 0 to TPMI 3 of 1 layer and 4 antenna ports.

[0108] The UE reports one of the above power capabilities to the base station. The reported overhead is 2 bits. A 2-bit value of 00, 01, 10, or 11 represents one of the four cases above, respectively.

[0109] For 2 ports, the set of power capabilities supported by the predefined TPMI includes the power capabilities described below:

[0110] Power capability supported by TPMI 0 of 1 layer and 2 antenna ports; and power capability supported by TPMI 1 of 1 layer and 2 antenna ports.

[0111] The UE separately reports the above power capability to the base station. The reported overhead is 2 * N1, where N1 is the power capability overhead. If the power capability supports full power, N1 is 1 bit. If the power capability is a supported power class, and the power class is 1, 1 / 2, or 1 / 4, the power capability overhead (N1) is 2 bits.

[0112] For 2 ports, the set of power capabilities supported by the predefined TPMI may additionally include the power capabilities described below:

[0113] Full power capability supported by TPMI 0 of 1 layer and 2 antenna ports; and full power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 2 antenna ports.

[0114] The UE reports one of the above power capabilities to the base station. The reported overhead occupies 1 bit. A 1-bit value of 0 or 1 represents one of the two cases above, respectively.

[0115] In one embodiment, a set of power capabilities supported by a predefined port includes at least one of the power capabilities described below.

[0116] Power capability supported by Port 0 of 4 antenna ports; power capability supported by Port 1 of 4 antenna ports; power capability supported by Port 2 of 4 antenna ports; power capability supported by Port 3 of 4 antenna ports; total power capability supported by Port 0 of 4 antenna ports; total power capability supported by both Port 0 and Port 1 of 4 antenna ports; total power capability supported by both Port 0 and Port 2 of 4 antenna ports; total power capability supported by all Ports 0 through 3 of 4 antenna ports; power capability supported by Port 0 of 2 antenna ports; power capability supported by Port 1 of 2 antenna ports; total power capability supported by Port 0 of 2 antenna ports; or total power capability supported by both Port 0 and Port 1 of 2 antenna ports.

[0117] For example, in the case of four ports, the set of power capabilities supported by the predefined ports includes the power capabilities described below:

[0118] Power capability supported by Port 0 of the four antenna ports; power capability supported by Port 1 of the four antenna ports; power capability supported by Port 2 of the four antenna ports; and power capability supported by Port 3 of the four antenna ports.

[0119] The UE separately reports the above power capability to the base station. The reported overhead is 4 * N2, where N2 is the power capability overhead. If the power capability is whether full power is supported, N2 is 1 bit. If the power capability is a supported power class and the power class is 1, 1 / 2, or 1 / 4, the power capability overhead (N2) is 2 bits.

[0120] For 4 ports, the set of power capabilities supported by the predefined ports may additionally include the power capabilities described below:

[0121] The total power capability supported by Port 0 of the four antenna ports; the total power capability supported by both Port 0 and Port 1 of the four antenna ports; the total power capability supported by both Port 0 and Port 2 of the four antenna ports; and the total power capability supported by all of Ports 0 through 3 of the four antenna ports. The UE reports one of the above power capabilities to the base station. The reported overhead is 2 bits. A 2-bit value of 00, 01, 10, or 11 represents one of the four cases above, respectively.

[0122] For 2 ports, the set of power capabilities supported by the predefined ports includes the power capabilities described below:

[0123] Power capability supported by Port 0 of the two antenna ports; and power capability supported by Port 1 of the two antenna ports. The UE reports the above power capabilities separately to the base station. The reported overhead is 2 * N2, where N2 is the power capability overhead. If the power capability supports full power, N2 is 1 bit. If the power capability is a supported power class, and the power class is 1, 1 / 2, or 1 / 4, the power capability overhead (N2) is 2 bits.

[0124] For 2 ports, the set of power capabilities supported by the predefined TPMI may additionally include the power capabilities described below:

[0125] The full power capability supported by Port 0 of the two antenna ports; and the full power capability supported by both Port 0 and Port 1 of the two antenna ports.

[0126] The UE reports one of the above power capabilities to the base station. The reported overhead is 1 bit. A 1-bit value of 0 or 1 represents one of the two cases above, respectively.

[0127] In one embodiment, the first communication node has at least one of the features described below.

[0128] In response to TPMI 0 of one layer and four antenna ports supporting full power capability or Port 0 of the four antenna ports supporting full power capability, all TPMIs within a four-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 0 support full power capability; in response to TPMI 1 of one layer and four antenna ports supporting full power capability or Port 1 of the four antenna ports supporting full power capability, all TPMIs within a four-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 1 support full power capability; in response to TPMI 2 of one layer and four antenna ports supporting full power capability or Port 2 of the four antenna ports supporting full power capability, all TPMIs within a four-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 2 support full power capability; In response to TPMI 3 of one layer and four antenna ports supporting full power capability, or Port 3 of the four antenna ports supporting full power capability, all TPMIs within a 4-antenna TPMI set supported by the first communication node and having a precoding matrix with a non-zero port 3 support full power capability; in response to TPMI 0 of one layer and two antenna ports supporting full power capability, or Port 0 of the two antenna ports supporting full power capability, all TPMIs within a 2-antenna TPMI set supported by the first communication node and having a precoding matrix with a non-zero port 0 support full power capability;Or, in response to TPMI 1 of one layer and two antenna ports supporting full power capability or port 1 of the two antenna ports supporting full power capability, all TPMIs within a set of two antenna TPMIs having a precoding matrix supported by a first communication node and having a non-zero port 1 support full power capability; whereby the power capability of the TPMIs supported by the first communication node is the smaller value between the sum of the powers supported by all non-zero ports of the TPMIs and the maximum transmit power of the first communication node; and in response to the number of non-zero ports of the TPMIs supported by the first communication node being zero, the TPMIs support full power capability.;

[0129] In one embodiment, power capability includes at least one of the items described below.

[0130] Whether the maximum transmission power of the first communication node is reached; or power rating; where the power rating is the ratio of power capability to the maximum transmission power of the first communication node.

[0131] The fact that the TPMI or port supports full power indicates that when the transmission uses only the precoding matrix of the TPMI or port, the maximum power of the transmission may reach the maximum transmission power of the first communication node, such as Pcmax.

[0132] In step S130, the transmission is transmitted according to at least one of the codebook or the transmission power ratio.

[0133] In one embodiment, for the first communication node, the transmission has at least one of the features described below.

[0134] The number of open-loop power control parameters of transmission does not exceed a predefined value X12; the number of closed-loop power control parameters of transmission does not exceed a predefined value X13; or the number of path loss measurement parameters of transmission does not exceed a predefined value X14.

[0135] The values ​​of X12, X13, and X14 depend on the capabilities of the first communication node or are predefined.

[0136] The second communication node configures power control parameters for different types of transmissions of the first communication node. The power control parameters include at least one of an open-loop power control parameter, a closed-loop power control parameter, or a path loss measurement parameter.

[0137] In one embodiment, the power control parameter includes at least one of the items described below.

[0138] 1. Open-loop power control parameter. In one embodiment, the open-loop power control parameter may consist of a path loss adjustment factor (α) and / or a target power (p0). The magnitude of the power may be changed by changing the magnitude of α.

[0139] 2. Reference signal parameter of path loss (PL). It includes a reference signal resource index, and the path loss is obtained from the reference signal measurement result identified by the reference signal index.

[0140] 3. Closed-loop power control parameter. The closed-loop power control parameter includes at least one of a closed-loop power control index or a closed-loop power control amount.

[0141] For example, a second communication node (e.g., a base station) configures open-loop power control parameters, closed-loop power control parameters, and path loss measurement parameters used for PUSCH transmission for PUSCH transmission of a first communication node (e.g., a UE). The second communication node further configures open-loop power control parameters, closed-loop power control parameters, and path loss measurement parameters used for PUCCH transmission for PUCCH transmission of the first communication node.

[0142] For each type of transmission, there may be multiple supported parameters for each type of power control parameter. For example, the number of open-loop power control parameters for PUSCH transmission may be up to 32, and the number of closed-loop power control parameters for PUSCH transmission may be up to 2. The number of path loss measurement parameters for PUSCH transmission may be up to 4.

[0143] Based on the above embodiment, in conjunction with FIG. 1, FIG. 2 is a flowchart of another transmission method according to the embodiment. In addition to steps S110, S120, and S130 above, the method further includes the steps described below.

[0144] In step S100, scheduling information for transmission transmitted by the second communication node is received.

[0145] Scheduling information for transmission includes at least one of the following information: frequency domain resource allocation information, time domain resource allocation information, modulation and coding scheme (MCS), or MIMO association information. MIMO association information includes precoding information, the number of layers, antenna port indicators, etc.

[0146] Scheduling information for transmission is carried in at least one of the following information: radio resource control (RRC) signaling, media access control control element (MAC CE), or physical layer signaling. The physical layer signaling includes at least one of a physical downlink control channel (PDCCH) or DCI (e.g., DCI format 0_1).

[0147] In one embodiment, the number of bits (M) for the fields of precoding information and the number of layers in physical layer signaling is determined by at least one of the items described below:

[0148] A maximum number of ports of an SRS resource within an SRS resource set corresponding to either a first communication node or a transmission; a number of ports of an SRS resource corresponding to a transmission; a maximum number of layers or a maximum rank; a number of bits configured by a second communication node and for fields of precoding information and the number of layers; or a predefined number of bits for fields of precoding information and the number of layers.

[0149] In one embodiment, the precoding information and the number of layers indicated by the values ​​of the fields of precoding information and the number of layers in physical layer signaling are analyzed by at least one of the information described below:

[0150] The number of ports of the SRS resource corresponding to transmission; the maximum number of layers or the maximum rank of the first communication node; or the actual maximum number of layers or the actual maximum rank.

[0151] The precoding information and the number of layers indicated by the value of the field of precoding information and the number of layers in physical layer signaling are analyzed by the maximum number of layers or maximum rank of the first communication node and the number of ports of the SRS resource corresponding to transmission.

[0152] If the maximum number of layers or the maximum rank of the first communication node is greater than the number of ports of the SRS resource corresponding to transmission, the number of precoding information and layers indicated by the values ​​of the fields of precoding information and the number of layers in physical layer signaling are analyzed by the number of ports of the SRS resource corresponding to transmission and the actual maximum number or actual maximum rank of the layers. The actual maximum number of layers or the actual maximum rank of the layers is less than or equal to the number of ports of the SRS resource corresponding to transmission. In the implementation method, the actual maximum number of layers or the actual maximum rank of the layers is equal to the number of ports of the SRS resource corresponding to transmission.

[0153] For example, the maximum number of layers or maximum rank of the first communication node is 4, and the number of ports of the SRS resource corresponding to transmission is 2. When the number of precoding information and layers indicated by the values ​​of the fields for the number of precoding information and layers in physical layer signaling is analyzed by querying a table, it is necessary to query tables having a number of ports of 2, such as Table 4 and Table 5. In these two tables, only maxRank of 1 or 2 is supported, and maxRank of 4 is not supported. In this case, the actual maximum number of layers or actual maximum rank, such as 2, may be used to query the table, and as a result, Table 4 is queried. Here, Table 4 and Table 5 are used as examples, and in actual cases, there may be tables that are modified from Table 4 and Table 5.

[0154] In the case of the above example, another adoptable approach is to extend the scope of Table 4, that is, to enable Table 4 to be applied up to the maximum rank of 3 or 4.

[0155] In one embodiment, when the number of ports of an SRS resource corresponding to transmission is less than the maximum number of ports of an SRS resource within an SRS resource set, the number of required indication bits for the number of precoding information and layers corresponding to transmission is N, where N is less than or equal to M.

[0156] In physical layer signaling, the M bits for the fields of precoding information and the number of layers contain N required indication bits for the precoding information and the number of layers, and the remaining (M - N) bits are repetitions or preset values ​​of the N required indication bits for the precoding information and the number of layers.

[0157] Physical layer signaling includes SRS information, and the SRS information is used to indicate SRS resources within the SRS resource set of the first communication node.

[0158] An SRS resource is associated with at least one of a spatial relationship, a panel, or a beam. Each SRS resource is configured to have multiple SRS ports.

[0159] In one embodiment, an SRS resource within an SRS resource set is determined according to one of the features described below.

[0160] SRS resources associated with the same spatial relationship belong to one SRS group; SRS resources associated with the same panel belong to one SRS group; SRS resources associated with the same beam belong to one SRS group; SRS resources whose associated beam has a quasi-co-location (QCL) relationship belong to one SRS group; or SRS resources having the same number of SRS ports belong to one SRS group.

[0161] An SRS resource within an SRS resource set has at least one of the features described below.

[0162] SRS resources with the same number of ports are associated with different spatial relationships; SRS resources with the same number of ports are associated with different panels; SRS resources with the same number of ports are associated with different beams; beams associated with SRS resources with the same number of ports do not have QCL relationships; or resources belonging to the same SRS group have different numbers of ports.

[0163] For example, one SRS group includes three SRS resources, and the number of ports configured for each SRS resource is different. The number of ports for these three SRS resources may be 1, 2, and 4.

[0164] In one embodiment, for the first communication node, the SRS resource in the SRS resource set has at least one of the features described below.

[0165] The number of SRS groups does not exceed a predefined value X1; the number of spatial relationships associated with SRS resources within an SRS resource set does not exceed a predefined value X2; the number of panels associated with SRS resources within an SRS resource set does not exceed a predefined value X3; the number of different ports among the number of ports associated with SRS resources within an SRS resource set does not exceed a predefined value X4; the number of SRS resources within an SRS resource set does not exceed a predefined value X5; the number of open-loop power control parameters configured for an SRS resource set does not exceed a predefined value X6; the number of closed-loop power control parameters configured for an SRS resource set does not exceed a predefined value X7; the number of path loss measurement parameters configured for an SRS resource set does not exceed a predefined value X8; the number of open-loop power control parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X9; The number of closed-loop power control parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X10; or the number of path loss measurement parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X11.

[0166] The values ​​of X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, and X11 depend on the capability of the first communication node or are predefined values.

[0167] In one embodiment, all SRS resources within an SRS resource set are divided into X SRS groups, where X is a positive integer, and the SRS resources included in one of the X SRS groups are determined by the SRS resource serial number.

[0168] SRS resources with even serial numbers and SRS resources with odd serial numbers each belong to different SRS groups; alternatively, the required number of SRS resources are allocated sequentially to each of X SRS groups according to the order of SRS resource serial numbers; alternatively, SRS resources are allocated sequentially to each of X SRS groups according to the order of SRS resource serial numbers until allocation is complete.

[0169] It is assumed that the set of SRS resources contains 4 SRS resources, and the serial numbers of the SRS resources are 0, 1, 2, and 3, respectively, and therefore, the number of SRS groups (X) corresponding to the 4 SRS resources is equal to 2. The SRS grouping method may be one of the methods described below.

[0170] SRS resources whose SRS resource serial numbers are even and SRS resources whose SRS resource serial numbers are odd belong to different SRS groups, respectively. That is, SRS resources with SRS resource serial numbers 0 and 2 belong to SRS group 0, and SRS resources with SRS resource serial numbers 1 and 3 belong to SRS group 1.

[0171] For each of X SRS groups, the required number of SRS resources are sequentially allocated according to the order of SRS resource serial numbers. It is assumed that the number of SRS resources in SRS group 0 and the number of SRS resources in SRS group 1 are the same and both are 2, and therefore, SRS resources with SRS resource serial numbers 0 and 1 belong to SRS group 0, while SRS resources with SRS resource serial numbers 2 and 3 belong to SRS group 1. The number of SRS resources in SRS group 0 and the number of SRS resources in SRS group 1 may also be different. It is assumed that the number of SRS resources in SRS group 0 is 1 and the number of SRS resources in SRS group 1 is 3, and therefore, SRS resources with SRS resource serial number 0 belong to SRS group 0, and SRS resources with SRS resource numbers 1, 2, and 3 belong to SRS group 1. The number of SRS resources within an SRS group (also referred to as the number of SRS resources required by the SRS group) is configured or indicated by a second communication node, or is determined by predefined information.

[0172] SRS resources are allocated sequentially to each of X SRS groups according to the order of SRS resource serial numbers until allocation is complete. That is, an SRS resource with an SRS resource serial number of 0 is allocated to SRS group 0, an SRS resource with an SRS resource serial number of 1 is allocated to SRS group 1, an SRS resource with an SRS resource serial number of 2 is allocated to SRS group 0, and an SRS resource with an SRS resource serial number of 3 is allocated to SRS group 1.

[0173] In one embodiment, SRS information includes first SRS information and second SRS information, the first SRS information is used to indicate an SRS group, and the second SRS information is used to indicate an SRS resource serial number within the SRS group.

[0174] The second SRS information includes at least one of the features described below.

[0175] The second SRS information is displayed together with the precoding information and the number of layers. That the second SRS information is displayed together with the precoding information and the number of layers indicates that a field of composite information is used to display information regarding the second SRS information, precoding information, and the number of layers. Each value of the field of composite information includes the value of the second SRS information and the values ​​of the precoding information and the number of layers.

[0176] The fields for precoding information and the number of layers include second SRS information.

[0177] Different second SRS information corresponds to different precoding information and different numbers of layers.

[0178] For example, when the second SRS information has a value of 1, the number of values ​​for the precoding information and the number of layers is 4, and when the second SRS information has a value of 2, the number of values ​​for the precoding information and the number of layers is 1.

[0179] The second SRS information includes the number of SRS ports.

[0180] In an embodiment of the present application, a transmission mode of a first communication node is determined, and at least one of a codebook or a transmission power ratio is determined according to the transmission mode, and the first communication node transmits a transmission according to at least one of the codebook or the transmission power ratio. In this way, the transmission and reception performance of the antenna can be improved, and at the same time, a plurality of types of communication nodes are adapted, and universality is improved.

[0181] FIG. 3 is a flowchart of another transmission method according to one embodiment. As illustrated in FIG. 3, the method provided by the embodiment is applicable to a receiving terminal, and the receiving terminal may be a second communication node (e.g., a network-side device). The method includes the steps described below.

[0182] In step S200, the scheduling information for transmission is transmitted to the first communication node.

[0183] The scheduling information for transmission is the following information: at least one of RRC signaling, MAC CE, or physical layer signaling, wherein the physical layer signaling includes at least one of PDCCH or DCI (e.g., DCI format 0_1).

[0184] In one embodiment, the number of bits (M) for the fields of precoding information and the number of layers in physical layer signaling is determined by at least one of the items described below:

[0185] A maximum number of ports of an SRS resource within an SRS resource set corresponding to either a first communication node or a transmission; a number of ports of an SRS resource corresponding to a transmission; a maximum number of layers or a maximum rank; a number of bits configured by a second communication node and for fields of precoding information and the number of layers; or a predefined number of bits for fields of precoding information and the number of layers.

[0186] In one embodiment, the precoding information and the number of layers indicated by the values ​​of the fields of precoding information and the number of layers in physical layer signaling are analyzed by at least one of the information described below:

[0187] The number of ports of the SRS resource corresponding to transmission; the maximum number of layers or the maximum rank of the first communication node; or the actual maximum number of layers or the actual maximum rank.

[0188] In one embodiment, when the number of ports of an SRS resource corresponding to transmission is less than the maximum number of ports of an SRS resource within an SRS resource set, the number of required indication bits for the number of precoding information and layers corresponding to transmission is N, where N is less than or equal to M.

[0189] In physical layer signaling, the M bits for the fields of precoding information and the number of layers contain N required indication bits for the precoding information and the number of layers, and the remaining (M - N) bits are repetitions or preset values ​​of the N required indication bits for the precoding information and the number of layers.

[0190] Physical layer signaling includes SRS information, and the SRS information is used to indicate SRS resources within the SRS resource set of the first communication node.

[0191] An SRS resource is associated with at least one of a spatial relationship, a panel, or a beam. Each SRS resource is configured to have multiple SRS ports.

[0192] In one embodiment, an SRS resource within an SRS resource set is determined according to one of the features described below.

[0193] SRS resources associated with the same spatial relationship belong to one SRS group; SRS resources associated with the same panel belong to one SRS group; SRS resources associated with the same beam belong to one SRS group; SRS resources whose associated beam has a QCL relationship belong to one SRS group; or SRS resources having the same number of SRS ports belong to one SRS group.

[0194] An SRS resource within an SRS resource set has at least one of the features described below.

[0195] SRS resources with the same number of ports are associated with different spatial relationships; SRS resources with the same number of ports are associated with different panels; SRS resources with the same number of ports are associated with different beams; beams associated with SRS resources with the same number of ports do not have QCL relationships; or resources belonging to the same SRS group have different numbers of ports.

[0196] For example, one SRS group includes three SRS resources, and the number of ports configured for each SRS resource is different. The number of ports for these three SRS resources may be 1, 2, and 4.

[0197] In one embodiment, all SRS resources within an SRS resource set are divided into X SRS groups, where X is a positive integer, and the SRS resources included in one of the X SRS groups are determined by the SRS resource serial number.

[0198] SRS resources with even serial numbers and SRS resources with odd serial numbers each belong to different SRS groups; alternatively, the required number of SRS resources are allocated sequentially to each of X SRS groups according to the order of SRS resource serial numbers; alternatively, SRS resources are allocated sequentially to each of X SRS groups according to the order of SRS resource serial numbers until allocation is complete.

[0199] In one embodiment, SRS information includes first SRS information and second SRS information, the first SRS information is used to indicate an SRS group, and the second SRS information is used to indicate an SRS resource serial number within the SRS group.

[0200] The second SRS information includes at least one of the features described below.

[0201] The second SRS information is displayed together with the precoding information and the number of layers. That the second SRS information is displayed together with the precoding information and the number of layers indicates that a field of composite information is used to display information regarding the second SRS information, precoding information, and the number of layers. Each value of the field of composite information includes the value of the second SRS information and the values ​​of the precoding information and the number of layers.

[0202] The fields for precoding information and the number of layers include second SRS information.

[0203] Different second SRS information corresponds to different precoding information and different numbers of layers.

[0204] For example, when the second SRS information has a value of 1, the number of values ​​for the precoding information and the number of layers is 4, and when the second SRS information has a value of 2, the number of values ​​for the precoding information and the number of layers is 1.

[0205] The second SRS information includes the number of SRS ports.

[0206] In step S210, the transmission mode is transmitted to the first communication node.

[0207] The first communication node reports the capability of the first communication node to the second communication node, and the second communication node configures a transmission mode for the first communication node according to the capability of the first communication node and transmits the transmission mode to the first communication node.

[0208] Step S210 is an optional step. If the first communication node independently determines the transmission mode of the first communication node after reporting the capabilities of the first communication node to the second communication node, it is not necessary to execute Step S210.

[0209] The transmission mode includes at least one of the first mode and the second mode.

[0210] In step S220, a transmission transmitted by the first communication node is received according to at least one of a codebook or a transmission power ratio; wherein at least one of the codebook or a transmission power ratio is determined by the first communication node according to the transmission mode of the first communication node.

[0211] In an embodiment of the present application, a second communication node may receive a transmission transmitted by a first communication node according to at least one of a codebook or a transmission power ratio, and at least one of the codebook or the transmission power ratio is determined by the first communication node according to the transmission mode of the first communication node. In this way, the transmission and reception performance of the antenna can be improved, and at the same time, a plurality of types of communication nodes are adapted, and universality is improved.

[0212] Some exemplary embodiments are listed below to illustrate the transmission method provided by the embodiments of the present application.

[0213] In a first exemplary embodiment, to support codebook-based PUSCH full power transmission, the parameters configured by RRC for an SRS resource set may support multiple SRS resources configured with different numbers of ports. The UE needs to obtain the value of SRI from DCI, and as a result, the fields for precoding information and the number of layers may be determined according to the number of ports supported by the SRS resources of SRI. However, the size of the fields for precoding information and the number of layers may be best obtained according to RRC information rather than being determined according to other fields within the same DCI. Thus, the size of the fields for precoding information and the number of layers is determined by the maximum number of ports among the number of ports of the SRS resources within the SRS resource set.

[0214] If the number of ports of the SRS resource corresponding to the indicated SRI is less than the maximum number of ports, the actual number of bits required by the fields of precoding information and the number of layers may also be relatively small. In this case, the extra bits in the fields of precoding information and the number of layers, other than the actual number of bits required (i.e., the required indicated bits), are repetitions of the actual number of bits required. In this way, reception robustness is improved.

[0215] Alternatively, if the number of ports of the SRS resource corresponding to the indicated SRI is less than the maximum number of ports, the actual number of bits required by the fields of precoding information and the number of layers may also be relatively small. In this case, the extra bits in the fields of precoding information and the number of layers, other than the actual number of bits required (i.e., the required indication bits), are set to a predefined value, and in this method, the predefined value may be used for receive checks.

[0216] For example, the SRS resource set supports three SRS resources represented by SRI 0, SRI 1, and SRI 2 in DCI, respectively. The SRS resource of SRI 0 supports four ports, the SRS resource of SRI 1 supports two ports, and the SRS resource of SRI 2 supports one port. Therefore, the size of the fields for precoding information and the number of layers in DCI is determined by the maximum number of ports among the ports of the SRS resources within the SRS resource set, namely four ports. This can be verified from Table 2 and Table 3.

[0217] It is assumed that the maximum rank of the UE is 2, the codebookSubset parameter is noncoherent, and the size of the field for precoding information and the number of layers is 4 bits. FIG. 4 is a diagram illustrating the correspondence between the DCI and the field for precoding information and the number of layers according to one embodiment. As shown in FIG. 4, when SRI 0 is indicated in the DCI, the field for precoding information and the number of layers has 12 valid indicators, and 4 bits are all valid bits, which are indicated by b_x, b_x+1, b_x+2, and b_x+3, respectively. When SRI 1 is indicated in the DCI, the field for precoding information and the number of layers has 3 valid indicators, as shown in FIG. 4, and thus, the field for precoding information and the number of layers becomes 2 bits. That is, bits b_x and b_x+1 are the actual bits required, and bits b_x+2 and b_x+3 are extra bits, and b_x+2 and b_x+3 may have the same content as bits b_x and b_x+1; alternatively, the two extra bits are set to predefined values, for example, bits b_x+2 and b_x+3 are set to "00". When SRI 2 is displayed in DCI, since only 1 bit exists, the fields for precoding information and number of layers do not need to display TPMI and the number of layers. The actual number of bits required by the fields for precoding information and number of layers is 0. In this case, bits b_x, b_x+1, b_x+2, and b_x+3 are set to "0000".

[0218] In a second exemplary embodiment, to support codebook-based PUSCH full power transmission, the SRS resource set, which is a parameter configured by the RRC, may support multiple SRS resources configured with different numbers of ports. The UE needs to obtain the value of SRI from the DCI, and as a result, the fields for precoding information and the number of layers may be determined according to the number of ports supported by the SRS resources of the SRI. However, the size of the fields for precoding information and the number of layers may be best obtained according to the RRC information rather than being determined according to other fields within the same DCI. In the first embodiment described above, the size of the fields for precoding information and the number of layers is determined by the maximum number of ports among the number of ports of the SRS resources within the SRS resource set. Another method of dividing SRS information into two parts is proposed herein. The two parts are each carried out from two fields of the DCI as follows.

[0219] SRS information is divided into two parts. The first part indicates an SRS group referred to as the first SRS information, and the second part is a serial number of an SRS resource within the SRS group referred to as the second SRS information. The first SRS information is associated with at least one of a spatial relationship, a panel, or a beam; and the second SRS information is indicated jointly with precoding information and the number of layers.

[0220] DCI includes a field for displaying first SRS information and an information field jointly displayed by second SRS information, precoding information, and the number of layers.

[0221] For example, an SRS resource set supports six SRS resources. These six SRS resources are divided into two groups. The first group includes SRI 0-0, SRI 0-1, and SRI 0-2, and the supported number of ports is 4, 2, and 1, respectively. The second group includes SRI 1-0, SRI 1-1, and SRI 1-2, and the supported number of ports is 4, 2, and 1, respectively. Since the SRS resource set includes two groups of SRS resources, the DCI includes a 1-bit field to indicate the first SRS information. 0 represents the first group, and 1 represents the second group.

[0222] The second SRS information indicates the serial number of an SRI within the SRI group indicated by the first SRS information, and this information is indicated jointly with the number of precoding information and layers. The number of antenna ports of the second SRS information is obtained according to the information field indicated jointly by the second SRS information, precoding information, and the number of layers, and the serial number of an SRI within the SRI group is determined according to the number of antenna ports. As shown in Table 12 below, if the first SRS information is 1 and the value of the information field indicated jointly by the second SRS information, precoding information, and the number of layers is 4 antenna ports, this corresponds to SRI 1-0; if the first SRS information is 0 and the value of the information field indicated jointly by the second SRS information, precoding information, and the number of layers is 1 antenna port, this corresponds to SRI 0-2.

[0223]

[0224]

[0225]

[0226]

[0227]

[0228]

[0229] The advantage of splitting the SRS information into two parts to be displayed is that the overhead of the DCI for displaying the SRI is saved. In the first exemplary embodiment described above, when the SRI is displayed in one field, 3 bits are required; when 3 bits are allocated for two fields, the first SRS information requires 1 bit, and the additional display of the second SRS information adds only 1 bit to the fields for precoding information and the number of layers, or no additional bits are added. When the maximum number of antenna ports is 4 and the maximum rank is 2, 3, or 4, 1 bit is added for a UE whose codebookSubset parameter is fullyAndPartialAndNonCoherent or partialAndNonCoherent, and no bits are added for a UE whose codebookSubset parameter is nonCoherent. This is equivalent to the SRS information requiring only 1 or 2 bits of overhead in the DCI, saving 1 to 2 bits compared to the 3-bit overhead. In the case of 1 antenna port and 1 layer, there are no multiple antennas, and therefore TPMI is not configured to display precoding.

[0230] When the maximum number of antenna ports is 4 and the maximum rank is 1, as shown in Table 13 below, no bits are added for UEs whose codebookSubset parameter is nonCoherent or partialAndNonCoherent, and 1 bit is added for UEs whose codebookSubset parameter is fullyAndPartialAndNonCoherent.

[0231]

[0232]

[0233]

[0234] If maxRank = 2 or maxRank = 3, the tables may be configured independently to reduce overhead.

[0235] Referring to Table 12, it can be seen that Table 12 corresponds to cases where maxRank = 2, 3, or 4. Depending on the requirements, Table 12 may also be divided into three tables corresponding to maxRank = 2, maxRank = 3, and maxRank = 4, respectively. The values ​​of the information regarding the number of precoding information and layers for cases where maxRank = 2 or maxRank = 3 are a subset of the values ​​of the information regarding the number of precoding information and layers for cases where maxRank = 4. Therefore, the number of bits for the fields regarding the number of precoding information and layers for cases where maxRank = 2 or maxRank = 3 may be smaller than the number of bits for the fields regarding the number of precoding information and layers for cases where maxRank = 4.

[0236] For example, an SRS resource set supports four SRS resources. These four SRS resources are divided into two groups. The first group includes SRI 0-0 and SRI 0-1, and the number of supported ports is 2 and 1, respectively. The second group includes SRI 1-0 and SRI 1-1, and the number of supported ports is 2 and 1, respectively. Since the SRS resource set includes two groups of SRS resources, the DCI includes a 1-bit field to indicate the first SRS information. 0 represents the first group, and 1 represents the second group.

[0237] The second SRS information refers to the serial number of an SRI within an SRI group indicated by the first SRS information, and this information is displayed jointly with the precoding information and the number of layers. The number of antenna ports in the second SRS information is obtained according to the information field displayed jointly by the second SRS information, the precoding information, and the number of layers, and the serial number of an SRI within an SRI group is determined according to the number of antenna ports.

[0238] The advantage of splitting the SRS information into two parts to be displayed is that the overhead of the DCI for displaying the SRI is saved. If the SRIs of the four SRS resources mentioned above are displayed in one field, 2 bits are required; if 2 bits are allocated for two fields, the first SRS information requires 1 bit, and the additional display of the second SRS information adds only 1 bit to the fields for precoding information and the number of layers, or no additional bits are added. Referring to Table 14, if the maximum number of antenna ports is 4 and the maximum rank is 2, no bits are added. This is equivalent to the SRS information requiring only 1 or 2 bits of overhead in the DCI, and in some cases, 1 bit is saved compared to 2 bits of overhead. Note that in the case of 1 antenna port and 1 layer, there are no multiple antennas, and as a result, the TPMI is not configured to display the precoding.

[0239]

[0240]

[0241] When the maximum number of antenna ports is 2 and the maximum rank is 1, referring to Table 15, 1 bit is added for UEs whose codebookSubset parameter is nonCoherent, and no bit is added for UEs whose codebookSubset parameter is fullyAndPartialAndNonCoherent.

[0242]

[0243] In the related technology, when codebook-based PUSCH transmission is performed using multiple antenna ports, each antenna port may use only up to 1 / N of the maximum transmit power, where N is the maximum number of antenna ports supported by the UE. If the precoding matrix corresponding to TPMI has antenna ports with 0 elements on all layers, it indicates that the PUSCH transmission has no power on the antenna port. The sum of the powers of the other antenna ports cannot reach the UE's maximum transmit power. For example, the precoding matrix indicated by TPMI 0 in Table 1 In this case, since one antenna port is 0, only half the power is supported for transmission. With the advancement of technology, the cost of components is becoming increasingly lower, and it is becoming possible for a single antenna port to support the full power.

[0244] Furthermore, in the related technology, as illustrated in Tables 2 through 5, when the codebookSubset parameter is fullyAndPartialAndNonCoherent, a universal set of TPMIs displayed for the UE is supported, and when the codebookSubset parameter is partialAndNonCoherent or NonCoherent, the TPMIs displayed for the UE support only a portion of the TPMI set. The reason for this is to prevent simultaneous transmission of antenna ports without coherent capability. For example, in the case of a UE with two antenna ports and non-coherent capability, when one layer of transmission is transmitted, Only a precoding matrix selected by the antenna port, such as, may be used, and A precoding matrix having two antenna ports, such as the one above, cannot be used. Consequently, when one layer of transmission is transmitted, two antenna ports cannot be used, and therefore the full power cannot be reached.

[0245] To solve the above problems, the present application improves the related technology in two aspects.

[0246] In the first mode, the TPMI set supported by the UE whose codebookSubset parameter is partialAndNonCoherent or NonCoherent is extended.

[0247] In the second mode, the base station configures at least one set of SRS resources for the UE, and the set of SRS resources includes at least one SRS resource. If the number of SRS resources is greater than 1, the number of ports supported by the SRS resources may vary. Power capability reachable by the UE, determined by TPMI, is supported.

[0248] For example, the UE supports up to 4 antenna ports, and the base station configures one set of SRS resources with codebook usage for the UE, and the set of SRS resources includes 3 SRS resources. The number of ports supported by the 3 SRS resources is 4, 2, and 1, respectively. The number of ports supported by the SRS resource with 2 ports and the number of ports supported by the SRS resource with 1 port are less than the maximum number of ports (4), and thus these 2 SRS resources may be virtual ports, i.e., ports formed by multiple physical antenna chains, or the UE may decide to transmit uplink transmissions of 2 ports and 1 port using only a portion of the physical antenna chain. In summary, the physical antenna chain is transparent to the base station. Therefore, the UE needs to notify the base station of the UE's power capability at different TPMIs for SRS resources with different numbers of ports.

[0249] In a third exemplary embodiment, the present application supports one of the extension methods described below for the first mode.

[0250] In Method 1, for a UE whose codebookSubset parameter is partialAndNonCoherent, the supported TPMI set is extended to a universal set of TPMI sets whose codebookSubset parameter is fullyAndPartialAndNonCoherent.

[0251] For a UE whose codebookSubset parameter is partialAndNonCoherent or nonCoherent, the newly extended TPMI precoding matrix exceeds the UE's coherent capability. Therefore, the base station does not require the UE to transmit uplink transmissions at the phase difference of the antenna port required by the precoding matrix corresponding to TPMI. For a TPMI precoding matrix that exceeds the UE's coherent capability, the UE may change the phase difference of the antenna port.

[0252] In Method 2, for a UE whose codebookSubset parameter is partialAndNonCoherent or nonCoherent, the supported TPMI set is extended to a subset of the TPMI set whose codebookSubset parameter is fullyAndPartialAndNonCoherent, as shown in Tables 16, 17, 18, and 19.

[0253]

[0254]

[0255]

[0256]

[0257]

[0258]

[0259]

[0260]

[0261] For a UE with 4 antenna ports and its codebookSubset parameter being noncoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the following cases.

[0262] 1 layer: TPMI = 4; 1 layer: TPMI = 8; 1 layer: TPMI = 12; 2 layers: TPMI = 6; 2 layers: TPMI = 14; 3 layers: TPMI = 1; 3 layers: TPMI = 3; 4 layers: TPMI = 1; or 4 layers: TPMI = 3.

[0263] For a UE with 4 antenna ports and its codebookSubset parameter being partialAndNonCoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the following cases.

[0264] 1 layer: TPMI = 12; 2 layers: TPMI = 14; 3 layers: TPMI = 3; or 4 layers: TPMI = 3.

[0265] The correspondence between the extended information on the number of precoding information and layers and the values ​​of the fields for the number of precoding information and layers may be implemented in a number of ways, as shown in Tables 16 and 17.

[0266] Table 16 corresponds to cases where maxRank = 2, 3, or 4. Depending on the requirements, Table 16 may also be divided into three tables corresponding to cases where maxRank = 2, maxRank = 3, and maxRank = 4, respectively. The values ​​of the information regarding the number of precoding information and layers for cases where maxRank = 2 or maxRank = 3 are a subset of the values ​​of the information regarding the number of precoding information and layers for cases where maxRank = 4. Therefore, the number of bits for the fields regarding the number of precoding information and layers for cases where maxRank = 2 or maxRank = 3 may be smaller than the number of bits for the fields regarding the number of precoding information and layers for cases where maxRank = 4.

[0267] For UEs with 2 antenna ports and whose codebookSubset parameter is noncoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the following cases.

[0268] 1 layer: TPMI = 2; or 2 layers: TPMI = 1.

[0269] The correspondence between the extended information on the number of precoding information and layers and the values ​​of the fields for the number of precoding information and layers may be implemented in a number of ways, as shown in Tables 18 and 19.

[0270] In Method 3, for a UE whose codebookSubset parameter is partialAndNonCoherent or nonCoherent, the supported TPMI set is extended to a new supported TPMI set. The new TPMI set is, as shown in Tables 20, 21, 22, 23, 24, and 25, primarily for cases where the phase difference between ports that do not have coherent capability is an arbitrary phase difference, or where the phase difference is determined by the UE.

[0271]

[0272]

[0273]

[0274]

[0275]

[0276]

[0277] The new TPMI set includes at least one of the precoding matrices described below.

[0278] ,

[0279] Here, α, β, and γ are all complex numbers with constant modulus.

[0280] When using these new TPMIs, the values ​​of the extended TPMIs in the codebook set may also be updated.

[0281] For a UE with 4 antenna ports and its codebookSubset parameter being noncoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the cases described below.

[0282] 1 layer: TPMI = 28; 1 ​​layer: TPMI = 29; 1 layer: TPMI = 30 (see Table 21 or 22); 2 layers: TPMI = 22 (see Table 24); or 3 layers: TPMI = 7 (see Table 25).

[0283] For a UE with 4 antenna ports and its own codebookSubset parameter is partialAndNonCoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the cases described below.

[0284] 1 layer: TPMI = 31; 1 layer: TPMI = 32; 1 layer: TPMI = 33; 1 layer: TPMI = 34 (see Table 21 or 22); 1 layer: TPMI = 35; 1 layer: TPMI = 36; 1 layer: TPMI = 37; or 1 layer: TPMI = 38 (see Table 21).

[0285] For a UE with 2 antenna ports and its codebookSubset parameter being noncoherent, the fields for precoding information and the number of layers need to be extended and include at least one of the cases described below.

[0286] 1 layer: TPMI = 5 (see Table 20).

[0287] The fourth embodiment is a design that reports power capability based on TPMI (group) / antenna ports.

[0288] In the case of the second mode, it is supported that the achievable power capability is determined by TPMI.

[0289] The UE reports the power capability of the TPMI supported by the UE for different numbers of ports.

[0290] It is assumed that the set of TPMIs supported by the UE is not extended, that is, that the TPMIs supported by the UE are shown in Tables 2 through 5, and that the UE reports the power capability that may be reached by all TPMIs supported by the UE.

[0291] In one embodiment, the UE reports the power capability of a TPMI having a precoding matrix having all-zero-ports for a different number of ports, and the TPMI is within a set of TPMIs supported by the UE.

[0292] It is assumed that the set of TPMIs supported by the UE is not extended, that is, that the TPMIs supported by the UE are shown in Tables 2 through 5, that the UE reports the power capability of the TPMIs having a precoding matrix with all-zero ports in terms of a different number of ports, and that the TPMIs are within the set of TPMIs supported by the UE.

[0293] A TPMI having a precoding matrix with an all-zero port indicates that the precoding matrix corresponding to the TPMI has a row containing all elements of zero. The rows of the precoding matrix correspond one-to-one with the antenna ports; that is, a row containing all elements of zero corresponds to an antenna port having all precoding elements of zero, which is also referred to as a zero-power antenna port. For example, the precoding matrix corresponding to TPMI 0 in Table 1 The second row is all 0s, and the UE must report the power capability supported by this TPMI. As another example, the precoding matrix corresponding to TPMI 0 in Table 8. The third and fourth rows are both 0, and the UE must report the power capability supported by this TPMI.

[0294] In one embodiment, when the number of antenna ports is 4, the TPMI having all zero ports includes at least one of the cases described below.

[0295] 1 layer: TPMI = 0, 1, ... or 11; 2 layers: TPMI = 0, 1, 2, 3, 4 or 5; or 3 layers: TPMI = 0.

[0296] When the number of antenna ports is 2, the TPMI having an all-zero port includes at least one of the cases described below.

[0297] 1 layer: TPMI= 0 or 1.

[0298] In one embodiment, depending on the coherent capability of the UE, only the power capability of the non-coherent capability or partially coherent capability of the UE reporting the power capability of the TPMI supported by the UE is supported.

[0299] In one embodiment, depending on the coherent capability of the UE, only the power capability of a TPMI having a precoding matrix having all zero ports, each having an all-zero port in terms of a different number of ports, is supported for a non-coherent or partially coherent UE, and the TPMI is within the set of TPMIs supported by the UE.

[0300] In one embodiment, a UE of coherent capability reports the power capability of a TPMI having a precoding matrix having all-zero ports in terms of a different number of ports, and the TPMI is within a set of TPMIs supported by the UE.

[0301] In one embodiment, the UE of the second mode reports the power capability of a TPMI having a precoding matrix having all zero ports, each with different numbers of ports, and it is supported that the TPMI is within a set of TPMIs supported by the UE.

[0302] The reported power capability of the TPMI may be whether it reaches the UE's maximum transmit power or the maximum power rating supported by the TPMI. The supported maximum power rating refers to the ratio of the UE's maximum transmit power to the maximum power supported by the TPMI, e.g., 1, 1 / 2, or 1 / 4.

[0303] In addition to the above report of power capability based on TPMI, the UE may also report power capability based on antenna ports.

[0304] The power capability of the antenna port may be the same as the power capability of the TPMI, that is, whether the UE's maximum transmit power can be reached or whether the maximum power rating supported by the antenna port can be reached. The supported maximum power rating refers to the ratio of the UE's maximum transmit power to the maximum power independently supported by the antenna port, e.g., 1, 1 / 2, or 1 / 4.

[0305] For a UE supporting four antenna ports, the serial numbers of the antenna ports are 0, 1, 2, and 3, and the power capabilities independently supported by each of the four antenna ports are reported. For example, the maximum power rating supported by antenna port 0 is 1, the maximum power rating supported by antenna port 1 is 1 / 2, and the maximum power ratings supported by antenna ports 2 and 3 are both 1 / 4. Each antenna port requires 2 bits, and the four antenna ports require 8 bits. If the power capability of an antenna port is expressed by whether it reaches the UE's maximum transmit power, each antenna port requires 1 bit. If only antenna port 0 can reach the UE's maximum transmit power and the other antenna ports cannot, in this manner, the four antenna ports require 4 bits.

[0306] For a UE supporting two antenna ports, the antenna port serial numbers are 0 and 1, and the power capabilities independently supported by the two antenna ports are reported respectively. For example, the maximum power rating supported by antenna port 0 is 1, and the maximum power rating supported by antenna port 1 is 1 / 2. Each antenna port requires 2 bits, and two antenna ports require 4 bits. If the power capability of an antenna port is expressed by whether it reaches the UE's maximum transmit power, each antenna port requires 1 bit. If only antenna port 0 can reach the UE's maximum transmit power and antenna port 1 cannot, in this manner, two antenna ports require 2 bits.

[0307] In one embodiment, the combination of TPMIs whose power needs to be reported may be optimized due to the placement features of a number of parameters of the actual UE (PA, e.g., UE-specific parameters).

[0308] The all-zero port is also referred to as the zero port or zero power port.

[0309] The port described herein may include one of an antenna port, a reference signal port, an SRS port, or a demodulation reference signal (DMRS) port.

[0310] Due to limitations of PA in actual applications, the TPMI method that supports full power may be optimized.

[0311] A limitation of the PA is that if only some of the antenna ports support full power, some of the antenna ports supporting full power may be antenna ports with relatively small serial numbers or antenna ports with relatively high rankings in a predefined antenna port order.

[0312] A UE that supports four antenna ports with serial numbers 0, 1, 2, and 3 may also support the full power scheme described below.

[0313] 1. Only the antenna port with serial number 0 supports full power; 2. Only the antenna ports with serial numbers 0 and 1 support full power independently; 3. Only the antenna ports with serial numbers 0 and 2 support full power independently; and 4. All four antenna ports support full power independently.

[0314] The UE reports one of the above power capability information to the base station, and the base station obtains the power capability of the TPMI according to the power capability information and determines the precoding matrix used for the UE's transmission.

[0315] For 4 antenna ports, one of the above 4 methods needs to be displayed, and 2 bits are required.

[0316] For two antenna ports, one of the two methods described below needs to be displayed, and 1 bit is required.

[0317] 1. Only the antenna port with serial number 0 supports full power; 2. The antenna ports with serial numbers 0 and 1 support full power independently.

[0318] In one embodiment, the UE may also report only the power capability of a TPMI having a single antenna port that is for a single layer and is non-zero power. In the case of a TPMI having multiple non-zero power antenna ports and a multi-layer TPMI, the maximum supported power is determined by the power capability of a TPMI where the single layer and single antenna port are non-zero power.

[0319] For example, in the case of 4 ports, only the maximum power of TPMI 0 through 3 of a single layer is reported. It is assumed that TPMI 0 and TPMI 1 support the UE's maximum transmit power, and that the maximum power supported by TPMI 2 and TPMI 3 is 1 / 4 of the UE's maximum transmit power. Then, in Table 7, TPMI 4 The maximum power supported by it may be 3 / 2 times the UE's maximum transmit power. A maximum transmit power that does not exceed the UE's maximum transmit power is considered, and the maximum power supported by TPMI 4 in Table 7 may be 1 times the UE's maximum transmit power. It is similar for multilayer TPMI. For example, for TPMI 0 in Table 8, the corresponding matrix is And, the maximum supported power is 1 times the maximum transmit power of the UE.

[0320] The above method of a port supporting full power may also be used in a TPMI method supporting full power. For example, a UE supporting four antenna ports may support the full power method described below.

[0321] 1. TPMI 0 of 1 layer and 4 antenna ports supports full power; 2. Both TPMI 0 and TPMI 1 of 1 layer and 4 antenna ports support full power; 3. Both TPMI 0 and TPMI 2 of 1 layer and 4 antenna ports support full power; and 4. All TPMI 0 through TPMI 3 of 1 layer and 4 antenna ports support full power.

[0322] The UE reports one of the above power capability information to the base station, and the base station obtains the power capability of the TPMI according to the power capability information and determines the precoding matrix used for the UE's transmission.

[0323] For 4 antenna ports, one of the above 4 methods needs to be displayed, and 2 bits are required.

[0324] For two antenna ports, one of the two methods described below needs to be displayed, and 1 bit is required.

[0325] 1. TPMI 0 of 1 layer and 2 antenna ports supports full power; and 2. Both TPMI 0 and TPMI 1 of 1 layer and 2 antenna ports support full power.

[0326] In the fifth exemplary implementation, limitations on configuring the SRS resource set are described.

[0327] For the first communication node, the SRS resource within the SRS resource set has at least one of the features described below.

[0328] The number of SRS groups does not exceed a predefined value X1, for example, X1 = 2.

[0329] The number of spatial relationships associated with an SRS resource within an SRS resource set does not exceed a predefined value X2, for example, X2 = 2.

[0330] The number of panels associated with an SRS resource within an SRS resource set does not exceed the predefined value X3.

[0331] The number of different port numbers among the number of ports associated with an SRS resource within an SRS resource set does not exceed a predefined value X4, e.g., X4 = 2. For a non-coherent UE with up to 2 ports, the SRS resource set includes two SRS resources configured with 1 port and 2 ports, respectively; for a coherent UE with up to 2 ports, the SRS resource set includes one SRS resource configured with 2 ports. For a non-coherent UE with up to 4 ports, the SRS resource set includes two SRS resources configured with 1 port and 2 ports, respectively; for a partially coherent UE with up to 4 ports, the SRS resource set includes two SRS resources configured with 2 ports and 4 ports, respectively; for a coherent UE with up to 4 ports, the SRS resource set includes one SRS resource configured with 4 ports.

[0332] The number of SRS resources within an SRS resource set does not exceed the predefined value X5.

[0333] The number of open-loop power control parameters configured for an SRS resource set does not exceed the predefined value X6.

[0334] The number of closed-loop power control parameters configured for an SRS resource set does not exceed the predefined value X7.

[0335] The number of path loss measurement parameters configured for an SRS resource set does not exceed the predefined value X8.

[0336] The number of open-loop power control parameters configured for all SRS resources within the SRS resource set does not exceed the predefined value X9.

[0337] The number of closed-loop power control parameters configured for all SRS resources within an SRS resource set does not exceed the predefined value X10.

[0338] The number of path loss measurement parameters configured for all SRS resources within the SRS resource set does not exceed the predefined value X11.

[0339] In this document, the values ​​of X1 to X15 are positive integers.

[0340] FIG. 5 is a structural diagram of a transmitting device according to one embodiment. The transmitting device may be configured in a transmitting terminal. As shown in FIG. 5, the transmitting device includes a determination module (10) and a transmitting module (11).

[0341] The determination module (10) is configured to determine the transmission mode of the first communication node and to determine at least one of a codebook or a transmission power ratio according to the transmission mode; and the transmission module (11) is configured to transmit the transmission according to at least one of the codebook or the transmission power ratio.

[0342] The transmitting device provided by the present embodiment is configured to implement the transmitting method of the embodiment illustrated in FIG. 1 and FIG. 2. The implementation principles and effects of the transmitting device provided by the present embodiment are similar and are not repeated herein.

[0343] In one embodiment, in conjunction with FIG. 5, FIG. 6 is a structural diagram of another transmitting device according to one embodiment. The device further includes a receiving module (12).

[0344] The receiving module (12) is configured to receive a transmission mode transmitted by the second communication node.

[0345] In one embodiment, the transmission mode includes at least one of a first mode and a second mode.

[0346] In one embodiment, when the transmission mode is a first mode, the first communication has at least one of the features described below.

[0347] The first communication node transmits one layer of transmission over more than X ports. X is determined by the coherent capability of the first communication node. The first communication node transmits one layer of transmission by using at least two ports without coherence. All SRS resources within the set of SRS resources having the usage of the codebook configured for the first communication node in the first mode support the same number of SRS ports.

[0348] In one embodiment, if the transmitting coherent characteristic of the first communication node is non-coherent, X = 1; and / or if the transmitting coherent characteristic of the first communication node is partially coherent, X = 2.

[0349] In one embodiment, when a first communication node transmits one layer of transmission by using at least two ports without coherence, the phase difference between at least two ports is random; or when a transmission precoding matrix indicator (TPMI) exceeding the coherent capability of the first communication node is used, the first communication node is allowed to change the phase of the antenna port.

[0350] In one embodiment, when the transmission mode is a second mode, the first communication node has at least one of the features described below.

[0351] If the first communication node supports transmission on a port whose number is less than the number of configured ports, or if there are rows of all zeros in the precoding matrix corresponding to the TPMI used by transmission, or if there is a zero-power port in the precoding matrix corresponding to the TPMI used by transmission, the power of each port is determined by the power capability of the first communication node; among the number of SRS ports supported by different SRS resources within the SRS resource set, the number of different numbers is one or more, and the SRS resource set is configured for the first communication node in the second mode having the usage of the codebook.

[0352] In one embodiment, when the first transmission mode is the first mode, the determination module (10) is configured to support a codebook containing an extended TPMI set or a full power state by a first communication node whose codebookSubset parameter is partialAndNonCoherent or nonCoherent.

[0353] In one embodiment, a transmission supporting a full power state has at least one of the features described below.

[0354] The number of layers is 1; TPMI is a reserved value; transmission is transmitted by using all ports configured for the SRS resources associated with the transmission; transmission has the same power on all non-zero power ports; the transmission precoding has the same modulus value on all non-zero power ports; the phase of the transmission precoding on all non-zero power ports depends on the first communication node; or the transmission precoding depends on the first communication node.

[0355] In one embodiment, the total power status is displayed in the total power status display field of the control information scheduling the transmission, or in one of the fields of the precoding information and the number of layers.

[0356] In one embodiment, the extended TPMI set has at least one of the features described below.

[0357] The extended TPMI set is a general set of TPMI sets whose codebookSubset parameter is fullyAndPartialAndNonCoherent; the extended TPMI set is a subset of TPMI sets whose codebookSubset parameter is fullyAndPartialAndNonCoherent; or there exists a random phase difference between the ports of the precoding matrix of the extended TPMI set.

[0358] In one embodiment, the extended TPMI set includes at least one of the precoding matrices described below.

[0359] ,

[0360] Here, α, β, and γ are all complex numbers with constant modulus.

[0361] In one embodiment, the value of a constant modulus complex number (α, β and γ) is determined by at least one of the parameters described below:

[0362] A serial number in the frequency domain, a serial number in the time domain, or a serial number of a modulated and coded symbol.

[0363] In one embodiment, the decision module (10) is configured to implement at least one of the methods described below.

[0364] In response to the transmission mode being the second mode, the transmission power ratio is determined according to the power capability of the TPMI of the transmission; in response to the transmission mode being the first mode, the transmission power ratio is determined according to the number of ports of the SRS resource corresponding to the transmission; or in response to the transmission mode being the first mode, the transmission power ratio is determined according to the maximum number of ports of all SRS resources within the set of SRS resources corresponding to the transmission.

[0365] In one embodiment, the decision module (10) is configured to implement at least one of the methods described below.

[0366] The power capability of a subset or universal set of TPMI having a precoding matrix having zero ports is transmitted to a second communication node, wherein the TPMI is within a set of TPMI supported by a first communication node; the power capability of a subset or universal set of TPMI having a precoding matrix having zero ports is transmitted to a second communication node, wherein the TPMI is within a set of TPMI supported by a first communication node and corresponds to a different number of ports, respectively; the power capability supported by each port corresponding to a different number of ports, respectively is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined TPMI is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined port is transmitted to the second communication node; at least one power capability of a set of power capabilities supported by a predefined TPMI and corresponding to a different number of ports, respectively is transmitted to the second communication node; or at least one power capability of a set of power capabilities supported by a predefined port and corresponding to a different number of ports, respectively is transmitted to the second communication node.

[0367] In one embodiment, a set of power capabilities supported by a predefined TPMI includes at least one of the power capabilities described below;

[0368] Power capability supported by TPMI 0 of 1 layer and 4 antenna ports; Power capability supported by TPMI 1 of 1 layer and 4 antenna ports; Power capability supported by TPMI 2 of 1 layer and 4 antenna ports; Power capability supported by TPMI 3 of 1 layer and 4 antenna ports; Total power capability supported by TPMI 0 of 1 layer and 4 antenna ports; Total power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 4 antenna ports; Total power capability supported by both TPMI 0 and TPMI 2 of 1 layer and 4 antenna ports; Total power capability supported by all TPMI 0 through TPMI 3 of 1 layer and 4 antenna ports; Power capability supported by TPMI 0 of 1 layer and 2 antenna ports; Power capability supported by TPMI 1 of 1 layer and 2 antenna ports; full power capability supported by TPMI 0 of 1 layer and 2 antenna ports; or full power capability supported by both TPMI 0 and TPMI 1 of 1 layer and 2 antenna ports.

[0369] In one embodiment, a set of power capabilities supported by a predefined port includes at least one of the power capabilities described below:

[0370] Power capability supported by Port 0 of 4 antenna ports; power capability supported by Port 1 of 4 antenna ports; power capability supported by Port 2 of 4 antenna ports; power capability supported by Port 3 of 4 antenna ports; total power capability supported by Port 0 of 4 antenna ports; total power capability supported by both Port 0 and Port 1 of 4 antenna ports; total power capability supported by both Port 0 and Port 2 of 4 antenna ports; total power capability supported by all Ports 0 through 3 of 4 antenna ports; power capability supported by Port 0 of 2 antenna ports; power capability supported by Port 1 of 2 antenna ports; total power capability supported by Port 0 of 2 antenna ports; or total power capability supported by both Port 0 and Port 1 of 2 antenna ports.

[0371] In one embodiment, the first communication node includes at least one of the features described below.

[0372] In response to TPMI 0 of one layer and four antenna ports supporting full power capability or Port 0 of the four antenna ports supporting full power capability, a TPMI within a 4-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 0 supports full power capability; in response to TPMI 1 of one layer and four antenna ports supporting full power capability or Port 1 of the four antenna ports supporting full power capability, a TPMI within a 4-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 1 supports full power capability; in response to TPMI 2 of one layer and four antenna ports supporting full power capability or Port 2 of the four antenna ports supporting full power capability, a TPMI within a 4-antenna TPMI set having a precoding matrix supported by a first communication node and having a non-zero port 2 supports full power capability; In response to TPMI 3 of one layer and four antenna ports supporting full power capability, or Port 3 of the four antenna ports supporting full power capability, a TPMI within a 4-antenna TPMI set supported by a first communication node and having a precoding matrix with a non-zero port 3 supports full power capability; in response to TPMI 0 of one layer and two antenna ports supporting full power capability, or Port 0 of the two antenna ports supporting full power capability, a TPMI within a 2-antenna TPMI set supported by a first communication node and having a precoding matrix with a non-zero port 0 supports full power capability;Or, in response to TPMI 1 of one layer and two antenna ports supporting full power capability or port 1 of the two antenna ports supporting full power capability, a TPMI within a set of two antenna TPMIs having a precoding matrix supported by a first communication node and having a non-zero port 1 supports full power capability; whereby the power capability of the TPMI supported by the first communication node is the smaller value between the sum of the powers supported by all non-zero ports of the TPMI and the maximum transmit power of the first communication node; and if the number of non-zero ports of the TPMI supported by the first communication node is zero, the TPMI supports full power capability.

[0373] In one embodiment, the power capability includes whether it reaches the maximum transmission power of the first communication node; or at least one of the power ratings; wherein the power rating is the ratio of the power capability to the maximum transmission power of the first communication node.

[0374] In one embodiment, the receiving module (12) is further configured to receive scheduling information of a transmission transmitted by a second communication node.

[0375] In one embodiment, scheduling information for transmission is returned in at least one of the following information: radio resource control (RRC) signaling, a media access control element (MAC CE), or physical layer signaling. The physical layer signaling includes at least one of a physical downlink control channel (PDCCH) or downlink control information (DCI).

[0376] In one embodiment, the number of bits (M) for the fields of precoding information and the number of layers in physical layer signaling is determined by at least one of the items described below.

[0377] A maximum number of ports of an SRS resource within an SRS resource set corresponding to either a first communication node or a transmission; a number of ports of an SRS resource corresponding to a transmission; a maximum number of layers or a maximum rank; a number of bits configured by a second communication node and for fields of precoding information and the number of layers; or a predefined number of bits for fields of precoding information and the number of layers.

[0378] In one embodiment, the precoding information and the number of layers indicated by the values ​​of the fields of precoding information and the number of layers in physical layer signaling are analyzed by at least one of the information described below.

[0379] The number of ports of the SRS resource corresponding to transmission; the maximum number of layers or the maximum rank of the first communication node; or the actual maximum number of layers or the actual maximum rank.

[0380] In one embodiment, in response to the number of ports of an SRS resource corresponding to transmission being less than the maximum number of ports of an SRS resource within an SRS resource set, the number of required indication bits for the number of precoding information and layers corresponding to transmission is N, where N is less than or equal to M.

[0381] In one embodiment, in physical layer signaling, the M bits for the field of precoding information and the number of layers include N required indication bits for precoding information and the number of layers, and the remaining (M - N) bits are repetitions or preset values ​​of the N required indication bits for precoding information and the number of layers.

[0382] In one embodiment, physical layer signaling includes SRS information, and the SRS information is used to indicate an SRS resource within the SRS resource set of the first communication node.

[0383] In one embodiment, the SRS resource is associated with at least one of a spatial relationship, a panel, or a beam.

[0384] In one embodiment, an SRS resource within an SRS resource set is determined according to one of the features described below.

[0385] SRS resources associated with the same spatial relationship belong to one SRS group; SRS resources associated with the same panel belong to one SRS group; SRS resources associated with the same beam belong to one SRS group; SRS resources whose associated beam has a QCL relationship belong to one SRS group; or SRS resources having the same number of SRS ports belong to one SRS group.

[0386] In one embodiment, an SRS resource within an SRS resource set has at least one of the features described below.

[0387] SRS resources with the same number of ports are associated with different spatial relationships; SRS resources with the same number of ports are associated with different panels; SRS resources with the same number of ports are associated with different beams; beams associated with SRS resources with the same number of ports do not have QCL relationships; or resources belonging to the same SRS group have different numbers of ports.

[0388] In one embodiment, for the first communication node, the SRS resource in the SRS resource set has at least one of the features described below.

[0389] The number of SRS groups does not exceed a predefined value X1; the number of spatial relationships associated with SRS resources within an SRS resource set does not exceed a predefined value X2; the number of panels associated with SRS resources within an SRS resource set does not exceed a predefined value X3; the number of different ports among the number of ports associated with SRS resources within an SRS resource set does not exceed a predefined value X4; the number of SRS resources within an SRS resource set does not exceed a predefined value X5; the number of open-loop power control parameters configured for an SRS resource set does not exceed a predefined value X6; the number of closed-loop power control parameters configured for an SRS resource set does not exceed a predefined value X7; the number of path loss measurement parameters configured for an SRS resource set does not exceed a predefined value X8; the number of open-loop power control parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X9; The number of closed-loop power control parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X10; or the number of path loss measurement parameters configured for all SRS resources within an SRS resource set does not exceed a predefined value X11.

[0390] In one embodiment, the values ​​of X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, and X11 depend on the capability of the first communication node or are predefined values.

[0391] In one embodiment, all SRS resources within an SRS resource set are divided into X SRS groups, where X is a positive integer, and the SRS resources included in one of the X SRS groups are determined by the SRS resource serial number.

[0392] In one embodiment, an SRS resource whose SRS resource serial number is even and an SRS resource whose SRS resource serial number is odd each belong to a different SRS group; or, a required number of SRS resources are sequentially allocated to each of X SRS groups according to the order of SRS resource serial numbers; or, SRS resources are sequentially allocated to each of X SRS groups according to the order of SRS resource serial numbers until the allocation is completed.

[0393] In one embodiment, SRS information includes first SRS information and second SRS information, the first SRS information is used to indicate an SRS group, and the second SRS information is used to indicate an SRS resource serial number within the SRS group.

[0394] In one embodiment, the second SRS information includes at least one of the features described below.

[0395] The second SRS information is displayed jointly with the precoding information and the number of layers; the fields of the precoding information and the number of layers include the second SRS information; or different second SRS information corresponds to different precoding information and different numbers of layers.

[0396] In one embodiment, the second SRS information includes the number of SRS ports.

[0397] In one embodiment, for the first communication node, the transmission includes at least one of the features described below.

[0398] The number of open-loop power control parameters of transmission does not exceed a predefined value X12; the number of closed-loop power control parameters of transmission does not exceed a predefined value X13; and the number of path loss measurement parameters of transmission does not exceed a predefined value X14.

[0399] In one embodiment, the values ​​of X12, X13, and X14 depend on the capability of the first communication node or are predefined values.

[0400] FIG. 7 is a structural diagram of another transmitting device according to one embodiment. The transmitting device may be configured in a receiving terminal. As shown in FIG. 7, the transmitting device includes a receiving module (20).

[0401] A receiving module (20) is configured to receive a transmission transmitted by a first communication node according to at least one of a codebook or a transmission power ratio, and at least one of the codebook or the transmission power ratio is determined by the first communication node according to the transmission mode of the first communication node.

[0402] The transmitting device provided by the present embodiment is configured to implement the transmitting method of the embodiment illustrated in FIG. 3. The implementation principles and effects of the transmitting device provided by the present embodiment are similar and are not repeated herein.

[0403] In one embodiment, in conjunction with FIG. 7, FIG. 8 is a structural diagram of another transmitting device according to one embodiment. The device further includes a transmitting module (21).

[0404] The transmission module (21) is configured to transmit the transmission mode to the first communication node.

[0405] In one embodiment, the transmission mode includes at least one of a first mode and a second mode.

[0406] In one embodiment, the transmission module (21) is further configured to transmit the scheduling information of the transmission to the first communication node.

[0407] In one embodiment, scheduling information for transmission is returned in at least one of the following information: radio resource control (RRC) signaling, a media access control element (MAC CE), or physical layer signaling. The physical layer signaling includes at least one of a physical downlink control channel (PDCCH) or downlink control information (DCI).

[0408] In one embodiment, the number of bits (M) for the fields of precoding information and the number of layers in physical layer signaling is determined by at least one of the items described below.

[0409] A maximum number of ports of an SRS resource within an SRS resource set corresponding to either a first communication node or a transmission; a number of ports of an SRS resource corresponding to a transmission; a maximum number of layers or a maximum rank; a number of bits configured by a second communication node and for fields of precoding information and the number of layers; or a predefined number of bits for fields of precoding information and the number of layers.

[0410] In one embodiment, the precoding information and the number of layers indicated by the values ​​of the fields of precoding information and the number of layers in physical layer signaling are analyzed by at least one of the information described below.

[0411] The number of ports of the SRS resource corresponding to transmission; the maximum number of layers or the maximum rank of the first communication node; or the actual maximum number of layers or the actual maximum rank.

[0412] In one embodiment, in response to the number of ports of an SRS resource corresponding to transmission being less than the maximum number of ports of an SRS resource within an SRS resource set, the number of required indication bits for the number of precoding information and layers corresponding to transmission is N, where N is less than or equal to M.

[0413] In one embodiment, in physical layer signaling, the M bits for the field of precoding information and the number of layers include N required indication bits for precoding information and the number of layers, and the remaining (M - N) bits are repetitions or preset values ​​of the N required indication bits for precoding information and the number of layers.

[0414] In one embodiment, physical layer signaling includes SRS information, and the SRS information is used to indicate an SRS resource within the SRS resource set of the first communication node.

[0415] In one embodiment, the SRS resource is associated with at least one of a spatial relationship, a panel, or a beam.

[0416] In one embodiment, an SRS resource within an SRS resource set is determined according to one of the features described below.

[0417] SRS resources associated with the same spatial relationship belong to one SRS group; SRS resources associated with the same panel belong to one SRS group; SRS resources associated with the same beam belong to one SRS group; SRS resources whose associated beam has a QCL relationship belong to one SRS group; or SRS resources having the same number of SRS ports belong to one SRS group.

[0418] In one embodiment, an SRS resource within an SRS resource set has at least one of the features described below.

[0419] SRS resources with the same number of ports are associated with different spatial relationships; SRS resources with the same number of ports are associated with different panels; SRS resources with the same number of ports are associated with different beams; beams associated with SRS resources with the same number of ports do not have QCL relationships; or resources belonging to the same SRS group have different numbers of ports.

[0420] In one embodiment, all SRS resources within an SRS resource set are divided into X SRS groups, where X is a positive integer, and the SRS resources included in one of the X SRS groups are determined by the SRS resource serial number.

[0421] In one embodiment, an SRS resource whose SRS resource serial number is even and an SRS resource whose SRS resource serial number is odd each belong to a different SRS group; or, a required number of SRS resources are sequentially allocated to each of X SRS groups according to the order of SRS resource serial numbers; or, SRS resources are sequentially allocated to each of X SRS groups according to the order of SRS resource serial numbers until allocation is complete.

[0422] In one embodiment, SRS information includes first SRS information and second SRS information, the first SRS information is used to indicate an SRS group, and the second SRS information is used to indicate an SRS resource serial number within the SRS group.

[0423] In one embodiment, the second SRS information includes at least one of the features described below.

[0424] The second SRS information is displayed jointly with the precoding information and the number of layers; the fields of the precoding information and the number of layers include the second SRS information; or different second SRS information corresponds to different precoding information and different numbers of layers.

[0425] In one embodiment, the second SRS information includes the number of SRS ports.

[0426] One embodiment of the present application further provides a transmitting device. The transmitting device includes a processor configured to implement a method provided by any one of the above embodiments of the present application when executing a computer program. The transmitting device may be a first communication node provided by any embodiment of the present application or a second communication node provided by any embodiment of the present application, but is not limited thereto.

[0427] The embodiments described below each provide schematic diagrams of a structure in which the transmitting device is a base station and a UE.

[0428] FIG. 9 is a structural diagram of a base station according to one embodiment. As illustrated in FIG. 9, the base station includes a processor (40), memory (41), and a communication interface (42). The number of processors (40) of the base station may be one or more, and in FIG. 9, one processor (40) is used as an example. The processor (40), memory (41), and communication interface (42) of the base station may be connected via a bus or in other ways. In FIG. 9, a connection via a bus is used as an example. The bus represents one or more of various types of bus structures, including a memory bus or memory controller, a peripheral device bus, an accelerated graphics port, a processor, or a local bus of any bus structure used by a plurality of bus structures.

[0429] As a computer-readable storage medium, memory (41) may be configured to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the transmission method of an embodiment of the present application. A processor (40) executes the software programs, instructions, and modules stored in memory (41) to execute at least one functional application and data processing of a base station, that is, to implement the transmission method described above.

[0430] The memory (41) may include a program storage area and a data storage area. The program storage area may store operating system and application programs required by at least one function; and the data storage area may store data generated according to the use of the terminal. Additionally, the memory (41) may include high-speed random access memory and may further include non-volatile memory such as at least one disk memory component, a flash memory component, or other non-volatile solid-state memory component. In some examples, the memory (41) may include memory located remotely in association with the processor (40), and this remote memory may be connected to a base station via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranet, local area network, mobile communication network, and combinations thereof.

[0431] The communication interface (42) may be configured to receive and transmit data.

[0432] FIG. 10 is a structural diagram of a UE according to one embodiment. The UE may be implemented in various forms. The UE in this application includes, but is not limited to, mobile terminal devices such as mobile phones, smartphones, notebook computers, digital broadcast receivers, personal digital assistants (PDAs), portable devices (PADs), portable multimedia players (PMPs), navigation devices, vehicle-mounted terminal devices, vehicle-mounted display terminals, and vehicle-mounted electronic rearview mirrors, or fixed terminal devices such as digital televisions (TVs) and desktop computers.

[0433] As illustrated in FIG. 10, the UE (50) may include a wireless communication unit (51), an audio / video (A / V) input unit (52), a user input unit (53), a sensing unit (54), an output unit (55), a memory (56), an interface unit (57), a processor (58), a power supply unit (59), and so on. FIG. 10 illustrates a UE including various assemblies, and it is not necessary to implement all the assemblies illustrated. Instead, more or fewer assemblies may be implemented.

[0434] In this embodiment, the wireless communication unit (51) enables wireless communication between the UE (50) and a base station or network. The A / V input unit (52) is configured to receive audio or video signals. The user input unit (53) may generate key input data according to commands entered by the user to control various operations of the UE (50). The sensing unit (54) detects the current state of the UE (50), the location of the UE (50), the presence or absence of touch input by the user on the UE (50), the orientation of the UE (50), the acceleration or deceleration movement and direction of the UE (50), and generates commands or signals to control the operations of the UE (50). The interface unit (57) functions as an interface that allows at least one external device to be connected to the UE (50). The output unit (55) is configured to provide output signals in a visual, auditory, and / or tactile manner. The memory (56) may store software programs for processing and controlling operations executed by the processor (58), etc., or may temporarily store data that has been output or is to be output. The memory (56) may include at least one type of storage medium. Additionally, the UE (50) may cooperate with a network storage device that performs the storage function of the memory (56) via a network connection. The processor (58) is generally configured to control the overall operation of the UE (50). The power supply unit (59) receives external or internal power under the control of the processor (58) and provides the appropriate power required to operate various components and assemblies.

[0435] The processor (58) executes a program stored in memory (56) to execute at least one functional application and data processing, for example, to implement a transmission method provided by an embodiment of the present application.

[0436] An embodiment of the present application further provides a computer-readable storage medium configured to store a computer program that implements a method provided by any one of the embodiments of the present application when executed by a processor.

[0437] The computer storage medium of the embodiments of the present application may adopt any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof, but is not limited thereto. The computer-readable storage medium includes the following (non-exclusive list): an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disk read-only memory (CD-ROM), optical memory component, magnetic memory component, or any suitable combination thereof. In the present application, the computer-readable storage medium may be any type of medium that contains or stores a program. A program may be used by an instruction execution system, device, or component, or may be used in conjunction with an instruction execution system, device, or component.

[0438] A computer-readable signal medium may include a data signal that is propagated in the baseband or as part of a carrier, and the data signal includes computer-readable program code. Such propagated data signal may take various forms including, but not limited to, electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may further include any computer-readable medium other than a computer-readable storage medium. A computer-readable medium may transmit, propagate, or send a program that is used by, or used in conjunction with, an instruction execution system, device, or component.

[0439] Program code contained in a computer-readable medium may be transmitted over any suitable medium including, but not limited to, wireless, wired, optical cable, radio frequency (RF), etc., or any suitable combination thereof.

[0440] Computer program code for executing the operation of the present application may be written in one or more programming languages ​​or a combination of multiple programming languages. Programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, C++, Ruby, and Go, as well as conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed wholly on a user computer, partially on a user computer, as a separate software package, partially on a user computer and partially on a remote computer, or entirely on a remote computer or server. Where a remote computer is involved, the remote computer may be connected to the user computer through any type of network including a local area network (LAN) or a wide area network (WAN), or it may be connected to an external computer (e.g., via the Internet through an Internet service provider).

[0441] The term user terminal encompasses any suitable type of wireless user device, such as a mobile phone, a portable data processing device, a portable web browser, or a vehicle-mounted mobile station.

[0442] In general, various embodiments of the present application may be implemented in hardware or special-purpose circuits, software, logic, or any combination thereof. For example, some embodiments may be implemented in hardware, while others may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, but the present application is not limited thereto.

[0443] Embodiments of the present application may be implemented, for example, by a data processor of a mobile device executing computer program instructions in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-associated instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.

[0444] Any block diagram of a logic flow in the drawings of this application may represent a program step, or may represent an interconnected logic circuit, module, and function, or may represent a combination of a program step and a logic circuit, module, and function. A computer program may be stored in memory. Memory may have any type suitable for the local technology environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-only memory (ROM), random access memory (RAM), optical memory devices and systems (digital video disc (DVD) or CD), and so on. A computer-readable medium may include a non-transient storage medium. A data processor may have any type suitable for the local technology environment, such as, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processing (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

Claims

Claim 1 A transmission method comprises: a step of determining a transmission mode of a first communication node; a step of determining a transmission power ratio according to the transmission mode; and a step of transmitting a transmission according to the transmission power ratio, wherein the transmission mode includes one of a first mode and a second mode, and the step of determining a transmission power ratio according to the transmission mode comprises a step of determining the transmission power ratio according to the power capability of a TPMI (transmitted precoding matrix indicator) of the transmission in response to the transmission mode being the second mode. The method further comprises the step of determining the transmission power ratio according to the number of ports of a sounding reference signal (SRS) resource corresponding to the transmission in response to the transmission mode being the first mode, and the method further comprises the step of receiving scheduling information for the transmission from a second communication node, wherein the scheduling information for the transmission is carried in a physical layer signaling, and the physical layer signaling includes downlink control information (DCI), and the number of bits (M) for the fields of precoding information and the number of layers in the physical layer signaling is determined by the maximum number of ports of an SRS resource in an SRS resource set corresponding to the transmission, and the physical layer signaling includes SRS information, and the SRS information is used to indicate an SRS resource in an SRS resource set of the first communication node, and for the first communication node, the SRS resource in the SRS resource set has the following features: the number of spatial relationships associated with the SRS resource in the SRS resource set does not exceed a predefined value X2; and having that the number of SRS resources within the above SRS resource set does not exceed a predefined value X5;A transmission method in which X2 and X5 are both positive integers, the value of X2 depends on the capability of the first communication node, and the value of X5 is a predefined value. Claim 2 A transmission method according to claim 1, wherein the step of determining the transmission mode of the first communication node includes the step of receiving the transmission mode from the second communication node. Claim 3 A transmission method according to claim 1, wherein the power capability includes whether the maximum transmission power of the first communication node is reached. Claim 4 delete Claim 5 A transmission method according to claim 1, wherein the precoding information and the number of layers indicated by the values ​​of the fields of the precoding information and the number of layers in the physical layer signaling are analyzed based on the following information: the number of ports of the SRS resource corresponding to the transmission; and the maximum number of layers of the first communication node. Claim 6 delete Claim 7 A transmission device comprising a processor; wherein the processor, when executing a computer program, determines a transmission mode of a first communication node; determines a transmission power ratio according to the transmission mode; and is configured to transmit a transmission according to the transmission power ratio, wherein the transmission mode includes one of a first mode and a second mode, and determining the transmission power ratio according to the transmission mode is to determine the transmission power ratio according to the power capability of the TPMI of the transmission in response to the transmission mode being the second mode; and in response to the transmission mode being the first mode, the transmission power ratio is determined according to the number of ports of the SRS resource corresponding to the transmission, and the processor is also configured to receive scheduling information for the transmission from a second communication node, the scheduling information for the transmission is returned in physical layer signaling, the physical layer signaling includes downlink control information (DCI), the processor is also configured to determine the number of bits (M) for the fields of precoding information and the number of layers in the physical layer signaling by the maximum number of ports of the SRS resource in the SRS resource set corresponding to the transmission, the physical layer signaling includes SRS information, the SRS information is used to indicate an SRS resource in the SRS resource set of the first communication node, and for the first communication node, the SRS resource in the SRS resource set has the following features: the number of spatial relationships associated with the SRS resource in the SRS resource set does not exceed a predefined value X2; A transmission device having that the number of SRS resources in the above SRS resource set does not exceed a predefined value X5; where X2 and X5 are both positive integers, and the value of X2 depends on the capability of the first communication node, and the value of X5 is a predefined value. Claim 8 In claim 7, the processor is also configured to receive the transmission mode from the second communication node when determining the transmission mode of the first communication node, a transmission device. Claim 9 A transmission device according to claim 7, wherein the power capability includes whether the maximum transmission power of the first communication node is reached. Claim 10 delete Claim 11 A transmission device according to claim 7, wherein the precoding information and the number of layers indicated by the value of the field of the precoding information and the number of layers in the physical layer signaling are analyzed based on the following information: the number of ports of the SRS resource corresponding to the transmission; and the maximum number of layers of the first communication node. Claim 12 delete Claim 13 A transmission method comprising the step of receiving a transmission transmitted by a first communication node according to a transmission power ratio, wherein the transmission power ratio is determined by the first communication node according to a transmission mode of the first communication node; wherein the transmission mode includes a first mode or a second mode, and determining the transmission power ratio according to the transmission mode is, in response to the transmission mode being the second mode, determining the transmission power ratio according to the power capability of the TPMI of the transmission; The method comprises determining the transmission power ratio according to the number of ports of the SRS resource corresponding to the transmission in response to the transmission mode being the first mode, and further comprises the step of transmitting the transmission scheduling information to the first communication node, wherein the transmission scheduling information is returned in physical layer signaling, and the physical layer signaling includes downlink control information (DCI), and the number of bits (M) for the fields of precoding information and the number of layers in the physical layer signaling is determined by the maximum number of ports of the SRS resource in the SRS resource set corresponding to the transmission, and the physical layer signaling includes SRS information, and the SRS information is used to indicate the SRS resource in the SRS resource set of the first communication node, and for the first communication node, the SRS resource in the SRS resource set has the following features: the number of spatial relationships associated with the SRS resource in the SRS resource set does not exceed a predefined value X2; A transmission method having that the number of SRS resources within the above SRS resource set does not exceed a predefined value X5; where X2 and X5 are both positive integers, and the value of X2 depends on the capability of the first communication node, and the value of X5 is a predefined value. Claim 14 A transmission method according to claim 13, further comprising the step of transmitting the transmission mode to the first communication node. Claim 15 A transmission method according to claim 13, wherein the power capability includes whether the maximum transmission power of the first communication node is reached. Claim 16 delete Claim 17 A transmission method according to claim 13, wherein the precoding information and the number of layers indicated by the values ​​of the fields of the precoding information and the number of layers in the physical layer signaling are analyzed based on the following information: the number of ports of the SRS resource corresponding to the transmission; and the maximum number of layers of the first communication node. Claim 18 delete Claim 19 A transmission device comprising a processor; wherein the processor is configured to receive a transmission transmitted by a first communication node according to a transmission power ratio when executing a computer program; wherein the transmission power ratio is determined by the first communication node according to a transmission mode of the first communication node; wherein the transmission mode includes a first mode or a second mode, and determining the transmission power ratio according to the transmission mode is to determine the transmission power ratio according to the power capability of the TPMI of the transmission in response to the transmission mode being the second mode; and in response to the transmission mode being the first mode, the transmission power ratio is determined according to the number of ports of the SRS resource corresponding to the transmission, and the processor is also configured to transmit scheduling information of the transmission to the first communication node, the scheduling information of the transmission is returned in physical layer signaling, the physical layer signaling includes downlink control information (DCI), the processor is also configured to determine the number of bits (M) for the fields of precoding information and the number of layers in the physical layer signaling by the maximum number of ports of the SRS resource in the SRS resource set corresponding to the transmission, the physical layer signaling includes SRS information, the SRS information is used to indicate an SRS resource in the SRS resource set of the first communication node, and for the first communication node, the SRS resource in the SRS resource set has the following features: the number of spatial relationships associated with the SRS resource in the SRS resource set does not exceed a predefined value X2; A transmission device having that the number of SRS resources in the above SRS resource set does not exceed a predefined value X5; where X2 and X5 are both positive integers, and the value of X2 depends on the capability of the first communication node, and the value of X5 is a predefined value. Claim 20 In paragraph 19, the processor is also configured to transmit the transmission mode to the first communication node, a transmission device. Claim 21 delete Claim 22 delete Claim 23 delete Claim 24 delete Claim 25 delete Claim 26 delete Claim 27 delete Claim 28 delete Claim 29 delete Claim 30 delete Claim 31 delete Claim 32 delete Claim 33 delete Claim 34 delete Claim 35 delete Claim 36 delete Claim 37 delete Claim 38 delete Claim 39 delete Claim 40 delete Claim 41 delete Claim 42 delete Claim 43 delete Claim 44 delete Claim 45 delete Claim 46 delete Claim 47 delete Claim 48 delete Claim 49 delete Claim 50 delete Claim 51 delete Claim 52 delete Claim 53 delete Claim 54 delete Claim 55 delete

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