Configuration and quantization of channel state information reference signal resources in time-domain channel property reporting

Abstract

A system, method, and apparatus for wireless communication are described. The wireless communication method includes receiving, by a wireless device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, where each CSI resource configuration of the one or more CSI resource configurations includes one CSI reference signal (CSI-RS) resource set, where the one CSI-RS resource set includes one or more CSI-RS resources. The method further includes receiving, by the wireless device, a CSI trigger state list, and determining, by the wireless device, time domain channel properties (TDCP) based on the CSI reporting configuration and the CSI trigger state list. The method further includes transmitting, by the wireless device, a TDCP report. The described techniques may be employed by a network device or by the wireless device.

Description

[Technical Field]

[0001] This patent document is generally directed to digital wireless communications. [Background technology]

[0002] Mobile telecommunications technologies are moving the world toward an increasingly connected and networked society. Compared to existing wireless networks, next-generation systems and wireless communication techniques will need to support a much broader range of use case characteristics and provide a more complex and sophisticated range of access requirements and flexibility.

[0003] Long Term Evolution (LTE) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP®). LTE Advanced (LTE-A) is a wireless communication standard that extends the LTE standard. The fifth generation wireless system, known as 5G, evolves the LTE and LTE-A wireless standards and promises to support higher data rates, multiple connections, ultra-low latency, high reliability, and other emerging business needs. Summary of the Invention [Means for solving the problem]

[0004] Techniques for configuring channel state information (CSI) reference signal (CSI-RS) resources and quantizing amplitude and phase in time domain channel property (TDCP) reports are disclosed.

[0005] A first exemplary wireless communication method includes receiving, by a wireless device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, where each CSI resource configuration of the one or more CSI resource configurations includes one CSI reference signal (CSI-RS) resource set, where the one CSI-RS resource set includes one or more CSI-RS resources. The method further includes receiving, by the wireless device, a CSI trigger state list, and determining, by the wireless device, time domain channel properties (TDCP) based on the CSI reporting configuration and the CSI trigger state list. The method further includes transmitting, by the wireless device, the TDCP report.

[0006] A second exemplary wireless communication method includes receiving, by a wireless device, an upper layer parameter indicating a quantization bit width and determining, by the wireless device, an amplitude of a channel correlation. The method further includes determining, by the wireless device, an amplitude indicator indicating a quantization amplitude based on the amplitude of the channel correlation and the quantization bit width. The method further includes transmitting, by the wireless device, the amplitude indicator.

[0007] A third exemplary wireless communication method includes receiving, by a wireless device, higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter. The method further includes determining, by the wireless device, a phase of a channel correlation. The method further includes determining, by the wireless device, at least one of a phase indicator and a phase quantization mode parameter indicating a quantization phase of the channel correlation based on the phase of the channel correlation and the higher layer signaling. The method further includes transmitting, by the wireless device, at least one of the phase indicator and the phase quantization mode parameter.

[0008] A fourth exemplary wireless communication method includes receiving, by a wireless device, higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. The method further includes determining, by the wireless device, a phase of a channel correlation. The method further includes determining, by the wireless device, a phase indicator indicative of a quantization phase of the channel correlation based on the phase of the channel correlation and the higher layer signaling. The method further includes transmitting, by the wireless device, the phase indicator.

[0009] A fifth example wireless communication method includes transmitting, by a network device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, where each CSI resource configuration of the one or more CSI resource configurations includes one CSI reference signal (CSI-RS) resource set, where the one CSI-RS resource set includes one or more CSI-RS resources. The method further includes transmitting, by the network device, a CSI trigger state list. The method further includes receiving, by the network device, a time domain channel property (TDCP) report based on the CSI reporting configuration and the CSI trigger state list.

[0010] A sixth exemplary wireless communication method includes transmitting, by a network device, higher layer parameters indicating a quantization bit width and transmitting, by the network device, an amplitude of a channel correlation. The method further includes receiving, by the network device, an amplitude indicator indicating the quantization amplitude, the amplitude indicator being based on the amplitude of the channel correlation and the quantization bit width.

[0011] A seventh exemplary wireless communication method includes transmitting, by a network device, higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter. The method further includes transmitting, by the network device, a phase of a channel correlation. The method further includes receiving, by the network device, at least one of a phase indicator and a phase quantization mode parameter indicating a quantized phase of the channel correlation, where the phase indicator is based on the phase of the channel correlation and the higher layer signaling.

[0012] An eighth exemplary wireless communication method includes transmitting, by a network device, higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. The method further includes transmitting, by the network device, a phase of a channel correlation. The method further includes receiving, by the network device, a phase indicator indicative of a quantized phase of the channel correlation, the phase indicator being based on the phase of the channel correlation and the higher layer signaling.

[0013] In yet another exemplary embodiment, a device configured or operable to perform the method described above is disclosed. The device may include a processor configured to implement the method described above.

[0014] In yet another exemplary embodiment, the methods described above are embodied in the form of processor-executable code and stored in a non-transitory computer-readable storage medium, the code contained in the computer-readable storage medium, when executed by a processor, causing the processor to implement the methods described in this patent document.

[0015] These and other aspects and their implementations are described in more detail in the drawings, description, and claims. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 illustrates an exemplary remote radio head (RRH) arrangement.

[0017] [Figure 2] FIG. 2 illustrates an example framework for channel state information (CSI) reference signal (CSI-RS) resource configuration.

[0018] [Figure 3] FIG. 3 is an example flowchart for transmitting a time domain channel property (TDCP) report.

[0019] [Figure 4] FIG. 4 is an exemplary flowchart for transmitting an amplitude indicator.

[0020] [Figure 5] FIG. 5 is an exemplary flowchart for transmitting a phase indicator.

[0021] [Figure 6] FIG. 6 is another exemplary flowchart for transmitting a phase indicator.

[0022] [Figure 7] FIG. 7 is an exemplary flowchart for receiving a TDCP report.

[0023] [Figure 8] FIG. 8 is an exemplary flowchart for receiving an amplitude indicator.

[0024] [Figure 9] FIG. 9 is an exemplary flowchart for receiving a phase indicator.

[0025] [Figure 10] FIG. 10 is another exemplary flow chart for receiving a phase indicator.

[0026] [Figure 11] FIG. 11 illustrates an example block diagram of a hardware platform that may be part of a network device or a communication device.

[0027] [Figure 12] FIG. 12 illustrates an exemplary wireless communication including a base station (BS) and user equipment (UE) according to some implementations of the disclosed technology. DETAILED DESCRIPTION OF THE INVENTION

[0028] Detailed Description The example headings for the various sections below are used to facilitate understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Thus, one or more features of one example section can be combined with one or more features of another example section. Furthermore, although 5G terminology is used for clarity of explanation, the techniques disclosed herein are not limited to only 5G technology and may also be used in wireless systems implementing other protocols.

[0029] I. Introduction

[0030] In many cases, a base station (BS) is expected to provide data transmission services for multiple user equipments (UEs) with different movement speeds. The different movement speeds will lead to different channel change rates between the BS and the UEs. To improve the service provision quality, the BS needs to obtain time domain channel properties (TDCP), which is a type of channel state information (CSI) that represents the channel change rate and thus configures corresponding service provision policies for different UEs. Generally, the TDCP is measured by the UE through a tracking reference signal (TRS) and then reported to the BS. However, the CSI-RS resource configuration and quantization scheme in the TDCP report are not specified.

[0031] In this patent document, the following embodiments are provided to address the issue of TDCP reporting configuration.

[0032] CSI-RS resource associated with the TDCP report

[0033] Quantization Scheme

[0034] Details of the embodiment are presented below.

[0035] TDCP is a type of CSI that represents the rate of change of the channel between the UE and the BS. TDCP is typically applied in two scenarios: a high-speed railway scenario and a highway scenario. The high-speed railway scenario is illustrated in Figure 1, where there are six remote radio heads (RRHs). To save handover procedures, some of the RRHs correspond to the same cell. This means that there are long, narrow cells along the railway. Similarly, there are several transmission / reception points (TRPs) deployed along the highway.

[0036] Generally, a TDCP report includes one or more amplitudes and / or phases of the channel correlation. The channel correlation c(τ) is measured through a special type of CSI-RS named TRS, in which two or four CSI-RS resources are configured in two consecutive slots. Detailed specifications of the TRS can be found in [Supplementary Note 5.1.6.1.1 TS38.214].

[0037] Although current specifications [TS 38.212 38.214] specify the reporting structure of CSI in detail, these specifications are probably not suitable for TDCP, as TDCP differs significantly from other CSI in terms of reporting quantities and measurement mechanisms.

[0038] In this patent document, three embodiments are provided to address the TDCP reporting configuration issue, including aspects of the CSI-RS resources associated with TDCP reporting, the CSI-RS emissions used to calculate TDCP, and a quantization scheme for the amount of reporting.

[0039] First, a description of some terminology to be used within the patent document is provided.

[0040] It should be noted that in this patent document, "UE" is equivalent to a wireless communication device.

[0041] It should be noted that in this patent document, "BS" is equivalent to a wireless network device, next generation Node B (gNB), or TRP.

[0042] It should be noted that in this patent document, "TRS" is equivalent to RS, CSI-RS, tracking CSI-RS, CSI-RS for tracking.

[0043] It should be noted that in this patent document, a "CSI-RS resource" is equivalent to a non-zero power (NZP) CSI-RS resource, and a "CSI-RS resource set" is equivalent to an NZP CSI-RS resource set.

[0044] It should be noted that in this patent document, "TDCP" is equivalent to CSI, and "TDCP report" is equivalent to CSI report.

[0045] It should be noted that in this patent document, "higher layer signaling" or "higher layer parameter" is equivalent to Radio Resource Control (RRC), RRC parameter, Radio Resource Management (RRM), Radio Resource Arrangement (RRA), Downlink Control Information (DCI), or Physical Downlink Control Channel (PDCCH).

[0046] It should be noted that in this patent document, a "time unit" can be a sub-symbol, a symbol, a slot, a sub-frame, a frame, or a transmission opportunity.

[0047] It should be noted that in this patent document, "channel correlation" is equivalent to channel autocorrelation and channel correlation coefficient.

[0048] II. Embodiment 1: Overview

[0049] The TDCP measurement and reporting procedure generally includes the following steps:

[0050] The UE receives higher layer signaling.

[0051] The UE receives a DCI, which triggers a TDCP report.

[0052] The UE measures the TDCP through the TRS transmitted from the BS.

[0053] The TDCP report includes the following quantities:

[0054] Y ≥ 1 Amplitude of channel correlation

[0055] Y ≥ 1 Phase of the channel correlation when the higher layer parameter "PhaseReport" is configured as "on"

[0056] The channel correlation c(τ) is measured through the TRS by the following equation:

[0057] [ka]

[0058] where τ represents a time delay or lag, and h n(t) denotes the channel response for subcarrier n at time t, and (·) * denotes the conjugate operation. Note that the amplitude of the channel correlation is normalized in the formula.

[0059] The UE reports the TDCP to the BS through the physical uplink shared channel (PUSCH) indicated by the DCI.

[0060] III. Embodiment 2: CSI-RS Resources Associated with TDCP Reports

[0061] A general CSI-RS resource configuration framework is illustrated in FIG. 2. One CSI reporting configuration is associated with one or more periodic and / or aperiodic CSI resource configurations. Each CSI resource configuration includes one or more CSI-RS resource sets, and each CSI-RS resource set includes one or more CSI-RS resources. Aperiodic CSI reporting is triggered by a CSI request field in the DCI. The CSI request field indicates the CSI trigger state in the upper layer parameter CSI-AperiodicTriggerStateList. The CSI trigger state indicates the CSI reporting configuration and CSI-RS resource set used to calculate the CSI.

[0062] For TDCP reporting, the CSI-RS resources can be configured in at least one of the following ways:

[0063] The CSI reporting configuration is associated with the aperiodic CSI resource configuration.

[0064] The aperiodic CSI resource configuration includes a CSI-RS resource set.

[0065] For frequency range (FR) 1, the CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0066] For FR2, a CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0067] A trigger state is configured to link a CSI reporting configuration and a CSI-RS resource set contained within a CSI resource configuration.

[0068] The CSI-RS resource set contained within the CSI resource configuration should be configured to be quasi-co-located (QCL) with the SSB (synchronization signal and PBCH block) in terms of Doppler shift and mean delay (Type C) and spatial Rx parameters (Type D), if applicable.

[0069] The UE may assume that all CSI-RS resources associated with the CSI reporting configuration are QCL'd for Doppler shift, Doppler variance, mean delay, and delay variance (Type A), and Type D (if applicable).

[0070] Note that this method is only applicable for the case Y=1.

[0071] A CSI reporting configuration is associated with two aperiodic CSI resource configurations.

[0072] Each aperiodic CSI resource configuration includes a CSI-RS resource set.

[0073] The two CSI-RS resource sets included in the two CSI resource configurations should include the same number of CSI-RS resources.

[0074] For FR1, each CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0075] For FR2, each CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0076] The two CSI-RS resource sets included in the two CSI resource configurations are configured with different trigger time offsets.

[0077] A CSI trigger set is configured to link a CSI reporting configuration and two CSI-RS resource sets contained within two associated CSI resource configurations.

[0078] The two CSI-RS resource sets included within the two aperiodic CSI resource configurations should be configured to have the same SSB and QCL for Type C and Type D (if applicable).

[0079] The UE may assume that all CSI-RS resources associated with the CSI reporting configuration are QCL'd for Type A and Type D (if applicable).

[0080] Note that this method is only applicable for the case Y=1.

[0081] The CSI reporting configuration is associated with the aperiodic CSI resource configuration and the periodic CSI resource configuration.

[0082] The aperiodic and periodic CSI resource configurations each include a CSI-RS resource set.

[0083] The CSI-RS resource sets included in the aperiodic and periodic CSI resource configurations include the same number of CSI-RS resources.

[0084] For FR1, each CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0085] For FR2, each CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0086] Associated aperiodic and periodic CSI-RS should not be transmitted / received in overlapping slots.

[0087] A CSI trigger set is configured to link the CSI reporting configuration and the CSI-RS resource set included in the aperiodic and periodic CSI resource configuration.

[0088] The CSI-RS resource set included within the periodic CSI resource configuration is configured to be QCL'd with SSB for Type C and Type D (if applicable).

[0089] The CSI-RS resource sets included in the aperiodic CSI resource configuration are configured to be QCL'd with the CSI-RS resource sets included in the periodic CSI resource configuration for Type A and Type D (if applicable).

[0090] The UE may assume that all CSI-RS resources associated with the CSI reporting configuration are QCL'd for Type A and Type D (if applicable).

[0091] The CSI reporting configuration is associated with the periodic CSI resource configuration.

[0092] The periodic CSI resource configuration includes a CSI-RS resource set.

[0093] For FR1, the CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0094] For FR2, a CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0095] A trigger state is configured to link the CSI reporting configuration and the CSI-RS resource set included in the periodic CSI resource configuration.

[0096] The CSI-RS resource set contained within the CSI resource configuration is configured to be QCL'd with SSB for Type C and Type D (if applicable).

[0097] The UE may assume that all CSI-RS resources associated with the CSI report are QCL'd for Type A and Type D (if applicable).

[0098] Note that the method is applicable for both Y=1 and Y>1.

[0099] A CSI reporting configuration is associated with Y+1 periodic CSI resource configurations.

[0100] Each periodic CSI resource configuration includes a CSI-RS resource set.

[0101] For FR1, each CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0102] For FR2, each CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0103] All CSI-RS resources included in the same CSI-RS resource set are configured with the same periodicity and the same time offset.

[0104] The CSI-RS resources included in one of the Y+1 CSI-RS resource sets are configured with a periodicity of T, and the CSI-RS resources included in the other Y of the Y+1 CSI-RS resource sets are configured with a periodicity of MT, where M is an integer equal to or greater than 1.

[0105] CSI-RS resources contained within different CSI-RS resource sets are configured with different trigger time offsets.

[0106] CSI-RS resources included in different CSI resource sets should not be transmitted / received in overlapping slots.

[0107] A CSI trigger set is configured to link the CSI reporting configuration and the CSI-RS resource set included in the periodic CSI resource configuration.

[0108] The CSI-RS resource set included in the periodic CSI resource configuration should be configured to be QCL with the same SSB for Type C and Type D (if applicable).

[0109] The UE may assume that all CSI-RS resources associated with the CSI reporting configuration are QCL'd for Type A and Type D (if applicable).

[0110] Note that the method is applicable for both Y=1 and Y>1.

[0111] CSI reporting setting is 2 k , k≧1, where k is a parameter greater than or equal to 1.

[0112] Each periodic CSI resource configuration includes a CSI-RS resource set.

[0113] For FR1, each CSI-RS resource set includes four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0114] For FR2, each CSI-RS resource set includes two CSI-RS resources in one slot, or four CSI-RS resources in two consecutive slots with two CSI-RS resources in each slot.

[0115] All CSI-RS resources included in the same CSI-RS resource set are configured with the same periodicity and the same time offset.

[0116] 2 k The CSI-RS resources included in different CSI-RS resource sets are configured with the same periodicity P.

[0117] 2 k The CSI-RS resources included in the different CSI-RS resource sets are respectively time offset [ka] where X is a constant value.

[0118] CSI trigger set is 2 k The CSI reporting configuration and the two periodic CSI-RS resource configurations included in the periodic CSI-RS resource configurationsk The CSI-RS resource set is configured to link the CSI-RS resource sets.

[0119] 2 k 2 included in the periodic CSI-RS resource configuration k The CSI-RS resource set should be configured to have the same SSB and QCL for Type C and Type D (if applicable).

[0120] The UE may assume that all CSI-RS resources associated with the CSI reporting configuration are QCL'd for Type A and Type D (if applicable).

[0121] Note that the method is applicable for both Y=1 and Y>1.

[0122] IV. Embodiment 3: Amplitude and Phase Quantization Scheme in TDCP Reporting

[0123] The UE quantizes the amplitude of the channel correlation according to at least one of the following rules:

[0124] The quantization range is 0 to 1.

[0125] The quantization bit width is 3, 4, or 5.

[0126] The quantization bitwidth is a configurable higher layer parameter "AmplitudeQuantizationBitwidth".

[0127] The quantization granularity increases as the amplitude decreases.

[0128] The quantization granularity increases exponentially or linearly as the amplitude decreases.

[0129] If the quantization bit width is 3, the mapping between the amplitude indicator k and the amplitude |c| of the channel correlation is given by one of the following tables: [Table 1-1] [Table 1-2]

[0130] If the quantization bit width is 4, the mapping between the amplitude indicator k and the amplitude |c| of the channel correlation is given by one of the following tables: [Table 2-1] [Table 2-2]

[0131] If the quantization bit width is 5, the mapping between the amplitude indicator k and the amplitude |c| of the channel correlation is given by one of the following tables: [Table 3-1] [Table 3-2]

[0132] The UE quantizes the phase of the channel correlation according to one of the following methods.

[0133] The UE quantizes the phase of the channel correlation according to the higher layer parameter "PhaseQuantizationBitwidth", which indicates the quantization bit width, which can be configured as 3 or 4.

[0134] The mapping between the phase indicator l and the phase ang(c) of the channel correlation is determined by the parameter "PhaseQuantizationMode", whose possible values ​​are 0 and 1.

[0135] The UE determines the parameter "PhaseQuantizationMode" and reports it to the BS.

[0136] If the quantization bit width is configured as 3, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 4]

[0137] If the quantization bit width is configured as 4, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 5-1] [Table 5-2]

[0138] The UE quantizes the phase of the channel correlation according to the higher layer parameter "PhaseQuantizationBitwidth", which indicates the quantization bit width and can be configured as 3 or 4, and the higher layer parameter "QuantizationModeAdaption", which can be configured as "on" or "off".

[0139] If the higher layer parameter "QuantizationModeAdaption" is configured as "off", the mapping between the phase indicator l and the phase of the channel correlation is determined by the higher layer parameter "PhaseQuantizationBitwidth".

[0140] If the upper layer parameter "PhaseQuantizationBitwidth" is configured as 3, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by the following table: [Table 6]

[0141] If the upper layer parameter "PhaseQuantizationBitwidth" is configured as 4, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by the following table: [Table 7]

[0142] If the higher layer parameter "QuantizationModeAdaption" is configured as "on", the mapping between the phase indicator l and the phase of the channel correlation is determined by the higher layer parameter "PhaseQuantizationBitwidth" and the parameter "PhaseQuantizationMode", whose possible values ​​are 0 and 1.

[0143] The UE determines the parameter "PhaseQuantizationMode" and reports it to the BS.

[0144] If the quantization bit width is configured as 3, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 8]

[0145] If the quantization bit width is configured as 4, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 9-1] [Table 9-2]

[0146] The UE quantizes the phase of the channel correlation according to the higher layer parameter "PhaseQuantizationBitwidth", which indicates the quantization bit width and may be configured as 3 or 4, and the higher layer parameter "PhaseQuantizationMode", which may be configured as 0 or 1.

[0147] The mapping between the phase indicator l and the phase of the channel correlation is determined by the higher layer parameters "PhaseQuantizationBitwidth" and "PhaseQuantizationMode".

[0148] If the quantization bit width is configured as 3, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 10-1] [Table 10-2]

[0149] If the quantization bit width is configured as 4, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be determined by one of the following tables: [Table 11-1] [Table 11-2]

[0150] The quantization range of the phase is determined by the amplitude of the channel correlation.

[0151] This patent document provides a method for addressing the measurement and reporting issues of TDCP.

[0152] CSI-RS resource associated with the TDCP report

[0153] Quantization Scheme

[0154] One embodiment provides a flexible way to configure the CSI-RS resources used to measure TDCP, and one embodiment provides a highly efficient way to quantize the amplitude and phase of the channel correlation in the TDCP report.

[0155] 3 is an example flowchart for transmitting a TDCP report. Operation 302 includes receiving, by the wireless device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, where each CSI resource configuration of the one or more CSI resource configurations includes one CSI reference signal (CSI-RS) resource set, where the one CSI-RS resource set includes one or more CSI-RS resources. Operation 304 includes receiving, by the wireless device, a CSI trigger state list. Operation 306 includes determining, by the wireless device, time domain channel properties (TDCP) based on the CSI reporting configuration and the CSI trigger state list. Operation 308 includes transmitting, by the wireless device, a TDCP report. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0156] In some embodiments, the CSI reporting configuration is associated with an aperiodic CSI resource configuration, and the aperiodic CSI resource configuration includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state configured to link the CSI reporting configuration and the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL'd) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0157] In some embodiments, a CSI reporting configuration is associated with two aperiodic CSI resource configurations, the two aperiodic CSI resource configurations including two CSI-RS resource sets, each aperiodic CSI resource configuration including one CSI-RS resource set. In some embodiments, the two CSI-RS resource sets include the same number of CSI-RS resources. In some embodiments, the two CSI-RS resource sets are configured with different trigger time offsets. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the two CSI-RS resource sets. In some embodiments, the two CSI-RS resource sets are configured to be quasi-co-located (QCL) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0158] In some embodiments, the CSI reporting configuration is associated with an aperiodic CSI resource configuration and a periodic CSI resource configuration, where the aperiodic CSI resource configuration includes a first CSI-RS resource set and the periodic CSI resource configuration includes a second CSI-RS resource set. In some embodiments, the first CSI-RS resource set and the second CSI-RS resource set include the same number of CSI-RS resources. In some embodiments, the CSI-RS associated with the aperiodic CSI resource configuration and the CSI-RS associated with the periodic CSI resource configuration are not transmitted or received in overlapping slots. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the first CSI-RS resource set and the second CSI-RS resource set. In some embodiments, the second CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, the first CSI-RS resource set is configured to be quasi-co-located (QCL'd) with the second CSI-RS resource set with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0159] In some embodiments, the CSI reporting configuration is associated with a periodic CSI resource configuration, and the periodic CSI resource configuration includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state configured to link the CSI reporting configuration and the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL'd) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0160] In some embodiments, a CSI reporting configuration is associated with a first periodic CSI resource configuration and a second periodic CSI resource configuration, where the first periodic CSI resource configuration includes a first CSI-RS resource set and the second periodic CSI resource configuration includes a second CSI-RS resource set. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured with a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured with a second periodicity, and the first periodicity and the second periodicity have a mapping relationship. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured with the first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured with the second periodicity, and the second periodicity is obtained by multiplying the first periodicity by an integer equal to or greater than 1. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are configured with different trigger time offsets. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are not transmitted or received in overlapping slots. In some embodiments, the CSI trigger state list includes a CSI reporting configuration and a trigger set configured to link the first CSI-RS resource set and the second CSI-RS resource set. In some embodiments, the first CSI-RS resource set and the second CSI-RS resource set are configured to be quasi-co-located (QCL) with identical synchronization signal blocks (SSBs) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0161] In some embodiments, the CSI reporting configuration includes multiple periodic CSI resource configurations, and the multiple periodic CSI resource configurations include multiple CSI-RS resource sets, each periodic CSI resource configuration including one CSI-RS resource set. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured with the same periodicity. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured with a list of time offsets, and the list of time offsets is based on at least one of the periodicity, a predetermined value, and the number of the multiple periodic CSI resource configurations. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the multiple CSI-RS resource sets. In some embodiments, the multiple CSI-RS resource sets are configured to be quasi-co-located (QCL) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0162] 4 is an exemplary flowchart for transmitting an amplitude indicator. Operation 402 includes receiving, by the wireless device, higher layer parameters indicating a quantization bit width. Operation 404 includes determining, by the wireless device, an amplitude of a channel correlation. Operation 406 includes determining, by the wireless device, an amplitude indicator indicating a quantization amplitude based on the amplitude of the channel correlation and the quantization bit width. Operation 408 includes transmitting, by the wireless device, the amplitude indicator. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0163] In some embodiments, the quantized amplitude ranges from 0 to 1. In some embodiments, the quantized bit width is 3, 4, or 5. In some embodiments, the quantized granularity increases as the amplitude of the channel correlation decreases. In some embodiments, the quantized granularity increases exponentially or linearly as the amplitude of the channel correlation decreases. In some embodiments, the quantized bit width is 3, and the amplitude indicator k and the quantized amplitude of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship between the amplitude indicator k and the quantized amplitude of the channel correlation is as follows: k , 1 / 2 k Square root of 1 / 2 k 4th root of , 1 / 2 k , k / 8, k / 16, and k / 32. In some embodiments, the quantization bit width is 4, and the amplitude indicator k and the quantized amplitude of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is as follows: 1 / 2 k Square root of 1 / 2 k and a power of k / 16. In some embodiments, the amplitude indicator and the amplitude of the channel correlation have a first mapping relationship when the quantization bit width is 3, and the amplitude indicator and the amplitude of the channel correlation have a second mapping relationship when the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0164] 5 is an exemplary flowchart for transmitting a phase indicator. Operation 502 includes receiving, by the wireless device, higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter. Operation 504 includes determining, by the wireless device, a phase of a channel correlation. Operation 506 includes determining, by the wireless device, at least one of a phase indicator indicating a quantization phase of the channel correlation and a phase quantization mode parameter based on the phase of the channel correlation and the higher layer signaling. Operation 508 includes transmitting, by the wireless device, at least one of the phase indicator and the phase quantization mode parameter. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0165] In some embodiments, the quantization phase ranges from 0 to 2π. In some embodiments, the range of the quantization phase is determined by at least one of the following: 2π and the amplitude of the channel correlation. In some embodiments, the quantization bit width is 3 or 4. In some embodiments, the quantization granularity remains consistent within the range of the quantization phase. In some embodiments, the quantization bit width is 3, and the phase indicator l and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is associated with l×π / 4. In some embodiments, the quantization bit width is 4, and the phase indicator l and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is associated with l×π / 8. In some embodiments, the phase indicator and the phase of the channel correlation have a first mapping relationship when the quantization bit width is 3, and the phase indicator and the phase of the channel correlation have a second mapping relationship when the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0166] In some embodiments, the method further includes determining, by the wireless device, a value of a phase quantization mode parameter. In some embodiments, the value of the phase quantization mode parameter is 0 or 1. In some embodiments, the value of the phase quantization mode parameter is 0, indicating that the quantization granularity increases as the phase of the channel correlation increases. In some embodiments, the quantization granularity increases exponentially or linearly as the phase of the channel correlation increases. In some embodiments, the value of the phase quantization mode parameter is 1, indicating that the quantization granularity decreases as the phase of the channel correlation increases. In some embodiments, the quantization granularity decreases exponentially or linearly as the phase of the channel correlation increases. In some embodiments, the value of the phase quantization mode parameter is 0, the quantization bit width is 3, and the phase indicator and the phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship between the phase indicator 1 and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , 1 / 8, and 1 / 16. In some embodiments, the value of the phase quantization mode parameter is 0, the quantization bit width is 4, and the phase indicator 1 and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is one of the following: 2π, 1 / 2 l and a power of 1 / 16. In some embodiments, the phase of the phase indicator and the channel correlation have a first mapping relationship when the value of the phase quantization mode parameter is 0 and the quantization bit width is 3, and the phase of the phase indicator and the channel correlation have a second mapping relationship when the value of the phase quantization mode parameter is 0 and the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0167] In some embodiments, the higher layer signaling includes a phase quantization bit width, and a mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of the phase quantization bit width and the phase quantization mode parameter. In some embodiments, the higher layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, and the quantization mode adaptation parameter is set as "on", and the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width and the quantization mode adaptation parameter. In some embodiments, the higher layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, and the quantization mode adaptation parameter is set as "off", and the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width. In some embodiments, the mapping relationship between the phase indicator ℓ and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , the square root of 1 / 7, 1 / 8, 1 / 15, and 1 / 16.

[0168] 6 is another example flowchart for transmitting a phase indicator. Operation 602 includes receiving, by the wireless device, higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. Operation 604 includes determining, by the wireless device, a phase of the channel correlation. Operation 606 includes determining, by the wireless device, a phase indicator indicating a quantization phase of the channel correlation based on the phase of the channel correlation and the higher layer signaling. Operation 608 includes transmitting, by the wireless device, the phase indicator. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0169] In some embodiments, the mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of the phase quantization bit width and the phase quantization mode parameter. In some embodiments, the mapping relationship between the phase indicator 1 and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , the square root of 1 / 7, 1 / 8, 1 / 15, and 1 / 16.

[0170] 7 is an example flowchart for receiving a TDCP report. Operation 702 includes transmitting, by the network device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, where each CSI resource configuration of the one or more CSI resource configurations includes one CSI reference signal (CSI-RS) resource set, and the one CSI-RS resource set includes one or more CSI-RS resources. Operation 704 includes transmitting, by the network device, a CSI trigger state list. Operation 706 includes receiving, by the network device, a time domain channel property (TDCP) report based on the CSI reporting configuration and the CSI trigger state list. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0171] In some embodiments, the CSI reporting configuration is associated with an aperiodic CSI resource configuration, and the aperiodic CSI resource configuration includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state configured to link the CSI reporting configuration and the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL'd) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0172] In some embodiments, a CSI reporting configuration is associated with two aperiodic CSI resource configurations, the two aperiodic CSI resource configurations including two CSI-RS resource sets, each aperiodic CSI resource configuration including one CSI-RS resource set. In some embodiments, the two CSI-RS resource sets include the same number of CSI-RS resources. In some embodiments, the two CSI-RS resource sets are configured with different trigger time offsets. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the two CSI-RS resource sets. In some embodiments, the two CSI-RS resource sets are configured to be quasi-co-located (QCL) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0173] In some embodiments, the CSI reporting configuration is associated with an aperiodic CSI resource configuration and a periodic CSI resource configuration, where the aperiodic CSI resource configuration includes a first CSI-RS resource set and the periodic CSI resource configuration includes a second CSI-RS resource set. In some embodiments, the first CSI-RS resource set and the second CSI-RS resource set include the same number of CSI-RS resources. In some embodiments, the CSI-RS associated with the aperiodic CSI resource configuration and the CSI-RS associated with the periodic CSI resource configuration are not transmitted or received in overlapping slots. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the first CSI-RS resource set and the second CSI-RS resource set. In some embodiments, the second CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, the first CSI-RS resource set is configured to be quasi-co-located (QCL'd) with the second CSI-RS resource set with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0174] In some embodiments, the CSI reporting configuration is associated with a periodic CSI resource configuration, and the periodic CSI resource configuration includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state configured to link the CSI reporting configuration and the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL'd) with a synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0175] In some embodiments, a CSI reporting configuration is associated with a first periodic CSI resource configuration and a second periodic CSI resource configuration, where the first periodic CSI resource configuration includes a first CSI-RS resource set and the second periodic CSI resource configuration includes a second CSI-RS resource set. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured with a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured with a second periodicity, and the first periodicity and the second periodicity have a mapping relationship. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured with the first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured with the second periodicity, and the second periodicity is obtained by multiplying the first periodicity by an integer equal to or greater than 1. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are configured with different trigger time offsets. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are not transmitted or received in overlapping slots. In some embodiments, the CSI trigger state list includes a CSI reporting configuration and a trigger set configured to link the first CSI-RS resource set and the second CSI-RS resource set. In some embodiments, the first CSI-RS resource set and the second CSI-RS resource set are configured to be quasi-co-located (QCL) with identical synchronization signal blocks (SSBs) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0176] In some embodiments, the CSI reporting configuration includes multiple periodic CSI resource configurations, and the multiple periodic CSI resource configurations include multiple CSI-RS resource sets, each periodic CSI resource configuration including one CSI-RS resource set. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured with the same periodicity. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured with a list of time offsets, and the list of time offsets is based on at least one of the periodicity, a predetermined value, and the number of the multiple periodic CSI resource configurations. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the multiple CSI-RS resource sets. In some embodiments, the multiple CSI-RS resource sets are configured to be quasi-co-located (QCL) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with a CSI reporting configuration are quasi-co-located (QCL'd) with respect to at least one of the following parameters: Doppler shift, Doppler variance, mean delay, delay variance, and spatial Rx parameters.

[0177] 8 is an example flowchart for receiving an amplitude indicator. Operation 802 includes transmitting, by the network device, higher layer parameters indicating a quantization bitwidth. Operation 804 includes transmitting, by the network device, an amplitude of a channel correlation. Operation 806 includes receiving, by the network device, an amplitude indicator indicating the quantization amplitude, the amplitude indicator being based on the amplitude of the channel correlation and the quantization bitwidth. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0178] In some embodiments, the quantized amplitude ranges from 0 to 1. In some embodiments, the quantized bit width is 3, 4, or 5. In some embodiments, the quantization granularity increases as the amplitude of the channel correlation decreases. In some embodiments, the quantization granularity increases exponentially or linearly as the amplitude of the channel correlation decreases. In some embodiments, the quantized bit width is 3, and the amplitude indicator and the amplitude of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship between the amplitude indicator k and the quantized amplitude of the channel correlation is as follows: k , 1 / 2 k Square root of 1 / 2 k 4th root of , 1 / 2 k , k / 8, k / 16, and k / 32. In some embodiments, the quantization bit width is 4, and the amplitude indicator k and the quantized amplitude of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is as follows: 1 / 2 k Square root of 1 / 2 k and a power of k / 16. In some embodiments, the amplitude indicator and the amplitude of the channel correlation have a first mapping relationship when the quantization bit width is 3, and the amplitude indicator and the amplitude of the channel correlation have a second mapping relationship when the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0179] 9 is an example flowchart for receiving a phase indicator. Operation 902 includes transmitting, by the network device, higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter. Operation 904 includes transmitting, by the network device, a phase of the channel correlation. Operation 906 includes receiving, by the network device, at least one of a phase indicator and a phase quantization mode parameter indicating a quantized phase of the channel correlation, where the phase indicator is based on the phase of the channel correlation and the higher layer signaling. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0180] In some embodiments, the quantization phase ranges from 0 to 2π. In some embodiments, the range of the quantization phase is determined by at least one of the following: 2π and the amplitude of the channel correlation. In some embodiments, the quantization bit width is 3 or 4. In some embodiments, the quantization granularity remains consistent within the range of the quantization phase. In some embodiments, the quantization bit width is 3, and the phase indicator l and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is associated with l×π / 4. In some embodiments, the quantization bit width is 4, and the phase indicator l and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is associated with l×π / 8. In some embodiments, the phase indicator and the phase of the channel correlation have a first mapping relationship when the quantization bit width is 3, and the phase indicator and the phase of the channel correlation have a second mapping relationship when the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0181] In some embodiments, the method further includes receiving, by the network device, a value of a phase quantization mode parameter. In some embodiments, the value of the phase quantization mode parameter is 0 or 1. In some embodiments, the value of the phase quantization mode parameter is 0, indicating that the quantization granularity increases as the phase of the channel correlation increases. In some embodiments, the quantization granularity increases exponentially or linearly as the phase of the channel correlation increases. In some embodiments, the value of the phase quantization mode parameter is 1, indicating that the quantization granularity decreases as the phase of the channel correlation increases. In some embodiments, the quantization granularity decreases exponentially or linearly as the phase of the channel correlation increases. In some embodiments, the value of the phase quantization mode parameter is 0, the quantization bit width is 3, and the phase indicator l and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship between the phase indicator l and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , 1 / 8, and 1 / 16. In some embodiments, the value of the phase quantization mode parameter is 0, the quantization bit width is 4, and the phase indicator 1 and the quantized phase of the channel correlation have a mapping relationship. In some embodiments, the mapping relationship is one of the following: 2π, 1 / 2 l and a power of 1 / 16. In some embodiments, the phase of the phase indicator and the channel correlation have a first mapping relationship when the value of the phase quantization mode parameter is 0 and the quantization bit width is 3, and the phase of the phase indicator and the channel correlation have a second mapping relationship when the value of the phase quantization mode parameter is 0 and the quantization bit width is 4, and the first mapping relationship and the second mapping relationship are different.

[0182] In some embodiments, the higher layer signaling includes a phase quantization bit width, and a mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of the phase quantization bit width and the phase quantization mode parameter. In some embodiments, the higher layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, and the quantization mode adaptation parameter is set as "on", and the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width and the quantization mode adaptation parameter. In some embodiments, the higher layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, and the quantization mode adaptation parameter is set as "off", and the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width. In some embodiments, the mapping relationship between the phase indicator ℓ and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , the square root of 1 / 7, 1 / 8, 1 / 15, and 1 / 16.

[0183] 10 is another example flowchart for receiving a phase indicator. Operation 1002 includes transmitting, by the network device, higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. Operation 1004 includes transmitting, by the network device, a phase of the channel correlation. Operation 1006 includes receiving, by the network device, a phase indicator indicating a quantized phase of the channel correlation, the phase indicator being based on the phase of the channel correlation and the higher layer signaling. In some embodiments, the method can be implemented according to embodiments 1-3. In some embodiments, performing further steps of the method can be based on system performance superior to legacy protocols.

[0184] In some embodiments, the mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of the phase quantization bit width and the phase quantization mode parameter. In some embodiments, the mapping relationship between the phase indicator 1 and the quantized phase of the channel correlation is as follows: 2π, ½ l , 1 / 2 l , the square root of 1 / 7, 1 / 8, 1 / 15, and 1 / 16.

[0185] FIG. 11 shows an example block diagram of a hardware platform 1100 that may be part of a network device (e.g., a base station) or a communication device (e.g., user equipment (UE)). The hardware platform 1100 includes at least one processor 1110 and a memory 1105 on which instructions are stored. The instructions, upon execution by the processor 1110, configure the hardware platform 1100 to perform the operations described in FIGS. 1-10 and various embodiments described in this patent document. The transmitter 1115 transmits or sends information or data to another device. For example, a network device transmitter may send a message to a user equipment. The receiver 1120 receives information or data transmitted or sent by another device. For example, a user equipment may receive a message from a network device. For example, a UE or a network device may be implemented using the hardware platform 1100 as described herein.

[0186] Implementations such as those discussed above would be applied to wireless communications. Figure 12 shows an example of a wireless communication system (e.g., a 5G or NR cellular network) including a base station 1220 and one or more user equipments (UEs) 1211, 1212, and 1213. In some embodiments, the UE accesses a BS (e.g., a network) using a communication link to the network (as depicted by dashed arrows 1231, 1232, 1233, sometimes referred to as the uplink direction), which then enables subsequent communication from the BS to the UE (e.g., shown in the direction from the network to the UE, sometimes referred to as the downlink direction, as indicated by arrows 1241, 1242, 1243). In some embodiments, the BS transmits information to the UE (sometimes referred to as the downlink direction, as depicted by arrows 1241, 1242, 1243), which then enables subsequent communication from the UE to the BS (e.g., shown in the UE-to-BS direction, sometimes referred to as the uplink direction, as depicted by dashed arrows 1231, 1232, 1233). The UE may be, for example, a smartphone, a tablet, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, etc. The UEs described herein may be communicatively coupled to a base station 1220 depicted in FIG. 12. The UE may also communicate with the BS for CSI communication.

[0187] It will be understood by those skilled in the art that this document discloses a method for determining a more accurate precoding matrix, especially when different frequency locations correspond to different precoding matrices, while the overhead of reporting the precoding matrix by the UE (or being notified by the base station) does not increase. More accurate channel state information can be obtained for the more accurate precoding matrix. Then, the spectral efficiency is improved.

[0188] Some of the embodiments described herein are described in the general context of a method or process, which in one embodiment may be implemented by a computer program product embodied in a computer-readable medium including computer-executable instructions, such as program code, executed by computers in a networked environment. Computer-readable media may include removable and non-removable storage devices, including, but not limited to, read-only memory (ROM), random access memory (RAM), compact discs (CDs), digital versatile discs (DVDs), and the like. Thus, computer-readable media may include non-transitory storage media. Generally, program modules may include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. Computer- or processor-executable instructions, associated data structures, and program modules represent examples of program code for executing steps of the methods disclosed herein. The particular sequence of such executable instructions or associated data structures represents examples of corresponding acts for implementing the functions described in such steps or processes.

[0189] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuits, software, or a combination thereof. For example, a hardware circuit implementation may include discrete analog and / or discrete digital components integrated, for example, as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules can be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate array (FPGA) devices. Some implementations may also or alternatively include a digital signal processor (DSP), which is a specialized microprocessor with an architecture optimized for the needs of digital signal processing operations associated with the disclosed functionality. Similarly, various components or subcomponents within each module may be implemented in software, hardware, or firmware. Connectivity between modules and / or components within a module may be provided using any one of connectivity methods and mediums known in the art, including, but not limited to, communication via the Internet, wired, or wireless networks using appropriate protocols.

[0190] While this document contains many details, these should be construed as descriptions of features specific to particular embodiments, rather than as limitations on the scope of the claimed invention or what may be claimed. Certain features described herein in the context of a separate embodiment can also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments separately or in any suitable subcombination. Also, while features may be described above as acting in a combination and even initially claimed as such, one or more features from the claimed combination can, in some cases, be deleted from the combination, and the claimed combination may be directed to a subcombination or a variation of the subcombination. Similarly, although acts may be depicted in a particular order in the figures, this should not be understood as requiring such acts to be performed in the particular order shown, or in a sequential order, or that all of the illustrated acts be performed, to achieve desirable results.

[0191] Only a few implementations and examples are described; other implementations, extensions, and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. 1. A method of wireless communication, comprising: receiving, by a wireless device, a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, each CSI resource configuration of the one or more CSI resource configurations including one CSI reference signal (CSI-RS) resource set, the one CSI-RS resource set including one or more CSI-RS resources; receiving, by the wireless device, a CSI trigger state list; determining, by the wireless device, time domain channel properties (TDCP) based on the CSI reporting configuration and the CSI trigger state list; the wireless device transmitting a TDCP report; A method comprising:

2. 2. The method of claim 1, wherein the CSI reporting configuration is associated with two aperiodic CSI resource configurations, the two aperiodic CSI resource configurations including two CSI-RS resource sets, each aperiodic CSI resource configuration including one CSI-RS resource set.

3. The method of claim 2 , wherein the two CSI-RS resource sets include the same number of CSI-RS resources.

4. The method of claim 2 or 3, wherein the two CSI-RS resource sets are configured with different trigger time offsets.

5. The method according to any one of claims 2 to 4, wherein the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the two CSI-RS resource sets.

6. The method of any of claims 2-5, wherein the two CSI-RS resource sets are configured to be quasi-co-located (QCL) with the same synchronization signal block (SSB) with respect to at least one of the following: Doppler shift, mean delay, and spatial Rx parameters.

7. 2. The method of claim 1, wherein the CSI reporting configuration is associated with an aperiodic CSI resource configuration and a periodic CSI resource configuration, the aperiodic CSI resource configuration including a first CSI-RS resource set, and the periodic CSI resource configuration including a second CSI-RS resource set.

8. The method of claim 7 , wherein the first CSI-RS resource set and the second CSI-RS resource set include the same number of CSI-RS resources.

9. The method of claim 7 or 8, wherein the CSI-RS associated with the aperiodic CSI resource configuration and the CSI-RS associated with the periodic CSI resource configuration are not transmitted or received in overlapping slots.

10. The method of any of claims 7 to 9, wherein the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the first CSI-RS resource set and the second CSI-RS resource set.

11. 11. The method of claim 7, wherein the second CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) with respect to at least one of the following parameters: Doppler shift, mean delay, and spatial Rx parameters.

12. 11. The method of claim 7, wherein the first CSI-RS resource set is configured to be quasi-co-located (QCL) with the second CSI-RS resource set with respect to at least one of the following parameters: Doppler shift, Doppler spread, mean delay, delay spread, and spatial Rx parameters.

13. 2. The method of claim 1, wherein the CSI reporting configuration is associated with a first periodic CSI resource configuration and a second periodic CSI resource configuration, the first periodic CSI resource configuration including a first CSI-RS resource set, and the second periodic CSI resource configuration including a second CSI-RS resource set.

14. 14. The method of claim 13, wherein CSI-RS resources included in the first CSI-RS resource set are configured with a first periodicity and CSI-RS resources included in the second CSI-RS resource set are configured with a second periodicity, the second periodicity being obtained by multiplying the first periodicity by an integer equal to or greater than 1.

15. 15. The method of claim 13, wherein the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are configured with a list of time offsets, the list of time offsets being based on at least one of the following: a periodicity of the CSI-RS resources included in the first CSI-RS resource set, a predetermined value, and a number of periodic CSI resource configurations.

16. The method according to any one of claims 13 to 15, wherein the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are not transmitted or received in overlapping slots.

17. The method of any of claims 13 to 16, wherein the CSI trigger state list includes a trigger set configured to link the CSI reporting configuration and the first CSI-RS resource set and the second CSI-RS resource set.

18. 18. The method of claim 13, wherein the first CSI-RS resource set and the second CSI-RS resource set are configured to be quasi-co-located (QCL) with identical synchronization signal blocks (SSBs) for at least one of the following: Doppler shift, mean delay, and spatial Rx parameters.

19. 1. A method of wireless communication, comprising: receiving, at the wireless device, an upper layer parameter indicating a quantization bitwidth; determining a channel correlation amplitude by the wireless device; determining, by the wireless device, an amplitude indicator indicative of a quantized amplitude of the channel correlation based on the amplitude of the channel correlation and the quantization bit width; the wireless device transmitting the amplitude indicator; A method comprising:

20. 20. The method of claim 19, wherein quantization granularity increases as the amplitude of the channel correlation decreases.

21. 20. The method of claim 19, wherein quantization granularity increases exponentially or linearly as the amplitude of the channel correlation decreases.

22. The mapping relationship between the amplitude indicator k and the quantized amplitude of the channel correlation is as follows: ｋ , 1 / 2 ｋ Square root of 1 / 2 ｋ The fourth root of 1 / 2 ｋ 22. The method of claim 19, wherein the k-th power is associated with at least one of the eighth root of k, k / 8, k / 16, and k / 32.

23. 1. A method of wireless communication, comprising: receiving, by the wireless device, higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter; determining a phase of a channel correlation by the wireless device; determining, by the wireless device, at least one of a phase indicator indicating a quantization phase of the channel correlation and a phase quantization mode parameter based on the phase of the channel correlation and the higher layer signaling; the wireless device transmitting at least one of the phase indicator and the phase quantization mode parameter; A method comprising:

24. 24. The method of claim 23, wherein the higher layer signaling includes the phase quantization bit width, and wherein a mapping between the phase indicator and a quantized phase of the channel correlation is determined by at least one of the phase quantization bit width and the phase quantization mode parameter.

25. 24. The method of claim 23, wherein the higher layer signaling includes the phase quantization bit width and the quantization mode adaptation parameter, the quantization mode adaptation parameter is set as “on”, and a mapping between the phase indicator and a quantized phase of the channel correlation is determined by the phase quantization bit width and the phase quantization mode parameter.

26. 24. The method of claim 23, wherein the higher layer signaling includes the phase quantization bitwidth and the quantization mode adaptation parameter, the quantization mode adaptation parameter is set as “off”, and a mapping between the phase indicator and a quantized phase of the channel correlation is determined by the phase quantization bitwidth.

27. 1. A method of wireless communication, comprising: receiving, by a wireless device, higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter; determining a phase of a channel correlation by the wireless device; determining, by the wireless device, a phase indicator indicative of a quantized phase of the channel correlation based on the phase of the channel correlation and the higher layer signaling; the wireless device transmitting the phase indicator; A method comprising:

28. 28. The method of claim 27, wherein a mapping between the phase indicator and a quantized phase of the channel correlation is determined by at least one of the phase quantization bitwidth and the phase quantization mode parameter.

29. The mapping relationship between the phase indicator l and the quantized phase of the channel correlation is as follows: ｌ , 1 / 2 ｌ 28. The method of claim 27, wherein the eigenvalue is associated with at least one of the square roots of 1 / 7, 1 / 8, 1 / 15, and 1 / 16.

30. 1. A method of wireless communication, comprising: a network device transmitting a channel state information (CSI) reporting configuration associated with one or more CSI resource configurations, each CSI resource configuration of the one or more CSI resource configurations including one CSI reference signal (CSI-RS) resource set, the one CSI-RS resource set including one or more CSI-RS resources; The network device transmitting a CSI trigger state list; receiving a time domain channel property (TDCP) report based on the CSI reporting configuration and the CSI trigger state list by the network device; A method comprising:

31. 1. A method of wireless communication, comprising: The network device transmits an upper layer parameter indicating a quantization bit width; the network device transmitting a channel correlation amplitude; receiving, by the network device, an amplitude indicator indicative of a quantized amplitude of a channel correlation, the amplitude indicator being based on the amplitude of the channel correlation and the quantization bit width; A method comprising:

32. 1. A method of wireless communication, comprising: a network device transmitting higher layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter; the network device transmitting a phase of a channel correlation; receiving, by the network device, at least one of a phase indicator indicating a quantization phase of a channel correlation and a phase quantization mode parameter, the phase indicator being based on the phase of the channel correlation and the higher layer signaling; A method comprising:

33. 1. A method of wireless communication, comprising: a network device transmitting higher layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter; the network device transmitting a phase of a channel correlation; receiving, by the network device, a phase indicator indicative of a quantized phase of a channel correlation, the phase indicator being based on the phase of the channel correlation and the higher layer signaling; A method comprising:

34. An apparatus for wireless communication comprising a processor, said processor configured to implement a method according to any of claims 1-33.

35. A computer readable program storage medium having stored thereon code which, when executed by a processor, causes the processor to implement a method according to any of claims 1-33.

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