WO2025171660A1

WO2025171660A1 - Devices and methods for communication

Info

Publication number: WO2025171660A1
Application number: PCT/CN2024/077445
Authority: WO
Inventors: Yukai GAO; Peng Guan; Gang Wang
Original assignee: NEC Corp
Current assignee: NEC Corp
Priority date: 2024-02-18
Filing date: 2024-02-18
Publication date: 2025-08-21
Anticipated expiration: 2026-08-18

Abstract

Embodiments of the present disclosure provide a solution for channel state information. In a solution, a terminal device receives, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources; and transmits, to the network device, the measurement report based on the at least one configuration.

Description

DEVICES AND METHODS FOR COMMUNICATION

FIELDS

Example embodiments of the present disclosure generally relate to the field of communication techniques and in particular, to devices and methods for channel state information.

BACKGROUND

Several technologies have been proposed to improve communication performances. For example, multi-input multi-output (MIMO) has been proposed. MIMO includes features that facilitate utilization of a large number of antenna elements at base station for both sub-6GHz and over-6GHz frequency bands. Enhancement for channel state information (CSI) reporting needs to be further studied.

SUMMARY

In general, embodiments of the present disclosure provide a solution on CSI reporting.

In a first aspect, there is provided a terminal device, comprising: a processor, configured to cause the terminal device to: receive, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter or a fifth granularity, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter or a sixth granularity, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and transmit, to the network device, the measurement report based on the at least one configuration.

In a second aspect, there is provided a network device, comprising: a processor, configured to cause the network device to: transmit, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter or a fifth granularity, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter or a sixth granularity, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and receive, from the terminal device, the measurement report based on the at least one configuration.

In a third aspect, there is provided a communication method performed by a terminal device. The method comprises: receiving, at a terminal device and from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter or a fifth granularity, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter or a sixth granularity, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and transmitting, to the network device, the measurement report based on the at least one configuration.

In a fourth aspect, there is provided a communication method performed by a network device. The method comprises: transmitting, at a network device and to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter or a fifth granularity, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter or a sixth granularity, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and receiving, from the terminal device, the measurement report based on the at least one configuration.

In a fifth aspect, there is provided a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to carry out the method according to the third, or fourth aspect.

Other features of the present disclosure will become easily comprehensible through the following description.

BRIEF DESCRIPTION OF THE DRAWINGS

Through the more detailed description of some example embodiments of the present disclosure in the accompanying drawings, the above and other objects, features and advantages of the present disclosure will become more apparent, wherein:

FIG. 1 illustrates an example communication environment in which example embodiments of the present disclosure can be implemented;

FIG. 2 illustrates a signaling flow of CSI reporting in accordance with some embodiments of the present disclosure;

FIG. 3A and FIG. 3B illustrate schematic diagrams of time intervals in accordance with some embodiments of the present disclosure, respectively;

FIG. 4A and FIG. 4B illustrates schematic diagrams of first granularity and second granularity in accordance with some embodiments of the present disclosure, respectively;

FIG. 5 illustrates a flowchart of a method implemented at a terminal device, according to some example embodiments of the present disclosure;

FIG. 6 illustrates a flowchart of a method implemented at a network device, according to some example embodiments of the present disclosure; and

FIG. 7 illustrates a simplified block diagram of an apparatus that is suitable for implementing example embodiments of the present disclosure.

Throughout the drawings, the same or similar reference numerals represent the same or similar element.

DETAILED DESCRIPTION

Principle of the present disclosure will now be described with reference to some example embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. Embodiments described herein can be implemented in various manners other than the ones described below.

In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.

As used herein, the term ‘terminal device’ refers to any device having wireless or wired communication capabilities. Examples of the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, devices on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eXtended Reality (XR) devices including different types of realities such as Augmented Reality (AR) , Mixed Reality (MR) and Virtual Reality (VR) , the unmanned aerial vehicle (UAV) commonly known as a drone which is an aircraft without any human pilot, devices on high speed train (HST) , or image capture devices such as digital cameras, sensors, gaming devices, music storage and playback appliances, or Internet appliances enabling wireless or wired Internet access and browsing and the like. The ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporate one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM. The term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.

The term “network device” refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate. Examples of a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , and the like.

The terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.

The terminal or the network device may work on several frequency ranges, e.g., FR1 (e.g., 450 MHz to 6000 MHz) , FR2 (e.g., 24.25GHz to 52.6GHz) , frequency band larger than 100 GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum. The terminal device may have more than one connection with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario. The terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.

The embodiments of the present disclosure may be performed in test equipment, e.g., signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator. In some embodiments, the terminal device may be connected with a first network device and a second network device. One of the first network device and the second network device may be a master node and the other one may be a secondary node. The first network device and the second network device may use different radio access technologies (RATs) . In some embodiments, the first network device may be a first RAT device and the second network device may be a second RAT device. In some embodiments, the first RAT device is eNB and the second RAT device is gNB. Information related with different RATs may be transmitted to the terminal device from at least one of the first network device or the second network device. In some embodiments, first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device. In some embodiments, information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device. Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.

As used herein, the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise. The term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’ The term ‘based on’ is to be read as ‘at least in part based on. ’ The term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’ The term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’ The terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.

In some examples, values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.

As used herein, the term “resource, ” “transmission resource, ” “uplink resource, ” or “downlink resource” may refer to any resource for performing a communication, such as a resource in time domain, a resource in frequency domain, a resource in space domain, a resource in code domain, or any other resource enabling a communication, and the like. In the following, unless explicitly stated, a resource in both frequency domain and time domain will be used as an example of a transmission resource for describing some example embodiments of the present disclosure. It is noted that example embodiments of the present disclosure are equally applicable to other resources in other domains.

In the context of the present application, the terms “transmission occasions” , “reception occasions” , “repetitions” , “transmission” , “reception” , “PDSCH transmission occasions” , “PDSCH repetitions” , “PUSCH transmission occasions” , “PUSCH repetitions” , “PUCCH occasions” , “PUCCH repetitions” , “repeated transmissions” , “repeated receptions” , “PDSCH transmissions” , “PDSCH receptions” , “PUSCH transmissions” , “PUSCH receptions” , “PUCCH transmissions” , “PUCCH receptions” , “RS transmission” , “RS reception” , “communication” , “transmissions” and “receptions” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “TCI state” , “set of QCL parameter (s) ” , “QCL parameter (s) ” , “QCL assumption” and “QCL configuration” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “TCI field” , “TCI state field” , and “transmission configuration indicator” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “DCI” and “DCI format” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In some embodiments, the embodiments in this disclosure can be applied to PDSCH and PUSCH scheduling, and in the following, PDSCH scheduling is described as examples. For example, the embodiments in this disclosure can be applied to PUSCH by replacing “transmit” to “receive” and/or “receive” to “transmit” . The terms “PDSCH” and “PUSCH” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “transmit” and “receive” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “precoding matrix” , “precoding” , “beam” , “beamforming” and “precoder” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “antenna” and “antenna port” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “transmission” , “transmitting” , “Tx” and “TX” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “signaling” , “message” , “configuration” , “request” , “response” , “information” and “signal” , “packet” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “node” , “device” , “apparatus” “function” and “function entity” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “chain” , “Tx chain” , “transmission chain” , “transmit chain” , “transmitting chain” , “Tx” , “transmission” , “transmitting” , “transmit” , “antenna port” , “port” and “antenna” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “precoder” , “precoding” , “precoding matrix” , “beam” , “beamforming” , “vector” , “basis” , “spatial-related vector” , “spatial-related basis” , “spatial-related basis vector” , “codebook” , “UL codebook” , “spatial domain vector” , “spatial domain-related information” , “SD-related information” , “spatial relation information” , “spatial relation info” , “spatial filter” , “transmission spatial filter” , “transmitting spatial filter” , “Tx spatial filter” , “uplink spatial filter” , “spatial domain filter” , “transmission filter” , “precoding information” , “precoding information and number of layers” , “precoding matrix indicator (PMI) ” , “precoding matrix indicator” , “transmission precoding matrix indicator” , “precoding matrix indication” , “transmission configuration indicator state (TCI state) ” , “DL TCI state” , “UL TCI state” , “joint TCI state” , “transmission configuration indicator” , “quasi co-location (QCL) ” , “quasi-co-location” , “QCL parameter” , “QCL assumption” , “QCL relationship” and “spatial relation” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “transmission and reception point (TRP) ” , “TCI” , “panel” , “SRS resource set” , “antenna port group” , “TCI state” , “control-resource set, CORESET” , “CORESET pool” , “uplink TCI state” , “downlink TCI state” , “joint TCI state” , “separate TCI state” , “panel” , “SRS resource set” , “antenna port group” and other similar expressions are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “vector” , “vectors” , “bases” and “basis” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “uplink RS” , “sounding reference signal” and “SRS” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “index” , “indicator” , “indication” , “field” , “bit field” and “bitmap” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “element of indication field” , “parameter” and “indication” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “associated with” , “corresponding to” , “correspond to” and “comprise” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

Principles and implementations of the present disclosure will be described in detail below with reference to the figures.

FIG. 1 illustrates a schematic diagram of an example communication network 100 in which some embodiments of the present disclosure can be implemented. As shown in FIG. 1, the communication network 100 may include a terminal device 110 and a network device 120. The network device 120 may provide a cell 102 to serve one or more terminal devices. In this example, the terminal device 110 is located in the cell 102 and is served by the network device 120. In the example of FIG. 1, the terminal device 110 may be a UE and the network device 120 may be a base station serving the UE. The serving area of the network device 120 may be called a cell 102.

For example, the network device 120 may be configured with or associated with at least one of four TRPs/panels 130-1, 130-2, 130-3 and 130-4 (collectively referred to as TRPs 130 or individually referred to as TRP 130) . It is to be understood that the number of network devices, terminal devices and TRPs as shown in FIG. 1 is only for the purpose of illustration without suggesting any limitations to the present disclosure. The network 100 may include any suitable number of devices adapted for implementing embodiments of the present disclosure. Although not shown, it would be appreciated that one or more additional devices may be located in the cell 102, and one or more additional cells may be deployed in the communication environment 100. It is noted that although illustrated as a network device, the network device 120 may be another device than a network device. Although illustrated as a terminal device, the terminal device 110 may be other device than a terminal device. The term “TRP” refers to an antenna array (with one or more antenna elements) available to the network device located at a specific geographical location. For example, a network device may be coupled with multiple TRPs in different geographical locations to achieve better coverage. For another example, a network device may be implemented with multiple panels or multiple groups of antenna ports/elements in same geographical location. It is to be understood that the TRP can also be referred to as a “panel” , which also refers to an antenna array (with one or more antenna elements) or a group of antennas.

In the following, for the purpose of illustration, some example embodiments are described with the terminal device 110 operating as a UE and the network device 120 operating as a base station. However, in some example embodiments, operations described in connection with a terminal device may be implemented at a network device or other device, and operations described in connection with a network device may be implemented at a terminal device or other device.

In some example embodiments, if the terminal device 110 is a terminal device and the network device 120 is a network device, a link from the network device 120 to the terminal device 110 is referred to as a downlink (DL) , while a link from the terminal device 110 to the network device 120 is referred to as an uplink (UL) . In DL, the network device 120 is a transmitting (TX) device (or a transmitter) and the terminal device 110 is a receiving (RX) device (or a receiver) . In UL, the terminal device 110 is a TX device (or a transmitter) and the network device 120 is a RX device (or a receiver) . In some embodiments, the terminal device 110 and the network device 120 may communicate with each other via a channel such as a wireless communication channel on an air interface (e.g., Uu interface) . The wireless communication channel may comprise at least one of: a physical uplink control channel (PUCCH) , a physical uplink shared channel (PUSCH) , a physical random-access channel (PRACH) , a physical downlink control channel (PDCCH) , a physical downlink shared channel (PDSCH) and a physical broadcast channel (PBCH) . Of course, any other suitable channels are also feasible.

The communications in the communication network 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like. The embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.

As shown in FIG. 1, the network device 120 may communicate with the terminal device 110 via at least one of the TRPs/panels 130-1, 130-2, 130-3 and 130-4. In the following text, the TRP/panel 130-1 may be also referred to as the first TRP/panel, the TRP/panel 130-2 may be also referred to as the second TRP/panel, the TRP/panel 130-3 may be also referred to as the third TRP/panel and the TRP/panel 130-4 may be also referred to as the fourth TRP/panel. For example, each of the TRPs/panels 130 may provide a plurality of beams or may transmit a plurality of reference signal resources (e.g. CSI-RS resources) for communication with the terminal device 110. It is noted that the number of TRPs/panels shown in FIG. 1 is only an example not limitation.

In some embodiments, the first TRP/panel and/or the second TRP/panel and/or the third TRP/panel and/or the fourth TRP/panel may be explicitly associated with different higher-layer configured identities. For example, a higher-layer configured identity can be associated with a Control Resource Set (CORESET) , a reference signal (RS) , a reference signal resource, a group of ports of a reference signal resource or a Transmission Configuration Indication (TCI) state, which is used to differentiate between transmissions between different TRPs/panels 130 and the terminal device 110.

In some embodiments, before transmitting data (such as, via the TRP/panel 130- 1 and/or 130-2 and/or 130-3 and/or 130-4) to the terminal device 110, the network device 120 may transmit control information associated with the transmission of the data. For example, the control information can schedule a set of resources for the transmission of the data and indicate various transmission parameters related to the transmission of the data, such as, one or more TCI states, a Frequency Domain Resource Assignment (FDRA) , a Time Domain Resource Assignment (TDRA) which may include a slot offset and a start/length indicator value, a Demodulation Reference Signal (DMRS) group, a Redundancy Version (RV) , as defined in the 3GPP specifications. It is to be understood that the transmission parameters indicated in the control information are not limited to the ones as listed above. Embodiments of the present disclosure may equally applicable to control information including any transmission parameters.

The communications in the communication environment 100 may conform to any suitable standards including, but not limited to, Global System for Mobile Communications (GSM) , Long Term Evolution (LTE) , LTE-Evolution, LTE-Advanced (LTE-A) , New Radio (NR) , Wideband Code Division Multiple Access (WCDMA) , Code Division Multiple Access (CDMA) , GSM EDGE Radio Access Network (GERAN) , Machine Type Communication (MTC) and the like. The embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future. Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.

In the context of the present application, the terms “TCI” , “TCI state” , “uplink TCI state” , “downlink TCI state” , “joint TCI state” , “downlink or joint TCI state” , “spatial domain filter” , “spatial transmission filter” , “spatial transmitting filter” , “spatial reception filter” , “spatial receiving filter” , “spatial relation information” , “spatial relation info” , “spatial domain information” , “spatial filter” , “spatial information” , “set of QCL parameter (s) ” , “QCL parameter (s) ” , “QCL assumption” , “beam” and “QCL configuration” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “TCI field” , “TCI state field” , and “transmission configuration indicator” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “precoding matrix” , “precoding” , “beam” , “beamforming” , “vector” , “first vector” , “first basis” , “first basis vector” , “codebook” and “precoder” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “vector” , “bases” and “basis” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “single TRP” , “single TCI state” , “single TCI” , “S-TCI” , “single CORESET” , “single control resource set pool” , “single value of CORESET pool index” , “single CORESET pool index” , “no configuration of CORESET pool index” , “S-TRP” and “S-TCI state” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “multiple TRPs” , “multiple TCI states” , “multiple CORESETs” and “multiple control resource set pools” , “multi-TRP” , “multi-TCI state” , “multi-TCI” , “multi-CORESET” , “multiple values of CORESET Pool index” , “multiple CORESET Pool indexes” and “multi-control resource set pool” , “MTRP” and “M-TCI” , “M-TPR” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “synchronization signal (SS) and physical broadcast channel (PBCH) block” , “SS/PBCH block” and “SSB” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “pool” , “set” , “subset” , “group” , “unit” and “subgroup” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “index” , “indicator” , “indication” , “field” , “bit field” and “bitmap” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “physical resource block” , “resource block” , “PRB” and “RB” are optional examples and applicable in embodiments of the present disclosure the present disclosure. The terms “bit size” , “size of bits” , “number of bits” , “size of field” , “bitwidth” and “field size” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “reporting” , “report” and “feedback” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “based on” , “correspond to” , “corresponding to” and “associated with” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “reference signal” , “RS” , “channel state information reference signal” , “reference signal resource” , “reference signal ports” , “SRS resource” , “SRS ports” , “ports” , “antenna ports” , “PUSCH ports” and “SRS” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “ports” , “antenna ports” , “SRS ports” , “reference signal port” , “reference signal ports” , “port, “antenna port” and “SRS port” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “element of indication field” , “parameter” and “indication” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “synchronization signal physical broadcast channel (SS/PBCH) block” , “SS/PBCH block” , “synchronization signal block” and “SSB” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “reference signal received power” , “RSRP” , “layer-1 RSRP” , “L1-RSRP” , “filtered RSRP” , “layer-3 RSRP” and “L3-RSRP” are optional examples and applicable in embodiments of the present disclosure the present disclosure. In the context of the present application, the terms “signal to interference plus noise ratio” , “SINR” , “layer-1 SINR” , “L1-SINR” , “filtered SINR” , “layer-3 SINR” and “L3-SINR” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “identify” , “indicator” , “indication” and “ID” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “gap value” , “gap” , “value of gap” , “threshold” , “value of threshold” , “threshold value” , “first threshold value” , “first threshold” and “value of the first threshold” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “physical cell identity” , “PCI” , “cell identity” , “cell ID” , “cell” , “value of cell ID” , “component carrier” , “CC” and “value of PCI” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “a first cell” , “a serving cell” “a first value of physical cell identity (PCI) ” , “a first value of PCI” , “a first cell identity” , “a first component carrier” , “a first CC” and “a cell with serving cell PCI” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “PCI different from the serving cell” , “an additional PCI” , “a second PCI” , “a second cell” , “a cell different from the serving cell” , “a second value of PCI” , “a second cell identity” , “a second component carrier” , “a second CC” and “a cell with additional PCI” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In the context of the present application, the terms “physical uplink shared channel” , “PUSCH” , “uplink shared channel” , “ULSCH” and “UL-SCH” are optional examples and applicable in embodiments of the present disclosure the present disclosure.

In addition to normal data communications, the network device 120 may send a RS to the terminal device 110 in a downlink (DL) . Similarly, the terminal device 110 may transmit a RS to the network device 120 in an uplink (UL) . Generally speaking, a RS is a signal sequence (also referred to as “RS sequence” ) that is known by both the network device 120 and the terminal devices 110. For example, a RS sequence may be generated and transmitted by the network device 120 based on a certain rule and the terminal device 110 may deduce the RS sequence based on the same rule. For another example, a RS sequence may be generated and transmitted by the terminal device 110 based on a certain rule and the network device 120 may deduce the RS sequence based on the same rule. Examples of the RS may include but are not limited to downlink or uplink Demodulation Reference Signal (DMRS) , CSI-RS, Sounding Reference Signal (SRS) , Phase Tracking Reference Signal (PTRS) , Tracking Reference Signal (TRS) , fine time-frequency Tracking Reference Signal (TRS) , CSI-RS for tracking, Positioning Reference Signal (PRS) and so on.

The network device 120 may communicate data and control information to the terminal device 110 via a plurality of beams (also referred to as “DL beams” ) or based on at least one TCI state. For example, the at least one TCI state may be downlink TCI state or joint TCI state or downlink-Or-Joint-TCI-State. The terminal device 110 may also communicate data and control information to the network device 120 via a plurality of beams (also referred to as “UL beams” ) or based on at least one spatial relation information or based on at least one TCI state. For example, the at least one TCI state may be uplink TCI state or joint TCI state or downlink-Or-Joint-TCI-State. In some example embodiments, a beam is also defined and indicated by parameters of a transmission configuration indicator. For example, there may be a transmission configuration indicator (TCI) field in DCI. A value of the TCI field may be referred to as a “TCI codepoint” . In some embodiments, a TCI codepoint may indicate or comprise one or more TCI states. For example, one TCI codepoint may indicate one or two downlink TCI states. For another example, one TCI codepoint may indicate one or two uplink TCI states. For another example, one TCI codepoint may indicate one or two joint TCI states. For another example, one TCI codepoint may indicate one or two downlink or joint TCI states. For another example, one TCI codepoint may indicate one or two downlink TCI states and one or two uplink TCI states. For another example, one TCI codepoint may indicate one or two downlink or joint TCI states and one or two uplink TCI states. In some embodiments, each TCI state contains or comprises parameters for configuring a quasi co-location (QCL) relationship between one or two DL reference signals and/or one or two UL reference signals and at least one of: the DMRS ports of the PDSCH, the DMRS ports of PDCCH, the DMRS ports of PUSCH, the DMRS ports of PUCCH, the SRS ports of a SRS resource or the CSI-RS ports of a CSI-RS resource.

In addition, in the following description, some interactions are performed among the terminal device 110 and the network device 120 (such as, exchanging configuration (s) and so on) . It is to be understood that the interactions may be implemented either in one single signaling/message/configuration or multiple signaling/messages/configurations, including at least one of system information, radio resource control (RRC) message, downlink control information (DCI) message, uplink control information (UCI) message, media access control (MAC) control element (CE) and so on. The present disclosure is not limited in this regard.

Reference is made to FIG. 2, which illustrates a signaling flow 200 of CSI reporting in accordance with some embodiments of the present disclosure. For the purposes of discussion, the signaling flow 200 will be discussed with reference to FIG. 1, for example, by using the terminal device 110 and the network device 120.

In some embodiments, the network device 120 may transmit (2010) at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report to the terminal device 110. In some embodiments, the terminal device 110 may receive (2010) the at least one configuration for the first plurality of reference signal resources for channel measurement for the measurement report from the network device 120. In some embodiments, reference signal resource may be at least one of: CSI-RS resource or CSI-RS resource for tracking (e.g. TRS) . In some embodiments, the first plurality of reference signal resources may include or may be a first plurality of channel state information reference signal (CSI-RS) resources. In some embodiments, the first plurality of reference signal resources may include or may be a first plurality of tracking reference signal (TRS) resources. In some embodiments, the first plurality of reference signal resources may include a second plurality of groups of reference signal resources. In some embodiments, each group of reference signal resources may correspond to a transmission reception point (TRP) or a TRP group. In some embodiments, each reference signal resource in the first plurality of reference signal resources may correspond to a TRP or a TRP group.

In some embodiments, the terminal device 110 may receive (2010) the at least one configuration for a first plurality of CSI-RS (or TRS) resources (e.g. N_total or N_candidate CSI-RS resources) for channel measurement for a measurement report (e.g. calibration report or pre CSI report) . In some embodiments, the first plurality of CSI-RS resources may comprise a second plurality of groups of CSI-RS resources (e.g. N_candidate groups) . For example, each group of CSI-RS resources may correspond to one TRP or TRP group (e.g. the index of group of CSI-RS resources may be represented as t) . In some embodiments, t may be a positive integer. For example, t∈ {1, 2, …N_candidate} . In some embodiments, the first plurality of CSI-RS resources may comprise N_candidate CSI-RS resources. For example, each CSI-RS resource may correspond to one TRP or TRP group (e.g. the index of CSI-RS resource may be represented as t) . In some embodiments, t may be a positive integer. For example, t∈ {1, 2, …N_candidate} .

In some embodiments, the number of groups of reference signal resources may be a positive integer number and may be in a range from 1 to 16. In some embodiments, the number of reference signal resources may be a positive integer number and may be in a range from 1 to 16.In some embodiments, N_candidate may be a positive integer. In some embodiments, 1≤N_candidate≤16 or 1≤N_candidate≤4 or 1≤N_candidate≤8 or 1≤N_candidate≤32. In some embodiments, each group of CSI-RS resources may comprise N_G, t CSI-RS resources. In some embodiments, the group of CSI-RS resources with index t may comprise N_G, t CSI-RS resources. In some embodiments, N_G, t may be a positive integer. In some embodiments, 1≤N_G, t≤16 or 1≤N_G, t≤8 or N_G, t∈ {1, 2, 4, 6, 8, 12, 16} . In some embodiments, N_total may be a positive integer. In some embodiments, 1≤N_total≤16 or 1≤N_total≤4 or 1≤N_total≤8 or 1≤N_total≤32 or 1≤N_total≤64 or 1≤N_total≤128. In some embodiments, N_total=N_candidate. In some embodiments, N_total≥N_candidate .

In some embodiments, each group of reference signal resources may include a predetermined number of reference signal resources. In some embodiments, all reference signal resources in one group of reference signal resources may share a same at least one of: quasi co location (QCL) type A, QCL type C, or QCL type D. For example, the terminal device 110 may assume all the CSI-RS resources in one group share the same QCL TypeA (or TypeC) , and/or TypeD (if applicable) .

In some embodiments, each group of CSI-RS resources or each reference signal resource in the first plurality of reference resources may be a TRS set with two CSI-RS resources in one slot. For example, as shown in FIG. 3A, the first group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot S1, the second group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot S2, …, and the t-th group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot St. In some embodiments, t may be an integer number. For example, t∈ {1, 2, …N_candidate} . In some other embodiments, each group of CSI-RS resources may be a TRS set with four CSI-RS resources in two adjacent slots. For example, the first group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot S1 and two CSI-RS resources in slot S1+1. For example, the second group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot S2 and two CSI-RS resources in slot S2+1. …For example, the t-th group of CSI-RS resources may be a TRS set with two CSI-RS resources in slot St and two CSI-RS resources in slot St+1. In some embodiments, S1 and/or S2 and/or St may be an index of slot. In some embodiments, S1 and/or S2 and/or St may be a non-negative integer. In some embodiments, S1 and/or S2 and/or St may be within the range of {0, 1, …9} or {0, 1, …19} or {0, 1, …39} or {0, 1, …79} or {0, 1, …159} or {0, 1, …319} or {0, 1, …639} or {0, 1, …1279} .

In some embodiments, an interval between reference signal resources or between two adjacent reference signal resources in one group of reference signal resources may be a predetermined number of symbols or a predetermined number of slots or a configured number of symbols or a configured number of slots. In some embodiments, the interval between the CSI-RS resources in one group of CSI-RS resources (or in the group of CSI-RS resources with index t) may be T_t symbols or T_t slots. In some embodiments, T_t may be positive integer. For example, 1≤T_t≤8 or 1≤T_t≤16. In some embodiments, an interval between reference signal resources or between two adjacent reference signal resources in the first plurality of reference signal resources may be a predetermined number of symbols or a predetermined number of slots or a configured number of symbols or a configured number of slots. In some embodiments, the interval between the CSI-RS resources in the first plurality of CSI-RS resources may be T symbols or T slots. In some embodiments, T may be positive integer. For example, 1≤T≤8 or 1≤T≤16.

In some embodiments, at least one configuration may include the at least one configuration for the first plurality of reference signal resources and at least one of: the first parameter, the second parameter, the third parameter, the fourth parameter, the fifth parameter, the sixth parameter, the value of the number of first phase coefficient (or the value of the number of second phase coefficient or the value of the number of first frequency offset or the value of the number of second frequency offset or the value of the number of first time offset or the value of the number of second time offset) in the measurement report, the value of the number of reference signal resources associated with the measurement report, the value of the number of groups of reference signal resources associated with the measurement report and at least one of: the first configuration, the second configuration, the third configuration, the fourth configuration, the fifth configuration, the sixth configuration, the seventh configuration. In some embodiments, the at least one configuration may comprise the at least one configuration for the first plurality of CSI-RS resources and at least one of: the first parameter (for example, for the first phase coefficient) , the second parameter (for example, for the second phase coefficient) , the third parameter (for example, for the first frequency offset) , the fourth parameter (for example, for the second frequency offset) , the fifth parameter (for example, for the first time offset) , the sixth parameter (for example, for the second time offset) , the value of the number of first phase coefficient (or the value of the number of second phase coefficient or the value of the number of first frequency offset or the value of the number of second frequency offset or the value of the number of first time offset or the value of the number of second time offset) in the measurement report, the value of the number of reference signal resources associated with the measurement report, the value of the number of groups of reference signal resources associated with the measurement report, and the value of N_s (or N_s-1) .

In some embodiments, the first parameter may include at least one of: a first range of values (e.g. for first phase coefficient) , a first maximum value (e.g. of first phase coefficient) , a first minimum value (e.g. of first phase coefficient) , or the first granularity. In some embodiments, the second parameter may include at least one of: a second range of values (e.g. for second phase coefficient) , a second maximum value (e.g. of second phase coefficient) , a second minimum value (e.g. of second phase coefficient) , or the second granularity. In some embodiments, the first maximum value may be M₁*first granularity or M₁ or 36 or 8 or 16 or 32 or 64 or 128 or 256 or 90 or 180 or 360 or 7 or 15 or 31 or 63 or 127 or 89 or 255 or 359. In some embodiments, the first minimum value may be -M₁*first granularity or -M₁ or 0 or -1 or -36 or -8 or -16 or -32 or -64 or -128 or -256 or -90 or -180 or -360 or -7 or -15 or -31 or -63 or -127 or -89 or -255 or -359. In some embodiments, the first range of values may beoror {-M₁*first granularity, M₁*first granularity} or {0, M₁*first granularity} or {-M₁, M₁} or {0, M₁} . In some embodiments, the second range of values may beoror {-M₂*second granularity, M₂*second granularity} or {0, M₂*second granularity} or {-M₂, M₂} or {0, M₂} . In some embodiments, the first range of values may be different from the second range of values. In some embodiments, the first range of values may be larger than or no less than the second range of values. In some embodiments, the first range of values may be no larger than or less than the second range of values. In some embodiments, the first range of values may be same as the second range of values. In some embodiments, M₁ may be integer. In some embodiments, 4≤M₁≤36 or 0≤M₁≤180 or 1≤M₁≤180 or 1≤M₁≤90 or 0≤M₁≤90 or -36≤M₁≤36 or -180≤M₁≤180 or -90≤M₁≤90 or 0≤M₁≤128 or 0≤M₁≤127 or 0≤M₁≤7 or 0≤M₁≤8 or 0≤M₁≤15 or 0≤M₁≤16 or 0≤M₁≤31 or 0≤M₁≤32 or 0≤M₁≤64 or 0≤M₁≤63 or 0≤M₁≤255 or 0≤M₁≤511 or 0≤M₁≤128 or 0≤M₁≤127 or -7≤M₁≤8 or -8≤M₁≤8 or -16≤M₁≤16 or -16≤M₁≤16 or -31≤M₁≤32 or -32≤M₁≤32 or -64≤M₁≤64 or -63≤M₁≤64 or -256≤M₁≤256 or -512≤M₁≤512. In some embodiments, M₁ may be at least one of {1, 2, 3, 4, 6, 8} . In some embodiments, M₂ may be positive integer. In some embodiments, 1≤M₂≤12 or 1≤M₂≤180 or 0≤M₂≤180 or 1≤M₂≤90 or 0≤M₂≤90 or -36≤M₂≤36 or -180≤M₂≤180 or -90≤M₂≤90 0≤M₂≤128 or 0≤M₂≤127 or 0≤M₂≤7 or 0≤M₂≤8 or 0≤M₂≤15 or 0≤M₂≤16 or 0≤M₂≤31 or 0≤M₂≤32 or 0≤M₂≤64 or 0≤M₂≤63 or 0≤M₂≤255 or 0≤M₂≤511 or 0≤M₂≤128 or 0≤M₂≤127 or -7≤M₂≤8 or -8≤M₂≤8 or -16≤M₂≤16 or -16≤M₂≤16 or -31≤M₂≤32 or -32≤M₂≤32 or -64≤M₂≤64 or -63≤M₂≤64 or -256≤M₂≤256 or -512≤M₂≤512. In some embodiments, the second maximum value may be M₂*second granularity or M₂ or 36 or 8 or 16 or 32 or 64 or 128 or 256 or 90 or 180 or 360 or 7 or 15 or 31 or 63 or 127 or 89 or 255 or 359. In some embodiments, the second minimum value may be -M₂*second granularity or -M₂ or 0 or -1 or -36 or -8 or -16 or -32 or -64 or -128 or -256 or -90 or -180 or -360 or -7 or -15 or -31 or -63 or -127 or -89 or -255 or -359.

In some embodiments, the first range of values and/or the first parameter may be for the first phase coefficient and/or for the second phase coefficient. In some embodiments, the second range of values and/or the second parameter may be for the first phase coefficient and/or for the second phase coefficient. In some embodiments, the first granularity may be for the first phase coefficient and/or for the second phase coefficient. In some embodiments, the second granularity may be for the first phase coefficient and/or for the second phase coefficient. In some embodiments, the first range of values may be based on the first maximum value and/or the first minimum value. In some embodiments, the second range of values may be based on the second maximum value and/or the second minimum value.

In some embodiments, the first granularity may beorororororor orIn some embodiments, M₃ may be a positive integer. In some embodiments, 6≤M₃≤360 or 1≤M₃≤360 or 1≤M₃≤180 or 1≤M₃≤90. In some embodiments, M₃ may be at least one of {4, 6, 8, 10, 12, 16, 18, 20, 30, 60, 90, 180, 240, 360} . In some embodiments, the second granularity may beorororororororIn some embodiments, M₄ may be a positive integer. In some embodiments, 6≤M₄≤36 or 1≤M₄≤360 or 1≤M₄≤180 or 1≤M₄≤90. In some embodiments, M₄ may be at least one of {4, 6, 8, 10, 12, 16, 18, 20, 30, 36} . In some embodiments, the first granularity may be different from the second granularity. In some embodiments, the first granularity may be larger than or no less than the second granularity. In some embodiments, the first granularity may be no larger than or less than the second granularity. In some embodiments, the first granularity may be same as the second granularity.

In some embodiments, the third parameter may include at least one of: a third range of values (e.g. for first frequency offset) , a third maximum value (e.g. of first frequency offset) , a third minimum value (e.g. of first frequency offset) , a third granularity (e.g. for first frequency offset) . In some embodiments, the fourth parameter may include at least one of: a fourth range of values (e.g. for second frequency offset) , a fourth maximum value (e.g. of second frequency offset) , a fourth minimum value (e.g. of second frequency offset) , or a fourth granularity (e.g. for second frequency offset) . In some embodiments, the fourth range may be based on at least one of: a carrier frequency or subcarrier spacing. For example, the fourth range may be based on the carrier frequency (e.g. configured by carrierFreq or absoluteFrequencyPointA or absoluteFrequencySSB) and/or subcarrier spacing. In some embodiments, the third maximum value may be 100*M₅ Hz or 100*M₅ orHz oror M₅*third granularity or M₅ or M₅*200 or 300 or 200 or 100 or 400 or 500 or 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or maximum value of M₅ or maximum value of M₇. In some embodiments, the third minimum value may be -100*M₅ Hz or -100*M₅ orHz oror -M₅*third granularity or -M₅ or -M₅*200 or -300 or -200 or -100 or -400 or -500 or 0 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511 or minus of maximum value of M₅ or minus of maximum value of M₇ or minimum value of M₅ or minimum value of M₇. In some embodiments, the fourth maximum value may be 100*M₇ Hz or 100*M₇ orHz oror M₇*fourth granularity or M₇ or M₇*200 or 300 or 200 or 100 or 400 or 500 or 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or maximum value of M₅ or maximum value of M₇. In some embodiments, the fourth minimum value may be -100*M₇ Hz or -100*M₇ orHz oror -M₇*fourth granularity or -M₇ or -M₇*200 or -300 or -200 or -100 or -400 or -500 or 0 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511 or minus of maximum value of M₅ or minus of maximum value of M₇ or minimum value of M₅ or minimum value of M₇. In some embodiments, the third range may be {-100*M₅, 100*M₅} Hz or Hz or {-M₅*third granularity, M₅*third granularity} or {-M₅, M₅} or {0, 100*M₅}Hz or {0, 200*M₅} Hz orHz or {0, M₅*third granularity} or {0, M₅} or Hz orHz. In some embodiments, M₅ may be integer. In some embodiments, 0≤M₅≤128 or 0≤M₅≤127 or 0≤M₅≤7 or 0≤M₅≤8 or 0≤M₅≤15 or 0≤M₅≤16 or 0≤M₅≤31 or 0≤M₅≤32 or 0≤M₅≤64 or 0≤M₅≤ 63 or 0≤M₅≤255 or 0≤M₅≤511 or 0≤M₅≤128 or 0≤M₅≤127 or -7≤M₅≤8 or -8≤M₅≤8 or -16≤M₅≤16 or -16≤M₅≤16 or -31≤M₅≤32 or -32≤M₅≤32 or -64≤M₅≤64 or -63≤M₅≤64 or -256≤M₅≤256 or -512≤M₅≤512. In some embodiments, M₅ may be at least one of {1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10} . In some embodiments, M₆ may be value of carrier frequency. In some embodiments, A1 may be {0.05, 0.1, 5, 10, 0.2, 10, 20, 0.02, 0.04, 0.06, 0.08, 0.12, 0.16} . In some embodiments, B may be 106 or 108. In some embodiments, the fourth range may be {-100*M₇, 100*M₇} Hz orHz {-M₇*fourth granularity, M₇*fourth granularity} or {-M₇, M₇} or {0, 100*M₇} Hz or {0, 200*M₇} Hz or Hz or {0, M₇*fourth granularity} or {0, M₇} orHz or Hz. In some embodiments, M₇ may be at least one of {1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6, 6.5} . In some embodiments, M₇ may be integer. In some embodiments, 0≤M₇≤128 or 0≤M₇≤127 or 0≤M₇≤7 or 0≤M₇≤8 or 0≤M₇≤15 or 0≤M₇≤16 or 0≤M₇≤31 or 0≤M₇≤32 or 0≤M₇≤64 or 0≤M₇≤63 or 0≤M₇≤255 or 0≤M₇≤511 or 0≤M₇≤128 or 0≤M₇≤127 or -7≤M₇≤8 or -8≤M₇≤8 or -16≤M₇≤16 or -16≤M₇≤16 or -31≤M₇≤32 or -32≤M₇≤32 or -64≤M₇≤64 or -63≤M₇≤64 or -256≤M₇≤256 or -512≤M₇≤512. In some embodiments, M₆ may be value of carrier frequency. In some embodiments, A2 may be {0.05, 0.1, 5, 10, 0.2, 10, 20, 0.02, 0.04, 0.06, 0.08, 0.12, 0.16} . In some embodiments, B may be 106 or 108. In some embodiments, the third range of values may be different from the fourth range of values. In some embodiments, the third range of values may be larger than or no less than the fourth range of values. In some embodiments, the third range of values may be no larger than or less than the fourth range of values. In some embodiments, the third range of values may be same as the fourth range of values. In some embodiments, the third granularity may be at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, 150, 200} . In some embodiments, the fourth granularity may be at least one of {1, 2, 4, 8, 10, 20, 30, 40, 50, 100, 150, 200} . In some embodiments, the third granularity may be different from the fourth granularity. In some embodiments, the third granularity may be larger than or no less than the fourth granularity. In some embodiments, the third granularity may be no larger than or less than the fourth granularity. In some embodiments, the third granularity may be same as the fourth granularity. In this way, for different TRPs (e.g. macro and micro) , the requirements for frequency accurate may be different, network can provide the information for range of frequency offset for terminal device measurement and report.

In some embodiments, the third range of values and/or the third parameter may be for the first frequency offset and/or for the second frequency offset. In some embodiments, the fourth range of values and/or the fourth parameter may be for the first frequency offset and/or for the second frequency offset. In some embodiments, the third granularity may be for the first frequency offset and/or for the second frequency offset. In some embodiments, the fourth granularity may be for the first frequency offset and/or for the second frequency offset. In some embodiments, the third range of values may be based on the third maximum value and/or the third minimum value. In some embodiments, the fourth range of values may be based on the fourth maximum value and/or the fourth minimum value.

In some embodiments, the fifth parameter may include at least one of: a fifth range of values (e.g. for first time offset) , a fifth maximum value (e.g. of first time offset) , a fifth minimum value (e.g. of first time offset) , or the fifth granularity. In some embodiments, the sixth parameter may include at least one of: a sixth range of values (e.g. for second time offset) , a sixth maximum value (e.g. of second time offset) , a sixth minimum value (e.g. of second time offset) , or the sixth granularity.

In some embodiments, the fifth maximum value may be 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or M₈*fifth granularity or M₈ or M₈*2 or 0.5 ms or 1 ms or 500 microsecond (μs) or 250 μs or 125 μs or 62.5 μs or 35.21 μs or 5.21 μs or 4.7 μs or 4.6875 μs or 5.2083 μs or 33 μs or 3 μs or 8 μs or 25 μs or 15.625 μs or 7.8125 μs or M₁₂*64*T_c or M₁₂*T_s or M₁₂*64*T_c/2^μ or M₁₂*T_s/2^μ or M₁₂*16*64*T_c or M₁₂*16*T_s or M₁₂*16*64*T_c/2^μ or M₁₂*16*T_s/2^μ or M₁₂*64 or M₁₂ or M₁₂*64/2^μ or M₁₂/2^μ or M₁₂*16*64 or M₁₂*16 or M₁₂*16*64/2^μ or M₁₂*16/2^μor maximum value of M₈ or maximum value of M₉. In some embodiments, M₁₂ may be positive integer. In some embodiments, 144≤M₁₂≤160 or 1≤M₁₂≤512 or 144≤M₁₂≤1024 or 144≤M₁₂≤2048. In some embodiments, M₁₂ may be at least one of {64, 128, 144, 160, 256, 512, 768, 1024, 2048} .

In some embodiments, the fifth minimum value may be -300 or -200 or -100 or -400 or -500 or 0 or -1 or -M₈*fifth granularity or -M₈ or -M₈*2 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511 or 0 or -0.5 ms or -1 ms or -500 microsecond (μs) or -250 μs or -125 μs or -62.5 μs or -35.21 μs or -5.21 μs or -4.7 μs or -4.6875 μs or -5.2083 μs or -33 μs or -3 μs or -8 μs or -25 μs or -15.625 μs or -7.8125 μs or -M₁₂*64*T_c or -M₁₂*T_s or -M₁₂*64*T_c/2^μ or -M₁₂*T_s/2^μ or -M₁₂*16*64*T_c or -M₁₂*16*T_s or -M₁₂*16*64*T_c/2^μ or -M₁₂*16*T_s/2^μ or -M₁₂*64 or -M₁₂ or -M₁₂*64/2^μ or -M₁₂/2^μ or -M₁₂*16*64 or -M₁₂*16 or -M₁₂*16*64/2^μ or -M₁₂*16/2^μ or minus of maximum value of M₈ or minus of maximum value of M₉ or minimum value of M₈ or minimum value of M₉ or 0. In some embodiments, M₁₂ may be integer. In some embodiments, -160≤M₁₂≤-144 or -512≤M₁₂≤0 or -1024≤M₁₂≤-144 or -2048≤M₁₂≤-144. In some embodiments, M₁₂ may be at least one of {0, -64, -128, -144, -160, -256, -512, -768, -1024, -2048} .

In some embodiments, the sixth maximum value may be 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or M₉*sixth granularith or M₉ or M₉*2 or 0.5 ms or 1 ms or 500 microsecond (μs) or 250 μs or 125 μs or 62.5 μs or 35.21 μs or 5.21 μs or 4.7 μs or 4.6875 μs or 5.2083 μs or 33 μs or 3 μs or 8 μs or 25 μs or 15.625 μs or 7.8125 μs or M₁₂*64*T_c or M₁₂*T_s or M₁₂*64*T_c/2^μ or M₁₂*T_s/2^μ or M₁₂*16*64*T_c or M₁₂*16*T_s or M₁₂*16*64*T_c/2^μ or M₁₂*16*T_s/2^μ or M₁₂*64 or M₁₂ or M₁₂*64/2^μ or M₁₂/2^μ or M₁₂*16*64 or M₁₂*16 or M₁₂*16*64/2^μ or M₁₂*16/2^μor maximum value of M₈ or maximum value of M₉. In some embodiments, M₁₂ may be positive integer. In some embodiments, 144≤M₁₂≤160 or 1≤M₁₂≤512 or 144≤M₁₂≤1024 or 144≤M₁₂≤2048. In some embodiments, M₁₂ may be at least one of {64, 128, 144, 160, 256, 512, 768, 1024, 2048} .

In some embodiments, the sixth minimum value may be -300 or -200 or -100 or -400 or -500 or 0 or -1 or -M₉*sixth granularity or -M₉ or -M₉*2 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511 or 0 or -0.5 ms or -1 ms or -500 microsecond (μs) or -250 μs or -125 μs or -62.5 μs or -35.21 μs or -5.21 μs or -4.7 μs or -4.6875 μs or -5.2083 μs or -33 μs or -3 μs or -8 μs or -25 μs or -15.625 μs or -7.8125 μs or -M₁₂*64*T_c or -M₁₂*T_s or -M₁₂*64*T_c/2^μ or -M₁₂*T_s/2^μ or -M₁₂*16*64*T_c or -M₁₂*16*T_s or -M₁₂*16*64*T_c/2^μ or -M₁₂*16*T_s/2^μ or -M₁₂*64 or -M₁₂ or -M₁₂*64/2^μ or -M₁₂/2^μ or -M₁₂*16*64 or -M₁₂*16 or -M₁₂*16*64/2^μ or -M₁₂*16/2^μ or minus of maximum value of M₈ or minus of maximum value of M₉ or minimum value of M₈ or minimum value of M₉ or 0. In some embodiments, M₁₂ may be integer. In some embodiments, -160≤M₁₂≤-144 or -512≤M₁₂≤0 or -1024≤M₁₂≤-144 or -2048≤M₁₂≤-144. In some embodiments, M₁₂ may be at least one of {0, -64, -128, -144, -160, -256, -512, -768, -1024, -2048} .

In some embodiments, the fifth range of values may be M₈*64*T_c or M₈*T_s or M₈*64*T_c/2^μ or M₈*T_s/2^μ or M₈*16*64*T_c or M₈*16*T_s or M₈*16*64*T_c/2^μor M₈*16*T_s/2^μ or M₈*64 or M₈ or M₈*64/2^μ or M₈/2^μ or M₈*16*64 or M₈*16 or M₈*16*64/2^μ or M₈*16/2^μ or {-M₈*fifth granularity, M₈*fifth granularity} or {-M₈, M₈} or {0, M₈} or {0, 2*M₈} or {0, M₈*fifth granularity} . In some embodiments, M₈ may be non-negative integer. In some embodiments, 0≤M₈≤2048 or 0≤M₈≤64 or 0≤M₈≤63 or 0≤M₈≤144 or 0≤M₈≤143 or 0≤M₈≤160 or 0≤M₈≤159 or 0≤M₈≤768. In some embodiments, M₈ may be integer. In some embodiments, 0≤M₈≤128 or 0≤M₈≤127 or 0≤M₈≤7 or 0≤M₈≤8 or 0≤M₈≤15 or 0≤M₈≤16 or 0≤M₈≤31 or 0≤M₈≤32 or 0≤M₈≤64 or 0≤M₈≤63 or 0≤M₈≤255 or 0≤M₈≤511 or 0≤M₈≤128 or 0≤M₈≤127 or -7≤M₈≤8 or -8≤M₈≤8 or -16≤M₈≤16 or -16≤M₈≤16 or -31≤M₈≤32 or -32≤M₈≤32 or -64≤M₈≤64 or -63≤M₈≤64 or -256≤M₈≤256 or -512≤M₈≤512. In some embodiments, the sixth range of values may be M₉*64*T_c or M₉*T_s or M₉*64*T_c/2^μ or M₉*T_s/2^μ or M₉*16*64*T_c or M₉*16*T_s or M₉*16*64*T_c/2^μ or M₉*16*T_s/2^μ or M₉*64 or M₉ or M₉*64/2^μ or M₉/2^μ or M₉*16*64 or M₉*16 or M₉*16*64/2^μ or M₉*16/2^μor {-M₉*sixth granularith, M₉*sixth granularity} or {-M₉, M₉} or {0, M₉} or {0, 2*M₉}or {0, M₉*sixth granularity} . In some embodiments, M₉ may be non-negative integer. In some embodiments, 0≤M₉≤2048 or 0≤M₉≤64 or 0≤M₉≤63 or 0≤M₉≤144 or 0≤M₉≤143 or 0≤M₉≤160 or 0≤M₉≤159 or 0≤M₉≤768. In some embodiments, M₉ may be integer. In some embodiments, 0≤M₉≤128 or 0≤M₉≤127 or 0≤M₉≤7 or 0≤M₉≤8 or 0≤M₉≤15 or 0≤M₉≤16 or 0≤M₉≤31 or 0≤M₉≤32 or 0≤M₉≤64 or 0≤M₉≤63 or 0≤M₉≤255 or 0≤M₉≤511 or 0≤M₉≤128 or 0≤M₉≤127 or -7≤M₉≤8 or -8≤M₉≤8 or -16≤M₉≤16 or -16≤M₉≤16 or -31≤M₉≤32 or -32≤M₉≤32 or -64≤M₉≤64 or -63≤M₉≤64 or -256≤M₉≤256 or -512≤M₉≤512. In some embodiments, the fifth range of values may be different from the sixth range of values. In some embodiments, the fifth range of values may be larger than or no less than the sixth range of values. In some embodiments, the fifth range of values may be no larger than or less than the sixth range of values. In some embodiments, the fifth range of values may be same as the sixth range of values.

In some embodiments, the fifth granularity may be M₁₀*64*T_c or M₁₀*T_s or M₁₀*64*T_c/2^μ or M₁₀*T_s/2^μ or M₁₀*16*64*T_c or M₁₀*16*T_s or M₁₀*16*64*T_c/2^μ or M₁₀*16*T_s/2^μ or M₁₀*64 or M₁₀ or M₁₀*64/2^μ or M₁₀/2^μ or M₁₀*16*64 or M₁₀*16 or M₁₀*16*64/2^μ or M₁₀*16/2^μ or at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 32} . In some embodiments, the sixth granularity may be M₁₁*64*T_c or M₁₁*T_s or M₁₁*64*T_c/2^μ or M₁₁*T_s/2^μ or M₁₁*16*64*T_cor M₁₁*16*T_s or M₁₁*16*64*T_c/2^μor M₁₁*16*T_s/2^μ or M₁₁*64 or M₁₁ or M₁₁*64/2^μ or M₁₁/2^μ or M₁₁*16*64 or M₁₁*16 or M₁₁*16*64/2^μ or M₁₁*16/2^μ or at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 32}. In some embodiments, M₁₀ may be positive integer. In some embodiments, M₁₁ may be positive integer. In some embodiments, 1≤M₁₀≤64 or 1≤M₁₀≤16. In some embodiments, M₁₀ may be at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16} . In some embodiments, 16≤M₁₁≤128 or 4≤M₁₁≤64. In some embodiments, the fifth granularity may be different from the sixth granularity. In some embodiments, the fifth granularity may be larger than or no less than the sixth granularity. In some embodiments, the fifth granularity may be no larger than or less than the sixth granularity. In some embodiments, the fifth granularity may be same as the sixth granularity.

In some embodiments, the fifth range of values and/or the fifth parameter may be for the first time offset and/or for the second time offset. In some embodiments, the sixth range of values and/or the sixth parameter may be for the first time offset and/or for the second time offset. In some embodiments, the fifth granularity may be for the first time offset and/or for the second time offset. In some embodiments, the sixth granularity may be for the first time offset and/or for the second time offset. In some embodiments, the fifth range of values may be based on the fifth maximum value and/or the fifth minimum value. In some embodiments, the sixth range of values may be based on the sixth maximum value and/or the sixth minimum value.

In some embodiments, μ may be index of subcarrier spacing. In some embodiments, T_c and/or T_s may be time unit. In some embodiments, T_c may be defined as T_c=1/ (Δf_max·N_f) . In some embodiments, Δf_max=480·103Hz. In some embodiments, N_f=4096. In some embodiments, T_s may be defined as T_s=1/ (Δf_ref·N_f, ref) . In some embodiments, Δf_ref=15·103Hz. In some embodiments, N_f, ref=2048.

In some embodiments, the terminal device 110 may transmit (2020) to the network device 120 the measurement report based on the at least one configuration. In some embodiments, the network device 120 may receive (2020) the measurement report from the terminal device 110. In some embodiments, the measurement report may include one or more of:at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter or a fifth granularity, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter or a sixth granularity, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not. For example, as shown in FIG. 4A, the first granularity and the second granularity may be in angle or phase. In some other embodiments, as shown in FIG. 4B, the first granularity and the second granularity may be represented in vector or timing.

In some embodiments, the measurement report may comprise at least one of: at least one first phase coefficient corresponding to a first granularity (or a first parameter, e.g. a first stage for first phase coefficient, e.g. in frequency domain) , at least one first frequency offset (or represented as at least one third phase coefficient, e.g. in time domain) corresponding to a third parameter (or a third granularity, e.g. a first stage for first frequency offset or third phase coefficient) , at least one first time offset (or represented as at least one fifth phase coefficient, e.g. in frequency domain) corresponding to a fifth parameter (or a fifth granularity, e.g. a first stage for first time offset or fifth phase coefficient) , at least one second phase coefficient corresponding to a second granularity (or a second parameter, e.g. a second stage for second phase coefficient, e.g. in frequency domain) , at least one second frequency offset (or represented as at least one fourth phase coefficient, e.g. in time domain) corresponding to a fourth parameter (or a fourth granularity, e.g. a second stage for second frequency offset or fourth phase coefficient) , at least one second time offset (or represented as at least one sixth phase coefficient, e.g. in frequency domain) corresponding to a sixth parameter (or a sixth granularity, e.g. a second stage for second time offset or sixth phase coefficient) , at least one amplitude coefficient (or represented as L1-reference signal received power (RSRP) or L1-signal interference to noise ratio (SINR) ) , at least one resource group indication (e.g. represented as CSI-RS resource group indicator (CRGI) ) , at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not. In this way, with two stage of phase coefficient reporting (first phase coefficient and second phase coefficient corresponding to different granularity) , the network can adjust the timing difference between TRPs to be aligned related to offset corresponding to second granularity, which is sufficient for CJT (no need to be aligned without offset, as the offset can be reported in codebook) , and without large adjustment, the impact to terminal devices in the adjusted TRP may be reduced.

In some embodiments, the measurement report may comprise at least one of: at least one first phase coefficient, at least one first frequency offset, at least one first time offset, at least one second phase coefficient, at least one second frequency offset, at least one second time offset, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not.

In some embodiments, each one of the at least one first indication may indicate each one of the at least one first phase coefficient corresponding to the first granularity or the second granularity or corresponding to a first value of the first granularity or a second value of the first granularity and/or corresponding to the first range of values or the second range of values. In some embodiments, each one of the at least one second indication may indicate each one of the at least one second phase coefficient corresponding to the first granularity or the second granularity or corresponding to a first value of the second granularity or a second value of the second granularity and/or corresponding to the first range of values or the second range of values.

In some embodiments, each one of the at least one third indication may indicate each one of the at least one first frequency offset corresponding to the third granularity or the fourth granularity or corresponding to a first value of the third granularity or a second value of the third granularity and/or corresponding to the third range of values or the fourth range of values. In some embodiments, each one of the at least one fourth indication may indicate each one of the at least one second frequency offset corresponding to the third granularity or the fourth granularity or corresponding to a first value of the fourth granularity or a second value of the fourth granularity and/or corresponding to the third range of values or the fourth range of values.

In some embodiments, each one of the at least one fifth indication may indicate each one of the at least one first time offset corresponding to the fifth granularity or the sixth granularity or corresponding to a first value of the fifth granularity or a second value of the fifth granularity and/or corresponding to the fifth range of values or the sixth range of values. In some embodiments, each one of the at least one sixth indication may indicate each one of the at least one second time offset corresponding to the fifth granularity or the sixth granularity or corresponding to a first value of the sixth granularity or a second value of the sixth granularity and/or corresponding to the fifth range of values or the sixth range of values.

In some embodiments, the at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient and/or at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient may indicate whether the first phase coefficient (and/or the second phase coefficient) larger than or equal to the first threshold (or the second threshold) or not. In some embodiments, the at least one fifth indication indicating granularity and/or range of values for the at least one first time offset and/or the at least one sixth indication indicating granularity and/or range of values for the at least one second time offset may indicate whether the first time offset (and/or the second time offset) larger than or equal to the fifth threshold (or the sixth threshold or the length of cyclic prefix (CP) or 144*64*T_c or 144*T_s or 144*64*T_c/2^μ or 144*T_s/2^μ or 160*64*T_c or 160*T_s or 160*64*T_c/2^μ or 160*T_s/2^μor 144 or 160) or not.

In some embodiments, if the first time offset (and/or the second time offset) or the measurement time offset is larger than or equal to the fifth threshold (or the sixth threshold or the length of cyclic prefix (CP) or 144*64*T_c or 144*T_s or 144*64*T_c/2^μ or 144*T_s/2^μ or 160*64*T_c or 160*T_s or 160*64*T_c/2^μ or 160*T_s/2^μor 144 or 160) , the sixth granularity and/or the second value of the fifth granularity and/or the second value of the sixth granularity and/or the sixth range of values may be applied for the first time offset and/or the second time offset (or the second granularity and/or the second value of the first granularity and/or the second value of the second granularity and/or the second range of values may be applied for the first phase coefficient and/or the second phase coefficient) .

In some embodiments, if the first time offset (and/or the second time offset) or the measurement time offset is less than or equal to the fifth threshold (or the sixth threshold or the length of cyclic prefix (CP) or 144*64*T_c or 144*T_s or 144*64*T_c/2^μ or 144*T_s/2^μ or 160*64*T_c or 160*T_s or 160*64*T_c/2^μ or 160*T_s/2^μor 144 or 160) , the fifth granularity and/or the first value of the fifth granularity and/or the first value of the sixth granularity and/or the fifth range of values may be applied for the first time offset and/or the second time offset (or the first granularity and/or the first value of the first granularity and/or the first value of the second granularity and/or the first range of values may be applied for the first phase coefficient and/or the second phase coefficient) .

In some embodiments, if the first frequency offset (and/or the second frequency offset) or the measurement frequency offset is larger than or equal to the third threshold (or the fourth threshold) , the fourth granularity and/or the second value of the third granularity and/or the second value of the fourth granularity and/or the fourth range of values may be applied for the first frequency offset and/or the second frequency offset.

In some embodiments, if the first frequency offset (and/or the second frequency offset) or the measurement frequency offset is less than or equal to the third threshold (or the fourth threshold) , the third granularity and/or the first value of the third granularity and/or the first value of the fourth granularity and/or the third range of values may be applied for the first frequency offset and/or the second frequency offset.

In some embodiments, at least one of: the at least one first phase coefficient, the at least one second phase coefficient, the at least one first frequency offset, the at least one second frequency offset, the at least one first time offset, the at least one second time offset in the measurement report may be absolute value for one application or one adjustment or may be accumulated value for at least one application or at least one adjustment.

In some embodiments, the measurement report may comprise at least one of: at least one first phase coefficient corresponding to a first granularity (or a first parameter, e.g. a first stage for first phase coefficient, e.g. in frequency domain) , at least one first frequency offset (or represented as at least one third phase coefficient, e.g. in time domain) corresponding to a third parameter (or a third granularity, e.g. a first stage for first frequency offset or third phase coefficient) , at least one first time offset (or represented as at least one fifth phase coefficient, e.g. in frequency domain) corresponding to a fifth parameter (or a fifth granularity, e.g. a first stage for first time offset or fifth phase coefficient) , at least one second phase coefficient corresponding to a second granularity (or a second parameter, e.g. a second stage for second phase coefficient, e.g. in frequency domain) , at least one second frequency offset (or represented as at least one fourth phase coefficient, e.g. in time domain) corresponding to a fourth parameter (or a fourth granularity, e.g. a second stage for second frequency offset or fourth phase coefficient) , at least one second time offset (or represented as at least one sixth phase coefficient, e.g. in frequency domain) corresponding to a sixth parameter (or a sixth granularity, e.g. a second stage for second time offset or sixth phase coefficient) , at least one amplitude coefficient (or represented as L1-reference signal received power (RSRP) or L1-signal interference to noise ratio (SINR) ) , at least one resource group indication (e.g. represented as CSI-RS resource group indicator (CRGI) ) , at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not.

In some embodiments, the measurement report may comprise at least one of: at least one first phase coefficient, at least one first frequency offset, at least one first time offset, at least one second phase coefficient, at least one second frequency offset, at least one second time offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not.

In some embodiments, each one of the group of CSI-RS resources (or each one of the CSI-RS resource) indicated by the at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values may indicate at least one of: the first phase coefficient corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the first granularity or correspond to a first value of the first granularity and/or correspond to the first range of values, the second phase coefficient corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the first granularity or correspond to a first value of the second granularity and/or correspond to the first range of values, the first frequency offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the third granularity or correspond to a first value of the third granularity and/or correspond to the third range of values, the second frequency offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the third granularity or correspond to a first value of the fourth granularity and/or correspond to the third range of values, the first time offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the fifth granularity or correspond to a first value of the fifth granularity and/or correspond to the fifth range of values, and the second time offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the fifth granularity or correspond to a first value of the sixth granularity and/or correspond to the fifth range of values.

In some embodiments, each one of the group of CSI-RS resources (or each one of the CSI-RS resource) indicated by the at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values (or each one of the group of CSI-RS resources (or each one of the CSI-RS resource) not indicated by the at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) may indicate at least one of: the first phase coefficient corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the second granularity or correspond to a second value of the first granularity and/or correspond to the second range of values, the second phase coefficient corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the second granularity or correspond to a second value of the second granularity and/or correspond to the second range of values, the first frequency offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the fourth granularity or correspond to a second value of the third granularity and/or correspond to the fourth range of values, the second frequency offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the fourth granularity or correspond to a second value of the fourth granularity and/or correspond to the fourth range of values, the first time offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the sixth granularity or correspond to a second value of the fifth granularity and/or correspond to the sixth range of values, and the second time offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the sixth granularity or correspond to a second value of the sixth granularity and/or correspond to the sixth range of values.

In some embodiments, the terminal device may transmit a first measurement report to the network device, the first measurement report may comprise at least one of: the first phase coefficient corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the first granularity or correspond to a first value of the first granularity and/or correspond to the first range of values, the second phase coefficient corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the first granularity or correspond to a first value of the second granularity and/or correspond to the first range of values, the first frequency offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the third granularity or correspond to a first value of the third granularity and/or correspond to the third range of values, the second frequency offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the third granularity or correspond to a first value of the fourth granularity and/or correspond to the third range of values, the first time offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the fifth granularity or correspond to a first value of the fifth granularity and/or correspond to the fifth range of values, and the second time offset corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may correspond to the fifth granularity or correspond to a first value of the sixth granularity and/or correspond to the fifth range of values.

In some embodiments, the terminal device may transmit a second measurement report to the network device, the second measurement report may comprise at least one of: the first phase coefficient corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the second granularity or correspond to a second value of the first granularity and/or correspond to the second range of values, the second phase coefficient corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the second granularity or correspond to a second value of the second granularity and/or correspond to the second range of values, the first frequency offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the fourth granularity or correspond to a second value of the third granularity and/or correspond to the fourth range of values, the second frequency offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the fourth granularity or correspond to a second value of the fourth granularity and/or correspond to the fourth range of values, the first time offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the sixth granularity or correspond to a second value of the fifth granularity and/or correspond to the sixth range of values, and the second time offset corresponding to the group of CSI-RS resources (or the CSI-RS resource) may correspond to the sixth granularity or correspond to a second value of the sixth granularity and/or correspond to the sixth range of values.

In some embodiments, the transmission of the first measurement report may be earlier than or prior to the transmission of the second measurement report. In some embodiments, the transmission of the second measurement report may be later than the transmission of the first measurement report or after adjustment or application of the first measurement report.

In some embodiments, one first phase coefficient may be or may correspond to a phase in frequency domain. In some embodiments, one first frequency offset may be represented as one third phase coefficient. In some embodiments, one third phase coefficient may be or may correspond to a phase in time domain. In some embodiments, one first time offset may be represented as one fifth phase coefficient. In some embodiments, one fifth phase coefficient may be or may correspond to a phase in frequency domain. In some embodiments, one second phase coefficient may be or may correspond to a phase in frequency domain. In some embodiments, one second frequency offset may be represented as one fourth phase coefficient. In some embodiments, one fourth phase coefficient may be or may correspond to a phase in time domain. In some embodiments, one second time offset may be represented as one sixth phase coefficient. In some embodiments, one sixth phase coefficient may be or may correspond to a phase in frequency domain. In some embodiments, one amplitude coefficient may be represented as L1-reference signal received power (RSRP) or L1-signal interference to noise ratio (SINR) .

In some embodiments, the terminal device may receive at least one configuration indicating the content or the type for the measurement report. In some embodiments, the terminal device may receive at least one first configuration (e.g. represented as phase reporting or phase only reporting) indicating the measurement report at least comprising at least one first phase coefficient and/or at least one second phase coefficient. For example, the measurement report may comprise at least one first phase coefficient and at least one of: at least one second phase coefficient, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not.

In some embodiments, the first group of CSI-RS resources or the first CSI-RS resource or the reference group of CSI-RS resources or the reference CSI-RS resource may be the group of CSI-RS resources or the CSI-RS resource indicated by the first one of resource group indicator or the first one of resource indicator or CBRI #1 or CRI #1 or the group of CSI-RS resources (or the CSI-RS resource or the TRP or the TRP group) corresponding to a minimum value (or a minimum measured value) of first phase coefficient (or second phase coefficient) among the N_s (or N_s-1) groups of CSI-RS resources (or the N_s (or N_s-1) CSI-RS resources) . In some embodiments, the at least one first phase coefficient and/or the at least one second phase coefficient in the measurement report may be non-negative integer or non-negative value. In some embodiments, the at least one first frequency offset and/or the at least one second frequency offset and/or the at least one first time offset and/or the at least one second time offset may be either positive or negative value (or either positive or negative integer) or 0. For example, in case of the terminal device receives the first configuration and/or the fourth configuration and/or the fifth configuration and/or the seventh configuration.

In some embodiments, the terminal device may receive at least one second configuration (e.g. represented as frequency offset reporting or frequency offset only reporting) indicating the measurement report at least comprising at least one first frequency offset and/or at least one second frequency offset. For example, the measurement report may comprise at least one first frequency offset and at least one of: at least one second frequency offset, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second frequency offset present or not, at least one indication of whether first frequency offset present or not.

In some embodiments, the first group of CSI-RS resources or the first CSI-RS resource or the reference group of CSI-RS resources or the reference CSI-RS resource may be the group of CSI-RS resources or the CSI-RS resource indicated by the first one of resource group indicator or the first one of resource indicator or CBRI #1 or CRI #1 or the group of CSI-RS resources (or the CSI-RS resource or the TRP or the TRP group) corresponding to a minimum value (or a minimum measured value) of first frequency offset (or second frequency offset) among the N_s (or N_s-1) groups of CSI-RS resources (or the N_s (or N_s-1) CSI-RS resources) . In some embodiments, the at least one first frequency offset and/or the at least one second frequency offset in the measurement report may be non-negative integer or non-negative value. In some embodiments, the at least one first phase coefficient and/or the at least one second phase coefficient and/or the at least one first time offset and/or the at least one second time offset may be either positive or negative value (or either positive or negative integer) or 0. For example, in case of the terminal device receives the second configuration and/or the fourth configuration and/or the sixth configuration and/or the seventh configuration.

In some embodiments, the terminal device may receive at least one third configuration (e.g. represented as time offset reporting or time offset only reporting) indicating the measurement report at least comprising at least one first time offset and/or at least one second time offset. For example, the measurement report may comprise at least one first time offset and at least one of: at least one second time offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second time offset present or not, at least one indication of whether first time offset present or not.

In some embodiments, the first group of CSI-RS resources or the first CSI-RS resource or the reference group of CSI-RS resources or the reference CSI-RS resource may be the group of CSI-RS resources or the CSI-RS resource indicated by the first one of resource group indicator or the first one of resource indicator or CBRI #1 or CRI #1 or the group of CSI-RS resources (or the CSI-RS resource or the TRP or the TRP group) corresponding to a minimum value (or a minimum measured value) of first time offset (or second time offset) among the N_s (or N_s-1) groups of CSI-RS resources (or the N_s (or N_s-1) CSI-RS resources) . In some embodiments, the at least one first time offset and/or the at least one second time offset in the measurement report may (only) be non-negative integer or non-negative value. In some embodiments, the at least one first phase coefficient and/or the at least one second phase coefficient and/or the at least one first frequency offset and/or the at least one second frequency offset may be either positive or negative value (or either positive or negative integer) or 0. For example, in case of the terminal device receives the third configuration and/or the fifth configuration and/or the sixth configuration and/or the seventh configuration.

In some embodiments, the terminal device may receive at least one fourth configuration (e.g. represented as phase and frequency offset reporting or phase-frequency offset reporting) indicating the measurement report at least comprising at least one first phase coefficient and at least one first frequency offset and/or at least one second phase coefficient and/or at least one second frequency offset. For example, the measurement report may comprise at least one first phase coefficient and at least one first frequency offset and at least one of: at least one second phase coefficient, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one second frequency offset, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether second frequency offset present or not, at least one indication of whether first frequency offset present or not.

In some embodiments, the terminal device may receive at least one fifth configuration (e.g. represented as phase and time offset reporting or phase-time offset reporting) indicating the measurement report at least comprising at least one first phase coefficient and at least one first time offset and/or at least one second phase coefficient and/or at least one second time offset. For example, the measurement report may comprise at least one first phase coefficient, at least one first time offset and at least one of: at least one second phase coefficient, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one second time offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether second time offset present or not, at least one indication of whether first time offset present or not.

In some embodiments, the terminal device may receive at least one sixth configuration (e.g. represented as time offset and frequency offset reporting or time-frequency offset reporting) indicating the measurement report at least comprising at least one first time offset, at least one first frequency offset and/or at least one second time offset and/or at least one second frequency offset. For example, the measurement report may comprise at least one first time offset, at least one first frequency offset and at least one of: at least one second time offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one second frequency offset, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second time offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second frequency offset present or not, at least one indication of whether first frequency offset present or not.

In some embodiments, the terminal device may receive at least one seventh configuration (e.g. represented as phase and frequency offset and time offset reporting or phase-frequency-time offset reporting) indicating the measurement report at least comprising: at least one first phase coefficient, at least one first frequency offset, at least one first time offset and/or at least one second phase coefficient and/or at least one second frequency offset and/or at least one second time offset. For example, the measurement report may comprise: at least one first phase coefficient, at least one first frequency offset, at least one first time offset and at least one of:at least one second phase coefficient, at least one second frequency offset, at least one second time offset, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not.

In some embodiment, the measurement report may comprise at least one of: at least one first phase coefficient, at least one first frequency offset, at least one first time offset, at least one second phase coefficient, at least one second frequency offset, at least one second time offset, at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, and at least one indication of whether second frequency offset present or not.

In some embodiments, the number of groups of CSI-RS resources or the number of CSI-RS resources associated with the measurement report may be N_s or N_s-1. In some embodiments, N_s may be positive integer. In some embodiments, 1≤N_s≤N_candidate. In some embodiments, N_s may be at least one of {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 16, 32} . In some embodiments, each resource group indication may correspond to one group of CSI-RS resources. In some embodiments, the number of the at least one first phase coefficient and/or the number of the at least one first frequency offset and/or the number of the at least one second phase coefficient and/or the number of the at least one second frequency offset and/or the number of the at least one third phase coefficient and/or the number of the at least one fourth phase coefficient and/or the number of the at least one fifth phase coefficient and/or the number of the at least one sixth phase coefficient and/or the number of the at least one first time offset and/or the number of the at least one second time offset and/or the number of the at least one indication of whether first phase coefficient present or not and/or the number of the at least one indication of whether first frequency offset present or not and/or the number of the at least one indication of whether first time offset present or not and/or the number of the at least one indication of whether second time offset present or not and/or the number of the at least one amplitude coefficient and/or the number of the at least one indication of whether second phase coefficient present or not and/or the number of the at least one indication of whether second frequency offset present or not may be N_s (or N_s-1) .

In some embodiments, a first candidate value for one first phase coefficient (and/or for one second phase coefficient) may indicate a phase larger than and/or equal to a first threshold or may indicate a reserved value or may indicate the phase is larger than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT. In some embodiments, a second candidate value for one first phase coefficient (and/or for one second phase coefficient) may indicate a phase smaller than and/or equal to a second threshold or may indicate a reserved value or may indicate the phase is smaller than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT.

In some embodiments, the first threshold may be the first maximum value or the second maximum value or M₁*first granularity or M₁ or 36 or 8 or 16 or 32 or 64 or 128 or 256 or 90 or 180 or 360 or 7 or 15 or 31 or 63 or 127 or 89 or 255 or 359 or π orororororor 2*π or maximum value of M₁ or maximum value of M₂. In some embodiments, the second threshold may be the first minimum value or the second minimum value or -M₁*first granularity or -M₁ or 0 or -1 or -36 or -8 or -16 or -32 or -64 or -128 or -256 or -90 or -180 or -360 or -7 or -15 or -31 or -63 or -127 or -89 or -255 or -359 or -π orororororor -2*π or minus of maximum value of M₁ or minus of maximum value of M₂ or minimum value of M₁ or minimum value of M₂.

In some embodiments, a third candidate value for one first frequency offset (and/or for one second frequency offset) may indicate a frequency offset larger than and/or equal to a third threshold or may indicate a reserved value or may indicate the frequency offset is larger than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT. In some embodiments, a fourth candidate value for one first frequency offset (and/or for one second frequency offset) may indicate a frequency offset smaller than and/or equal to a fourth threshold or may indicate a reserved value or may indicate the frequency offset is smaller than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT.

In some embodiments, the third threshold may be 100 Hz or 150 Hz or 200 Hz or 128 Hz or 256 Hz or the third maximum value or the fourth maximum value or 100*M₅ Hz or 100*M₅ orHz oror M₅*third granularity or M₅ or M₅*200 or 300 or 200 or 100 or 400 or 500 or 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or maximum value of M₅ or maximum value of M₇. In some embodiments, the fourth threshold may be -100 Hz or -150 Hz or -200 Hz or -128 Hz or -256 Hz or the third minimum value or the fourth minimum value or -100*M₅ Hz or -100*M₅ orHz oror -M₅*third granularity or -M₅ or -M₅*200 or -300 or -200 or -100 or -400 or -500 or 0 or -1 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511 or minus of maximum value of M₅ or minus of maximum value of M₇ or minimum value of M₅ or minimum value of M₇.

In some embodiments, a fifth candidate value for one first time offset (and/or for one second time offset) may indicate a time offset larger than and/or equal to a first threshold or may indicate a reserved value or may indicate the time offset is larger than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT. In some embodiments, a sixth candidate value for one first time offset (and/or for one second time offset) may indicate a time offset smaller than and/or equal to a second threshold or may indicate a reserved value or may indicate the time offset is smaller than requirement or may indicate the associated group of CSI-RS resources (or the associated CSI-RS resource or the associated TRP or the associated TRP group) is not suitable for adjustment or not suitable for CJT.

In some embodiments, the fifth threshold may be the fifth maximum value or the sixth maximum value or 0.5 ms or 1 ms or 500 microsecond (μs) or 250 μs or 125 μs or 62.5 μs or 35.21 μs or 5.21 μs or 4.7 μs or 4.6875 μs or 5.2083 μs or 33 μs or 3 μs or 8 μs or 25 μs or 15.625 μs or 7.8125 μs or M₁₂*64*T_c or M₁₂*T_s or M₁₂*64*T_c/2^μ or M₁₂*T_s/2^μ or M₁₂*16*64*T_c or M₁₂*16*T_s or M₁₂*16*64*T_c/2^μ or M₁₂*16*T_s/2^μ or M₁₂*64 or M₁₂ or M₁₂*64/2^μ or M₁₂/2^μ or M₁₂*16*64 or M₁₂*16 or M₁₂*16*64/2^μ or M₁₂*16/2^μ or maximum value of M₈ or maximum value of M₉ or fifth maximum value may be 8 or 16 or 32 or 64 or 128 or 256 or 512 or 7 or 15 or 31 or 63 or 127 or 255 or 511 or M₈*fifth granularity or M₈ or M₈*2. In some embodiments, M₁₂ may be positive integer. In some embodiments, 144≤M₁₂≤160 or 1≤M₁₂≤512 or 144≤M₁₂≤1024 or 144≤M₁₂≤2048. In some embodiments, M₁₂ may be at least one of {64, 128, 144, 160, 256, 512, 768, 1024, 2048} .

In some embodiments, the sixth threshold may be the fifth minimum value or the sixth minimum value or 0 or -0.5 ms or -1 ms or -500 microsecond (μs) or -250 μs or -125 μs or -62.5 μs or -35.21 μs or -5.21 μs or -4.7 μs or -4.6875 μs or -5.2083 μs or -33 μs or -3 μs or -8 μs or -25 μs or -15.625 μs or -7.8125 μs or -M₁₂*64*T_c or -M₁₂*T_s or -M₁₂*64*T_c/2^μ or -M₁₂*T_s/2^μ or -M₁₂*16*64*T_c or -M₁₂*16*T_s or -M₁₂*16*64*T_c/2^μor -M₁₂*16*T_s/2^μ or -M₁₂*64 or -M₁₂ or -M₁₂*64/2^μ or -M₁₂/2^μ or -M₁₂*16*64 or -M₁₂*16 or -M₁₂*16*64/2^μ or -M₁₂*16/2^μ or minus of maximum value of M₈ or minus of maximum value of M₉ or minimum value of M₈ or minimum value of M₉ or -1 or -300 or -200 or -100 or -400 or -500 or 0 or -1 or -M₈*fifth granularity or -M₈ or -M₈*2 or -8 or -16 or -32 or -64 or -128 or -256 or -512 or -7 or -15 or -31 or -63 or -127 or -255 or -511. In some embodiments, M₁₂ may be integer. In some embodiments, -160≤M₁₂≤-144 or -512≤M₁₂≤0 or -1024≤M₁₂≤-144 or -2048≤M₁₂≤-144. In some embodiments, M₁₂ may be at least one of {0, -64, -128, -144, -160, -256, -512, -768, -1024, -2048} .

In some embodiments, the number of bits for one first phase coefficient may be N_b1. In some embodiments, N_b1 may be a positive integer. In some embodiments, 1≤N_b1≤16 or 1≤N_b1≤11 or 1≤N_b1≤8. In some embodiments, the number of bits for one second phase coefficient may be N_b2. In some embodiments, N_b2 may be a positive integer. In some embodiments, 1≤N_b2≤16 or 1≤N_b2≤11 or 1≤N_b2≤8 or 1≤N_b2≤N_b1 or N_b1≤N_b2≤16 or N_b1≤N_b2≤8 or N_b1≤N_b2≤11.

In some embodiments, the number of bits for one first frequency offset may be N_b3. In some embodiments, N_b3 may be a positive integer. In some embodiments, 1≤N_b3≤16 or 1≤N_b3≤11 or 1≤N_b3≤8. In some embodiments, the number of bits for one second frequency offset may be N_b4. In some embodiments, N_b4 may be a positive integer. In some embodiments, 1≤N_b4≤16 or 1≤N_b4≤11 or 1≤N_b4≤8 or 1≤N_b4≤N_b3 or N_b3≤N_b4≤16 or N_b3≤N_b4≤8 or N_b3≤N_b4≤11.

In some embodiments, the number of bits for one first time offset may be N_b5. In some embodiments, N_b5 may be a positive integer. In some embodiments, 1≤N_b5≤16 or 1≤N_b5≤11 or 1≤N_b5≤8. In some embodiments, the number of bits for one second time offset may be N_b5. In some embodiments, N_b6 may be a positive integer. In some embodiments, 1≤N_b6≤16 or 1≤N_b6≤11 or 1≤N_b6≤8 or 1≤N_b6≤N_b5 or N_b5≤N_b6≤16 or N_b5≤N_b6≤8 or N_b5≤N_b6≤11.

In some embodiments, the number of bits for one resource group indicator or one resource indicator or one CBGI or one CSI-RS resource indicator (CRI) may be N_b7 or 1 or 2 or 3 or 4. In some embodiments, N_b7 may be a positive integer. In some embodiments, 1≤N_b7≤4 or 1≤N_b7≤5 or 1≤N_b7≤6. In some embodiments, the number of bits for one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) and/or the number of bits for one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may be N_b7 or 1 or 2 or 3 or 4.

In some embodiments, the number of bits for one indication of whether first phase coefficient present or not and/or the number of bits for one indication of whether first frequency offset present or not and/or the number of bits for one indication of whether first time offset present or not and/or the number of bits for one indication of whether second time offset present or not and/or the number of bits for one amplitude coefficient and/or each indication of whether second phase coefficient present or not and/or the number of bits for one indication of whether second frequency offset present or not may be 1.

In some embodiments, the number of bits for one first indication indicating granularity and/or range of values for the at least one first phase coefficient and/or the number of bits for one second indication indicating granularity and/or range of values for the at least one second phase coefficient and/or the number of bits for one third indication indicating granularity and/or range of values for the at least one first frequency offset and/or the number of bits for one fourth indication indicating granularity and/or range of values for the at least one second frequency offset and/or the number of bits for one fifth indication indicating granularity and/or range of values for the at least one first time offset and/or the number of bits for one sixth indication indicating granularity and/or range of values for the at least one second time offset and/or the number of bits for one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) and/or the number of bits for one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) may be 1 or 2.

In some embodiments, each first phase coefficient and/or each first frequency offset and/or each second phase coefficient and/or each second frequency offset and/or each third phase coefficient and/or each fourth phase coefficient and/or each fifth phase coefficient and/or each sixth phase coefficient and/or each first time offset and/or each second time offset and/or each indication of whether first phase coefficient present or not and/or each indication of whether first frequency offset present or not and/or each indication of whether first time offset present or not and/or each indication of whether second time offset present or not and/or each amplitude coefficient and/or each indication of whether second phase coefficient present or not and/or each indication of whether second frequency offset present or not may correspond to one group of CSI-RS resources among the N_s (or N_s-1) groups or correspond to one CSI-RS resource among N_s (or N_s-1) resources or correspond to one group of CSI-RS resources among the N_candidate groups excluding a first group or correspond to one CSI-RS resource among the N_candidate resources excluding a first resource or correspond to one group of CSI-RS resources among the N_candidate-1 groups (e.g. N_candidate groups excluding a first group) or correspond to one CSI-RS resource among the N_candidate-1 resources (e.g. N_candidate resources excluding a first resource) or correspond to one resource group indication. In some embodiments, the number of at least one first phase coefficient and/or the number of at least one first frequency offset and/or the number of at least one first time offset may be N_s or N_s-1. In some embodiments, the number of at least one indication of whether second phase coefficient present or not and/or the number of at least one indication of whether second frequency offset present or not and/or the number of the at least one indication of whether first phase coefficient present or not and/or the number of the at least one indication of whether first frequency offset present or not and/or the number of the at least one indication of whether first time offset present or not and/or the number of the at least one indication of whether second time offset present or not may be N_s or N_s-1. In some embodiments, the number of at least one second phase coefficient and/or the number of at least one second frequency offset and/or the number of at least one second time offset may be N_sec. In some embodiments, N_sec may be non-negative integer. In some embodiments, 0≤N_sec≤N_s or 0≤N_sec≤N_s-1. In some embodiments, the number of at least one amplitude coefficient may be N_s or N_s-1. In some embodiments, the number of at least one resource indication or the number of at least one group resource indication may be 1 or N_s.

In some embodiments, the first phase coefficient may refer to or may be represented as one first frequency domain vector. In some embodiments, the second phase coefficient may refer to or may be represented as one second frequency domain vector.

In some embodiments, the reference group of CSI-RS resources (e.g. the first group of resources) or the reference CSI-RS resource (e.g. the first resource) for different coefficients and/or different offsets may be different. In some embodiments, the amplitude coefficient may be relative to the group of CSI-RS resources or the CSI-RS resource indicated by the CRGI #1. For example, in case of the amplitude coefficient is RSRP and/or SINR, the RSRP and/or SINR corresponding to CRGI#1 may be represented by 7-bit, and the RSRP and/or SINR corresponding to other CRGI#1 may be represented by 4-bit.

In some embodiments, the first phase coefficient and/or the second phase coefficient and/or the first frequency offset and/or the second frequency offset and/or the first time offset and/or the second time offset may be relative to the group of CSI-RS resources or the CSI-RS resource indicated by the CRGI #1 or the first configured group of CSI-RS resources among the N_candidate groups or the first CSI-RS resource among the N_candidate CSI-RS resources. For example, the network device 120 may configure the first configured group of CSI-RS resources or the first configured CSI-RS resource corresponding to the main TRP, while the amplitude coefficient from the main TRP may not be the strongest one. In some other embodiments, the at least one first phase coefficient and/or the at least one second phase coefficient may be the phase corresponding to the associated one group of CSI-RS resources (e.g. absolute value corresponding to one TRP, not differential/relative value) .

In some embodiments, the first frequency offset and/or the second frequency offset and/or the first time offset and/or the second time offset and/or the first phase coefficient and/or the second phase coefficient may be relative to the group of CSI-RS resources or the CSI-RS resource indicated by the CRGI #1 or the first configured group of CSI-RS resources among the N_candidate groups or the first configured CSI-RS resource among the N_candidate CSI-RS resources. In some embodiments, the at least one first frequency offset and/or the at least one second frequency offset may be the frequency offset corresponding to the associated one group of CSI-RS resources or the associated CSI-RS resource (e.g. absolute value corresponding to one TRP, not differential/relative value) . In some embodiments, the at least one first time offset and/or the at least one second time offset may be the time offset corresponding to the associated one group of CSI-RS resources or the associated CSI-RS resource (e.g. absolute value corresponding to one TRP, not differential/relative value) .

In some embodiments, the measurement report may include or may be comprised by two parts. In some embodiments, the first part may include at least one of: the at least one first phase coefficient, the at least one first frequency offset, the at least one first time offset, the at least one resource group indication, the at least one amplitude coefficient (or L1-RSRP or L1-SINR) , the at least one indication of whether second phase coefficient present or not, the at least one indication of whether first phase coefficient present or not, the at least one indication of whether first frequency offset present or not, the at least one indication of whether first time offset present or not, the at least one indication of whether second time offset present or not, at least one indication of whether second frequency offset present or not, the at least one first indication indicating granularity and/or range of values for the at least one first phase coefficient, the at least one second indication indicating granularity and/or range of values for the at least one second phase coefficient, the at least one third indication indicating granularity and/or range of values for the at least one first frequency offset, the at least one fourth indication indicating granularity and/or range of values for the at least one second frequency offset, the at least one fifth indication indicating granularity and/or range of values for the at least one first time offset, the at least one sixth indication indicating granularity and/or range of values for the at least one second time offset, the at least one CSI-RS group first indication (or at least one CSI-RS resource first indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) , and the at least one CSI-RS group second indication (or at least one CSI-RS resource second indication) indicating granularity and/or range of values corresponding to the indicated group of CSI-RS resources (or the indicated CSI-RS resource) . In some embodiments, the second part may include at least one of: the at least one second phase coefficient (e.g. if present) , the at least one second frequency offset (e.g. if present) , the at least one second time offset (e.g. if present) , the at least one amplitude coefficient (or L1-RSRP or L1-SINR, e.g. if present) .

In some embodiments, the bit size of the second part may be based on at least one indication in the first part. For example, the bit size of the second part may be based on at least one of: the at least one indication of whether second phase coefficient present or not, the at least one indication of whether first phase coefficient present or not, the at least one indication of whether first frequency offset present or not, the at least one indication of whether first time offset present or not, the at least one indication of whether second time offset present or not and at least one indication of whether second frequency offset present or not. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> phase coefficient -> frequency offset -> time offset -> amplitude coefficient or index. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> time offset -> phase coefficient -> frequency offset -> amplitude coefficient or index. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> phase coefficient -> time offset -> frequency offset -> amplitude coefficient or index. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> time offset -> frequency offset -> phase coefficient -> amplitude coefficient or index. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> frequency offset -> time offset -> phase coefficient ->amplitude coefficient or index. In some embodiments, the priority for the information in the measurement report may be in order of: TRP (or group of CSI-RS resources or CSI-RS resource) index -> frequency offset -> phase coefficient -> time offset -> amplitude coefficient or index.

In some embodiments, the at least one first phase coefficient (e.g. represented as) may be the measured phase (e.g. represented as) module a first value (e.g. represented as ) . In some embodiments, In some embodiments, the first value (e.g. ) may be based on the second granularity (or the second parameter) or based on the first granularity (or the first parameter) or based on the ratio between the second granularity and the first granularity. In some embodiments, the second phase coefficient may be the measured phase (e.g. ) divided by a second value. In some embodiments, the second value may be based on the second granularity (or the second parameter) or based on the first granularity (or the first parameter) or based on the ratio between the second granularity and the first granularity. In some embodiments, the first value may be same as or different from the second value.

In some embodiments, the at least one first frequency offset may be the measured frequency offset module a third value. In some embodiments, the third value may be based on the fourth granularity (or the fourth parameter) or based on the third granularity (or the third parameter) or based on the ratio between the fourth granularity and the third granularity. In some embodiments, the at least one second frequency offset may be the measured frequency offset divided by a fourth value. In some embodiments, the fourth value may be based on the fourth granularity (or the fourth parameter) or based on the third granularity (or the third parameter) or based on the ratio between the fourth granularity and the third granularity. In some embodiments, the third value may be same as or different from the fourth value.

In some embodiments, the at least one first time offset may be the measured time offset module a fifth value. In some embodiments, the fifth value may be based on the sixth granularity (or the sixth parameter) or based on the fifth granularity (or the fifth parameter) or based on the ratio between the sixth granularity and the fifth granularity. In some embodiments, the at least one second time offset may be the measured time offset divided by a sixth value. In some embodiments, the sixth value may be based on the sixth granularity (or the sixth parameter) or based on the fifth granularity (or the fifth parameter) or based on the ratio between the sixth granularity and the fifth granularity. In some embodiments, the fifth value may be same as or different from the sixth value.

In some embodiments, the at least one first phase coefficient (or the at least one first time offset) may be replaced by or may be represented as at least one first index of frequency domain vector (e.g. a starting index of a first window for frequency domain vectors) . In some embodiments, the at least one second phase coefficient (or the at least one second time offset) may be replaced by or may be represented as at least one length or at least one size of the first window or at least one second index of frequency domain vector (e.g. an ending index of the first window for frequency domain vectors) .

In some embodiments, the at least one first frequency offset may be replaced by or may be represented as at least one third index of time domain vector (e.g. a starting index of a second window for time domain vectors) . In some embodiments, the at least one second frequency offset may be replaced by or may be represented as at least one length or at least one size of the second window or at least one fourth index of time domain vector (e.g. an ending index of the second window for time domain vectors) .

In some embodiments, O_CPU= (N_G, t+1) *Y or O_CPU= (N_s+1) *Y or O_CPU=N_s*Y or O_CPU=N_total or O_CPU=N_candidate or O_CPU=N_s*N_G, t*Y or O_CPU= (N_s+1) *N_G, t*Y or O_CPU=N_s*2*Y or O_CPU= (N_s+1) *2*Y. In some embodiments, CPU may represent CSI processing unit. In some embodiments, Y may be at least one of {1, 1.5, 2, 3} . In some embodiments, Y may be defined based on UE capabilities and/or may be determined by the terminal device. In some embodiments, Z2/Z2’ for CSI processing time may be reused for the required processing time for the measurement report.

In some embodiments, the terminal device 110 may assume the adjustment of timing and/or time and/or phase and/or frequency corresponding to the measurement report (or corresponding to the TRPs (e.g. excluding the reference TRP) or corresponding to the groups of CSI-RS resources (e.g. excluding the first group or the reference group) or corresponding to the CSI-RS resources (e.g. excluding the first resource or the reference resource) ) to be applied after or starting from a timing. In some embodiments, the timing may be X millisecond (ms) or symbols or slots (or the timing may be from the first slot or first symbol) after the measurement report transmission (e.g. the first symbol or the last symbol of the PUCCH and/or PUSCH carrying the measurement report or e.g. the first symbol or the last symbol of the measurement report transmission) or after the terminal device receive a DCI scheduling a PUSCH (e.g. a second PUSCH) with same hybrid automatic repeat request (HARQ) process as the PUSCH (e.g. a first PUSCH) carrying the measurement report (e.g. transmission of the first PUSCH may be earlier than transmission of the second PUSCH) and new data scheduling. In some embodiments, the timing may be from the first slot or first symbol which is X ms or symbols or slots after the measurement report transmission (e.g. the first symbol or the last symbol of the PUCCH and/or PUSCH carrying the measurement report or e.g. the first symbol or the last symbol of the measurement report transmission) or after the terminal device receive a DCI scheduling a PUSCH (e.g. a second PUSCH) with same HARQ process as the PUSCH (e.g. a first PUSCH) carrying the measurement report (e.g. transmission of the first PUSCH may be earlier than transmission of the second PUSCH) and new data scheduling. In some embodiments, X may be a positive integer. In some embodiments, 1<=X<=336. In some embodiments, X may be at least one of {1, 2, 4, 7, 14, 28, 42, 56, 70, 84, 98, 112, 224, 336} .

In some embodiments, the terminal device 110 may assume a plurality of CSI-RS resources (e.g. for coherent joint transmission (CJT) CSI measurement or for channel measurement for CJT CSI) and/or the PDSCH DMRS port (s) to be QCLed with QCL TypeC and/or QCL TypeA with a CSI-RS resource or a TRS set corresponding to the first group of CSI-RS resources or the first one configured group of CSI-RS resources or first CSI-RS resource or first one configured CSI-RS resource. In some embodiments, there may be a scheme (e.g. scheme C) configured for CJT if the terminal device is configured with the measurement report or after the terminal device transmitted the measurement report or after the measurement report is applied, the terminal device may assume the PDSCH DMRS port (s) are QCLed with the first indicated TCI state with respect to QCL TypeA or QCLed with the two indicated TCI state with respect to QCL TypeA except for QCL parameters Doppler shift and/or average delay. In some embodiments, the terminal device 110 may assume one indicated TCI state applied for PDSCH reception in case of the terminal device is configured with reporting of the measurement report. Table 1 below shows an example of a procedure related to two states measurement report.

Table 1

Table 2 below shows an example of two states measurement report.

Table 2

In some embodiments, the network device 120 may transmit at least one configuration for physical uplink shared channel (PUSCH) transmission with 3 antenna ports (e.g. a first antenna port, a second antenna port and a third antenna port) to the terminal device 110. In some embodiments, the terminal device 110 may receive the at least one configuration for PUSCH transmission with 3 antenna ports from the network device 120. In some embodiments, the terminal device 110 may transmit the PUSCH transmission with a precoder or precoding based on the at least one configuration to the network device 120. In some embodiments, the network device 120 may receive the PUSCH transmission with a precoder or precoding based on the at least one configuration from the terminal device 110.

In some embodiments, the terminal device 110 may receive at least one indication of precoder or precoding or transmission precoding matrix indicator (TPMI) for PUSCH transmission with 3 antenna ports from the network device 120. In some embodiments, the number of bits for the at least one indication of precoder or precoding may be 1 or 2 or 3 in case of transform precoding is enabled. In some embodiments, the number of bits for the at least one indication of precoder or precoding may be 3 in case of transform precoding is disabled. In some embodiments, the number of bits for the at least one indication of precoder or precoding may be 1 or 2 in case of maximum number of layers for uplink transmission is 1 and/or if transform precoding is disabled. In some embodiments, the number of bits for the at least one indication of precoder or precoding may be 2 or 3 in case of maximum number of layers for uplink transmission is 2 and/or if transform precoding is disabled. In some embodiments, the number of bits for the at least one indication of precoder or precoding may be 3 in case of maximum number of layers for uplink transmission is 3 and/or if transform precoding is disable.

In some embodiments, Table 3A and/or Table 3B may be example when transform precoding is enabled and/or when transform precoding is disabled and/or when maximum number of layers for uplink transmission is 1. In some embodiments, for each a_1, i (i∈ {1, 2, 3} ) , the value may be at least one of {1, 2, 3} . In some embodiments, a_1, i (i∈ {1, 2, 3) ) may be same or different from each other. In some embodiments, the value of a_1, 1 may be at least one of {1, 2, 3} . In some embodiments, the value of a_1, 2 may be at least one of {1, 2, 3} . In some embodiments, the value of a_1, 3 may be at least one of {1, 2, 3} . In some embodiments, the value of a_1, 1 and/or the value of a_1, 2 and/or the value of a_1, 3 may be 3.

Table 3A

Table 3B

In some embodiments, Table 3C may be example when transform precoding is enabled and/or when transform precoding is disabled and/or when maximum number of layers for uplink transmission is 2. In some embodiments, for each a_2, i (i∈ {1, 2, 3} ) , the value may be at least one of {1, 2, 3} . In some embodiments, a_2, i (i∈ {1, 2, 3) ) may be same or different from each other. In some embodiments, the value of a_2, 1 may be at least one of {1, 2, 3} . In some embodiments, the value of a_2, 2 may be at least one of {1, 2, 3} . In some embodiments, the value of a_2, 3 may be at least one of {1, 2, 3} . In some embodiments, the value of a_2, 1 and/or the value of a_2, 2 and/or the value of a_2, 3 may be 3 or 6.

Table 3C

In some embodiments, Table 3D may be example when transform precoding is enabled and/or when transform precoding is disabled and/or when maximum number of layers for uplink transmission is 3. In some embodiments, the value of a3 may be at least one of {1, 2, 3} . In some embodiments, the value of a3 may be 3.

Table 3D

FIG. 5 illustrates a flowchart of a communication method 500 implemented at a terminal device, in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 500 will be described from the perspective of the terminal device 110 in FIG. 1.

At block 510, the terminal device 110 receives, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report. The first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not.

At block 520, the terminal device 110 transmit, to the network device, the measurement report based on the at least one configuration.

In some example embodiments, the first plurality of reference signal resources comprises a first plurality of channel state information reference signal (CSI-RS) resources, or wherein the first plurality of reference signal resources comprises a first plurality of tracking reference signal (TRS) resources.

In some example embodiments, the number of groups of reference signal resources is a positive integer number and is in a range from 1 to 16.

In some example embodiments, each group of reference signal resources corresponds to a transmission reception point (TRP) or a TRP group.

In some example embodiments, each group of reference signal resources includes a predetermined number of reference signal resources, and all reference signal resources in one group share a same at least one of: quasi co location (QCL) type A, QCL type C, or QCL type D.

In some example embodiments, each group of CSI-RS resources is a TRS set with two CSI-RS resource in one slot or four CSI-RS resources in two adjacent slots.

In some example embodiments, an interval between reference signal resources in one group of reference signal resources is a predetermined number of symbols or a predetermined number of slots.

In some example embodiments, the at least one configuration comprises the at least one configuration for the first plurality of reference signal resources and at least one of: the first parameter, the second parameter, the third parameter, the fourth parameter and the value of the number of groups of reference signal resources associated with the measurement report.

In some example embodiments, the first parameter comprises at least one of: a first range of values for first phase coefficient, a first maximum and/or first minimum value of first phase coefficient, or the first granularity.

In some example embodiments, the second parameter comprises at least one of: a second range of values for second phase coefficient, a second maximum and/or second minimum value of second phase coefficient, or the second granularity.

In some example embodiments, the third parameter comprises at least one of: a third range of values for first frequency offset, a third maximum and/or third minimum value of first frequency offset, a third granularity for first frequency offset.

In some example embodiments, the fourth parameter comprises at least one of: a fourth range of values for second frequency offset, a fourth maximum and/or fourth minimum value of second frequency offset, or a fourth granularity for second frequency offset.

In some example embodiments, the fourth range is based on at least one of: a carrier frequency or subcarrier spacing.

FIG. 6 illustrates a flowchart of a communication method 600 implemented at a network device, in accordance with some embodiments of the present disclosure. For the purpose of discussion, the method 600 will be described from the perspective of the network device 120 in FIG. 1.

At block 610, the network device 120 transmits, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report. The first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, and at least one of: at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not.

At block 620, the network device 120 receives, from the terminal device, the measurement report based on the at least one configuration.

In some example embodiments, the at least one configuration comprises the at least one configuration for the first plurality of reference signal resources and at least one of:the first parameter, the second parameter, the third parameter, the fourth parameter and the value of THE number of groups of reference signal resources associated with the measurement report.

FIG. 7 is a simplified block diagram of a device 700 that is suitable for implementing embodiments of the present disclosure. The device 700 can be considered as a further example implementation of any of the devices as shown in FIG. Accordingly, the device 700 can be implemented at or as at least a part of the terminal device 110 or the network device 120.

As shown, the device 700 includes a processor 710, a memory 720 coupled to the processor 710, a suitable transceiver 740 coupled to the processor 710, and a communication interface coupled to the transceiver 740. The memory 720 stores at least a part of a program 730. The transceiver 740 may be for bidirectional communications or a unidirectional communication based on requirements. The transceiver 740 may include at least one of a transmitter 742 and a receiver 744. The transmitter 742 and the receiver 744 may be functional modules or physical entities. The transceiver 740 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones. The communication interface may represent any interface that is necessary for communication with other network elements, such as X2/Xn interface for bidirectional communications between eNBs/gNBs, S1/NG interface for communication between a Mobility Management Entity (MME) /Access and Mobility Management Function (AMF) /SGW/UPF and the eNB/gNB, Un interface for communication between the eNB/gNB and a relay node (RN) , or Uu interface for communication between the eNB/gNB and a terminal device.

The program 730 is assumed to include program instructions that, when executed by the associated processor 710, enable the device 700 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 1 to 6. The embodiments herein may be implemented by computer software executable by the processor 710 of the device 700, or by hardware, or by a combination of software and hardware. The processor 710 may be configured to implement various embodiments of the present disclosure. Furthermore, a combination of the processor 710 and memory 720 may form processing means 750 adapted to implement various embodiments of the present disclosure.

The memory 720 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 720 is shown in the device 700, there may be several physically distinct memory modules in the device 700. The processor 710 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 700 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.

According to embodiments of the present disclosure, a terminal device, comprising a circuitry is provided. The circuitry is configured to: receive, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, and at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and transmit, to the network device, the measurement report based on the at least one configuration. According to embodiments of the present disclosure, the circuitry may be configured to perform any method implemented by the terminal device, as discussed above.

According to embodiments of the present disclosure, a network device, comprising a circuitry is provided. The circuitry is configured to: transmit, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and receive, from the terminal device, the measurement report based on the at least one configuration. According to embodiments of the present disclosure, the circuitry may be configured to perform any method implemented by the network device, as discussed above.

The term “circuitry” used herein may refer to hardware circuits and/or combinations of hardware circuits and software. For example, the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware. As a further example, the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions. In a still further example, the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation. As used herein, the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.

According to embodiments of the present disclosure, a terminal apparatus, is provided. The terminal apparatus, comprises means for receiving, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and means for transmitting, to the network device, the measurement report based on the at least one configuration. In some embodiments, the first apparatus may comprise means for performing the respective operations of the method 500. In some example embodiments, the first apparatus may further comprise means for performing other operations in some example embodiments of the method 500. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.

According to embodiments of the present disclosure, a network apparatus, is provided. The network apparatus, comprises means for transmitting, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and means for receiving, from the terminal device, the measurement report based on the at least one configuration. In some embodiments, the second apparatus may comprise means for performing the respective operations of the method 600. In some example embodiments, the second apparatus may further comprise means for performing other operations in some example embodiments of the method 600. The means may be implemented in any suitable form. For example, the means may be implemented in a circuitry or software module.

In summary, embodiments of the present disclosure provide the following aspects.

In an aspect, it is proposed a terminal device, comprising: a processor, configured to cause the terminal device to: receive, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and transmit, to the network device, the measurement report based on the at least one configuration.

In some embodiments, the first plurality of reference signal resources comprises a first plurality of channel state information reference signal (CSI-RS) resources, or wherein the first plurality of reference signal resources comprises a first plurality of tracking reference signal (TRS) resources.

In some embodiments, the number of groups of reference signal resources is a positive integer number and is in a range from 1 to 16.

In some embodiments, each group of reference signal resources corresponds to a transmission reception point (TRP) or a TRP group.

In some embodiments, each group of reference signal resources includes a predetermined number of reference signal resources, and all reference signal resources in one group share a same at least one of: quasi co location (QCL) type A, QCL type C, or QCL type D.

In some embodiments, each group of CSI-RS resources is a TRS set with two CSI-RS resource in one slot or four CSI-RS resources in two adjacent slots.

In some embodiments, an interval between reference signal resources in one group of reference signal resources is a predetermined number of symbols or a predetermined number of slots.

In some embodiments, the at least one configuration comprises the at least one configuration for the first plurality of reference signal resources and at least one of: the first parameter, the second parameter, the third parameter, the fourth parameter and the value of the number of groups of reference signal resources associated with the measurement report.

In some embodiments, the first parameter comprises at least one of: a first range of values for first phase coefficient, a first maximum and/or first minimum value of first phase coefficient, or the first granularity.

In some embodiments, the second parameter comprises at least one of: a second range of values for second phase coefficient, a second maximum and/or second minimum value of second phase coefficient, or the second granularity.

In some embodiments, the third parameter comprises at least one of: a third range of values for first frequency offset, a third maximum and/or third minimum value of first frequency offset, a third granularity for first frequency offset.

In some embodiments, the fourth parameter comprises at least one of: a fourth range of values for second frequency offset, a fourth maximum and/or fourth minimum value of second frequency offset, or a fourth granularity for second frequency offset.

In some embodiments, the fourth range is based on at least one of: a carrier frequency or subcarrier spacing.

In an aspect, it is proposed a network device, comprising: a processor, configured to cause the network device to: transmit, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of: at least one first phase coefficient corresponding to a first granularity, at least one first frequency offset corresponding to a third parameter, at least one first time offset corresponding to a fifth parameter, or at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and receive, from the terminal device, the measurement report based on the at least one configuration.

In an aspect, a terminal device, comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the terminal device, discussed above.

In an aspect, a network device, comprises: at least one processor; and at least one memory coupled to the at least one processor and storing instructions thereon, the instructions, when executed by the at least one processor, causing the device to perform the method implemented by the network device, discussed above.

In an aspect, a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.

In an aspect, a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.

In an aspect, a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the terminal device, discussed above.

In an aspect, a computer program comprising instructions, the instructions, when executed on at least one processor, causing the at least one processor to perform the method implemented by the network device, discussed above.

Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniques or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.

The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to FIGS. 1 to 7. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.

Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

The above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine readable medium may be a machine readable signal medium or a machine readable storage medium. A machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the machine readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.

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

Claims

A terminal device, comprising:

a processor, configured to cause the terminal device to:

receive, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of:

at least one first phase coefficient corresponding to a first granularity,

at least one first frequency offset corresponding to a third parameter,

at least one first time offset corresponding to a fifth parameter, or

at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and

transmit, to the network device, the measurement report based on the at least one configuration.
The terminal device of claim 1, wherein the first plurality of reference signal resources comprises a first plurality of channel state information reference signal (CSI-RS) resources, or

wherein the first plurality of reference signal resources comprises a first plurality of tracking reference signal (TRS) resources.
The terminal device of claim 1 or 2, wherein the number of groups of reference signal resources is a positive integer number and is in a range from 1 to 16.
The terminal device of claim 1, wherein each group of reference signal resources corresponds to a transmission reception point (TRP) or a TRP group.
The terminal device of claim 1 or 2, wherein each group of reference signal resources includes a predetermined number of reference signal resources, and

all reference signal resources in one group share a same at least one of: quasi co location (QCL) type A, QCL type C, or QCL type D.
The terminal device of claim 5, wherein each group of CSI-RS resources is a TRS set with two CSI-RS resource in one slot or four CSI-RS resources in two adjacent slots.
The terminal device of claim 1 or 2, wherein an interval between reference signal resources in one group of reference signal resources is a predetermined number of symbols or a predetermined number of slots.
The terminal device of claim 1 or 2, wherein the at least one configuration comprises the at least one configuration for the first plurality of reference signal resources and at least one of: the first parameter, the second parameter, the third parameter, the fourth parameter and the value of the number of groups of reference signal resources associated with the measurement report.
The terminal device of claim 8, wherein the first parameter comprises at least one of: a first range of values for first phase coefficient, a first maximum and/or first minimum value of first phase coefficient, or the first granularity.
The terminal device of claim 8, wherein the second parameter comprises at least one of: a second range of values for second phase coefficient, a second maximum and/or second minimum value of second phase coefficient, or the second granularity.
The terminal device of claim 8, wherein the third parameter comprises at least one of: a third range of values for first frequency offset, a third maximum and/or third minimum value of first frequency offset, a third granularity for first frequency offset.
The terminal device of claim 8, wherein the fourth parameter comprises at least one of: a fourth range of values for second frequency offset, a fourth maximum and/or fourth minimum value of second frequency offset, or a fourth granularity for second frequency offset.
The terminal device of claim 12, wherein the fourth range is based on at least one of: a carrier frequency or subcarrier spacing.
A network device, comprising:

a processor, configured to cause the network device to:

transmit, to a terminal device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources, and the measurement report comprises one or more of:

at least one first phase coefficient corresponding to a first granularity,

at least one first frequency offset corresponding to a third parameter,

at least one first time offset corresponding to a fifth parameter, or

at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and

receive, from the terminal device, the measurement report based on the at least one configuration.
The network device of claim 14, wherein the first plurality of reference signal resources comprises a first plurality of channel state information reference signal (CSI-RS) resources, or

wherein the first plurality of reference signal resources comprises a first plurality of tracking reference signal (TRS) resources.
The network device of claim 14 or 15, wherein each group of reference signal resources corresponds to a transmission reception point (TRP) or a TRP group.
The network device of claim 14 or 15, wherein the number of groups of reference signal resources is a positive integer number and is in a range from 1 to 16.
The network device of claim 14 or 15, wherein each group of reference signal resources includes a predetermined number of reference signal resources, and

all reference signal resources in one group share a same at least one of: quasi co location (QCL) type A, QCL type C, or QCL type D.
The network device of claim 18, wherein each group of CSI-RS resources is a TRS set with two CSI-RS resource in one slot or four CSI-RS resources in two adjacent slots.
A communication method implemented at a terminal device, comprising:

receiving, from a network device, at least one configuration for a first plurality of reference signal resources for channel measurement for a measurement report, wherein the first plurality of reference signal resources comprises a second plurality of groups of reference signal resources and the measurement report comprises one or more of:

at least one first phase coefficient corresponding to a first granularity,

at least one first frequency offset corresponding to a third parameter,

at least one first time offset corresponding to a fifth parameter, or

at least one of: at least one second phase coefficient corresponding to a second granularity, at least one second frequency offset corresponding to a fourth parameter, at least one second time offset corresponding to a sixth parameter, at least one amplitude coefficient, at least one resource group indication, at least one indication of whether second phase coefficient present or not, at least one indication of whether first phase coefficient present or not, at least one indication of whether first frequency offset present or not, at least one indication of whether first time offset present or not, at least one indication of whether second time offset present or not, or at least one indication of whether second frequency offset present or not; and

transmitting, to the network device, the measurement report based on the at least one configuration.