Information reporting method and device, and information transmission method and device

Abstract

To provide information reporting method and device and information transmission method and device that improve the stability of beam-related information reporting.SOLUTION: A method for beam-related information reporting includes: a second communication node receiving a reference signal from a first communication node, to determine a reference signal-related index and / or channel state information; and the second communication node reporting a set to the first communication node. The set includes at least one of the reference signal-related index and the channel state information. The second communication node reports its own capability, so that the first communication node can indicate a beam reporting that meets the user capability, thereby improving the stability of the beam-related information reporting.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] <Cross - reference to Related Applications> This patent application claims the benefit of, and incorporates by reference in its entirety, Chinese Patent Application No. 201710687945.9, filed on August 11, 2017.

[0002] This disclosure relates to the field of communications, and more particularly, to methods and apparatuses for information reporting, and methods and apparatuses for information transmission.

Background Art

[0003] In the prior art, ultra - wideband high - frequency (UWHF) (i.e., millimeter - wave communication) has become a key factor in the development of future mobile communications and has attracted attention in academic and industrial circles around the world. In particular, the advantages of millimeter - wave communication are becoming increasingly attractive due to the increasingly congested spectrum resources and the increasing physical networks with access. Many standardization organizations such as IEEE and 3GPP have started standardization work. For example, in the 3GPP standard, high - frequency communication has become an important innovation point of 5G New Radio Access Technology (New RAT) because of its high bandwidth with significant advantages.

[0004] However, high - frequency communication also faces the problem of link attenuation. More specifically, high propagation path loss, greater atmospheric absorption (especially oxygen), and heavy rain attenuation are involved. Facing these problems, high - frequency communication systems have been able to utilize shorter wavelengths and easier antenna integration, and achieve high antenna gain and counter - signal transmission loss through multi - antenna arrays and beamforming methods to ensure link margin and improve communication robustness.

[0005] The training of antenna weights (i.e., precoding or beams) includes a high-frequency transmitting end that transmits training pilots and a receiving end that receives signals and performs channel estimation. The high-frequency receiving end notifies the channel state information (CSI) to the side that transmits the training pilots. Thereby, the transmitting end and the receiving end can determine a plurality of antenna weight pairs from candidate antenna weight pairs required for multipath data transmission, and can improve the spectral efficiency.

[0006] In a conventional millimeter-wave communication system, beam-related information feedback includes a plurality of beam numbers and corresponding channel qualities (e.g., SINR or RSRP) under the maximum channel quality to generate a corresponding beam pair for data transmission. However, the beam receiving ability and the beam transmitting ability are different among different users or base station characteristics, and the beam receiving characteristics and the beam transmitting characteristics are different among different physical panels. In addition, the movement of the device and the selection of the user may require that only a part of the beams be updated. The methods of related technologies can only report the maximum values of a limited number of beams, and cannot flexibly support beam measurement and grouping, beam tracking and status reporting among different types of UEs, and different transmission requirements.

[0007] The technical methods of the prior art do not provide a method for beam-related information reporting that supports multiple types of base stations and user capabilities and scenarios.

[0008] Currently, there is no effective solution that can solve the problem that the flexibility and adaptability of beam-related information reporting in the prior art are low. Summary of the Invention Means for Solving the Problems

[0009] According to embodiments of the present disclosure, a method and apparatus for information reporting, and a method and apparatus for information transmission are provided, which at least solve the problems of low flexibility and insufficient adaptability of beam-related information reporting in the prior art.

[0010] According to embodiments of the present disclosure, a method for information reporting is provided. The method includes: receiving, by a second communication node, a reference signal from a first communication node and determining a reference signal-related index and / or channel state information; reporting, by the second communication node, a set to the first communication node, where the set includes at least one of the reference signal-related index or the channel state information.

[0011] According to embodiments of the present disclosure, a method for information transmission is provided. The method includes: determining, by a second communication node, reference signal resource-related information to be transmitted to a first communication node; transmitting the related information to the first communication node.

[0012] According to another embodiment of the present disclosure, an apparatus for information reporting applicable to a second communication node is provided. The apparatus includes: a first receiving module configured to receive a reference signal from a first communication node and determine a reference signal-related index and / or channel state information; a reporting module configured to report a set to the first communication node, where the set includes at least one of the reference signal-related index or the channel state information.

[0013] According to another embodiment of the present disclosure, an apparatus for information transmission applicable to a second communication node is provided. The apparatus includes: a determining module configured to determine reference signal resource-related information to be transmitted to a first communication node; a first transmitting module configured to transmit the related information to the first communication node.

[0014] According to another embodiment of the present disclosure, an apparatus for information reporting applicable to a first communication node is provided. The apparatus includes: a second transmission module configured to transmit reference information to a second communication node and determine a reference signal related index and / or channel state information according to a reference signal; a second reception module configured to receive a set reported by the second communication node, the set including at least one of the reference signal related index or the channel state information.

[0015] According to another embodiment of the present disclosure, a storage medium storing a program is provided. When the program is executed, it executes any one of the methods according to the above alternative embodiments.

[0016] According to another embodiment of the present disclosure, a processor for executing a program is provided. When the program is executed, it executes any one of the methods according to the above alternative embodiments.

[0017] According to the present disclosure, the second communication node receives a reference signal from the first communication node to determine a reference signal related index and / or channel state information, and the second communication node reports a set to the first communication node, the set including at least one of the reference signal related index or the channel state information. This technical solution solves the problems that the flexibility and adaptability of beam related information reporting in the related art are low. The second communication node reports its own capabilities, and as a result, the first communication node can indicate a beam report that matches the user capabilities, thereby improving the stability of beam related information reporting.

Brief Description of the Drawings

[0018] The accompanying drawings incorporated herein and constituting a part of this specification illustrate embodiments of the present disclosure. The exemplary embodiments and their descriptions are described by way of illustration and should not be construed as limiting the scope of the present disclosure.

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Embodiments for Carrying Out the Invention

[0027] Embodiments of the present disclosure provide a mobile communication network (including, but not limited to, a 5G network), and the network structure of the network can include network-side devices (e.g., base stations) and terminals. According to one embodiment, a method for information transmission operable on the network structure is provided. It should be noted that the method according to this embodiment can also operate similarly in other operating environments.

[0028] In the present disclosure, the first communication node is, for example, a base station-side device (in other words, a reference signal transmitter or transmitter), and the second communication node is, for example, a terminal-side device (in other words, a reference signal receiver or receiver). Of course, the first communication node may also be a terminal device, and in that case, the solution according to the embodiments of the present disclosure is applicable to Device to Device (D2D) communication.

[0029] <Embodiment 1>

[0030] According to this embodiment, an information reporting method operable on the base station side of the above network configuration is provided. FIG. 1 is a flowchart showing an information reporting method according to an embodiment of the present invention. As shown in FIG. 1, this method includes the following:

[0031] In S102, the second communication node receives a reference signal from the first communication node and determines a reference signal related index and / or channel state information;

[0032] In S104, the second communication node reports a set including at least one of the reference signal related index or the channel state information to the first communication node.

[0033] By the above steps, the second communication node receives a reference signal from the first communication node to determine a reference signal related index and / or channel state information, and the second communication node reports a set to the first communication node, where the set includes at least one of the reference signal related index or the channel state information. This technical solution solves the problems of low flexibility and low adaptability in beam related information reporting in the related art. The second communication node reports its own capabilities, and as a result, the first communication node can indicate a beam report that matches the user capabilities, thereby improving the stability of beam related information reporting.

[0034] In an embodiment, the set includes Q groups, and each group can include at least one of the following: a group index, a reference signal related index, and channel state information. The reference signal related index can include at least one of the following: a reference signal configuration index, a reference signal resource set index, a reference signal resource index, a reference signal port index, a measurement limit window index, a time-frequency window index, and a reporting configuration index. The channel state information can include at least one of the following: CQI (Channel Quality Indicator), RI (Rank Indication), RSRP (Reference Signal Receiving Power), PMI (Precoding Matrix Indicator), and co-phasing information. Q is an integer greater than or equal to 1.

[0035] In an embodiment, the second communication node receives configuration information for reporting the set. The configuration information can include at least one of the following: a group index corresponding to the group, or a subset of the group index corresponding to the group, where the group index corresponding to the group or the subset of the group index corresponding to the group is a subset of the set of group indexes; grouping constraint information; grouping conditions; and reference signal configuration.

[0036] In an embodiment, the grouping constraint information includes at least one of the following: the number of groups; a relative threshold or an absolute threshold for determining whether the second communication node reports a set in a measurement metric; the Xth strongest beam grouping in the measurement metric; the first Y beam groupings in the measurement metric in descending order of strength. X is an integer greater than or equal to 1, or X is a set consisting of positive integers greater than or equal to 1, and X is configured or pre-configured by the first communication node. Y is an integer greater than or equal to 1. It should be noted that the metric can include at least one of BLER, CQI, received signal power, RSRP, RSRQ, channel capacity, signal-to-noise ratio at the receiving end, and signal-to-noise ratio at the receiving end.

[0037] In an embodiment, the set of group indexes is configured by the first communication node.

[0038] In an embodiment, when the configuration information includes a subset of group indexes corresponding to a group, the second communication node reports the set by using one of the grouping information. This grouping information includes: indexes within the subset of group indexes corresponding to the group; indexes obtained by re-numbering the indexes within the subset of group indexes corresponding to the group. Alternatively, when the configuration information includes a subset of group indexes corresponding to a group, the second communication node does not report the group index information when reporting the set.

[0039] In an embodiment, the grouping condition includes at least one of the following: reference signals within the same group cannot be simultaneously received by the second communication node, or reference signals within the same group can be simultaneously received by the second communication node; reference signals within different groups can be simultaneously received by the second communication node, or reference signals within different groups cannot be simultaneously received by the second communication node; reference signals within each group cannot be multiplexed, or reference signals within each same group can be multiplexed; reference signals within different groups cannot be multiplexed, or reference signals within different groups can be multiplexed; reference signals within each group cannot be simultaneously transmitted by the first communication node, or reference signals within each group can be simultaneously transmitted by the first communication node. The grouping condition includes a first-level grouping condition, or a first-level and a second-level grouping condition for two-level grouping, or a k-th level grouping condition for K-level grouping, where K and k are integers greater than or equal to 1, and K is greater than or equal to k.

[0040] In an embodiment, before the second communication node receives a reference signal from the first communication node, the method includes the following steps: transmitting at least one of the following from the second communication node to the first communication node: the grouping condition supported by the second communication node; the number of transceiver units (TXRUs) in the group; the number of TXRUs of the reference signal related index in the group; the maximum number of layers in the group; the maximum number of layers of the reference signal related index in the group; the number of reported groups or the set of reported groups; the maximum number of supported groups; the maximum number of layers of the second communication node; the number or maximum number of reference signal resources or antenna ports measured simultaneously; the number of time domain repetitions of the reference signal resources under measurement constraints or within a time-frequency measurement window; the number of time domain units occupied by the reference signal resources under measurement constraints or within a time-frequency measurement window. The maximum number of layers of the communication node may be the number of radio frequency links of the device; the number or maximum number of reference signal resources or antenna ports measured simultaneously represents the ability to receive different transmission beams simultaneously (the number of panels), and the number of time domain repetitions of the reference signal resources corresponds to the number of received beams measured.

[0041] In an embodiment, the time domain unit includes one of the following: (M / N) of an orthogonal frequency division multiplexing (OFDM) symbol, an OFDM symbol, a slot, or a subframe. Here, M and N are integers greater than or equal to 1.

[0042] In an embodiment, the second communication node supports at least one of the following modes: Transmitting RSRP and RI in the same report format, slot, subframe, or slot / subframe bundling element; Transmitting RSRP and PMI in the same report format, slot, subframe, or slot / subframe bundling element; Transmitting RSRP and Co-phasing in the same report format, subframe, or slot / subframe bundling element; Transmit RSRP and CQI in different report formats.

[0043] In an embodiment, the step of reporting a set by a second communication node to a first communication node includes: the step of reporting, by the second communication node, first type of reporting information and second type of reporting information to the first communication node; in a case where the first type of reporting information and the second type of reporting information conflict, the step of preferentially transmitting the first type of reporting information based on a preset rule, or the step of preferentially transmitting the second type of reporting information based on a preset rule. The first type of reporting information includes at least an RSRP report, and the second type of reporting information includes at least one of the following reports: RI, PMI, co-phasing, CQI.

[0044] In an embodiment, the step of reporting a set by a second communication node to a first communication node includes: the step of reporting, by the second communication node, a reference signal related index to the first communication node, where the reference signal related index reported by the second communication node is associated with a channel quality (or channel quality degradation rate) that satisfies a first specified condition, or the reference signal related index is configured to request the first communication node to transmit a reference signal having channel characteristics, and the channel characteristics satisfy the reference signal channel characteristic requirements indicated by the reference signal related index. The channel characteristic requirements can include one of the following: QCL, spatial reception parameter requirements.

[0045] In an embodiment, the step of reporting a reference signal related index by a second communication node is triggered by a first communication node or by a second communication node that satisfies a second specified condition.

[0046] In an embodiment, the first specified condition includes at least one of the following: the channel quality related to the reference signal related index is lower than a predefined or configured threshold; the difference between the channel quality related to the reference signal related index and the highest reference signal quality measured at the second communication node is lower than a predefined or configured threshold; the difference between the channel quality related to the reference signal related index and the average of the N highest reference signal qualities is lower than a predefined or configured threshold; the difference between the channel quality related to the reference signal related index and the cell signal quality is lower than a predefined or configured threshold.

[0047] In an embodiment, the channel quality is the average, highest, lowest, or weighted average of the channel quality in one or more time windows.

[0048] In an embodiment, the reference signal includes one or more reference signal resources. The antenna ports of the same reference signal resource meet a predetermined channel characteristic requirement, or the antenna ports of the same reference signal resource do not meet a predetermined channel characteristic requirement.

[0049] In an embodiment, whether the antenna ports of the same reference signal resource meet the channel characteristic requirement is configured by the first communication node for the second communication node; or is determined by the second communication node according to the graph of the reference signal, the code division scheme of the reference signal, or the number of antenna ports of the reference signal.

[0050] In an embodiment, when the antenna ports of the same reference signal resource meet the channel characteristic requirement, the set of the reference signal related index and the channel state information includes at least the reference signal resource index. When the antenna ports of the same reference signal resource do not meet the channel characteristic requirement, the set of the reference signal related index and the channel state information includes at least the reference signal port index, the reference signal port index, and the reference signal resource index.

[0051] In an embodiment, when antenna ports of the same reference signal resource are code-division multiplexed, the spatial reception parameters of the antenna ports satisfy the quasi-co-location (QCL) assumption.

[0052] In an embodiment, after X time elements following a reference signal are configured by a first communication node, or after X time elements following an affirmative response of a second communication node, it is suggested to report, to the second communication node, a set of a reference signal related index and channel state information by using the reference signal. The time element is, for example, at least one of an OFDM symbol, a slot, and a subframe.

[0053] According to another embodiment of the present disclosure, a method for information transmission is provided. The method includes the following: Step 1: Determine, by a second communication node, reference signal resource related information to be transmitted to a first communication node, Step 2: Transmit the related information to the first communication node.

[0054] In an embodiment, the reference signal resource related information includes at least one of the following: grouping related information; the maximum number of layers within a group; the maximum number of layers of an uplink reference signal; the maximum number of layers of a downlink reference signal; uplink reference signal capability information; uplink or downlink reference signal capability information of a first group, where the first group is configured by a first communication node or uplink or downlink reference signal configuration requirement information reported by a second communication node; uplink or downlink reference signal configuration requirement information of a second group, where the second group is configured by a first communication node or uplink or downlink reference signal configuration requirement information reported by a second communication node; uplink reference signal configuration requirement information corresponding to an uplink reference signal related index or downlink reference signal configuration requirement information corresponding to a downlink reference signal related index, where the uplink or downlink reference signal related index is configured by a first communication node or uplink or downlink reference signal configuration requirement information reported by a second communication node; uplink reference signal configuration requirement information when using a spatial filter that is the same as or similar to that used for an uplink reference signal, or downlink reference signal configuration requirement information when using a spatial filter that is the same as or similar to that used for a downlink reference signal, where the uplink or downlink reference signal is configured by a first communication node or reported by a second communication node, and the reference signal related index includes at least one of the following: a reference signal configuration index, a reference signal resource set index, a reference signal resource index, a reference signal port index, a measurement restriction window index, a time-frequency window index, a reporting configuration index.

[0055] In an embodiment, the uplink reference signal includes at least one of the following: uplink demodulation reference signal (UL DMRS), sounding reference signal (SRS), phase tracking reference signal (PTRS).

[0056] In an embodiment, the second communication node groups uplink reference signals according to at least one of the following grouping conditions: Different reference signals within the same group cannot be transmitted simultaneously, or the second communication node does not prioritize or support different reference signals within the same group being presented for the same transmission; More than P different reference signals within the same group cannot be transmitted simultaneously, or the second communication node does not prioritize or support presenting more than P different reference signals within the same group for the same transmission; Different reference signals within the same group can be transmitted simultaneously, or the second communication node supports presenting different reference signals within the same group in the same transmission; Different reference signals in different groups cannot be transmitted simultaneously, or the second communication node does not prioritize or support presenting different reference signals in different groups for the same transmission; More than Q reference signals in different groups cannot be transmitted simultaneously, or the second communication node does not prioritize or support presenting more than Q different reference signals in different groups for the same transmission; Reference signals in different groups can be transmitted simultaneously, or the second communication node supports presenting different reference signals in different groups for the same transmission; P and Q are integers greater than or equal to 1.

[0057] In an embodiment, the second communication node notifies the first communication node of P or Q.

[0058] In an embodiment, the same transmission refers to the transmission of different reference signals that occur simultaneously at at least one given time.

[0059] In an embodiment, the uplink reference signal configuration related signaling received by the second communication node includes group index notification information.

[0060] In an embodiment, the second communication node transmits an uplink reference signal according to the group index notification information.

[0061] In an embodiment, the grouping related information includes at least one of the following: group index, uplink reference signal resource index, uplink reference signal resource set index, uplink reference signal resource antenna port index, window index. The group index includes at least one of the following: uplink group index, downlink group index. Note that in the case of beam correspondence, uplink grouping can inherit downlink grouping characteristics.

[0062] In an embodiment, the uplink reference signal configuration requirement information includes at least one of the following: type of uplink reference signal, number of antenna ports of the uplink reference signal resource, number of uplink reference signal resources, number of uplink reference signal resource sets.

[0063] In an embodiment, the uplink reference signal capability information includes at least one of the following: number of TXRUs; maximum number of antenna ports of the uplink reference signal resource; maximum number of layers; number of groups to be notified or set of numbers of groups to be notified; maximum number of groups to be supported; number or maximum number of reference signal resources or antenna ports that may be transmitted simultaneously; number or maximum number of uplink reference signal resources; number of time domain repetitions of the uplink reference signal resource.

[0064] According to another embodiment of the present disclosure, a method for information reporting is provided. This method includes the following: Step 1: The first communication node transmits reference information to the second communication node, and the second communication module determines a reference signal related index and / or channel state information according to the reference signal; Step 2: Receive the set reported by the second communication node, the set including at least one of a reference signal related index and channel state information.

[0065] Hereinafter, preferred embodiments of the present disclosure will be described in detail.

[0066] Regarding the technical terms used in the present disclosure, before describing the preferred embodiments, the following will be described:

[0067] The reference signal includes at least one of the following: cell reference signal (CRS), channel state information reference signal (CSI-RS), channel state information reference signal for beam management, channel state information interference measurement signal (CSI-IM), demodulation reference signal (DMRS), downlink demodulation reference signal, uplink demodulation reference signal, channel sounding reference signal (SRS), phase tracking reference signal (PT-RS), movement related reference signal (MRS), beam reference signal (BRS), beam refinement reference signal (BRRS), random access channel signal (RACH), synchronization signal (SS), synchronization signal block (SS block), primary synchronization signal (PSS), secondary synchronization signal (SSS).

[0068] The ID notification includes, but is not limited to, the following: media access control (MAC) address, cell radio network temporary identifier (C-RNTI), temporary C-RNTI (TC-RNTI), dedicated ID assigned by the base station to the UE.

[0069] The grouping of beam related information is to divide beams and related channel state information having the same channel characteristics and / or transmission mode into sets. The channel characteristics include physical propagation channel characteristics such as quasi-collocation (QCL), horizontal transmission tilt angle, vertical transmission tilt angle, horizontal reception tilt angle, vertical reception tilt angle, etc., and radio frequency and baseband circuit characteristics such as element pattern, antenna arrangement, and baseband time offset, frequency offset, phase noise, etc.

[0070] A group may also be referred to as a set.

[0071] A beam may be a resource (e.g., transmit precoding, receive precoding, antenna port, antenna weight vector, antenna weight matrix). The beam sequence number and resource index are interchangeable. This is because, upon transmission, a beam can be bound to several time - frequency code resources. A beam may also be a transmission (transmission / reception) scheme, and the transmission scheme may include spatial division multiplexing, frequency / time domain diversity, etc.

[0072] A received beam notification means that the transmitting end can notify by using the current reference signal and antenna port, the reference signal reported by the UE (i.e., the standard reference signal), and the quasi - collocation (QCL) assumption of the antenna port.

[0073] A received beam refers to a beam at the receiving end for which notification is not required, or a beam resource at the receiving end, that the transmitting end can notify by using the current reference signal and antenna port, and the reference signal (i.e., the standard reference signal) reported by the UE and the quasi - collocation (QCL) assumption of the antenna port.

[0074] Channel state information includes at least a precoding matrix indicator (PMI), a channel quality indicator (CQI), a reference signal received power (RSRP), a reference signal received quality (RSRQ), a rank indicator (RI), etc.

[0075] Quasi - collocation (QCL) parameters include at least Doppler spread, Doppler shift, delay spread, average delay, and average gain, and may further include spatial parameters or spatial reception parameters such as angle of arrival, spatial correlation of the received beam, average delay, correlation of the time - frequency channel response (including phase information).

[0076] FIG. 2 is a schematic structural diagram of a hybrid precoding (analog-digital hybrid beamforming) transceiver according to an embodiment of the present disclosure. A multi-antenna unit and a plurality of radio frequency links are configured at the transmitting end and the receiving end of the system. Each RF link is connected to (including being partially connected to) an antenna array unit, and each antenna unit includes a digital keying phase shifter. The high-frequency system realizes analog beamforming by applying different phase shifts to the signals of different antenna units. In particular, there are a plurality of RF signal streams in the hybrid beamforming transceiver. Each signal stream has an antenna weight vector (AWV) applied thereto by a digital keying phase shifter and is transmitted from the multi-antenna unit to the high-frequency physical propagation channel. At the receiving end, the RF signal streams received by the multi-antenna unit are weighted and combined into a single signal stream. The receiving end performs radio frequency demodulation, and the receiver finally obtains a plurality of receiving streams. This receiving stream is digitally baseband sampled and received. Therefore, the hybrid precoding (analog-digital hybrid beamforming) transceiver can simultaneously generate radio frequency beams directed in a plurality of directions.

[0077] At the same time, the transmitting end and the receiving end of the system can support better spatial division multiplexing and reduce the complexity of hardware implementation by having a plurality of panels. Therefore, on each panel, the number of effective beams is asymmetric with the maximum number of beams actually supported, that is, always, the number of beams that can be transmitted (the number of TXRUs) is significantly less than the number of candidate beams. In this case, the user must notify the base station side of its downlink and uplink capabilities.

[0078] From the perspective of the downlink, the base station first transmits a reference signal to the user terminal. Then, according to its own capabilities, the user terminal groups the reference signal related index information (e.g., CSI-RS resource indicator, CRI) in the form of, for example, {group index, {CRI1, channel state information}, …, {CRIx, channel state information}}, ….

[0079] Specifically, the reference signal related index includes at least one of the following or a combination thereof: reference signal configuration index, reference signal resource set index, reference signal resource index, reference signal port index, measurement restriction window index, time-frequency window index, and reporting configuration index. For example, when using CSI, it can be CSI resource setting ID + CSI resource set ID + CRI + MR window ID. Table 1 below is a schematic table showing beam grouping according to a preferred embodiment.

Table 1

[0080] The group index may be included in the grouped report, that is, it may be implicitly indicated according to a predetermined rule. For example, this rule can include the order explicitly configured by the base station and the report in the group format. In this way, the group index in the report can be implicitly obtained.

[0081] FIG. 3 is a schematic diagram showing reference signal transmission and channel related information feedback according to a preferred embodiment of the present disclosure. Specifically, a reference signal transmission end (for example, in the above embodiment, a base station end, a first communication node) transmits downlink reference signal allocation information to a reference signal reception end (for example, in the above embodiment, a user terminal, a second communication node), and then transmits a downlink reference signal. When the user terminal executes signal processing and is triggered by receiving a report format configuration, the user terminal reports back a set of reference signal related indexes and channel state information to the transmission side.

[0082] In the case of reference signal grouping or beam grouping, the grouping conditions include one or a combination of the following: reference signals within the same group cannot be received simultaneously, reference signals within different groups can be received simultaneously, reference signals within different groups can be received simultaneously, reference signals within different groups cannot be received simultaneously, reference signals within the same group cannot be multiplexed, reference signals within the same group can be multiplexed, reference signals within different groups cannot be multiplexed, reference signals within different groups cannot be transmitted simultaneously, reference signals within the same group can be transmitted.

[0083] For example, the reference signal transmission end can notify reference signal grouping according to the following rules {3, 4, 6}: {Reference signals within the same group can be received simultaneously, reference signals within the same group cannot be multiplexed, reference signals within different groups cannot be received simultaneously}.

[0084] This means that reference signals within the same group can be used simultaneously by the base station and can be space-division multiplexed. From an implementation perspective, each group corresponds to a combination of reference signals that can be seen by each panel-TXRU within the user terminal panel-TXRU group. Depending on the reception mode, the user can effectively arrange reference signals with relatively small crosstalk and it is easy to transmit the whole simultaneously. Based on this grouping information, the base station can clearly guide resource scheduling. Due to limitations on the capabilities of the UE, note that the UE can notify the base station end of the grouping conditions or combinations of grouping conditions that the UE supports, and the base station end can determine appropriate grouping criteria according to the capabilities notified by the UE.

[0085] The grouping criteria may be applied to multiple levels. For example, it includes first-level grouping criteria, or first-level and second-level grouping criteria for two-level grouping, or k-th level grouping criteria for K-level grouping, where K and k are integers greater than or equal to 1 and K is greater than or equal to k.

[0086] FIG. 4 is a schematic diagram showing a base station that notifies a user of a group index based on a preferred embodiment of the present disclosure. The base station may notify, in a reporting configuration, a group index corresponding to a group or a subset of the group index corresponding to the group in order to specify a particular group for feedback. The group index corresponding to the group or the subset of the group index corresponding to the group is a subset of a set of group indices. Further, the set of group indices may be configured by the base station representing specific characteristics of each group for a clear grouping notification. For example, the system can support user group feedback based on an index configured by the base station, and can support user group feedback without an index configured by the base station. In the absence of an index configured by the base station, the user can perform group feedback, and the base station can remap the reported group index and notify the user terminal.

[0087] FIG. 5 is a schematic diagram showing beam reporting with a reporting configuration according to a preferred embodiment of the present disclosure.

[0088] In a reporting configuration, when the base station indicates a subset of the group index corresponding to the group, the grouping information used in the report includes the indices within the subset or the indices obtained by renumbering the indices within the subset. For example, if the original index is {1, 4, 7, 9} and the renumbered index is {0, 1, 2, 3}, the user reports the renumbered index. When the base station indicates the group index corresponding to the group, the user does not report the group index.

[0089] According to the predefined or user-end reported grouping conditions and the number of supported groups, the base station end can negotiate with the user on the global index information of grouping. Based on the global index information of grouping, the base station can notify only a part of the grouping information it represents in each report. In this way, unnecessary beam reporting overhead can be effectively avoided, and from the perspective of standardization, the number of groups supported by each report can be made less than the number of groups supported by the standard. The base station can specify a part of the groups for feedback according to channel quality, BLER conditions, user feedback, and self-scheduling.

[0090] Furthermore, the base station end can define the constraint information in the beam reporting that the grouping needs to meet. The constraint information includes at least one of the following: the number of groups including the number of reported groups or the maximum number of groups that can be reported; or, a relative or absolute threshold for determining whether to report in the measurement metric, that is, if the measurement metric is lower than the threshold, the UE does not need to report the grouping; or, the Xth strongest beam grouping in the measurement metric; or, grouping of Y beams in descending order of strength in the measurement metric, X is an integer of 1 or more, or a set consisting of positive integers of 1 or more, and X is configured by the reference signal transmitting terminal or based on a predetermined rule; Y is an integer of 1 or more; The measurement metric can include at least one of BLER, CQI, received signal power, RSRP, RSRQ, channel capacity, signal-to-noise ratio at the receiving end, signal-to-noise ratio at the receiving end.

[0091] Considering that the beam information reflects the reference signal correlation index, the reporting configuration of the beam report needs to be associated with a set of reference signals called the reference signal configuration. It should be noted that the set of reference signals can correspond to information such as reference signal resources, reference signal resource sets, and reference signal antenna port configurations. Therefore, the beam report can include reports under various reporting configurations (e.g., grouping conditions, notification of group indices of grouping) of the same set of reference signals, so that the reference signal configuration is actually within the set of reference signal configurations, and the user can select one or more reference signals from the set of reference signals for feedback.

[0092] To support group reporting, the reference signal receiver notifies the reference signal transmitter of its capabilities including the following:

[0093] 1) Supported grouping conditions;

[0094] 2) The number of TXRUs in the group;

[0095] 3) The number of TXRUs of the reference signal related index in the group;

[0096] 4) The maximum number of layers in the group;

[0097] 5) The maximum number of layers of the reference signal related index in the group;

[0098] 6) The number of reported groups, or a set of the number of reported groups;

[0099] 7) The maximum number of supported groups;

[0100] 8) The maximum number of layers;

[0101] 9) The number or maximum number of reference signal resources or antenna ports measured simultaneously;

[0102] 10) The number of time-domain repetitions of a reference signal resource under measurement constraints or within a time-frequency measurement window;

[0103] 11) The number of time-domain units used by a reference signal resource under measurement constraints or within a time-frequency measurement window.

[0104] The time-domain unit includes the following: (M / N) of an OFDM (Orthogonal Frequency Division Multiplexing) symbol, an OFDM symbol, a slot, and a subframe. M and N are integers greater than or equal to 1.

[0105] The reference signal resources or antenna ports measured simultaneously have different QCL assumptions for different transmission beams. Therefore, the number or maximum number of reference signal resources or antenna ports measured simultaneously represents the ability of the UE to receive different transmission beams simultaneously, that is, the number of panels. However, under measurement constraints or within a time-frequency measurement window, the number of time-domain repetitions of a reference signal resource or the number of time-domain units used by a reference signal resource corresponds to the number of receive beams measured by the UE. Since all beam-related measurements are performed while transmitting and receiving beams, the user needs to notify the transmitter of the ability to transmit beams simultaneously and the requirements for the receive beams to be measured.

[0106] The user ability or set of abilities is notified by the reference signal transmitter or pre-configured.

[0107] The user ability or set of abilities may be transmitted before a set of reference signal-related indexes and channel state information; or,

[0108] The user capabilities or set of capabilities may be transmitted in the same format, subframe, or subframe group as the set of reference signal related indexes and channel state information, or may be transmitted after the set of reference signal related indexes and channel state information.

[0109] Since the channel state information related information can include various types of state information, it may have a specific report format. As an important indicator of beam characteristics, RSRP represents the channel quality strength on the current link (i.e., simple SISO), but cannot represent the capabilities on MIMO transmission. Therefore, the system needs to support at least one of the following modes or combinations thereof.

[0110] 1) RSRP and RI are transmitted in the same report format, slot, subframe, or slot / subframe bundling element.

[0111] RSRP and RI are transmitted to provide the received signal strength and the number of RIs supported under the reference signal indicated in the report. The number of RIs represents the limitation on the user-end capabilities (e.g., the ability to support RI) and also represents the channel support.

[0112] 2) RSRP and PMI are transmitted in the same report format, slot, subframe, or slot / subframe bundling element.

[0113] RSRP and PMI are transmitted to provide the received signal strength and the number of recommended precoding matrix indicators (PMI) under the reference signal indicated in the reporting. One reference signal resource, i.e., the CSI-RS resource, can support multiple antenna ports, and thus the user can obtain the recommended PMI from the measurement results of the reference signal.

[0114] 3) RSRP and Co-phasing are transmitted in the same report format, subframe, or slot / subframe bundling element.

[0115] Co-phasing can be regarded as a simplified version of PMI. That is, when the CSI-RS resource supports only two antenna ports (the default I path and Q path), co-phasing can be reported together with RSRP, and the PMI used for future data transmission can be directly reported to the transmitting terminal.

[0116] 4) RSRP and CQI are transmitted in different report formats.

[0117] In fact, there may be a conflict between beam reporting using RSRP and general CSI acquisition transmission without using RSRP. Therefore, prioritization of reporting is required. When a conflict occurs between the first type of reporting information and the second type of reporting information, the first type of report may be preferentially transmitted based on preset rules, or the second type of report may be preferentially transmitted based on preset rules.

[0118] The first type of report includes at least: the RSRP report.

[0119] The second type of report includes at least one of the RI, PMI, co-phasing, and CQI reports.

[0120] The reference signal transmitter may be configured in a low-priority transmission mode. That is, the reference signal receiver reports the beam only after the measurement conditions of the reference signal meet the reference signal quality conditions. The reference signal quality conditions and uplink transmission resources may be configured by the reference signal transmitter for the reference signal receiver. In addition to the case where the channel quality corresponding to the reference signal is lower than the threshold, when the channel quality corresponding to the reference signal is greater than the threshold (configurable by the base station), or when the grouping situation changes, the reference signal receiver can use the specified uplink resources (for example, scheduling-free uplink resources) to report, for example, grouping information. Further, in addition to the reference signal quality condition (referred to as the first condition), the reference signal receiver transmits a reference signal-related index under another condition (referred to as the second condition) related to the resource configuration and the receiver state or mode. For example, on the base station side, the time-frequency resources required to transmit information, the window in which the time-frequency resources arrive, and the synchronization state of the reference signal receiver are set.

[0121] Also, the reference signal receiver may request the reference signal transmitter to transmit a reference signal that meets the reference signal channel characteristic requirements among the reference signals indicated by the reference signal-related index in the report. This action may be performed by the base station notifying the user to be reported, or may be dynamically initiated by the user when the reference signal quality condition is met. The channel characteristic requirements include one of QCL and the channel characteristic requirements. The request may be triggered by the reference signal transmitter or transmitted by the reference signal receiver according to the conditions.

[0122] In summary, the conditions include one or a combination of the following:

[0123] 1) Lower than a predefined or set threshold;

[0124] 2) The difference from the highest reference signal quality is smaller than a predefined or configured threshold;

[0125] 3) The difference from the average of the N highest reference signal qualities is less than a predefined or configured threshold;

[0126] 4) The difference from the cell signal quality is less than a predefined or set threshold.

[0127] The channel quality can be an average, maximum, minimum, or weighted average in one or more time windows.

[0128] The reference signal includes one or more reference signal resources. The antenna ports of the same reference signal resource satisfy the spatial reception parameter QCL characteristic, or the antenna ports of the same reference signal resource do not satisfy the spatial reception parameter QCL characteristic. Whether the antenna ports of the same reference signal resource satisfy the spatial reception parameter QCL characteristic can be configured by the reference signal transmitter for the reference signal receiver or assumed according to a specified method (e.g., based on a graph, code division scheme, or the number of antenna ports of the reference signal). For example, when the number of antenna ports is less than 2, it can be assumed that the antenna ports of the same reference signal resource satisfy the spatial reception parameter QCL assumption; otherwise, this assumption may not be satisfied or may not be satisfied for the UE.

[0129] When the assumption of the spatial reception parameter QCL is satisfied, the set of reference signal related indexes and channel state information includes at least the reference signal resource index;

[0130] When the assumption of the spatial reception parameter QCL is not satisfied, the set of reference signal related indexes and channel state information includes at least the following: reference signal port index, reference signal port index, reference signal resource index.

[0131] FIG. 6 is a schematic diagram showing a code division multiplexing (CDM) antenna port according to a preferred embodiment of the present disclosure.

[0132] The Doppler shift has different effects on the reference signal under code division multiplexing, so the orthogonality of the codes cannot be guaranteed in CDM (including TD-CDM, FD-CDM, or a combination thereof). In this case, different beams arrive in different directions, resulting in different Doppler shifts. Therefore, the spatial reception characteristic QCL is assumed in order to apply CDM to the antenna ports within the reference signal resource. That is, the transmission beams are the same or similar. That is, when CDM is used on the antenna ports within the reference signal resource, the spatial reception parameter QCL is assumed for the antenna ports.

[0133] Only after X time elements after the reference signal is configured, or X time elements following the positive response of the terminal, can the reference signal be used by the receiving terminal to report a set of reference signal related indexes and channel state information. The time elements are, for example, OFDM symbols, slots, subframes.

[0134] In uplink beam management, the precoding and beam of the uplink reference signal are either indicated by the base station or the user can select the precoding and beam of the uplink reference signal using a mode that is transparent to the base station. The base station (i.e., the uplink reference signal receiver) determines the configuration of the uplink reference signal without being aware of the capabilities and requirements of the user equipment. Therefore, the user needs to notify or request the configuration of a certain uplink reference resource. That is, the terminal transmits uplink reference signal resource related information. Specifically, the signal includes at least one of the following:

[0135] 1) Grouping related information. The grouping related information includes one or more of the following: group index, uplink reference signal resource index, uplink reference signal resource set index, uplink reference signal resource antenna port index, window index. The group index may be an uplink group index or a downlink group index.

[0136] 2) The maximum number of layers for each group, 3) The maximum number of layers of the uplink reference signal, 4) Uplink reference signal configuration requirement information, 5) Uplink reference signal capability information, 6) Uplink reference signal configuration requirement information and / or uplink reference capability information when the grouping is configured by the base station or reported by the user, 7) Uplink reference signal configuration requirement information when the reference signal related index is configured by the base station or reported by the user;

[0137] 8) Uplink reference signal setting requirement information when using a spatial filter that is the same as or similar to that for the reference signal configured by the base station or notified by the user.

[0138] The uplink reference signal configuration requirement includes at least one of the following: the type of the uplink reference signal, the number of antenna ports of the uplink reference signal resource, the number of uplink reference signal resources, the number of uplink reference signal resource sets.

[0139] The uplink reference signal capability information includes at least one of the following: the number of TXRUs; the maximum number of antenna ports of the uplink reference signal resource; the maximum number of layers; the number of notified groups, or the number of sets of notified groups; the maximum number of supported groups; the number of reference signal resources or antenna ports that can be transmitted simultaneously, the number of uplink reference signal resources; the maximum number of supported uplink reference signal resources; the time domain repetition number of the uplink reference signal resources.

[0140] Based on the grouping-related information, the user groups and classifies the uplink reference signals. The grouping conditions corresponding to the grouping-related information include one or a combination of the following: reference signals within the same group cannot be transmitted simultaneously; more than P reference signals within the same group cannot be transmitted simultaneously; reference signals within the same group can be transmitted simultaneously; reference signals in different groups cannot be transmitted simultaneously; more than Q reference signals in different groups cannot be transmitted simultaneously; reference signals in different groups can be transmitted simultaneously. P and Q are integers greater than or equal to 1. Also, P and Q are notified from the base station to the terminal.

[0141] The grouping-related information here is information regarding the grouping of uplink reference signals as shown in Table 1. According to this information, for example, the grouping of reference signals is based on the rule that reference signals within the same group cannot be transmitted simultaneously, while reference signals in different groups can be transmitted simultaneously. However, for each group, along with the uplink grouping, the maximum number of layers of the group is notified to the base station. Table 2 shows the uplink reference signal grouping according to a preferred embodiment. [Table 2]

[0142] The uplink reference signals can include at least one of UL DMRS, SRS, and PTRS. The uplink reference signal configuration requirement information includes at least one or a combination of the following: the type of uplink reference signal, the number of antenna ports of the uplink reference signal resource, the number of uplink reference signal resources, and the number of sets of uplink reference signal resources.

[0143] In the case of mutual identification or beam correspondence, the downlink grouping information can be applied to uplink grouping. For example, the base station can notify the transmission of a reference signal related to the downlink grouping index.

[0144] The base station transmits uplink reference signal configuration related signaling including group index indication information to the terminal. Furthermore, the terminal can transmit a reference signal according to the group index indication.

[0145] First, assume that the base station side adopts full digital beamforming technology and can transmit CRI-0 to CRI-31 simultaneously. The base station side transmits CRI-0 to CRI-31 downlink CSI-RS reference signals, and the UE side supports only two panels, and each panel can transmit or receive only one beam at a time. For the uplink reference signal, panel a may transmit SRI-0 to SRI-7, and panel b may transmit SRI-9 to SRI-14.

[0146] FIG. 7 is a schematic diagram showing uplink and downlink reference signal grouping in the case of beam correspondence according to a preferred embodiment of the present disclosure. In the case of downlink beam measurement, reference signals within the same group can be received simultaneously, but reference signals in different groups cannot be received simultaneously. The user terminal reports the following grouping information to the base station side.

[0147] Table 3 shows downlink grouping according to a preferred embodiment.

Table 3

[0148] Therefore, when transmitting an uplink reference signal, the base station can notify the uplink reference signal by specifying a CRI index. However, when further specifications of the uplink reference signal are required, the base station can configure the SRS reference signal to transmit a user group index 1, and obtain the number of SRS reference signal resources of the UE corresponding to the group index 1 (for example, 8). The base station can configure the allocation of 8 aperiodic SRS resources for uplink reporting to the user. The user can then transmit reference signals corresponding to SRI0-7. It is assumed that the base station cannot transmit uplink reference signal resources corresponding to SRI0-7 simultaneously. Therefore, during uplink data transmission, the user does not assume that the reference signals corresponding to SRI0-7 are transmitted simultaneously, or simultaneously with other reference signals that satisfy QCL, or using the same filter as SRI0-7.

[0149] FIG. 8 is a schematic diagram showing uplink reference signal grouping in the case of non-beam correspondence according to a preferred embodiment of the present disclosure. (Uplink beam training needs to be executed independently) In the case of non-beam correspondence, the user reports its uplink beam transmission ability to the base station. Table 4 below is an example showing downlink reference signal grouping ability reporting.

Table 4

[0150] Therefore, the base station can allocate two SRS reference signal resource sets to the user, and each reference signal resource set includes 8 reference signal resources. Further, in each reference signal combination, the reference signal resources are separated on different time domain units, and further, the reference signal resources of different reference signal resource sets can be allocated on the same time domain resource.

[0151] Therefore, the UE transmits two reference signal resource sets separately, one corresponding to SRI0 to 7 and the other corresponding to SRI8 to 16. On the base station side, when performing channel measurement, SRI-1, SRI-8, and SRI-14 are selected for uplink transmission. However, SRI-8 and SRI-14 cannot be used simultaneously for the same transmission.

[0152] The reference signal resource configuration information transmitted by the base station while setting the uplink reference signal for the user includes grouping-related information. Furthermore, the grouping-related information can be configured for a reference signal resource set, or a reference signal resource, or an antenna port of a reference signal resource. The configuration of the grouping-related information indicates the association between the grouping-related information and the configured reference signal resource set, or reference signal reference, or signal resource antenna port. Association means that two associated parties meet the channel characteristic requirements or use the same transmission or reception scheme (for example, transmit signals on the same user terminal panel).

[0153] In summary, the technical solution provided by the embodiments of the present disclosure supports the reporting by the reference signal receiving end with its own ability so that the reference signal transmitting end can notify beam reporting according to beam grouping or user capabilities, and solves the conflict between beam-related reporting and conventional channel state information reporting. In particular, in the case of device rotation or link failure, the technical solution supports the reference signal receiving end to request the reference signal transmitting end to perform partial beam training for a part of the beam, thereby effectively achieving high beam-related information reporting in different base stations, different base stations and user capabilities, and different scenarios.

[0154] A person skilled in the art will understand that all or part of the above steps can be implemented by a program that instructs related hardware, and this program is stored in a computer-readable storage medium such as a read-only memory, a magnetic disk, or an optical disk. In some embodiments, all or part of the steps of the foregoing embodiments can also be implemented by using one or more integrated circuits. Therefore, each module / unit in the foregoing embodiments may be implemented in the form of hardware or software. The present invention is not limited to any specific form of the combination of hardware and software.

[0155] It should be understood that various modifications and improvements can be made to the present invention without departing from the scope of the present invention. The corresponding changes and modifications are intended to be included within the scope of the appended claims.

[0156] The above technical solution supports the report by the reference signal receiving end with its own ability so that the reference signal transmitting end can notify the beam report according to beam grouping or user capabilities, and solves the collision between the beam-related report and the conventional channel state information report. In particular, in the case of device rotation or link failure, the technical solution supports the reference signal receiving end to request the reference signal transmitting end to perform partial beam training for a part of the beam, thereby effectively achieving high beam-related information reporting in different base stations, different base stations and user capabilities, and different scenarios.

[0157] Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software and the necessary general hardware platform, and of course, it can also be implemented through hardware. In many cases, however, the former is a better implementation. Based on such an understanding, the technical solution of the present invention is essential or contributory to the prior art, and can be implemented in the form of a software product stored in a storage medium (such as ROM / RAM, disk, optical disk, etc.), and can include several instructions for causing a terminal device (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0158] <Embodiment 2>

[0159] According to an embodiment of the present disclosure, an apparatus for information reporting is provided, which is used to implement the above-described embodiments and preferred embodiments and will not be described again. As used below, the term "module" can implement a combination of software and / or hardware with a predetermined function. The devices described in the following embodiments are preferably implemented by software, but can also be implemented by hardware or a combination of software and hardware.

[0160] An apparatus for information reporting according to an embodiment of the present disclosure applicable in a second communication node is provided: The apparatus has the following: A first receiving module configured to receive a reference signal from a first communication node and determine a reference signal-related index and / or channel state information; A reporting module configured to report a set to the first communication node, where the set includes at least one of the reference signal-related index and the channel state information.

[0161] According to another embodiment of the present disclosure, an apparatus for applicable information transmission in a second communication node is provided. The apparatus has the following: A determination module configured to determine reference signal resource related information to be transmitted to a first communication node; A first transmission module configured to transmit the related information to the first communication node.

[0162] According to another embodiment of the present disclosure, an apparatus for applicable information reporting in a first communication node is provided. The apparatus has the following: A second communication module configured to transmit reference information to a second communication node, the second communication module determining a reference signal related index and / or channel state information according to a reference signal; A second reception module configured to receive a set reported by the second communication node, the set including at least one of the reference signal related index and the channel state information.

[0163] Each of the above modules may be implemented by software or by hardware. In the latter case, the foregoing may be implemented by providing the foregoing modules to the same processor or providing the foregoing modules in any combination to different processors, but is not limited thereto.

[0164] <Embodiment 3>

[0165] According to an embodiment of the present disclosure, a processor for executing a program is provided, and when the program is executed, it executes any of the methods of the above alternative embodiments.

[0166] <Embodiment 4>

[0167] According to an embodiment of the present disclosure, a storage medium storing a program is provided, and when the program is executed, it executes any of the methods according to the above alternative embodiments.

[0168] It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. In some embodiments, they may be implemented in program code executable by a computing device, and as a result, they may be stored in a storage device for execution by the computing device, and in some cases, may be different. The steps illustrated or described may be executed continuously, or separately manufactured in individual integrated circuit modules, or a plurality of modules or steps thereof may be manufactured as a single integrated circuit module. Accordingly, the present invention is not limited to any particular combination of hardware and software.

[0169] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

1. A method for information transmission, comprising: determining, by a second communication node, reference signal resource related information to be transmitted to a first communication node; transmitting the related information to the first communication node. The method is characterized by the above.

2. The reference signal resource related information includes: grouping related information; the maximum number of layers within a group; the maximum number of layers of an uplink reference signal; the maximum number of layers of a downlink reference signal; uplink reference signal capability information; uplink reference signal configuration request information; uplink or downlink reference signal capability information of a first group, where the first group is configured by the first communication node or reported by the second communication node; uplink or downlink reference signal configuration request information of a second group, where the second group is configured by the first communication node or reported by the second communication node; uplink reference signal configuration request information corresponding to an uplink reference signal related index or downlink reference signal configuration request information corresponding to a downlink reference signal related index, where the uplink or downlink reference signal related index is uplink or downlink reference signal configuration request information configured by the first communication node or reported by the second communication node; uplink reference signal configuration request information when the same or a similar spatial filter as that used for the uplink reference signal is used, or uplink reference signal configuration request information satisfying channel characteristic requirements; or downlink reference signal configuration request information when the same or a similar spatial filter as that used for the downlink reference signal is used, where the uplink or downlink reference signal is configured by the first communication node or reported by the second communication node, and the uplink or downlink reference signal configuration request information; including at least one of the above; the channel characteristic requirements include one of quasi - co - location (QCL) or spatial reception parameter requirements. The reference signal related index includes at least one of a reference signal configuration index, a reference signal resource set index, a reference signal resource index, a reference signal port index, a measurement restriction window index, a time-frequency window index, and a reporting configuration index. The method according to claim 1.

3. The uplink reference signal is uplink demodulation reference signal (UL DMRS); SRS (Sounding Reference Signal), PTRS (Phase Tracking Reference Signal), and includes at least one of them. The method according to claim 2.

4. The second communication node, as a grouping condition, cannot simultaneously transmit different reference signals within the same group, or the second communication node does not prioritize or support different reference signals within the same group that notify the same transmission; can simultaneously transmit reference signals in different groups, or the second communication node supports different reference signals in different groups that notify the same transmission; group the uplink reference signals according to at least one of them. The method according to claim 2.

5. The second communication node, as a grouping condition, cannot simultaneously transmit more than P different reference signals within the same group, or the second communication node does not prioritize or support more than P different reference signals within the same group that notify the same transmission; cannot simultaneously transmit more than Q reference signals in different groups, or the second communication node does not prioritize or support more than Q different reference signals in different groups that notify the same transmission; group the uplink reference signals by at least one of them, where P and Q are integers greater than or equal to 1. The method according to claim 2.

6. The second communication node, as a grouping condition, Different reference signals within the same group can be transmitted simultaneously, or the second communication node supports different reference signals within the same group that are notified for the same transmission; different reference signals within different groups cannot be transmitted simultaneously, or the second communication node does not prioritize or support different reference signals within different groups that are notified for the same transmission; grouping uplink reference signals by at least one of; The method according to claim 2.

7. The method further comprises the step of the second communication node notifying P or Q to the first communication node. The method according to claim 5.

8. The same transmission includes the transmission of different reference signals occurring simultaneously at at least one given time. The method according to any one of claims 4 to 6.

9. The uplink reference signal configuration related signaling received by the second communication node includes group index notification information. The method according to claim 1.

10. The method further comprises the step of the second communication node transmitting uplink reference signals according to the group index notification information. The method according to claim 9.

11. The grouping related information is group index, uplink reference signal resource index, uplink reference signal resource set index, uplink reference signal resource antenna port index, antenna port index, window index, including at least one of; The group index includes at least one of an uplink group index and a downlink group index. The method according to claim 2.

12. The uplink reference signal configuration requirement information is type of uplink reference signal, number of antenna ports of the uplink reference signal resource, number of antenna ports, number of uplink reference signal resources, number of uplink reference signal resource sets, including at least one of; The method according to claim 2.

13. The uplink reference signal capability information is number of TXRUs; maximum number of antenna ports of the uplink reference signal resource; maximum number of layers; number of groups notified, or number of sets of groups notified; maximum number of groups supported; The number or maximum number of reference signal resources or antenna ports that can be transmitted simultaneously; The number or maximum number of uplink reference signal resources, The number of time-domain repetitions of the uplink reference signal resources, including at least one of the above, The method according to claim 2.

14. The method further includes, a step of receiving, by the second communication node, reference signal resource configuration information from the first communication node, where the reference signal resource configuration information includes the grouping-related information, The method according to claim 2.

15. The grouping-related information is configured for a reference signal resource set, a reference signal resource, or an antenna port of a reference signal resource, The method according to claim 2.

16. A method for information reporting, comprising: a step of receiving, by a second communication node, a reference signal from a first communication node and determining a reference signal-related index and / or channel state information; a step of reporting, by the second communication node, a set to the first communication node, where the set includes at least one of a reference signal-related index or channel state information, A method having the above steps.

17. The set includes Q groups, and each of the groups includes at least one of a group index, a reference signal-related index, and channel state information, The reference signal-related index includes at least one of a reference signal configuration index, a reference signal resource set index, a reference signal resource index, a reference signal port index, a measurement limit window index, a time-frequency window index, and a reporting configuration index, The channel state information includes at least one of a channel quality indicator (CQI), a rank indicator (RI), a reference signal received power (RSRP), a precoding matrix indicator (PMI), and phase information (co-phasing), Q is an integer greater than or equal to 1, The method according to claim 16.

18. The method further includes a step of receiving, by the second communication node, configuration information for reporting the set, The configuration information is, The group index corresponding to the group, a subset of the group index corresponding to the group, the group index corresponding to the group, or a subset of the group index corresponding to the group is a subset of the set of group indices; Grouping constraint information; Grouping condition; Reference signal configuration; including at least one of; The method according to claim 17.

19. The grouping constraint information is The number of groups; A relative or absolute threshold for determining whether the second communication node reports the set in a measurement metric; The Xth strongest beam grouping in a measurement metric; Y beam groupings in order of strength in a measurement metric; including at least one of X is an integer greater than or equal to 1, or X is a set consisting of positive integers greater than or equal to 1, and X is configured by or pre-configured by the first communication node, Y is an integer greater than or equal to 1, The method according to claim 18.

20. The set of group indices corresponding to the group is configured by the first communication node, The method according to claim 18.

21. When the configuration information includes a subset of the group index corresponding to the group, the second communication node uses grouping information including an index within the subset of the group index corresponding to the group, an index obtained by re-numbering the index within the subset of the group index corresponding to the group, to report the set, or when the configuration information includes a subset of the group index corresponding to the group, the second communication node does not report the group index, The method according to claim 18.

22. The grouping condition is whether reference signals within the same group cannot be received simultaneously at the second communication node, or whether reference signals within the same group can be received simultaneously at the second communication node; whether reference signals from different groups can be received simultaneously at the second communication node, or whether reference signals from different groups cannot be received simultaneously at the second communication node; whether reference signals within the same group cannot be multiplexed, or whether reference signals within the same group can be multiplexed; Reference signals of different groups cannot be multiplexed, or reference signals of different groups can be multiplexed; Reference signals within the same group are not transmitted simultaneously by the first communication node, or reference signals within the same group are not transmitted simultaneously by the first communication node; including at least one of; The grouping condition includes a first-level grouping condition, or a first-level and a second-level grouping condition for two-level grouping, or a k-th level grouping condition for K-level grouping, where K and k are integers greater than or equal to 1, and K is greater than or equal to k; The method according to claim 18.

23. Before the second communication node receives the reference signal from the first communication node, the method further comprises, by the second communication node, to the first communication node, Grouping conditions supported by the second communication node; The number of TXRUs within a group; The number of TXRUs of the reference signal-related index within a group; The maximum number of layers within a group; The maximum number of layers of the reference signal-related index within a group; The number of reported groups, or a set of the number of reported groups; The maximum number of supported groups; The maximum number of layers of the second communication node; The number or maximum number of reference signal resources or antenna ports measured simultaneously; The number of time-domain repetitions of the reference signal resource under measurement constraints or within a time-frequency measurement window; The number of time-domain units occupied by the reference signal resource under measurement constraints or within a time-frequency measurement window; including the step of transmitting at least one of; The method according to claim 16.

24. The time-domain unit is (M / N) of an OFDM (Orthogonal Frequency Division Multiplexing) symbol, an OFDM symbol, a slot, a subframe, including any one of; where M and N are integers greater than or equal to 1; The method according to claim 23.

25. The second communication node transmits RSRP and RI in the same report format, slot, subframe, or slot / subframe bundling element; transmits RSRP and PMI in the same report format, slot, subframe, or slot / subframe bundling element; Transmitting RSRP and Co-phasing with the same report format, subframe or slot / subframe bundling element; Transmitting RSRP and CQI with different report formats; Supporting at least one of the modes of, The method according to claim 16.

26. The step of reporting the set to the first communication node by the second communication node is, The step of reporting first type report information and second type report information to the first communication node by the second communication node, When there is a conflict between the first type report information and the second type report information, preferentially transmitting the first type report information based on a preset rule, or preferentially transmitting the second type report information based on a preset rule, Having, The first type report information includes at least an RSRP report, The second type report information includes at least one report of RI, PMI, co-phasing, CQI, The method according to claim 16.

27. The step of reporting a set to the first communication node by the second communication node is, The step of reporting a reference signal related index to the first communication node by the second communication node, wherein the reference signal related index reported by the second communication node is associated with a channel quality satisfying a first predetermined condition; or the reference signal related index is configured to request the first communication node to transmit a reference signal having channel characteristics, the channel characteristics satisfy a reference signal channel characteristic requirement indicated by the reference signal related index, and the reference signal channel characteristic requirement includes any one of QCL or spatial reception parameter requirements, Having, The method according to claim 16.

28. The step of reporting the reference signal related index by the second communication node is triggered by the first communication node or by the second communication node satisfying a second specified condition, The method according to claim 27.

29. The first specified condition is, The channel quality related to the reference signal related index is lower than a predefined or configured threshold; The difference between the channel quality associated with the reference signal related index and the highest reference signal quality measured at the second communication node is lower than a predefined or configured threshold; The difference between the channel quality associated with the reference signal related index and the average of the N highest reference signal qualities is lower than a predefined or configured threshold; The difference between the channel quality associated with the reference signal related index and the cell signal quality is lower than a predefined or configured threshold; including at least one of The method according to claim 27.

30. The channel quality is the average, highest, lowest, or weighted average of the channel quality in one or more time windows. The method according to claim 27.

31. The reference signal includes one or more reference signal resources. The antenna ports of the same reference signal resource satisfy the channel characteristic requirements, or the antenna ports of the same reference signal resource do not satisfy the channel characteristic requirements. The method according to claim 16.

32. Whether the antenna ports of the same reference signal resource satisfy the channel characteristic requirements is configured by the first communication node for the second communication node or determined by the second communication node according to the graph of the reference signal, the code division method of the reference signal, or the number of antenna ports of the reference signal. The method according to claim 31.

33. When the antenna ports of the same reference signal resource satisfy the channel characteristic requirements, the set of the reference signal related index and the channel state information includes at least the reference signal resource index. When the antenna ports of the same reference signal resource do not satisfy the channel characteristic requirements, the set of the reference signal related index and the channel state information includes at least one of the reference signal port index, the reference signal port index, and the reference signal resource index. The method according to claim 32.

34. When the antenna ports of the same reference signal resource are code division multiplexed, the spatial reception parameters of the antenna ports satisfy the QCL assumption. The method according to claim 31.

35. After X time elements following the reference signal constituted by the first communication node, or after X time elements following the positive response of the second communication node, the reference signal is configured to instruct the second communication node to report the set including the reference signal related index and the channel state information. The time element includes at least one of an OFDM symbol, a slot, and a subframe. The method according to claim 16.

36. A method for information reporting, comprising: A step of transmitting reference information from a first communication node to a second communication node, wherein the second communication node determines a reference signal related index and / or channel state information according to the reference signal. A step of receiving a set reported by the second communication node, wherein the set includes at least one of the reference signal related index or the channel state information. A method characterized by comprising the above.

37. An apparatus for information reporting applicable to a second communication node, comprising: A first receiving module configured to receive a reference signal from a first communication node and determine a reference signal related index and / or channel state information. A reporting module configured to report a set to the first communication node, wherein the set includes at least one of a reference signal related index or channel state information. An apparatus characterized by comprising the above.

38. An apparatus for information transmission applicable to a second communication node, comprising: A determination module configured to determine reference signal resource related information to be transmitted to a first communication node. A first transmission module configured to transmit the related information to the first communication node. An apparatus characterized by comprising the above.

39. An apparatus for information reporting applicable to a first communication node, comprising: A second transmission module configured to transmit reference information to a second communication node, wherein the second communication node determines a reference signal related index and / or channel state information according to the reference signal. A second receiving module configured to receive the set reported by the second communication node, the set including at least one of a reference signal related index or channel state information; An apparatus characterized by comprising the same. **Claim 40** A storage medium storing a program for causing a computer to execute the method according to any one of claims 1 to 15, or a program for causing a computer to execute the method according to any one of claims 166 to 35, or a program for causing a computer to execute the method according to claim 36. **Claim 41** A processor for executing a program, which, when executed by the processor, causes the processor to execute the method according to any one of claims 1 to 15, the method according to any one of claims 16 to 35, or the method according to claim 36.

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