Feedback method and device for beam information and configuration information

Abstract

The present invention provides a method and device for feedback of beam information and configuration information, wherein the method comprises: a receiving end receives a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; the receiving end obtains a beam sequence number and channel state information according to the reference signal; the receiving end sends a set including the beam sequence number and channel state information to the transmitting end. Therefore, the technical solution of the present invention solves the problem that the receiving end cannot provide feedback on the correlation characteristics between beams, and the transmitting end cannot perform accurate and flexible data transmission according to the correlation characteristics of the receiving end, thereby reducing the diversity and multiplexing gain of the system, and improves the effect of the diversity and multiplexing gain of the system.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201710184863.2", application date "March 24, 2017", and title "Method and device for feedback of beam information and configuration information". Technical Field

[0002] The present invention relates to the field of communications, and in particular to a method and device for feeding back beam information and configuration information. Background Art

[0003] Ultra-wide bandwidth high-frequency bands, or millimeter-wave communications, have become a key development direction for future mobile communications, attracting the attention of academia and industry worldwide. In particular, given the increasing congestion of spectrum resources and the massive access to physical networks, the advantages of millimeter waves are becoming increasingly attractive. Many standards organizations, such as the IEEE and 3GPP, have begun standardization work. For example, within the 3GPP standards group, high-frequency band communications, with their significant bandwidth advantages, will become a key innovation in 5G's new radio access technology (New RAT).

[0004] However, high-frequency communications also face link attenuation challenges, such as high propagation path loss, strong air absorption (especially oxygen), and significant rain fade. To address these issues, high-frequency communication systems can leverage the shorter wavelengths and ease of antenna integration in high-frequency bands. Using multi-antenna arrays and beamforming schemes, they achieve high antenna gain and mitigate signal transmission loss, thereby ensuring link margin and improving communication robustness.

[0005] During antenna weight training (also known as precoding and beamforming), the high-band transmitter sends training pilots, and the receiver listens to the channel and performs channel estimation. The high-band receiver then feeds back channel state information to the training transmitter, enabling the transmitter to identify the appropriate antenna weight pairs for multi-path data transmission, improving overall spectral efficiency.

[0006] In existing millimeter wave communication systems, beam-related information feeds back the beam numbers and channel qualities of multiple optimal channel qualities to generate corresponding beam pairs for data transmission. However, when multiple beam pairs need to be generated to obtain spatial diversity or multiplexing gain, the multiple beam pairs provided by the existing feedback scheme may come from the same physical path and have very strong correlation characteristics. For example, when the optimal beam pair is selected to transmit data and is blocked, the suboptimal beam pair of the existing method has a high probability of being blocked because of its high correlation with the optimal beam, that is, it is impossible to effectively obtain diversity gain. Therefore, in related technologies, since the receiving end cannot obtain the beam number and channel state information based on the feedback from the transmitting end, the receiving end cannot provide feedback on the correlation characteristics between the beams, and then the transmitting end cannot perform accurate and flexible data transmission based on the correlation characteristics of the receiving end, thereby reducing the diversity and multiplexing gain of the system.

[0007] To address the above problems, no effective solutions have been proposed in the relevant technologies. Summary of the Invention

[0008] An embodiment of the present invention provides a method and device for feedback of beam information and configuration information, so as to at least solve the problem in related technologies that the receiving end is unable to provide feedback on the correlation characteristics between beams, resulting in the transmitting end being unable to perform accurate and flexible data transmission according to the correlation characteristics of the receiving end, thereby reducing the diversity and multiplexing gain of the system.

[0009] According to one embodiment of the present invention, a beam information feedback method is provided, including: a receiving end receiving a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; the receiving end obtains a beam number and channel state information according to the reference signal; and the receiving end sends a set including the beam number and the channel state information to the transmitting end.

[0010] Optionally, the set includes Q groups, where Q is an integer greater than or equal to 1; each of the groups includes at least one of the following: the beam sequence number, the channel state information, group information, and a set of spatial parameter information.

[0011] Optionally, the beam number includes at least one of the following: a transmitting beam number and a receiving beam number; the channel state information includes at least one of the following: transmitting beam channel state information, receiving beam channel state information, and channel state information of a transmitting beam and a receiving beam combination; the spatial parameter information set includes at least one of the following: a transmitting beam spatial parameter information set, a receiving beam spatial parameter information set, and a spatial parameter information set of a transmitting beam and a receiving beam combination.

[0012] Optionally, the group information is one of the following information: a group sequence number; a reference beam sequence number; a reference quasi co-location (QCL) index.

[0013] Optionally, the receiving end selects the beam according to at least one of the following criteria: maximizing a receiving end signal-to-noise ratio; maximizing a receiving end signal-to-interference-plus-noise ratio; maximizing a received signal strength; or maximizing a received signal quality.

[0014] Optionally, the channel characteristics and / or transmission schemes of the multiple groups with the same group information meet at least one of the following conditions: the transmission scheme is the same; the channel characteristics are the same; the channel characteristics are quasi-identical, wherein the quasi-identical channel characteristics means that the differences between the channel characteristics are within a specified range or constraint, and the range or constraint is determined by dynamic configuration or pre-setting.

[0015] Optionally, the group information is transmitted in one of the following ways: a time-frequency code resource carrying the group information; or outputting the group information explicitly.

[0016] Optionally, each of the groups further includes an end symbol, wherein the end symbol is located at the end position of the group and / or the end position of the set.

[0017] Optionally, the terminator is transmitted in one of the following ways: carrying the time-frequency code resources of the group information; limiting the number of the packets and the sets sent by the receiving end using periodic or semi-periodic feedback in each period to 1; limiting the number of the packets and the sets sent by the receiving end using periodic or semi-periodic feedback under non-periodic triggering to 1; explicitly outputting the terminator marked with a specific numerical value or a numerical value of the valid range of the non-feedback signal.

[0018] Optionally, the spatial parameter information set includes at least one of the following: arrival angle; lobe width; optimal receiving angle of the receiving beam; sub-band channel estimation; average delay; spatial correlation coefficient; time domain channel response correlation coefficient; frequency domain channel response correlation coefficient.

[0019] Optionally, the receiving end groups or sets the group information in one of the following ways: grouping without a reference beam; grouping based on a reference beam; wherein the transmitting end notifies the receiving end of the reference beam through QCL information, virtual cell number or physical cell number.

[0020] Optionally, the set also includes: a reference beam number, wherein the reference beam number is at least one of the following: the beam number of the receiving end feedback report, the reference signal number, the antenna port, the QCL assumption number, the virtual cell number, and the physical cell number.

[0021] Optionally, the receiving end obtains the reference beam sequence number by mapping the group information in the set.

[0022] Optionally, the transmitting end performs group merging on the Q packets to generate R packets, where R is an integer and 1≤R≤Q.

[0023] Optionally, the rth group under the Q groups contains Vr subgroups, where Vr is an integer greater than or equal to 1, r is an integer, and 1≤r≤Q;

[0024] The Q groups are called first-class groups; the Vr subgroups are called second-class groups;

[0025] Optionally, the grouping criteria of the first type of grouping is different from the grouping criteria of the second type of grouping.

[0026] Optionally, the beams indicated by the elements in each group under the first type of grouping are quasi-co-located; or,

[0027] The beams indicated by the elements in each group under the second type of grouping are quasi-co-located; or,

[0028] The beams indicated by the elements belonging to the same group under the first type of grouping and the same group under the second type of grouping are quasi co-located.

[0029] Optionally, beams indicated by elements belonging to different groups under the first category of groups and the same group under the second category of groups are used for spatial division multiplexing; or,

[0030] The beams indicated by the elements of different groups belonging to the first category of groups and different groups belonging to the second category of groups cannot be used for spatial division multiplexing but can be received and / or transmitted simultaneously; or,

[0031] Beams indicated by elements belonging to the same group under the first category of grouping and different groups under the second category of grouping are used for spatial division multiplexing; or

[0032] The beams indicated by the elements of the same group belonging to the first category of grouping and the same group belonging to the second category of grouping cannot be used for spatial division multiplexing but can be received and / or transmitted simultaneously.

[0033] Optionally, the elements are from different groups under Category A;

[0034] The Class A group includes G groups, which are configured by the sending end to the receiving end; wherein G is an integer greater than or equal to 1 and less than or equal to E, and E is an integer greater than or equal to 1, and is configured by the sending end to the receiving end.

[0035] Optionally, under the said type A grouping, beams indicated by elements in the same group cannot be sent at the same time; or, beams indicated by elements in different groups can be sent at the same time.

[0036] Optionally, the set further includes: T groups marked in the Q groups, and the number of antenna ports of the T groups, where T is an integer and 1≤T≤Q.

[0037] Optionally, the spatial parameters in the spatial parameter information set are obtained in one of the following ways: obtaining the spatial parameters based on the received reference signal; obtaining the spatial parameters based on the relative value of the first spatial parameter corresponding to the reference beam and the second spatial parameter of the received reference signal.

[0038] Optionally, the set further includes one of the following information: a frequency domain response phase difference between beams corresponding to the beam numbers; and a sub-band response phase difference between beams corresponding to the beam numbers.

[0039] Optionally, after the receiving end sends the set of the beam sequence number and the channel state information to the transmitting end, the method further includes: the receiving end sending set information of the set to the transmitting end, wherein the set information includes at least one of the following: the panel where each of the groups is located, one or more of the groups sharing a panel, the antenna port where each of the groups is located, one or more of the groups sharing an antenna port, the group of sharable frequency domain resource blocks, the group of sharable time domain resource blocks, and the optimal beam in each of the groups;

[0040] Optionally, before the receiving end receives the reference signal sent by the transmitting end, the method further includes: the receiving end receiving a report format combination of the set sent by the transmitting end, wherein the report format combination is used to indicate the format of the set sent by the receiving end.

[0041] Optionally, the receiving end sends a report format request to the sending end, wherein the report format request is used to instruct the sending end to allocate time-frequency resources for feedback.

[0042] Optionally, the reporting format combination includes at least one of the following information: optional subband bandwidth in the subband channel state information, optional format of the set, number or maximum number of groups in the set, optional channel state information; optional grouping criteria of the set, optional configuration criteria of the beam number and the grouping number of the channel state information.

[0043] According to another embodiment of the present invention, a configuration information feedback method is provided, comprising: a receiving end sending antenna and beam configuration information to a transmitting end, wherein the configuration information is used to instruct the transmitting end to configure the antenna and beam of the transmitting end.

[0044] Optionally, the configuration information includes at least one of the following information: the number of antenna panels; the number of transceiver units (TXRU) under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space supported; and support for feedback of beam sequence number and channel state information based on a reference beam.

[0045] Optionally, there are one or more antenna panels.

[0046] According to another embodiment of the present invention, a beam information feedback device is provided, including: a first receiving module, used to receive a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; an acquisition module, used to obtain a beam number and channel state information according to the reference signal; a first sending module, used to send a set including the beam number and the channel state information to the transmitting end.

[0047] Optionally, the set includes Q groups, where Q is an integer greater than or equal to 1; each of the groups includes at least one of the following: the beam sequence number, the channel state information, group information, and a set of spatial parameter information.

[0048] Optionally, the beam number includes at least one of the following: a transmitting beam number and a receiving beam number; the channel state information includes at least one of the following: transmitting beam channel state information, receiving beam channel state information, and channel state information of a transmitting beam and a receiving beam combination; the spatial parameter information set includes at least one of the following: a transmitting beam spatial parameter information set, a receiving beam spatial parameter information set, and a spatial parameter information set of a transmitting beam and a receiving beam combination.

[0049] Optionally, the device further includes: a second receiving module, configured to receive a report format combination of the set sent by the sending end, wherein the report format combination is used to indicate a format in which the receiving end sends the set.

[0050] Optionally, the device further includes a second sending module, configured to send a report format request to the sending end, wherein the report format request is used to instruct the sending end to allocate time-frequency resources for feedback.

[0051] According to another embodiment of the present invention, a configuration information feedback device is provided, comprising:

[0052] The sending module is used to send the configuration information of the antenna and beam to the sending end, wherein the configuration information is used to instruct the sending end to configure the antenna and beam of the sending end.

[0053] Optionally, the configuration information includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space that can be supported; and support for feedback of beam sequence number and channel state information based on a reference beam.

[0054] According to another embodiment of the present invention, a receiving end is provided, comprising a communication device and a processor, wherein the communication device is configured to receive a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; and a set including a beam sequence number and channel state information is sent to the transmitting end; and the processor is configured to obtain the set based on the reference signal.

[0055] Optionally, the set includes Q groups, where Q is an integer greater than or equal to 1; each of the groups includes at least one of the following: the beam sequence number, the channel state information, group information, and a set of spatial parameter information.

[0056] According to another embodiment of the present invention, a receiving end is provided, comprising a communication device for sending configuration information of an antenna and a beam to a transmitting end, wherein the configuration information is used to instruct the transmitting end to configure the antenna and the beam of the transmitting end.

[0057] Optionally, the configuration information includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space that can be supported; and support for feedback of beam sequence number and channel state information based on a reference beam.

[0058] According to another embodiment of the present invention, a storage medium is provided. The storage medium is configured to store program code for executing the following steps: a receiving end receives a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; the receiving end obtains a beam number and channel state information based on the reference signal; and the receiving end sends a set including the beam number and the channel state information to the transmitting end.

[0059] Optionally, the storage medium is further configured to store program code for executing the following steps: the receiving end selects the beam according to at least one of the following criteria: maximizing the receiving end signal-to-noise ratio; maximizing the receiving end signal-to-interference-plus-noise ratio; maximizing the received signal strength; maximizing the received signal quality.

[0060] Optionally, the storage medium is further configured to store program codes for executing the following steps: the group information is transmitted in one of the following ways: a time-frequency code resource carrying the group information; or the group information is outputted in a displayed manner.

[0061] Optionally, the storage medium is also configured to store program code for performing the following steps: the receiving end groups or sets the group information in one of the following ways: grouping without a reference beam; grouping based on a reference beam; wherein the transmitting end notifies the receiving end of the reference beam through QCL information, virtual cell number or physical cell number.

[0062] Optionally, the storage medium is further configured to store program codes for executing the following steps: the receiving end obtains the reference beam sequence number in the set by mapping the group information.

[0063] Optionally, the storage medium is further configured to store program codes for executing the following steps: the transmitting end performs group merging on the Q packets to generate R packets, where R is an integer and 1≤R≤Q.

[0064] Optionally, the storage medium is also configured to store program code for performing the following steps: the spatial parameters in the spatial parameter information set are obtained in one of the following ways: obtaining the spatial parameters based on the received reference signal; obtaining the spatial parameters based on the relative value of the first spatial parameter corresponding to the reference beam and the second spatial parameter of the received reference signal.

[0065] Optionally, the storage medium is also configured to store program code for performing the following steps: the receiving end sends the collection information of the collection to the transmitting end, wherein the collection information includes at least one of the following: the panel where each of the groups is located, one or more of the groups sharing the panel, the antenna port where each of the groups is located, one or more of the groups sharing the antenna port, the groups of sharable frequency domain resource blocks, the groups of sharable time domain resource blocks, and the optimal beam in each of the groups.

[0066] Optionally, the storage medium is further configured to store program code for executing the following steps: the receiving end receives the report format combination of the set sent by the sending end, wherein the report format combination is used to indicate the format of the set sent by the receiving end.

[0067] Optionally, the storage medium is further configured to store program code for executing the following steps: the receiving end sends a report format request to the sending end, wherein the report format request is used to instruct the sending end to allocate time-frequency resources for feedback.

[0068] According to another embodiment of the present invention, a storage medium is provided. The storage medium is configured to store program code for executing the following steps: a receiving end sends antenna and beam configuration information to a transmitting end, wherein the configuration information is used to instruct the transmitting end to configure the antenna and beam of the transmitting end.

[0069] Through the present invention, since the receiving end receives the reference signal sent by the transmitting end and obtains the beam number and channel state information based on the reference signal, and then feeds back the set containing the beam number and channel state information to the transmitting end, the feedback of the beam and channel state information by the receiving end is realized. Therefore, the problem that the receiving end cannot obtain the beam number and channel state information based on the feedback from the transmitting end, resulting in the receiving end being unable to feedback the correlation characteristics between the beams, and then the transmitting end is unable to perform accurate and flexible data transmission based on the correlation characteristics of the receiving end, thereby reducing the diversity and multiplexing gain of the system is solved. The transmitting end can perform accurate and flexible data transmission based on the correlation characteristics of the receiving end, thereby improving the diversity and multiplexing gain of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0071] Figure 1 4 is a hardware structure block diagram of a mobile terminal according to an embodiment of the present invention;

[0072] Figure 2 is a flowchart of a beam information feedback method according to an embodiment of the present invention;

[0073] Figure 3 is a flowchart of a method for feeding back configuration information according to an embodiment of the present invention;

[0074] Figure 4 2 is a schematic diagram of the structure of a hybrid precoding transceiver according to an optional embodiment of the present invention;

[0075] Figure 5 A schematic diagram of a transmitting end beam, a receiving end beam, and a propagation channel according to an optional embodiment of the present invention;

[0076] Figure 6 Schematic diagram of a beam scanning set according to an optional embodiment of the present invention (I);

[0077] Figure 7 Schematic diagram of a beam scanning set according to an optional embodiment of the present invention (II);

[0078] Figure 8 Flowchart (1) of a beam information feedback method according to an optional embodiment of the present invention;

[0079] Figure 9 Flowchart (II) of a beam information feedback method according to an optional embodiment of the present invention;

[0080] Figure 10 is a structural block diagram of a device for feedback of beam information according to an embodiment of the present invention;

[0081] Figure 11 1 is a structural block diagram of a beam information feedback device according to an optional embodiment of the present invention (I);

[0082] Figure 12 2 is a structural block diagram of a beam information feedback device according to an optional embodiment of the present invention;

[0083] Figure 13 4 is a structural block diagram of a device for feeding back configuration information according to an embodiment of the present invention. DETAILED DESCRIPTION

[0084] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0085] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0086] Example 1

[0087] The method embodiment provided in the first embodiment of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 FIG is a hardware structure block diagram of a mobile terminal of the beam information feedback method according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal 10 may include one or more (only one is shown in the figure) processors 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission device 106 for communication functions. It will be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components than shown, or with Figure 1 Different configurations shown.

[0088] The memory 104 can be used to store software programs and modules of application software, such as the program instructions / modules corresponding to the beam information feedback method in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the software programs and modules stored in the memory 104, thereby implementing the above-mentioned method. The memory 104 may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories may be connected to the mobile terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0089] The transmission device 106 is configured to receive or transmit data via a network. A specific example of the aforementioned network may include a wireless network provided by the telecommunications provider of the mobile terminal 10. In one embodiment, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to enable communication with the Internet. In another embodiment, the transmission device 106 may be a radio frequency (RF) module, which is configured to communicate with the Internet wirelessly.

[0090] Figure 2 FIG. 1 is a flow chart of a method for feeding back beam information according to an embodiment of the present invention. Figure 2 As shown, the process includes the following steps:

[0091] Step S202: The receiving end receives a reference signal sent by the transmitting end, where the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources;

[0092] Step S204: The receiving end obtains the beam sequence number and channel state information according to the reference signal;

[0093] In step S206, the receiving end sends the set including the beam sequence number and channel state information to the transmitting end.

[0094] In this embodiment, the beam number corresponds to an antenna port number, a resource number, or a sequence number, but is not limited thereto. The beam is a resource, such as transmitting end precoding, receiving end precoding, antenna port, antenna weight vector, and antenna weight matrix. The beam number can be replaced by a resource index because the beam can be bound to some time-frequency code resources for transmission. The beam can also be a transmission (such as sending or receiving) mode. The transmission mode may include spatial division multiplexing, frequency domain / time domain diversity, etc. The channel state information includes precoding matrix indicator (PMI), channel quality indicator (CQI), reference signal receiving power (RSRP), and reference signal receiving quality (RSRQ).

[0095] Through the above steps, since the receiving end receives the reference signal sent by the transmitting end and obtains the beam number and channel state information based on the reference signal, and then feeds back the set containing the beam number and channel state information to the transmitting end, the receiving end can feedback the beam and channel state information. Therefore, the problem that the receiving end cannot obtain the beam number and channel state information based on the feedback from the transmitting end, resulting in the receiving end being unable to feedback the correlation characteristics between the beams, and then the transmitting end is unable to perform accurate and flexible data transmission based on the correlation characteristics of the receiving end, thereby reducing the diversity and multiplexing gain of the system is solved. The transmitting end can perform accurate and flexible data transmission based on the correlation characteristics of the receiving end, thereby improving the diversity and multiplexing gain of the system.

[0096] Optionally, the execution entity of the above steps may be a base station or a terminal, etc., but is not limited thereto.

[0097] In an optional embodiment, the above-mentioned set includes Q groups, where Q is an integer greater than or equal to 1; each group includes at least one of the following: a beam sequence number, channel state information, group information, and a spatial parameter information set.

[0098] In this embodiment, each group includes one or more of the following information: beam number, channel state information, group information, and spatial parameter information set, but the above set includes the beam number and channel state information. Grouping the above set may refer to dividing beams with the same channel characteristics and / or transmission scheme and related channel state information into a group, wherein the channel characteristics include both physical propagation channel characteristics, such as horizontal transmission azimuth, vertical transmission azimuth, horizontal reception azimuth, vertical reception azimuth, etc., as well as RF and baseband circuit characteristics, such as antenna array characteristics, antenna placement, and baseband time offset, frequency offset, and phase noise.

[0099] The grouping criteria include at least one of the following:

[0100] Grouping based on received signal power;

[0101] Grouping based on horizontal transmission azimuth;

[0102] Grouping based on vertical transmission azimuth;

[0103] Grouping based on horizontal receiving azimuth;

[0104] Grouping based on vertical receiving azimuth;

[0105] Grouping by average arrival time;

[0106] Grouping based on cluster arrival time;

[0107] Group resources according to their corresponding receiving resources;

[0108] Grouping according to a predetermined multiplexing method;

[0109] Grouping based on the Timing Advance (TA) parameter;

[0110] Grouping based on the length of the cyclic prefix (CP);

[0111] Grouping according to space division multiplexing method;

[0112] The groups are grouped according to the QCL relationship; however, the embodiment of the present invention is not limited to the above grouping criteria, and the groups can be called sets.

[0113] In an optional embodiment, the above-mentioned beam number includes at least one of the following: a transmitting beam number and a receiving beam number; the above-mentioned channel state information includes at least one of the following: transmitting beam channel state information, receiving beam channel state information, and channel state information of a transmitting beam and a receiving beam combination; the above-mentioned spatial parameter information set includes at least one of the following: a transmitting beam spatial parameter information set, a receiving beam spatial parameter information set, and a spatial parameter information set of a transmitting beam and a receiving beam combination.

[0114] In this embodiment, the receiving beam is a beam of the receiving end that does not require indication, or the beam resource of the receiving end indicated by the reference signal (or reference signal) reported by the transmitting end through the current reference signal and the QCL of the antenna port and the feedback of the receiving end and the QCL of the antenna port.

[0115] Optionally, the grouped sets can be carried through the uplink shared channel (PUSCH). The receiving end can feedback the channel correlation characteristics between beams to the transmitting end through explicit spatial parameters or implicit beam grouping feedback methods. The reporting format of the grouped sets is as follows:

[0116] Scheme 1 includes N groups, each of which contains a group number and one or more transmit beam numbers. The channel state information of the best beam among the transmit beams is fed back. The number of transmit beams in each group can be different. The report format is: {group number, {transmit beam number, ..., transmit beam number}, channel state information of the best beam}, as shown in Table 1:

[0117] Table 1

[0118]

[0119]

[0120] Solution 2 includes N groups, each of which contains a receive beam number (or a virtual receive beam number, quasi-receive beam number). Each receive beam feeds back K transmit beams, and the number of receive beams is M. The report format is:

[0121] {{transmit beam number, channel state information},…,{transmit beam number, channel state information}}…, wherein the above report format contains K {transmit beam number, channel state information}, as shown in Table 2:

[0122] Table 2

[0123]

[0124] Solution 3, report format: {transmit beam number, channel state information, group number}, ...; where the group number can be distinguished by time domain, frequency domain, or code domain. The criterion for grouping K transmit beams into a group is that the K transmit beams correspond to one receive beam or one beamforming implementation mode. Group numbers are sorted in ascending order starting from 0. See Table 3:

[0125] Table 3

[0126]

[0127]

[0128] Based on the grouping in Scheme 3, existing groups are grouped one level higher, depending on whether they correspond to the same TXRU or antenna panel. A higher-level main group sequence number is added, with the format shown in Table 4. The top-level grouping criterion groups information corresponding to the same TXRU or antenna panel; while the bottom-level grouping criterion groups information corresponding to the same receive beam or reception mode under the same TXRU or antenna panel. The bottom-level group is a subset of the top-level group. Optionally, all group sequence numbers can be implicitly represented, such as the location of the time-frequency resources occupied by the group information involved in the group sequence number.

[0129] Table 4

[0130]

[0131] Optionally, higher level grouping (greater than or equal to 3 layers) is allowed, characterized in that the information contained in the lower level grouping is a subset of the information described in the higher level grouping.

[0132] Solution 4, report format: {transmit beam number, channel state information, spatial parameter information set}, ...; group numbers can be distinguished by the radio frequency resources in use, as shown in Table 5:

[0133] Table 5

[0134]

[0135] In an optional embodiment, the above-mentioned group information is one of the following information: group sequence number; reference beam sequence number; reference QCL index.

[0136] In an optional embodiment, the receiving end selects the beam according to at least one of the following criteria: maximizing the receiving end signal-to-noise ratio; maximizing the receiving end signal-to-interference-plus-noise ratio; maximizing the received signal strength; and maximizing the received signal quality.

[0137] In this embodiment, the beam is selected more accurately according to the above criteria.

[0138] In an optional embodiment, the channel characteristics and / or transmission schemes of the multiple groups with the same group information meet at least one of the following conditions: the transmission scheme is the same; the channel characteristics are the same; the channel characteristics are quasi-identical, wherein the quasi-identical channel characteristics means that the differences between the channel characteristics are within a specified range or constraint, and the range or constraint is determined by dynamic configuration or pre-setting.

[0139] In this embodiment, the same group information can mean that at least one of the following parameters is the same: received signal power, horizontal transmission azimuth, vertical transmission azimuth, horizontal receiving azimuth, vertical receiving azimuth, average arrival time, cluster arrival time, predetermined multiplexing mode, TA parameter, CP length, space division multiplexing mode and QCL relationship.

[0140] In an optional embodiment, the above-mentioned group information is transmitted through one of the following ways: time-frequency code resources carrying the group information; and displaying the group information.

[0141] In an optional embodiment, each group further includes an end symbol, wherein the end symbol is located at the end position of the group and / or the end position of the set.

[0142] In an optional embodiment, the above-mentioned terminator is transmitted in one of the following ways: time-frequency code resources that carry group information; limiting the number of packets and sets sent by a receiving end that adopts periodic or semi-periodic feedback in each period to 1; limiting the number of packets and sets sent by a receiving end that adopts periodic or semi-periodic feedback under non-periodic triggering to 1; explicitly outputting a terminator marked with a specific numerical value or a numerical value of the valid range of a non-feedback signal.

[0143] In an optional embodiment, the above-mentioned spatial parameter information set includes at least one of the following: arrival angle; beam width; optimal receiving angle of the receiving beam; sub-band channel estimation; average delay; spatial correlation coefficient; time domain channel response correlation coefficient; frequency domain channel response correlation coefficient.

[0144] In this embodiment, the above-mentioned arrival angle may include a horizontal arrival angle and a vertical arrival angle; the above-mentioned beam width refers to the beam width of a specific attenuation under a maximum beam gain not greater than the maximum beam gain, such as the half-power beam width; the optimal receiving angle of the above-mentioned receiving beam may include a horizontal angle and a vertical angle; the above-mentioned average delay refers to a weighted average value under relative delay, such as the root mean square delay; the above-mentioned spatial correlation coefficient is the correlation value of the precoding weights corresponding to the two beams, or the correlation value of the beam spatial gain spectrum; the above-mentioned time domain channel response correlation coefficient or the frequency domain channel response correlation coefficient is the corresponding correlation value of the time domain or frequency domain channel corresponding to the two beams.

[0145] Optionally, a report format combination of a beam number and a channel state information set is used, as shown in Table 6. Each group has a group number, wherein each group contains a fixed K transmit beam numbers, a spatial parameter information set, and RSRP information. The spatial parameter information set includes the horizontal angle of arrival and the vertical angle of arrival. The horizontal angle of arrival and the vertical angle of arrival in the spatial parameter information set can be obtained through angle of arrival estimation or represented by the directional angle of the receive beam with maximum power. For cases where only a 1D antenna array is required, the horizontal angle of arrival or the vertical angle of arrival that cannot be obtained can be configured as 0 by default.

[0146] Table 6

[0147]

[0148]

[0149] Optionally, an embodiment of a report format combination format of a beam sequence number and a set of channel state information is shown in Table 6a. The higher-level grouping is the receive beam set grouping, and the lower-level grouping is the antenna set grouping. Optionally, the antenna set grouping is the receive antenna set grouping. Optionally, the lower-level grouping is represented by the same grouping sequence number (virtual antenna set grouping sequence number), and in each higher level, the information from that antenna panel / TXRU is implicitly added. Wherein, under the same receive beam set, the different transmit beams reported can be received by the user at the same time. Furthermore, under different antenna sets and the same receive beam set, the different transmit beams reported can be used in space division multiplexing mode; under the same antenna set and the same receive beam set, the different transmit beams reported may not be used in space division multiplexing mode. Under different receive beam sets, the different transmit beams reported may not be received by the user at the same time. The beams under the same receive beam set grouping and the same antenna set grouping are quasi-co-located. The base station configures a base station-end beam grouping to the user. The beams within the grouping cannot be sent at the same time. At the same time, the elements within the same receiving beam set grouping need to come from different base station-end beam groupings.

[0150] Table 6a

[0151]

[0152] Optionally, another embodiment of the report format combination format of a set of beam numbers and channel state information is shown in Table 6b. The higher-level grouping is the antenna set grouping, while the lower-level grouping is the receiving beam set grouping or the receiving side spatial parameter. Optionally, the receiving side spatial parameter may be the QCL ID or the spatial parameter quantization value under the receiving end spatial parameter. Among them, the quantization area may be a different quantization step and quantization range configured for different UEs. Under different antenna sets and the same receiving beam set, the reported different transmit beams can be received by the user simultaneously and used in space division multiplexing mode. Under the same antenna set and the same receiving beam set, the reported transmit beam may not be used in space division multiplexing mode, but can be received by the user simultaneously. Under different or the same user antenna grouping and different receiving beam sets, the reported transmit beam may not be received by the user simultaneously. The beams under the same receiving beam set grouping and the same antenna set grouping are quasi-co-located. The base station configures a base station-end beam grouping to the user. The beams within the grouping cannot be sent at the same time. At the same time, the elements within the same receiving beam set grouping need to come from different base station-end beam groupings.

[0153] Table 6b

[0154]

[0155] In an optional embodiment, the receiving end groups or sets group information in one of the following ways: grouping without a reference beam; grouping based on a reference beam; wherein the transmitting end notifies the receiving end of the reference beam through QCL information, virtual cell number or physical cell number.

[0156] In this embodiment, grouping without a reference beam refers to grouping based only on the results of the current measurement, that is, beams with the same channel characteristics and / or transmission scheme are placed in the same group; grouping based on a reference beam refers to a set of reference beams or reference signals known to the receiving end, and beams with the same channel characteristics and / or transmission scheme as any of the reference beams or reference signals are placed in the same group, or share the same group information; the group information is the serial number or index of the corresponding reference beam or the reference signal carried by the reference beam.

[0157] In an optional embodiment, the above-mentioned set also includes: a reference beam number, wherein the reference beam number is at least one of the following: a beam number reported by the receiving end feedback, a reference signal number, an antenna port, a QCL assumption number, a virtual cell number, and a physical cell number.

[0158] In an optional embodiment, the receiving end obtains the reference beam sequence number by mapping the group information in the set.

[0159] In this embodiment, the above mapping method may use the same function or a specific function to perform corresponding mapping, but is not limited thereto.

[0160] In an optional embodiment, the transmitting end performs group merging on Q packets to generate R packets, where R is an integer and 1≤R≤Q.

[0161] In an optional embodiment, the above-mentioned set further includes T groups marked in the Q groups, and the number of antenna ports of the T groups, where T is an integer and 1≤T≤Q.

[0162] In an optional embodiment, the spatial parameters in the above-mentioned spatial parameter information set are obtained by one of the following methods: obtaining the spatial parameters based on the received reference signal; obtaining the spatial parameters based on the relative value of the first spatial parameter corresponding to the reference beam and the second spatial parameter of the received reference signal.

[0163] In an optional embodiment, the above set further includes one of the following information: a frequency domain response phase difference between beams corresponding to the beam numbers; and a sub-band response phase difference between beams corresponding to the beam numbers.

[0164] In an optional embodiment, after the receiving end sends a set of beam sequence numbers and channel state information to the transmitting end, the receiving end sends set information of the set to the transmitting end, wherein the set information includes at least one of the following: the panel where each group is located, one or more groups of shared panels, the antenna port where each group is located, one or more groups of shared antenna ports, groups of sharable frequency domain resource blocks, groups of sharable time domain resource blocks, and the optimal beam in each group.

[0165] In an optional embodiment, before the receiving end receives the reference signal sent by the transmitting end, the receiving end receives a report format combination of a set sent by the transmitting end, wherein the above report format combination is used to indicate the format of the set sent by the receiving end.

[0166] In this embodiment, after the receiving end receives the report format combination, the receiving end can determine the format of the sending set according to the report format combination, thereby improving data transmission efficiency and compatibility between the receiving end and the sending end.

[0167] In an optional embodiment, after the receiving end receives the report format combination of the set sent by the transmitting end, the receiving end sends a report format request to the transmitting end, wherein the report format request is used to instruct the transmitting end to allocate time-frequency resources for feedback.

[0168] In this embodiment, after the sending end receives and confirms the report format request sent by the sending end, the sending end allocates video resources for feedback.

[0169] In an optional embodiment, the above-mentioned reporting format combination may include at least one of the following information: optional subband bandwidth in the subband channel state information, optional set format, the number or maximum number of groups in the set, optional channel state information; optional set grouping criteria, optional beam sequence number and configuration criteria of the grouping sequence number of the channel state information.

[0170] Figure 3 FIG. 1 is a flow chart of a method for feeding back configuration information according to an embodiment of the present invention. Figure 3 As shown, the process includes the following steps:

[0171] Step S302: The receiving end sends antenna and beam configuration information to the transmitting end, where the configuration information is used to instruct the transmitting end to configure the antenna and beam of the transmitting end.

[0172] In this embodiment, by sending the configuration information of the antenna and beam to the transmitting end, the transmitting end can quickly configure the antenna and beam, thereby achieving rapid configuration of the antenna and beam of the transmitting end.

[0173] In an optional embodiment, the above configuration information includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space supported; support for feedback of beam sequence number and channel state information based on the reference beam.

[0174] In this embodiment, the antenna panel may be a coherent panel, but is not limited thereto.

[0175] In an optional embodiment, there are one or more antenna panels.

[0176] In an optional embodiment, as shown in Table 7, it is a report format combination of a beam number and a set of channel state information. Each group has a group number, a transmit beam number, a spatial parameter information set, including a channel response correlation coefficient, and RSRP information. The group number can be mapped to a reference beam or reference signal set number through a table or a function, that is, the group number is equal to the reference beam or reference signal set number, thereby indicating that the group and the reference beam or reference signal have the same or similar channel characteristics or the same transmission mode. The channel response correlation coefficient refers to the corresponding correlation value of the time domain or frequency domain channel corresponding to the two beams. The channel response correlation coefficient c is calculated by the following formula:

[0177]

[0178] Among them, H meas represents the channel response of the target beam, H ref represents the channel response under the reference beam.

[0179] Table 7

[0180]

[0181] In an optional embodiment, as shown in Table 8, a report format combination of a beam number and a channel state information set is provided. Each group contains a group number, a transmit beam number, a spatial parameter information set including a spatial correlation coefficient, and CQI information. The group number can be mapped to a reference beam or reference signal set number through a table or a function, that is, the group number is equal to the reference beam or reference signal set number, thereby indicating that the group and the reference beam or reference signal have the same or similar channel characteristics or the same transmission mode. The spatial correlation coefficient in the spatial parameter information set is expressed as the correlation value of the precoding weights corresponding to the two beams. The spatial correlation coefficient c is calculated using the following formula:

[0182]

[0183] Among them, W meas represents the antenna weight matrix of the 2D measurement receiving beam, and W ref The antenna weight matrix representing the 2D reference receive beam.

[0184] Table 8

[0185]

[0186]

[0187] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0188] Example 2

[0189] Figure 4 FIG. 1 is a schematic diagram of a hybrid precoding transceiver structure according to an optional embodiment of the present invention, such as Figure 4 As shown, the transmitter and receiver are configured with multiple antenna elements and multiple RF paths. Each RF path is interconnected (or partially interconnected) with an antenna array element, and each antenna element has a digitally keyed phase shifter. By applying different phase shifts to the signals on each antenna element, the high-band system implements analog beamforming. Specifically, in a hybrid beamforming transceiver, multiple RF signal streams exist. Each signal stream is loaded with an antenna weight vector (AWV) via a digitally keyed phase shifter and transmitted from the multiple antenna elements into the high-band physical propagation channel. At the receiver, the RF signal streams received by the multiple antenna elements are weighted and combined into a single signal stream. After RF demodulation at the receiver, the receiver ultimately obtains multiple received signal streams, which are then sampled and received by the digital baseband. Therefore, a hybrid precoding (or hybrid analog-digital beamforming) transceiver can simultaneously generate RF beams pointing in multiple directions.

[0190] Figure 5 Schematic diagram of a transmitting end beam, a receiving end beam and a propagation channel according to an optional embodiment of the present invention, as shown in FIG. Figure 5As shown, the transmitter and receiver perform beam scanning and channel estimation. Based on the channel estimation and receive beam characteristics, the receiver groups multiple beams for different physical paths. Each group can include one or more transmit and receive beams, where TB represents a transmit beam and RB represents a receive beam.

[0191] Figure 6 FIG. 1 is a schematic diagram of a beam scanning set according to an optional embodiment of the present invention (I), as shown in FIG. Figure 6 As shown, the transmitting end candidate beam corresponds to the channel state information reference signal (CSI-RS) port or time-frequency code position associated with the beam, or transmits the reference signal by the transmit beam sequence number. The transmit beam sequence number has a mapping relationship with the resource. By scanning the transmit beams in the transmitting end candidate beam resource pool 62, the reference signal is sent, and the receiving end uses the receive beam of the receive beam set 64 to receive and perform channel estimation.

[0192] Figure 7 FIG2 is a schematic diagram of a beam scanning set according to an optional embodiment of the present invention (II), as shown in FIG2. Figure 7 As shown, the transmitting end alternative beam resource pool 72 sends a reference signal to the receiving end receiving beam set 74. The transmitting end alternative beam corresponds to the beam-related CSI-RS port or time-frequency code position, or sends the reference signal by the transmitting beam number. The above-mentioned transmitting beam number has a mapping relationship with the resource. At the same time, there is a reference beam and reference signal set 76 for feedback of the beam number and channel state information. The reference beam and reference signal set 76 are notified to the pilot receiving end through the downlink control indicator (Downlink Control Indicator, abbreviated as DCI), the media access control-control element (Media Access Control-Control Element, abbreviated as DCI MAC-CE) or the radio resource control (Radio Resource Control, abbreviated as RRC) signaling. By scanning the transmitting beam of the transmitting end alternative beam resource pool 72, the reference signal is sent, and the receiving end uses the receiving beam of the receiving beam set 74 to receive and perform channel estimation.

[0193] Example 3

[0194] Figure 8 Flowchart (1) of a beam information feedback method according to an optional embodiment of the present invention, Figure 8 As shown, the process is as follows:

[0195] In step S802, the transmitting end sends an optional reporting format of a beam number and a channel state information set to the receiving end, wherein the optional reporting format group includes a set, each element in the set corresponds to a specific reporting format configuration mode, such as an optional subband feedback bandwidth and / or reporting mode schemes 1 to 4 described in the optional embodiments of the present invention.

[0196] Step S804: The transmitting end sends N reference signals to the receiving end.

[0197] Step S806: The receiving end performs signal processing, such as channel estimation and adjustment of the receiving beam.

[0198] Step S808: The receiving end sends a report format request to the transmitting end according to the channel estimation result.

[0199] Step S810: The transmitting end confirms the report format request, triggers feedback and allocates time-frequency resources for feedback.

[0200] In step S812, the receiving end feeds back the set of beam sequence number and channel state information to the transmitting end.

[0201] Figure 9 Flowchart (II) of the beam information feedback method according to an optional embodiment of the present invention, such as Figure 9 As shown, the process is as follows:

[0202] In step S902, the receiving end sends the configuration and function information of the antenna and beam to the transmitting end, wherein the configuration and function information of the antenna and beam includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space that can be supported; and support for feedback of beam sequence number and channel state information based on the reference beam.

[0203] Step S904: The transmitting end sends reference beam or reference signal set information to the receiving end.

[0204] Step S906: The transmitting end sends N reference signals to the receiving end.

[0205] In step S908, the receiving end performs signal processing, such as channel estimation and adjustment of the receiving beam.

[0206] Step S910: The transmitting end triggers feedback and sends the allocated time-frequency resources for feedback to the receiving end.

[0207] In step S912, the receiving end feeds back the set of beam number and channel state information to the transmitting end. Optionally, the receiving end feeds back the set of beam number and channel state information to the transmitting end according to the default reporting format or the reporting format configured by the high-level MAC-CE or RRC.

[0208] Example 4

[0209] This embodiment also provides a beam information feedback device for implementing the above-mentioned embodiments and preferred implementations. Details already described are omitted for clarity. As used below, the term "module" may refer to a combination of software and / or hardware that implements a predetermined function. While the devices described in the following embodiments are preferably implemented in software, implementation using hardware, or a combination of software and hardware, is also possible and contemplated.

[0210] Figure 10 is a structural block diagram of a beam information feedback device according to an embodiment of the present invention. Figure 10 As shown, the device includes a first receiving module 102, which is used to receive a reference signal sent by a transmitting end, wherein the above-mentioned reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the above-mentioned reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; an acquisition module 104, which is used to obtain the beam number and channel state information according to the reference signal; a first sending module 106, which is used to send a set including the beam number and channel state information to the transmitting end.

[0211] In an optional embodiment, the above-mentioned set includes Q groups, where Q is an integer greater than or equal to 1; each group includes at least one of the following: a beam sequence number, channel state information, group information, and a spatial parameter information set.

[0212] In an optional embodiment, the above-mentioned beam number includes at least one of the following: a transmitting beam number and a receiving beam number; the above-mentioned channel state information includes at least one of the following: transmitting beam channel state information, receiving beam channel state information, and channel state information of a transmitting beam and a receiving beam combination; the above-mentioned spatial parameter information set includes at least one of the following: a transmitting beam spatial parameter information set, a receiving beam spatial parameter information set, and a spatial parameter information set of a transmitting beam and a receiving beam combination.

[0213] In an optional embodiment, Figure 11 1 is a structural block diagram of a beam information feedback device according to an optional embodiment of the present invention (I), as shown in FIG. Figure 11 As shown, the device includes Figure 10In addition to all the modules shown, the system further includes a second receiving module 112, which is used to receive the report format combination of the above set sent by the sending end, wherein the report format combination is used to indicate the format of the above set sent by the receiving end.

[0214] In an optional embodiment, Figure 12 : is a structural block diagram (II) of a beam information feedback device according to an optional embodiment of the present invention, such as Figure 12 As shown, the device includes Figure 11 In addition to all the modules shown, the system further includes a second sending module 122, which is used to send a report format request to the sending end, wherein the report format request is used to instruct the sending end to allocate time-frequency resources for feedback.

[0215] In this embodiment, a configuration information feedback device is also provided. Figure 13 is a structural block diagram of a device for feeding back configuration information according to an embodiment of the present invention. Figure 13 As shown, the device includes a sending module 132, which is used to send configuration information of antennas and beams to the sending end, wherein the configuration information is used to instruct the sending end to configure the antennas and beams of the sending end.

[0216] In an optional embodiment, the above configuration information includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space supported; support for feedback of beam sequence number and channel state information based on the reference beam.

[0217] It should be noted that the above modules can be implemented through software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0218] Example 5

[0219] In this embodiment, a receiving end is also provided, which is used to implement the above embodiments and preferred implementation modes, and will not be repeated here.

[0220] The above-mentioned receiving end includes a communication device and a processor, wherein the above-mentioned communication device is used to receive a reference signal sent by the transmitting end, wherein the above-mentioned reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to the time-frequency code resources; and sending a set including the beam sequence number and channel state information to the transmitting end; the above-mentioned processor is used to obtain the set according to the reference signal.

[0221] In an optional embodiment, the above set includes Q groups, where Q is an integer greater than or equal to 1; each group includes at least one of the following: beam sequence number, channel state information, group information, and spatial parameter information set

[0222] In this embodiment, a receiving end is also provided, which includes a communication device for sending configuration information of an antenna and a beam to a transmitting end, wherein the configuration information is used to instruct the transmitting end to configure the antenna and the beam of the transmitting end.

[0223] In an optional embodiment, the above configuration information includes at least one of the following information: the number of antenna panels; the number of TXRUs under each antenna panel; the threshold of the beam space correlation characteristics of multiple streams; support for independent division of antenna port QCL; optional subband bandwidth in configurable subband channel state information; parameter information of the feedback space supported; support for feedback of beam sequence number and channel state information based on the reference beam.

[0224] An embodiment of the present invention further provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program code for executing the following steps: S1, a receiving end receives a reference signal sent by a transmitting end, wherein the reference signal is carried on one or more beams, or each reference signal group is carried on the same beam, and the reference signal group is a reference signal group obtained by dividing the reference signal according to time-frequency code resources; S2, the receiving end obtains a beam number and channel state information based on the reference signal; S3, the receiving end sends a set including the beam number and channel state information to the transmitting end.

[0225] Optionally, the storage medium is further configured to store program code for executing the following steps: the receiving end selects a beam according to at least one of the following criteria: maximizing the receiving end signal-to-noise ratio; maximizing the receiving end signal-to-interference-plus-noise ratio; maximizing the received signal strength; maximizing the received signal quality.

[0226] Optionally, the storage medium is further configured to store program codes for executing the following steps: the group information is transmitted in one of the following ways: a time-frequency code resource carrying the group information; and the group information is outputted in a displayed manner.

[0227] Optionally, the storage medium is also configured to store program code for performing the following steps: the receiving end groups or sets group information in one of the following ways: grouping without a reference beam; grouping based on a reference beam; wherein the transmitting end notifies the receiving end of the reference beam through QCL information, virtual cell number or physical cell number.

[0228] Optionally, the storage medium is further configured to store program codes for executing the following steps: the receiving end obtains the reference beam sequence number by mapping the group information in the set.

[0229] Optionally, the storage medium is further configured to store program codes for executing the following steps: the transmitting end performs group merging on Q groups to generate R groups, where R is an integer and 1≤R≤Q.

[0230] Optionally, the storage medium is also configured to store program code for performing the following steps: the spatial parameters in the spatial parameter information set are obtained by one of the following methods: obtaining the spatial parameters based on the received reference signal; obtaining the spatial parameters based on the relative value of the first spatial parameter corresponding to the reference beam and the second spatial parameter of the received reference signal.

[0231] Optionally, the storage medium is also configured to store program code for performing the following steps: the receiving end sends collection information of the collection to the transmitting end, wherein the collection information includes at least one of the following: the panel where each group is located, one or more groups of shared panels, the antenna port where each group is located, one or more groups of shared antenna ports, groups of sharable frequency domain resource blocks, groups of sharable time domain resource blocks, and the optimal beam in each group.

[0232] Optionally, the storage medium is further configured to store program codes for executing the following steps: the receiving end receives a report format combination of a set sent by the sending end, wherein the report format combination is used to indicate a format of the set sent by the receiving end.

[0233] Optionally, the storage medium is further configured to store program codes for executing the following steps: the receiving end sends a report format request to the sending end, wherein the report format request is used to instruct the sending end to allocate time-frequency resources for feedback.

[0234] An embodiment of the present invention further provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program code for executing the following steps: a receiving end sends antenna and beam configuration information to a transmitting end, wherein the configuration information is used to instruct the transmitting end to configure the antenna and beam of the transmitting end.

[0235] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store program codes.

[0236] Optionally, specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0237] Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented using a general-purpose computing device, centralized on a single computing device, or distributed across a network of multiple computing devices. Alternatively, they can be implemented using program code executable by a computing device, which can then be stored in a storage device and executed by the computing device. In some cases, the steps shown or described can be performed in a different order than that shown, or can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0238] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A communication method, characterized in that: include: The first communication node receives a set of reference signals carried on multiple beams from the second communication node, wherein the set of reference signals includes a channel state information reference signal CSI-RS determined based on one or more time-frequency code resources; The first communication node determines one or more beam numbers and channel state information based on the set of reference signals; The first communication node sends a set including the one or more beam numbers and the channel state information to the second communication node, The set includes Q groups, where Q is an integer greater than 1, and each of the Q groups includes: the channel state information, a beam number among the one or more beam numbers, and an indicator, wherein the indicator indicates the number of antenna ports.

2. The method according to claim 1, characterized in that Each of the Q groups includes at least one of the following: group information and a set of spatial parameter information.

3. The method according to claim 1, characterized in that One beam number among the one or more beam numbers corresponds to a resource number.

4. The method according to claim 1, wherein The transmission schemes corresponding to the Q packets are the same, wherein the Q packets have the same group information.

5. The method according to claim 1, wherein For a first subset of packets from the Q packets having the same group information, at least one of the following conditions is satisfied: The transmission scheme of the first subset of the packets is the same; The channel characteristics of the first subset of the groups are the same; The channel characteristics of the first subset of the groups are quasi-identical, wherein the quasi-identical channel characteristics refer to differences between the channel characteristics being within a specified range or constraint, and the range or constraint is determined by dynamic configuration or pre-setting.

6. The method according to claim 1, characterized in that Each of the Q groups further includes an end symbol, wherein the end symbol is located at the end position of the corresponding group and / or the end position of the set.

7. The method according to claim 6, characterized in that The terminator is transmitted in one of the following ways: Transmitted on the time-frequency code resources that carry group information; Limiting the number of the Q packets to 1, and limiting the number of sets sent by the second communication node using periodic or semi-periodic feedback in each period to 1; Limiting the number of the Q packets to 1, and limiting the number of sets sent by the second communication node using periodic or semi-periodic feedback under aperiodic triggering to 1; Output a specific value or the terminator indicating the value of the valid range of the non-feedback signal.

8. The method according to claim 2, characterized in that The second communication node performs grouping or sets the group information in one of the following ways: Grouping without a reference beam; performing grouping based on the reference beam; The first communication node notifies the second communication node of the reference beam through a reference signal number, quasi-co-site QCL information, a virtual cell number or a physical cell number.

9. The method according to claim 8, characterized in that The set also includes a reference beam number, which includes at least one of the following: the beam number reported by the second communication node, the reference signal number, the antenna port, the QCL hypothesis number, the virtual cell number, and the physical cell number.

10. The method according to claim 9, characterized in that The second communication node determines the reference beam number by mapping the group information.

11. The method according to claim 2, characterized in that The method comprises: The first communication node merges the Q packets into R packets, where R is an integer and 1≤R≤Q.

12. A first communication node, characterized in that: include: at least one processor configured to: Receiving a set of reference signals carried on multiple beams from a second communication node, wherein the set of reference signals includes a channel state information reference signal (CSI-RS) determined based on one or more time-frequency code resources; determining one or more beam numbers and channel state information based on the set of reference signals; sending a set including the one or more beam numbers and the channel state information to the second communication node, The set includes Q groups, where Q is an integer greater than 1, and each of the Q groups includes: the channel state information, a beam number among the one or more beam numbers, and an indicator, wherein the indicator indicates the number of antenna ports.

13. The first communication node according to claim 12, characterized in that One beam number among the one or more beam numbers corresponds to a resource number.

14. The first communication node according to claim 12, characterized in that The transmission schemes corresponding to the Q packets are the same, wherein the Q packets have the same group information.

15. A communication method, characterized in that: include: The second communication node sends a set of reference signals carried on multiple beams to the first communication node, wherein the set of reference signals includes a channel state information reference signal CSI-RS determined based on one or more time-frequency code resources; The second communication node receives, from the first communication node, a set including one or more beam numbers and channel state information, where the one or more beam numbers and the channel state information are determined by the first communication node based on the set of reference signals; The set includes Q groups, where Q is an integer greater than 1, and each of the Q groups includes: the channel state information, a beam number among the one or more beam numbers, and an indicator, wherein the indicator indicates the number of antenna ports.

16. The method according to claim 15, characterized in that One beam number among the one or more beam numbers corresponds to a resource number.

17. The method according to claim 15, characterized in that The transmission schemes corresponding to the Q packets are the same, wherein the Q packets have the same group information.

18. A second communication node, characterized in that: include: at least one processor configured to: Sending a set of reference signals carried on multiple beams to the first communication node, wherein the set of reference signals includes a channel state information reference signal CSI-RS determined based on one or more time-frequency code resources; receiving, from the first communication node, a set including one or more beam numbers and channel state information, where the one or more beam numbers and the channel state information are determined by the first communication node based on the set of reference signals; The set includes Q groups, where Q is an integer greater than 1, and each of the Q groups includes: the channel state information, a beam number among the one or more beam numbers, and an indicator, wherein the indicator indicates the number of antenna ports.

19. The second communication node according to claim 18, characterized in that One beam number among the one or more beam numbers corresponds to a resource number.

20. The second communication node according to claim 18, characterized in that The transmission schemes corresponding to the Q packets are the same, wherein the Q packets have the same group information.

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