Methods, devices, and storage media for reporting amplitude coefficients

Abstract

This disclosure relates to a method, apparatus, and storage medium for reporting amplitude coefficients, and pertains to the field of communication technology. It aims to improve the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting. The method includes: determining a target amplitude coefficient reporting method in response to supporting at least two amplitude coefficient reporting methods; and reporting amplitude coefficients to a network device based on the target amplitude coefficient reporting method.

Description

Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a method, apparatus and storage medium for reporting amplitude coefficients. Background Technology

[0002] When a network device (such as a base station) has multiple Transmission Reception Points (TRPs), multiple TRPs (Multi-TRPs) / panels can be used to provide services to terminals.

[0003] In related technologies, there are multiple methods for terminals to report the amplitude coefficient of TRP to network devices. If a terminal has the ability to support multiple reporting schemes, then how the terminal determines the actual amplitude coefficient reporting method to use is a problem that needs to be solved. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a method, apparatus and storage medium for reporting amplitude coefficients.

[0005] According to a first aspect of the present disclosure, a method for reporting amplitude coefficients is provided, applied to a terminal, comprising: determining a target amplitude coefficient reporting method in response to supporting at least two amplitude coefficient reporting methods; and reporting amplitude coefficients to a network device based on the target amplitude coefficient reporting method.

[0006] In one embodiment, the method for determining the target amplitude coefficient reporting method includes: receiving first indication information sent by a network device, the first indication information being used to indicate a first amplitude coefficient reporting method; and determining the first amplitude coefficient reporting method as the target amplitude coefficient reporting method based on the first indication information.

[0007] In one embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0008] In one embodiment, the method for determining the target amplitude coefficient reporting method includes: determining the target amplitude coefficient reporting method and sending second indication information to a network device, wherein the second indication information is used to indicate the target amplitude coefficient reporting method.

[0009] In one embodiment, a third indication information from a network device is received, the third indication information being used to enable the terminal to report a second indication information.

[0010] In one embodiment, the second indication information is carried in channel state information (CSI).

[0011] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0012] In one embodiment, the first information further includes at least one of the following:

[0013] Channel State Information Reference Signal Resource Indicator (CRI);

[0014] Layer rank indication information;

[0015] Non-zero power NZP channel state information reference signal CSI-RS selection information;

[0016] Broadband Channel Quality Information (CQI);

[0017] Number of non-zero bandwidth amplitude coefficients;

[0018] Information indicating the number of non-zero coefficients;

[0019] Non-zero coefficient position indication information;

[0020] Pattern indication information.

[0021] In one embodiment, the second information includes precoded matrix indication PMI information;

[0022] The PMI information includes at least one of the following:

[0023] Spatial basis vector parameter information;

[0024] Frequency domain basis vector parameter information;

[0025] Non-zero coefficient position indication information;

[0026] Phase coefficient information;

[0027] Amplitude coefficient information.

[0028] In one embodiment, the method further includes: determining the transmission method of the terminal performing the Physical Downlink Shared Channel (PDSCH) as the target transmission method.

[0029] In one embodiment, the target transmission method satisfies at least one of the following:

[0030] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0031] The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource;

[0032] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0033] The terminal reports frequency domain basis vector parameter information for each CMR;

[0034] Each NZP CSI-RS resource corresponds to a Transmit / Receive Point (TRP);

[0035] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0036] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0037] In one embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0038] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0039] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

[0040] According to a second aspect of the present disclosure, an amplitude coefficient reporting method is provided, applied to a network device, comprising: receiving amplitude coefficients reported by a terminal based on a target amplitude coefficient reporting method.

[0041] In one embodiment, a first indication information is sent to the terminal, the first indication information being used to indicate a first amplitude coefficient reporting method, the first amplitude coefficient reporting method being the target amplitude coefficient reporting method of the terminal.

[0042] In one embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0043] In one embodiment, a second indication information sent by the terminal is received, the second indication information being used to instruct the terminal on the target amplitude coefficient reporting method.

[0044] In one embodiment, the method further includes: sending third indication information to the terminal, the third indication information being used to enable the terminal to report second indication information.

[0045] In one embodiment, the second indication information is carried in channel state information (CSI).

[0046] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0047] In one embodiment, the first information further includes at least one of the following:

[0048] Channel State Information Reference Signal Resource Indicator (CRI);

[0049] Layer rank indication information;

[0050] Non-zero power NZP channel state information reference signal CSI-RS selection information;

[0051] Broadband Channel Quality Information (CQI);

[0052] Number of non-zero bandwidth amplitude coefficients;

[0053] Information indicating the number of non-zero coefficients;

[0054] Non-zero coefficient position indication information;

[0055] Pattern indication information.

[0056] In one embodiment, the second information includes precoded matrix indication PMI information;

[0057] The PMI information includes at least one of the following:

[0058] Spatial basis vector parameter information;

[0059] Frequency domain basis vector parameter information;

[0060] Non-zero coefficient position indication information;

[0061] Phase coefficient information;

[0062] Amplitude coefficient information.

[0063] In one embodiment, the method by which the terminal transmits the Physical Downlink Shared Channel (PDSCH) is a target transmission method.

[0064] In one embodiment, the target transmission method satisfies at least one of the following:

[0065] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0066] The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource;

[0067] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0068] The terminal reports frequency domain basis vector parameter information for each CMR;

[0069] Each NZP CSI-RS resource corresponds to a Transmit / Receive Point (TRP);

[0070] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0071] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0072] In one embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0073] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0074] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

[0075] According to a third aspect of the present disclosure, an amplitude coefficient reporting device is provided, applied to a terminal, comprising: a determining module, configured to determine a target amplitude coefficient reporting method in response to supporting at least two amplitude coefficient reporting methods; and a processing module, configured to report the amplitude coefficient to a network device based on the target amplitude coefficient reporting method.

[0076] In one embodiment, a receiving module is configured to receive first indication information sent by a network device, the first indication information being used to indicate a first amplitude coefficient reporting method; and a determining module is configured to determine, based on the first indication information, that the first amplitude coefficient reporting method is the target amplitude coefficient reporting method.

[0077] In one embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0078] In one embodiment, the determining module is used to determine the target amplitude coefficient reporting method and send second indication information to the network device, the second indication information being used to indicate the target amplitude coefficient reporting method.

[0079] In one embodiment, a receiving module is configured to receive third indication information from a network device, the third indication information being used to enable the terminal to report second indication information.

[0080] In one embodiment, the second indication information is carried in channel state information (CSI).

[0081] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0082] In one embodiment, the first information further includes at least one of the following:

[0083] Channel State Information Reference Signal Resource Indicator (CRI);

[0084] Layer rank indication information;

[0085] Non-zero power NZP channel state information reference signal CSI-RS selection information;

[0086] Broadband Channel Quality Information (CQI);

[0087] Number of non-zero bandwidth amplitude coefficients;

[0088] Information indicating the number of non-zero coefficients;

[0089] Non-zero coefficient position indication information;

[0090] Pattern indication information.

[0091] In one embodiment, the second information includes precoded matrix indication PMI information;

[0092] The PMI information includes at least one of the following:

[0093] Spatial basis vector parameter information;

[0094] Frequency domain basis vector parameter information;

[0095] Non-zero coefficient position indication information;

[0096] Phase coefficient information;

[0097] Amplitude coefficient information.

[0098] In one embodiment, the determining module is further configured to determine that the terminal's Physical Downlink Shared Channel (PDSCH) transmission method is the target transmission method.

[0099] In one embodiment, the target transmission method satisfies at least one of the following:

[0100] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0101] The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource;

[0102] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0103] The terminal reports frequency domain basis vector parameter information for each CMR;

[0104] Each NZP CSI-RS resource corresponds to a Transmit / Receive Point (TRP);

[0105] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0106] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0107] In one embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0108] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0109] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

[0110] According to a fourth aspect of the present disclosure, an amplitude coefficient reporting device is provided, applied to a network device, comprising: a receiving module for receiving amplitude coefficients reported by a terminal based on a target amplitude coefficient reporting method.

[0111] In one embodiment, a sending module is used to send first indication information to the terminal, the first indication information being used to indicate a first amplitude coefficient reporting method, the first amplitude coefficient reporting method being the target amplitude coefficient reporting method of the terminal.

[0112] In one embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0113] In one embodiment, a receiving module is configured to receive second indication information sent by the terminal, the second indication information being used to instruct the terminal on a target amplitude coefficient reporting method.

[0114] In one embodiment, a sending module is used to send third indication information to the terminal, the third indication information being used to enable the terminal to report second indication information.

[0115] In one embodiment, the second indication information is carried in channel state information (CSI).

[0116] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0117] In one embodiment, the first information further includes at least one of the following:

[0118] Channel State Information Reference Signal Resource Indicator (CRI);

[0119] Layer rank indication information;

[0120] NZP CSI-RS selection information;

[0121] Broadband Channel Quality Information (CQI);

[0122] Number of non-zero bandwidth amplitude coefficients;

[0123] Information indicating the number of non-zero coefficients;

[0124] Non-zero coefficient position indication information;

[0125] Pattern indication information.

[0126] In one embodiment, the second information includes precoded matrix indication PMI information;

[0127] The PMI information includes at least one of the following:

[0128] Spatial basis vector parameter information;

[0129] Frequency domain basis vector parameter information;

[0130] Non-zero coefficient position indication information;

[0131] Phase coefficient information;

[0132] Amplitude coefficient information.

[0133] In one embodiment, the method by which the terminal receives the physical downlink shared channel is a target transmission method.

[0134] In one embodiment, the target transmission method satisfies at least one of the following:

[0135] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0136] The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource;

[0137] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0138] The terminal reports frequency domain basis vector parameter information for each CMR;

[0139] Each NZP CSI-RS resource corresponds to one TRP;

[0140] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0141] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0142] In one embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0143] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0144] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

[0145] According to a fifth aspect of the present disclosure, an amplitude coefficient reporting device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to: execute the method described in the first aspect and any of its embodiments.

[0146] According to a sixth aspect of the present disclosure, an amplitude coefficient reporting device is provided, comprising: a processor; a memory for storing processor-executable instructions; wherein the processor is configured to execute the method described in the second aspect and any of its embodiments.

[0147] According to a seventh aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed by a processor of a terminal, enable the terminal to perform the methods described in the first aspect and any of its embodiments.

[0148] According to an eighth aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed by a processor of a network device, enable the network device to perform the methods described in the second aspect and any of its embodiments.

[0149] According to a ninth aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the first terminal device is configured to perform the method described in the first aspect and any embodiment thereof; and the second terminal device is configured to perform the method described in the second aspect and any embodiment thereof.

[0150] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: In response to supporting at least two amplitude coefficient reporting methods, the terminal determines the target amplitude coefficient reporting method and reports the amplitude coefficient to the network device based on the target amplitude coefficient reporting method. Thus, the terminal can determine the target amplitude coefficient reporting method actually used when reporting the amplitude coefficient, thereby avoiding amplitude coefficient reporting failure or delays caused by the terminal not knowing which amplitude coefficient reporting method to adopt. It also allows the terminal and network device to reach a consensus on which amplitude coefficient reporting method to use, improving the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting.

[0151] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0152] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0153] Figure 1 This is a schematic diagram of a wireless communication system according to an exemplary embodiment.

[0154] Figure 2 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0155] Figure 3 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0156] Figure 4 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0157] Figure 5 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0158] Figure 6 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0159] Figure 7 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0160] Figure 8 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0161] Figure 9 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment.

[0162] Figure 10 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment.

[0163] Figure 11 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment.

[0164] Figure 12 This is a block diagram illustrating a reporting device for amplitude coefficients according to an exemplary embodiment.

[0165] Figure 13 This is a block diagram illustrating a reporting device for amplitude coefficients according to an exemplary embodiment. Detailed Implementation

[0166] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure.

[0167] The amplitude coefficient reporting method provided in this disclosure can be applied to... Figure 1 The wireless communication system shown. (See attached image) Figure 1 As shown, this wireless communication system includes network equipment and terminals. The terminals connect to the network equipment via wireless resources and transmit data.

[0168] Understandable Figure 1 The wireless communication system shown is for illustrative purposes only. A wireless communication system may also include other network devices, such as core network equipment, wireless relay equipment, and wireless backhaul equipment. Figure 1 Not shown in the diagram. This disclosure does not limit the number of network devices and terminals included in the wireless communication system.

[0169] It is further understood that the wireless communication system of this disclosure is a network providing wireless communication functionality. The wireless communication system can employ different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency-division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and carrier sense multiple access with collision avoidance. Based on factors such as capacity, speed, and latency, networks can be categorized as 2G networks, 3G networks, 4G networks, or future evolution networks, such as 5G networks. 5G networks can also be referred to as New Radio (NR). For ease of description, this disclosure may sometimes simply refer to the wireless communication network as a network.

[0170] Furthermore, the network device involved in this disclosure can also be referred to as a wireless access network device. This wireless access network device can be: a base station, an evolved Node B (eBY), a home base station, an access point (AP) in a Wireless Fidelity (WIFI) system, a wireless relay node, a wireless backhaul node, a transmission point (TP), or a transmission and reception point (TRP), etc. It can also be a gNB in ​​an NR system, or a component or part of a base station. It should be understood that the specific technology and specific device form used in the embodiments of this disclosure are not limited. In this disclosure, the network device can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area (cell). Furthermore, when it is a vehicle-to-everything (V2X) communication system, the network device can also be an in-vehicle device.

[0171] Furthermore, the terminal involved in this disclosure can also be referred to as a terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), etc., which is a device that provides voice and / or data connectivity to a user. For example, the terminal can be a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals include: smartphones, customer premise equipment (CPE), pocket personal computers (PPCs), handheld computers, personal digital assistants (PDAs), laptops, tablets, wearable devices, or in-vehicle devices, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device can also be an in-vehicle device. It should be understood that the embodiments of this disclosure do not limit the specific technology or specific device form adopted by the terminal.

[0172] When a network device (such as a base station) has multiple Transmission Reception Points (TRPs), multiple TRPs (Multi-TRPs) / panels can be used to provide services to terminals.

[0173] In related technologies, there are multiple methods for terminals to report the amplitude coefficient of TRP to network devices. If a terminal has the ability to support multiple reporting schemes, then how the terminal determines the actual amplitude coefficient reporting method to use is a problem that needs to be solved.

[0174] Based on this, embodiments of this disclosure provide a method for reporting amplitude coefficients. When a terminal supports at least two amplitude coefficient reporting methods, a target amplitude coefficient reporting method is determined, and the amplitude coefficient is reported to the network device based on the target amplitude coefficient reporting method. Thus, the terminal can determine the target amplitude coefficient reporting method actually used when reporting amplitude coefficients, thereby avoiding amplitude coefficient reporting failures or delays due to the terminal not knowing which amplitude coefficient reporting method to use. It also allows the terminal and network device to reach a consensus on which amplitude coefficient reporting method to use, improving the transmission performance based on multiple TRPs while reducing the signaling overhead of channel state information (CSI) reporting.

[0175] Figure 2 This is a flowchart illustrating a method for reporting amplitude coefficients according to an exemplary embodiment, such as... Figure 2 As shown, the method for reporting the amplitude coefficient in the terminal includes the following steps.

[0176] In step S11, in response to supporting at least two amplitude coefficient reporting methods, a target amplitude coefficient reporting method is determined.

[0177] In step S12, the amplitude coefficient is reported to the network device based on the target amplitude coefficient reporting method.

[0178] The target amplitude coefficient reporting method can be understood as the amplitude coefficient reporting method actually used by the terminal. The target amplitude coefficient is applicable to all the embodiments below.

[0179] In this embodiment of the disclosure, when the terminal supports at least two amplitude coefficient reporting methods, a target amplitude coefficient reporting method is determined, and the amplitude coefficient is reported to the network device based on the target amplitude coefficient reporting method. Thus, the terminal can determine the target amplitude coefficient reporting method actually used when reporting the amplitude coefficient, thereby avoiding amplitude coefficient reporting failure or delays due to the terminal not knowing which amplitude coefficient reporting method to use. It also allows the terminal and network device to reach a consensus on which amplitude coefficient reporting method to use, improving the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting.

[0180] In this embodiment of the disclosure, there are many methods for the terminal to determine the target amplitude coefficient reporting method, such as determining it through indication information sent by a network device, or determining it itself by the terminal. In this embodiment of the disclosure, the following methods are used... Figures 3-5The various methods shown are explained separately for each of these approaches. It should be noted that, as in the embodiments of this disclosure... Figures 3-5 The multiple solutions shown can be implemented independently, or any one of the embodiments can be implemented in combination with other embodiments.

[0181] In an amplitude coefficient reporting method provided in this embodiment, a target amplitude coefficient reporting method is determined based on first indication information sent by a network device. For example... Figure 3 As shown, Figure 3 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0182] In step S21, a first indication information sent by a network device is received. The first indication information is used to indicate the first amplitude coefficient reporting method.

[0183] In step S22, based on the first indication information, the first amplitude coefficient reporting method is determined to be the target amplitude coefficient reporting method.

[0184] In one exemplary embodiment, the first indication information may be carried by Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, and / or Downlink Control Information (DCI).

[0185] In this embodiment of the disclosure, the network device sends first indication information to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method. Therefore, the terminal can determine the first amplitude coefficient reporting method as the terminal's target amplitude coefficient reporting method based on the first indication information. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, improving the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting.

[0186] In an amplitude coefficient reporting method provided in this embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0187] Among them, at least one CMR contains at least one Non-ZeroPower Channel State Information-Reference Signal (NZP CSI-RS) resource, and each NZP CSI-RS resource corresponds to a different TRP.

[0188] In some embodiments, the reporting method for the first amplitude coefficient corresponding to each CMR in at least one CMR may be the same or different.

[0189] In one exemplary embodiment, if the first indication information does not indicate the CMR corresponding to the first amplitude coefficient reporting method, the first amplitude coefficient reporting method is the same for each of the at least one CMR. That is, the first amplitude coefficient reporting method indicated by the first indication information is applicable to multiple CMRs of the terminal.

[0190] In another exemplary embodiment, if the first indication information indicates one or more CMRs corresponding to the first amplitude coefficient reporting method, different CMRs among at least one CMR of the terminal can be configured with different first amplitude coefficient reporting methods. That is, the first indication information can independently configure the first amplitude coefficient reporting method for different CMRs, and the first amplitude coefficient reporting methods corresponding to different CMRs can be the same or different.

[0191] For example, network devices can determine the first amplitude coefficient reporting method corresponding to the CMR based on the location of the TRP corresponding to the NZP CSI-RS resource contained in the CMR.

[0192] More specifically, if the TRPs corresponding to the NZP CSI-RS resources included in the CMR are close in location, then the first amplitude coefficient reporting method is amplitude coefficient reporting method 1; if the TRPs corresponding to the NZP CSI-RS resources included in the CMR are far apart, then the first amplitude coefficient reporting method can be amplitude coefficient reporting method 2, which is different from amplitude coefficient reporting method 1.

[0193] For example, network devices can determine the first amplitude coefficient reporting method corresponding to the CMR based on the transmission power of the TRP corresponding to the NZP CSI-RS resource contained in the CMR.

[0194] More specifically, if the transmission power of the TRPs corresponding to the NZP CSI-RS resources included in the CMR is close to or the same, then the first amplitude coefficient reporting method is amplitude coefficient reporting method 1; if the transmission power of the TRPs corresponding to the NZP CSI-RS resources included in the CMR differs greatly, then the first amplitude coefficient reporting method can be amplitude coefficient reporting method 2, which is different from amplitude coefficient reporting method 1.

[0195] In the embodiments of this disclosure, the reporting method of the first amplitude coefficient corresponding to each CMR in at least one CMR can be the same or different, thereby improving the transmission performance based on multiple TRP.

[0196] In an amplitude coefficient reporting method provided in this embodiment, the terminal determines the target amplitude coefficient reporting method and informs the network device of the target amplitude coefficient reporting method, such as... Figure 4 As shown, Figure 4 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0197] In step S31, the method for reporting the target amplitude coefficient is determined.

[0198] In some embodiments, the terminal may determine the signal based on at least one of the following: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and Signal to Interference and Noise Ratio (SINR) corresponding to different NZP CSI-RS.

[0199] In one exemplary embodiment, if the RSRP difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The RSRP may include at least one of Layer 1 (L1)-RSRP and L3-RSRP.

[0200] In another exemplary embodiment, if the RSRQ difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The RSRQ may include at least one of L1-RSRQ and L3-RSRQ.

[0201] In another exemplary embodiment, if the SINR difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The SINR may include at least one of L1-SINR and L3-SINR.

[0202] In step S32, a second indication message is sent to the network device. The second indication message is used to indicate the target amplitude coefficient reporting method.

[0203] In this embodiment of the disclosure, the terminal determines the target amplitude coefficient reporting method itself and sends a second indication information to the network device. The second indication information is used to indicate the target amplitude coefficient reporting method. Therefore, the network device can determine the amplitude coefficient reporting method actually used by the terminal based on the second indication information. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, thereby improving the transmission performance based on multiple TRPs and reducing the signaling overhead of CSI reporting.

[0204] In an amplitude coefficient reporting method provided in this embodiment, the terminal needs to determine whether it can report the second indication information before sending the second indication information. For example... Figure 5 As shown, Figure 5 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0205] In step S41, the third indication information of the network device is received, which is used to enable the terminal to report the second indication information.

[0206] In some embodiments, the second indication information is used by the terminal to inform the network device of the amplitude coefficient reporting method it actually uses.

[0207] In this embodiment of the disclosure, the terminal receives third indication information from the network device. Since the third indication information is used to enable the terminal to report second indication information, when the second indication information is used to indicate the target amplitude coefficient reporting method, the network device can determine the amplitude coefficient reporting method actually used by the terminal as the target transmission method based on the second indication information. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, thereby improving the transmission performance based on multiple TRPs and reducing the signaling overhead of CSI reporting.

[0208] In some embodiments of an amplitude coefficient reporting method provided in this disclosure, the second indication information is carried in CSI.

[0209] This embodiment of the present disclosure carries the second indication information in the CSI, so that the second indication information can be reported simultaneously when the CSI is reported, thereby reducing signaling consumption.

[0210] In an amplitude coefficient reporting method provided in this embodiment, CSI includes: first information and second information.

[0211] The first information corresponds to an indication field of fixed size, and the second information corresponds to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0212] In one exemplary embodiment, CSI may include two parts, namely part 1 and part 2. Part 1 may correspond to first information, and part 2 may correspond to second information.

[0213] In another exemplary embodiment, the size of the indication field corresponding to the first information can be a fixed value. For example, it can be preset or be the default size specified by the protocol.

[0214] In another exemplary embodiment, the size of CSI part 2 is determined based on the information in part 1. Here, the size of part 2 represents the number of bits occupied by CSI part 2, such as 8 bits or 16 bits.

[0215] For example, the size of CSI part 2 is determined based on the second indication information in part 1. If the second indication information in part 1 indicates that the terminal actually uses the first amplitude coefficient reporting method, then the size of part 2 will be smaller. Conversely, if the second indication information in part 1 indicates that the terminal actually uses the second amplitude coefficient reporting method, then the size of part 2 will be larger.

[0216] In another exemplary embodiment, the second indication information is carried within the first information. The amplitude coefficient reporting method indication field in the first information indicates the amplitude coefficient reporting method actually used by the terminal.

[0217] For example, when the bit indicated by the amplitude coefficient reporting method indication field in the first information is 0, the second indication information indicates that the amplitude coefficient reporting method actually used by the terminal is the first amplitude coefficient reporting method. When the bit indicated by the amplitude coefficient reporting method indication field in the first information is 1, the second indication information indicates that the amplitude coefficient reporting method actually used by the terminal is the second amplitude coefficient reporting method.

[0218] In this embodiment of the disclosure, by dynamically adjusting the size of different parts of CSI, when the amplitude coefficient reporting method actually used by the terminal indicated by the second indication information is the first amplitude coefficient reporting method, since the first amplitude coefficient reporting method divides at least one NZP CSI-RS into two groups, the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.

[0219] In an amplitude coefficient reporting method provided in this embodiment, the first information further includes at least one of the following: channel state information reference signal resource indicator (CRI); layer rank indicator information; NZP CSI-RS selection information; wideband channel quality indicator (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient count indicator information; non-zero coefficient position indicator information; and mode indicator information.

[0220] In one exemplary embodiment, the first information includes the number of non-zero broadband amplitude coefficients.

[0221] It can be understood that the number of non-zero broadband amplitude coefficients represents the number of broadband amplitude coefficients with non-zero values.

[0222] In one exemplary embodiment, the first information includes an indication of the number of non-zero coefficients.

[0223] It is understandable that the number of non-zero coefficients indicates the number of coefficients with non-zero coherence coefficients.

[0224] In one exemplary embodiment, the first information includes non-zero coefficient position indication information.

[0225] It is understandable that the non-zero coefficient position indication information can indicate the position of coefficients with non-zero coherence coefficients.

[0226] In one exemplary embodiment, the first information includes a mode indication.

[0227] For example, the mode indicator can be used to indicate CSI feedback mode, codebook mode, etc. CSI feedback mode can include mode 1 and mode 2, where mode 1 is feedback based on a single TRP, and mode 2 is feedback based on multiple TRPs. Of course, CSI feedback mode can also include other modes, and this disclosure does not impose any limitations. Codebook mode can include codebook structure 1 and codebook structure 2, where codebook structure 1 feeds back a frequency domain basis (FD) basis information for all NZP CSI-RS; codebook structure 2 feeds back a frequency domain basis vector information for each NZP CSI-RS. Codebook mode can also include other modes, and this disclosure does not impose any limitations.

[0228] In an amplitude coefficient reporting method provided in this embodiment, the second information includes precoding matrix indicator (PMI) information.

[0229] The PMI information includes at least one of the following: spatial basis vector parameter information; frequency basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.

[0230] In the amplitude coefficient reporting method provided in this embodiment, the terminal only needs to determine the target amplitude coefficient reporting method when the method of receiving the physical downlink shared channel is the target transmission method. Therefore, the terminal needs to determine the transmission method of the physical downlink shared channel as the target transmission method.

[0231] In the embodiments of this disclosure, the target transmission method can be referred to as the Coherent Joint Transmission (CJT) method. Except for the embodiments of this disclosure, the target transmission method appearing in all the following embodiments can be referred to as the CJT method.

[0232] In this embodiment of the disclosure, by determining the method by which the terminal receives the physical downlink shared channel as the target transmission method, it is determined which amplitude coefficient reporting method the terminal needs to select for amplitude coefficient reporting.

[0233] In the amplitude coefficient reporting method provided in this embodiment, the target transmission method satisfies at least one of the following:

[0234] A. Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0235] B. The terminal reports the spatial basis vector parameter information for each NZP CSI-RS resource;

[0236] C. The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0237] D. The terminal reports frequency domain basis vector parameter information for each CMR;

[0238] E. Each NZP CSI-RS resource corresponds to one TRP;

[0239] The number of TCI states corresponding to F.PDSCH transmission is at least 1.

[0240] The target transmission method can satisfy any one, two, or three features of the above-mentioned AF, and the combination of AF is not limited in the embodiments of this disclosure.

[0241] In one exemplary embodiment, the target transmission method satisfies the requirement that the terminal reports spatial basis vector parameter information for each NZP CSI-RS resource.

[0242] For example, a specified number (L) of beams are selected from the total number of antenna ports N1*N2 of each NZP CSI-RS resource to report spatial domain basis vectors. Here, N1 is the number of antenna ports in the first dimension, and N2 is the number of antenna ports in the second dimension. The value of L can be the same or different for different NZP CSI-RS resources.

[0243] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource.

[0244] For example, M frequency domain basis vectors are selected from N3 frequency domain basis vectors for each NZP CSI-RS resource. Here, N3 represents the product of the number of Channel Quality Indication subbands (CQI-subbands) and the number of Precoding Matrix Index subbands (PMI-subbands) contained in each CQI-subband. The value of M can be the same or different for different NZP CSI-RS resources.

[0245] In one exemplary embodiment, the target transmission method satisfies the requirement that the terminal reports frequency domain basis vector parameter information for each CMR.

[0246] For example, for a CMR, even if the CMR contains multiple NZP CSI-RS resources, the terminal only needs to select M identical frequency domain basis vectors from N3 frequency domain basis vectors for all NZP CSI-RS resources in the CMR. It is not necessary to select M frequency domain basis vectors for each NZP CSI-RS resource separately.

[0247] In this embodiment of the disclosure, it can be determined whether the current transmission method belongs to the target transmission method by judging whether the current transmission method meets the characteristics of the target transmission method, and further determine whether the terminal needs to determine the actual amplitude coefficient reporting method.

[0248] In an amplitude coefficient reporting method provided in this embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0249] In one exemplary embodiment, when a terminal supports the target transmission method, the amplitude coefficient transmission method it must support is amplitude coefficient reporting method 1, and the amplitude coefficient reporting method the terminal can optionally support is amplitude coefficient reporting method 2. The terminal needs to report capability information to the network device, informing the network device that it supports amplitude coefficient reporting method 2. Therefore, the target amplitude coefficient reporting method actually used by the terminal can be either amplitude coefficient reporting method 1 or amplitude coefficient reporting method 2.

[0250] In another exemplary embodiment, when the terminal supports the target transmission method, the amplitude coefficient transmission method that it must support is amplitude coefficient reporting method 2, and the amplitude coefficient reporting method that the terminal can optionally support is amplitude coefficient reporting method 1. The terminal needs to report capability information to the network device, informing the network device that it supports amplitude coefficient reporting method 1 through the capability information. Therefore, the target amplitude coefficient reporting method actually used by the terminal can be amplitude coefficient reporting method 1 or amplitude coefficient reporting method 2.

[0251] In a method for reporting amplitude coefficients provided in this embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0252] A. Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, and the first polarization direction corresponds to the polarization direction where the strongest amplitude coefficient is located.

[0253] B. Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZPCSI-RS corresponds to 2 sets of amplitude coefficients, and the 2 sets of amplitude coefficients correspond to different polarization directions, where N is a positive integer.

[0254] In one exemplary embodiment, the method for reporting the target amplitude coefficient includes method A. In this case, the strongest amplitude coefficient in the polarization direction of the strongest coefficient indicator (SCI) is defaulted to 1, and the terminal does not need to report it. It only needs to report the amplitude coefficients at other positions in the same polarization direction, where the amplitude coefficients at other positions are the difference from 1. The terminal independently reports the reference amplitude in another polarization direction and reports the amplitude coefficients at other positions in the same polarization direction, where the amplitude coefficients at other positions are the difference from the reference amplitude in the same polarization direction.

[0255] In another exemplary embodiment, the method for reporting the target amplitude coefficient includes method B. In this case, the strongest amplitude coefficient within the group containing the SCI is defaulted to 1, and the terminal does not need to report it. The terminal only needs to report the amplitude coefficients at other positions within the group, where the amplitude coefficients at other positions are the differences from 1. For the other 2N-1 groups, the terminal reports one reference amplitude for each group and reports the amplitude coefficients at other positions within that group, where the amplitude coefficients at other positions are the differences from the reference amplitude in that polarization direction. Compared to method A, method B requires reporting an additional 2N-2 reference amplitudes. Therefore, when N is greater than 1, the signaling overhead of method B is relatively larger, meaning that the size of the second CSI information corresponding to method B is larger.

[0256] In this embodiment of the disclosure, when the target amplitude coefficient reporting method is method A, since the terminal only needs to report two sets of amplitude coefficients, the CSI signaling consumption can be reduced when the terminal reports the target amplitude coefficient through CSI.

[0257] Based on the same concept, this disclosure also provides a method for reporting amplitude coefficients applied to network devices.

[0258] Figure 6 This is a flowchart illustrating a method for reporting amplitude coefficients according to an exemplary embodiment, such as... Figure 6 As shown, the method for reporting amplitude coefficients in network devices includes the following steps.

[0259] In step S51, the receiving terminal reports the amplitude coefficient based on the target amplitude coefficient reporting method.

[0260] The target amplitude coefficient reporting method can be understood as the amplitude coefficient reporting method actually used by the terminal. The target amplitude coefficient is applicable to all the embodiments below.

[0261] In this embodiment of the disclosure, the terminal can report the amplitude coefficient based on the target amplitude coefficient reporting method, thereby avoiding the terminal not knowing which amplitude coefficient reporting method to use, which would lead to amplitude coefficient reporting failure or untimely reporting. At the same time, it allows the terminal and network device to reach a consensus on which amplitude coefficient reporting method to use, thereby improving the transmission performance based on multiple TRPs and reducing the signaling overhead of CSI reporting.

[0262] In this embodiment of the disclosure, there are many methods for the terminal to determine the target amplitude coefficient reporting method, such as determining it through indication information sent by a network device, or determining it itself by the terminal. In this embodiment of the disclosure, the following methods are used... Figures 7-9 The various methods shown are explained separately for each of these approaches. It should be noted that, as in the embodiments of this disclosure... Figures 7-9 The multiple solutions shown can be implemented independently, or any one of the embodiments can be implemented in combination with other embodiments.

[0263] In a method for reporting amplitude coefficients provided in this embodiment, a target amplitude coefficient reporting method is determined based on first indication information sent by a network device. For example... Figure 7 As shown, Figure 7 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0264] In step S61, a first indication information is sent to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method, which is the terminal's target amplitude coefficient reporting method.

[0265] In one exemplary embodiment, the first indication information may be carried via RRC signaling, MAC CE signaling, and / or DCI.

[0266] In this embodiment of the disclosure, the network device sends first indication information to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method. Therefore, the terminal can determine the first amplitude coefficient reporting method as the terminal's target amplitude coefficient reporting method based on the first indication information. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, improving the transmission performance based on multiple TRPs while reducing the signaling overhead of CSI reporting.

[0267] In an amplitude coefficient reporting method provided in this embodiment, the first indication information is further used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

[0268] Among them, at least one CMR contains at least one non-zero power NZP channel state information reference signal CSI-RS resource, and each NZP CSI-RS resource corresponds to a different TRP.

[0269] In some embodiments, the reporting method for the first amplitude coefficient corresponding to each CMR in at least one CMR may be the same or different.

[0270] In one exemplary embodiment, if the first indication information does not indicate the CMR corresponding to the first amplitude coefficient reporting method, the first amplitude coefficient reporting method is the same for each of the at least one CMR. That is, the first amplitude coefficient reporting method indicated by the first indication information is applicable to multiple CMRs of the terminal.

[0271] In another exemplary embodiment, if the first indication information indicates one or more CMRs corresponding to the first amplitude coefficient reporting method, different CMRs among at least one CMR of the terminal can be configured with different first amplitude coefficient reporting methods. That is, the first indication information can independently configure the first amplitude coefficient reporting method for different CMRs, and the first amplitude coefficient reporting methods corresponding to different CMRs can be the same or different.

[0272] For example, network devices can determine the first amplitude coefficient reporting method corresponding to the CMR based on the location of the TRP corresponding to the NZP CSI-RS resource contained in the CMR.

[0273] More specifically, if the TRPs corresponding to the NZP CSI-RS resources included in the CMR are close in location, then the first amplitude coefficient reporting method is amplitude coefficient reporting method 1; if the TRPs corresponding to the NZP CSI-RS resources included in the CMR are far apart, then the first amplitude coefficient reporting method can be amplitude coefficient reporting method 2, which is different from amplitude coefficient reporting method 1.

[0274] For example, network devices can determine the first amplitude coefficient reporting method corresponding to the CMR based on the transmission power of the TRP corresponding to the NZP CSI-RS resource contained in the CMR.

[0275] More specifically, if the transmission power of the TRPs corresponding to the NZP CSI-RS resources included in the CMR is close to or the same, then the first amplitude coefficient reporting method is amplitude coefficient reporting method 1; if the transmission power of the TRPs corresponding to the NZP CSI-RS resources included in the CMR differs greatly, then the first amplitude coefficient reporting method can be amplitude coefficient reporting method 2, which is different from amplitude coefficient reporting method 1.

[0276] In the embodiments of this disclosure, the reporting method of the first amplitude coefficient corresponding to each CMR in at least one CMR can be the same or different, thereby improving the transmission performance based on multiple TRP.

[0277] In an amplitude coefficient reporting method provided in this embodiment, the terminal determines the target amplitude coefficient reporting method and informs the network device of the target amplitude coefficient reporting method, such as... Figure 8 As shown, Figure 8 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0278] In step S71, the receiving terminal sends a second indication information, which is used to indicate the terminal's target amplitude coefficient reporting method.

[0279] In this embodiment of the disclosure, the terminal determines the target amplitude coefficient reporting method itself and sends a second indication information to the network device. The second indication information is used to indicate the target amplitude coefficient reporting method. Therefore, the network device can determine the amplitude coefficient reporting method actually used by the terminal based on the second indication information. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, thereby improving the transmission performance based on multiple TRPs and reducing the signaling overhead of CSI reporting.

[0280] In this embodiment of the disclosure, the terminal can be determined based on at least one of RSRP, RSRQ and SINR corresponding to different NZP CSI-RS.

[0281] In one exemplary embodiment, if the RSRP difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The RSRP may include at least one of Layer 1 (L1)-RSRP and L3-RSRP.

[0282] In another exemplary embodiment, if the RSRQ difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The RSRQ may include at least one of L1-RSRQ and L3-RSRQ.

[0283] In another exemplary embodiment, if the SINR difference between different NZP CSI-RS is small, then the target amplitude coefficient reporting method is determined to be Method 1; otherwise, the target amplitude coefficient reporting method is determined to be Method 2. The SINR may include at least one of L1-SINR and L3-SINR.

[0284] In an amplitude coefficient reporting method provided in this embodiment, the network device needs to enable the terminal to report the second indication information before receiving the second indication information. For example... Figure 9 As shown, Figure 9 This is a flowchart illustrating an amplitude coefficient reporting method according to an exemplary embodiment, including the following steps:

[0285] In step S81, a third indication message is sent to the terminal, which enables the terminal to report the second indication message.

[0286] In some embodiments, the second indication information is used by the terminal to inform the network device of the amplitude coefficient reporting method it actually uses.

[0287] In this embodiment of the disclosure, the network device sends a third indication information to the terminal. Since the third indication information is used to enable the terminal to report the second indication information, when the second indication information is used to indicate the target amplitude coefficient reporting method, the network device can determine the amplitude coefficient reporting method actually used by the terminal as the target transmission method based on the second indication information sent by the terminal. Thus, the network device and the terminal can maintain consistency in the amplitude coefficient reporting method actually used by the terminal, thereby improving the transmission performance based on multiple TRPs and reducing the signaling overhead of CSI reporting.

[0288] In some embodiments of an amplitude coefficient reporting method provided in this disclosure, the second indication information is carried in CSI.

[0289] This embodiment of the present disclosure carries the second indication information in the CSI, so that the second indication information can be reported simultaneously when the CSI is reported, thereby reducing signaling consumption.

[0290] In an amplitude coefficient reporting method provided in this embodiment, CSI includes: first information and second information.

[0291] The first information corresponds to an indication field of fixed size, and the second information corresponds to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0292] In one exemplary embodiment, CSI may include two parts, namely part 1 and part 2. Part 1 may correspond to first information, and part 2 may correspond to second information.

[0293] In another exemplary embodiment, the size of the indication field corresponding to the first information can be a fixed value. For example, it can be preset or be the default size specified by the protocol.

[0294] In another exemplary embodiment, the size of CSI part 2 is determined based on the information in part 1. Here, the size of part 2 represents the number of bits occupied by CSI part 2, such as 8 bits or 16 bits.

[0295] For example, the size of CSI part 2 is determined based on the second indication information in part 1. If the second indication information in part 1 indicates that the terminal actually uses the first amplitude coefficient reporting method, then the size of part 2 will be smaller. Conversely, if the second indication information in part 1 indicates that the terminal actually uses the second amplitude coefficient reporting method, then the size of part 2 will be larger.

[0296] In another exemplary embodiment, the second indication information is carried within the first information. The amplitude coefficient reporting method indication field in the first information indicates the amplitude coefficient reporting method actually used by the terminal.

[0297] For example, when the bit indicated by the amplitude coefficient reporting method indication field in the first information is 0, the second indication information indicates that the amplitude coefficient reporting method actually used by the terminal is the first amplitude coefficient reporting method. When the bit indicated by the amplitude coefficient reporting method indication field in the first information is 1, the second indication information indicates that the amplitude coefficient reporting method actually used by the terminal is the second amplitude coefficient reporting method.

[0298] In this embodiment of the disclosure, by dynamically adjusting the size of different parts of CSI, when the amplitude coefficient reporting method actually used by the terminal indicated by the second indication information is the first amplitude coefficient reporting method, since the first amplitude coefficient reporting method divides at least one NZP CSI-RS into two groups, the signaling overhead of CSI reporting can be reduced when the terminal communicates with multiple TRPs.

[0299] In an amplitude coefficient reporting method provided in this embodiment, the first information further includes at least one of the following: channel state information reference signal resource indicator (CRI); layer rank indicator information; NZP CSI-RS selection information; wideband channel quality indicator (CQI); number of non-zero wideband amplitude coefficients; non-zero coefficient count indicator information; non-zero coefficient position indicator information; and mode indicator information.

[0300] In one exemplary embodiment, the first information includes the number of non-zero broadband amplitude coefficients.

[0301] It can be understood that the number of non-zero broadband amplitude coefficients represents the number of broadband amplitude coefficients with non-zero values.

[0302] In one exemplary embodiment, the first information includes an indication of the number of non-zero coefficients.

[0303] It is understandable that the number of non-zero coefficients indicates the number of coefficients with non-zero coherence coefficients.

[0304] In one exemplary embodiment, the first information includes non-zero coefficient position indication information.

[0305] It is understandable that the non-zero coefficient position indication information can indicate the position of coefficients with non-zero coherence coefficients.

[0306] In one exemplary embodiment, the first information includes a mode indication.

[0307] For example, the mode indicator can be used to indicate CSI feedback mode, codebook mode, etc. CSI feedback mode can include mode 1 and mode 2, where mode 1 is feedback based on a single TRP, and mode 2 is feedback based on multiple TRPs. Of course, CSI feedback mode can also include other modes, and this disclosure does not impose any limitations. Codebook mode can include codebook structure 1 and codebook structure 2, where codebook structure 1 feeds back a frequency domain basis (FD) basis information for all NZP CSI-RS; codebook structure 2 feeds back a frequency domain basis vector information for each NZP CSI-RS. Codebook mode can also include other modes, and this disclosure does not impose any limitations.

[0308] In an amplitude coefficient reporting method provided in this embodiment, the second information includes precoding matrix indicator (PMI) information.

[0309] The PMI information includes at least one of the following: spatial basis vector parameter information; frequency basis vector parameter information; non-zero coefficient position indication information; phase coefficient information; amplitude coefficient information.

[0310] In the amplitude coefficient reporting method provided in this embodiment, the terminal only needs to determine the target amplitude coefficient reporting method when the terminal receives the physical downlink shared channel as the target transmission method. Therefore, the network device needs to determine the terminal's method of receiving the physical downlink shared channel as the target transmission method.

[0311] In the embodiments of this disclosure, the target transmission method can be referred to as the Coherent Joint Transmission (CJT) method. Except for the embodiments of this disclosure, the target transmission method appearing in all the following embodiments can be referred to as the CJT method.

[0312] In the amplitude coefficient reporting method provided in this embodiment, the target transmission method satisfies at least one of the following:

[0313] A. Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0314] B. The terminal reports the spatial basis vector parameter information for each NZP CSI-RS resource;

[0315] C. The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0316] D. The terminal reports frequency domain basis vector parameter information for each CMR;

[0317] E. Each NZP CSI-RS resource corresponds to one TRP;

[0318] The number of TCI states corresponding to F.PDSCH transmission is at least 1.

[0319] The target transmission method can satisfy any one, two, or three features of the above-mentioned AF, and the combination of AF is not limited in the embodiments of this disclosure.

[0320] In one exemplary embodiment, the target transmission method satisfies the requirement that the terminal reports spatial basis vector parameter information for each NZP CSI-RS resource.

[0321] For example, a specified number (L) of beams are selected from the total number of antenna ports N1*N2 of each NZP CSI-RS resource to report spatial domain basis vectors. Here, N1 is the number of antenna ports in the first dimension, and N2 is the number of antenna ports in the second dimension. The value of L can be the same or different for different NZP CSI-RS resources.

[0322] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource.

[0323] For example, M frequency domain basis vectors are selected from N3 frequency domain basis vectors for each NZP CSI-RS resource. Here, N3 represents the product of the number of Channel Quality Indication subbands (CQI-subbands) and the number of Precoding Matrix Index subbands (PMI-subbands) contained in each CQI-subband. The value of M can be the same or different for different NZP CSI-RS resources.

[0324] In one exemplary embodiment, the target transmission method satisfies the requirement that the terminal reports frequency domain basis vector parameter information for each CMR.

[0325] For example, for a CMR, even if the CMR contains multiple NZP CSI-RS resources, the terminal only needs to select M identical frequency domain basis vectors from N3 frequency domain basis vectors for all NZP CSI-RS resources in the CMR. It is not necessary to select M frequency domain basis vectors for each NZP CSI-RS resource separately.

[0326] In this embodiment of the disclosure, it can be determined whether the current transmission method belongs to the target transmission method by judging whether the current transmission method meets the characteristics of the target transmission method, and further determine whether the terminal needs to determine the actual amplitude coefficient reporting method.

[0327] In an amplitude coefficient reporting method provided in this embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0328] In one exemplary embodiment, when a terminal supports the target transmission method, the amplitude coefficient transmission method it must support is amplitude coefficient reporting method 1, and the amplitude coefficient reporting method the terminal can optionally support is amplitude coefficient reporting method 2. The terminal needs to report capability information to the network device, informing the network device that it supports amplitude coefficient reporting method 2. Therefore, the target amplitude coefficient reporting method actually used by the terminal can be either amplitude coefficient reporting method 1 or amplitude coefficient reporting method 2.

[0329] In another exemplary embodiment, when the terminal supports the target transmission method, the amplitude coefficient transmission method that it must support is amplitude coefficient reporting method 2, and the amplitude coefficient reporting method that the terminal can optionally support is amplitude coefficient reporting method 1. The terminal needs to report capability information to the network device, informing the network device that it supports amplitude coefficient reporting method 1 through the capability information. Therefore, the target amplitude coefficient reporting method actually used by the terminal can be amplitude coefficient reporting method 1 or amplitude coefficient reporting method 2. In an amplitude coefficient reporting method provided in this embodiment, the target amplitude coefficient reporting method includes at least one of the following:

[0330] A. Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, and the first polarization direction corresponds to the polarization direction where the strongest amplitude coefficient is located.

[0331] B. Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZPCSI-RS corresponds to 2 sets of amplitude coefficients, and the 2 sets of amplitude coefficients correspond to different polarization directions, where N is a positive integer.

[0332] In one exemplary embodiment, the response to reporting the target amplitude coefficient includes method A. In this case, the strongest amplitude coefficient in the polarization direction of the strongest coefficient indicator (SCI) is 1 by default, and the terminal does not need to report it. It only needs to report the amplitude coefficients at other positions in the same polarization direction, where the amplitude coefficients at other positions are the difference from 1. The terminal independently reports the reference amplitude in another polarization direction and reports the amplitude coefficients at other positions in the same polarization direction, where the amplitude coefficients at other positions are the difference from the reference amplitude in the same polarization direction.

[0333] In another exemplary embodiment, the response to reporting the target amplitude coefficient includes method B. In this case, the strongest amplitude coefficient in the group where SCI is located is 1 by default, and the terminal does not need to report it. The terminal only needs to report the amplitude coefficients at other positions in the group, which are the differences from 1. For the other 2N-1 groups, the terminal reports a reference amplitude for each group and reports the amplitude coefficients at other positions in the group, which are the differences from the reference amplitude in the polarization direction.

[0334] In this embodiment of the disclosure, compared with method A, method B requires an additional 2N-2 reference amplitudes to be reported. Therefore, when N is greater than 1, the signaling overhead of method B is relatively large, that is, the size of the second CSI information corresponding to method B is larger.

[0335] In this embodiment of the disclosure, when the target amplitude coefficient reporting method is method A, since the terminal only needs to report two sets of amplitude coefficients, the CSI signaling consumption can be reduced when the terminal reports the target amplitude coefficient through CSI.

[0336] It should be noted that those skilled in the art will understand that the various implementation methods / embodiments described above in this disclosure can be used in conjunction with the foregoing embodiments, or they can be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principle is similar. In this disclosure, some embodiments are described as implementations used together. Of course, those skilled in the art will understand that such illustrative examples are not intended to limit the embodiments of this disclosure.

[0337] Based on the same concept, embodiments of this disclosure also provide an amplitude coefficient reporting device.

[0338] It is understood that the amplitude coefficient reporting device provided in this disclosure includes hardware structures and / or software modules corresponding to each function in order to achieve the above-mentioned functions. In conjunction with the units and algorithm steps of the various examples disclosed in this disclosure, this disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solution of this disclosure.

[0339] Figure 10 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment. (Refer to...) Figure 10 The device includes a determination module 101 and a processing module 102. The amplitude coefficient reporting device 100 is used in the terminal.

[0340] The determination module 101 is used to determine the target amplitude coefficient reporting method in response to supporting at least two amplitude coefficient reporting methods; the processing module is used to report the amplitude coefficient to the network device based on the target amplitude coefficient reporting method.

[0341] In one embodiment, the amplitude coefficient reporting device 100 further includes a receiving module 103. The receiving module 103 is configured to receive first indication information sent by the network device, the first indication information being used to indicate a first amplitude coefficient reporting method;

[0342] The determination module 101 is used to determine, based on the first indication information, the first amplitude coefficient reporting method as the target amplitude coefficient reporting method.

[0343] In one embodiment, the first indication information is further used to indicate at least one CMR corresponding to the first amplitude coefficient reporting method.

[0344] In one embodiment, the determining module 101 is used to determine the target amplitude coefficient reporting method and send second indication information to the network device. The second indication information is used to indicate the target amplitude coefficient reporting method.

[0345] In one embodiment, the receiving module 103 is used to receive third indication information from the network device, the third indication information being used to enable the terminal to report second indication information.

[0346] In one implementation, the second indication information is carried in the channel state information (CSI).

[0347] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0348] In one implementation, the first information further includes at least one of the following:

[0349] Channel State Information Reference Signal Resource Indicator (CRI);

[0350] Layer rank indication information;

[0351] NZP CSI-RS selection information;

[0352] Broadband Channel Quality Information (CQI);

[0353] Number of non-zero bandwidth amplitude coefficients;

[0354] Information indicating the number of non-zero coefficients;

[0355] Non-zero coefficient position indication information;

[0356] Pattern indication information.

[0357] In one implementation, the second information includes a precoded matrix indicating PMI information;

[0358] PMI information should include at least one of the following:

[0359] Spatial basis vector parameter information;

[0360] Frequency domain basis vector parameter information;

[0361] Non-zero coefficient position indication information;

[0362] Phase coefficient information;

[0363] Amplitude coefficient information.

[0364] In one embodiment, the determining module 101 is further configured to determine the terminal’s transmission method for the Physical Downlink Shared Channel (PDSCH) as the target transmission method.

[0365] In one implementation, the target transmission method satisfies at least one of the following:

[0366] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0367] The terminal reports the spatial basis vector parameter information for each NZP CSI-RS resource.

[0368] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0369] The terminal reports frequency domain basis vector parameter information for each CMR separately;

[0370] Each NZP CSI-RS resource corresponds to one TRP;

[0371] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0372] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0373] In one implementation, the target amplitude coefficient reporting method includes at least one of the following:

[0374] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0375] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

[0376] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0377] Figure 11 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment. (Refer to...) Figure 11 The device includes a receiving module 201. The amplitude coefficient reporting device 200 is used in network equipment.

[0378] The receiving module 201 is used to receive the amplitude coefficient reported by the terminal based on the target amplitude coefficient reporting method.

[0379] In one embodiment, the amplitude coefficient reporting device 200 further includes a sending module 202, which is used to send first indication information to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method, which is the terminal's target amplitude coefficient reporting method.

[0380] In one embodiment, the first indication information is further used to indicate at least one CMR corresponding to the first amplitude coefficient reporting method.

[0381] In one embodiment, the receiving module 201 is used to receive second indication information sent by the terminal, the second indication information being used to instruct the terminal on the target amplitude coefficient reporting method.

[0382] In one embodiment, the sending module 202 is used to send third indication information to the terminal, the third indication information being used to enable the terminal to report second indication information.

[0383] In one implementation, the second indication information is carried in the channel state information (CSI).

[0384] In one embodiment, CSI includes: first information and second information, the first information corresponding to an indication field of fixed size, and the second information corresponding to an indication field whose size is determined based on the first information; the second indication information is carried in the first information.

[0385] In one implementation, the first information further includes at least one of the following:

[0386] Channel State Information Reference Signal Resource Indicator (CRI);

[0387] Layer rank indication information;

[0388] NZP CSI-RS selection information;

[0389] Broadband Channel Quality Information (CQI);

[0390] Number of non-zero bandwidth amplitude coefficients;

[0391] Information indicating the number of non-zero coefficients;

[0392] Non-zero coefficient position indication information;

[0393] Pattern indication information.

[0394] In one implementation, the second information includes a precoded matrix indicating PMI information;

[0395] The PMI information includes at least one of the following:

[0396] Spatial basis vector parameter information;

[0397] Frequency domain basis vector parameter information;

[0398] Non-zero coefficient position indication information;

[0399] Phase coefficient information;

[0400] Amplitude coefficient information.

[0401] In one implementation, the method by which the terminal receives the physical downlink shared channel is a target transmission method.

[0402] In one implementation, the target transmission method satisfies at least one of the following:

[0403] Each of the at least one CMR includes at least one NZP CSI-RS resource;

[0404] The terminal reports the spatial basis vector parameter information for each NZP CSI-RS resource.

[0405] The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource;

[0406] The terminal reports frequency domain basis vector parameter information for each CMR separately;

[0407] Each NZP CSI-RS resource corresponds to one TRP;

[0408] The number of TCI states corresponding to the PDSCH transmission is at least 1.

[0409] In one embodiment, the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or the target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

[0410] In one implementation, the target amplitude coefficient reporting method includes at least one of the following:

[0411] Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located.

[0412] Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, and the 2 sets of amplitude coefficients correspond to different polarization directions, where N is a positive integer.

[0413] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0414] Figure 12 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment. For example, device 300 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0415] Reference Figure 12The device 300 may include one or more of the following components: processing component 302, memory 304, power component 306, multimedia component 308, audio component 310, input / output (I / O) interface 312, sensor component 314, and communication component 316.

[0416] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0417] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0418] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0419] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0420] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0421] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0422] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0423] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0424] In an exemplary embodiment, the apparatus 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0425] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0426] Figure 13 This is a block diagram illustrating an amplitude coefficient reporting device according to an exemplary embodiment. For example, device 400 may be provided as a network device. (Refer to...) Figure 13 The apparatus 400 includes a processing component 422, which further includes one or more processors, and memory resources represented by memory 432 for storing instructions, such as application programs, that can be executed by the processing component 422. The application programs stored in memory 432 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 422 is configured to execute instructions to perform the methods described above.

[0427] Device 400 may also include a power supply component 426 configured to perform power management of device 400, a wired or wireless network interface 450 configured to connect device 400 to a network, and an input / output (I / O) interface 458. Device 400 may operate on an operating system stored in memory 432, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0428] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 432 including instructions, which can be executed by a processing component 422 of the apparatus 400 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0429] It can be further understood that in this disclosure, "multiple" refers to two or more, and other quantifiers are similar. "And / or" describes the relationship between related objects, indicating that three relationships can exist; for example, A and / or B can represent: A alone, A and B simultaneously, and B alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. The singular forms "a," "the," and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0430] It is further understood that the meaning of words such as “responding to” and “if” used in this disclosure depends on the context and the actual usage scenario. For example, the word “responding to” as used herein can be interpreted as “when” or “if” or “if”.

[0431] It is further understood that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this disclosure, first information can also be referred to as second information, and similarly, second information can also be referred to as first information.

[0432] It is further understood that although operations are described in a specific order in the accompanying drawings in the embodiments of this disclosure, this should not be construed as requiring these operations to be performed in the specific order or serial order shown, or requiring all of the shown operations to be performed to obtain the desired result. In certain environments, multitasking and parallel processing may be advantageous.

[0433] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein.

[0434] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A method for reporting amplitude coefficients, characterized in that, Applied to a terminal, the method includes: In response to supporting at least two amplitude coefficient reporting methods, determine the target amplitude coefficient reporting method; Based on the target amplitude coefficient reporting method, the amplitude coefficient is reported to the network device; The method for determining and reporting the target amplitude coefficient includes: The network device receives first indication information, which is used to indicate a first amplitude coefficient reporting method and also to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method. Based on the first indication information, the first amplitude coefficient reporting method is determined to be the target amplitude coefficient reporting method.

2. The method according to claim 1, characterized in that, The method for determining and reporting the target amplitude coefficient includes: Determine the method for reporting the target amplitude coefficient; Send a second instruction to the network device, the second instruction being used to instruct the target amplitude coefficient reporting method.

3. The method according to claim 2, characterized in that, The method further includes: The third instruction information is received from the network device, which enables the terminal to report the second instruction information.

4. The method according to claim 2 or 3, characterized in that, The second indication information is carried in the Channel State Information (CSI).

5. The method according to any one of claims 2 to 4, characterized in that, CSI includes: First information and second information, the first information corresponds to an indicator field of fixed size, and the second information corresponds to an indicator field whose size is determined based on the first information; The second instruction information is carried within the first information.

6. The method according to claim 5, characterized in that, The first information also includes at least one of the following: Channel State Information Reference Signal Resource Indicator (CRI); Layer rank indication information; Non-zero power NZP channel state information reference signal CSI-RS selection information; Broadband Channel Quality Information (CQI); Number of non-zero bandwidth amplitude coefficients; Information indicating the number of non-zero coefficients; Non-zero coefficient position indication information; Pattern indication information.

7. The method according to claim 5, characterized in that, The second information includes precoding matrix indication PMI information; The PMI information includes at least one of the following: Spatial basis vector parameter information; Frequency domain basis vector parameter information; Non-zero coefficient position indication information; Phase coefficient information; Amplitude coefficient information.

8. The method according to any one of claims 1 to 7, characterized in that, The method further includes: The method for transmitting data via the Physical Downlink Shared Channel (PDSCH) by the terminal is determined as the target transmission method.

9. The method according to claim 8, characterized in that, The target transmission method satisfies at least one of the following: Each of the at least one CMR includes at least one NZP CSI-RS resource; The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource; The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource; The terminal reports frequency domain basis vector parameter information for each CMR; Each NZP CSI-RS resource corresponds to a Transmit / Receive Point (TRP); The number of Transmission Configuration Indicator (TCI) states corresponding to PDSCH transmissions is at least one.

10. The method according to claim 8 or 9, characterized in that, The target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or The target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

11. The method according to any one of claims 1-10, characterized in that, The target amplitude coefficient reporting method includes at least one of the following: Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located. Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

12. A method for reporting amplitude coefficients, characterized in that, Applied to network devices, the method includes: The amplitude coefficient reported by the receiving terminal based on the target amplitude coefficient reporting method; Send a first indication information to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method. The first amplitude coefficient reporting method is the target amplitude coefficient reporting method of the terminal. The first indication information is also used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method.

13. The method according to claim 12, characterized in that, The method further includes: The terminal receives a second indication message, which is used to instruct the terminal on the target amplitude coefficient reporting method.

14. The method according to claim 13, characterized in that, The method further includes: A third instruction message is sent to the terminal, the third instruction message being used to enable the terminal to report the second instruction message.

15. The method according to claim 13 or 14, characterized in that, The second indication information is carried in the Channel State Information (CSI).

16. The method according to any one of claims 13 to 15, characterized in that, CSI includes: First information and second information, the first information corresponds to an indicator field of fixed size, and the second information corresponds to an indicator field whose size is determined based on the first information; The second instruction information is carried within the first information.

17. The method according to claim 16, characterized in that, The first information also includes at least one of the following: Channel State Information Reference Signal Resource Indicator (CRI); Layer rank indication information; Non-zero power NZP channel state information reference signal CSI-RS selection information; Broadband Channel Quality Information (CQI); Number of non-zero bandwidth amplitude coefficients; Information indicating the number of non-zero coefficients; Non-zero coefficient position indication information; Pattern indication information.

18. The method according to claim 17, characterized in that, The second information includes precoding matrix indication PMI information; The PMI information includes at least one of the following: Spatial basis vector parameter information; Frequency domain basis vector parameter information; Non-zero coefficient position indication information; Phase coefficient information; Amplitude coefficient information.

19. The method according to any one of claims 12 to 18, characterized in that, The method by which the terminal transmits the Physical Downlink Shared Channel (PDSCH) is the target transmission method.

20. The method according to claim 19, characterized in that, The target transmission method satisfies at least one of the following: Each of the at least one CMR includes at least one NZP CSI-RS resource; The terminal reports spatial basis vector parameter information for each NZP CSI-RS resource; The terminal reports frequency domain basis vector parameter information for each NZP CSI-RS resource; The terminal reports frequency domain basis vector parameter information for each CMR; Each NZP CSI-RS resource corresponds to a Transmit / Receive Point (TRP); The number of TCI states corresponding to the PDSCH transmission is at least 1.

21. The method according to claim 19 or 20, characterized in that, The target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal must support when it supports the target transmission method; and / or The target amplitude coefficient reporting method is an amplitude coefficient reporting method that the terminal can optionally support.

22. The method according to any one of claims 12 to 21, characterized in that, The target amplitude coefficient reporting method includes at least one of the following: Report two sets of amplitude coefficients, where the first set of amplitude coefficients includes the amplitude coefficients in the first polarization direction, and the second set of amplitude coefficients includes the amplitude coefficients in the second polarization direction, with the first polarization direction corresponding to the polarization direction where the strongest amplitude coefficient is located. Report 2N sets of amplitude coefficients, where N is the number of NZP CSI-RS contained in a CMR, each NZP CSI-RS corresponds to 2 sets of amplitude coefficients, the 2 sets of amplitude coefficients correspond to different polarization directions, and N is a positive integer.

23. A device for reporting amplitude coefficients, characterized in that, Applied to a terminal, the device includes: The determination module is used to determine the target amplitude coefficient reporting method in response to supporting at least two amplitude coefficient reporting methods. The processing module is used to report the amplitude coefficient to the network device based on the target amplitude coefficient reporting method; The receiving module is configured to receive first indication information sent by the network device, the first indication information being used to indicate a first amplitude coefficient reporting method, and the first indication information also being used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method; the determining module is configured to determine, based on the first indication information, that the first amplitude coefficient reporting method is the target amplitude coefficient reporting method.

24. A device for reporting amplitude coefficients, characterized in that, Applied to network devices, the device includes: The receiving module is used to receive the amplitude coefficients reported by the terminal based on the target amplitude coefficient reporting method; The sending module is used to send first indication information to the terminal. The first indication information is used to indicate a first amplitude coefficient reporting method. The first indication information is also used to indicate at least one channel measurement resource (CMR) corresponding to the first amplitude coefficient reporting method. The first amplitude coefficient reporting method is the target amplitude coefficient reporting method of the terminal.

25. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 1 to 11.

26. A communication device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to perform the method described in any one of claims 12 to 22.

27. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the terminal's processor, enable the terminal to perform the method described in any one of claims 1 to 11.

28. A storage medium, characterized in that, The storage medium stores instructions that, when executed by the processor of the network device, enable the network device to perform the method described in any one of claims 12 to 22.

29. A communication system comprising a terminal and network equipment, wherein, The terminal is used to perform the method as described in any one of claims 1 to 11; The network device is used to perform the method as described in any one of claims 12 to 22.

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