Terminal device, network device, and communication method executed thereby

Abstract

The embodiments of the present disclosure relate to a method, an apparatus, and a computer-readable medium for communication. According to the embodiments of the present disclosure, a terminal device transmits a channel state information (CSI) report to a network device, the report indicating a correspondence between reported values ​​of resources of a plurality of groups and a plurality of channel measurement resource (CMR) sets configured by the network device. Each of the plurality of groups includes resources selected from different channel measurement resource sets. Thus, uplink control information can be used to indicate CSI at the level of a beam pair having an appropriate payload size.

Description

Technical Field

[0001] Embodiments of the present disclosure generally relate to the field of telecommunications, and in particular, to methods, apparatuses, and computer storage media for communication.

Background Art

[0002] Multi-antenna schemes such as multi-transmit receive point (multi-TRP) transmission and / or multi-panel transmission are widely applied to New Radio access (NR) by multiple-input multiple-output (MIMO) technology. A network device may use a number of antenna elements to communicate with a terminal device.

[0003] In a multi-antenna scheme, a network device allocates a plurality of channel measurement resource (CMR) sets to a plurality of TRPs. From the perspective of a terminal device, the terminal device performs channel measurements on the CMR sets to find an optimal beam group suitable for multi-TRP. Then, the terminal device may report channel state information (CSI) to the network device. In order to improve the accuracy of the report, it is necessary to report CSI at the beam group level.

Summary of the Invention

Problems to be Solved by the Invention

[0004] Generally, embodiments of the present disclosure provide a method, an apparatus, and a computer storage medium for CSI reporting.

Means for Solving the Problems

[0005] In a first aspect, a communication method is provided. The method includes, at a terminal device, transmitting to a network device a channel state information (CSI) report indicating a correspondence between reported values of resources of a plurality of groups and a plurality of channel measurement resource sets configured by the network device, wherein each of the plurality of groups includes resources selected from different channel measurement resource sets.

[0006] In some exemplary embodiments, the correspondence is indicated by a first indicator in the CSI report. The first indicator indicates the channel measurement resource set from which the maximum value among the reported values is obtained.

[0007] In some exemplary embodiments, the correspondence is indicated by a second indicator in the CSI report. The second indicator indicates a target field for the maximum value among the reported values obtained from the channel measurement resource set.

[0008] In some exemplary embodiments, the CSI report includes, for indicating the correspondence, an absolute value of a measurement result of resources of a first group among the plurality of groups, the larger one of the reported values, and a reported difference between the measurement results of the remaining resources among the plurality of groups.

[0009] In some exemplary embodiments, the CSI report indicates a correspondence between resources of a plurality of groups and a reported value determined based on an average measurement result of the resources of the plurality of groups.

[0010] In some exemplary embodiments, transmitting the CSI report comprises transmitting a first portion of the CSI report that includes a third indicator indicating the presence of a second portion of the CSI report, wherein the first portion of the CSI report indicates a part of the reported values, and transmitting a second portion of the CSI report indicating the remaining reported values.

[0011] In some exemplary embodiments, the CSI report includes, for indicating a correspondence, a first reported value for the maximum measurement result among the measurement results of each group of resources, the maximum measurement result, and a reported difference between the maximum measurement result and the remaining measurement results of each group of resources.

[0012] In some exemplary embodiments, at least one of the resources corresponds to two or more of the groups, the correspondence is indicated by a plurality of fields in the CSI report, and the plurality of fields indicate at least one reported value of the measurement results of the at least one of the resources.

[0013] In some exemplary embodiments, the method further comprises transmitting, to the network device, capability information of the terminal device regarding channel measurement, receiving, from the network device, a measurement setting for the channel measurement resource set based on the capability information, and obtaining measurement results of the resources of the plurality of groups based on the measurement setting, wherein the reported values are determined based on the measurement results.

[0014] In some embodiments, the reported values include at least one of an absolute value or a difference value determined based on a reference signal received power (RSRP), a reference signal received quality (RSRQ), or a signal-to-interference-plus-noise ratio (SINR) measured from a reference signal.

[0015] In a second aspect, a communication method is provided. The method includes, at a network device, receiving, from a terminal device, a channel state information (CSI) report indicating a correspondence between reported values of resources of a plurality of groups and a plurality of channel measurement resource sets configured by the network device, where each of the plurality of groups includes resources selected from different channel measurement resource sets.

[0016] In some exemplary embodiments, the correspondence is indicated by a first indicator in the CSI report, and the first indicator indicates the channel measurement resource set from which the maximum value among the reported values is obtained.

[0017] In some exemplary embodiments, the correspondence is indicated by a second indicator in the CSI report, and the second indicator indicates a target field for the maximum value among the reported values obtained from a channel measurement resource set.

[0018] In some exemplary embodiments, the CSI report includes, for indicating the correspondence, a reported value for a measurement result of resources of a first group among the plurality of groups, the greater of the reported values, and a reported difference between the reported value and measurement results of the remaining resources of the plurality of groups.

[0019] In some exemplary embodiments, the CSI report indicates a correspondence between resources of a plurality of groups and a reported value determined based on an average measurement result of the resources of the plurality of groups.

[0020] In some exemplary embodiments, receiving the CSI report comprises receiving a first portion of the CSI report that includes a third indicator indicating the presence of a second portion of the CSI report, the first portion of the CSI report including indicating a part of the reported value, and receiving the second portion of the CSI report indicating the remaining reported values.

[0021] In some exemplary embodiments, the CSI report includes, for indicating a correspondence relationship, a first reported value for the maximum measurement result among the measurement results of each group of resources, the maximum measurement result, and a reported difference between the maximum measurement result and the remaining measurement results of each group of the resources.

[0022] In some exemplary embodiments, at least one of the resources corresponds to two or more of the groups, the correspondence relationship is indicated within the CSI report, and the plurality of fields indicate at least one reported value of the measurement results of the at least one of the resources.

[0023] In some exemplary embodiments, the method includes receiving, from the terminal device, capability information of the terminal device regarding channel measurement, and based on the capability information, sending, to the terminal device, measurement settings for the channel measurement resource set.

[0024] In some embodiments, the reported value includes at least one of an absolute value or a difference value determined based on a reference signal received power (RSRP), a reference signal received quality (RSRQ), or a signal-to-interference-and-noise ratio (SINR) measured from a reference signal.

[0025] In a third aspect, a terminal device is provided. The terminal device includes a processor and a memory coupled to the processor. The memory stores instructions that, when executed by the processor, cause the terminal device to execute the method described in the first aspect of the present disclosure.

[0026] In a fourth aspect, a network device is provided. The network device includes a processor and a memory coupled to the processor. The memory stores instructions that, when executed by the processor, cause the network device to execute the method described in the second aspect of the present disclosure.

[0027] In a fifth aspect, a computer-readable medium storing instructions is provided. The instructions, when executed on at least one processor, cause the at least one processor to execute the method described in the first or second aspect of the present disclosure.

[0028] In a sixth aspect, a terminal device is provided. The terminal device includes a circuit configured to execute the method according to the first aspect of the present disclosure.

[0029] In a seventh aspect, a terminal device is provided. The network device includes a circuit configured to execute the method according to the second aspect of the present disclosure.

[0030] Other features of the present disclosure should be easily understood from the following description.

Brief Description of the Drawings

[0031] Some embodiments of the present disclosure will be described in more detail in the accompanying drawings, so that the above and other objects, features, and advantages of the present disclosure will become more apparent.

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[0038] In the figures, the same or similar reference numerals represent the same or similar elements.

DETAILED DESCRIPTION OF THE INVENTION

[0039] Here, the principles of the present disclosure will be explained with reference to some embodiments. It should be understood that these embodiments are described for illustrative purposes only and are intended to assist those skilled in the art in understanding and implementing the present disclosure, without suggesting any limitation on the scope of the present disclosure. The disclosure content described herein can be implemented in various ways different from the methods described below.

[0040] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art of the present disclosure.

[0041] As used herein, the term "terminal device" means any device having wireless or wired communication capabilities. Examples of terminal devices include, but are not limited to, user equipment (UE), personal computer, desktop computer, mobile phone, cellular phone, smartphone, personal digital assistant (PDA), portable computer, tablet, wearable device, Internet of Things (IoT) device, any Internet of Everything (IoE) device, machine type communication (MTC) device, in-vehicle device for vehicle-to-everything (V2X) communication, etc. Here, "X" in V2X represents a pedestrian, a vehicle, or infrastructure / network, or an image acquisition device such as a digital camera, a game device, a music storage and playback device, or an Internet appliance enabling wireless or wired Internet access and browsing. The term "terminal device" may be used interchangeably with UE, mobile station, subscriber station, mobile terminal, user terminal, or wireless device. Also, the term "network device" means a device that can provide or host a cell or coverage with which a terminal device can communicate. Examples of network devices include, but are not limited to, Node B (NodeB or NB), evolved Node B (eNodeB or eNB), next-generation Node B (gNB), transmission and reception point (TRP), remote radio unit (RRU), radio head (RH), remote radio head (RRH), femto node, pico node, and other low-power nodes.

[0042] In one embodiment, the terminal device can be connected to a first network device and a second network device. One of the first network device and the second network device may be a master node, and the other may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs). In one embodiment, the first network device may be a first RAT device, and the second network device may be a second RAT device. In one embodiment, the first RAT device is an eNB, and the second RAT device is a gNB. Information regarding different RATs may be transmitted from at least one of the first network device and the second network device to the terminal device. In one embodiment, the first information may be transmitted from the first network device to the terminal device, and the second information may be transmitted from the second network device directly or via the first network device to the terminal device. In one embodiment, information regarding the settings of the terminal device set by the second network device may be transmitted from the second network device via the first network device. Information regarding the re - settings of the terminal device set by the second network device may be transmitted from the second network device directly or via the first network device to the terminal device.

[0043] As used herein, the singular forms "a", "an", and "the" include the plural forms as well, unless the context clearly dictates otherwise. The terms "comprising" and its variants should be understood as open - ended terms meaning "including, but not limited to". The term "based on" should be understood as "at least partially based on". The terms "one embodiment" and "an embodiment" should be understood as "at least one embodiment". The term "another embodiment" should be understood as "at least one other embodiment". Terms such as "first", "second", etc. may refer to different or the same objects. There may be other explicit and implicit definitions below.

[0044] In some instances, values, procedures, or devices are referred to as "best," "lowest," "highest," "minimum," "maximum," and the like. Such descriptions are intended to indicate that a selection can be made from among a number of available functional alternatives, and it should be understood that such a selection need not be better, smaller, higher, or otherwise preferable to other selections.

[0045] As used herein, the term "circuit" can mean a hardware circuit and / or a combination of a hardware circuit and software. For example, a circuit may be an analog and / or digital hardware circuit in combination with software / firmware. As yet another example, a circuit may be any portion of a hardware processor having software including a digital signal processor, software, and one or more memories that cooperate to cause a device such as a terminal device or a network device to perform various functions. In yet another example, a circuit may be a hardware circuit and / or a processor such as a microprocessor or a portion thereof that requires software / firmware for operation, although the software need not be present if not required for operation. As used herein, the term "circuit" also includes a hardware circuit or only one or more processors, or a portion of a hardware circuit or one or more processors, and the implementation of its (or their) accompanying software and / or firmware.

[0046] As used herein, the term "TRP" means an antenna array (having one or more antenna elements) that is available to a network device located at a particular geographical location. Although some embodiments of the present disclosure have been described with reference to multi-TRP as an example, these embodiments are for illustrative purposes only, to assist those skilled in the art in understanding and implementing the present disclosure, and do not imply any limitation as to the scope of the present disclosure. It should be understood that the content of the present disclosure described herein can be implemented in various ways different from the methods described below.

[0047] Hereinafter, the terms "PUSCH transmission", "PUSCH transmission occasion", "uplink transmission", "PUSCH repetition", "PUSCH occasion", and "PUSCH reception" may be used interchangeably. The terms "transmission", "transmission occasion", and "repetition" may be used interchangeably. The terms "precoder", "precoding", "precoding matrix", "beam", "spatial relation information", "spatial relation info", "TPMI", "precoding information", "precoding information and number of layers", "precoding matrix indicator (PMI)", "precoding matrix indicator", "transmission precoding matrix support", "precoding matrix indication", "TCI state", "transmission configuration indicator", "quasi co-location (QCL)", "quasi-co-location", "QCL parameter", and "spatial relation" may be used interchangeably. The terms "SRI", "SRS resource set index", "UL TCI", "UL spatial region filter", "UL beam", "combined TCI" may be used interchangeably.

[0048] Generally speaking, one TRP usually corresponds to one resource set. As used herein, the term "single TRP" means that a single CMR set is used to perform related channel measurements (e.g., PUSCH transmission), and the term "multi-TRP" means that multiple CMR sets are used to perform related channel measurements.

[0049] In a conventional communication network, before CSI reporting, the terminal device may notify the network device of the terminal device's capabilities regarding channel measurements. The network device may set CSI-related settings based on the capabilities of the terminal device and then transmit the CSI-related settings to the terminal device via a radio resource control (RRC) message. The terminal device may then perform beam measurements and CSI reporting by using the CSI-related settings. Typically, CSI reporting corresponds to a single CSI resource set, e.g., a CMR set. A CSI report in a conventional format may include, for example, a CSI reference signal resource indicator (CRI), an SS / PBCH block resource indicator (SSB-RI), and a reported value determined based on the measurement results of the CSI resource set. The reported value may include, for example, the highest measurement result such as reference signal received power (RSRP), reference signal received quality (RSRQ), or signal to interference plus noise ratio (SINR) measured from a reference signal, and a 7-bit value indicating at least one reported difference between the larger of the reported values and the remaining measurement results. The quantization range within a single group of resources is 30 dB.

[0050] In Release-17, multi-TRP transmission is supported to improve communication between a network device and a terminal device. In this case, the network device may set a plurality of CSI resource sets for a plurality of TRPs, and each of the CSI resource sets may include a plurality of resources. To find an optimal beam suitable for a plurality of TRPs, the terminal device may perform beam measurements on different groups of resources including resources selected from different CSI resource sets.

[0051] For example, the network device may set two CMR sets for two TRPs, and each of the CMR sets may include a plurality of resources, for example, eight resources. The terminal device may perform beam measurements on the set CMR sets and report two groups of resources selected from the CMR sets. In this example, two groups of resources or beam groups are reported via a single CSI report. However, according to the conventional format of CSI reports, the highest reported value may be linked to a first CRI that may correspond to any of the CMR sets. As a result, neither the CMR set information nor the TRP information is reflected in the CSI report.

[0052] When the number of reported resource groups or beam groups is relatively large, it may significantly increase the size of the payload of the uplink control information (UCI). Also, since the reported difference value is calculated with reference to the maximum reported value, when two groups of resources are reported, the quantization range within the second group is limited to less than 30 dB, which may affect the accuracy of the report.

[0053] To solve at least a part of the above problems, a solution for channel state information reporting is proposed. According to an embodiment of the present disclosure, a terminal device transmits to a network device a CSI report indicating a correspondence relationship between reported values of resources of a plurality of groups and a plurality of CMR sets set by the network device. Each of the plurality of groups includes resources selected from different channel measurement resource sets. Therefore, the CSI report can provide information regarding a plurality of beam sets from different CMR sets having an appropriate payload size. When receiving the CSI report, the network device may adjust scheduling and setting of transmission with the terminal device.

[0054] FIG. 1A is a diagram showing an exemplary communication system 100 in which an embodiment of the present disclosure can be implemented. A communication system 100, which is a part of a communication network, includes a terminal device 110, a network device 120, and a plurality of TRPs 130-1 and 130-2 that may be collectively referred to as "TRP 130".

[0055] The network device 120 serves the terminal device 110, and the terminal device 110 may communicate with the network device 120 via one or more physical communication channels or links. In the communication network 100, the link from the terminal device 110 to the network device 120 is referred to as an uplink (UL), and the link from the network device 120 to the terminal device 110 is referred to as a downlink (DL). In the UL, the terminal device 110 is a TX device (or transmitter), and the network device 120 is an RX device (or receiver). In the DL, the network device 120 is a transmission (TX) device (or transmitter), and the terminal device 110 is a reception (RX) device (or receiver).

[0056] To support multi-TRP and / or multi-panel, the network device may include one or more TRPs. For example, network device 120 may be coupled to TRPs 130-1 and 130-2 at different geographical locations to achieve better coverage. One or more of the multi-TRPs may be included in the same serving cell or different serving cells. It should be understood that the TRP may be a panel, and the panel may refer to an antenna array (having one or more antenna elements).

[0057] Furthermore, the terminal device 110 may be set by the upper layer parameter repetition. The upper layer parameter repetition is set for each CMR set and indicates whether the resources within the CMR set are transmitted using the same spatial domain transmission filter. Specifically, when the upper layer parameter repetition is set to "ON", the terminal device 110 may assume that the CSI-RS resources within the corresponding CMR set are transmitted using the same DL spatial domain transmission filter, where the CSI-RS resources are transmitted in different OFDM symbols. Otherwise, when the upper layer parameter repetition is set to "OFF", the terminal device 110 may not assume that the CSI-RS resources within the corresponding CMR set are transmitted using the same DL spatial domain transmission filter.

[0058] The network device 120 may set a plurality of CMR sets, each including a plurality of resources and corresponding to each TRP. The terminal device 110 may be set to report N beam pairs corresponding to N groups of resources, and each set includes resources from different CMR sets.

[0059] Figure 1B is a schematic diagram of a CMR set configured for multi-TRP transmission according to some exemplary embodiments of the present disclosure. In the example shown in Figure 1B, the network device 120 configures two CMR sets, namely CMR set 1 and CMR set 2, for two TRPs 130-1 and 130-2. For example, CMR set 1 may be configured for TRP 130-1 and may include resources 101 to 108, and CMR set 2 may be configured for TRP 130-2 and may include resources 111 to 118. The resources 101 to 108 and 111 to 118 may be CSI-RS resources. The terminal device 110 may perform measurements on CMR sets 1 and 2 and report N groups of resources each including two beams, where N = 2.

[0060] It should be understood that each of CMR sets #1 and #2 including the number N = 2 and eight CSI-RS resources is given only as one of the possible configurations. The number N may be any suitable integer greater than or equal to 2. CMR set 1 includes K1 CSI-RS resources, and CMR set 2 includes K2 CSI-RS resources, where K1 ≥ K2.

[0061] Communication in the communication network 100 may comply with any suitable standard including, but not limited to, New Radio access (NR), Long Term Evolution (LTE), LTE-Evolution, LTE-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access (CDMA), and Global System for Mobile Communications (GSM) for mobile communication. Further, the communication may be performed according to any generation of communication protocol known currently or developed in the future. Examples of communication protocols include, but are not limited to, the first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, and fifth generation (5G) communication protocols.

[0062] It should be understood that the number of network devices, terminal devices, and / or TRPs is for illustrative purposes only and does not imply any limitation to the present disclosure. The communication network 100 may include any suitable number of network devices, terminal devices, and / or TRPs suitable for implementing the embodiments of the present disclosure. Also, in some examples, it should be understood that only a homogeneous network arrangement or only a heterogeneous network arrangement may be included in the communication network 100.

[0063] FIG. 2 shows a signaling flow for communication according to some exemplary embodiments of the present disclosure. For illustrative purposes only, process 200 will be described with reference to FIGS. 1A - 1B. Terminal device 110, network device 120, and TRP 130 may be involved in process 200. It should be noted that process 200 is merely an example and not a limitation.

[0064] The terminal device 110 may transmit to the network device 120 the capability information of the terminal device 110 regarding channel measurement (205). For example, the capability information may indicate the CSI - related capability of the terminal device 110 as to whether the terminal device 110 supports CSI reporting at the level of beam pairs or groups of CSI - RS resources.

[0065] Based on the received capability information, the network device 120 may determine measurement settings for the terminal device 110. For example, the measurement settings may be CSI - related settings including, but not limited to, CMR sets, reporting amounts, reporting frequency settings, CSI reporting bands, time limits for channel measurement, etc.

[0066] The network device 120 may transmit to the terminal device 110 the measurement settings for the CMR set (210). For example, the transmission of the measurement settings may be performed via an RRC message. The network device 120 may then transmit CSI - RS based on the measurement settings.

[0067] Upon receiving the measurement configuration, the terminal device 110 may perform channel measurements (e.g., beam measurements) on resources of a plurality of groups, where each group includes resources selected from different channel measurement resource sets. In the context of the present disclosure, the resources within the CMR set may be designated as CRI#m, where for each n = 1,..., N, TIFF0007708222000001.tif861 forms group n, where N represents the number of groups of resources, and M n represents the number of beams within each group, and M0 = 0. For example, {CRI#m, m = 1,..., M1} may form the first group, and {CRI#m, m = M1 + 1,..., M1 + M2} may form the second group. For each n = 1,..., N, it should be understood that group n may be formed as {CRI#m, m = n, N + n..., M n *N + n}. The present disclosure is not limited in this regard.

[0068] The terminal device 110 may obtain measurement results of resources of a plurality of groups. In some exemplary embodiments, the measurement results may include, but are not limited to, RSRP, RSRQ, SINR, etc. The terminal device 110 may determine the values to be reported in the CSI report based on the measurement results (215).

[0069] The terminal device 110 transmits the CSI report to the network device 120 (220). The CSI report indicates the correspondence between the reported values of resources of a plurality of groups and the plurality of channel measurement resource sets configured by the network device 120. In other words, the CSI report provides CMR set information for each of the groups of resources. Examples of the CSI report will be described in detail below.

[0070] In the example shown in FIGS. 1A - 1B, the resources 102, 104, 112, and 114 may be designated as CRI#1, CRI#2, CRI#3, and CRI#4. The first group of resources may include resources 102 and 112, and the second group of resources may include resources 104 and 114.

[0071] The CSI report may include the highest reported value measured for resource CRI#1. As described above, the highest reported value may correspond to a resource within CMR set 1 or a resource within CMR set 2. In some exemplary embodiments, the correspondence may be indicated by a first indicator within the CSI report. The first indicator may indicate the CMR set from which the maximum value among the reported values was obtained. For example, the value of the first indicator may indicate that the highest reported value was measured for CMR set 1 or CMR set 2.

[0072] In an exemplary embodiment where all CRIs are reported by the terminal device 110, if the highest reported RSRP value was measured for a resource from CMR set 1, the first indicator may be set to a first value (e.g., 0), and the bit width of the field for CRI#1 is TIFF0007708222000002.tif727. Otherwise, if the highest reported RSRP value was measured for a resource from CMR set 2, the first indicator may be set to a second value different from the first value (e.g., 1), and the bit width of the field for CRI#1 is TIFF0007708222000003.tif730, and the bit width of the field for CRI#2 is TIFF0007708222000004.tif730. In other words, the first indicator is set to indicate whether the field for CRI#1 refers to a resource within CMR set 1 or a resource within CMR set 2. Table 1 shows an example of a CSI report having a first indicator. Table 1. CSI Report with the First Indicator JPEG0007708222000005.jpg67168

[0073] In some exemplary embodiments, none of the CRIs are reported, or only a subset of the CRIs are reported. For example, in Release 15 / 16, when CRI-RSRP or CRI-SINR is set to be reported and the upper layer parameter repetition is set to "ON", the terminal device 110 may not report the CRI. In these embodiments, if the highest reported RSRP value is measured for the resources from CMR set 1, the first indicator may be set to a first value (e.g., 0). Otherwise, if the highest reported RSRP value is measured for the resources from CMR set 2, the first indicator may be set to a second value (e.g., 1) different from the first value. Table 2 shows another example of the CSI report with the first indicator. Table 2. CSI Report with the First Indicator JPEG0007708222000006.jpg123168

[0074] It should be understood that the specific values of the first value and the second value of the first indicator in the above-described embodiments are given as examples, and any other values are also possible. Further, the number of bits for the first indicator may vary according to the bit width and the number of CMR sets set by the network device 120. For example, the number of bits for the first indicator may be specified as TIFF0007708222000007.tif456. The present disclosure is not limited in this regard.

[0075] In some exemplary embodiments, the fields for the CRIs and the reported values within the CSI report are fixed. For example, the field CRI#1 is Corresponding to resource 102 within CMR set 1 having a bit width of TIFF0007708222000008.tif727, field CRI#2 is Corresponding to resource 112 within CMR set 2 having a bit width of TIFF0007708222000009.tif728, and so on. Additionally, for example, field RSRP#1 may correspond to a reported value determined based on a measurement result obtained on the resource corresponding to CRI#1.

[0076] In the above-described embodiment, the correspondence relationship may be indicated by a second indicator within the CSI report. The second indicator may indicate a target field for the maximum value among the reported values. When all CRIs are reported by the terminal device 110, the second indicator may indicate whether the resource corresponding to CRI#1 has the highest reported value. The first value (e.g., 0) of the second indicator is such that field RSRP#1 is first mapped to a 7-bit bit width, corresponding to CRI#1 and indicating the highest RSRP. Field differential RSRP#2 follows with a 4-bit bit width. The second value (e.g., 1) of the second indicator is such that field differential RSRP#1 is first mapped to a 4-bit bit width, followed by a 7-bit bit width corresponding to CRI#2 and indicating the highest RSRP after field RSRP#2. In other words, the second indicator may be set to indicate the mapping position of the field for the highest RSRP. Table 3 shows an example of a CSI report having a second indicator. Table 3. CSI Report with Second Indicator JPEG0007708222000010.jpg70165

[0077] In some exemplary embodiments, none of the CRIs are reported, or only a subset of the CRIs are reported. Similarly, a first value (e.g., 0) of the second indicator may indicate that field RSRP#1 is first mapped to a 7-bit bitwidth, followed by a 4-bit bitwidth after field differential RSRP#2. A second value (e.g., 1) of the second indicator may indicate that field differential RSRP#1 is first mapped to a 4-bit bitwidth, followed by a 7-bit bitwidth after field RSRP#2.

[0078] In some exemplary embodiments, the CRI within the CSI report and the fields for the reported values are fixed, and the CSI report, for showing the correspondence, · an absolute value reported for the measurement result of the resources of the first group among a plurality of groups, each absolute value being reported within a corresponding 7-bit field, and · a reported difference between the larger of the reported values and the measurement results of the remaining resources of the plurality of groups, each difference being reported within a corresponding 4-bit field, may be included.

[0079] Table 4 shows an example of a CSI report having an extended field for the reported values as shown below. As illustrated, field CRI#1 corresponds to resource 102 in CMR set 1 having a bitwidth of TIFF0007708222000011.tif727, and field CRI#2 corresponds to resource 102 in CMR set 1 having a bitwidth of TIFF0007708222000011.tif727, and field CRI#2 It corresponds to the resource 112 within the CMR set 2 having a bit width of TIFF0007708222000012.tif728, and the same applies hereinafter. The field RSRP#1 may correspond to a 7-bit reported value determined based on the measurement results obtained on the resource 102 corresponding to CRI#1, and the field RSRP#2 may correspond to a 7-bit reported value determined based on the measurement results obtained on the resource 112 corresponding to CRI#2. Additionally, the 4-bit field differential RSRP#3 may correspond to the reported difference between the measurement results obtained on the resource 104 with respect to the larger of the fields RSRP#1 and RSRP#2, and the 4-bit field differential RSRP#4 may correspond to the reported difference between the measurement results obtained on the resource 114 with respect to the larger of the fields RSRP#1 and RSRP#2. Table 4. CSI Report with Extended Fields for Reported Values JPEG0007708222000013.jpg71130

[0080] In some exemplary embodiments, the CSI report may indicate the correspondence between a plurality of groups of resources and the reported values determined based on the average measurement results of the plurality of groups of resources. For example, in the CSI report, the combination of resources may be indexed by the ranking of the resource groups. Additionally or alternatively, the CSI report may be adapted not to report the RSRP or to report two RSRPs for each combination. Such a CSI report can reduce the payload size and may be particularly beneficial when the network device 120 is interested in the optimal beam pair rather than paying attention to which TRP has the optimal beam.

[0081] Table 5 shows an example of a CSI report that includes a combination index and reported values for a resource group as follows. The combination index can be used to index the resources within CMR set 1 and CMR set 2 in a one-to-one combination. The ranking of the combinations for the resources may be, for example, {(resource 101, resource 111), (resource 102, resource 112), …, (resource 108, resource 118)}, where combination index 0 may represent the combination of (resource 101, resource 111), and so on. As shown, field Group#1 may correspond to the first group of resources 102 and 112, and field Group#2 may correspond to the second group of resources 104 and 114. Also, field average RSRP#1 may indicate the average RSRP of the first group corresponding to field Group#1, and field average differential RSRP#2 may indicate the average differential RSRP between the average RSRP for the second group and the average RSRP for the first group. Table 5. CSI Report with Group Index and Reported Values for Resource Group JPEG0007708222000014.jpg34162

[0082] In the above-described embodiments, when the upper layer parameter repetition is set to "ON" for both CMR sets 1 and 2, the group index is not reported. When the upper layer parameter repetition is set to "ON" for CMR set 1, the group index may be composed only of the CRI within CMR set 2.

[0083] In some exemplary embodiments, the CSI report may include a first part and, optionally, a second part. The terminal device 110 may use a third indicator to indicate whether the second part of the CSI report exists. Such a two - part format of the CSI report may be advantageous when a large number of TRPs or beams are used for communication between the terminal device 110 and the network device 120.

[0084] For example, when the number of resource groups exceeds a predetermined threshold (e.g., 1, 2, etc.), the terminal device 110 may use the two - part format of the CSI report, and the first part of the CSI report may include a third indicator for indicating the existence of the second part of the CSI report. In another example, when two or fewer groups of resources are discovered, the terminal device 110 may transmit the first part of the CSI report that notifies the network device 120 that there is no second part to be reported.

[0085] In some exemplary embodiments, the terminal device 110 may determine whether to omit the second part of the CSI report according to a priority rule. For example, the priority rule may define that resource group n has a lower priority than resource group n - 1, or alternatively, that beam pairs #3 and #4 have a lower priority than beam pairs #1 and #2.

[0086] When the first part of the CSI report includes a part of the reported value and the third indicator, the terminal device 110 may transmit the second part of the CSI to the network device 120 to report the remaining reported values. Table 6 shows an example of the two - part format of the CSI report. Table 6. Two - part format of the CSI report JPEG0007708222000015.jpg126165

[0087] As shown in Table 6, the first part of the CSI report may be set to report the first half of the resource group to be reported, and the second part of the CSI report may be set to report the second half of the resource group to be reported. Alternatively, the first part of the CSI report may be set to report the first half of the resources within each CMR set, and the second part of the CSI report may be set to report the second half of the resources within each CMR set.

[0088] In some exemplary embodiments, the CSI report may have an extended quantization range for the values to be reported. For example, the CSI report may, to indicate the correspondence, · the first reported value for the maximum measurement result among the measurement results of each group of resources, and · the reported difference between the maximum measurement result and the remaining measurement results of each group of the resources.

[0089] In such a CSI report, the reported differential RSRP may be calculated with respect to the maximum RSRP within each group of resources. Table 7 shows an example of a CSI report having an extended quantization range. As shown in Table 7, the field RSRP#1 indicates the highest reported RSRP. Instead of reporting all the differential RSRPs calculated with respect to the highest reported RSRP, the field differential RSRP#4 indicates the differential RSRP calculated with respect to the highest RSRP#3 within the same resource group. Table 7. CSI Report with Extended Quantization Range JPEG0007708222000016.jpg67130

[0090] Table 8 shows another example of a CSI report having an extended quantization range. As illustrated, the CSI report may indicate the maximum reported value of each resource group within the fields RSRP#1 and RSRP#3. For example, each of the fields RSRP#1 and RSRP#3 may include 7 bits. Table 8. CSI Report with Extended Quantization Range JPEG0007708222000017.jpg65129

[0091] As described above, conventional CSI reports have a quantization range for a single group of resources. For example, Table 9 shows a CSI report having a conventional quantization range of 30 dB with a step size of 2 dB. Table 9. CSI Report with Conventional Quantization Range JPEG0007708222000018.jpg52113

[0092] In the case of CSI reports for multiple groups of resources, the same beam may be selected within two or more beam pairs. In this case, there may be two or more fields for the same resources corresponding to the beam. In some exemplary embodiments, at least one of the resources corresponds to two or more of the groups. As a result, the resolution and / or range of the reported values may be improved using the corresponding fields.

[0093] In these embodiments, the corresponding relationship may be indicated by a plurality of fields in the CSI report, and the plurality of fields may indicate at least one reported value of the measurement result of the at least one of the resources. An example of such a CSI report is shown in Table 10. As shown in Table 10, both fields CRI#1 and CRI#3 correspond to the same resource, where the reported value for the measurement result of the resource indicated within field CRI#1 is the absolute value of the RSRP. In this example, there are a total of (7 + 4) bits. Compared with the conventional CSI report, an additional 4 bits may be used to represent a much larger number of states, which may be used for improving the resolution and / or extending the quantization range. Table 10. CSI Report with Two or More Fields for the Same Resource JPEG0007708222000019.jpg61128

[0094] As a more general example, it may be quantized by (3 + k * 4) bits, where k is the number of reported CRIs corresponding to the same resource. In some other exemplary embodiments, not all CRIs are reported, and k may be considered equal to the number of set reported beam pairs, i.e., k = N.

[0095] Table 11 shows another example of CSI reporting having two or more fields for the same resource. As shown in Table 11, both fields CRI#2 and CRI#4 correspond to the same resource, where the reported value for the measurement result of the resource indicated within field CRI#2 is the difference value of RSRP. In this example, there are a total of (4 + 4) bits. Compared with the conventional CSI reporting, an additional 4 bits may be used to represent a much larger number of states, which may be used for improving the resolution and / or expanding the quantization range. Table 11. CSI reporting having two or more fields for the same resource JPEG0007708222000020.jpg64128

[0096] Table 12 shows CSI reporting having an improved resolution with a step size of 1 dB. Table 12. CSI reporting having an improved resolution JPEG0007708222000021.jpg66111

[0097] Table 13 shows CSI reporting having an extended quantization range of 60 dB. Table 13. CSI reporting having an extended quantization range JPEG0007708222000022.jpg65110

[0098] It should be understood that the numbers and values shown in Tables 1 to 13 above are illustrative rather than limiting. Additionally, as an example of values reported for CMR sets, RSRP is mentioned. The reported value may be an absolute value or a difference value determined based on the reference signal received quality (RSRQ) or signal-to-interference-plus-noise ratio (SINR) measured from the reference signal.

[0099] When receiving the CSI report, the network device 120 can know the CMR set information regarding the beam pair / resource group. Therefore, the network device 120 may adjust the scheduling and configuration of transmissions with the terminal device 110 (225).

[0100] In this way, uplink control information may be used to report multiple beam pairs and an optimal beam pair suitable for multi-TRP. Further, the UCI may indicate the correspondence between the resource group and the channel measurement resource set with a reduced payload size. Therefore, the accuracy of the report can be improved.

[0101] FIG. 3 shows a flowchart of an exemplary communication method 300 implemented in a terminal device according to some embodiments of the present disclosure. The method 300 can be implemented in the terminal device 110 as shown in FIG. 1A. The method 300 may include additional blocks not shown and / or some of the blocks shown may be omitted, and it should be understood that the scope of the present disclosure is not limited in this regard.

[0102] Before channel measurement, the terminal device 110 may transmit to the network device 120 the capability information of the terminal device 110 regarding channel measurement. For example, the capability information may indicate whether the terminal device 110 supports CSI reporting at the level of a beam pair or a group of CSI-RS resources.

[0103] The network device 120 may determine measurement settings for the terminal device 110 based on the received capability information. For example, the measurement settings may be CSI-related settings including, but not limited to, CMR sets, reporting amounts, reporting frequency settings, CSI reporting bands, time limits for channel measurements, etc.

[0104] The network device 120 may send measurement settings for the CMR set to the terminal device 110. For example, the transmission of the measurement settings may be performed via an RRC message. The network device 120 may then send CSI-RS based on the measurement settings.

[0105] The terminal device 110 may measure CSI-RS based on the measurement settings and obtain measurement results for multiple groups of resources. The reported value may be determined based on the measurement results.

[0106] In block 310, the terminal device 110 sends a CSI report to the network device 120 indicating the correspondence between the reported values for multiple groups of resources and the multiple channel measurement resource sets set by the network device 120. Each of the multiple groups may include resources selected from different channel measurement resource sets.

[0107] In some exemplary embodiments, the correspondence may be indicated by a first indicator in the CSI report. The first indicator may indicate the channel measurement resource set from which the maximum value among the reported values was obtained.

[0108] In some exemplary embodiments, the correspondence may be indicated by a second indicator in the CSI report. The second indicator may indicate the target field for the maximum value among the reported values.

[0109] In some exemplary embodiments, the CSI report includes a reported value for a measurement result of a resource of a first group among a plurality of groups, the larger of the reported values, and a reported difference between the larger of the reported values and the remaining measurement results of the resources among the plurality of groups, to indicate a correspondence relationship.

[0110] In some exemplary embodiments, the CSI report may indicate a correspondence relationship between a resource of a plurality of groups and a reported value determined based on an average measurement result of the resources of the plurality of groups.

[0111] In some exemplary embodiments, the CSI report may include a first part and, optionally, a second part. In these embodiments, the terminal device 110 may transmit a first part of the CSI report that includes a third indicator indicating the presence of the second part of the CSI report. The first part of the CSI report may indicate a part of the reported value. The terminal device 110 may then transmit a second part of the CSI report indicating the remaining reported values.

[0112] In some exemplary embodiments, the CSI report includes, to indicate a correspondence relationship, a first reported value for the maximum measurement result among the measurement results of each group of resources, the maximum measurement result, and a reported difference between the maximum measurement result and the remaining measurement results of each group of the resources.

[0113] In some exemplary embodiments, at least one resource among the resources may correspond to two or more groups among the groups, and this correspondence relationship is indicated by a plurality of fields in the CSI report. The plurality of fields may indicate at least one reported value of the measurement result of the at least one resource among the resources.

[0114] In some embodiments, the reported value may include at least one of an absolute value or a difference value determined based on a reference signal received power (RSRP) measured from a reference signal, a reference signal received quality (RSRQ), or a signal-to-interference-plus-noise ratio (SINR).

[0115] According to an exemplary embodiment of the present disclosure, a solution for beam reporting is provided. The CSI report is improved to report a plurality of beam pairs and an optimal beam pair suitable for multi-TRP. Further, the CSI report may indicate a correspondence between a resource group and a channel measurement resource set having a reduced payload size. Therefore, the accuracy of the report can be improved.

[0116] FIG. 4 shows a flowchart of an exemplary communication method 400 implemented in a network device according to some embodiments of the present disclosure. The method 400 can be implemented in the network device 120 as shown in FIG. 1A. It should be understood that the method 400 may include additional blocks not shown and / or some of the blocks shown may be omitted, and the scope of the present disclosure is not limited in this regard.

[0117] The terminal device 110 may transmit to the network device 120 the capability information of the terminal device 110 regarding channel measurement. For example, the capability information may indicate whether the terminal device 110 supports CSI reporting at the level of a beam pair or a group of CSI-RS resources.

[0118] Upon receiving the capability information, the network device 120 may determine a measurement setting for the terminal device 110 based on the received capability information. For example, the measurement setting may be CSI-related settings including, but not limited to, a CMR set, a reporting amount, a reporting frequency setting, a CSI reporting band, a time limit for channel measurement, and the like.

[0119] The network device 120 may transmit measurement settings for the CMR set to the terminal device 110. For example, the transmission of the measurement settings may be performed via an RRC message. The network device 120 may then transmit CSI-RS based on the measurement settings.

[0120] In block 410, the network device 120 receives from the terminal device 110 a CSI report indicating a correspondence between the reported values of a plurality of groups of resources and a plurality of channel measurement resource sets configured by the network device 120. Each of the plurality of groups may include resources selected from different channel measurement resource sets.

[0121] In some exemplary embodiments, the correspondence may be indicated by a first indicator in the CSI report. The first indicator may indicate the channel measurement resource set in which the maximum value among the reported values was obtained.

[0122] In some exemplary embodiments, the correspondence may be indicated by a second indicator in the CSI report. The second indicator may indicate a target field for the maximum value among the reported values.

[0123] In some exemplary embodiments, the CSI report may include, for indicating the correspondence, the reported value for the measurement result of the resources of the first group among the plurality of groups, the larger of the reported values, and the reported difference between the measurement results of the remaining resources among the plurality of groups.

[0124] In some exemplary embodiments, the CSI report may indicate a correspondence between the resources of the plurality of groups and the reported value determined based on the average measurement result of the resources of the plurality of groups.

[0125] In some exemplary embodiments, the CSI report may include a first part and optionally a second part. In these embodiments, the network device 120 may receive a first part of the CSI report that includes a third indicator indicating the presence of the second part of the CSI report. The first part of the CSI report may indicate a part of the reported values. The network device 120 may then receive a second part of the CSI report indicating the remaining reported values.

[0126] In some exemplary embodiments, for indicating a correspondence relationship, the CSI report includes a first reported value for the maximum measurement result among the measurement results of each group of resources, the maximum measurement result, and a reported difference between the maximum measurement result and the remaining measurement results of each group of the resources.

[0127] In some exemplary embodiments, at least one of the resources may correspond to two or more of the groups, the correspondence relationship is indicated within the CSI report, and the plurality of fields indicate at least one reported value of the measurement results of the at least one of the resources.

[0128] In some embodiments, the reported values may include at least one of an absolute value or a differential value determined based on a reference signal received power (RSRP) measured from a reference signal, a reference signal received quality (RSRQ), or a signal-to-interference-plus-noise ratio (SINR).

[0129] According to an exemplary embodiment of the present disclosure, a solution for beam reporting is provided. The CSI report is improved to report a plurality of beam pairs and an optimal beam pair suitable for multi-TRP. Further, the CSI report may indicate a correspondence relationship between a resource group and a channel measurement resource set having a reduced payload size. Therefore, the accuracy of the report can be improved.

[0130] FIG. 5 is a schematic block diagram of an apparatus 500 suitable for implementing an embodiment of the present disclosure. The apparatus 500 may be considered as another exemplary embodiment of the terminal device 110 or the network device 120 shown in FIG. 1A. Accordingly, the apparatus 500 can be implemented in the terminal device 110 or the network device 120, or as at least a part thereof.

[0131] As shown, the apparatus 500 includes a processor 510, a memory 520 coupled to the processor 510, a suitable transmitter (TX) and receiver (RX) 540 coupled to the processor 510, and a communication interface coupled to the TX / RX 540. The memory 520 stores at least a part of a program 530. The TX / RX 540 is used for bidirectional communication. The TX / RX 540 has at least one antenna to facilitate communication, although the access node referred to herein may actually have multiple antennas. The communication interface may represent any interface necessary for communication with other network elements, such as an X2 interface for bidirectional communication between eNBs, an S1 interface for communication between a mobility management entity (MME) / serving gateway (S-GW) and an eNB, a Un interface for communication between an eNB and a relay node (RN), or a Uu interface for communication between an eNB and a terminal device.

[0132] The program 530 is assumed to include program instructions that enable the apparatus 500 to operate in accordance with the embodiments of the present disclosure when executed by the associated processor 510 as described herein with reference to FIGS. 2-4. The embodiments of the present text may be implemented by computer software executable by the processor 510 of the apparatus 500, or by hardware, or by a combination of software and hardware. The processor 510 may be configured to implement various embodiments of the present disclosure. Further, the combination of the processor 510 and the memory 520 may form processing means suitable for implementing various embodiments of the present disclosure.

[0133] Memory 520 may be of any type suitable for a local technology network and, by way of non-limiting example, may be implemented using any suitable data storage technology such as a non-transitory computer-readable storage medium, a semiconductor-based memory device, a magnetic memory device and system, an optical memory device and system, a fixed memory, and a removable memory. Although only one memory 520 is shown within apparatus 500, there may be several physically different memory modules within apparatus 500. Processor 510 may be of any type suitable for a local technology network and, by way of non-limiting example, may include one or more of a general-purpose computer, a dedicated computer, a microprocessor, a digital signal processor (DSP), and a processor based on a multi-core processor architecture. Apparatus 500 may have an application-specific integrated circuit chip that is temporally dependent on a clock that synchronizes a plurality of processors, e.g., a main processor.

[0134] Overall, the various embodiments of the present disclosure may be implemented in hardware or dedicated circuitry, software, logic, or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software executable by a controller, a microprocessor, or other computing device. Although the various aspects of the embodiments of the present disclosure are illustrated and described using block diagrams, flowcharts, or some other pictorial representation, it should be understood that the blocks, devices, systems, techniques, or methods described herein may be implemented, by way of non-limiting example, in hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or a controller or other computing device, or any combination thereof.

[0135] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as instructions included in program modules, that are executed within an apparatus on a target physical processor or virtual processor to perform the processes or methods described above with reference to FIGS. 2 to 10. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, etc. that perform specific tasks or implement specific abstract data types. In various embodiments, the functions of the program modules may be combined or divided among the program modules as needed. The machine-executable instructions of the program modules may be executed within a local or distributed device. In a distributed device, the program modules may be located in both local and remote storage media.

[0136] The program code for executing the method of the present disclosure may be described in any combination of one or more programming languages. These program codes are provided to a processor or controller of a general-purpose computer, a dedicated computer, or other programmable data processing equipment, and when executed by the processor or controller, the program codes implement the functions / operations specified in the flowchart and / or block diagram. The program code may be executed entirely on the machine, partially on the machine, as an independent software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0137] The above program code may be implemented on a machine-readable medium, which may be any tangible medium that can be utilized by or associated with an instruction execution system, apparatus, or device and that can contain or store a program for them. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing media. More specific examples of the machine-readable storage medium may include electrical connections having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0138] It should be understood that although the operations have been described in a particular order for purposes of illustration, these operations are not necessarily required to be performed in the particular order shown or in sequential order, nor are all of the operations shown necessarily required to be performed. In some cases, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Some features described in the context of individual embodiments may be combined and implemented in a single embodiment. Conversely, various features described in the context of a single embodiment may be implemented separately in multiple embodiments or in any suitable sub-combination.

[0139] Although the present disclosure has been described in language specific to structural features and / or methodological acts, it is to be understood that the disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as illustrative forms of carrying out the claims.

Claims

[

1. ] A terminal device, comprising: means for transmitting capability information related to channel measurement to a network device; means for receiving, from the network device, information for setting a first channel measurement resource set and a second channel measurement resource set; means for transmitting, to the network device, a channel state information (CSI) report including a field of an indicator having a value of 0 or 1 and a field of a first resource indicator based on the capability information; wherein the indicator indicates one of the first channel measurement resource set and the second channel measurement resource set in which the first resource indicator is reported; the first resource indicator is one of a plurality of resource indicators of a first resource group; the first resource group is one of a plurality of resource groups; one of the first channel measurement resource set and the second channel measurement resource set in which the first resource indicator is reported is different from one of the first channel measurement resource set and the second channel measurement resource set in which another one of the plurality of resource indicators of the first resource group is reported; [

2. ] Each of the plurality of resource groups includes a resource indicator starting from an index value m; Among the remaining resource groups other than the first resource group, according to the same mapping order as the first resource group, the resource indicator having the index value m of each of the remaining resource groups is reported from one of the first channel measurement resource set and the second channel measurement resource set in which the first resource indicator is reported; The terminal device according to claim 1. [

3. ] The first resource indicator corresponds to a maximum measured value of reference signal received power (RSRP); The terminal device according to claim 1. [

4. ] The maximum measured value of RSRP is quantized to a 7-bit value; The terminal device according to claim 3. [

5. ] A terminal device, comprising: means for receiving capability information related to channel measurement from a network device; means for transmitting to the terminal device information for setting a first channel measurement resource set and a second channel measurement resource set; means for receiving, based on the capability information, from the terminal device, a channel state information (CSI) report including a field of an indicator having a value of 0 or 1 and a field of a first resource indicator; comprising; the indicator indicates one of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported; the first resource indicator is one of a plurality of resource indicators of a first resource group; the first resource group is one of a plurality of resource groups; one of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported is different from one of the first channel measurement resource set or the second channel measurement resource set in which another one of the plurality of resource indicators of the first resource group is reported; network device.

6. each of the plurality of resource groups includes a resource indicator starting from an index value m; the remaining resource groups other than the first resource group follow the same mapping order as the first resource group, and the resource indicator having the index value m of each of the remaining resource groups is reported from one of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported; The network device according to claim 5.

7. the first resource indicator corresponds to a maximum measured value of reference signal received power (RSRP); The network device according to claim 5.

8. the maximum measured value of RSRP is quantized to a 7-bit value; The network device according to claim 7.

9. A communication method executed by a terminal device, comprising: transmitting capability information regarding channel measurement to a network device; Receiving, from the network device, information for setting a first channel measurement resource set and a second channel measurement resource set; Based on the capability information, transmitting, to the network device, a channel state information (CSI) report including a field of an indicator having a value of 0 or 1 and a field of a first resource indicator; including; The indicator indicates one of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported; The first resource indicator is one of a plurality of resource indicators of a first resource group; The first resource group is one of a plurality of resource groups; One of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported is different from one of the first channel measurement resource set or the second channel measurement resource set in which another one of the plurality of resource indicators of the first resource group is reported; A communication method.

10. Each of the plurality of resource groups includes a resource indicator starting from an index value m; For the remaining resource groups other than the first resource group, following the same mapping order as the first resource group, the resource indicator having the index value m of each of the remaining resource groups is reported from one of the first channel measurement resource set or the second channel measurement resource set in which the first resource indicator is reported; The method according to claim 9.

11. The first resource indicator corresponds to the maximum measured value of the reference signal received power (RSRP); The method according to claim 9.

12. The maximum measured value of the RSRP is quantized to a 7-bit value; The method according to claim 11.

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