Channel state information reference signal resource configuration and quantization method in time domain channel characteristic report

Abstract

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

Description

Technical Field

[0001] This disclosure document relates generally to digital wireless communications. Background Art

[0002] Mobile telecommunications are driving the world towards an increasingly connected and networked society. Next-generation systems and wireless communication technologies will need to support a much wider range of use cases and offer a more complex and refined range of access requirements and flexibility than existing wireless networks.

[0003] Long Term Evolution (LTE) is a standard developed by the 3rd Generation Partnership Project (3GPP) for wireless communications for mobile devices and data terminals. LTE-Advanced (LTE-A) is a wireless communications standard that enhances the LTE standard. The fifth generation of wireless systems (referred to as 5G) advances the LTE and LTE-A wireless standards and is designed to support higher data rates, numerous connections, ultra-low latency, high reliability, and other emerging service requirements. Summary of the Invention

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

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

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

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

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

[0009] A fifth example wireless communication method includes: transmitting, by a network device, a CSI report setting associated with one or more channel state information (CSI) resource settings, wherein each of the one or more CSI resource settings includes a CSI reference signal (CSI-RS) resource set, and wherein the one CSI-RS resource set includes one or more CSI-RS resources. The method also includes: transmitting, by the network device, a CSI triggering state list. The method also includes: receiving, by the network device, a time domain channel characteristic (TDCP) report based on the CSI report setting and the CSI triggering state list.

[0010] A sixth exemplary wireless communication method includes transmitting, by a network device, a high-layer parameter indicating a quantization bit width and transmitting, by the network device, a magnitude of a channel correlation. The method also includes receiving, by the network device, a magnitude indicator indicating the quantized magnitude, wherein the magnitude indicator is based on the magnitude of the channel correlation line and the quantization bit width.

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

[0012] An eighth example wireless communication method includes: transmitting, by a network device, higher-layer signaling, the higher-layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. The method also includes: transmitting, by the network device, a phase of a channel correlation. The method also includes: receiving, by the network device, a phase indicator indicating a quantized phase of the channel correlation, wherein the phase indicator is 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 another exemplary embodiment, the method described above is embodied in the form of processor-executable code and stored in a non-transitory computer-readable storage medium. When the code included in the computer-readable storage medium is executed by a processor, the processor implements the method described in this disclosure document.

[0015] The above aspects and other aspects and their implementations are described in more detail in the drawings, description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exemplary remote radio head (RRH) arrangement is shown.

[0017] Figure 2 An exemplary framework for channel state information (CSI) reference signal (CSI-RS) resource configuration is shown.

[0018] Figure 3 is an exemplary flow chart for sending a time domain channel characteristics (TDCP) report.

[0019] Figure 4 is an exemplary flow chart for transmitting an amplitude indicator.

[0020] Figure 5 is an exemplary flow chart for sending a phase indicator.

[0021] Figure 6 is another exemplary flow chart for sending a phase indicator.

[0022] Figure 7 is an exemplary flow chart for receiving a TDCP report.

[0023] Figure 8 is an exemplary flow chart for receiving an amplitude indicator.

[0024] Figure 9 is an exemplary flow chart for receiving a phase indicator.

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

[0026] Figure 11 An exemplary block diagram of a hardware platform that may be part of a network device or a communication device is shown.

[0027] Figure 12 An exemplary wireless communication based on some implementations of the disclosed technology is shown, the exemplary wireless communication including a base station (BS) and a user equipment (UE). DETAILED DESCRIPTION

[0028] The example titles used for the various sections below are intended to facilitate understanding of the disclosed subject matter and do not in any way limit the scope of the claimed subject matter. Accordingly, one or more features of one example section may be combined with one or more features of another example section. In addition, for clarity of explanation, 5G terminology is used, but the technology disclosed in this document is not limited to 5G technology and can be used in wireless systems that implement other protocols.

[0029] I. Overview

[0030] In many cases, a base station (BS) is expected to provide data transmission services for multiple user equipments (UEs) with different mobile speeds. Different mobile speeds will result in different channel change speeds between the BS and the UE. In order to improve the quality of service, the BS needs to obtain the time domain channel characteristics (TDCP), which is a type of channel state information (CSI) that represents the channel change speed, and configure corresponding service policies for different UEs accordingly. Typically, TDCP is measured by the UE through a tracking reference signal (TRS) and then reported to the BS. However, the quantization scheme in the CSI-RS resource configuration and TDCP reporting has not yet been specified.

[0031] In this disclosure document, the following implementations are provided to address the issue of TDCP report configuration:

[0032] CSI-RS resources associated with TDCP reporting;

[0033] Quantitative plan.

[0034] Details of implementation are given below.

[0035] TDCP is a type of CSI that indicates the speed of change of the channel between the UE and the BS. TDCP is usually used in two scenarios: high-speed railway scenarios and highway scenarios. Figure 1Figure 3 shows a high-speed railway scenario, where there are six remote radio heads (RRHs). To save on handovers, some of the RRHs correspond to the same cell. This means there are long, narrow cells along the railway. Similarly, there are several transmit / receive points (TRPs) deployed along the highway.

[0036] Typically, TDCP reports include one or more magnitudes and / or phases of channel correlation. The channel correlation c(τ) is measured using a special type of CSI-RS (called TRS), where two or four CSI-RS resources are configured for TRS in two consecutive slots. Detailed specifications for TRS can be found in [TS 38.214, clause 5.1.6.1.1].

[0037] Although the current specifications [TS 38.212 38.214] have specified the reporting configuration of CSI in terms of length, these specifications may not be suitable for TDCP because TDCP is very different from other CSI in terms of reporting quantity and measurement mechanism.

[0038] In this disclosure document, three embodiments are provided to address the reporting configuration issue of TDCP, including aspects of CSI-RS resources associated with TDCP reporting, CSI-RS transmission for calculating TDCP, and quantization schemes for reporting amounts.

[0039] First, explanations of some terms to be used in this disclosure document are provided.

[0040] Note that in this disclosure document, "UE" corresponds to a wireless communication device.

[0041] Note that in this disclosure document, "BS" is equivalent to a wireless network device, a next-generation Node B (gNB), or a TRP.

[0042] Note that in this disclosure document, "TRS" is equivalent to RS, CSI-RS, tracking CSI-RS, and CSI-RS for tracking.

[0043] Note that in this disclosure document, “CSI-RS resource” corresponds to non-zero power (NZP) CSI-RS resource, and “CSI-RS resource set” corresponds to NZP CSI-RS resource set.

[0044] Note that in this disclosure document, “TDCP” is equivalent to CSI, and “TDCP report” is equivalent to CSI report.

[0045] Note that in this disclosure document, “higher layer signaling” or “higher layer parameters” are equivalent to radio resource control (RRC), RRC parameters, radio resource management (RRM), radio resource allocation (RRA), downlink control information (DCI), or physical downlink control channel (PDCCH).

[0046] Note that in this disclosure document, a "time unit" may be a sub-symbol, a symbol, a time slot, a sub-frame, a frame, or a transmission opportunity.

[0047] Note that in this disclosure document, “channel correlation” is equivalent to channel autocorrelation and channel correlation coefficient.

[0048] II. Implementation 1: General Description

[0049] The TDCP measurement and reporting process typically includes the following steps:

[0050] The UE receives higher layer signaling.

[0051] The UE receives the DCI that triggers the TDCP report.

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

[0053] The TDCP report includes the following quantities:

[0054] Y ≥ 1 amplitude of channel correlation;

[0055] If the high-level parameter "PhaseReport" is configured as "on", the channel correlation Y ≥ 1 phase.

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

[0057]

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

[0059] The UE reports the TDCP to the BS through a Physical Uplink Shared Channel (PUSCH) indicated by the DCI.

[0060] III. Implementation 2: CSI-RS resources associated with TDCP reporting

[0061] exist Figure 2A general CSI-RS resource configuration framework is shown in Figure 1. A CSI report setting is associated with one or more periodic and / or aperiodic CSI resource settings. Each CSI resource setting 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 the CSI request field in the DCI. The CSI request field indicates the CSI triggering state in the higher-layer parameter CSI-AperiodicTriggerStateList. The CSI triggering state indicates the CSI report setting and CSI-RS resource set used to calculate the CSI.

[0062] For TDCP reporting, CSI-RS resources may be configured using at least one of the following methods:

[0063] The CSI reporting setting is associated with the aperiodic CSI resource setting;

[0064] The aperiodic CSI resource setting 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 time slots, with two CSI-RS resources in each time slot;

[0066] For FR 2, 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] The trigger state is configured to link the CSI report setting with the CSI-RS resource set included in the CSI resource setting;

[0068] The CSI-RS resource sets included in the CSI resource setting shall be configured to be quasi-co-located (QCL) with the (synchronization signal and PBCH block) SSB for Doppler shift and average delay (Type C) and spatial Rx parameters (Type D) (if applicable);

[0069] The UE may assume that all CSI-RS resources associated with a CSI reporting setting are QCLed for Doppler shift, Doppler spread, average delay and delay spread (Type A) and Type D if applicable.

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

[0071] The CSI reporting setting is associated with two aperiodic CSI resource settings.

[0072] Each aperiodic CSI resource setting includes a CSI-RS resource set;

[0073] The two CSI-RS resource sets included in the two CSI resource settings shall include the same number of CSI-RS resources;

[0074] For FR 1, each CSI-RS resource set includes four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0075] For FR 2, each CSI-RS resource set includes two CSI-RS resources in one time slot, or four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0076] Two CSI-RS resource sets included in two CSI resource settings are configured to have different triggering time offsets;

[0077] The CSI triggering set is configured to link a CSI reporting setting with two CSI-RS resource sets included in two associated CSI resource settings;

[0078] The two CSI-RS resource sets included in the two aperiodic CSI resource settings should be configured to be QCLed with the same SSB for Type C and Type D (if applicable);

[0079] The UE may assume that all CSI-RS resources associated with a CSI reporting setting are QCLed for Type A and Type D (if applicable).

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

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

[0082] Each of the aperiodic CSI resource setting and the periodic CSI resource setting includes a CSI-RS resource set;

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

[0084] For FR 1, each CSI-RS resource set includes four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0085] For FR 2, each CSI-RS resource set includes two CSI-RS resources in one time slot, or four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0086] The associated aperiodic CSI-RS and periodic CSI-RS should not be transmitted / received in overlapping time slots;

[0087] The CSI triggering set is configured to link the CSI report setting with the CSI-RS resource set included in the aperiodic CSI resource setting and the periodic CSI resource setting;

[0088] The CSI-RS resource sets included in the periodic CSI resource setting are configured to be QCLed with SSB for Type C and Type D (if applicable);

[0089] The CSI-RS resource sets included in the aperiodic CSI resource setting are configured to be QCLed with the CSI-RS resource sets included in the periodic CSI resource setting for type A and type D (if applicable);

[0090] The UE may assume that all CSI-RS resources associated with a CSI reporting setting are QCLed for Type A and Type D (if applicable).

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

[0092] The periodic CSI resource setting includes a CSI-RS resource set;

[0093] For FR 1, the CSI-RS resource set includes four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0094] For FR 2, 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] The trigger state is configured to link the CSI report setting with the CSI-RS resource set included in the periodic CSI resource setting;

[0096] The CSI-RS resource sets included in the CSI resource setting are configured to be QCLed with SSB for Type C and Type D (if applicable);

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

[0098] Note that this approach applies to both the cases Y=1 and Y>1.

[0099] The CSI reporting setting is associated with Y+1 periodic CSI resource settings.

[0100] Each periodic CSI resource setting includes a CSI-RS resource set;

[0101] For FR 1, each CSI-RS resource set includes four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0102] For FR 2, each CSI-RS resource set includes two CSI-RS resources in one time slot, or four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0103] All CSI-RS resources included in the same CSI-RS resource set are configured to have the same period and the same time offset;

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

[0105] The CSI-RS resources included in different CSI-RS resource sets are configured to have different triggering time offsets;

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

[0107] The CSI triggering set is configured to link the CSI reporting setting with the CSI-RS resource set included in the periodic CSI resource setting;

[0108] The two CSI-RS resource sets included in the periodic CSI resource setting should be configured to be QCLed with the same SSB for Type C and Type D (if applicable);

[0109] The UE may assume that all CSI-RS resources associated with a CSI reporting setting are QCLed for Type A and Type D (if applicable).

[0110] Note that this approach applies to both the cases Y=1 and Y>1.

[0111] CSI report settings and 2 k The periodic CSI resource settings are associated with k≥1 periodic CSI resource settings, where k is a parameter greater than or equal to 1.

[0112] Each periodic CSI resource setting includes a CSI-RS resource set;

[0113] For FR 1, each CSI-RS resource set includes four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0114] For FR 2, each CSI-RS resource set includes two CSI-RS resources in one time slot, or four CSI-RS resources in two consecutive time slots, with two CSI-RS resources in each time slot;

[0115] All CSI-RS resources included in the same CSI-RS resource set are configured to have the same period and the same time offset;

[0116] Included in 2 k The CSI-RS resources in different CSI-RS resource sets are configured to have the same period P;

[0117] Included in 2 k The CSI-RS resources in different CSI-RS resource sets are respectively configured with time offsets Where X is a constant value;

[0118] The CSI triggering set is configured to set the CSI reporting settings to be included in 2 k 2 of the periodic CSI-RS resource settings k CSI-RS resource sets are linked;

[0119] Included in 2 k 2 of the periodic CSI-RS resource settings k CSI-RS resource sets shall be configured to be QCLed with the same SSB for Type C and Type D (if applicable);

[0120] The UE may assume that all CSI-RS resources associated with a CSI reporting setting are QCLed for Type A and Type D (if applicable).

[0121] Note that this approach applies to both the cases Y=1 and Y>1.

[0122] IV. Implementation 3: Quantization Scheme of Amplitude and Phase in TDCP Reports

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

[0124] The quantization range is from 0 to 1;

[0125] Quantization bit width is 3, 4 or 5;

[0126] The quantization bit width is a configurable high-level 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 of the channel correlation |c| is given by one of the following tables:

[0130] k |c| 0 <![CDATA[1-1 / 2 1 ]]> 1 <![CDATA[1-1 / 2 2 ]]> 2 <![CDATA[1-1 / 2 3 ]]> 3 <![CDATA[1-1 / 2 4 ]]> 4 <![CDATA[1-1 / 2 5 ]]> 5 <![CDATA[1-1 / 2 6 ]]> 6 <![CDATA[1-1 / 2 7 ]]> 7 <![CDATA[1-1 / 2 8 ]]>

[0131]

[0132]

[0133]

[0134]

[0135] If the quantization bit width is 4, the mapping between the amplitude indicator k and the amplitude of the channel correlation |c| is given by one of the following tables:

[0136]

[0137]

[0138]

[0139]

[0140]

[0141] If the quantization bit width is 5, the mapping between the amplitude indicator k and the amplitude of the channel correlation |c| is given by one of the following tables:

[0142]

[0143]

[0144]

[0145]

[0146]

[0147]

[0148]

[0149]

[0150] The UE quantizes the phase of the channel correlation according to one of the following methods:

[0151] The UE quantizes the phase of the channel correlation according to the higher-layer parameter "PhaseQuantizationBitwidth". The higher-layer parameter "PhaseQuantizationBitwidth" indicates the quantization bit width, which can be configured as 3 or 4;

[0152] The mapping between the phase indicator l and the phase ang(c) of the channel correlation is determined by the parameter "PhaseQuantizationMode", and the candidate values ​​of the parameter "PhaseQuantizationMode" are 0 or 1;

[0153] The UE determines the parameter "PhaseQuantizationMode" and reports it to the BS;

[0154] 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 given by one of the following tables:

[0155]

[0156]

[0157]

[0158]

[0159] 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 given by one of the following tables:

[0160]

[0161]

[0162]

[0163]

[0164] The UE quantizes the phase of the channel correlation according to the high-level parameter "PhaseQuantizationBitwidth" and the high-level parameter "QuantizationModeAdaption". The high-level parameter "PhaseQuantizationBitwidth" indicates the quantization bit width, which can be configured to 3 or 4. The high-level parameter "QuantizationModeAdaption" can be configured to "on" or "off".

[0165] If the higher layer parameter "QuantizationModeAdaption" is configured to "off", the mapping between the phase indicator l and the phase of the channel correlation is determined by the higher layer parameter "PhaseQuantizationBitwidth";

[0166] If the high-level parameter "PhaseQuantizationBitwidth" is configured to 3, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be given by the following table:

[0167] l ang(c) 0 0 1 π / 4 2 2π / 4 3 3π / 4 4 4π / 4 5 5π / 4 6 6π / 4 7 7π / 4

[0168] If the high-level parameter "PhaseQuantizationBitwidth" is configured to 4, the mapping between the phase indicator l and the phase ang(c) of the channel correlation can be given by the following table:

[0169]

[0170]

[0171] If the higher-layer parameter "QuantizationModeAdaption" is configured to "on", the mapping between the phase indicator l and the phase of the channel correlation is determined by the higher-layer parameters "PhaseQuantizationBitwidth" and "PhaseQuantizationMode". The candidate values ​​of the parameter "PhaseQuantizationMode" are 0 and 1.

[0172] The UE determines the parameter "PhaseQuantizationMode" and reports it to the BS;

[0173] 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 given by one of the following tables:

[0174]

[0175]

[0176]

[0177]

[0178] 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 given by one of the following tables:

[0179]

[0180]

[0181]

[0182]

[0183] The UE quantizes the phase of the channel correlation according to the high-level parameter "PhaseQuantizationBitwidth" and the high-level parameter "PhaseQuantizationMode". The high-level parameter "PhaseQuantizationBitwidth" indicates the quantization bit width, which can be configured as 3 or 4, and the high-level parameter "PhaseQuantizationMode" can be configured as 0 or 1.

[0184] The mapping between the phase indicator l and the phase of the channel correlation is determined by the high-level parameters "PhaseQuantizationBitwidth" and "PhaseQuantizationMode";

[0185] 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 given by one of the following tables:

[0186]

[0187]

[0188]

[0189] 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 given by one of the following tables:

[0190]

[0191]

[0192]

[0193]

[0194] The quantization range of the phase is determined by the amplitude of the channel correlation.

[0195] This disclosure document provides a method to solve the measurement and reporting issues of TDCP:

[0196] CSI-RS resources associated with TDCP reporting;

[0197] Quantitative plan,

[0198] Among them, one embodiment provides a flexible way to configure CSI-RS resources for measuring TDCP, and one embodiment provides a very efficient way to quantize the amplitude and phase of the channel correlation in the TDCP report.

[0199] Figure 3 is an exemplary flow chart for sending a TDCP report. Operation 302 includes: receiving, by a wireless device, a CSI report setting associated with one or more channel state information (CSI) resource settings, wherein each of the one or more CSI resource settings includes a CSI reference signal (CSI-RS) resource set, and wherein the one CSI-RS resource set includes one or more CSI-RS resources. Operation 304 includes: receiving, by a wireless device, a CSI trigger state list. Operation 306 includes: determining, by a wireless device, a time domain channel characteristic (TDCP) based on the CSI report setting and the CSI trigger state list. Operation 308 includes: sending, by a wireless device, a TDCP report. In some embodiments, the method may be implemented according to embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on better system performance than the legacy protocol.

[0200] In some embodiments, a CSI report setting is associated with an aperiodic CSI resource setting, wherein the aperiodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state, and the trigger state is configured to link the CSI report setting with the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0201] In some embodiments, a CSI report setting is associated with two aperiodic CSI resource settings, wherein the two aperiodic CSI resource settings include two CSI-RS resource sets, wherein each aperiodic CSI resource setting includes 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 to have different trigger time offsets. In some embodiments, the CSI trigger state list includes a trigger set, which is configured to link the CSI report setting with 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, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0202] In some embodiments, a CSI report setting is associated with an aperiodic CSI resource setting and a periodic CSI resource setting, wherein the aperiodic CSI resource setting includes a first CSI-RS resource set, and wherein the periodic CSI resource setting 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 setting and the CSI-RS associated with the periodic CSI resource setting will not be sent or received in overlapping time slots. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI report setting with 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) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, the first CSI-RS resource set is configured to be quasi-co-located (QCL-ed) with the second CSI-RS resource set for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI reporting configuration are quasi-co-located (QCL-ed) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0203] In some embodiments, a CSI report setting is associated with a periodic CSI resource setting, wherein the periodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state, and the trigger state is configured to link the CSI report setting with the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0204] In some embodiments, a CSI report setting is associated with a first periodic CSI resource setting and a second periodic CSI resource setting, wherein the first periodic CSI resource setting includes a first CSI-RS resource set, and wherein the second periodic CSI resource setting includes a second CSI-RS resource set. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured to have a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured to have a second periodicity, wherein 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 to have a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured to have a second periodicity, wherein 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 to have different triggering time offsets. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set will not be sent or received in overlapping time slots. In some embodiments, the CSI trigger state list includes a trigger set, and the trigger set is configured to link the CSI report setting with 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 the same synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0205] In some embodiments, a CSI report setting includes multiple periodic CSI resource settings, wherein the multiple periodic CSI resource settings include multiple CSI-RS resource sets, wherein each periodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured to have the same period. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured to have a time offset list, wherein the time offset list is based on at least one of a period, a predefined value, and a number of multiple periodic CSI resource settings. In some embodiments, the CSI trigger state list includes a trigger set, which is configured to link the CSI report setting with the multiple CSI-RS resource sets. In some embodiments, the multiple CSI-RS resource sets are configured to be quasi-co-located (QCLed) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some implementations, all CSI-RS resources associated with a CSI reporting setup are quasi-co-located (QCL-ed) with respect to at least one of: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0206] Figure 4 4 is an exemplary flow chart for transmitting an amplitude indicator. Operation 402 includes receiving, by a wireless device, a high-layer parameter 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 based on the amplitude of the channel correlation and the quantization bit width, the amplitude indicator indicating a quantized amplitude. Operation 408 includes transmitting, by the wireless device, the amplitude indicator. In some embodiments, the method may be implemented according to Embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on improved system performance compared to legacy protocols.

[0207] In some embodiments, the quantized amplitude ranges from 0 to 1. In some embodiments, the quantization 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 quantization 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 associated with at least one of the following: one divided by 2 k 1 divided by 2 k The square root of one divided by two kThe fourth root of 1 divided by 2 k The eighth root of 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 associated with at least one of the following: one divided by 2 k The square root of one divided by two k The fourth root of k, and the power of k / 16. In some embodiments, when the quantization bit width is 3, the amplitude indicator and the amplitude of the channel correlation have a first mapping relationship, and when the quantization bit width is 4, the amplitude indicator and the amplitude of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0208] Figure 5 This is an exemplary flow chart for sending a phase indicator. Operation 502 includes: receiving, by a wireless device, higher-layer signaling, the 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 channel correlation. Operation 506 includes: determining, by the wireless device, based on the phase of the channel correlation and the higher-layer signaling, at least one of: a phase indicator indicating a quantized phase of the channel correlation, and a phase quantization mode parameter. Operation 508 includes: sending, by the wireless device, at least one of the phase indicator and the phase quantization mode parameter. In some embodiments, the method may be implemented according to embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on better system performance than legacy protocols.

[0209] In some embodiments, the range of the quantized phase is from 0 to 2π. In some embodiments, the range of the quantized 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 quantized 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, when the quantization bit width is 3, the phase indicator and the phase of the channel correlation have a first mapping relationship, and when the quantization bit width is 4, the phase indicator and the phase of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0210] In some embodiments, the method further includes determining, by a 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, which indicates 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, which indicates 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, and 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 associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2 l The square root of , 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 associated with at least one of the following: 2π, one divided by 2 l In some embodiments, when the value of the phase quantization mode parameter is 0 and the quantization bit width is 3, the phase indicator and the phase of the channel correlation have a first mapping relationship, and when the value of the phase quantization mode parameter is 0 and the quantization bit width is 4, the phase indicator and the phase of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0211] In some embodiments, the high-layer signaling includes a phase quantization bit width, wherein 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 a phase quantization mode parameter. In some embodiments, the high-layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "on", and wherein 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 high-layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "off", and wherein 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 associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2l The square root of, l / 7, l / 8, l / 15, and l / 16.

[0212] Figure 6 is another exemplary flow chart for transmitting a phase indicator. Operation 602 includes receiving, by a wireless device, higher-layer signaling, the 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 a channel correlation. Operation 606 includes determining, by the wireless device, a phase indicator based on the phase of the channel correlation and the higher-layer signaling, the phase indicator indicating a quantized phase of the channel correlation. Operation 608 includes transmitting, by the wireless device, the phase indicator. In some embodiments, the method may be implemented according to Embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on improved system performance compared to legacy protocols.

[0213] In some embodiments, the mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of a phase quantization bit width and a phase quantization mode parameter. In some embodiments, the mapping relationship between the phase indicator l and the quantized phase of the channel correlation is associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2 l The square root of, l / 7, l / 8, l / 15, and l / 16.

[0214] Figure 7 is an exemplary flow chart for receiving a TDCP report. Operation 702 includes: sending, by a network device, a CSI report setting associated with one or more channel state information (CSI) resource settings, wherein each of the one or more CSI resource settings includes a CSI reference signal (CSI-RS) resource set, and wherein the one CSI-RS resource set includes one or more CSI-RS resources. Operation 704 includes: sending, by a network device, a CSI trigger state list. Operation 706 includes: receiving, by a network device, a time domain channel characteristic (TDCP) report based on the CSI report setting and the CSI trigger state list. In some embodiments, the method may be implemented according to embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on better system performance than the legacy protocol.

[0215] In some embodiments, a CSI report setting is associated with an aperiodic CSI resource setting, wherein the aperiodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state, and the trigger state is configured to link the CSI report setting with the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0216] In some embodiments, a CSI report setting is associated with two aperiodic CSI resource settings, wherein the two aperiodic CSI resource settings include two CSI-RS resource sets, wherein each aperiodic CSI resource setting includes 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 to have different trigger time offsets. In some embodiments, the CSI trigger state list includes a trigger set, which is configured to link the CSI report setting with 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, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0217] In some embodiments, a CSI report setting is associated with an aperiodic CSI resource setting and a periodic CSI resource setting, wherein the aperiodic CSI resource setting includes a first CSI-RS resource set, and wherein the periodic CSI resource setting 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 setting and the CSI-RS associated with the periodic CSI resource setting will not be sent or received in overlapping time slots. In some embodiments, the CSI trigger state list includes a trigger set configured to link the CSI report setting with 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) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, the first CSI-RS resource set is configured to be quasi-co-located (QCL-ed) with the second CSI-RS resource set for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI reporting configuration are quasi-co-located (QCL-ed) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0218] In some embodiments, a CSI report setting is associated with a periodic CSI resource setting, wherein the periodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI trigger state list includes a trigger state, and the trigger state is configured to link the CSI report setting with the CSI-RS resource set. In some embodiments, the CSI-RS resource set is configured to be quasi-co-located (QCL) with a synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0219] In some embodiments, a CSI report setting is associated with a first periodic CSI resource setting and a second periodic CSI resource setting, wherein the first periodic CSI resource setting includes a first CSI-RS resource set, and wherein the second periodic CSI resource setting includes a second CSI-RS resource set. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set are configured to have a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured to have a second periodicity, wherein 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 to have a first periodicity, and the CSI-RS resources included in the second CSI-RS resource set are configured to have a second periodicity, wherein 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 to have different triggering time offsets. In some embodiments, the CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set will not be sent or received in overlapping time slots. In some embodiments, the CSI trigger state list includes a trigger set, and the trigger set is configured to link the CSI report setting with 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 the same synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some embodiments, all CSI-RS resources associated with the CSI report setting are quasi-co-located (QCL) for at least one of the following: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0220] In some embodiments, a CSI report setting includes multiple periodic CSI resource settings, wherein the multiple periodic CSI resource settings include multiple CSI-RS resource sets, wherein each periodic CSI resource setting includes a CSI-RS resource set. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured to have the same period. In some embodiments, the CSI-RS resources included in the multiple CSI-RS resource sets are configured to have a time offset list, wherein the time offset list is based on at least one of a period, a predefined value, and a number of multiple periodic CSI resource settings. In some embodiments, the CSI trigger state list includes a trigger set, which is configured to link the CSI report setting with the multiple CSI-RS resource sets. In some embodiments, the multiple CSI-RS resource sets are configured to be quasi-co-located (QCLed) with the same synchronization signal block (SSB) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters. In some implementations, all CSI-RS resources associated with a CSI reporting setup are quasi-co-located (QCL-ed) with respect to at least one of: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

[0221] Figure 8 8 is an exemplary flow chart for receiving an amplitude indicator. Operation 802 includes: transmitting, via a network device, a high-layer parameter indicating a quantization bit width. Operation 804 includes: transmitting, via the network device, an amplitude of a channel correlation. Operation 806 includes: receiving, via the network device, an amplitude indicator indicating a quantized amplitude, wherein the amplitude indicator is based on the amplitude of the channel correlation and the quantization bit width. In some embodiments, the method may be implemented according to Embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on improved system performance compared to legacy protocols.

[0222] In some embodiments, the quantized amplitude ranges from 0 to 1. In some embodiments, the quantization 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 quantization 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 associated with at least one of the following: one divided by two k 1 divided by 2 k The square root of one divided by two k The fourth root of 1 divided by 2 kThe eighth root of 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 associated with at least one of the following: one divided by 2 k The square root of one divided by two k The fourth root of k, and the power of k / 16. In some embodiments, when the quantization bit width is 3, the amplitude indicator and the amplitude of the channel correlation have a first mapping relationship, and when the quantization bit width is 4, the amplitude indicator and the amplitude of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0223] Figure 9 is an exemplary flow chart for receiving a phase indicator. Operation 902 includes: transmitting, via a network device, higher-layer signaling, the higher-layer signaling including at least one of a phase quantization bit width and a quantization mode adaptation parameter. Operation 904 includes: transmitting, via the network device, a phase of a channel correlation. Operation 906 includes: receiving, via the network device, at least one of: a phase indicator indicating a quantized phase of the channel correlation, and a phase quantization mode parameter, wherein the phase indicator is based on the phase of the channel correlation and the higher-layer signaling. In some embodiments, the method may be implemented according to Embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on improved system performance compared to legacy protocols.

[0224] In some embodiments, the range of the quantized phase is from 0 to 2π. In some embodiments, the range of the quantized 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 quantized 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, when the quantization bit width is 3, the phase indicator and the phase of the channel correlation have a first mapping relationship, and when the quantization bit width is 4, the phase indicator and the phase of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0225] In some embodiments, the method further includes receiving a value of a phase quantization mode parameter through a network device. 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, which indicates 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, which indicates 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, and the quantization bit width is 3, and the phase indicator 1 and the quantized 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 associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2 l The square root of , 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 associated with at least one of the following: 2π, one divided by 2 l In some embodiments, when the value of the phase quantization mode parameter is 0 and the quantization bit width is 3, the phase indicator and the phase of the channel correlation have a first mapping relationship, and when the value of the phase quantization mode parameter is 0 and the quantization bit width is 4, the phase indicator and the phase of the channel correlation have a second mapping relationship, wherein the first mapping relationship and the second mapping relationship are different.

[0226] In some embodiments, the high-layer signaling includes a phase quantization bit width, wherein 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 a phase quantization mode parameter. In some embodiments, the high-layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "on", and wherein 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 high-layer signaling includes a phase quantization bit width and a quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "off", and wherein 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 associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2l The square root of, l / 7, l / 8, l / 15, and l / 16.

[0227] Figure 10 This is another exemplary flow chart for receiving a phase indicator. Operation 1002 includes: transmitting, via a network device, higher-layer signaling, the higher-layer signaling including at least one of a phase quantization bit width and a phase quantization mode parameter. Operation 1004 includes: transmitting, via the network device, a phase of a channel correlation. Operation 1006 includes: receiving, via the network device, a phase indicator indicating a quantized phase of the channel correlation, wherein the phase indicator is based on the phase of the channel correlation and the higher-layer signaling. In some embodiments, the method may be implemented according to Embodiments 1 to 3. In some embodiments, performing other steps of the method may be based on improved system performance compared to legacy protocols.

[0228] In some embodiments, the mapping between the phase indicator and the quantized phase of the channel correlation is determined by at least one of a phase quantization bit width and a phase quantization mode parameter. In some embodiments, the mapping relationship between the phase indicator l and the quantized phase of the channel correlation is associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2 l The square root of, l / 7, l / 8, l / 15, and l / 16.

[0229] Figure 11 An exemplary 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., a user equipment (UE)) is shown. The hardware platform 1100 includes at least one processor 1110 and a memory 1105 having instructions stored thereon. The instructions, when executed by the processor 1110, configure the hardware platform 1100 to execute Figures 1 to 10 The operations described in the various embodiments described in this disclosure document are as follows. 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. 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 network device as described in this document may be implemented using hardware platform 1100.

[0230] The implementation discussed above will be applied to wireless communications. Figure 12An example of a wireless communication system (e.g., a 5G or NR cellular network) is shown that includes a base station 1220 and one or more user equipment (UEs) 1211, 1212, and 1213. In some embodiments, the UE accesses the base station (e.g., the network) using a communication link to the network (sometimes referred to as an uplink direction, as depicted by dashed arrows 1231, 1232, 1233), which then enables subsequent communication from the base station to the UE (e.g., shown in the direction from the network to the UE, sometimes referred to as a downlink direction, as depicted by arrows 1241, 1242, 1243). In some embodiments, the base station sends information to the UE (sometimes referred to as a downlink direction, as depicted by arrows 1241, 1242, 1243), which then enables subsequent communication from the UE to the base station (e.g., shown in the direction from the UE to the base station, sometimes referred to as an uplink direction, as depicted by dashed arrows 1231, 1232, 1233). The UE may be, for example, a smartphone, a tablet device, a mobile computer, a machine-to-machine (M2M) device, an Internet of Things (IoT) device, etc. The UE described in this document may be communicatively coupled to a Figure 12 12. The UE may also communicate with the BS for CSI transmission.

[0231] Those skilled in the art will appreciate that this document discloses a method for determining a more accurate precoding matrix (especially when different frequency locations correspond to different precoding matrices) without increasing the overhead of the UE reporting the precoding matrix (or the base station notifying the precoding matrix). Due to the more accurate precoding matrix, more accurate channel state information can be obtained, thereby improving spectral efficiency.

[0232] Some of the embodiments described herein are described in the general context of methods or processes, which can be implemented in one embodiment by a computer program product embodied in a computer-readable medium, which includes computer-executable instructions, such as program code, executed by a computer 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 (CD), digital versatile discs (DVD), etc. Therefore, computer-readable media may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc. that perform specific tasks or implement specific abstract data types. Computer-executable instructions or processor-executable instructions, associated data structures, and program modules represent examples of program codes for executing the steps of the methods disclosed herein. A specific sequence of such executable instructions or associated data structures represents an example of corresponding actions for implementing the functions described in such steps or processes.

[0233] 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 can include, for example, discrete analog and / or digital components integrated as part of a printed circuit board. Alternatively or in addition, the disclosed components or modules can be implemented as application specific integrated circuits (ASICs) and / or field programmable gate arrays (FPGAs). Some implementations can additionally or alternatively include a digital signal processor (DSP), which is a dedicated microprocessor with an architecture optimized for the operational requirements of digital signal processing associated with the functions disclosed herein. Similarly, the various components or subcomponents within each module can be implemented in software, hardware, or firmware. The connection between the modules and / or the components within the modules can be implemented using any of the connection methods and media known in the art, including but not limited to communication via the Internet, a wired network, or a wireless network using appropriate protocols.

[0234] Although this document contains many details, these details should not be interpreted as limitations on the scope of the claimed invention or the scope of what may be claimed, but rather as descriptions of features specific to a particular embodiment. Certain features described in this document in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any appropriate sub-combination. Furthermore, although features may be described above as working in certain combinations and even initially claimed as such, in some cases one or more features in the combination may be deleted from the claimed combination, and the claimed combination may involve variations of sub-combinations or sub-combinations. Similarly, although operations are depicted in a particular order in the accompanying drawings, this should not be understood as requiring that such operations be performed in the particular order shown or in a continuous order, or that all illustrated operations be performed, in order to achieve the desired result.

[0235] Only a few implementations and examples are described, and other implementations, enhancements, and variations can be made based on what is described and illustrated in this disclosure.

Claims

1. A method of wireless communication, comprising: The wireless device receives a CSI reporting setting associated with one or more channel state information (CSI) resource settings, wherein each of the one or more CSI resource settings includes a CSI reference signal (CSI-RS) resource set, and wherein the one CSI-RS resource set includes one or more CSI-RS resources; The wireless device receives a CSI trigger status list; The wireless device determines a time domain channel characteristic TDCP based on the CSI report configuration and the CSI triggering status list; and The wireless device sends a TDCP report.

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

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

4. The method according to claim 2 or 3, wherein: The two CSI-RS resource sets are configured to have different triggering time offsets.

5. The method according to any one of claims 2 to 4, wherein The CSI triggering state list includes a triggering set configured to link the CSI report setting with the two CSI-RS resource sets.

6. The method according to any one of claims 2 to 5, wherein 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 frequency shift, average delay, and spatial Rx parameter.

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

8. The method according to 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 according to claim 7 or 8, wherein The CSI-RS associated with the aperiodic CSI resource setting and the CSI-RS associated with the periodic CSI resource setting are not transmitted or received in overlapping time slots.

10. The method according to any one of claims 7 to 9, wherein The CSI triggering state list includes a triggering set configured to link the CSI report setting with the first CSI-RS resource set and the second CSI-RS resource set.

11. The method according to any one of claims 7 to 10, wherein The second CSI-RS resource set is configured to be quasi co-located with a synchronization signal block (SSB) (QCL) for at least one of the following: Doppler shift, average delay, and spatial Rx parameters.

12. The method according to any one of claims 7 to 10, wherein The first CSI-RS resource set is configured to be quasi co-located (QCL) with the second CSI-RS resource set for at least one of: Doppler shift, Doppler spread, average delay, delay spread, and spatial Rx parameters.

13. The method according to claim 1, wherein The CSI reporting setting is associated with a first periodic CSI resource setting and a second periodic CSI resource setting, wherein the first periodic CSI resource setting includes a first CSI-RS resource set, and wherein the second periodic CSI resource setting includes a second CSI-RS resource set.

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

15. The method according to claim 13 or 14, wherein: The CSI-RS resources included in the first CSI-RS resource set and the second CSI-RS resource set are configured to have a time offset list, and wherein the time offset list is based on at least one of the following: a period of the CSI-RS resources included in the first CSI-RS resource set, a predefined value, and a number of periodic CSI resource settings.

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 time slots.

17. The method according to any one of claims 13 to 16, wherein The CSI triggering state list includes a triggering set configured to link the CSI report setting with the first CSI-RS resource set and the second CSI-RS resource set.

18. The method according to any one of claims 13 to 17, wherein The first CSI-RS resource set and the second CSI-RS resource set are configured to be quasi co-located with the same synchronization signal block SSB QCL for at least one of the following: Doppler frequency shift, average delay, and spatial Rx parameters.

19. A method of wireless communication, comprising: The wireless device receives a high-layer parameter indicating a quantization bit width; The wireless device determines a magnitude of a channel correlation; The wireless device determines a magnitude indicator based on the magnitude of the channel correlation and the quantization bit width, the magnitude indicator indicating a quantized magnitude of the channel correlation; and The wireless device transmits the amplitude indicator.

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

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

22. The method according to any one of claims 19 to 21, wherein The mapping relationship between the magnitude indicator k and the quantized magnitude of the channel correlation is associated with at least one of the following: - divided by 2 k 1 divided by 2 k The square root of one divided by two k The fourth root of 1 divided by 2 k The eighth root of , k / 8, k / 16, k / 32.

23. A method of wireless communication, comprising: The wireless device receives a higher layer signaling, wherein the higher layer signaling includes at least one of a phase quantization bit width and a quantization mode adaptation parameter; The wireless device determines a phase of a channel correlation; The wireless device determines, based on the phase of the channel correlation and the higher layer signaling, at least one of: a phase indicator indicating a quantized phase of the channel correlation, and a phase quantization mode parameter; and The wireless device transmits at least one of the phase indicator and the phase quantization mode parameter.

24. The method according to claim 23, wherein The higher layer signaling includes the phase quantization bit width, and wherein 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.

25. The method according to claim 23, wherein The high-layer signaling includes the phase quantization bit width and the quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "on", and wherein the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width and the phase quantization mode parameter.

26. The method according to claim 23, wherein The high-layer signaling includes the phase quantization bit width and the quantization mode adaptation parameter, wherein the quantization mode adaptation parameter is set to "off", and wherein the mapping between the phase indicator and the quantized phase of the channel correlation is determined by the phase quantization bit width.

27. A method of wireless communication, comprising: The wireless device receives a higher layer signaling, wherein the higher layer signaling includes at least one of a phase quantization bit width and a phase quantization mode parameter; The wireless device determines a phase of a channel correlation; The wireless device determines a phase indicator based on the phase of the channel correlation and the higher layer signaling, the phase indicator indicating a quantized phase of the channel correlation; and The wireless device sends the phase indicator.

28. The method according to claim 27, wherein 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.

29. The method according to claim 27, wherein The mapping relationship between the phase indicator l and the quantized phase of the channel correlation is associated with at least one of the following: 2π, one divided by 2 l 1 divided by 2 l The square root of, l / 7, l / 8, l / 15, l / 16.

30. A method of wireless communication, comprising: The network device sends a CSI report setting associated with one or more channel state information (CSI) resource settings, wherein each of the one or more CSI resource settings includes a CSI reference signal (CSI-RS) resource set, and wherein the one CSI-RS resource set includes one or more CSI-RS resources; The network device sends a CSI trigger status list; and The network device receives a time domain channel characteristic TDCP report based on the CSI report setting and the CSI triggering status list.

31. A method of wireless communication, comprising: The network device sends a high-level parameter indicating a quantization bit width; The network device sends a magnitude of a channel correlation; as well as The network device receives a magnitude indicator indicating a quantized magnitude of a channel correlation, wherein the magnitude indicator is based on the magnitude of the channel correlation and the quantization bit width.

32. A method of wireless communication, comprising: The network device sends a high-layer signaling, wherein the high-layer signaling includes at least one of a phase quantization bit width and a quantization mode adaptation parameter; The network device sends a phase of the channel correlation; as well as The network device receives at least one of: a phase indicator indicating a quantized phase of a channel correlation and a phase quantization mode parameter, wherein the phase indicator is based on the phase of the channel correlation and the higher layer signaling.

33. A method of wireless communication, comprising: The network device sends a high-layer signaling, wherein the high-layer signaling includes at least one of a phase quantization bit width and a phase quantization mode parameter; The network device sends a phase of the channel correlation; as well as The network device receives a phase indicator indicating a quantized phase of a channel correlation, wherein the phase indicator is based on the phase of the channel correlation and the higher layer signaling.

34. A device for wireless communication, comprising a processor, wherein: The processor is configured to implement the method recited in any one of claims 1 to 33.

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

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