Phase information indication method and apparatus, terminal, and network side device

Abstract

A phase information indication method and apparatus, a terminal, and a network side device, relating to the technical field of communications. The phase information indication method in embodiments of the present application comprises: a terminal acquires first signaling, wherein the first signaling is used for indicating at least one of the following: phase information of n second ports mapped to m first ports, the second ports being uplink transmission ports, the first ports being ports configured by a network side device for the terminal, m being an integer greater than 1, and n being an integer less than or equal to m; a TCI state, the TCI state being used for indicating the phase information; and a downlink reference signal, the downlink reference signal being used for determining the phase information.

Description

Phase information indication methods, devices, terminals and network-side equipment

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411212975.0, filed in China on August 30, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application belongs to the field of communication technology, and specifically relates to a phase information indication method, device, terminal and network-side equipment. Background Technology

[0004] In some related technologies, the terminal acquires phase information based on a beam management process. This involves executing a beam management procedure, specifically: the terminal first sends a Sounding Reference Signal (SRS) for a narrow beam used for beam management. The network-side device measures the SRS of the narrow beam to determine the optimal beam for uplink transmission. The network-side device then sends an indication message to the terminal, specifying the optimal uplink beam and its corresponding SRS, indicating that the phase information of the uplink antenna port matches the indicated SRS. Therefore, the terminal needs to perform some processing to acquire phase information, resulting in a relatively large latency in phase information acquisition. Summary of the Invention

[0005] This application provides a phase information indication method, apparatus, terminal, and network-side device, which can solve the problem of large latency in obtaining phase information by the terminal.

[0006] Firstly, a phase information indication method is provided, including:

[0007] The terminal acquires a first signaling message, the first signaling message being used to indicate at least one of the following:

[0008] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side device for the terminal. m is an integer greater than 1, and n is an integer less than or equal to m.

[0009] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0010] Downlink reference signal, which is used to determine phase information.

[0011] Secondly, a phase information indication method is provided, including:

[0012] The network-side device sends a first signaling message, the first signaling message being used to indicate at least one of the following:

[0013] The phase information of n second ports mapped to m first ports, where the second ports are uplink transmission ports, and the first ports are ports configured by the network-side device for the terminal, where m is an integer greater than 1, and n is an integer less than or equal to m;

[0014] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0015] Downlink reference signal, which is used to determine phase information.

[0016] Thirdly, a phase information indicating device is provided, comprising:

[0017] The receiving module is configured to acquire a first signaling, the first signaling being configured to indicate at least one of the following:

[0018] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m.

[0019] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0020] Downlink reference signal, which is used to determine phase information.

[0021] Fourthly, a phase information indicating device is provided, comprising:

[0022] The sending module is configured to send a first signaling, the first signaling being configured to indicate at least one of the following:

[0023] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m.

[0024] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0025] Downlink reference signal, which is used to determine phase information.

[0026] Fifthly, a phase information indicating device is provided, the device being configured to perform the steps of the phase information indicating method on the terminal side as provided in the embodiments of this application.

[0027] In a sixth aspect, a phase information indicating device is provided, the device being configured to perform the steps of the phase information indicating method for a network-side device as provided in the embodiments of this application.

[0028] In a seventh aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the terminal-side phase information indication method provided in the embodiments of this application.

[0029] Eighthly, a terminal is provided, including a processor and a communication interface, wherein the communication interface is used to acquire first signaling, the first signaling being used to indicate at least one of the following: phase information of n second ports mapped to m first ports, the second ports being uplink transmission ports, the first ports being ports configured by network-side devices for the terminal, m being an integer greater than 1, and n being an integer less than or equal to m; a transmission configuration indication (TCI) state, the TCI state being used to indicate phase information; and a downlink reference signal, the downlink reference signal being used to determine the phase information.

[0030] In a ninth aspect, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the phase information indication method of the network-side device as provided in the embodiments of this application.

[0031] In a tenth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first signaling, the first signaling being used to indicate at least one of the following: phase information of n second ports mapped to m first ports, the second ports being uplink transmission ports, the first ports being ports configured by the network-side device for terminals, m being an integer greater than 1, and n being an integer less than or equal to m; a transmission configuration indication (TCI) state, the TCI state being used to indicate the phase information; and a downlink reference signal, the downlink reference signal being used to determine the phase information.

[0032] In the eleventh aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the phase information indication method on the terminal side as provided in the embodiments of this application, or implement the steps of the phase information indication method on the network side device as provided in the embodiments of this application.

[0033] In a twelfth aspect, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal is configured to perform the steps of the terminal-side phase information indication method as provided in the embodiments of this application, and the network-side device is configured to perform the steps of the network-side device phase information indication method as provided in the embodiments of this application.

[0034] In a thirteenth aspect, a chip is provided, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the phase information indication method on the terminal side as provided in the embodiments of this application, or to implement the phase information indication method on the network side as provided in the embodiments of this application.

[0035] In a fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium and is executed by at least one processor to implement the steps of the phase information indication method on the terminal side as provided in the embodiments of this application, or the computer program / program product is executed by at least one processor to implement the steps of the phase information indication method on the network side device as provided in the embodiments of this application.

[0036] In this embodiment, the terminal obtains a first signaling, which indicates at least one of the following: phase information of n second ports mapped to m first ports, where the second ports are uplink transmission ports, the first ports are ports configured for the terminal by the network-side device, m is an integer greater than 1, and n is an integer less than or equal to m; TCI status, which indicates the phase information; and a downlink reference signal, which determines the phase information. Thus, since the first signaling indicates at least one of the phase information of n second ports mapped to m first ports, the TCI status, and the downlink reference signal, the terminal can obtain the phase information directly from the first signaling, avoiding cumbersome processing operations and reducing the latency of the terminal obtaining the phase information. Attached Figure Description

[0037] Figure 1 is a schematic diagram of a system provided in an embodiment of this application;

[0038] Figure 2 is a flowchart of a phase information indication method provided in an embodiment of this application;

[0039] Figure 3 is a schematic diagram of a port mapping provided in an embodiment of this application;

[0040] Figure 4 is a schematic diagram of another port mapping provided in an embodiment of this application;

[0041] Figure 5 is a flowchart of another phase information indication method provided in an embodiment of this application;

[0042] Figure 6 is a structural diagram of a phase information indicating device provided in an embodiment of this application;

[0043] Figure 7 is a structural diagram of another phase information indicating device provided in an embodiment of this application;

[0044] Figure 8 is a structural diagram of a communication device provided in an embodiment of this application;

[0045] Figure 9 is a structural diagram of a terminal provided in an embodiment of this application;

[0046] Figure 10 is a structural diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0048] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0049] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as one in which the sender explicitly informs the receiver of specific information, the operation to be performed, or the requested result, etc., in the instruction sent. An indirect instruction can be understood as one in which the receiver determines the corresponding information based on the instruction sent by the sender, or makes a judgment and determines the operation to be performed or the requested result, etc., based on the judgment result.

[0050] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0051] Figure 1 shows a block diagram of a wireless communication system applicable to an embodiment of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home (home devices with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game console, personal computer (PC), ATM, or self-service machine, etc. Wearable devices include: smartwatches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 can include access network equipment or core network equipment, wherein access network equipment can also be referred to as Radio Access Network (RAN) equipment, radio access network function, radio access network unit, or satellite. Access network equipment can include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.The term "base station" can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), or any other suitable term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments in this application only use base stations in NR systems as examples for description and do not limit the specific type of base station.

[0052] Core network equipment, also known as core network nodes, core network functions, or core network elements, includes, but is not limited to, at least one of the following: Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), and Binding Support. The core network functions include: BSF (Block Network Function), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), and Network Data Analytics Function (NWDAF). It should be noted that this application embodiment only uses core network equipment in the NR system as an example and does not limit the specific type of core network equipment. If the name of the core network equipment mentioned in this application embodiment changes in subsequent protocol versions (e.g., 6G), it will still be within the scope of protection of this application.

[0053] Optionally, the core network equipment can be implemented by one or more functional modules in a single device, or by multiple devices working together; this application does not specifically limit this. It is understood that the aforementioned functional modules can be network elements in hardware devices, software functional modules running on dedicated hardware, or virtualized functional modules instantiated on a platform (e.g., a cloud platform).

[0054] The following description, in conjunction with the accompanying drawings, details a phase information indication method, apparatus, terminal, and network-side device provided in this application through some embodiments and application scenarios.

[0055] Please refer to Figure 2, which is a flowchart of a phase information indication method provided in an embodiment of this application. As shown in Figure 2, it includes the following steps:

[0056] Step 201: The terminal obtains a first signaling message, which is used to indicate at least one of the following:

[0057] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side device for the terminal. m is an integer greater than 1, and n is an integer less than or equal to m.

[0058] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0059] Downlink reference signal, which is used to determine phase information.

[0060] The aforementioned acquisition of the first signaling can be the terminal receiving the first signaling sent by the network-side device.

[0061] The aforementioned first signaling instruction indicates that at least one of the above items may be an explicit or implicit instruction of at least one of the above items.

[0062] The aforementioned first signaling may be Radio Resource Control (RRC) signaling, or Medium Access Control Control Element (MAC CE), such as a MAC CE activating TCI status, at least one of the above. Alternatively, the aforementioned first signaling may be Downlink Control Information (DCI), such as DCI format 0_0,0_1,0_2,0_3 or DCI format 2_x, for example, x = 10, 11, 12, or so on, representing group common DCI.

[0063] The aforementioned second port can be a port used for uplink transmission, such as a Physical Uplink Shared Channel (PUSCH), SRS, or Physical Uplink Control Channel (PUCCH).

[0064] The aforementioned second port can specifically be a digital port (also known as a digital antenna port), a radio frequency channel, a transceiver unit (txRU), an SRS port, or an SRS port used for Physical Uplink Shared Channel (PUSCH) transmission, or an antenna port used for PUSCH transmission, or a PUSCH port, or a digital antenna port.

[0065] The first port mentioned above is a port configured by the network-side device for the terminal. It can be a port that is dynamically or pre-configured by the network-side device. The first port mentioned above can be an antenna port, an analog antenna port, an SRS port, or a selectable candidate (SRS) port.

[0066] In some implementations, the first port corresponds to SRS ports of different SRS resources, and the second port corresponds to SRS ports of the same SRS resource. For example, the first port is an antenna port corresponding to SRS ports of different SRS resources, while the second port is an antenna port corresponding to an SRS port of one SRS resource. Specifically, for example, if a terminal receives SRS configuration from the network side, and the configuration includes an SRS resource set, the SRS resource set includes multiple SRS resources, and each SRS resource includes one or more SRS ports, then the first port corresponds to all SRS ports of all SRS resources in the SRS resource set or the antenna port corresponding to an SRS port, while the second port corresponds to an SRS port of one SRS resource or the antenna port corresponding to an SRS port. Alternatively, the first port corresponds to SRS ports of different SRS resource sets, and the second port corresponds to SRS ports of the same SRS resource set.

[0067] The mapping of the above n second ports to m first ports can be understood as the connection of n second ports to m first ports, as shown in Figure 3 or Figure 4. As shown in Figure 3, different second ports are mapped to different first ports. The mapping method shown in Figure 3 can be applied to scenarios where antenna layout space and phase shifter cost are limited. Taking the first port as an antenna as an example, one second port is connected to part of the antenna array. As shown in Figure 4, each second port is mapped to all first ports. Taking the first port as an antenna as an example, one second port is connected to all antennas.

[0068] In some implementations, where the number of second ports is less than the number of first ports, one second port for uplink transmission can connect to multiple first ports for coherent uplink transmission, thereby further improving uplink transmission performance. Specifically, taking two second ports and four first ports as an example, as shown in Figure 3, each second port can be connected to two first ports respectively during uplink transmission. The phase shifters of the two first ports can adjust the phase to achieve coherent superposition of the signals transmitted by the first ports, thereby improving uplink transmission performance.

[0069] The aforementioned TCI state used to indicate phase information can be either explicit or implicit. For example, the first signaling indicates at least one TCI state for uplink transmission, which includes phase information indication. The terminal transmits uplink data or reference signals based on the phase information indication of the TCI state.

[0070] The aforementioned Downlink Reference Signal (DL-RS) used to determine phase information can be either the phase information corresponding to the DL-RS used as the phase information for uplink transmission, or the DL-RS indicating phase information. For example, the aforementioned first signaling indicates at least one DL-RS, and the terminal calculates the aforementioned phase information based on at least one DL-RS, such as calculating the phase matrix of the first port. For example, the terminal receives configuration information sent by a network-side device, the configuration information including an SRS resource set for codebook transmission, which is associated with a DL-RS, such as a Channel State Information (CSI-RS). The terminal determines the phase information of the SRS based on the CSI-RS, that is, the phase information of the SRS associated with the DL-RS is used as the phase information for uplink transmission.

[0071] The phase information of the above n second ports mapped to m first ports, the phase information of the above TCI status indication, and the phase information determined by the above downlink reference signal can be the phase information of uplink transmission, such as the phase information of uplink coherent transmission.

[0072] The phase information of the above n second ports mapped to m first ports, the phase information of the above TCI status indication, and the phase information determined by the above downlink reference signal can be the phase information of the phase shifter of the first port (antenna port), used to assist the terminal in coherent transmission, so as to improve the performance of the terminal's uplink transmission.

[0073] In some implementations, mapping n second ports to m first ports can be represented as obtaining the transmission signals or data symbols corresponding to the m first ports through precoding of the transmission signals or data symbols corresponding to the n second ports. For example, a precoding matrix can be multiplied by the transmission signals or data symbols corresponding to the n second ports to obtain the transmission signals or data symbols corresponding to the m first ports.

[0074] In some implementations, mapping n second ports to m first ports can be expressed as obtaining the transmission signals or data symbols corresponding to the m first ports based on the transmission signals or data symbols corresponding to the n second ports.

[0075] In some implementations, the phase information of the n second ports mapped to the m first ports, the phase information of the TCI state indication, and the phase information determined by the downlink reference signal can be the same phase information. In this case, the first signaling only needs to indicate any one of the above.

[0076] In some implementations, the phase information of the n second ports mapped to the m first ports, the phase information of the TCI state indication, and the phase information determined by the downlink reference signal can be different phase information. That is, in this case, the first signaling can indicate one or more of the above.

[0077] In this embodiment of the application, since the first signaling indicates at least one of the phase information, TCI state and downlink reference signal of n second ports mapped to m first ports, the terminal can obtain the phase information through the first signaling, avoiding cumbersome processing operations and reducing the latency of the terminal to obtain the phase information.

[0078] In addition, the aforementioned phase information is used for uplink transmission and does not require beam management procedures, thereby reducing beam update latency and improving the uplink transmission performance of the terminal.

[0079] In some embodiments, the network-side device indicates the phase information of the first port for uplink transmission. The network-side device obtains the uplink transmission channel information through SRS measurement and selects the first port based on the channel information. Before indicating the first port, the network-side device needs to obtain the channel information of all candidate first ports. The following describes in detail the implementation of all first ports (candidate ports) based on the SRS port and the second port used for PUSCH transmission.

[0080] The first port and the number of first ports are as follows:

[0081] The first port can represent an antenna port, an analog antenna port, an SRS port corresponding to different SRS resources, all available candidate (SRS) ports, or port information: {SRS index, SRS port index}, or port information: {SRS resource set index, SRS port index}, etc.

[0082] Example 1: The terminal receives an SRS resource set configured on the network side. The resource set contains two SRS resources, and each SRS resource corresponds to two SRS ports. Therefore, the first port corresponds to a total of 4 SRS ports of the two SRS resources.

[0083] The index of the first port can be represented by {SRS index, SRS port index}. Optionally, the first ports are arranged in ascending order of the SRS resource index. Alternatively, it can be calculated from the SRS index and the SRS port index: the index of the first port = SRI * (the number of SRS ports indicated by SRI) + SRS port index.

[0084] The first port and the number of first ports, m, can be obtained through network-side device configuration. For example, when a terminal receives network-side configuration information, this configuration information includes SRS configuration information, as follows:

[0085] Example 1: The above SRS configuration information includes an SRS resource set, which contains X SRS resources, each SRS resource corresponds to L SRS ports, X = 2, 3, 4, 5, 6, 7, 8, L = 1, 2, 3, 4, m = X * L.

[0086] Optionally, the possible configuration is X=2, L=1,2,3,4,6, m=2,4,6,8,12;

[0087] Alternatively, the possible configurations are X=3, L=1,2,4, m=3,6,12;

[0088] Alternatively, the possible configurations are X=4, L=1,2,3, m=4,8,12;

[0089] Alternatively, the configuration may be X=6, L=1,2, m=6,12.

[0090] Example 2: The above SRS configuration information contains X SRS resource sets, each SRS resource set contains Y SRS resources, and each SRS resource corresponds to L SRS ports, X = 2, 3, 4, 5, 6, 7, 8, Y = 1, 2, 3, 4, L = 1, 2, 3, 4, m = X * Y * L, or m = X * L.

[0091] Alternatively, the configuration may be X=2, Y=L=1, m=2;

[0092] Optionally, the possible configurations are X=2, Y=2,3,4,8,L=1,m=4,6,8,12;

[0093] Alternatively, the possible configurations are X=3, Y=2,4,L=1,m=6,12.

[0094] The second port and the number of second ports are as follows:

[0095] The second port can represent an SRS port corresponding to an SRS resource, an SRS port used for PUSCH transmission, an antenna port used for PUSCH transmission, a PUSCH port, or a digital antenna port, etc. The second port and its quantity n can be obtained through network-side device configuration. The terminal receives network-side configuration information, which includes SRS configuration information, including:

[0096] Example 1: The SRS configuration information above indicates the number n of the second ports;

[0097] Example 2: The above SRS configuration information includes X SRS resources, and one SRS resource contains L SRS ports, then n = L; for example: the SRS configuration information includes X SRS resources, and the SRS resource containing the largest SRS port among the X SRS resources contains L SRS ports, then n = L; wherein the X SRS resources belong to the same SRS resource set;

[0098] Example 3: The above SRS configuration information includes X SRS resource sets, and the SRS resources in one SRS resource set contain L SRS ports, then n = L; For example: the above SRS configuration information includes X SRS resource sets, and the SRS resource set corresponding to the largest SRS port in the X SRS resource sets contains L SRS ports, then n = L; the X SRS resource sets satisfy at least one of the following conditions: Condition 1: the X SRS resource sets have the same time-domain behavior; Condition 2: the X SRS resource sets have the same purpose.

[0099] As an optional implementation, the phase information mapped from the n second ports to the m first ports includes one of the following:

[0100] q1 first vectors of dimension p;

[0101] A second vector of dimension m with q2 dimensions;

[0102] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0103] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0104] Among them, q1, q2, q3, q4 and p can be integers that are agreed upon by the protocol, configured by the network-side device, or determined by the terminal's capabilities.

[0105] In some implementations, the values ​​of q1, q2, q3, q4 and p are related to the values ​​of n or m. For example, p can be equal to m / n.

[0106] In the mapping method shown in Figure 3, the phase information of the above n second ports mapped to m first ports includes q1 first vectors with dimension p.

[0107] In the mapping method shown in Figure 4, the phase information of the above n second ports mapped to m first ports includes q2 second vectors with dimension m, or q3 third vectors with dimension p and q4 fourth vectors with dimension n.

[0108] In the above embodiments, phase information can be indicated in a vector manner by using at least one of the first vector, the second vector, the third vector, and the fourth vector, so as to enable the terminal to perform uplink coherent transmission and thereby improve the uplink transmission performance of the terminal.

[0109] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors relate to at least one of the following:

[0110] m, n, O;

[0111] Wherein, O represents the oversampling factor.

[0112] The aforementioned O can be agreed upon by the protocol, for example, O=1, or the aforementioned O can be reported by the terminal to the network-side device, or the aforementioned O can be indicated by the configuration information of the network-side device.

[0113] For example: the DFT vector mentioned above The first vector mentioned above is the vector v in the DFT. l Selecting a vector, as indicated by the first signaling above, involves selecting a first vector in the DFT vector v. l The index or sequence number in the database.

[0114] For example, the DFT vector mentioned above The second vector mentioned above is the vector v in the DFT. l Selecting a vector, as indicated by the first signaling above, involves selecting a second vector within the DFT vector v. lThe index or sequence number in the database.

[0115] For example, the DFT vector mentioned above The third vector mentioned above is the vector v in the DFT. l The selected vector, as indicated by the first signaling above, is the third vector in the DFT vector v. l The index or sequence number in the database.

[0116] For example, the DFT vector mentioned above The fourth vector mentioned above is the one in the DFT vector v l Selecting a vector, as indicated by the first signaling above, involves the fourth vector in the DFT vector v. l The index or sequence number in the database.

[0117] It should be noted that the DFT vectors provided above are merely illustrative examples. The specific content of the DFT vectors is not limited in the embodiments of this application, and the DFT vectors may be agreed upon by the protocol, configured on the network side, or pre-configured by the terminal.

[0118] Since at least one of the first vector, second vector, third vector, and fourth vector is a vector selected from the DFT vector, the first signaling does not need to indicate the specific content of the first vector, second vector, third vector, and fourth vector, thus saving the overhead of the first signaling.

[0119] In some implementations, at least one of the first vector, second vector, third vector, and fourth vector may not be a vector selected from the DFT vector. For example, the protocol may stipulate or the network side may pre-configure a set of vectors that can be used as phase information, and then the first signaling may be used to instruct the vectors in the set to be used as phase information.

[0120] As an optional implementation, the method further includes:

[0121] A two-dimensional matrix is ​​determined based on the phase information of the n second ports mapped to the m first ports;

[0122] Based on the two-dimensional matrix, the transmission mapping from the n second ports to the m first ports is determined, and the transmission mapping is used for uplink transmission.

[0123] The aforementioned terminal determines a two-dimensional matrix based on the phase information of the n second ports mapped to the m first ports.

[0124] The terminal can determine the two-dimensional matrix based on the phase information of the n second ports mapped to the m first ports, or it can determine the two-dimensional matrix based on the vectors included in the phase information.

[0125] For example, when the phase information mapped from the n second ports to the m first ports includes q1 first vectors of dimension p, the two-dimensional matrix satisfies one of the following:

[0126] When n=2, q1=1:

[0127] When n=3, q1=1:

[0128] When n=4, q1=1:

[0129] When n=2, q1=2:

[0130] When n=3, q1=3: Or q1 = 2:

[0131] When n=4, q1=4: Or q1 = 2,

[0132] Wherein, U represents the two-dimensional matrix, and A0, A1, A2, and A3 represent the q1 first vectors with dimension p.

[0133] This allows for the determination of a more suitable two-dimensional matrix based on the number of second ports, thereby improving the uplink transmission performance of the terminal.

[0134] For example, when the phase information mapped from the n second ports to the m first ports includes q2 second vectors of dimension m, the two-dimensional matrix satisfies one of the following:

[0135] When n=2, q2=1: U=[B0 B0]

[0136] When n=2, q²=2: U=[B0 B1]

[0137] When n=3, q2=1: U=[B0 B0 B0]

[0138] When n=3, q2=3: U=[B0 B1 B2], or q2=2: U=[B0 B1 B0]

[0139] When n=4, q2=1: U=[B0 B1 B2 B3], or q2=2: U=[B0 B1 B0 B2]

[0140] Wherein, U represents the two-dimensional matrix, and B0, B1, B2, and B3 represent the q2 second vectors with dimension m.

[0141] This allows for the determination of a more suitable two-dimensional matrix based on the number of second ports, thereby improving the uplink transmission performance of the terminal.

[0142] For example, when the phase information mapped from the n second ports to the m first ports includes q3 third vectors of dimension p and q4 fourth vectors of dimension n, the two-dimensional matrix is:

[0143] Where U represents the two-dimensional matrix, B0…B q-1 Let q represent the third vector with dimension p. This represents the fourth vector of the four dimensions, each with dimension n.

[0144] Thus, the two-dimensional matrix is ​​determined by the Kronecker product of the third and fourth vectors, so that...

[0145] When n=2, q3=1, q4=1 or 2;

[0146] When n=2, q3=2, p=2;

[0147] When n=3, q3=1, p=3 or q4=2;

[0148] When n=3, q3=3, p=2 or q4=3;

[0149] When n=4, q3=1, p=2 or q4=4;

[0150] When n=4, q3=2, p=2 or q4=4;

[0151] When n=4, q3=4, p=2 or q4=4.

[0152] The aforementioned terminal's determination of the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix can be understood as mapping the n second ports to the m first ports based on the two-dimensional matrix.

[0153] The above transmission mapping for uplink transmission can be understood as a mapping during the uplink transmission process.

[0154] In the above embodiments, since the terminal determines the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix to realize uplink transmission, it can support the transmission mapping from the n second ports to the m first ports, thereby improving the uplink transmission performance of the terminal.

[0155] In some implementations, the terminal determines the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix and the following formula:

[0156] in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (υ-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

[0157] In this embodiment, the port index p in the first port f0 arrive It is related to the SRS resource index and the port corresponding to the SRS resource. For example, if the terminal receives two SRS resource indices configured on the network side, namely SRI 0 and SRI 1, and each SRS resource contains two SRS port indices of 1000 and 1001, then the index of the first port is {(SRI 0, 1000), (SRI 0, 1001), (SRI 1, 1000), (SRI 1, 1001)}; or it can be {(SRI 0, 1000), (SRI 1, 1000), (SRI 0, 1001), (SRI 1, 1001)}.

[0158] For example: The terminal receives two SRS resource indices configured on the network side, namely SRI 0 and SRI 1. The SRS resource corresponding to SRI 0 contains two SRS port indices 1000 and 1001, and the SRS resource corresponding to SRS 1 contains two SRS port indices 1002 and 1003. In this case, the index of the first port is 1000-1003.

[0159] In this implementation, the above formula can be used to achieve the transmission mapping from n second ports to m first ports.

[0160] It should be noted that the embodiments of this application are not limited to performing the transmission mapping from n second ports to m first ports through the above formula. For example, in some embodiments, non-symbol-level mapping or mapping of time-domain resource units smaller than the symbol can be performed. Alternatively, in some embodiments, the determined two-dimensional matrix may include precoding matrix information, thereby eliminating the need to multiply the two-dimensional matrix with the precoding matrix.

[0161] The following uses Figures 3 and 4 as examples to illustrate the transmission mapping from n second ports to m first ports provided in the embodiments of this application:

[0162] Example 1: The scenario used in this example is the one shown in Figure 3.

[0163] The terminal receives the first signaling sent by the network-side device. The first signaling indicates the first information (phase information mapped from n second ports to m first ports). The terminal transmits uplink transmissions (PUSCH, SRS, PUCCH) based on this bit information.

[0164] Phase information contains q1 first vectors A of dimension p (e.g., m / n). i ,i=0,1,…,q-1.

[0165] The first vector mentioned above is a DFT vector. Where O represents the oversampling factor, and O satisfies at least one of the following:

[0166] O is determined by the protocol, for example, O = 1;

[0167] O is reported by the terminal to the network side;

[0168] O is indicated by the network-side device configuration information.

[0169] q1 is determined by at least one of the following:

[0170] The agreement stipulates, for example, q = 1;

[0171] The terminal reports capability information to the network;

[0172] Network-side device configuration.

[0173] The terminal generates a two-dimensional matrix U based on the first vector, where U satisfies at least one of the following:

[0174] When n=2, q1=1:

[0175] When n=3, q1=1:

[0176] When n=4, q1=1:

[0177] When n=2, q1=2:

[0178] When n=3, q1=3: Or q1 = 2:

[0179] When n=4, q1=4: Or q1 = 2, The terminal performs the mapping between the n second ports and the m first ports based on the two-dimensional matrix U:

[0180] in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (v-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

[0181] Example 2: The scenario used in this example is the one shown in Figure 4.

[0182] The terminal receives a first signaling sent by the network-side device. The first signaling indicates phase information mapped from n second ports to m first ports. The terminal transmits uplink transmissions (PUSCH, SRS, PUCCH) based on the phase information.

[0183] Option 1: The aforementioned phase information includes q2 second vectors B, each with dimension m. i i = 0, ..., q-1;

[0184] The second vector is the DFT vector. Where O represents the oversampling factor, and O satisfies at least one of the following:

[0185] O is determined by the protocol, for example, O = 1;

[0186] O is reported by the UE to the network side;

[0187] O is indicated by the network-side device configuration information.

[0188] q2 is determined by at least one of the following:

[0189] The agreement stipulates, for example, q = 1;

[0190] UE reports capability information to the network;

[0191] Network-side device configuration.

[0192] The terminal generates a two-dimensional matrix U based on the second vector, where U satisfies at least one of the following:

[0193] When n=2, q=1: U=[B0 B0]

[0194] When n=2, q=2: U=[B0 B1]

[0195] When n=3, q=1: U=[B0 B0 B0]

[0196] When n=3, q=3: U=[B0 B1 B2] or q=2: U=[B0 B1 B0]

[0197] When n=4, q=1: U=[B0 B1 B2 B3] or q=2: U=[B0 B1 B0 B2]

[0198] The terminal performs the mapping between the n second ports and the m first ports based on the two-dimensional matrix U:

[0199] in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (v-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

[0200] Option 2: The aforementioned phase information includes q3 third vectors B with dimensions p (e.g., m / n). i The fourth vector with four dimensions of n, i = 0, 1, ..., q-1 and q.

[0201] The third vector is the DFT vector. Where O represents the oversampling factor, and O satisfies at least one of the following:

[0202] O is determined by the protocol, for example, O = 1;

[0203] O is reported by the UE to the network-side equipment;

[0204] O is indicated by the network-side device configuration information.

[0205] The fourth vector is the DFT vector. Where O represents the oversampling factor, and O satisfies at least one of the following:

[0206] O is determined by the protocol, for example, O = 1;

[0207] O is reported by the UE to the network-side equipment;

[0208] O is indicated by the network-side device configuration information.

[0209] q3 is determined by at least one of the following:

[0210] The agreement stipulates, for example, q3 = 1;

[0211] The terminal acts as a network-side device that reports capability information.

[0212] Network-side device configuration.

[0213] p4 is determined by at least one of the following:

[0214] The agreement specifies, for example, p4 = 1;

[0215] The terminal acts as a network-side device that reports capability information.

[0216] Network-side device configuration.

[0217] The terminal generates a two-dimensional matrix U based on the third and fourth vectors, where U is the Kronecker product of the third and fourth vectors. Satisfy at least one of the following:

[0218] When n=2, q3=1, q4=1 or 2;

[0219] When n=2, q3=2, p=2;

[0220] When n=3, q3=1, p=3 or q4=2;

[0221] When n=3, q3=3, p=2 or q4=3;

[0222] When n=4, q3=1, p=2 or q4=4;

[0223] When n=4, q3=2, p=2 or q4=4;

[0224] When n=4, q3=4, p=2 or q4=4.

[0225] As an optional implementation, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0226] m, n, O, q1, q2, q3, q4;

[0227] Wherein, O represents the oversampling factor.

[0228] For example, the above X = q1*ceil(log2(O*(m / n))) can be used to indicate a first vector for each ceil(log2(O*(m / n))) bit.

[0229] For example, X = q2*ceil(log2(O*(m))) can be used to ensure that each bit of the ceil(log2(O*(m))) pointer corresponds to a second vector.

[0230] For example, the above X = q3*ceil(log2(O*(m / n))) + q2*ceil(log2(O*(n))) can be implemented so that each ceil(log2(O*(m / n))) bit indicates a second vector, and each ceil(log2(O*(n))) bit indicates that the value of the field corresponds to a fourth vector.

[0231] The above implementation can realize the indication of the phase information by X bits, so as to save the overhead of the first signaling.

[0232] As an optional implementation, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0233] In this embodiment, since the second precoding matrix has m rows and n columns, it can support the transmission mapping of n second ports to m first ports, thereby improving the uplink transmission performance of the terminal.

[0234] Furthermore, since the phase information mapped from the n second ports to the m first ports includes the second precoding matrix, it is not necessary to determine the two-dimensional matrix described in the previous implementation, thereby saving the computational overhead of the terminal.

[0235] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0236] The number of antenna ports is m;

[0237] The rank is n;

[0238] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0239] Coherent transmission supports full-coherent transmission.

[0240] A codebook subset is represented as a precoding set, which is the set of all precodings that satisfy certain conditions.

[0241] The aforementioned second precoding matrix, selected from the codebook subset, can be understood as the precoding matrix selected from the codebook subset based on the aforementioned first signaling, such as the first signaling indicating the corresponding index or sequence number of the aforementioned second precoding matrix.

[0242] In this implementation, since the codebook subset satisfies the requirement of m antenna ports, it can support the transmission mapping of n second ports to m first ports, thereby improving the uplink transmission performance of the terminal.

[0243] In this implementation, since the codebook subset satisfies the rank of n, it can support the transmission mapping of n second ports to m first ports, thereby improving the uplink transmission performance of the terminal.

[0244] In this implementation, since the codebook subset satisfies the requirement of partially coherent coherent transmission and the number of ports in each coherent transmission group is equal to m / n, the scenario shown in Figure 3 is supported, thereby improving the uplink transmission performance of the terminal.

[0245] In this implementation, since the codebook subset satisfies coherent transmission and supports full coherence, the scenario shown in Figure 4 is supported, thereby improving the uplink transmission performance of the terminal.

[0246] The above codebook subset is illustrated below with two examples:

[0247] Example 3: In this example, the first port mapped by different second ports is different, as shown in Figure 3.

[0248] With 4 first ports and 2 second ports, the phase information corresponds to a second precoding matrix with 4 rows and 2 columns. This second precoding matrix is ​​selected from a codebook subset with 4 antenna ports, a transmission rank of 2, and partial-coherent characteristics. See Table 1 for details.

[0249] Table 1:

[0250] The first signaling mentioned above includes an X-bit indicator field, the length of which is 3 bits. The value of the indicator field corresponds to the second precoding matrix in the codebook subset, and the indication method is shown in Table 2 below:

[0251] Table 2:

[0252] Taking a first port with 8 ports and a second port with 2 ports as an example, the above phase information corresponds to a matrix with 8 rows and 2 columns. This matrix is ​​selected from a subset of codebooks with 8 antenna ports, a transmission rank of 2, and partial coherence. The subset of codebooks is shown in Table 3 below:

[0253] Table 3:

[0254] Wherein, submatrix As shown in Table 4 below:

[0255] Table 4:

[0256] The first signaling includes an X-bit indicator field, where X = 7. The length of the indicator field is 7 bits. The value of the indicator field corresponds to the precoding in the codebook subset. The indication method is shown in Table 5 below:

[0257] Table 5:

[0258] Taking a first port with 8 ports and a second port with 4 ports as an example, the above phase information corresponds to a precoding matrix with 8 rows and 4 columns. The precoding matrix is ​​selected from a codebook subset with 8 antenna ports, a transmission rank of 4, and partial coherence. The number of coherent ports in each group of the codebook subset is 2. The specific codebook subsets are shown in Table 6 below:

[0259] Table 6:

[0260] Wherein, submatrix As shown in Table 7 below:

[0261] Table 7:

[0262] The first signaling includes an X-bit indicator field, where X = 3. The length of the indicator field is 3 bits. The value of the indicator field corresponds to the precoding in the codebook subset. The indication method is shown in Table 8 below:

[0263] Table 8:

[0264] Example 4: In this example, each second port maps to all first ports, as shown in Figure 4.

[0265] Taking a case where the number of first ports is 4 and the number of second ports is 1 as an example, the above phase information corresponds to a precoding matrix with 4 rows and 1 column. The precoding matrix is ​​selected from a codebook subset with 4 antenna ports, a transmission rank of 1, and full coherence. The codebook subset is shown in Table 9 below:

[0266] Table 9:

[0267] The first signaling above includes an X-bit indicator field, the length of which is 4 bits. The value of the indicator field corresponds to the precoding in the codebook subset, and the indication method is shown in Table 10 below:

[0268] Table 10:

[0269] Taking a case where the number of first ports is 4 and the number of second ports is 2, the aforementioned phase information corresponds to a precoding matrix with 4 rows and 2 columns. The precoding matrix is ​​selected from a subset of codebooks with 4 antenna ports, a transmission rank of 2, and full coherence. The codebook subset is shown in Table 11 below:

[0270] Table 11:

[0271] The first signaling above includes an X-bit indicator field, the length of which is 3 bits. The value of the indicator field corresponds to the precoding in the codebook subset, and the indication method is shown in Table 12 below:

[0272] Table 12:

[0273] Taking a case where the number of first ports is 8 and the number of second ports is 1 as an example, the above phase information corresponds to a precoding matrix with 8 rows and 1 column. The precoding matrix is ​​selected from a codebook subset with 8 antenna ports, a transmission rank of 1, and full coherence. The codebook subset is shown in Table 13 below:

[0274] Table 13:

[0275] The first signaling above includes an X-bit indicator field, the length of which is 4 bits. The value of the indicator field corresponds to the precoding in the codebook subset, and the indication method is shown in Table 14 below:

[0276] Table 14:

[0277] Taking a first port with 8 ports and a second port with 2 ports as an example, the above phase information corresponds to a matrix with 8 rows and 2 columns. This matrix is ​​selected from a codebook subset with 8 antenna ports, a transmission rank of 2, and full coherence. The codebook subset is shown in Table 15 below:

[0278] Table 15:

[0279] The first signaling mentioned above includes an X-bit indicator field, the length of which is 5 bits. The value of the indicator field corresponds to the precoding in the codebook subset, and the indication method is shown in Table 16 below:

[0280] Table 16:

[0281] Taking a first port with 8 ports and a second port with 4 ports as an example, the above phase information corresponds to a matrix with 8 rows and 4 columns. This matrix is ​​selected from a codebook subset with 8 antenna ports, a transmission rank of 4, and full coherence. The codebook subset is shown in Table 17 below:

[0282] Table 17:

[0283] The above signaling includes an X-bit indicator field, the length of which is 5 bits. The value of the indicator field corresponds to the precoding in the codebook subset, and the indication method is shown in Table 18 below:

[0284] Table 18:

[0285] It should be noted that the codebook subsets shown in the table above are merely illustrative examples. In some implementations, the codebook subsets may be codebook subsets added to a table already defined in the protocol, partial codebook subsets from a codebook subset table already defined in the protocol, or newly created codebook subset tables.

[0286] As an optional implementation, the above TCI state is associated with at least one of the following:

[0287] Vector index, TPMI index, downlink reference signal;

[0288] Wherein, the vector index is the index of the vector included in the phase information;

[0289] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0290] The downlink reference signal is used to determine phase information.

[0291] The vectors included in the phase information described above can refer to the first vector, second vector, third vector, or fourth vector described in the above embodiments, or vectors that are different from the first vector, second vector, third vector, or fourth vector.

[0292] In this implementation, a TCI state-associated vector index can be implemented, thereby indicating the vectors included in the phase information through the vector index, so as to reduce the latency of the terminal in obtaining the phase information.

[0293] In this implementation, since the precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information, the precoding matrix included in the phase information can be indicated by the TCI state to reduce the latency of the terminal in obtaining the phase information.

[0294] In some implementations, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0295] The number of antenna ports is m;

[0296] The rank is n;

[0297] Coherent transmission supports full coherence.

[0298] Since the number of antenna ports is m, this allows n second ports to be mapped to m first ports.

[0299] Since the precoding matrix has a rank of n, it can support the transmission mapping of n second ports to m first ports, thereby improving the uplink transmission performance of the terminal.

[0300] The precoding matrix satisfies coherent transmission and supports full coherence, thereby improving the uplink transmission performance of the terminal.

[0301] The aforementioned downlink reference signal is used to determine phase information, as described in the preceding description, and will not be repeated here.

[0302] In some implementations, the effective time of the TCI state is determined based on a first time and / or a second time, wherein the first time is the time when the TCI state is switched on the terminal side, and the second time is the time when the terminal calculates phase information based on the downlink reference signal. The effective time of the TCI state = the first time + the second time.

[0303] In this embodiment, the terminal obtains a first signaling, which indicates at least one of the following: phase information of n second ports mapped to m first ports, where the second ports are uplink transmission ports and the first ports are ports configured for the terminal by the network-side device, where m is an integer greater than 1 and n is an integer less than or equal to m; TCI status, which indicates the phase information; and a downlink reference signal, which determines the phase information. Thus, since the first signaling indicates at least one of the phase information of n second ports mapped to m first ports, the TCI status, and the downlink reference signal, the first signaling indicates the phase information. Therefore, the terminal can obtain the phase information directly from the first signaling, avoiding cumbersome processing operations and reducing the latency of the terminal obtaining the phase information.

[0304] Please refer to Figure 5, which is a flowchart of another phase information indication method provided in an embodiment of this application. As shown in Figure 5, it includes the following steps:

[0305] Step 501: The network-side device sends a first signaling message, which is used to indicate at least one of the following:

[0306] The phase information is mapped from n second ports to m first ports. The second port is the port for uplink transmission, and the first port is the port configured by the network-side device for the terminal. m is an integer greater than 1, and n is an integer less than or equal to m.

[0307] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0308] Downlink reference signal, which is used to determine phase information.

[0309] Optionally, the phase information mapped from the n second ports to the m first ports includes one of the following:

[0310] q1 first vectors of dimension p;

[0311] A second vector of dimension m with q2 dimensions;

[0312] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0313] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0314] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following:

[0315] m, n, O;

[0316] Wherein, O represents the oversampling factor.

[0317] Optionally, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0318] m, n, O, q1, q2, q3, q4;

[0319] Wherein, O represents the oversampling factor.

[0320] Optionally, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0321] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0322] The number of antenna ports is m;

[0323] The rank is n;

[0324] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0325] Coherent transmission supports full coherence.

[0326] Optionally, the TCI state is associated with at least one of the following:

[0327] Vector index, precoding information and layer TPMI index, downlink reference signal;

[0328] Wherein, the vector index is the index of the vector included in the phase information;

[0329] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0330] The downlink reference signal is used to determine phase information.

[0331] Optionally, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0332] The number of antenna ports is m;

[0333] The rank is n;

[0334] Coherent transmission supports full coherence.

[0335] It should be noted that this embodiment is an implementation of the network-side device corresponding to the embodiment shown in Figure 2. For the specific implementation, please refer to the relevant description of the embodiment shown in Figure 2. In order to avoid repeated description, this embodiment will not be repeated.

[0336] The phase information indication method provided in this application can be executed by a phase information indication device. This application uses an example of a phase information indication device executing the phase information indication method to illustrate the phase information indication device provided in this application.

[0337] This application provides a phase information indicating device. As an example, the phase information indicating device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0338] The phase information indicating device may include a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor may include a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), an Artificial Intelligence (AI) processor, a Graphics Processing Unit (GPU), an Application Specific Integrated Circuit (ASIC), a Network Processor (NP), a Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules may be implemented by a communication interface, which may include one or more of the following: a transceiver, pins, circuits, a bus, and a radio frequency unit.

[0339] Specifically, referring to Figure 6, when the phase information indicating device is a terminal or a component within a terminal, the phase information indicating device 600 includes:

[0340] The receiving module 601 is configured to acquire a first signaling, the first signaling being used to indicate at least one of the following:

[0341] The phase information of n second ports mapped to the m first ports, where the second ports are uplink transmission ports and the first ports are ports configured by the network-side device for the terminal, m is an integer greater than 1 and n is an integer less than or equal to m;

[0342] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0343] Downlink reference signal, which is used to determine phase information.

[0344] Optionally, the phase information mapped from the n second ports to the m first ports includes one of the following:

[0345] q1 first vectors of dimension p;

[0346] A second vector of dimension m with q2 dimensions;

[0347] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0348] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0349] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following:

[0350] m, n, O;

[0351] Wherein, O represents the oversampling factor.

[0352] Optionally, the device further includes:

[0353] The processing module is used to determine a two-dimensional matrix based on the phase information of the n second ports mapped to the m first ports;

[0354] The processing module also uses the two-dimensional matrix to determine the transmission mapping from the n second ports to the m first ports, and the transmission mapping is used for uplink transmission.

[0355] Optionally, the processing module determines the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix and the following formula:

[0356] in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (v-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

[0357] Optionally, when the phase information mapped from the n second ports to the m first ports includes q1 first vectors of dimension p, the two-dimensional matrix satisfies one of the following:

[0358] When n=2, q1=1:

[0359] When n=3, q1=1:

[0360] When n=4, q1=1:

[0361] When n=2, q1=2:

[0362] When n=3, q1=3: Or q1 = 2:

[0363] When n=4, q1=4: Or q1 = 2,

[0364] Wherein, U represents the two-dimensional matrix, and A0, A1, A2, and A3 represent the q1 first vectors with dimension p.

[0365] Optionally, when the phase information mapped from the n second ports to the m first ports includes q2 second vectors of dimension m, the two-dimensional matrix satisfies one of the following:

[0366] When n=2, q2=1: U=[B0 B0]

[0367] When n=2, q²=2: U=[B0 B1]

[0368] When n=3, q2=1: U=[B0 B0 B0]

[0369] When n=3, q2=3: U=[B0 B1 B2], or q2=2: U=[B0 B1 B0]

[0370] When n=4, q2=1: U=[B0 B1 B2 B3], or q2=2: U=[B0 B1 B0 B2]

[0371] Wherein, U represents the two-dimensional matrix, and B0, B1, B2, and B3 represent the q2 second vectors with dimension m.

[0372] Optionally, when the phase information mapped from the n second ports to the m first ports includes q3 third vectors of dimension p and q4 fourth vectors of dimension n, the two-dimensional matrix is:

[0373] Where U represents the two-dimensional matrix, B0…B q-1 Let q represent the third vector with dimension p. This represents the fourth vector of the four dimensions, each with dimension n.

[0374] Optionally, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0375] m, n, O, q1, q2, q3, q4;

[0376] Wherein, O represents the oversampling factor.

[0377] Optionally, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0378] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0379] The number of antenna ports is m;

[0380] The rank is n;

[0381] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0382] Coherent transmission supports full coherence.

[0383] Optionally, the TCI state is associated with at least one of the following:

[0384] Vector index, precoding information and layer TPMI index, downlink reference signal;

[0385] Wherein, the vector index is the index of the vector included in the phase information;

[0386] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0387] The downlink reference signal is used to determine phase information.

[0388] Optionally, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0389] The number of antenna ports is m;

[0390] The rank is n;

[0391] Coherent transmission supports full coherence.

[0392] The aforementioned phase information indication device can improve the latency of the terminal in acquiring phase information.

[0393] The phase information indicating device provided in this application embodiment can implement the various processes implemented in the method embodiment of FIG2 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0394] Referring to Figure 7, when the phase information indicating device is a network-side device or a component within a network-side device, the phase information indicating device 700 includes:

[0395] The sending module 701 is configured to send a first signaling, the first signaling being used to indicate at least one of the following:

[0396] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m.

[0397] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0398] Downlink reference signal, which is used to determine phase information.

[0399] Optionally, the phase information mapping the n second ports to the m first ports includes the following:

[0400] q1 first vectors of dimension p;

[0401] A second vector of dimension m with q2 dimensions;

[0402] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0403] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0404] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following:

[0405] m, n, O;

[0406] Wherein, O represents the oversampling factor.

[0407] Optionally, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0408] m, n, O, q1, q2, q3, q4;

[0409] Wherein, O represents the oversampling factor.

[0410] Optionally, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0411] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0412] The number of antenna ports is m;

[0413] The rank is n;

[0414] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0415] Coherent transmission supports full coherence.

[0416] Optionally, the TCI state is associated with at least one of the following:

[0417] Vector index, precoding information and layer TPMI index, downlink reference signal;

[0418] Wherein, the vector index is the index of the vector included in the phase information;

[0419] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0420] The downlink reference signal is used to determine phase information.

[0421] Optionally, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0422] The number of antenna ports is m;

[0423] The rank is n;

[0424] Coherent transmission supports full coherence.

[0425] The aforementioned phase information indication device can improve the latency of the terminal in acquiring phase information.

[0426] The phase information indicating device provided in this application embodiment can realize the various processes implemented in the method embodiment of FIG5 and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0427] As shown in Figure 8, this application embodiment also provides a communication device 800, including a processor 801 and a memory 802. The memory 802 stores a program or instructions that can run on the processor 801. For example, when the communication device 800 is a terminal, the program or instructions executed by the processor 801 implement the various steps of the phase information indication method embodiment on the terminal side described above, and achieve the same technical effect. When the communication device 800 is a network-side device, the program or instructions executed by the processor 801 implement the various steps of the phase information indication method embodiment on the network-side device described above, and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0428] This application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps in the method embodiment shown in FIG2. This terminal embodiment corresponds to the above-described terminal-side method embodiment, and all implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and can achieve the same technical effect. The terminal may be the phase information indicating device shown in FIG6. Specifically, FIG9 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of this application.

[0429] The terminal 900 includes, but is not limited to, at least some of the following components: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0430] Those skilled in the art will understand that the terminal 900 may also include a power supply (such as a battery) for powering various components. The power supply can be logically connected to the processor 910 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The terminal structure shown in Figure 9 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0431] It should be understood that, in this embodiment, the input unit 904 may include a graphics processor 9041 and a microphone 9042. The graphics processor 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0432] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 901 can transmit it to the processor 910 for processing; in addition, the radio frequency unit 901 can send uplink data to the network-side device. Typically, the radio frequency unit 901 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0433] The memory 909 can be used to store software programs or instructions, as well as various data. The memory 909 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0434] Processor 910 may include one or more processing units; optionally, processor 910 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0435] The radio frequency unit 901 is used to acquire a first signaling, the first signaling being used to indicate at least one of the following:

[0436] The phase information of n second ports mapped to the m first ports: the second port is the port for uplink transmission, the first port is the port configured by the network-side device for the terminal, m is an integer greater than 1, and n is an integer less than or equal to m;

[0437] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0438] Downlink reference signal, which is used to determine phase information.

[0439] Optionally, the phase information mapped from the n second ports to the m first ports includes one of the following:

[0440] q1 first vectors of dimension p;

[0441] A second vector of dimension m with q2 dimensions;

[0442] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0443] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0444] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following:

[0445] m, n, O;

[0446] Wherein, O represents the oversampling factor.

[0447] Optionally, the processor 910 is configured to determine a two-dimensional matrix based on the phase information of the n second ports mapped to the m first ports; and to determine a transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix, the transmission mapping being used for uplink transmission.

[0448] Optionally, determining the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix includes:

[0449] The transmission mapping from the n second ports to the m first ports is determined based on the two-dimensional matrix and the following formula:

[0450] in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (υ-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

[0451] Optionally, when the phase information mapped from the n second ports to the m first ports includes q1 first vectors of dimension p, the two-dimensional matrix satisfies one of the following:

[0452] When n=2, q1=1:

[0453] When n=3, q1=1:

[0454] When n=4, q1=1:

[0455] When n=2, q1=2:

[0456] When n=3, q1=3: Or q1 = 2:

[0457] When n=4, q1=4: Or q1 = 2,

[0458] Wherein, U represents the two-dimensional matrix, and A0, A1, A2, and A3 represent the q1 first vectors with dimension p.

[0459] Optionally, when the phase information mapped from the n second ports to the m first ports includes q2 second vectors of dimension m, the two-dimensional matrix satisfies one of the following:

[0460] When n=2, q2=1: U=[B0 B0]

[0461] When n=2, q²=2: U=[B0 B1]

[0462] When n=3, q2=1: U=[B0 B0 B0]

[0463] When n=3, q2=3: U=[B0 B1 B2], or q2=2: U=[B0 B1 B0]

[0464] When n=4, q2=1: U=[B0 B1 B2 B3], or q2=2: U=[B0 B1 B0 B2]

[0465] Wherein, U represents the two-dimensional matrix, and B0, B1, B2, and B3 represent the q2 second vectors with dimension m.

[0466] Optionally, when the phase information mapped from the n second ports to the m first ports includes q3 third vectors of dimension p and q4 fourth vectors of dimension n, the two-dimensional matrix is:

[0467] Where U represents the two-dimensional matrix, B0…B q-1 Let q represent the third vector with dimension p. This represents the fourth vector of the four dimensions, each with dimension n.

[0468] Optionally, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0469] m, n, O, q1, q2, q3, q4;

[0470] Wherein, O represents the oversampling factor.

[0471] Optionally, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0472] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0473] The number of antenna ports is m;

[0474] The rank is n;

[0475] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0476] Coherent transmission supports full coherence.

[0477] Optionally, the TCI state is associated with at least one of the following:

[0478] Vector index, precoding information and layer TPMI index, downlink reference signal;

[0479] Wherein, the vector index is the index of the vector included in the phase information;

[0480] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0481] The downlink reference signal is used to determine phase information.

[0482] Optionally, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0483] The number of antenna ports is m;

[0484] The rank is n;

[0485] Coherent transmission supports full coherence.

[0486] The aforementioned terminal can improve the latency of the terminal acquiring phase information.

[0487] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the phase information indication method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0488] This application also provides a network-side device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method embodiment shown in FIG5. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0489] Specifically, this application also provides a network-side device. As shown in FIG10, the network-side device 1000 includes a processor 1001, a network interface 1002, and a memory 1003. The network-side device may be the phase information indicating device shown in FIG7. The network interface 1002 is, for example, a Common Public Radio Interface (CPRI).

[0490] Specifically, the network-side device 1000 in this application embodiment further includes: instructions or programs stored in memory 1003 and executable on processor 1001. Processor 1001 calls the instructions or programs in memory 1003 to execute the methods executed by each module shown in FIG7 and achieve the same technical effect. To avoid repetition, it will not be described in detail here.

[0491] Network interface 1002 is used to send a first signaling, the first signaling being used to indicate at least one of the following:

[0492] The phase information is mapped from n second ports to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m.

[0493] Transmission Configuration Indicator (TCI) status, which indicates phase information;

[0494] Downlink reference signal, which is used to determine phase information.

[0495] Optionally, the phase information mapping the n second ports to the m first ports includes the following:

[0496] q1 first vectors of dimension p;

[0497] A second vector of dimension m with q2 dimensions;

[0498] q3 third vectors with dimension p and q4 fourth vectors with dimension n;

[0499] Wherein, q1, q2, q3, q4 and p are all positive integers.

[0500] Optionally, at least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following:

[0501] m, n, O;

[0502] Wherein, O represents the oversampling factor.

[0503] Optionally, the phase information of the n second ports mapped to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following:

[0504] m, n, O, q1, q2, q3, q4;

[0505] Wherein, O represents the oversampling factor.

[0506] Optionally, the phase information of the n second ports mapped to the m first ports includes a second precoding matrix, wherein the second precoding matrix has m rows and n columns.

[0507] Optionally, the second precoding matrix is ​​a precoding matrix selected from a codebook subset, the codebook subset satisfying at least one of the following:

[0508] The number of antenna ports is m;

[0509] The rank is n;

[0510] Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n;

[0511] Coherent transmission supports full coherence.

[0512] Optionally, the TCI state is associated with at least one of the following:

[0513] Vector index, precoding information and layer TPMI index, downlink reference signal;

[0514] Wherein, the vector index is the index of the vector included in the phase information;

[0515] The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information;

[0516] The downlink reference signal is used to determine phase information.

[0517] Optionally, the precoding matrix indicated by the TPMI index satisfies at least one of the following:

[0518] The number of antenna ports is m;

[0519] The rank is n;

[0520] Coherent transmission supports full coherence.

[0521] The aforementioned network-side equipment can improve the latency for terminals to acquire phase information.

[0522] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the phase information indication method embodiment and achieve the same or corresponding technical effect. To avoid repetition, it will not be described again here.

[0523] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described phase information indication method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0524] The processor mentioned above is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0525] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described phase information indication method embodiments and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0526] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0527] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described phase information indication method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0528] This application also provides a wireless communication system, including: a terminal and a network-side device. The terminal can be used to execute the steps of the terminal-side phase information indication method provided in this application, and the network-side device can be used to execute the steps of the network-side device phase information indication method provided in this application.

[0529] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0530] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0531] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A phase information indication method, comprising: The terminal acquires a first signaling message, the first signaling message being used to indicate at least one of the following: The phase information of n second ports mapped to m first ports, where the second ports are uplink transmission ports, and the first ports are ports configured by the network-side device for the terminal, where m is an integer greater than 1, and n is an integer less than or equal to m; Transmission Configuration Indicator (TCI) status, which indicates phase information; Downlink reference signal, which is used to determine phase information.

2. The method according to claim 1, wherein, The phase information mapped from the n second ports to the m first ports includes the following: q1 first vectors of dimension p; A second vector of dimension m with q2 dimensions; q3 third vectors with dimension p and q4 fourth vectors with dimension n; Wherein, q1, q2, q3, q4 and p are all positive integers.

3. The method according to claim 2, wherein, At least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following: m, n, O; Wherein, O represents the oversampling factor.

4. The method according to any one of claims 1 to 3, wherein, The method further includes: A two-dimensional matrix is ​​determined based on the phase information of the n second ports mapped to the m first ports; Based on the two-dimensional matrix, the transmission mapping from the n second ports to the m first ports is determined, and the transmission mapping is used for uplink transmission.

5. The method according to claim 4, wherein, The terminal determines the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix, including: The terminal determines the transmission mapping from the n second ports to the m first ports based on the two-dimensional matrix and the following formula: in, and These represent port indices p. f0 and The signal transmitted on the first port, where U represents the two-dimensional matrix, W represents the first precoding matrix, and y (0) and y (υ-1) Let i represent the data modulation symbols of the transport layer with transport layer indices 0 and (υ-1), respectively, and let i represent symbol i.

6. The method according to claim 4 or 5, wherein, When the phase information mapped from the n second ports to the m first ports includes q1 first vectors of dimension p, the two-dimensional matrix satisfies one of the following: When n=2, q1=1: When n=3, q1=1: When n=4, q1=1: When n=2, q1=2: When n=3, q1=3: Or q1 = 2: When n=4, q1=4: Or q1 = 2, Wherein, U represents the two-dimensional matrix, and A0, A1, A2, and A3 represent the q1 first vectors with dimension p.

7. The method according to claim 4 or 5, wherein, When the phase information mapped from the n second ports to the m first ports includes q² second vectors of dimension m, the two-dimensional matrix satisfies one of the following: When n=2, q2=1: U=[B0 B0] When n=2, q²=2: U=[B0 B1] When n=3, q2=1: U=[B0 B0 B0] When n=3, q2=3: U=[B0 B1 B2], or q2=2: U=[B0 B1 B0] When n=4, q2=1: U=[B0 B1 B2 B3], or q2=2: U=[B0 B1 B0 B2] Wherein, U represents the two-dimensional matrix, and B0, B1, B2, and B3 represent the q2 second vectors with dimension m.

8. The method according to claim 4 or 5, wherein, When the phase information mapped from the n second ports to the m first ports includes q3 third vectors of dimension p and q4 fourth vectors of dimension n, the two-dimensional matrix is: Where U represents the two-dimensional matrix, B0…B q-1 Let q represent the third vector with dimension p. This represents the fourth vector of the four dimensions, each with dimension n.

9. The method according to any one of claims 2 to 8, wherein, The phase information mapping the n second ports to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following: m, n, O, q1, q2, q3, q4; Wherein, O represents the oversampling factor.

10. The method according to claim 1, wherein, The phase information mapped from the n second ports to the m first ports includes a second precoding matrix, which has m rows and n columns.

11. The method according to claim 10, wherein, The second precoding matrix is ​​a precoding matrix selected from a subset of the codebook, wherein the subset of the codebook satisfies at least one of the following: The number of antenna ports is m; The rank is n; Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n; Coherent transmission supports full coherence.

12. The method according to any one of claims 1 to 11, wherein, The TCI state is associated with at least one of the following: Vector index, precoding information and layer TPMI index, downlink reference signal; Wherein, the vector index is the index of the vector included in the phase information; The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information; The downlink reference signal is used to determine phase information.

13. The method according to claim 12, wherein, The precoding matrix indicated by the TPMI index satisfies at least one of the following: The number of antenna ports is m; The rank is n; Coherent transmission supports full coherence.

14. A phase information indication method, comprising: The network-side device sends a first signaling message, the first signaling message being used to indicate at least one of the following: The phase information of n second ports mapped to m first ports, where the second ports are uplink transmission ports, and the first ports are ports configured by the network-side device for the terminal, where m is an integer greater than 1, and n is an integer less than or equal to m; Transmission Configuration Indicator (TCI) status, which indicates phase information; Downlink reference signal, which is used to determine phase information.

15. The method according to claim 14, wherein, The phase information mapped from the n second ports to the m first ports includes the following: q1 first vectors of dimension p; A second vector of dimension m with q2 dimensions; q3 third vectors with dimension p and q4 fourth vectors with dimension n; Wherein, q1, q2, q3, q4 and p are all positive integers.

16. The method according to claim 15, wherein, At least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following: m, n, O; Wherein, O represents the oversampling factor.

17. The method according to claim 15 or 16, wherein, The phase information mapping the n second ports to the m first ports is indicated by X bits in the first signaling, the length of which is related to at least one of the following: m, n, O, q1, q2, q3, q4; Wherein, O represents the oversampling factor.

18. The method according to claim 14, wherein, The phase information mapped from the n second ports to the m first ports includes a second precoding matrix, which has m rows and n columns.

19. The method according to claim 18, wherein, The second precoding matrix is ​​a precoding matrix selected from a subset of the codebook, wherein the subset of the codebook satisfies at least one of the following: The number of antenna ports is m; The rank is n; Coherent transmission supports partial coherence, and the number of ports in each coherent transmission group is equal to m / n; Coherent transmission supports full coherence.

20. The method according to any one of claims 14 to 19, wherein, The TCI state is associated with at least one of the following: Vector index, precoding information and layer TPMI index, downlink reference signal; Wherein, the vector index is the index of the vector included in the phase information; The precoding matrix indicated by the TPMI index is the precoding matrix included in the phase information; The downlink reference signal is used to determine phase information.

21. The method according to claim 20, wherein, The precoding matrix indicated by the TPMI index satisfies at least one of the following: The number of antenna ports is m; The rank is n; Coherent transmission supports full coherence.

22. A phase information indicating device, comprising: The receiving module is configured to acquire a first signaling, the first signaling being configured to indicate at least one of the following: The phase information of n second ports is mapped to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m. Transmission Configuration Indicator (TCI) status, which indicates phase information; Downlink reference signal, which is used to determine phase information.

23. The apparatus according to claim 22, wherein, The phase information mapped from the n second ports to the m first ports includes the following: q1 first vectors of dimension p; A second vector of dimension m with q2 dimensions; q3 third vectors with dimension p and q4 fourth vectors with dimension n; Wherein, q1, q2, q3, q4 and p are all positive integers.

24. The apparatus according to claim 23, wherein, At least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following: m, n, O; Wherein, O represents the oversampling factor.

25. The apparatus according to any one of claims 22 to 24, wherein, The device further includes: The processing module is used to determine a two-dimensional matrix based on the phase information of the n second ports mapped to the m first ports; The processing module also uses the two-dimensional matrix to determine the transmission mapping from the n second ports to the m first ports, and the transmission mapping is used for uplink transmission.

26. A phase information indicating device, comprising: The sending module is configured to send a first signaling, the first signaling being configured to indicate at least one of the following: The phase information of n second ports is mapped to m first ports. The second ports are uplink transmission ports, and the first ports are ports configured by the network-side devices for the terminals. m is an integer greater than 1, and n is an integer less than or equal to m. Transmission Configuration Indicator (TCI) status, which indicates phase information; Downlink reference signal, which is used to determine phase information.

27. The apparatus according to claim 26, wherein, The phase information mapped from the n second ports to the m first ports includes the following: q1 first vectors of dimension p; A second vector of dimension m with q2 dimensions; q3 third vectors with dimension p and q4 fourth vectors with dimension n; Wherein, q1, q2, q3, q4 and p are all positive integers.

28. The apparatus according to claim 27, wherein, At least one of the first vector, the second vector, the third vector, and the fourth vector is a vector selected from the Discrete Fourier Transform (DFT) vectors, wherein the elements of the DFT vectors are related to at least one of the following: m, n, O; Wherein, O represents the oversampling factor.

29. A terminal comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the phase information indication method as claimed in any one of claims 1 to 13.

30. A network-side device, comprising a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the phase information indication method as claimed in any one of claims 14 to 21.

31. A readable storage medium storing a program or instructions that, when executed by a processor, implement the steps of the phase information indication method as claimed in any one of claims 1 to 13, or implement the steps of the phase information indication method as claimed in any one of claims 14 to 21.

32. A computer program product stored in a storage medium, the computer program product being executed by at least one processor to implement the steps of the phase information indication method as claimed in any one of claims 1 to 13, or to implement the steps of the phase information indication method as claimed in any one of claims 14 to 21.

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