Channel information measurement feedback enhancement method and device and storage medium

Abstract

The invention provides a channel information measurement feedback enhancement method and device and a storage medium, relates to the technical field of communication, and is beneficial to improving the performance of a communication system. The method comprises the following steps: obtaining weighting information, wherein the weighting information comprises first weighting information and / or second weighting information; a codebook is generated based on the weighted information.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a channel information measurement feedback enhancement method, device and storage medium. Background Art

[0002] In the field of wireless communications, the propagation characteristics of electromagnetic waves have an important impact on the performance of communication systems. In particular, during the reflection process of electromagnetic waves, the reflection coefficients of waves of different polarization modes (such as TE waves and TM waves) are different. This difference can lead to inconsistencies in the received power of the two polarization directions in a dual-polarization antenna system, that is, the ratio of the received power of the two polarization directions is usually not 1. Moreover, due to the complexity of the wireless propagation environment, this received power ratio will change randomly depending on the environment. This random change not only makes the performance of the communication system unstable, but may also further lead to a decline in the overall performance of the system. Therefore, how to effectively deal with the problem of inconsistent received power in different polarization directions has become one of the important research directions for improving the performance of wireless communication systems. Summary of the invention

[0003] The embodiments of the present disclosure provide a channel information measurement feedback enhancement method, device and storage medium, which are conducive to improving the performance of the communication system. The technical solutions provided by the embodiments of the present disclosure are as follows:

[0004] On the one hand, a channel information measurement feedback enhancement method is provided, which is applied to a first node, and the method includes:

[0005] Acquiring weighted information, where the weighted information includes first weighted information and / or second weighted information;

[0006] A codebook is generated based on the weight information.

[0007] On the other hand, a channel information measurement feedback enhancement method is provided, which is applied to a second node, and the method includes:

[0008] The weighted information is sent, where the weighted information includes the first weighted information and / or the second weighted information.

[0009] On the other hand, a communication device is provided, applied to a first node, the device comprising:

[0010] A communication module, used to obtain weighted information, where the weighted information includes first weighted information and / or second weighted information;

[0011] The processing module is used to generate a codebook based on the weighted information.

[0012] On the other hand, a communication device is provided, applied to a second node, the device comprising:

[0013] The communication module is used to send weighted information, where the weighted information includes first weighted information and / or second weighted information.

[0014] On the other hand, a communication device is provided, comprising: a memory and a processor; the memory and the processor are coupled; the memory is used to store computer program instructions executable by the processor; when the processor executes the computer program instructions, the channel information measurement feedback enhancement method of any of the above embodiments is implemented.

[0015] On the other hand, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed on a computer (eg, a communication device), the channel information measurement feedback enhancement method of any of the above embodiments is implemented.

[0016] On the other hand, a computer program product is provided, which includes computer program instructions, and when the computer program instructions are executed, the channel information measurement feedback enhancement method of any of the above embodiments is implemented.

[0017] The technical solution provided by the embodiment of the present disclosure obtains weighted information, the weighted information includes first weighted information and / or second weighted information; and generates a codebook based on the weighted information. In this way, introducing weighted information into the codebook design can effectively reduce the impact caused by inconsistent received power in different polarization directions, thereby better utilizing polarization diversity gain and improving communication system performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A flow chart of a channel information measurement feedback method provided by an embodiment of the present disclosure;

[0019] Figure 2 A flow chart of another channel information measurement feedback method provided by an embodiment of the present disclosure;

[0020] Figure 3 A schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure;

[0021] Figure 4 A flow chart of a channel information measurement feedback enhancement method provided by an embodiment of the present disclosure;

[0022] Figure 5 A flow chart of another channel information measurement feedback enhancement method provided by an embodiment of the present disclosure;

[0023] Figure 6 A schematic diagram of a communication device provided in an embodiment of the present disclosure;

[0024] Figure 7 A schematic diagram of another communication device provided in an embodiment of the present disclosure;

[0025] Figure 8 A schematic diagram of the structure of another communication device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0027] In the description of the present disclosure, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" means one or more, and "plurality" means two or more. The words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not limit them to be different.

[0028] It should be noted that in the present disclosure, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present disclosure should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0029] In the field of wireless communications, the propagation characteristics of electromagnetic waves have an important impact on the performance of communication systems. In particular, during the reflection process of electromagnetic waves, the reflection coefficients of waves of different polarization modes (such as TE waves and TM waves) are different. This difference can lead to inconsistencies in the received power of the two polarization directions in a dual-polarization antenna system, that is, the ratio of the received power of the two polarization directions is usually not 1. Moreover, due to the complexity of the wireless propagation environment, this received power ratio will change randomly depending on the environment. This random change not only makes the performance of the communication system unstable, but may also further lead to a decline in the overall performance of the system. Therefore, how to effectively deal with the problem of inconsistent received power in different polarization directions has become one of the important research directions for improving the performance of wireless communication systems.

[0030] In the design of current wireless communication protocols, the design of codebooks does not fully consider the impact of the non-1 ratio of received power in different polarization directions on the channel. This neglect may result in the channel polarization diversity gain not being fully utilized in practical applications, thereby limiting the improvement of system performance. Polarization diversity gain and spatial diversity gain are important resources for improving channel capacity and anti-interference capabilities in wireless communication systems, but the codebook design in existing protocols does not fully utilize these resources.

[0031] Currently, there are two channel measurement mechanisms:

[0032] 1) Downlink (DL) channel measurement feedback mechanism:

[0033] like Figure 1 As shown, the downlink channel measurement mechanism mainly includes the following steps:

[0034] Step 1: A base station (BS) sends measurement configuration information to a user equipment (UE), including:

[0035] Resource configuration information, configures the downlink reference signal that the UE needs to measure.

[0036] Feedback configuration information defines the relevant parameters of UE feedback, including feedback quantity, time domain characteristics of feedback (periodic, semi-persistent, aperiodic), codebook configuration, frequency domain granularity of precoding matrix indicator (PMI) and channel quality indicator (CQI), measurement constraint configuration, etc. The feedback quantity configures the content that the UE needs to feedback. When it is set to

[0037] When 'cri-RI-PMI-CQI' or 'cri-RI-LI-PMI-CQI', the UE needs to feed back codebook related parameters (PMI).

[0038] The measurement configuration information may be configured by the BS to the UE via a radio resource control (RRC) or a media access control control element (MAC control element, MAC CE) or a downlink control information (DCI) signal.

[0039] Step 2: For non-periodic and semi-continuous feedback configurations, the BS needs to send a trigger signaling to the UE to trigger the UE to perform measurement feedback.

[0040] Step 3: The BS sends a downlink reference signal, and the UE measures the corresponding downlink reference signal according to the measurement configuration information to obtain channel state information.

[0041] Step 4: The UE feeds back channel state information to the BS via the physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH).

[0042] 2) Uplink (UL) channel measurement feedback mechanism:

[0043] like Figure 2 As shown, the uplink channel measurement mechanism mainly includes the following steps:

[0044] Step 1: The BS sends measurement configuration information to the UE, including usage indication, uplink reference signal transmission period and resources, antenna port configuration, etc. When the usage indication is set to 'codebook', the BS needs to feedback codebook related parameters (transmitted precoding matrix indicator (TPMI)).

[0045] Step 2: For non-periodic and semi-continuous feedback configurations, the BS needs to send a trigger signaling to the UE for triggering, and the UE will send an uplink reference signal.

[0046] Step 3: The UE sends an uplink reference signal to the BS on the specified time-frequency resources. The BS measures the corresponding uplink reference signal to obtain channel state information.

[0047] Step 4: The BS feeds back channel state information to the UE.

[0048] The codebook determination methods in the related art include the following two methods:

[0049] Downlink (Type I codebook):

[0050] The downlink codebook needs to be calculated based on the PMI information and the antenna array structure. The method can be summarized as follows:

[0051] According to the index i in PMI 1,1 ,i 1,2 Determine the basis vector, according to the index i in PMI 1,1 ,i 1,2 ,i 3 Determine the basis vector of another layer, according to the index i in PMI 2 Determine the inter-polarization phase adjustment and finally integrate it into the codebook matrix.

[0052] Upside (codebook based):

[0053] The UE determines the uplink codebook by looking up a table according to the scheduling request indicator (SRI), TPMI and the number of transmission layers fed back by the BS.

[0054] In view of this, the present disclosure provides a channel information measurement feedback enhancement method, the method comprising: obtaining weighted information, the weighted information comprising first weighted information and / or second weighted information; generating a codebook based on the weighted information. In this way, introducing weighted information into the codebook design can effectively reduce the impact caused by the inconsistency of received power in different polarization directions, thereby better utilizing polarization diversity gain and improving communication system performance.

[0055] The channel information measurement feedback enhancement method provided in the embodiment of the present disclosure can be applied to systems of various communication formats. For example, the channel information measurement feedback enhancement method provided in the embodiment of the present disclosure can be applied to systems including but not limited to long term evolution (LTE) systems, various versions based on LTE evolution, fifth generation (5th generation, 5G) communication systems, wireless local area networks (wireless fidelity, Wi-Fi) systems, third generation partnership projects (third generation partnership project, 3GPP) related communication systems, ambient internet of things (ambient IoT) systems or systems integrating multiple systems. In addition, the channel information measurement feedback enhancement method provided in the embodiment of the present disclosure can also be applied to future-oriented communication systems (such as 6G, 7G communication systems), etc., and the embodiment of the present disclosure is not limited to this.

[0056] The network architecture of the mobile communication network (including but not limited to 3G, 4G, 5G and future mobile communication networks) in the embodiments of the present disclosure may include at least a first communication node and a second communication node. In the uplink, the first communication node may be a terminal side device (for example, including but not limited to a terminal), and the second communication node may be a network side device (for example, including but not limited to a base station). In the downlink, the second communication node may be a terminal side device (for example, including but not limited to a terminal), and the first communication node may be a network side device (for example, including but not limited to a base station). Among them, the first communication node may be referred to as a first node, and the second communication node may be referred to as a second node.

[0057] Exemplarily, taking the first node as a terminal and the second node as a base station, Figure 31 shows a schematic diagram of the architecture of a communication system provided by an embodiment of the present disclosure, and the communication system includes a terminal 10 and a base station 20. The terminal 10 is in communication connection with the base station 20. The terminal 10 and the base station 20 may be one or more, and the number is not limited.

[0058] Among them, the terminal 10 can be a terminal side device (for example, including but not limited to a terminal, an Internet of Things device), etc., and the base station 20 can be a network side device (for example, including but not limited to a base station), an access network device, a relay, an auxiliary communication node, etc.

[0059] In some embodiments, the random access type supported by the terminal for performing a random access procedure with a network device is the capability of the terminal, and different terminals may support different random access types.

[0060] In some embodiments, the terminal may be a legacy terminal, a 5G lightweight user terminal (RedCap terminal), etc.

[0061] In some embodiments, the terminal may be a device with wireless transceiver function. The terminal may be a passive device, an ambient loT device, a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc. The embodiments of the present disclosure do not limit the application scenarios. The terminal may sometimes also be referred to as a tag, a user, a UE, an access terminal, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent or a UE device, etc., which is not limited in the embodiments of the present disclosure.

[0062] In some embodiments, the base station can be a base station or an evolved base station (eNB or eNodeB) in LTE, long term evolution advanced (LTEA), a base station device in a 5G network, or a base station in a future communication system, etc. The base station may include various macro base stations, micro base stations, home base stations, wireless remote stations, reconfigurable intelligent surfaces (RISs), routers, relays, transmit receive points (TRP), wireless fidelity (WIFI) devices, UEs and other network side devices. The embodiments of the present disclosure are not limited to this.

[0063] It should be noted that Figure 3 This is just an exemplary framework diagram. Figure 3 The number of devices included in the Figure 3 In addition to the devices shown, the communication system may also include other devices, such as core network devices, which is not limited in the present disclosure.

[0064] The application scenarios of the embodiments of the present disclosure are not limited. The system architecture and business scenarios described in the embodiments of the present disclosure are intended to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. It is known to those skilled in the art that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

[0065] The present disclosure provides a channel information measurement feedback enhancement method, which is applied to a first node. Figure 4 As shown, the method comprises the following steps:

[0066] S101. Obtain weighting information.

[0067] The weighted information includes first weighted information and / or second weighted information.

[0068] In some embodiments, the first weighted information is inter-polarization weighted information, and the second weighted information is intra-polarization weighted information. In this way, introducing inter-polarization weighting in codebook design can effectively reduce the impact caused by inconsistent received power in different polarization directions, thereby better utilizing polarization diversity gain. At the same time, introducing intra-polarization weighting in codebook design can further tap the potential of spatial diversity gain.

[0069] In some embodiments, the weighting information is carried by at least one of the following: pre-coding matrix indication information (PMI), transmitted precoding matrix indication information (TPMI), control information, and measurement feedback information.

[0070] It is understandable that the transmission carrier of the weighted information is different depending on the node that sends the weighted information. For example, if the first node is a BS, and the BS obtains the weighted information through the UE, that is, when the UE sends the weighted information to the BS, the weighted information can be carried in the PMI. For another example, if the first node is a UE, and the UE obtains the weighted information through the BS, that is, when the BS sends the weighted information to the UE, the weighted information can be carried in the DCI, such as in the TPMI field in the DCI, or in the added field in the DCI.

[0071] In some embodiments, the weighting information may be carried in feedback information (ie, the measurement feedback information mentioned above) obtained by the second node based on measuring the reference signal.

[0072] In some embodiments, the first weighted information includes a first flag bit or a first information field. The first flag bit is used to indicate whether a predefined first weighting ratio or a first weighting ratio combination is applied. The first information field includes at least one first weighting ratio and / or an index of at least one first weighting ratio.

[0073] When the first weighted information is inter-polarization weighted information, the first weighted ratio may also have other names, and may be called an inter-polarization weighted ratio, which is not limited in the present disclosure.

[0074] In some embodiments, the second weighted information includes a second flag or a second information field. The second flag is used to indicate whether a predefined first weighted array or a combination of first weighted arrays is applied. The second information field includes at least one first weighted array and / or an index of at least one first weighted array.

[0075] When the second weighted information is intra-polarization weighted information, the first weighted array may have other names, and may also be called an intra-polarization weighted array, which is not limited in the present disclosure.

[0076] In some embodiments, obtaining weighted information includes: sending a reference signal; and receiving feedback information obtained by the second node based on measuring the reference signal, wherein the feedback information includes weighted information.

[0077] In some embodiments, obtaining weighted information includes: sending a reference signal; receiving feedback information obtained by the second node based on measuring the reference signal, the feedback information including the reference signal receiving power corresponding to each port; and determining weighted information based on the feedback information.

[0078] The reference signal may be a channel state information reference signal (CSI-RS) or a sounding reference signal (SRS).

[0079] In some embodiments, the feedback information further includes codebook information. The codebook information includes relevant parameters of the codebook that need to be determined.

[0080] In some embodiments, the codebook information includes codebook indices, and the codebook indices are used to generate codebook basis vectors and codebook matrices.

[0081] In some embodiments, the codebook information includes an index carried in the TPMI field, the index corresponds to a predefined number of transmission layers, TPMI, and weighting information. The number of transmission layers and TPMI are used to select a codebook or a codebook matrix from a predefined codebook set, and the weighting information is used to process the codebook matrix.

[0082] In some embodiments, the parameter usage indication in the reference signal resource set corresponding to the reference signal is a second codebook configuration parameter or a codebook.

[0083] In some embodiments, the parameter usage indication in the reference signal resource set corresponding to the reference signal is configured as a weighted measurement parameter.

[0084] In some embodiments, the weighted measurement parameter is a first weighted measurement parameter, the number of ports configured for a reference signal at the first node is two, the reference signal is sent by two ports of different polarizations in the first node, and the weighted information includes first weighted information; the weighted measurement parameter is a second weighted measurement parameter, the number of ports configured for a reference signal at the first node is half of the total number of ports of the first node, the reference signal is sent by ports of the first node with the same polarization but not co-located, and the weighted information includes second weighted information; the weighted measurement parameter is a third weighted measurement parameter, and the weighted information includes first weighted information and second weighted information.

[0085] In some embodiments, first signaling is received, where the first signaling is used to trigger the first node to perform measurement feedback on a reference signal.

[0086] In some embodiments, second signaling is received, where the second signaling is used to trigger the first node to send a reference signal.

[0087] In some embodiments, first configuration information is received, the first configuration information comprising at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

[0088] In some embodiments, the first configuration information is carried in at least one of the following: radio resource control, media access control (MAC) control element (CE), and control information.

[0089] In some embodiments, second configuration information is received, the second configuration information includes first indication information, and the first indication information is used to indicate feedback weighting information.

[0090] In some embodiments, the second configuration information further includes a weighting type.

[0091] In some embodiments, when the weighting type is the first weighting type, the indication weighting information includes the first weighting information; when the weighting type is the second weighting type, the indication weighting information includes the second weighting information; when the weighting type is the third weighting type, the indication weighting information includes the first weighting information and the second weighting information.

[0092] In some embodiments, when the weighting type is the first weighting type, the reference signal is sent by two ports of different polarizations in the first node; when the weighting type is the second weighting type, the reference signal is sent by a port of the same polarization in the base station; when the weighting type is the third weighting type, the reference signal is sent by all ports in the first node.

[0093] In some embodiments, the second configuration information is carried in at least one of the following: radio resource control, MAC CE, control information (eg, downlink control information).

[0094] S102: Generate a codebook based on weighted information.

[0095] In some embodiments, when the codebook is determined at least based on the first weighted information, codebook elements of different transmission layers in the codebook are generated based on different first weighted information, and codebook elements corresponding to different ports in the same transmission layer in the codebook are generated based on the same first weighted information.

[0096] In some embodiments, in a transmission layer of a codebook, a codebook element corresponding to a first port is determined based on a first weighted value, and a codebook element corresponding to a second port is determined based on a second weighted value.

[0097] The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

[0098] In some embodiments, when the codebook is determined based on at least the first weighting information, codebook elements of different transmission layers in the codebook are generated based on the same first weighting information.

[0099] In some embodiments, a codebook element corresponding to a first port in a first transmission layer of a codebook is determined based on a first weighted value, and a codebook element corresponding to a second port in the first transmission layer is determined based on a second weighted value; a codebook element corresponding to a first port in a second transmission layer of the codebook is determined based on the second weighted value, and a codebook element corresponding to a second port in the second transmission layer is determined based on the first weighted value.

[0100] The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

[0101] In some embodiments, the first port may correspond to a plurality of ports of the same polarization, the second port may correspond to a plurality of ports of the same polarization, and the polarization directions of the first port and the second port are different.

[0102] When the first weighted information is inter-polarization weighted information, the first weighted value may have other names, such as an inter-polarization weighted value, and the second weighted value may have other names, such as a second inter-polarization weighted value, which is not limited in the present disclosure.

[0103] The first transmission layer or the second transmission layer may include at least one transmission layer in a codebook.

[0104] In some embodiments, the first transmission layer includes at least one transmission layer located at an odd position in the codebook, and the second transmission layer includes at least one transmission layer located at an even position in the codebook; or, the first transmission layer includes at least one transmission layer located at an even position in the codebook, and the second transmission layer includes at least one transmission layer located at an odd position in the codebook.

[0105] In some embodiments, the second weighting information corresponds to at least one first weighting array, the number of the first weighting arrays is the same as the number of the basis vectors, and one first weighting array corresponds to one basis vector in sequence. When the codebook is determined based on at least the second weighting information, the codebook is determined based on multiplying the elements corresponding to different ports in the basis vector by the values ​​in the first weighting array corresponding to the basis vector.

[0106] In some embodiments, when the codebook is determined based on at least the second weighting information, the codebook is determined based on multiplying the elements corresponding to the non-co-located ports in the codebook matrix by the corresponding values ​​in the first weighting array.

[0107] In some embodiments, the above codebook is a normalized codebook.

[0108] Among them, the scheme of generating a codebook based on the above weighted information can also be called a codebook enhancement scheme, and the codebook enhancement scheme can also be further divided into the following three schemes.

[0109] a) Only the inter-polarization weighting is added, that is, the codebook is determined based only on the first weighting information (inter-polarization weighting information).

[0110] Among them, adding only inter-polarization weighting can be divided into the following two types:

[0111] a-1) The inter-polarization weighting ratio is not shared between layers, that is, the codebook elements of different transmission layers in the above codebook are generated based on different first weighting information, and the codebook elements corresponding to different ports in the same transmission layer in the codebook are generated based on the same first weighting information.

[0112] a-2) The inter-layer shared polarization weighting ratio, that is, when the above codebook is determined at least based on the first weighting information, the codebook elements of different transmission layers in the codebook are generated based on the same first weighting information.

[0113] b) Only intra-polarization weighting is added, that is, the codebook is determined based on the second weighting information only.

[0114] c) adding inter-polarization and intra-polarization weighting at the same time, that is, the codebook is determined based on the first weighting information and the second weighting information.

[0115] Since the first node and the second node represent different objects, the corresponding channel information measurement feedback enhancement methods are different, and the current wireless communication protocol does not have specific content and methods for measuring and feeding back inter-polarization weighted information and intra-polarization weighted information. This makes it difficult for the existing system to give full play to the advantages of polarization diversity gain and spatial diversity gain, limiting the further improvement of communication system performance. Based on this, the channel information measurement feedback enhancement method is described in detail below according to the difference in the objects represented by the first node and the second node.

[0116] Case 1: Taking the first node as a BS, the second node as a UE, the first weighted information as inter-polarization weighted information, and the second weighted information as intra-polarization weighted information as an example, the BS obtains weighted information (inter-polarization weighted information and / or intra-polarization weighted information), and generates a downlink (DL) codebook based on the weighted information.

[0117] Case 1 focuses on DL codebook enhancement. The BS sends a downlink reference signal (such as CSI-RS) to the UE. The UE selects weighting information by measuring the downlink reference signal and then feeds back the weighting information through the PMI. After receiving the PMI, the BS can generate an enhanced DL codebook. The specific process is as follows:

[0118] (1) Configurations:

[0119] The BS configures the codebook type used in DL transmission by sending configuration information to the UE, and the configuration information includes a codebook type (codebookType) parameter (ie, the first configuration information mentioned above). The codebookType parameter can be configured by the BS to the UE through RRC or MAC CE or DCI signal.

[0120] Alt 1: codebookType parameter is optional. When the codebookType parameter is configured as 'first codebook configuration parameter', the UE needs to consider inter-polarization weighting and / or intra-polarization weighting when selecting the DL codebook and feed back the weighting information through the PMI.

[0121] Alt 2: Adopt the codebook configuration in the relevant protocol. When the codebookType parameter is configured as 'Type I single-panel codebook' or 'Type I multipanel codebook', the UE needs to consider the inter-polarization weighting and / or intra-polarization weighting when selecting the DL codebook, and feed back the weighting information through the PMI.

[0122] (2) Weighted information determination process:

[0123] The UE determines that the relevant feedback configuration is triggered by receiving the relevant signaling (i.e., the first signaling mentioned above), and starts to determine the weighting information by measuring the corresponding downlink reference signal. The UE then sends the PMI to the BS via the PUSCH / PUCCH. The PMI includes a codebook index (codebook indices), which includes the parameters required to determine the codebook and the weighting information specified in the protocol.

[0124] In some embodiments, the BS sends a downlink reference signal; the BS receives feedback information (eg, PMI) obtained by the UE based on measurement of the downlink reference signal, where the feedback information includes weighting information.

[0125] In some embodiments, the BS sends a downlink reference signal; the BS receives feedback information obtained by the UE based on measurement of the downlink reference signal, the feedback information including the reference signal receiving power corresponding to each port; the BS may determine weighting information based on the feedback information.

[0126] The above-mentioned weighting information includes inter-polarization weighting information and / or intra-polarization weighting information.

[0127] The inter-polarization weighted information includes a first flag bit or a first information field.

[0128] The first information field may include at least one inter-polarization weighting ratio (i.e., the first weighting ratio mentioned above) and / or at least one index of the inter-polarization weighting ratio (i.e., the index of the first weighting ratio mentioned above). The at least one inter-polarization weighting ratio may be represented by one or more numerical values ​​in the first information field.

[0129] The first flag bit is used to indicate whether to apply a predefined inter-polarization weighting ratio (i.e., the first weighting ratio mentioned above) or an inter-polarization weighting ratio group (i.e., the first weighting ratio group mentioned above). The corresponding related protocol needs to have predefined information to determine whether to apply the predefined inter-polarization weighting ratio or the inter-polarization weighting ratio group based on the first flag bit.

[0130] For example, Table 1 provides an example of correspondence between an index of an inter-polarization weighting ratio and a value of the inter-polarization weighting ratio.

[0131] Table 1

[0132] Index of inter-polarization weighting ratio Polarization weighting ratio 1 0.2 2 0.5 3 0.8 ... ... N ...

[0133] It is understandable that the value and number of the inter-polarization weighting ratios may be changed according to actual application conditions.

[0134] The intra-polarization weighted information includes a second flag bit or a second information field.

[0135] The second information field includes at least one polarization intra-weighting array (i.e., the first weighting array mentioned above) and / or an index of at least one polarization intra-weighting array (i.e., the index of the first weighting array mentioned above). At least one polarization intra-weighting array can be represented by multiple numerical values, and the number of numerical values ​​is equal to half of the number of ports.

[0136] The second flag bit is used to indicate whether to apply a predefined intra-polarization weighting array or a combination of intra-polarization weighting arrays.

[0137] For example, Table 2 provides an example of the correspondence between the index of an intra-polarization weighting array and the intra-polarization weighting array.

[0138] Table 2

[0139]

[0140] (3) Codebook generation process:

[0141] Based on the DL codebook, the DL codebook considering inter-polarization weighting and / or intra-polarization weighting needs to be calculated based on the codebook indices and weighting information in the PMI.

[0142] Among them, codebook enhancement includes three schemes: adding only inter-polarization weighting, adding only intra-polarization weighting, and adding both inter-polarization and intra-polarization weighting.

[0143] Alt 1: Only add polarization weighting. Alt 1 can be further divided into Alt 1-1 layers that do not share polarization weighting ratios, and Alt 1-2 layers that share polarization weighting ratios.

[0144] For Alt 1-1: In this scheme, the inter-polarization weighted information corresponds to one (rank = 1) or more (rank>1) inter-polarization weighted ratios. The number of inter-polarization weighted ratios is the same as the number of transmission layers, and one inter-polarization weighted ratio value corresponds to one transmission layer in sequence. When calculating the codebook, each inter-polarization weighted ratio corresponds to two inter-polarization weighted values ​​(for example, the inter-polarization weighted ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in a codebook vector of a transmission layer, an element corresponding to a polarization direction port is multiplied by one of the inter-polarization weighted values, and an element corresponding to another polarization direction port is multiplied by another inter-polarization weighted value, and then normalized.

[0145] For example, taking the codebook with rank=2 as an example, assuming that the weighted ratio between polarizations is p 1 and p 2 , the codebook matrix is ​​generated according to the requirements in the protocol and the codebook indices in the PMI. The elements corresponding to different polarization ports in the codebook matrix are multiplied by the corresponding polarization weight values, and then normalized. The final codebook is:

[0146]

[0147] Wherein, norm(·) in this disclosure represents the normalization process, v l,m represents a basis vector, v l′,m′ represents another basis vector, Indicates inter-polarization phase adjustment.

[0148] For Alt 1-2: In this scheme, the inter-polarization weighting information corresponds to an inter-polarization weighting ratio, and the inter-polarization weighting ratio can apply a codebook corresponding to a multiple of 2 transmission layers (for example, the codebook is a 6-layer codebook, 2 of which consider inter-polarization weighting or 4 of which consider inter-planar weighting). When calculating the codebook, each inter-polarization weighting ratio corresponds to two inter-polarization weighting values ​​(for example, the inter-polarization weighting ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1)), in the codebook vector of the first transmission layer, the element corresponding to the first polarization direction port is multiplied by the first inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the second inter-polarization weighted value. In the codebook vector of the second transmission layer, the element corresponding to the first polarization direction port is multiplied by the second inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the first inter-polarization weighted value. This process is repeated for subsequent layers. Finally, normalization is performed.

[0149] For example, taking the codebook with rank=2 as an example, assuming that the weighted ratio between polarizations is p 1 , the final codebook is:

[0150]

[0151] Alt 2: Add intra-polarization weighting only.

[0152] For the Alt 2 scheme, the intra-polarization weighting information corresponds to one or more intra-polarization weighting arrays, the number of intra-polarization weighting arrays is the same as the number of basis vectors, and one intra-polarization weighting array corresponds to one basis vector in sequence.

[0153] The elements corresponding to different ports in the vector are multiplied by the values ​​in the polarization weight array respectively, and then the codebook matrix is ​​constructed from this vector according to the protocol.

[0154] For example, taking the basis vectors N1=2 and N2=1 as an example, assuming that the polarization weighting array is (q 1 ,q 2 ), the basis vector with polarization intra-weighting is:

[0155]

[0156] Among them, N in this disclosure 1 Represents the number of antenna ports in the first dimension in a polarization direction, O 1 represents the oversampling factor, l=0,…,N 1 O 1 -1.

[0157] The intra-polarization weighting arrays for different basis vectors in the same codebook may be different.

[0158] Alt 3: Add both inter-polarization and intra-polarization weighting. Alt 3 can be further divided into Alt 3-1 where the inter-polarization weighting ratio is not shared between layers, and Alt 3-2 where the inter-polarization weighting ratio is shared between layers.

[0159] For Alt 3-1: the intra-polarization weighting information corresponds to one or more intra-polarization weighting arrays, the number of intra-polarization weighting arrays is the same as the number of basis vectors, and one intra-polarization weighting array corresponds to one basis vector in sequence.

[0160] The elements corresponding to different ports in the basis vector are multiplied by the values ​​in the polarization weight array corresponding to the basis vector, and then the codebook matrix is ​​constructed from this vector according to the protocol.

[0161] The inter-polarization weighted information corresponds to one (rank = 1) or multiple (rank>1) inter-polarization weighted ratios, the number of inter-polarization weighted ratios is the same as the number of transmission layers, and one inter-polarization weighted ratio value corresponds to one transmission layer in sequence. When calculating the codebook, each inter-polarization weighted ratio corresponds to two inter-polarization weighted values ​​(for example, the inter-polarization weighted ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in a codebook vector of a transmission layer, an element corresponding to a polarization direction port is multiplied by one of the inter-polarization weighted values, and an element corresponding to another polarization direction port is multiplied by another inter-polarization weighted value, and then normalized.

[0162] For example, taking the codebook with N1=2, N2=1, and rank=2 as an example, assuming that the weighted ratio between polarizations is p 1 and p 2 , the polarization weight array is (q 1 ,q 2 ) and (q 3 ,q 4 ), the final codebook is The specific determination method is as follows:

[0163]

[0164] For Alt 3-2: the intra-polarization weighting information corresponds to one or more intra-polarization weighting arrays, the number of intra-polarization weighting arrays is the same as the number of basis vectors, and one intra-polarization weighting array corresponds to one basis vector in sequence.

[0165] The elements corresponding to different ports in the basis vector are multiplied by the values ​​in the polarization weight array respectively, and then the codebook matrix is ​​constructed from this vector according to the protocol.

[0166] The inter-polarization weighted information corresponds to an inter-polarization weighted ratio, and the inter-polarization weighted ratio may apply a codebook corresponding to a multiple of 2 transmission layers (for example, the codebook is a 6-layer codebook, 2 of which consider inter-polarization weighting or 4 of which consider inter-planar weighting). When calculating the codebook, each inter-polarization weighted ratio corresponds to two inter-polarization weighted values ​​(for example, the inter-polarization weighted ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in the codebook vector of the first transmission layer, the element corresponding to the first polarization direction port is multiplied by the first inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the second inter-polarization weighted value. In the codebook vector of the second transmission layer, the element corresponding to the first polarization direction port is multiplied by the second inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the first inter-polarization weighted value. This process is repeated for subsequent layers. Finally, normalization is performed.

[0167] For example, taking the codebook with N1=2, N2=1, and rank=2 as an example, assuming that the weighted ratio between polarizations is p 1 , the polarization weight array is (q 1 ,q 2 ) and (q 3 ,q 4 ), the final codebook is The specific determination method is as follows:

[0168]

[0169] Case 2: Taking the first node as a BS, the second node as a UE, the first weighted information as inter-polarization weighted information, and the second weighted information as intra-polarization weighted information as an example, the BS obtains weighted information (including inter-polarization weighted information and / or intra-polarization weighted information), and generates a downlink (DL) codebook based on the weighted information.

[0170] Case 2 also focuses on DL codebook enhancement. The BS configures a second configuration information (e.g., CSI-ReportConfig) for the UE, which includes the first indication information. The first indication information is used to indicate feedback weighting information (including inter-polarization weighting information and / or intra-polarization weighting information). After this second configuration information is triggered, the UE selects the weighting information by measuring the downlink reference signal and feeds the weighting information back to the BS. The BS generates a DL codebook based on the weighting information fed back by the UE. The specific process is as follows:

[0171] (1) Configurations:

[0172] The BS configures the feedback amount in CSI-ReportConfig (ie, configures the second configuration information including the indication information) to indicate the information that the UE needs to feedback.

[0173] Alt 1: New feedback amount option. When the first indication information for indicating feedback weighted information is configured in CSI-ReportConfig, the UE selects weighted information by measuring the downlink reference signal and feeds back the weighted information to the BS. In other words, it can also be called that when the feedback amount in CSI-ReportConfig is configured as 'polarization weighted feedback', the UE selects weighted information by measuring the downlink reference signal and feeds back the weighted information to the BS.

[0174] Alt 2: New feedback quantity option, add configuration parameter 'weighting type' in CSI-ReportConfig to control the measurement feedback content. There are three parameters for weighting type: first weighting type, second weighting type, and third weighting type.

[0175] When the weighting type is the first weighting type, indicating that the weighting information includes inter-polarization weighting information, the UE selects the inter-polarization weighting ratio by measuring the downlink reference signal, and feeds back the corresponding inter-polarization weighting information to the BS.

[0176] When the weighting type is the second weighting type, indicating that the weighting information includes intra-polarization weighting information, the UE selects the intra-polarization weighting array by measuring the downlink reference signal, and feeds back the corresponding intra-polarization weighting information to the BS.

[0177] When the weighting type is the third weighting type, indicating that the weighting information includes inter-polarization weighting information and intra-polarization weighting information, the UE selects the inter-polarization weighting ratio and the intra-polarization weighting array by measuring the downlink reference signal, and feeds back the corresponding inter-polarization weighting information and intra-polarization weighting information to the BS.

[0178] In addition, the weighting types correspond to different parameters, and the corresponding sending modes of the downlink reference signal are different.

[0179] When the weighting type is the first weighting type, the downlink reference signal measured by the UE is sent by two ports of different polarizations in the BS.

[0180] When the weighting type is the second weighting type, the downlink reference signal measured by the UE is sent by a co-polarized port in the BS.

[0181] When the weighting type is the third weighting type, the downlink reference signal measured by the UE is sent by all ports in the BS.

[0182] It can be understood that the feedback amount and the 'weighting type' can be configured by the BS to the UE via RRC or MAC CE or DCI signal.

[0183] (2) The weighted information determination process may refer to the weighted information determination process in (2) of situation 1 for details, and will not be described in detail here.

[0184] (3) Codebook generation process:

[0185] If the feedback information of the UE includes the measurement result, the BS first determines the inter-polarization weighted ratio and / or the intra-polarization weighted array according to the measurement result, and then generates a codebook according to the inter-polarization weighted ratio and / or the intra-polarization weighted array in combination with the codebook generation scheme in the protocol.

[0186] If the feedback information of the UE includes weighting information, the BS generates a codebook according to the inter-polarization weighting ratio or / and the intra-polarization weighting array fed back by the weighting information in combination with the codebook generation scheme in the protocol.

[0187] The method of generating a codebook by combining the inter-polarization weighting ratio and / or the intra-polarization weighting array and the codebook generation scheme in the protocol may refer to (3) in Case 1, Alt 1-2, Alt 2, Alt 3-2. No further details will be given here.

[0188] Case 3: Taking the first node as a UE, the second node as a BS, the first weighted information as inter-polarization weighted information, and the second weighted information as intra-polarization weighted information as an example, the UE obtains weighted information (including inter-polarization weighted information and / or intra-polarization weighted information), and generates an uplink (UL) codebook based on the weighted information.

[0189] Case 3 focuses on UL codebook enhancement. The UE sends an uplink reference signal (such as SRS) to the BS. The BS selects weighting information (including inter-polarization weighting information and / or intra-polarization weighting information) by measuring the uplink reference signal, and then feeds back the weighting information as part of the codebook information. After receiving the feedback information, the UE can generate an enhanced UL codebook. The specific process is as follows:

[0190] (1) Configurations:

[0191] In related technologies, if the parameter usage indication in the reference signal resource set (SRS-ResourceSet) corresponding to the uplink reference signal sent by the UE to the BS is 'codebook', the BS measures the uplink reference signal transmitted by the UE, selects a codebook from a predefined codebook set, and feeds back the selected codebook to the BS through TPMI.

[0192] Alt 1: A new usage indication parameter is optional. If this option is selected during configuration, it means that this uplink reference signal is used to determine a codebook that takes polarization weighting into account. If the parameter usage indication in the reference signal resource set is set to 'second codebook configuration parameter', the BS needs to consider inter-polarization weighting and / or intra-polarization weighting when selecting a UL codebook, and then feeds back the weighting information as part of the codebook information (e.g., including the codebook index).

[0193] Alt 2: Adopt the configuration in the relevant protocol. If the parameter usage indication in SRS-ResourceSet is set to 'codebook', the BS needs to consider the inter-polarization weighting and / or intra-polarization weighting when selecting the UL codebook, and then feed back the weighting information as part of the codebook information (eg, including the codebook index).

[0194] The new usage indication parameter may be configured by the BS to the UE via an RRC or MAC CE or DCI signal.

[0195] (2) Weighted information determination process:

[0196] The UE determines that the relevant feedback configuration is triggered by receiving the relevant signaling (i.e., the second signaling mentioned above), and starts to send an uplink reference signal to the BS, and the BS measures the uplink reference signal to determine the weighting information. The BS then feeds back the selected codebook (e.g., in the form of a codebook index) and weighting information to the UE.

[0197] In some embodiments, the UE sends an uplink reference signal; the UE receives feedback information obtained by the BS based on measuring the uplink reference signal, where the feedback information includes weighting information.

[0198] In some embodiments, the UE sends an uplink reference signal; the UE receives feedback information obtained by the BS based on measuring the uplink reference signal, the feedback information includes the reference signal receiving power corresponding to each port; the UE can determine weighting information based on the feedback information.

[0199] In some embodiments, the BS may feed back weighted information to the UE via DCI. Specifically, the following two methods are included:

[0200] Alt 1: weighted information is fed back to the UE in the TPMI field in the DCI.

[0201] The content in the TPMI field in the DCI corresponds to the number of transport layers, TPMI and weighting information. A corresponding relationship table needs to be defined in the relevant protocol, for example, as shown in Table 3.

[0202] Table 3

[0203]

[0204] Alt 2: Add a field in the DCI. The content of this field is the weighting information. The size of this field is determined by the form of the weighting information and / or the number of predefined inter-polarization weighting ratios and / or the number of predefined intra-polarization weighting arrays.

[0205] The weighting information includes inter-polarization weighting information and / or intra-polarization weighting information. For other contents of the weighting information, reference may be made to the description of (2) in case 1, which will not be repeated here.

[0206] (3) Codebook generation process:

[0207] The UL codebook is enhanced based on the UL codebook. The UL codebook considering the inter-polarization weighting and / or intra-polarization weighting needs to be calculated based on the codebook and weighting information selected by the BS to feed back to the UE.

[0208] Codebook enhancement includes three schemes: adding only inter-polarization weighting, adding only intra-polarization weighting, and adding both inter-polarization and intra-polarization weighting.

[0209] Alt 1: Only add polarization weighting. Alt 1 can be further divided into Alt 1-1 layers that do not share polarization weighting ratios, and Alt 1-2 layers that share polarization weighting ratios.

[0210] For Alt 1-1: The inter-polarization weighting ratio is not shared between layers. In this scheme, the inter-polarization weighting information corresponds to one (rank=1) or more (rank>1) inter-polarization weighting ratios. The number of inter-polarization weighting ratios is the same as the number of transmission layers, and one inter-polarization weighting ratio value corresponds to one transmission layer in sequence. When calculating the codebook, each inter-polarization weighting ratio corresponds to two inter-polarization weighting values ​​(for example, the inter-polarization weighting ratio value is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in a codebook vector of a transmission layer, an element corresponding to a polarization direction port is multiplied by one of the inter-polarization weighted values, and an element corresponding to another polarization direction port is multiplied by another inter-polarization weighted value, and then normalized.

[0211] After the codebook matrix is ​​determined according to the index of the codebook in the DCI, the elements corresponding to different polarization ports in the codebook matrix are multiplied by the corresponding inter-polarization weighted values ​​respectively, and then normalized.

[0212] For example, take the codebook of a 2-layer transmission 4-port dual-polarization transmitting antenna as an example, assuming that the inter-polarization weighted ratio is p 1 and p 2 , then one of the codebooks is:

[0213]

[0214] In this example, the first two rows of elements in the codebook matrix correspond to the same polarization direction, and the third and fourth rows correspond to another polarization direction. There may also be other correspondences, such as the first and third rows of elements correspond to the same polarization direction, and the second and fourth rows correspond to another polarization direction.

[0215] For Alt 1-2: the inter-polarization weighting ratio is shared between layers. In this scheme, the inter-polarization weighting information corresponds to an inter-polarization weighting ratio, and the inter-polarization weighting ratio can apply a codebook corresponding to a multiple of 2 transmission layers (for example, the codebook is a 4-layer codebook, 2 of which consider inter-polarization weighting or 4 of which consider inter-polarization weighting). When calculating the codebook, each inter-polarization weighting ratio corresponds to two inter-polarization weighting values ​​(for example, the inter-polarization weighting ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in the codebook vector of the first transmission layer, the element corresponding to the first polarization direction port is multiplied by the first inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the second inter-polarization weighted value. In the codebook vector of the second transmission layer, the element corresponding to the first polarization direction port is multiplied by the second inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the first inter-polarization weighted value. This process is repeated for subsequent layers. Finally, normalization is performed.

[0216] For example, take the codebook of a 2-layer transmission 4-port dual-polarization transmitting antenna as an example, assuming that the inter-polarization weighted ratio is p 1 , the final codebook is:

[0217]

[0218] Alt 2: Only add polarization intra-weighting. After the codebook matrix is ​​determined according to the codebook index in the DCI, the elements corresponding to the non-co-located ports in the codebook matrix are multiplied by the values ​​in the corresponding polarization intra-weighting array, and then normalized.

[0219] For example, take the codebook of a 2-layer transmission 4-port dual-polarization transmitting antenna as an example, assuming that the polarization weighting array is (q 1 ,q 2 ) and (q 3 ,q 4 ), then one of the codebooks is:

[0220]

[0221] Alt 3: Add both inter-polarization and intra-polarization weighting.

[0222] Alt 3-1: The polarization weighting ratio is not shared between layers.

[0223] The intra-polarization weighting information corresponds to one or more intra-polarization weighting arrays, the number of intra-polarization weighting arrays is the same as the number of transmission layers, and one intra-polarization weighting array corresponds to one transmission layer in sequence. After determining the codebook matrix according to the index of the codebook in the DCI, the elements corresponding to the non-co-located ports in the codebook matrix are multiplied by the values ​​in the corresponding intra-polarization weighting array.

[0224] The inter-polarization weighted information corresponds to one (rank=1) or more (rank>1) inter-polarization weighted ratios. The number of inter-polarization weighted ratios is the same as the number of transmission layers, and one inter-polarization weighted ratio value corresponds to one transmission layer in sequence. When calculating the codebook, each inter-polarization weighted ratio corresponds to two inter-polarization weighted values ​​(for example, the inter-polarization weighted ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in a codebook vector of a transmission layer, an element corresponding to a polarization direction port is multiplied by one of the inter-polarization weighted values, and an element corresponding to another polarization direction port is multiplied by another inter-polarization weighted value, and then normalized.

[0225] For example, take the codebook of a 2-layer transmission 4-port dual-polarization transmitting antenna as an example, assuming that the inter-polarization weighted ratio is p 1 and p 2 , the polarization weight array is (q 1 ,q 2 ) and (q 3 ,q 4 ), then one of the codebooks is:

[0226]

[0227] Alt 3-2: Inter-layer shared polarization weighting ratio.

[0228] The intra-polarization weighting information corresponds to one or more intra-polarization weighting arrays, the number of intra-polarization weighting arrays is the same as the number of transmission layers, and one intra-polarization weighting array corresponds to one transmission layer in sequence. After the codebook matrix is ​​determined according to the index of the codebook in TPMI, the elements corresponding to the non-co-addressed ports in the codebook matrix are multiplied by the values ​​in the corresponding intra-polarization weighting arrays.

[0229] The inter-polarization weighted information corresponds to an inter-polarization weighted ratio, and the inter-polarization weighted ratio may apply a codebook corresponding to a multiple of 2 transmission layers (for example, the codebook is a 4-layer codebook, 2 of which consider inter-polarization weighting or 4 of which consider inter-planar weighting). When calculating the codebook, each inter-polarization weighted ratio corresponds to two inter-polarization weighted values ​​(for example, the inter-polarization weighted ratio is p 1 , then the weight between the two polarizations is p 1 、(1-p 1 )), in the codebook vector of the first transmission layer, the element corresponding to the first polarization direction port is multiplied by the first inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the second inter-polarization weighted value. In the codebook vector of the second transmission layer, the element corresponding to the first polarization direction port is multiplied by the second inter-polarization weighted value, and the element corresponding to the second polarization direction port is multiplied by the first inter-polarization weighted value. This process is repeated for subsequent layers. Finally, normalization is performed.

[0230] For example, take the codebook of a 2-layer transmission 4-port dual-polarization transmitting antenna as an example, assuming that the inter-polarization weighted ratio is p 1 , the polarization weight array is (q 1 ,q 2 ) and (q 3 ,q 4 ), then one of the codebooks is:

[0231]

[0232] Case 4: Taking the first node as a UE, the second node as a BS, the first weighted information as inter-polarization weighted information, and the second weighted information as intra-polarization weighted information as an example, the UE obtains weighted information (including inter-polarization weighted information and / or intra-polarization weighted information), and generates an uplink (UL) codebook based on the weighted information.

[0233] Case 4 focuses on UL codebook enhancement. The BS configures a reference signal for the UE. This reference signal is dedicated to determining weighting information (including inter-polarization weighting and / or intra-polarization weighting). The UE sends the reference signal (SRS) to the BS. The BS selects weighting information (including inter-polarization weighting information and / or intra-polarization weighting information) by measuring the reference signal, and then feeds back the weighting information as part of the codebook information. After receiving the feedback information, the UE can generate an enhanced UL codebook. The specific process is as follows:

[0234] (1) Configurations:

[0235] The new usage indication parameter is optional. If this option is selected during configuration, it means that this reference signal is used to determine weighting information. If the parameter usage indication in the reference signal resource set (SRS-ResourceSet) corresponding to the reference signal sent by the UE to the BS is configured as a weighted measurement parameter, the UE selects the inter-polarization weighting ratio and / or the intra-polarization weighting array by measuring the reference signal sent by the BS, and feeds back the corresponding weighting information to the BS.

[0236] The weighted measurement parameter may be one of the following: a first weighted measurement feedback, a second weighted measurement feedback, or a third weighted measurement feedback.

[0237] When the weighted measurement parameter is the first weighted measurement parameter, the number of ports configured by the UE for the reference signal is two, and the reference signal is sent by two ports of different polarizations in the UE. The BS selects the inter-polarization weighted ratio by measuring the reference signal and feeds back the corresponding inter-polarization weighted information to the UE.

[0238] When the weighted measurement parameter is the second weighted measurement parameter, the number of ports configured by the UE for this reference signal is half of the total number of ports of the UE, and this reference signal is sent by the ports of the UE that are co-polarized but not co-located. The BS selects the intra-polarization weighting array by measuring this reference signal and feeds back the corresponding intra-polarization weighting information to the UE.

[0239] When the weighted measurement parameter is the third weighted measurement parameter, the BS selects an inter-polarization weighting ratio and an intra-polarization weighting array by measuring the reference signal, and feeds back corresponding inter-polarization weighting information and intra-polarization weighting information to the UE.

[0240] The new usage indication parameter may be configured by the BS to the UE via RRC or MAC CE or DCI signal.

[0241] (2) The weighted information determination process may refer to the weighted information determination process in (2) of case 1 and (2) of case 3 for details. No further details will be given here.

[0242] (3) Codebook generation process:

[0243] If the feedback information of the BS includes the measurement result, the UE first determines the inter-polarization weighted ratio and / or the intra-polarization weighted array according to the measurement result, and then generates a codebook according to the inter-polarization weighted ratio and / or the intra-polarization weighted array in combination with the codebook set in the protocol.

[0244] If the feedback information of the BS includes weighting information, the UE generates a codebook according to the inter-polarization weighting ratio or / and the intra-polarization weighting array fed back by the weighting information in combination with the codebook set in the protocol.

[0245] The method of generating a codebook by combining the inter-polarization weighting ratio and / or the intra-polarization weighting array and the codebook set in the protocol may refer to Alt 1-2, Alt 2, and Alt 3-2 in (3) of Case 3 for details, which will not be described in detail here.

[0246] Based on this, introducing weighted information in the codebook design can effectively reduce the impact caused by the inconsistency of received power in different polarization directions, while making full use of the polarization diversity gain and spatial diversity gain of the channel. In addition, the present disclosure also explores the specific method of how to generate a codebook based on these weighted information, providing a new idea and solution for the performance optimization of wireless communication systems. The implementation of this solution will help improve the reliability and stability of wireless communication systems, and significantly enhance their adaptability in complex propagation environments.

[0247] The present disclosure provides a channel information measurement feedback enhancement method, which is applied to a second node. Figure 5 As shown, the method comprises the following steps:

[0248] S201. Send weighted information.

[0249] The weighted information includes first weighted information and / or second weighted information.

[0250] In some embodiments, the first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

[0251] In some embodiments, the first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

[0252] In some embodiments, sending weighted information includes: measuring a reference signal sent by the first node to obtain feedback information, the feedback information including weighted information; and sending the feedback information.

[0253] In some embodiments, sending weighted information includes: measuring a reference signal to obtain feedback information, the feedback information including a reference signal receiving power corresponding to each port; sending the feedback information so that the first node determines the weighted information based on the feedback information.

[0254] In some embodiments, a first signaling is sent, where the first signaling is used to trigger the first node to perform measurement feedback on a reference signal.

[0255] In some embodiments, a second signaling is sent, where the second signaling is used to trigger the first node to send a reference signal.

[0256] In some embodiments, first configuration information is sent, and the first configuration information includes at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

[0257] In some embodiments, the first configuration information is carried by at least one of the following: radio resource control, medium access control control element, and control information.

[0258] In some embodiments, the weighting information is carried by at least one of the following: precoding matrix indication information, transmission precoding matrix indication information, control information, and measurement feedback information.

[0259] In some embodiments, second configuration information is sent, the second configuration information includes first indication information, and the first indication information is used to indicate feedback weighting information.

[0260] In some embodiments, the second configuration information further includes a weighting type.

[0261] In some embodiments, the feedback information also includes codebook information.

[0262] For a more detailed description of the above S201, a more detailed description of each technical feature therein, and a description of the beneficial effects, etc., please refer to the description in the above embodiments or examples, which will not be repeated here.

[0263] The above mainly introduces the scheme of the embodiment of the present disclosure from the perspective of the method. A communication device is also shown below for executing the channel information measurement feedback enhancement method in any of the above embodiments and possible implementations thereof. It can be understood that in order to implement the channel information measurement feedback enhancement method, the communication device includes a hardware structure and / or software module corresponding to each function; those skilled in the art should easily realize that, in combination with the algorithm steps of each example described in the embodiment of the present disclosure, the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the target application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each target application, but such implementation should not be considered to exceed the scope of the present disclosure.

[0264] The embodiments of the present disclosure may divide the functional modules of the communication device according to the above method embodiments. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one functional module. The above integrated modules may be implemented in the form of hardware or software. It should be noted that the division of modules in the embodiments of the present disclosure is schematic and is only a logical function division. There may be other division methods in actual implementation. The following is an example of dividing each functional module corresponding to each function.

[0265] Figure 6The communication device 30 provided in the embodiment of the present disclosure is applied to a first node. The communication device 30 includes: a communication module 31 and a processing module 32.

[0266] Wherein, the communication module 31 is used to obtain weighted information, and the weighted information includes first weighted information and / or second weighted information;

[0267] The processing module 32 is configured to generate a codebook based on the weighted information.

[0268] The first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

[0269] The first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

[0270] In some embodiments, the communication module 31 is specifically used to:

[0271] Sending a reference signal;

[0272] Feedback information obtained by the second node based on measuring the reference signal is received, where the feedback information includes weighting information.

[0273] In some embodiments, the communication module 31 is used to send a reference signal;

[0274] The communication module 31 is further configured to receive feedback information obtained by the second node based on measuring the reference signal, where the feedback information includes the reference signal receiving power corresponding to each port;

[0275] The processing module 32 is used to determine weighting information based on the feedback information.

[0276] In some embodiments, the communication module 31 is used to receive a first signaling, where the first signaling is used to trigger the first node to perform measurement feedback on the reference signal.

[0277] In some embodiments, the communication module 31 is used to receive a second signaling, where the second signaling is used to trigger the first node to send a reference signal.

[0278] In some embodiments, the communication module 31 is used to receive first configuration information, where the first configuration information includes at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

[0279] In some embodiments, the first configuration information is carried by at least one of the following: radio resource control, medium access control control element, and control information.

[0280] In some embodiments, the weighting information is carried by at least one of the following: precoding matrix indication information, transmission precoding matrix indication information, control information, and measurement feedback information.

[0281] In some embodiments, the first weighted information includes a first flag bit or a first information field;

[0282] The first flag bit is used to indicate whether to apply a predefined first weighting ratio or a first weighting ratio combination;

[0283] The first information field includes at least one first weighting ratio and / or at least one index of the first weighting ratio.

[0284] In some embodiments, the second weighted information includes a second flag bit or a second information field;

[0285] The second flag bit is used to indicate whether to apply a predefined first weighting array or a combination of first weighting arrays;

[0286] The second information field includes at least one first weighting array and / or at least one index of the first weighting array.

[0287] In some embodiments, when the codebook is determined at least based on the first weighted information, codebook elements of different transmission layers in the codebook are generated based on different first weighted information, and codebook elements corresponding to different ports in the same transmission layer in the codebook are generated based on the same first weighted information.

[0288] In some embodiments, in a transmission layer of the codebook, a codebook element corresponding to a first port is determined based on a first weighted value, and a codebook element corresponding to a second port is determined based on a second weighted value;

[0289] The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

[0290] In some embodiments, when the codebook is determined based on at least the first weighting information, codebook elements of different transmission layers in the codebook are generated based on the same first weighting information.

[0291] In some embodiments, a codebook element corresponding to a first port in a first transmission layer of a codebook is determined based on a first weighted value, and a codebook element corresponding to a second port in the first transmission layer is determined based on a second weighted value;

[0292] The codebook element corresponding to the first port in the second transmission layer of the codebook is determined based on the second weighted value, and the codebook element corresponding to the second port in the second transmission layer is determined based on the first weighted value;

[0293] The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

[0294] In some embodiments, the first transmission layer includes at least one transmission layer located at an odd position in the codebook, and the second transmission layer includes at least one transmission layer located at an even position in the codebook; or, the first transmission layer includes at least one transmission layer located at an even position in the codebook, and the second transmission layer includes at least one transmission layer located at an odd position in the codebook.

[0295] In some embodiments, the second weighting information corresponds to at least one first weighting array, the number of the first weighting arrays is the same as the number of the basis vectors, and one first weighting array corresponds to one basis vector in sequence;

[0296] In the case where the codebook is determined based on at least the second weighting information, the codebook is determined based on multiplying elements corresponding to different ports in the basis vector by values ​​in the first weighting array corresponding to the basis vector.

[0297] In some embodiments, when the codebook is determined based on at least the second weighting information, the codebook is determined based on multiplying the elements corresponding to the non-co-located ports in the codebook matrix by the corresponding values ​​in the first weighting array.

[0298] In some embodiments, the communication module 31 is used to receive second configuration information, where the second configuration information includes first indication information, and the first indication information is used to indicate feedback weighting information.

[0299] In some embodiments, the second configuration information further includes a weighting type.

[0300] In some embodiments, when the weighting type is a first weighting type, the indication weighting information includes first weighting information;

[0301] When the weighting type is the second weighting type, indicating that the weighting information includes the second weighting information;

[0302] When the weighting type is the third weighting type, it is indicated that the weighting information includes the first weighting information and the second weighting information.

[0303] In some embodiments, when the weighting type is a first weighting type, the reference signal is sent by two ports of different polarizations in the first node;

[0304] When the weighting type is the second weighting type, the reference signal is sent by a co-polarized port in the first node;

[0305] When the weighting type is the third weighting type, the reference signal is sent by all ports in the first node.

[0306] In some embodiments, the second configuration information is carried by at least one of the following: radio resource control, medium access control control element, and control information.

[0307] In some embodiments, the feedback information also includes codebook information.

[0308] In some embodiments, the parameter usage indication in the reference signal resource set corresponding to the reference signal is a second codebook configuration parameter or codebook.

[0309] In some embodiments, the parameter usage indication in the reference signal resource set corresponding to the reference signal is configured as a weighted measurement parameter.

[0310] In some embodiments, the weighted measurement parameter is a first weighted measurement parameter, the number of ports configured for the reference signal of the first node is two, the reference signal is sent by two ports of different polarizations in the first node, and the weighted information includes first weighted information;

[0311] The weighted measurement parameter is a second weighted measurement parameter, the number of ports configured by the first node for the reference signal is half of the total number of ports of the first node, the reference signal is sent by a co-polarized but non-co-located port of the first node, and the weighted information includes the second weighted information;

[0312] The weighted measurement parameter is a third weighted measurement parameter, and the weighted information includes first weighted information and second weighted information.

[0313] In some embodiments, the codebook is a normalized codebook.

[0314] For a more detailed description of the communication module 31 and the processing module 32, as well as a more detailed description of each technical feature therein and a description of the beneficial effects, etc., please refer to the corresponding method embodiment part above, which will not be repeated here.

[0315] Figure 7 The communication device 40 provided in the embodiment of the present disclosure is applied to a second node. The communication device 40 includes: a communication module 41 and a measurement module 42.

[0316] The communication module 41 is used to send weighted information, and the weighted information includes first weighted information and / or second weighted information.

[0317] In some embodiments, the first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

[0318] In some embodiments, the measurement module 42 is configured to measure a reference signal sent by the first node to obtain feedback information, where the feedback information includes weighted information;

[0319] The communication module 41 is used to send feedback information.

[0320] In some embodiments, the measurement module 42 is used to measure the reference signal to obtain feedback information, and the feedback information includes the reference signal receiving power corresponding to each port;

[0321] The communication module 41 is configured to send feedback information so that the first node determines weighting information based on the feedback information.

[0322] In some embodiments, the communication module 41 is used to send a first signaling, where the first signaling is used to trigger the first node to perform measurement feedback on the reference signal.

[0323] In some embodiments, the communication module 41 is used to send a second signaling, where the second signaling is used to trigger the first node to send a reference signal.

[0324] In some embodiments, the communication module 41 is used to send first configuration information, where the first configuration information includes at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

[0325] In some embodiments, the communication module 41 is used to send second configuration information, where the second configuration information includes first indication information, and the first indication information is used to indicate feedback weighting information.

[0326] For a more detailed description of the communication module 41 and the measurement module 42, as well as a more detailed description of each technical feature therein and a description of the beneficial effects, etc., please refer to the corresponding method embodiment part above, which will not be repeated here.

[0327] It should be noted that Figure 6 , Figure 7 The modules in the communication module may also be referred to as units. For example, the communication module may be referred to as a communication unit. Figure 6 , Figure 7 In the illustrated embodiment, the names of the modules may not be the names shown in the figure. For example, the communication module may also be called a sending module or a receiving module.

[0328] Figure 6 , Figure 7If the various units or modules in the embodiment are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the various embodiments of the present disclosure. The storage medium for storing computer software products includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program codes.

[0329] In the case of implementing the functions of the above-mentioned integrated modules in the form of hardware, the embodiment of the present disclosure also provides a possible structure of a communication device, which is used to execute the channel information measurement feedback enhancement method provided by the embodiment of the present disclosure. Figure 8 As shown, the communication device 500 includes: a communication interface 503, a processor 502 and a bus 504. Optionally, the communication device may further include a memory 501.

[0330] The processor 502 may be a processor that implements or executes various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may be a central processing unit, a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the embodiments of the present disclosure. The processor 502 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0331] The communication interface 503 is used to connect with other devices via a communication network, such as Ethernet, wireless access network, wireless local area network (WLAN), etc.

[0332] The memory 501 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0333] As a possible implementation, the memory 501 may exist independently of the processor 502, and the memory 501 may be connected to the processor 502 via a bus 504 for storing instructions or program codes. When the processor 502 calls and executes the instructions or program codes stored in the memory 501, the channel information measurement feedback enhancement method provided in the embodiment of the present disclosure can be implemented.

[0334] In another possible implementation, the memory 501 may also be integrated with the processor 502 .

[0335] The bus 504 may be an extended industry standard architecture (EISA) bus, etc. The bus 504 may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 8 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0336] Some embodiments of the present disclosure provide a computer-readable storage medium (e.g., a non-transitory computer-readable storage medium), which stores computer program instructions. When the computer program instructions are executed on a computer, the computer executes the channel information measurement feedback enhancement method as described in any of the above embodiments.

[0337] In an exemplary embodiment, the computer may be the above-mentioned communication device, and the present disclosure does not limit the specific form of the computer.

[0338] In some examples, the computer-readable storage media described above may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or tapes, etc.), optical disks (e.g., compact disks (CDs), digital versatile disks (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the present disclosure may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0339] An embodiment of the present disclosure provides a computer program product comprising instructions. When the computer program product is run on a computer, the computer is enabled to execute the channel information measurement feedback enhancement method described in any one of the above embodiments.

[0340] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A channel information measurement feedback enhancement method, characterized in that: Applied to the first node, the method comprises: Acquiring weighted information, where the weighted information includes first weighted information and / or second weighted information; A codebook is generated based on the weight information.

2. The method according to claim 1, characterized in that The first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

3. The method according to claim 1, characterized in that The obtaining of weighted information comprises: Sending a reference signal; Feedback information obtained by the second node based on measuring the reference signal is received, where the feedback information includes the weighting information.

4. The method according to claim 1, characterized in that The obtaining of weighted information comprises: Sending a reference signal; Receiving feedback information obtained by the second node based on measuring the reference signal, where the feedback information includes the reference signal receiving power corresponding to each port; The weighting information is determined based on the feedback information.

5. The method according to claim 3 or 4, characterized in that: The method further comprises: A first signaling is received, where the first signaling is used to trigger the first node to perform measurement feedback on the reference signal.

6. The method according to claim 3 or 4, characterized in that: The method further comprises: A second signaling is received, where the second signaling is used to trigger the first node to send the reference signal.

7. The method according to claim 3 or 4, characterized in that: The method further comprises: First configuration information is received, where the first configuration information includes at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

8. The method according to claim 7, characterized in that The first configuration information is carried by at least one of the following: radio resource control, medium access control control element, and control information.

9. The method according to claim 1, characterized in that: The weighting information is carried in at least one of the following: precoding matrix indication information, transmission precoding matrix indication information, control information, and measurement feedback information.

10. The method according to claim 2, characterized in that The first weighted information includes a first flag bit or a first information field; The first flag bit is used to indicate whether to apply a predefined first weighting ratio or a first weighting ratio combination; The first information field includes at least one first weighting ratio and / or at least one index of the first weighting ratio.

11. The method according to claim 2, characterized in that The second weighted information includes a second flag bit or a second information field; The second flag bit is used to indicate whether to apply a predefined first weighting array or a combination of first weighting arrays; The second information field includes at least one first weighting array and / or at least one index of the first weighting array.

12. The method according to claim 2, characterized in that: When the codebook is determined at least based on the first weighting information, codebook elements of different transmission layers in the codebook are generated based on different first weighting information, and codebook elements corresponding to different ports in the same transmission layer in the codebook are generated based on the same first weighting information.

13. The method according to claim 12, characterized in that In a transmission layer of the codebook, a codebook element corresponding to a first port is determined based on a first weighted value, and a codebook element corresponding to a second port is determined based on a second weighted value; The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

14. The method according to claim 2, characterized in that In a case where the codebook is determined based on at least the first weighting information, codebook elements of different transmission layers in the codebook are generated based on the same first weighting information.

15. The method according to claim 14, characterized in that A codebook element corresponding to a first port in a first transmission layer of the codebook is determined based on a first weighted value, and a codebook element corresponding to a second port in the first transmission layer is determined based on a second weighted value; The codebook element corresponding to the first port in the second transmission layer of the codebook is determined based on the second weighted value, and the codebook element corresponding to the second port in the second transmission layer is determined based on the first weighted value; The first weighted value and the second weighted value are determined based on a first weighted ratio corresponding to the first weighted information.

16. The method according to claim 15, characterized in that The first transmission layer includes at least one transmission layer located at an odd position in the codebook, and the second transmission layer includes at least one transmission layer located at an even position in the codebook; or, the first transmission layer includes at least one transmission layer located at an even position in the codebook, and the second transmission layer includes at least one transmission layer located at an odd position in the codebook.

17. The method according to claim 2, characterized in that The second weighting information corresponds to at least one first weighting array, the number of the first weighting arrays is the same as the number of basis vectors, and one first weighting array corresponds to one basis vector in sequence; In the case where the codebook is determined based on at least the second weighting information, the codebook is determined based on multiplying elements corresponding to different ports in a basic vector by values ​​in a first weighting array corresponding to the basic vector.

18. The method according to claim 2, characterized in that In the case where the codebook is determined based on at least the second weighting information, the codebook is determined by multiplying elements corresponding to non-co-located ports in a codebook matrix by values ​​in a corresponding first weighting array, respectively.

19. The method according to claim 3 or 4, characterized in that: The method further comprises: Second configuration information is received, where the second configuration information includes first indication information, where the first indication information is used to indicate that the weighted information is fed back.

20. The method according to claim 19, characterized in that The second configuration information also includes a weighting type.

21. The method according to claim 20, characterized in that When the weighting type is a first weighting type, indicating that the weighting information includes the first weighting information; When the weighting type is the second weighting type, indicating that the weighting information includes the second weighting information; When the weighting type is the third weighting type, it is indicated that the weighting information includes the first weighting information and the second weighting information.

22. The method according to claim 20, characterized in that When the weighting type is a first weighting type, the reference signal is sent by two ports of different polarizations in the first node; When the weighting type is the second weighting type, the reference signal is sent by a co-polarized port in the first node; When the weighting type is the third weighting type, the reference signal is sent by all ports in the first node.

23. The method according to claim 19, characterized in that The second configuration information is carried by at least one of the following: radio resource control, medium access control control element, and control information.

24. The method according to claim 3, characterized in that The feedback information also includes codebook information.

25. The method according to claim 24, characterized in that The parameter usage indication in the reference signal resource set corresponding to the reference signal is a second codebook configuration parameter or a codebook.

26. The method according to claim 3 or 4, characterized in that The parameter usage indication in the reference signal resource set corresponding to the reference signal is configured as a weighted measurement parameter.

27. The method according to claim 26, characterized in that The weighted measurement parameter is a first weighted measurement parameter, the number of ports configured by the first node for the reference signal is two, the reference signal is sent by two ports of different polarizations in the first node, and the weighted information includes the first weighted information; The weighted measurement parameter is a second weighted measurement parameter, the number of ports configured by the first node for the reference signal is half of the total number of ports of the first node, the reference signal is sent by a co-polarized but non-co-located port of the first node, and the weighted information includes second weighted information; The weighted measurement parameter is a third weighted measurement parameter, and the weighted information includes first weighted information and second weighted information.

28. The method according to claim 1, characterized in that The codebook is a normalized codebook.

29. A channel information measurement feedback enhancement method, characterized in that: Applied to the second node, the method comprises: The weighting information is sent, where the weighting information includes the first weighting information and / or the second weighting information.

30. The method according to claim 29, characterized in that The first weighting information is inter-polarization weighting information, and the second weighting information is intra-polarization weighting information.

31. The method according to claim 29, characterized in that The sending weighted information includes: measuring a reference signal sent by the first node to obtain feedback information, where the feedback information includes the weighted information; The feedback information is sent.

32. The method according to claim 29, characterized in that The sending weighted information includes: Measuring a reference signal to obtain feedback information, wherein the feedback information includes a reference signal receiving power corresponding to each port; The feedback information is sent so that the first node determines the weighting information based on the feedback information.

33. The method according to claim 31 or 32, characterized in that The method further comprises: Sending a first signaling, where the first signaling is used to trigger the first node to perform measurement feedback on the reference signal.

34. The method according to claim 31 or 32, characterized in that The method further comprises: Sending second signaling, where the second signaling is used to trigger the first node to send the reference signal.

35. The method according to claim 31 or 32, characterized in that The method further comprises: First configuration information is sent, where the first configuration information includes at least one of the following: a first codebook configuration parameter, a type one single-panel codebook, and a type one multi-panel codebook.

36. The method according to claim 31 or 32, characterized in that The method further comprises: Second configuration information is sent, where the second configuration information includes first indication information, and the first indication information is used to indicate feedback of the weighted information.

37. A communication device, characterized in that: include: Memory and processor; Memory and processor coupling; The memory is used to store instructions executable by the processor; When the processor executes the instructions, the method according to any one of claims 1 to 36 is performed.

38. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a communication device, the communication device is caused to perform the method according to any one of claims 1 to 36.

39. A computer program product, characterized in that When the computer program product is executed, the method according to any one of claims 1 to 36 is implemented.

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