WO2025166664A1 - Information processing method, apparatus, and communication system - Google Patents

Abstract

Embodiments of the present application provide a method for reporting or receiving channel state information, an apparatus, and a communication system. The method for reporting channel state information comprises: a terminal device receives a channel state information reporting setting from a network device, wherein the channel state information reporting setting at least comprises first measurement mode configuration information; and the terminal device reports channel state information reporting information on the basis of the channel state information reporting setting.

Description

Information processing method, device and communication system Technical Field

The embodiments of the present application relate to the field of communication technologies.

Background Art

In the new radio (NR) system, users can measure the current channel according to the channel state information (CSI) resource settings and channel state information reporting settings configured on the base station side, and report feedback through the uplink control information (UCI) carrying CSI in the uplink channel (such as the physical uplink control channel (PUCCH) and the physical uplink shared channel (PUSCH)).

Multiple-transmission reception point (M-TRP) coordinated transmission is a key technology in NR systems for improving cell-edge throughput and providing more balanced quality of service for serving cells. M-TRP transmission schemes can be broadly categorized into two types: C-JT (coherent joint transmission) and NC-JT (non-coherent joint transmission).

It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art.

Summary of the Invention

The inventors discovered that: in the existing transmission scheme, taking the C-JT scheme as an example, the scheme only considers the transmission of data and/or reference signals under ideal scenarios (for example, ideal backhaul, ideal synchronization, etc.). However, in real scenarios, the geographical locations of different transmission points lead to large differences in the delay transmission characteristics and frequency deviation characteristics of different transmission points, which in turn leads to the fact that when the channels of different signals are superimposed according to different delays and frequency deviations, the signals cannot achieve complete synchronous transmission and cannot achieve ideal coherent transmission. In addition, the non-ideal backhaul caused by the radio frequency units of different transmission points will also cause delays and asynchrony in the backhaul between different transmission points and the central processing unit (CU). This leads to a decrease in data transmission performance and a decrease in the throughput of single users and the entire network.

In response to at least one of the above problems or other similar problems, embodiments of the present application provide an information processing method, apparatus, and communication system.

According to one aspect of an embodiment of the present application, an information processing device is provided, which is configured in a terminal device, and the device includes: a receiving unit, which receives a channel state information reporting setting from a network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and a sending unit, which reports channel state information reporting information according to the channel state information reporting setting.

According to another aspect of an embodiment of the present application, an information processing method is provided, which is applied to a terminal device, and the method includes: the terminal device receives a channel state information reporting setting from a network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; the terminal device reports the channel state information reporting information according to the channel state information reporting setting.

According to another aspect of an embodiment of the present application, an information processing device is provided, which is configured in a network device, and the device includes: a sending unit, which sends a channel state information reporting setting to a terminal device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and a receiving unit, which receives channel state information reporting information reported by the terminal device.

According to another aspect of an embodiment of the present application, an information processing method is provided, which is applied to a network device, and the method includes: the network device sends a channel state information reporting setting to a terminal device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and the network device receives the channel state information reporting information reported by the terminal device.

According to another aspect of an embodiment of the present application, a communication system is provided, which includes a network device and a terminal device, wherein the network device sends a channel state information reporting setting, wherein the channel state information reporting setting includes at least first measurement mode configuration information; the terminal device receives the channel state information reporting setting, and reports channel state information reporting information based on multi-point joint transmission according to the channel state information reporting setting.

One of the beneficial effects of the embodiments of the present application is that a terminal device receives a channel state information reporting setting from a network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information, and the terminal device reports channel state information reporting information according to the channel state information reporting setting. Thus, the terminal device can provide the network device with channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

With reference to the following description and drawings, the specific embodiments of the present application are disclosed in detail, indicating the principle of the present application. It should be understood that the embodiments of the present application are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present application include many changes, modifications and equivalents.

Features described and/or illustrated with respect to one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

It should be emphasized that the term "include/comprising" when used herein refers to the presence of features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps or components.

BRIEF DESCRIPTION OF THE DRAWINGS

The elements and features described in one figure or one embodiment of the present application can be combined with the elements and features shown in one or more other figures or embodiments. In addition, in the accompanying drawings, similar reference numerals represent corresponding parts in several figures and can be used to indicate corresponding parts used in more than one embodiment.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application;

FIG2 is a schematic diagram of a transmission scheme;

FIG3 is a schematic diagram of a method for reporting channel state information according to an embodiment of the present application;

FIG4 is a schematic diagram of an apparatus for reporting channel state information according to an embodiment of the present application;

FIG5 is a schematic diagram of a method for receiving channel state information according to an embodiment of the present application;

FIG6 is a schematic diagram of an apparatus for receiving channel state information according to an embodiment of the present application;

FIG7 is a schematic diagram of a network device according to an embodiment of the present application;

FIG8 is a schematic diagram of a terminal device according to an embodiment of the present application.

DETAILED DESCRIPTION

The above and other features of the present application will become apparent through the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present application are disclosed in detail, which illustrate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments. On the contrary, the present application includes all modifications, variations and equivalents that fall within the scope of the appended claims.

In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the name, but do not indicate the spatial arrangement or time sequence of these elements, and these elements should not be limited by these terms. The term "and/or" includes any one and all combinations of one or more of the associated listed terms. The term "including", “Including,” “having,” and the like refer to the presence of stated features, elements, components, or components, but do not preclude the presence or addition of one or more other features, elements, components, or components.

In the embodiments of this application, the singular forms "a," "the," etc. include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one." Furthermore, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. Furthermore, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

In the embodiments of the present application, the term "communication network" or "wireless communication network" may refer to a network that complies with any of the following communication standards, such as Long Term Evolution (LTE), enhanced Long Term Evolution (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

Furthermore, communication between devices in the communication system may be carried out according to communication protocols of any stage, such as but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and 5G, New Radio (NR), 6G, etc., and/or other communication protocols currently known or to be developed in the future.

In the embodiments of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network devices may include, but are not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), transmission point (TP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), etc.

Base stations may include, but are not limited to, NodeB (NB), evolved NodeB (eNodeB or eNB), 5G base stations (gNB), IAB hosts, and more. They may also include remote radio heads (RRHs), remote radio units (RRUs), relays, or low-power nodes (e.g., femto, pico, etc.). The term "base station" may include some or all of their functions, and each base station may provide communication coverage for a specific geographic area. The term "cell" may refer to a base station and/or its coverage area, depending on the context in which the term is used.

In the embodiments of the present application, the term "User Equipment" (UE) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be referred to as "Terminal Equipment" (TE). A terminal device may be fixed or mobile, and may also be referred to as a Mobile Station (MS). Station), terminal, user, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, mobile terminal (MT, Mobile Termination), etc.

Terminal devices may include but are not limited to the following devices: cellular phones, personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, machine-type communication devices, laptop computers, cordless phones, smart phones, smart watches, digital cameras, etc.

For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device for monitoring or measurement, including but not limited to: machine type communication (MTC) terminals, vehicle-mounted communication terminals, device-to-device (D2D) terminals, machine-to-machine (M2M) terminals, and the like.

In addition, the term "network side" or "network device side" refers to one side of the network, which can be a base station or one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the user or terminal side, which can be a UE or one or more terminal devices as described above. Unless otherwise specified herein, "device" can refer to either network equipment or terminal equipment.

In the following description, the terms "uplink control signal" and "uplink control information (UCI)" or "physical uplink control channel (PUCCH)" are interchangeable, and the terms "uplink data signal" and "uplink data information" or "physical uplink shared channel (PUSCH)" are interchangeable to avoid confusion.

The terms "downlink control signal" and "downlink control information (DCI)" or "physical downlink control channel (PDCCH)" are interchangeable, and the terms "downlink data signal" and "downlink data information" or "physical downlink shared channel (PDSCH)" are interchangeable.

In addition, the uplink signal may include an uplink data signal and/or an uplink control signal and/or PRACH and/or SRS (sounding reference signal), etc., which may also be referred to as uplink transmission (UL transmission) or uplink information or uplink channel. Sending/receiving an uplink transmission on an uplink resource may be understood as using the uplink resource to send/receive the uplink transmission. The downlink signal may include a downlink data signal and/or a downlink control signal and/or a synchronization signal (SS, such as PSS/SSS) and/or a broadcast channel (PBCH) and/or SSB (SS/PBCH block, including PSS, SSS and PBCH and its DMRS) and/or CSI-RS, etc., which may also be referred to as downlink transmission (DL transmission) or downlink information or downlink channel. Sending/receiving a downlink transmission on a downlink resource may be understood as using the downlink resource to send/receive the downlink transmission. In an embodiment of the present application, high-layer signaling may, for example, It is radio resource control (RRC) signaling; RRC signaling includes, for example, an RRC message, such as a broadcast/public RRC message/signaling (such as a master information block (MIB), system information), a dedicated RRC message/signaling; or an RRC information element (RRC information element, RRC IE); or an information field included in an RRC message or RRC information element (or an information field included in an information field). The high-layer signaling may also be, for example, medium access control layer (MAC) signaling; or a MAC control element (MAC control element, MAC CE). However, the present application is not limited thereto.

In the embodiments of the present application, a plurality refers to at least two, or two or more.

In the embodiments of the present application, predefined means specified in the protocol or determined according to the rules specified in the protocol, and no additional configuration is required. Configuration/indication refers to direct or indirect configuration/indication by the network device through high-layer signaling and/or physical layer signaling. Configuration/indication can be achieved by introducing high-layer parameters in high-layer signaling, and high-layer parameters refer to information fields (fields) and/or information elements/information units/information elements (IEs) in high-layer signaling. Physical layer signaling refers to, for example, control information (DCI) carried by the physical downlink control channel or control information carried by the sequence, but is not limited thereto.

For ease of description, the following description will be made using a base station as an example of an access network device. In the following description, "if ...", "under ..." and "when ..." can be used interchangeably without causing confusion.

The following describes the scenarios of the embodiments of the present application through examples, but the present application is not limited thereto.

FIG1 is a schematic diagram of a communication system according to an embodiment of the present application, schematically illustrating a situation using a terminal device and a network device as an example. As shown in FIG1 , a communication system 100 may include a network device 101 and terminal devices 102 and 103. For simplicity, FIG1 illustrates only two terminal devices and one network device as an example, but the embodiments of the present application are not limited thereto.

In the embodiment of the present application, existing services or future services can be transmitted between the network device 101 and the terminal devices 102 and 103. For example, these services may include, but are not limited to, enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), etc.

The terminal device 102 may send data to the network device 101, for example, using an authorized or unauthorized transmission mode. The network device 101 may receive data sent by one or more terminal devices 102 and provide feedback to the terminal device 102, such as ACK/NACK information. The terminal device 102 may confirm the end of the transmission process, or may continue with new data transmission, or may retransmit the data based on the feedback information.

It is worth noting that FIG1 shows that both terminal devices 102 and 103 are within the coverage of network device 101. Both terminal devices 102 and 103 may be outside the coverage range of the network device 101, or one terminal device 102 may be within the coverage range of the network device 101 while the other terminal device 103 may be outside the coverage range of the network device 101.

The following describes the terms involved in this application, but the following explanations do not constitute a limitation on the embodiments of this application.

In the embodiments of the present application, high-layer signaling may be, for example, radio resource control (RRC) signaling; for example, an RRC message, including, for example, a master information block (MIB), system information, or a dedicated RRC message; or an RRC IE (RRC information element). High-layer signaling may also be, for example, MAC (Medium Access Control) signaling; or a MAC CE (MAC control element). However, the present application is not limited thereto.

In the following description, if there is no confusion, TP, transmission point, TRP, transmitting and receiving point, and transmitting and receiving node can be used interchangeably; multiple TRPs, multi-TRP (multiple transmission and reception point), mTRP, multi-TRP, and MTRP can be used interchangeably; multi-point joint transmission, multi-transmission point cooperative transmission, and mTRP-based transmission can be used interchangeably.

In the following description, the terms "Doppler shift", "Doppler frequency deviation" and "Doppler shift" are used interchangeably.

Figure 2 is a schematic diagram of the transmission scheme. Figure 2(a) corresponds to the single-transmission reception point (S-TRP) scheme, Figure 2(b) corresponds to the C-JT scheme, and Figure 2(c) corresponds to the NC-JT scheme.

The specific difference between the C-JT and NC-JT schemes lies in the different mapping relationships between layers and multiple TRPs. In the C-JT scheme, all PDSCH/DMRS ports sent jointly from multiple TRPs and signals from multiple TRPs are coherently transmitted; in the NC-JT scheme, PDSCH/DMRS ports are sent separately from each TRP.

In previous standardization work, in Release 15 or 16 (Rel-15/16, R15/16), users all provided feedback or reported CSI based on the single-transmission reception point (S-TRP) scheme, where CSI included PMI (Precoding Matrix Indicator), RI (rank indication), LI (layer indication), CQI (Channel Quality Indicator), etc.

Release 17 (Rel-17, R17) supports CSI resource configuration and reporting enhancements for the NC-JT solution. The UE can send CSI resources based on multiple transmission points based on NC-JT (for example, M transmission points, M is greater than or equal to 2). The reference signal sent is used for joint channel measurement, and M PMIs, M RIs, M LIs, and N CQIs are reported (N=1 for a single codeword and N=2 for a double codeword). Currently, R17 only supports CSI reporting based on the 'typeI single-panel' codebook configuration.

Release 18 (Rel-18, R18) supports enhanced CSI resource configuration and reporting for the C-JT solution. The UE can perform joint channel measurement based on reference signals sent by multiple transmission points using C-JT and report the complete CSI for a single joint channel. Currently, R18 supports CSI reporting based on both eType II and feType II codebook configurations.

In the C-JT solution, each data layer is mapped to multiple coordinated TRPs/panels using a weighted vector. This solution is equivalent to splicing multiple subarrays into a higher-dimensional virtual array. Therefore, the C-JT solution can achieve higher shaping/precoding/multiplexing gains and significantly improve cell-edge user throughput and average cell throughput.

(1) The current Rel-18 standardization process has explicitly supported C-JT transmission schemes and enhanced CSI reporting in ideal time-frequency synchronization and backhaul scenarios. The UE can perform joint channel measurement based on the reference signals sent by K transmission points based on C-JT transmission, and jointly report a single PMI, RI, LI, and N CQIs (single codeword N = 1, dual codeword N = 2).

(2) PMI/precoding reporting scheme: In the C-JT transmission scheme, the following precoding information is supported, which is calculated and jointly fed back based on K CSI-RS resources. The minimum frequency domain subband width of subband precoding is 2PRB:

Wherein, w _k (i) is the PMI information of the k-th transmission point, 0≤k≤K.

(3) NR supports the measurement of delay and Doppler frequency deviation based on the time-frequency tracking reference signal (TRS), where:

a) TRS is configured as a TRS burst. X, Y, _St , and N represent the TRS burst length, TRS burst period, TRS OFDM symbol interval, and the number of OFDM symbols occupied by the TRS in a time slot, respectively. X and Y are both expressed in terms of the number of slots. The TRS time domain structure is designed as follows:

For frequency range 1 (FR1), i.e. less than 6 GHz, X = 2, _St = 4, N = 2;

For frequency range 2 (FR2), ie, greater than 6 GHz, X=1 or 2, _St =4, and N=2.

b) Specifically, each TRS resource is a CSI-RS resource of a single port and a single OFDM symbol. Therefore, a CSI-RS resource set containing N CSI-RS resources can be regarded as a TRS burst.

c) Supports traditional CSI-RS configurations such as P, SP, and AP. A CSI-RS resource setting can contain K non-zero power CSI-RS resource sets (NZP CSI-RS resource sets), each of which can be configured as trs-Info via RRC.

i. One resource is one OFDM symbol, so one burst requires 2 or 4 TRSs.

d) In R15-R17, TRS is only used for UE time-frequency tracking because TRS-based CSI reporting is not supported, that is, the reporting amount is ‘none’.

e) In Rel-18, to enhance Doppler frequency offset measurement in high-speed mobility scenarios, NR supports time domain correlation reporting of multiple delay paths based on TRS, primarily to reflect the time-varying nature of different channels caused by Doppler. For example, TDCP (Time Domain Correlation Parameter) reporting.

i. The reporting is mainly to feedback the time domain correlation value of two OFDM multipath channels separated by Dy = τ. The amplitude of the time domain correlation value can be completed based on the UE implementation algorithm using the following formula:

in,

Where A(t,τ) is the amplitude of the time domain correlation value, and c(t,τ) is the correlation value of the time domain channel response _hn (t) and _hn (t+τ) at time t and t+τ of the nth delay path.

Table 1 is the definition of reporting amount and the calculation formula of reporting amount.

Table 1 Definition of reported amount and calculation formula of reported amount

ii. When the reporting amount is ‘tdcp’, the CSI reporting configuration (CSI reportconfig) can have the following configurations:

1. Number of Delays Y: The base station can configure Y∈{1,2,3,4} (Y>1 depends on UE capability reporting) and the specific delay values of Y delay paths, namely {D ₁ ,…,D _Y }, through higher-layer signaling. If the base station configures Y, the UE is expected to report the amplitude value of the TDCP reporting quantity. Only when Y>1 can the UE report the amplitude and phase value of each delay path.

2. Delay value D _Y : The configurable delay values are D _i ∈{4} _symbols ∪{1,2,3,4,5,6,10} _slots ,i＝1,…,Y,where the value D _i ＝10 slots is restricted to subcarrier spacing configuration _μ≥1 ,the values other _than D _i ＝10 _slots are applicable to subcarrier spacing configurationsμ≥0,and where the values _{D i ＞} D _basic can be configured subject to UE capability,with _{D basic ＝} 1 _{slot .}

3. For the i-th delay, the UE selects two OFDM symbols of the TRS of D _i for measurement. For the TDCP report of TRS based on Rel-18, for a configured value of Y and a set of configured delay values {D1, ..., DY}, for the n-th delay Dn (n=1, ..., Y), the corresponding TDCP calculation is defined as the Dn OFDM symbols. For the Rel-18 TRS-based TDCP reporting, for a configured value of Y and a set of configured delay values {D1,…,DY}, for the n-th delay Dn (n＝1,…,Y), the respective TDCP calculation is defined as wideband normalized correlation between two TRS symbols separated by Dn symbols).

4. TDCP reported amplitude quantization: a) Codeword table for wideband normalized amplitude quantization, indicating N = 2 ^Q , where Q = 4, s = 1/2; b) Note: This does not exclude "invalid" autocorrelation value reporting.

5. TDCP reports phase quantization (phase is reported only when Y>1): a) θ(D) supports uniform quantization of 16PSK.

To address at least one of the above issues, embodiments of the present application provide a method, apparatus, and communication system for reporting or receiving channel state information. In the following description, if a parameter is represented by the same letter as in the preceding description, the meaning of the parameter shall be the same as that in the following description unless otherwise specified.

Embodiments of the first aspect

The present application embodiment provides a method for reporting channel state information, which is described from the perspective of a terminal device. FIG3 is a schematic diagram of the method for reporting channel state information according to an embodiment of the present application. As shown in FIG3 , the method includes:

301. A terminal device receives a channel state information reporting setting from a network device, where the channel state information reporting setting includes at least first measurement mode configuration information.

302. The terminal device reports channel state information reporting information according to the channel state information reporting configuration.

According to the above embodiment, a terminal device receives a channel state information reporting configuration from a network device, wherein the channel state information reporting configuration includes at least first measurement mode configuration information. The terminal device reports channel state information reporting information according to the channel state information reporting configuration. Thus, the terminal device can provide the network device with channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

It is worth noting that FIG3 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG3 above.

In some embodiments, in multi-point joint transmission, the UE can be connected to multiple TRPs. For example, the UE is connected to L TRPs, where L is an integer greater than or equal to 2. In order to facilitate the network device to connect the multiple TRPs in the time domain To synchronize in the upper and/or frequency domain, the UE needs to report the CSI reporting information related to each TRP to the network device.

In some embodiments, a terminal device receives a CSI reporting setting sent by a network device. The CSI reporting setting includes first measurement mode configuration information. The first measurement mode may include a measurement mode in a multi-point joint transmission mode. The first measurement mode configuration information may be configured and/or activated and/or indicated via at least one of radio resource control signaling, a media access control layer control element, or downlink control information. For example, the configuration is performed via CSI report config in RRC signaling.

After receiving the CSI reporting setting, if the CSI reporting setting includes the first measurement mode configuration information, the terminal device can determine that the CSI reporting setting is the CSI reporting setting under the first measurement mode. Thus, the terminal device can report the CSI reporting information under the first measurement mode.

In some embodiments, the channel state information reporting configuration may include reporting quantity information, wherein the reporting quantity information may be used to indicate that the channel state information reporting information includes at least one or more of the following channel state information: delay information, frequency offset information, and phase information.

After receiving the CSI reporting setting, the terminal device determines the CSI reporting information that needs to be reported based on the reporting amount information in the CSI reporting setting, that is, the CSI reporting information may include at least one of delay information, frequency offset information, and phase information.

In some embodiments, the reported amount information may be indicated by newly added units ‘Delay’ and/or ‘DelayShift’ and/or ‘AverageDelay’ and/or ‘DelaySpread’ and/or ‘Frequency offset’ and/or ‘FrequencySpread’ and/or ‘DelayFrequencyOffset’ in RRC signaling, or the reported amount information may be indicated by newly added units ‘TDCP’ and/or ‘FDCP’ in RRC signaling, or the reported amount information may be indicated by newly added units ‘r19-TDCP’ and/or ‘r19-FDCP’ in RRC signaling. The present application is not limited thereto, and the reported amount information may be indicated in other ways.

In some embodiments, the delay information may be represented in various ways. For example, the delay information may include the delay and/or first phase information related to the delay.

In some embodiments, the frequency offset information may be represented in various ways. For example, the frequency offset information may include the frequency offset and/or first phase information related to the frequency offset.

In some embodiments, the phase information may include phase difference information between uplink and downlink channels.

In some embodiments, the delay information and/or frequency offset information and/or phase information may be reported via a non-periodic physical uplink shared channel after uniform quantization. The present application is not limited thereto, and the delay information and/or frequency offset information and/or phase information may be reported via a non-periodic physical uplink shared channel after non-uniform quantization.

In some embodiments, the phase information may be reported in combination with the time delay information and/or the frequency offset information. The present application is not limited thereto, and the phase information may be reported separately from the time delay and/or the frequency offset information.

The CSI reporting information may be in various forms. The following is an exemplary description of the CSI reporting information.

In some embodiments, the CSI reporting information may include M absolute values of delay information and/or M absolute values of frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the absolute value of the delay information may be the actual value of the delay information, which is different from the relative value (or offset value, relative offset value) of the delay information. The relative value of the delay information may be the offset value of the absolute value of the delay information relative to other values. Similarly, the absolute value of the frequency offset information may be the actual value of the frequency offset information, which is different from the relative value (or offset value, relative offset value) of the frequency offset information. The relative value of the frequency offset information may be the offset value of the absolute value of the frequency offset information relative to other values.

In some embodiments, the CSI reporting information may include: 1 absolute value of the first delay information and M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information; and/or, 1 absolute value of the first frequency offset information and M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

That is, the terminal device can report the absolute value of a first delay/frequency offset information, and for other delay/frequency offset information, it can report the offset value between the absolute value of the other delay/frequency offset information and the absolute value of the first delay/frequency offset information, thereby reducing reporting overhead.

In this case, the index of the first delay/frequency deviation information can be configured by the network device, for example, the network device is configured through MAC CE or DCI, etc.; and/or, the index of the first delay/frequency deviation information can be predefined, for example, the delay/frequency deviation information with the smallest or largest index value or absolute value among the M delay/frequency deviation information is the first delay/frequency deviation information, etc.; and/or, the index of the first delay/frequency deviation information can be reported by the terminal device, for example, the terminal device reports through an M-bit bitmap or logM bits, etc.

In some embodiments, the CSI reporting information may include: M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information; and/or, M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

That is to say, the terminal device may not report the absolute value of the first delay/frequency offset information, but only report other delay/ The frequency offset information and the offset value of the first time delay/frequency offset information can further reduce the reporting overhead.

In this case, the first delay information may be reference delay information, and/or the first frequency offset information may be reference frequency offset information. The reference delay information may be any one of the M delay information; the reference frequency offset information may be any one of the M frequency offset information.

The index of the reference delay information and/or reference frequency offset information can be configured by the network device, for example, the network device is configured through MAC CE or DCI, etc.; and/or, the index of the reference delay information and/or reference frequency offset information is predefined, for example, the delay/frequency offset information with the smallest or largest index value or absolute value among the M delay/frequency offset information is the reference delay/frequency offset information, etc.; and/or, the index of the reference delay information and/or reference frequency offset information is reported by the terminal device, for example, the terminal device reports it through an M-bit bitmap or logM bits.

The present application is not limited thereto. In this case, the first delay information may also be the previous delay information of the second delay information, and/or the first frequency offset information may also be the previous frequency offset information of the second frequency offset information.

The above value of M can be configured by the network device. For example, the network device can indicate the value of M in the CSI reporting setting. The present application is not limited to this, and the value of M can be determined based on the channel state information reference signal resource configuration sent by the network device. For example, if the CSI-RS resource configuration includes L resources or resource groups or resource sets, then it can be determined that M=L. Among them, the L resources or resource groups or resource sets can correspond to L TRPs. In this case, the value of M can be the number of TRPs in multi-point joint transmission.

In some embodiments, in multi-point joint transmission, the terminal device may report a CSI reporting information for each TRP. For example, the value of M may be the number of TRPs in the multi-point joint transmission. Thus, the CSI information of multiple TRPs in the multi-point joint transmission can be provided to the network device, which helps the network device to compensate for delay and/or frequency offset. The present application is not limited to this, and the terminal device may report CSI reporting information corresponding to some TRPs in the multiple TRPs, that is, the value of M may not be equal to the number of TRPs in the multi-point joint transmission.

In some embodiments, the CSI reporting information may include M delay information groups and/or M frequency offset information groups, each delay information group includes N absolute values of delay information, and each frequency offset information group includes N absolute values of frequency offset information, where M and N are integers greater than or equal to 1.

In some embodiments, the number of delay information pieces included in each delay information group may be the same; and/or the number of frequency offset information pieces included in each frequency offset information group may be the same. The present application is not limited thereto, and the number of delay information pieces included in different delay information groups may be different; and/or the number of frequency offset information pieces included in different frequency offset information groups may be different.

In some embodiments, the CSI reporting information may include: 1 first delay information group and M-1 second A time delay information group, wherein the first time delay information group includes N absolute values of first time delay information, each second time delay information group includes N offset values of second time delay information, and the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information; and/or, 1 first frequency offset information group and M-1 second frequency offset information groups, the first frequency offset information group includes N absolute values of first frequency offset information, each second frequency offset information group includes N offset values of second frequency offset information, and the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, wherein N and M are integers greater than or equal to 1.

That is, the terminal device can report the absolute value of a group of first delay/frequency offset information, and for the delay/frequency offset information in other groups, the offset value between the absolute value of the delay/frequency offset information and the absolute value of the first delay/frequency offset information can be reported. Thus, the reporting overhead can be reduced.

In this case, the index of the first delay/frequency offset information group can be configured by the network device, for example, the network device is configured through MAC CE or DCI, etc.; and/or, the index of the first delay/frequency offset information group can be predefined, for example, the delay/frequency offset information group with the smallest or largest index value among the M delay/frequency offset information groups is the first delay/frequency offset information group, etc.; and/or, the index of the first delay/frequency offset information group can be reported by the terminal device, for example, the terminal device reports it through an M-bit bitmap or logM bits.

In some embodiments, the number of delay information pieces included in each delay information group may be the same; and/or the number of frequency offset information pieces included in each frequency offset information group may be the same. The present application is not limited thereto, and the number of delay information pieces included in different delay information groups may be different; and/or the number of frequency offset information pieces included in different frequency offset information groups may be different.

In some embodiments, the CSI reporting information may include: M-1 second delay information groups, each of the second delay information groups includes N offset values of the second delay information, the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information, and/or, M-1 second frequency offset information groups, each of the second frequency offset information groups includes N offset values of the second frequency offset information, the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, where N and M are integers greater than or equal to 1.

That is to say, the terminal device may not report the absolute value of the first delay/frequency offset information group, but only report the offset values of other delay/frequency offset information groups and the first delay/frequency offset information group, thereby further reducing the reporting overhead.

In this case, the corresponding first delay information may be the following information: the index of the first delay information in the first delay information group is the same as the index of the second delay information in the second delay information group; And/or, the corresponding first frequency offset information may be the following information: the index of the first frequency offset information in the first frequency offset information group is the same as the index of the second frequency offset information in the second frequency offset information group.

The present application is not limited to this. The corresponding first delay information can be any one of the first delay information in the first delay information group, for example, the first delay information with the lowest or highest index value; and/or, the corresponding first frequency deviation information can be any one of the first frequency deviation information in the first frequency deviation information group, for example, the first frequency deviation information with the lowest or highest index value.

The first delay information group may be a reference delay information group, and/or the first frequency offset information group may be a reference frequency offset information group. The reference delay information group may be any one of the M delay information groups; and the reference frequency offset information may be any one of the M frequency offset information groups.

The index of the reference delay information group and/or the reference frequency offset information group is configured by the network device, for example, the network device is configured through MAC CE or DCI, etc.; and/or, the index of the reference delay information group and/or the reference frequency offset information group is predefined, for example, the delay/frequency offset information group with the smallest or largest index value among the M delay/frequency offset information groups is the reference delay/frequency offset information group, etc.; and/or, the index of the reference delay information group and/or the reference frequency offset information group is reported by the terminal device, for example, the terminal device reports it through an M-bit bitmap or logM bits.

The present application is not limited to this. In this case, the first delay information group may be the previous delay information group of the second delay information group, and/or the first frequency offset information group may be the previous frequency offset information group of the second frequency offset information group.

For embodiments in which the CSI reporting information includes a delay information group and/or a frequency offset information group, the N delay information within each delay information group may be sorted according to the absolute value of the delay information. For example, the delay information may be sorted in descending order of absolute value, or in descending order of absolute value, etc. For example, in the case of reporting the absolute value of M groups of delay information, the absolute values of the N delay information in one delay information group may be reported in descending order; in the case of reporting the offset values of M-1 groups of delay information, the offset values of the N delay information in one delay information group may be reported in descending order of absolute value.

Alternatively, the N delay information in each delay information group may be sorted according to the energy strength of the corresponding path, for example, in descending order of the energy strength of the corresponding path, and so on.

The order of the N frequency offset information in each frequency offset information group is similar to the order of the N time delay information in each time delay information group. For example, the N frequency offset information in each frequency offset information group can be ordered according to the absolute value of the frequency offset information. Alternatively, the N frequency offset information in each frequency offset information group can be sorted according to the energy strength of the corresponding path.

For embodiments in which the CSI reporting information includes a delay information group and/or a frequency offset information group, the value of M involved in these embodiments can be configured by the network device. For example, the network device can indicate the value of M in the CSI reporting setting. The present application is not limited to this, and the value of M can be determined based on the channel state information reference signal resource configuration sent by the network device. For example, if the CSI-RS resource configuration includes L resources or resource groups or resource sets, then it can be determined that M=L. The L resources or resource groups or resource sets can correspond to L TRPs, in which case the value of M can be the number of TRPs in the multi-point joint transmission.

In some embodiments, in multi-point joint transmission, the terminal device may report a set of CSI reporting information for each TRP. For example, the value of M may be the number of TRPs in the multi-point joint transmission. Thus, more detailed CSI information of multiple TRPs in the multi-point joint transmission can be provided to the network device, which helps the network device to perform more accurate delay and/or frequency offset compensation. The present application is not limited to this, and the terminal device may report CSI reporting information corresponding to some TRPs in the multiple TRPs, that is, the value of M may not be equal to the number of TRPs in the multi-point joint transmission.

The following describes the method for reporting CSI in the present application with reference to specific examples.

Implementation method one:

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE identifies and measures the channels of M = 4 transmission points. For example, the UE can measure and calculate multiple delay paths for each transmission point.

Step 2: The UE determines M delays and/or frequency offsets. For example, for a transmission point, the UE determines the delay and/or frequency offset of a delay path channel. For example, for a transmission point, the UE may select the delay and/or frequency offset of a delay path channel with the highest power or energy. Alternatively, for a transmission point, the UE may determine the weighted average of the delays and/or frequency offsets of multiple delay paths.

Step 3: The UE reports based on the determined M time delays and/or frequency deviations.

Solution 1: The UE reports M=4 absolute values of delay and/or frequency offset, for example, M absolute values of delay D1, D2, D3, D4; and M absolute values of frequency offset F1, F2, F3, F4.

Optionally, the absolute value of the delay and the absolute value of the frequency offset correspond one to one, for example, D1 corresponds to F1, representing the channel delay and frequency offset of the first transmission point respectively.

Solution 2: The UE reports an absolute value of a reference delay and/or frequency offset, and reports M-1 relative offset values relative to the absolute value of the reference delay and/or frequency offset.

For example, the absolute values of the M delays are D1, D2, D3, and D4, and the absolute values of the frequency offsets of the M transmission points are F1, F2, F3, and F4. The UE can report D1, D2-D1, D3-D1, D4-D1, and F1, F2-F1, F3-F1, and F4-F1.

Optionally, the absolute value of the delay and the absolute value of the frequency offset correspond one to one, for example, D1 corresponds to F1, representing the channel delay and frequency offset of the first transmission point respectively.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D3-D1 corresponds to F3-F1, which respectively represent the channel delay offset value and frequency offset offset value of the third transmission point relative to the first transmission point.

Solution 3: The UE reports M-1 relative offset values relative to the absolute value of the reference delay and/or frequency offset.

For example, if the absolute values of the M delays are D1, D2, D3, and D4, and the absolute values of the frequency offsets of the M transmission points are F1, F2, F3, and F4, the UE can report D2-D1, D3-D1, D4-D1, F2-F1, F3-F1, and F4-F1.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D2-D1 corresponds to F2-F1, which respectively represent the offset value of the channel delay and the offset value of the frequency offset of the second transmission point relative to the first transmission point.

Solution 4: The UE reports M-1 relative offset values relative to the absolute value of the previous delay and/or frequency offset.

For example, the absolute values of M time delays are D1, D2, D3, and D4; the absolute values of frequency offsets of M transmission points are F1, F2, F3, and F4. The UE can use D2-D1, D3-D2, D4-D3, F2-F1, F3-F2, and F4-F3.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D3-D2 corresponds to F3-F2, which respectively represent the channel delay offset value and frequency offset offset value of the third transmission point relative to the second transmission point.

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, where the delay and/or frequency offset corresponding to the reference value is the reference delay and/or reference frequency offset. For example, the first delay/frequency offset D1, F1 is the reference delay/reference frequency offset.

The reference value can be configured by the base station, predefined, or measured and reported by the UE. For example, the reference value can be reported on the PUCCH and/or PUSCH using an M-bit bitmap. For example, reporting 1000 indicates that the first delay/frequency offset D1, F1 is the reference delay/reference frequency offset. Alternatively, the reference value can be reported on the PUCCH and/or PUSCH using log(M) bits. For example, reporting 01 indicates that the first delay/frequency offset D1, F1 is the reference delay/reference frequency offset.

Implementation method 2:

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE Channels of M=4 transmission points are identified and measured. For example, the UE may measure and calculate multiple delay path channels of each transmission point.

Step 2: The UE determines M*N=4*2 delays and/or frequency offsets. For example, for a transmission point, the UE determines the delays and/or frequency offsets of two delay path channels. For example, for a transmission point, the UE may select the delays and/or frequency offsets of the first two delay path channels in descending order of power or energy.

Step 3: The UE reports based on the determined M*N time delays and/or frequency deviations.

Solution 1: The UE reports M*N=4*2 absolute values of delay and/or frequency offset, for example, M groups of absolute values of delay D11, D12, D21, D22, D31, D32, D41, D42; and M groups of absolute values of frequency offset F11, F12, F21, F22, F31, F32, F41, F42.

Optionally, the absolute value of the delay and the absolute value of the frequency offset correspond one to one, for example, D11 corresponds to F11, representing the channel delay and frequency offset of the first transmission point respectively.

Solution 2: The UE reports a set of absolute values of reference delay and/or frequency offset, and reports M-1 groups of relative offset values relative to the absolute values of the reference delay and/or frequency offset.

For example, the absolute values of group M delays are D11, D12, D21, D22, D31, D32, D41, and D42; the absolute values of group M frequency offsets are F11, F12, F21, F22, F31, F32, F41, and F42. The UE can report D11, D12, D21-D11, D22-D12, D31-D11, D32-D12, D41-D11, and D42-D12, as well as F11, F12, F21-F11, F22-F12, F31-F11, F32-F12, F41-F11, and F42-F12.

Optionally, the absolute value of the delay and the absolute value of the frequency offset correspond one to one, for example, D11 corresponds to F11, representing the channel delay and frequency offset of the first transmission point respectively.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D31-D11 corresponds to F31-F11, which respectively represent the channel delay offset value and frequency offset offset value of the third transmission point relative to the first transmission point.

Solution 3: The UE reports the relative offset value of the M-1 group relative to the reference delay and/or frequency offset absolute value.

For example, the absolute values of the delays in group M are D11, D12, D21, D22, D31, D32, D41, and D42; the absolute values of the frequency offsets in group M are F11, F12, F21, F22, F31, F32, F41, and F42. The UE can report D21-D11, D22-D12, D31-D11, D32-D12, D41-D11, and D42-D12, as well as F21-F11, F22-F12, F31-F11, F32-F12, F41-F11, and F42-F12.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D31-D11 corresponds to F31-F11, which respectively represent the channel delay offset value and frequency offset offset value of the third transmission point relative to the first transmission point.

Solution 4: The UE reports the relative offset value of the M-1 group relative to the absolute value of the previous group's delay and/or frequency offset.

For example, the absolute values of the delays in group M are D11, D12, D21, D22, D31, D32, D41, and D42; the absolute values of the frequency offsets in group M are F11, F12, F21, F22, F31, F32, F41, and F42. The UE can report D21-D11, D22-D12, D31-D21, D32-D22, D41-D31, and D42-D32, as well as F21-F11, F22-F12, F31-F21, F32-F22, F41-F31, and F42-F32.

Optionally, the delay offset value corresponds to the frequency offset value one-to-one, for example, D31-D21 corresponds to F31-F21, which respectively represent the channel delay offset value and frequency offset offset value of the third transmission point relative to the second transmission point.

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, wherein the delay and/or frequency offset corresponding to the reference value is a reference delay and/or reference frequency offset. For example, the first group of delays/frequency offsets D11, D12, F11, and F12 are reference delays/reference frequency offsets.

The reference value can be configured by the base station, predefined, or measured and reported by the UE. For example, the reference value can be reported on the PUCCH and/or PUSCH using an M-bit bitmap. For example, reporting 1000 indicates that the first group of delays/frequency offsets D1 and F1 are the reference delays/reference frequency offsets. Alternatively, the reference value can be reported on the PUCCH and/or PUSCH using log(M) bits. For example, reporting 01 indicates that the first group of delays/frequency offsets D1 and F1 are the reference delays/reference frequency offsets.

Implementation method three:

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE identifies and measures the channels of M = 4 transmission points. For example, the UE can measure and calculate multiple delay paths for each transmission point.

Step 2: The UE determines M delays and/or frequency offsets. For example, for a transmission point, the UE determines the delay and/or frequency offset of a delay path channel. For example, for a transmission point, the UE may select the delay and/or frequency offset of a delay path channel with the highest power or energy. Alternatively, for a transmission point, the UE may determine the weighted average of the delays and/or frequency offsets of multiple delay paths.

Step 3: The UE reports based on the determined M time delays and/or frequency deviations.

Solution 1: The UE reports M=4 delay and/or frequency offset phase values.

For example, if the absolute values of M time delays are D1, D2, D3, and D4, then in the frequency band f = fc, the phase value of the i-th time delay (also The first phase information related to the time delay is:
θ(f,Di)＝exp(j2πfDi)

Where Di is the absolute value of the delay of the i-th transmission point.

The absolute values of the M frequency offsets are F1, F2, F3, and F4. Then, in the frequency band f = fc, the i-th frequency offset phase value (also called the first phase information related to the frequency offset) is:
θ(t,Fi)＝exp(j2πFit)

Wherein, Fi is the absolute value of the frequency offset of the i-th transmission point.

UE can report θ(f,D1), θ(f,D2), θ(f,D3), θ(f,D4), θ(t,F1), θ(t,F2), θ(t,F3), θ(t,F4).

Optionally, the absolute value of the delay corresponds to the absolute value of the frequency offset, and the delay phase value corresponds to the frequency offset phase value. For example, θ(f, Di) corresponds to θ(t, Fi), respectively representing the delay phase value and frequency offset phase value of the i-th transmission point.

Solution 2: The UE reports a reference delay phase value and/or a reference frequency offset phase value, and reports M-1 relative offset values relative to the reference delay phase value and/or the reference frequency offset phase value.

For example, if the absolute values of the M time delays are D1, D2, D3, and D4, then in the frequency band f = fc, the relative phase value (also called the offset value of the first phase information related to the delay) between the i-th time delay phase value and the j-th time delay phase value is:
θ(f,Dij)＝exp(j2πf(Dj-Di))

Where Di is the absolute value of the delay at the i-th transmission point, and Dj is the absolute value of the delay at the j-th transmission point.

For example, if the absolute values of the M frequency offsets are F1, F2, F3, and F4, then in the frequency band f = fc, the relative phase value (also called the offset value of the first phase information related to the frequency offset) between the i-th frequency offset phase value and the j-th frequency offset phase value is:
θ(t,Fij)＝exp(j2π(Fj-Fi)t)

Wherein, Fi is the absolute value of the frequency offset of the i-th transmission point, and Fj is the absolute value of the frequency offset of the j-th transmission point.

The UE can report θ(f,D1), θ(f,D12), θ(f,D13), θ(f,D14), θ(t,F1), θ(t,F12), θ(t,F13), θ(t,F14).

Solution 3: The UE reports M-1 relative offset values relative to the reference delay phase value and/or reference frequency offset phase value. For example, the UE can report θ(f, D12), θ(f, D13), θ(f, D14), θ(t, F12), θ(t, F13), θ(t, F14).

Solution 4: The UE reports M-1 relative offset values relative to the previous reference delay phase value and/or reference frequency offset phase value. For example, the UE can report θ(f, D12), θ(f, D23), θ(f, D34), θ(t, F12), θ(t, F23), and θ(t, F34).

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, where the delay and/or frequency offset phase value corresponding to the reference value is a reference delay phase value and/or reference frequency offset phase value. For example, the first delay and/or frequency offset phase value θ(f, D1) and θ(t, F1) is a reference delay phase value and/or reference frequency offset phase value.

The reference value may be configured by the base station, or may be predefined, or may be measured and reported by the UE. For example, the reference value may be reported by the PUCCH and/or PUSCH via an M-bit bitmap. For example, reporting 1000 indicates that the first time delay and/or frequency offset phase value θ(f, D1), θ(t, F1) is a reference time delay phase value and/or a reference frequency offset phase value. Alternatively, the reference value may be reported by the PUCCH and/or PUSCH via log(M) bits. For example, reporting 01 indicates that the first time delay and/or frequency offset phase value θ(f, D1), θ(t, F1) is a reference time delay phase value and/or a reference frequency offset phase value.

Optionally, f and t in the phase value may be configured by the base station, for example, via MAC CE and/or DCI. Alternatively, f and t in the phase value may be predefined.

Optionally, f and t in the phase value do not need to be configured, and f and t in the phase value reported by the UE are implicitly determined by the frequency and time of sending the current reference signal.

Implementation method four:

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE identifies and measures the channels of M = 4 transmission points. For example, the UE can measure and calculate multiple delay paths for each transmission point.

Step 2: The UE determines M*N=4*2 delays and/or frequency offsets. For example, for a transmission point, the UE determines the delays and/or frequency offsets of two delay path channels. For example, for a transmission point, the UE may select the delays and/or frequency offsets of the first two delay path channels in descending order of power or energy.

Step 3: The UE reports based on the determined M*N time delays and/or frequency deviations.

Solution 1: The UE reports M*N=4*2 delay and/or frequency offset phase values.

For example, if the absolute values of the delays of group M are D11, D12, D21, D22, D31, D32, D41, and D42, then in the frequency band f = fc, the ikth delay phase value (also called the first phase information related to the delay) is:
θ(f,Dik)＝exp(j2πfDik)

Where Dik is the absolute value of the kth delay of the i-th transmission point.

For the M groups of frequency offset absolute values F11, F12, F21, F22, F31, F32, F41, and F42, in the frequency band f = fc, the ikth frequency offset phase value (also called the first phase information related to the frequency offset) is:
θ(t,Fik)＝exp(j2πFikt)

Wherein, Fik is the absolute value of the kth frequency offset of the i-th transmission point.

UE can report θ(f,D11), θ(f,D12), θ(f,D21), θ(f,D22), θ(f,D31), θ(f,D32), θ(f,D41), θ(f,D4 2),θ(t,F11),θ(t,F12),θ(t,F21),θ(t,F22),θ(t,F31),θ(t,F32),θ(t,F41),θ(t,F42).

Optionally, the absolute value of the delay corresponds to the absolute value of the frequency offset, and the delay phase value corresponds to the frequency offset phase value. For example, θ(f,Dik) corresponds to θ(t,Fik), respectively representing the kth delay phase value and frequency offset phase value of the i-th transmission point.

Solution 2: The UE reports a set of reference delay phase values and/or reference frequency offset phase values, and reports M-1 sets of relative offset values relative to the reference delay phase values and/or reference frequency offset phase values.

For example, if the absolute values of the delays of the M groups are D11, D12, D21, D22, D31, D32, D41, and D42, then in the frequency band f = fc, the relative phase values (also called the offset values of the first phase information related to the delay) between the delay phase values of the i-th group and the delay phase values of the j-th group include:
θ(f,Dixjy)=exp(j2πf(Djy-Dix))

Where Dix is the absolute value of the xth delay of the i-th transmission point, and Dj is the absolute value of the yth delay of the j-th transmission point.

For example, if the absolute values of the frequency offsets of the M groups are F11, F12, F21, F22, F31, F32, F41, and F42, then in the frequency band f=fc, the relative phase values (also called the offset values of the first phase information related to the frequency offset) of the i-th group of frequency offset phase values and the j-th group of frequency offset phase values include:
θ(t,Fixjy)=exp(j2π(Fjy-Fix)t)

Wherein, Fix is the xth frequency offset absolute value of the i-th transmission point, and Fj is the yth frequency offset absolute value of the j-th transmission point.

UE can report θ(f,D11), θ(f,D12), θ(f,D1121), θ(f,D1222), θ(f,D1131), θ(f,D1232), θ(f,D1141), θ(f,D124 2),θ(f,F11),θ(f,F12),θ(f,F1121),θ(f,F1222),θ(f,F1131),θ(f,F1232),θ(f,F1141),θ(f,F1242).

Solution 3: The UE reports the relative offset values of the M-1 group relative to the reference delay phase value and/or reference frequency offset phase value. For example, the UE can report θ(f,D1121),θ(f,D1222),θ(f,D1131),θ(f,D1232),θ(f,D1141),θ(f,D1242),θ(f,F1121),θ(f,F1222),θ(f,F1131),θ(f,F1232),θ(f,F1141),θ(f,F1242).

Solution 4: The UE reports the relative offset values of the M-1 group relative to the previous group of reference delay phase values and/or reference frequency offset phase values. For example, the UE can report θ(f,D1121),θ(f,D1222),θ(f,D2131),θ(f,D2232),θ(f,D3141),θ(f,D3242),θ(f,F1121),θ(f,F1222),θ(f,F2131),θ(f,F2232),θ(f,F3141),θ(f,F3242).

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, where the delay and/or frequency offset phase value corresponding to the reference value is a reference delay phase value and/or a reference frequency offset phase value. For example, the first set of delay and/or frequency offset phase values θ(f, D1) and θ(t, F1) is a reference delay phase value and/or a reference frequency offset phase value.

The reference value may be configured by the base station, or may be predefined, or may be measured and reported by the UE. For example, the reference value may be reported by the PUCCH and/or PUSCH via an M-bit bitmap. For example, reporting 1000 indicates that the first group of time delay and/or frequency offset phase values are reference time delay phase values and/or reference frequency offset phase values. Alternatively, the reference value may be reported by the PUCCH and/or PUSCH via log(M) bits. For example, reporting 01 indicates that the first group of time delay and/or frequency offset phase values are reference time delay phase values and/or reference frequency offset phase values.

Optionally, f and t in the phase value may be configured by the base station, for example, via MAC CE and/or DCI. Alternatively, f and t in the phase value may be predefined.

Optionally, f and t in the phase value do not need to be configured, and f and t in the phase value reported by the UE are implicitly determined by the frequency and time of sending the current reference signal.

Implementation method five:

Implementation 5 differs from Implementation 3 in how the delay phase value and the frequency offset phase value are represented. In Implementation 5, the delay phase value is independent of f, and the frequency offset phase value is independent of t. Therefore, f and t need to be configured with the base station, or the UE does not need to implicitly determine f and t based on the frequency and time of the current reference signal transmission.

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE Channels of M=4 transmission points are identified and measured. For example, the UE may measure and calculate multiple delay path channels of each transmission point.

Step 2: The UE determines M delays and/or frequency offsets. For example, for a transmission point, the UE determines the delay and/or frequency offset of a delay path channel. For example, for a transmission point, the UE may select the delay and/or frequency offset of a delay path channel with the highest power or energy. Alternatively, for a transmission point, the UE may determine the weighted average of the delays and/or frequency offsets of multiple delay paths.

Step 3: The UE reports based on the determined M time delays and/or frequency deviations.

Solution 1: The UE reports M=4 delay and/or frequency offset phase values.

For example, the absolute values of M time delays are D1, D2, D3, and D4, and the i-th time delay phase value (also called the first phase information related to the time delay) is:
θ(Di)＝exp(j2πDi)

Where Di is the absolute value of the delay of the i-th transmission point.

The absolute values of the M frequency offsets are F1, F2, F3, and F4, and the i-th frequency offset phase value (also called the first phase information related to the frequency offset) is:
θ(Fi)＝exp(j2πFi)

Wherein, Fi is the absolute value of the frequency offset of the i-th transmission point.

UE can report θ(D1), θ(D2), θ(D3), θ(D4), θ(F1), θ(F2), θ(F3), θ(F4).

Optionally, the absolute value of the delay corresponds to the absolute value of the frequency offset, and the delay phase value corresponds to the frequency offset phase value. For example, θ(Di) corresponds to θ(Fi), representing the delay phase value and frequency offset phase value of the i-th transmission point, respectively.

Solution 2: The UE reports a reference delay phase value and/or a reference frequency offset phase value, and reports M-1 relative offset values relative to the reference delay phase value and/or the reference frequency offset phase value.

For example, the absolute values of M time delays are D1, D2, D3, and D4, and the relative phase value between the i-th time delay phase value and the j-th time delay phase value (also called the offset value of the first phase information related to the time delay) is:
θ(Dij)＝exp(j2π(Dj-Di))

Where Di is the absolute value of the delay at the i-th transmission point, and Dj is the absolute value of the delay at the j-th transmission point.

For example, the absolute values of the M frequency offsets are F1, F2, F3, and F4, and the relative phase value between the i-th frequency offset phase value and the j-th frequency offset phase value (also called the offset value of the first phase information related to the frequency offset) is:
θ(Fij)＝exp(j2π(Fj-Fi))

Wherein, Fi is the absolute value of the frequency offset of the i-th transmission point, and Fj is the absolute value of the frequency offset of the j-th transmission point.

UE can report θ(D1), θ(D12), θ(D13), θ(D14), θ(F1), θ(F12), θ(F13), θ(F14).

Solution 3: The UE reports M-1 relative offset values relative to the reference delay phase value and/or reference frequency offset phase value. For example, the UE may report θ(D12), θ(D13), θ(D14), θ(F12), θ(F13), θ(F14).

Solution 4: The UE reports M-1 relative offset values relative to the previous reference delay phase value and/or reference frequency offset phase value. For example, the UE may report θ(D12), θ(D23), θ(D34), θ(F12), θ(F23), and θ(F34).

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, where the delay phase value and/or frequency offset phase value corresponding to the reference value is a reference delay phase value and/or reference frequency offset phase value. For example, the first delay phase value and/or frequency offset phase value θ(D1), θ(F1) is a reference delay phase value and/or reference frequency offset phase value.

The reference value may be configured by the base station, or may be predefined, or may be measured and reported by the UE. For example, the reference value may be reported by the PUCCH and/or PUSCH via an M-bit bitmap. For example, reporting 1000 indicates the first delay phase value and/or frequency offset phase value θ(D1), and θ(F1) is the reference delay phase value and/or reference frequency offset phase value. Alternatively, the reference value may be reported by the PUCCH and/or PUSCH via log(M) bits. For example, reporting 01 indicates the first delay phase value and/or frequency offset phase value θ(D1), and θ(F1) is the reference delay phase value and/or reference frequency offset phase value.

Implementation method six:

Implementation 6 differs from Implementation 4 in the representation of the delay phase value and the frequency offset phase value. In Implementation 6, the delay phase value is independent of f, and the frequency offset phase value is independent of t. Therefore, f and t need to be configured with the base station, or the UE does not need to implicitly determine f and t based on the frequency and time of the current reference signal transmission.

Step 1: The UE reports the delay and/or frequency offset of M transmission points to the base station through CSI measurement. For example, the UE identifies and measures the channels of M = 4 transmission points. For example, the UE can measure and calculate multiple delay paths for each transmission point.

Step 2: The UE determines M*N=4*2 delays and/or frequency offsets. For example, for a transmission point, the UE determines the delays and/or frequency offsets of two delay path channels. For example, for a transmission point, the UE may select the delays and/or frequency offsets of the first two delay path channels in descending order of power or energy.

Step 3: The UE reports based on the determined M*N time delays and/or frequency deviations.

Solution 1: The UE reports M*N=4*2 delay and/or frequency offset phase values.

For example, the absolute values of the delays of group M are D11, D12, D21, D22, D31, D32, D41, and D42, and the ikth delay phase value (also called the first phase information related to the delay) is:
θ(Dik)＝exp(j2πDik)

Where Dik is the absolute value of the kth delay of the i-th transmission point.

The M groups of frequency offset absolute values F11, F12, F21, F22, F31, F32, F41, and F42, and the ikth frequency offset phase value (also called the first phase information related to the frequency offset) are:
θ(Fik)＝exp(j2πFik)

Wherein, Fik is the absolute value of the kth frequency offset of the i-th transmission point.

UE can report θ(D11), θ(D12), θ(D21), θ(D22), θ(D31), θ(D32), θ(D41), θ(D42), θ(F11), θ(F12), θ(F21), θ(F22), θ(F31), θ(F32), θ(F41), θ(F42).

Optionally, the absolute value of the delay corresponds to the absolute value of the frequency offset, and the delay phase value corresponds to the frequency offset phase value. For example, θ(Dik) corresponds to θ(Fik), respectively representing the kth delay phase value and frequency offset phase value of the i-th transmission point.

Solution 2: The UE reports a set of reference delay phase values and/or reference frequency offset phase values, and reports M-1 sets of relative offset values relative to the reference delay phase values and/or reference frequency offset phase values.

For example, the absolute values of the delays of the M groups are D11, D12, D21, D22, D31, D32, D41, and D42, and the relative phase values of the delay phase values of the i-th group and the j-th group (also called the offset values of the first phase information related to the delays) include:
θ(Dixjy)=exp(j2π(Djy-Dix))

Where Dix is the absolute value of the xth delay of the i-th transmission point, and Dj is the absolute value of the yth delay of the j-th transmission point.

For example, the M groups of frequency offset absolute values are F11, F12, F21, F22, F31, F32, F41, and F42, and the relative phase values (also called offset values of first phase information related to the frequency offset) of the i-th group of frequency offset phase values and the j-th group of frequency offset phase values include:
θ(Fixjy)=exp(j2π(Fjy-Fix))

Wherein, Fix is the xth frequency offset absolute value of the i-th transmission point, and Fj is the yth frequency offset absolute value of the j-th transmission point.

UE can report θ(D11), θ(D12), θ(D1121), θ(D1222), θ(D1131), θ(D1232), θ(D1141), θ(D124 2),θ(F11),θ(F12),θ(F1121),θ(,F1222),θ(F1131),θ(F1232),θ(F1141),θ(F1242).

Solution 3: The UE reports the relative offset values of the M-1 group relative to the reference delay phase value and/or reference frequency offset phase value. For example, the UE can report θ(D1121), θ(D1222), θ(D1131), θ(D1232), θ(D1141), θ(D1242), θ(f, F1121), θ(F1222), θ(F1131), θ(F1232), θ(F1141), and θ(F1242).

Solution 4: The UE reports the relative offset values of the M-1 group relative to the previous group of reference delay phase values and/or reference frequency offset phase values. For example, the UE can report θ(D1121), θ(D1222), θ(D2131), θ(D2232), θ(D3141), θ(D3242), θ(F1121), θ(F1222), θ(F2131), θ(F2232), θ(F3141), and θ(F3242).

Optionally, the value of M may be configured by the base station or may be implicitly obtained from the CSI-RS resource configuration. For example, the CSI-RS resource configuration may consist of M groups of CSI-RS resources.

Optionally, one of the M values is a reference value, where the delay and/or frequency offset phase value corresponding to the reference value is a reference delay phase value and/or a reference frequency offset phase value. For example, the first set of delay and/or frequency offset phase values θ(D1) and θ(F1) are reference delay phase values and/or reference frequency offset phase values.

The reference value may be configured by the base station, or may be predefined, or may be measured and reported by the UE. For example, the reference value may be reported by the PUCCH and/or PUSCH via an M-bit bitmap. For example, reporting 1000 indicates that the first group of time delay and/or frequency offset phase values are reference time delay phase values and/or reference frequency offset phase values. Alternatively, the reference value may be reported by the PUCCH and/or PUSCH via log(M) bits. For example, reporting 01 indicates that the first group of time delay and/or frequency offset phase values are reference time delay phase values and/or reference frequency offset phase values.

Implementation method seven:

In a TDD time division multiplexing system, the UE may additionally report the angle difference between the uplink and downlink channels.

For example, the UE may report the phase difference θ between the uplink and downlink channels, θ=(θ _DL -θ _UL ), or θ=(θ _UL -θ _DL ), where θ _DL is the phase value of the downlink channel response and θ _UL is the phase value of the uplink channel response.

In some embodiments, the phase difference θ of the uplink and downlink channels can be incorporated into the delay phase value/frequency offset phase value reported by the UE. For example, θ(Dij) = exp(j2π(Dj-Di)+j(|θ _DL -θ _UL |)), and/or, θ(Fij) = exp(j2π(Fj-Fi)+j(|θ _DL -θ _UL |)). The present application is not limited to this, and the phase difference θ of the uplink and downlink channels can be incorporated into the delay phase value/frequency offset phase value reported by the UE in other ways; or, the phase difference θ and the delay phase value/frequency offset phase value of the uplink and downlink channels are reported separately.

Implementation Method Eight

In some embodiments (e.g., embodiments 1 to 4), the delay information and/or frequency offset information and/or phase information may be reported via the aperiodic physical uplink shared channel after uniform quantization. The present application is not limited thereto, and the delay information and/or frequency offset information and/or phase information may be reported via the aperiodic physical uplink shared channel after non-uniform quantization.

Specifically, the CSI reporting settings can be configured by RRC configuration as CSI reportconfig ‘r19-CJT’. For example, the terminal device reporting delay information can be configured by configuring the reporting amount ‘Delay’ or ‘DelayShift’ or ‘AverageDelay’ or ‘DelaySpread’; the terminal device reporting frequency offset information can be configured by configuring the reporting amount ‘FrequencyOffset’ or ‘FrequencySpread’; the terminal device reporting delay and frequency offset information can be configured by configuring the reporting amount ‘DelayFrequencyOffset’

Alternatively, the CSI reporting settings can be configured through RRC configuration as CSI reportconfig ‘r19-CJT-TDCP’, where other RRC configuration parameters can use the ‘TDCP’ related parameters.

In some embodiments (e.g., embodiments five to six), the delay information and/or frequency offset information and/or phase information may be reported via a non-periodic physical uplink shared channel after uniform quantization (e.g., QPSK, BPSK, 16PSK, or other quantization schemes). The present application is not limited thereto, and the delay information and/or frequency offset information and/or phase information may be reported via a non-periodic physical uplink shared channel after non-uniform quantization.

Optionally, reporting can be done through the existing 2Tx, 4Tx layer 1 codebook solution.

Specifically, the CSI reporting settings can be configured through RRC configuration CSI reportconfig 'r19-CJT'. Among them, codebook is 'TypeISinglePanel', and N1, N2 are (1, 1) or (2, 1) to configure the codebook port information.

Implementation Method Nine

In some embodiments (e.g., embodiments 1 to 6), the delay information reported by the UE may include the delay deviation At least one of a delay shift and a delay spread. For example, at least one of an absolute delay offset value, a relative delay offset value, a delay offset phase value, and a relative phase value of a delay offset phase value may be reported; and/or at least one of an absolute delay spread value, a relative delay spread value, a delay spread phase value, and a relative phase value of a delay spread phase value may be reported. The terminal device can be configured to report delay offset and/or delay spread by configuring the reporting value 'Delay', 'DelayShift', 'AverageDelay', or 'DelaySpread'.

The frequency offset information reported by the UE may include at least one of a frequency offset (also known as a frequency domain offset, frequency offset) and a frequency offset spread (also known as a frequency domain spread, frequency spread). For example, at least one of an absolute frequency offset value, a relative frequency offset value, a frequency offset phase value, and a relative phase value of a frequency offset phase value may be reported; and/or at least one of an absolute frequency spread value, a relative frequency spread value, a frequency spread phase value, and a relative phase value of a frequency spread phase value may be reported. The terminal device may be configured to report frequency offset or frequency spread by configuring the reporting amount 'FrequencyOffset' or 'FrequencySpread'.

Implementation Method 10

In some embodiments (e.g., embodiments one to nine), when the CSI reporting information reported by the UE includes delay information (e.g., the reported amount information includes 'Delay' or 'DelayShift' or 'AverageDelay' or 'DelaySpread' or 'DelayFrequencyOffset'), the UE may additionally report the relationship between the delay information and the cyclic prefix (CP). Specifically, this may be reported via 1 bit in CSI part I. For example, when the value is '0', it indicates that the current delay or delay phase information does not exceed the CP; when the value is '1', it indicates that the current delay or delay phase information is equal to or greater than the CP.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

According to the above embodiment, a terminal device receives a channel state information reporting configuration from a network device, wherein the channel state information reporting configuration includes at least first measurement mode configuration information. The terminal device reports channel state information reporting information according to the channel state information reporting configuration. Thus, the terminal device can provide the network device with channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

Embodiments of the second aspect

The embodiment of the present application provides a device for reporting channel state information. The device may be, for example, a terminal device, or one or more components or assemblies configured in the terminal device. The same contents as those in the embodiment of the first aspect are not repeated here.

FIG4 is a schematic diagram of an apparatus for reporting channel state information according to an embodiment of the present application. As shown in FIG4 , an apparatus 400 for reporting channel state information includes: a receiving unit 401 and a sending unit 402 .

The receiving unit 401 receives a channel state information reporting setting from a network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; the sending unit 402 reports channel state information reporting information according to the channel state information reporting setting.

In some embodiments, the channel state information reporting setting includes reporting quantity information, and the reporting quantity information is used to indicate that the channel state information reporting information includes at least one or more of the following channel state information: delay information, frequency offset information, and phase information.

In some embodiments, the first measurement mode configuration information is configured and/or activated and/or indicated through at least one of radio resource control signaling, media access control layer control elements or downlink control information.

In some embodiments, the channel state information reporting information includes M absolute values of delay information and/or M absolute values of frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 absolute value of the first delay information and M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

1 absolute value of the first frequency offset information and M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 offset values of the second delay information, where the offset value of the second delay information is an offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

M-1 offset values of the second frequency offset information, the offset value of the second frequency offset information is the second frequency offset information The absolute value of M is an offset value relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the first time delay information is reference time delay information, and/or the first frequency offset information is reference frequency offset information.

In some embodiments, the index of the reference delay information and/or the reference frequency offset information is configured by the network device; and/or

The index of the reference delay information and/or the reference frequency offset information is predefined; and/or

The index of the reference delay information and/or the reference frequency offset information is reported by the terminal device.

In some embodiments, the first time delay information is the previous time delay information of the second time delay information, and/or the first frequency offset information is the previous frequency offset information of the second frequency offset information.

In some embodiments, the channel state information reporting information includes M delay information groups and/or M frequency deviation information groups, each delay information group includes N absolute values of delay information, and each frequency deviation information group includes N absolute values of frequency deviation information, where M and N are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 first delay information group and M-1 second delay information groups, the first delay information group includes N absolute values of the first delay information, each second delay information group includes N offset values of the second delay information, and the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information, and/or

1 first frequency offset information group and M-1 second frequency offset information groups, the first frequency offset information group includes N absolute values of the first frequency offset information, each second frequency offset information group includes N offset values of the second frequency offset information, the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, wherein N and M are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 second delay information groups, each of which includes N offset values of second delay information, where the offset value of the second delay information is an offset value of an absolute value of the second delay information relative to an absolute value of corresponding first delay information, and/or

M-1 second frequency offset information groups, each of which includes N offset values of the second frequency offset information, and the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, where N and M are integers greater than or equal to 1.

In some embodiments, the corresponding first delay information is the following information: the index of the first delay information in the first delay information group is the same as the index of the second delay information in the second delay information group; and/or,

The corresponding first frequency offset information is the following information: the index of the first frequency offset information in the first frequency offset information group is the same as the index of the second frequency offset information in the second frequency offset information group.

In some embodiments, the corresponding first delay information is the first delay information with the lowest index value in the first delay information group; and/or,

The corresponding first frequency offset information is the first frequency offset information with the lowest index value in the first frequency offset information group.

In some embodiments, the first time delay information group is a reference time delay information group, and/or the first frequency offset information group is a reference frequency offset information group.

In some embodiments, the index of the reference delay information group and/or the reference frequency offset information group is configured by the network device; and/or the index of the reference delay information group and/or the reference frequency offset information group is predefined; and/or the index of the reference delay information group and/or the reference frequency offset information group is reported by the terminal device.

In some embodiments, the first time delay information group is the previous time delay information group of the second time delay information group, and/or the first frequency offset information group is the previous frequency offset information group of the second frequency offset information group.

In some embodiments, the delay information includes delay and/or first phase information related to the delay.

In some embodiments, the frequency offset information includes the frequency offset and/or first phase information related to the frequency offset.

In some embodiments, the phase information includes phase difference information between uplink and downlink channels.

In some embodiments, the delay information and/or frequency offset information and/or phase information are uniformly quantized and reported through a non-periodic physical uplink shared channel, or the delay information and/or frequency offset information and/or phase information are non-uniformly quantized and reported through a non-periodic physical uplink shared channel.

In some embodiments, the phase information is reported in combination with the time delay information and/or the frequency offset information, or the phase information is reported separately with the time delay information and/or the frequency offset information.

In some embodiments, the M value is configured by the network device, or the M value is determined according to the channel state information reference signal resource configuration.

The above embodiments are merely exemplary descriptions of the present application, but the present application is not limited thereto, and appropriate modifications can be made based on the above embodiments. For example, the above embodiments can be used alone, One or more of the above embodiments may also be combined.

It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The apparatus 400 for reporting channel state information may also include other components or modules. For the specific contents of these components or modules, reference may be made to the relevant art.

In addition, for the sake of simplicity, FIG4 only illustrates the connection relationship or signal direction between various components or modules. However, it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers; the implementation of this application is not limited to this.

According to the above embodiment, a terminal device receives a channel state information reporting configuration from a network device, wherein the channel state information reporting configuration includes at least first measurement mode configuration information. The terminal device reports channel state information reporting information according to the channel state information reporting configuration. Thus, the terminal device can provide the network device with channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

Embodiments of the third aspect

The embodiment of the present application provides a method for receiving channel state information, which is described from the perspective of a network device. The contents that are the same as those in the embodiment of the first aspect are not repeated here.

FIG5 is a schematic diagram of a method for receiving channel state information according to an embodiment of the present application. As shown in FIG5 , the method includes:

501. The network device sends a channel state information reporting setting to the terminal device, where the channel state information reporting setting includes at least first measurement mode configuration information; and

502. The network device receives channel state information reporting information reported by the terminal device.

It is worth noting that FIG5 above is merely a schematic illustration of an embodiment of the present application, and the present application is not limited thereto. For example, the execution order of the various operations may be appropriately adjusted, and other operations may be added or some operations may be reduced. Those skilled in the art may make appropriate modifications based on the above description, and are not limited to the description of FIG5 above.

In some embodiments, the channel state information reporting setting includes reporting amount information, and the reporting amount information is used to indicate that the channel state information reporting information includes at least one or more of the following channel state information: delay information, frequency offset information, and phase information.

In some embodiments, the first measurement mode configuration information is configured and/or activated and/or indicated through at least one of radio resource control signaling, media access control layer control elements or downlink control information.

In some embodiments, the channel state information reporting information includes M absolute values of delay information and/or M absolute values of frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 absolute value of the first delay information and M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

1 absolute value of the first frequency offset information and M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 offset values of the second delay information, where the offset value of the second delay information is an offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is an offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the first time delay information is reference time delay information, and/or the first frequency offset information is reference frequency offset information.

In some embodiments, the index of the reference delay information and/or the reference frequency offset information is configured by the network device; and/or

The index of the reference delay information and/or the reference frequency offset information is predefined; and/or

The index of the reference delay information and/or the reference frequency offset information is reported by the terminal device.

In some embodiments, the first time delay information is the previous time delay information of the second time delay information, and/or the first frequency offset information is the previous frequency offset information of the second frequency offset information.

In some embodiments, the channel state information reporting information includes M delay information groups and/or M frequency deviation information groups, each delay information group includes N absolute values of delay information, and each frequency deviation information group includes N absolute values of frequency deviation information, where M and N are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 first delay information group and M-1 second delay information groups, the first delay information group includes N absolute values of the first delay information, each second delay information group includes N offset values of the second delay information, and the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information, and/or

1 first frequency offset information group and M-1 second frequency offset information groups, the first frequency offset information group includes N absolute values of the first frequency offset information, each second frequency offset information group includes N offset values of the second frequency offset information, the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, wherein N and M are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 second delay information groups, each of which includes N offset values of second delay information, where the offset value of the second delay information is an offset value of an absolute value of the second delay information relative to an absolute value of corresponding first delay information, and/or

M-1 second frequency offset information groups, each of which includes N offset values of the second frequency offset information, and the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, where N and M are integers greater than or equal to 1.

In some embodiments, the corresponding first delay information is the following information: the index of the first delay information in the first delay information group is the same as the index of the second delay information in the second delay information group; and/or,

The corresponding first frequency offset information is the following information: the index of the first frequency offset information in the first frequency offset information group is the same as the index of the second frequency offset information in the second frequency offset information group.

In some embodiments, the corresponding first delay information is the first delay information with the lowest index value in the first delay information group; and/or,

The corresponding first frequency offset information is the first frequency offset information with the lowest index value in the first frequency offset information group.

In some embodiments, the first time delay information group is a reference time delay information group, and/or the first frequency offset information group is a reference frequency offset information group.

In some embodiments, the index of the reference delay information group and/or the reference frequency offset information group is determined by Network device configuration; and/or the index of the reference delay information group and/or the reference frequency offset information group is predefined; and/or the index of the reference delay information group and/or the reference frequency offset information group is reported by the terminal device.

In some embodiments, the first time delay information group is the previous time delay information group of the second time delay information group, and/or the first frequency offset information group is the previous frequency offset information group of the second frequency offset information group.

In some embodiments, the delay information includes delay and/or first phase information related to the delay.

In some embodiments, the frequency offset information includes the frequency offset and/or first phase information related to the frequency offset.

In some embodiments, the phase information includes phase difference information between uplink and downlink channels.

In some embodiments, the delay information and/or frequency offset information and/or phase information are uniformly quantized and reported through a non-periodic physical uplink shared channel, or the delay information and/or frequency offset information and/or phase information are non-uniformly quantized and reported through a non-periodic physical uplink shared channel.

In some embodiments, the phase information is reported in combination with the time delay information and/or the frequency offset information, or the phase information is reported separately with the time delay and/or the frequency offset information.

In some embodiments, the M value is configured by the network device, or the M value is determined according to the channel state information reference signal resource configuration.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

According to the above embodiment, the network device sends a channel state information reporting configuration to the terminal device, where the channel state information reporting configuration includes at least first measurement mode configuration information, and the network device receives the channel state information reporting information sent by the terminal device. This enables the network device to obtain the channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

Embodiments of the fourth aspect

The embodiment of the present application provides a device for receiving channel state information. The device may be, for example, a network device, or one or more components or assemblies configured in the network device. The contents that are the same as those in the embodiment of the third aspect are not repeated here.

FIG6 is a schematic diagram of an apparatus for receiving channel state information according to an embodiment of the present application. As shown in FIG6 , an apparatus 600 for receiving channel state information includes: a sending unit 601 and a receiving unit 602 .

The sending unit 601 sends a channel state information reporting setting to the terminal device, where the channel state information reporting setting includes at least first measurement mode configuration information; the receiving unit 602 receives the channel state information reporting information reported by the terminal device.

In some embodiments, the channel state information reporting setting includes reporting quantity information, and the reporting quantity information is used to indicate that the channel state information reporting information includes at least one or more of the following channel state information: delay information, frequency offset information, and phase information.

In some embodiments, the first measurement mode configuration information is configured and/or activated and/or indicated through at least one of radio resource control signaling, media access control layer control elements or downlink control information.

In some embodiments, the channel state information reporting information includes M absolute values of delay information and/or M absolute values of frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 absolute value of the first delay information and M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

1 absolute value of the first frequency offset information and M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 offset values of the second delay information, where the offset value of the second delay information is an offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or

M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is an offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1.

In some embodiments, the first time delay information is reference time delay information, and/or the first frequency offset information is reference frequency offset information.

In some embodiments, the index of the reference delay information and/or the reference frequency offset information is configured by the network device; and/or

The index of the reference delay information and/or the reference frequency offset information is predefined; and/or

The index of the reference delay information and/or the reference frequency offset information is reported by the terminal device.

In some embodiments, the first time delay information is the previous time delay information of the second time delay information, and/or the first frequency offset information is the previous frequency offset information of the second frequency offset information.

In some embodiments, the channel state information reporting information includes M delay information groups and/or M frequency deviation information groups, each delay information group includes N absolute values of delay information, and each frequency deviation information group includes N absolute values of frequency deviation information, where M and N are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

1 first delay information group and M-1 second delay information groups, the first delay information group includes N absolute values of the first delay information, each second delay information group includes N offset values of the second delay information, and the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information, and/or

1 first frequency offset information group and M-1 second frequency offset information groups, the first frequency offset information group includes N absolute values of the first frequency offset information, each second frequency offset information group includes N offset values of the second frequency offset information, the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, wherein N and M are integers greater than or equal to 1.

In some embodiments, the channel state information reporting information includes:

M-1 second delay information groups, each of which includes N offset values of second delay information, where the offset value of the second delay information is an offset value of an absolute value of the second delay information relative to an absolute value of corresponding first delay information, and/or

M-1 second frequency offset information groups, each of which includes N offset values of the second frequency offset information, and the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, where N and M are integers greater than or equal to 1.

In some embodiments, the corresponding first delay information is the following information: the index of the first delay information in the first delay information group is the same as the index of the second delay information in the second delay information group; and/or,

The corresponding first frequency offset information is the following information: the index of the first frequency offset information in the first frequency offset information group is the same as the index of the second frequency offset information in the second frequency offset information group.

In some embodiments, the corresponding first delay information is the first delay information with the lowest index value in the first delay information group; and/or,

The corresponding first frequency offset information is the first frequency offset information with the lowest index value in the first frequency offset information group.

In some embodiments, the first time delay information group is a reference time delay information group, and/or the first frequency offset information group is a reference frequency offset information group.

In some embodiments, the index of the reference delay information group and/or the reference frequency offset information group is configured by the network device; and/or the index of the reference delay information group and/or the reference frequency offset information group is predefined; and/or the index of the reference delay information group and/or the reference frequency offset information group is reported by the terminal device.

In some embodiments, the first time delay information group is the previous time delay information group of the second time delay information group, and/or the first frequency offset information group is the previous frequency offset information group of the second frequency offset information group.

In some embodiments, the delay information includes delay and/or first phase information related to the delay.

In some embodiments, the frequency offset information includes the frequency offset and/or first phase information related to the frequency offset.

In some embodiments, the phase information includes phase difference information between uplink and downlink channels.

In some embodiments, the delay information and/or frequency offset information and/or phase information are uniformly quantized and reported through a non-periodic physical uplink shared channel, or the delay information and/or frequency offset information and/or phase information are non-uniformly quantized and reported through a non-periodic physical uplink shared channel.

In some embodiments, the phase information is reported in combination with the time delay information and/or the frequency offset information, or the phase information is reported separately with the time delay and/or the frequency offset information.

In some embodiments, the M value is configured by the network device, or the M value is determined according to the channel state information reference signal resource configuration.

The above embodiments are merely exemplary of the present invention, but the present invention is not limited thereto. Appropriate modifications may be made based on the above embodiments. For example, the above embodiments may be used alone, or one or more of the above embodiments may be combined.

It is worth noting that the above description only describes the components or modules related to the present application, but the present application is not limited thereto. The apparatus 600 for receiving channel state information may also include other components or modules. For details of these components or modules, reference may be made to related technologies.

In addition, for the sake of simplicity, FIG6 only illustrates the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, and receivers. Now; the implementation of this application does not limit this.

According to the above embodiment, the network device sends a channel state information reporting configuration to the terminal device, where the channel state information reporting configuration includes at least first measurement mode configuration information, and the network device receives the channel state information reporting information sent by the terminal device. This enables the network device to obtain the channel state information reporting information in the first measurement mode, thereby improving transmission efficiency, enhancing data transmission performance, and increasing single-user and overall network throughput.

Embodiments of the fifth aspect

An embodiment of the present application also provides a communication system, and reference may be made to FIG1 . The contents that are the same as those in the embodiments of the first to fourth aspects will not be repeated.

In some implementations, the communication system 100 may include at least: a network device and a terminal device. The network device sends a channel state information reporting setting, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and the terminal device receives the channel state information reporting setting and reports channel state information reporting information based on multi-point joint transmission according to the channel state information reporting setting.

An embodiment of the present application further provides a network device, which may be, for example, a base station, but the present application is not limited thereto and may also be other network devices.

Figure 7 is a schematic diagram illustrating the structure of a network device according to an embodiment of the present application. As shown in Figure 7, network device 700 may include a processor 710 (e.g., a central processing unit (CPU)) and a memory 720; memory 720 is coupled to processor 710. Memory 720 may store various data and may also store an information processing program 730, which is executed under the control of processor 710.

For example, the processor 710 may be configured to execute a program to implement the operation of the network device in the method according to the embodiment of the third aspect. For example, the processor 710 may be configured to perform the following control: the network device sends a channel state information reporting setting to the terminal device, where the channel state information reporting setting includes at least first measurement mode configuration information; and the network device receives the channel state information reporting information reported by the terminal device.

In addition, as shown in FIG7 , network device 700 may further include: a transceiver 740 and an antenna 750, etc.; wherein, the functions of the above components are similar to those in the related art and are not further described here. It is worth noting that network device 700 does not necessarily include all the components shown in FIG7 ; in addition, network device 700 may also include components not shown in FIG7 , and reference may be made to the related art for details.

The embodiment of the present application also provides a terminal device, but the present application is not limited thereto and may also be other devices.

Figure 8 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in Figure 8 , terminal device 800 may include a processor 810 and a memory 820. Memory 820 stores data and programs and is coupled to processor 810. It should be noted that this diagram is exemplary; other types of structures may be used to supplement or replace this structure to implement telecommunication or other functions.

For example, the processor 810 may be configured to execute a program to implement the method according to the embodiment of the first aspect. For example, the processor 810 may be configured to perform the following control: the terminal device receives a channel state information reporting setting from the network device, where the channel state information reporting setting includes at least first measurement mode configuration information; and the terminal device reports the channel state information reporting information according to the channel state information reporting setting.

As shown in Figure 8 , the terminal device 800 may further include: a communication module 830, an input unit 840, a display 850, and a power supply 860. The functions of these components are similar to those in the related art and are not described in detail here. It is worth noting that the terminal device 800 does not necessarily include all of the components shown in Figure 8 , and the above components are not essential. Furthermore, the terminal device 800 may also include components not shown in Figure 8 , for which reference may be made to the related art.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a terminal device, the program causes the terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a terminal device to execute the method described in the embodiment of the first aspect.

An embodiment of the present application further provides a computer program, wherein when the program is executed in a network device, the program causes the network device to execute the method described in the embodiment of the third aspect.

An embodiment of the present application further provides a storage medium storing a computer program, wherein the computer program enables a network device to execute the method described in the embodiment of the third aspect.

The above devices and methods of the present application can be implemented by hardware or by a combination of hardware and software. The present application relates to such a computer-readable program that, when executed by a logic component, enables the logic component to implement the devices or components described above, or enables the logic component to implement the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

The methods/devices described in conjunction with the embodiments of the present application may be directly embodied as hardware, software modules executed by a processor, or a combination of the two. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of functional block diagrams may correspond to various software modules of a computer program flow, or may correspond to various hardware modules. These software modules may correspond to the steps shown in the figure. These hardware modules may be implemented by solidifying these software modules using, for example, a field programmable gate array (FPGA).

The software module may be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to a processor so that the processor can read information from the storage medium and write information to the storage medium; or the storage medium may be an integral part of the processor. The processor and the storage medium may be located in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) uses a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large-capacity flash memory device.

One or more of the functional blocks and/or one or more combinations of functional blocks described in the accompanying drawings may be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or any appropriate combination thereof for performing the functions described in this application. One or more of the functional blocks and/or one or more combinations of functional blocks described in the accompanying drawings may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application has been described above in conjunction with specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present application. Those skilled in the art may make various modifications and variations to the present application based on the spirit and principles of the present application, and such modifications and variations are also within the scope of the present application.

Regarding the implementation methods including the above embodiments, the following additional notes are also disclosed:

1. A signal processing method, applied to a terminal device, comprising:

The terminal device receives a channel state information reporting setting from the network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and

The terminal device reports the channel state information reporting information according to the channel state information reporting setting.

2. A signal processing method, applied to a network device, comprising:

The network device sends the channel status information reporting setting to the terminal device, wherein the channel status information reporting setting At least includes first measurement mode configuration information; and

The network device receives the channel state information reporting information reported by the terminal device.

3. A terminal device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method described in Note 1.

4. A network device comprising a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the computer program to implement the method as described in Note 2.

5. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the terminal device executes the method as described in Note 1.

6. A computer program product, comprising at least a computer program, wherein when the computer program is executed by a processor, the network device executes the method as described in Note 2.

Claims (20)

A device for reporting channel state information, configured in a terminal device, comprising: a receiving unit configured to receive a channel state information reporting setting from a network device, wherein the channel state information reporting setting includes at least first measurement mode configuration information; and A sending unit is configured to report channel state information reporting information according to the channel state information reporting configuration. The device according to claim 1, wherein The channel state information reporting setting includes reporting amount information, and the reporting amount information is used to indicate that the channel state information reporting information includes at least one or more of the following channel state information: delay information, frequency offset information, and phase information. The device according to claim 2, wherein The first measurement mode configuration information is configured and/or activated and/or indicated through at least one of radio resource control signaling, media access control layer control elements or downlink control information. The device according to claim 1, wherein The channel state information reporting information includes M absolute values of delay information and/or M absolute values of frequency offset information, where M is an integer greater than or equal to 1. The apparatus according to claim 1, wherein the channel state information reporting information comprises: 1 absolute value of the first delay information and M-1 offset values of the second delay information, where the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or 1 absolute value of the first frequency offset information and M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1. The apparatus according to claim 1, wherein the channel state information reporting information comprises: M-1 offset values of the second delay information, where the offset value of the second delay information is an offset value of the absolute value of the second delay information relative to the absolute value of the first delay information, and/or M-1 offset values of the second frequency offset information, where the offset value of the second frequency offset information is an offset value of the absolute value of the second frequency offset information relative to the absolute value of the first frequency offset information, where M is an integer greater than or equal to 1. The device according to claim 6, wherein The first time delay information is reference time delay information, and/or the first frequency offset information is reference frequency offset information. The device according to claim 7, wherein The index of the reference delay information and/or the reference frequency offset information is configured by the network device; and/or The index of the reference delay information and/or the reference frequency offset information is predefined; and/or The index of the reference delay information and/or the reference frequency offset information is reported by the terminal device. The device according to claim 6, wherein The first time delay information is the previous time delay information of the second time delay information, and/or the first frequency offset information is the previous frequency offset information of the second frequency offset information. The device according to claim 1, wherein The channel state information reporting information includes M delay information groups and/or M frequency offset information groups, each delay information group includes N absolute values of delay information, and each frequency offset information group includes N absolute values of frequency offset information, where M and N are integers greater than or equal to 1. The apparatus according to claim 1, wherein the channel state information reporting information comprises: 1 first delay information group and M-1 second delay information groups, the first delay information group includes N absolute values of the first delay information, each second delay information group includes N offset values of the second delay information, and the offset value of the second delay information is the offset value of the absolute value of the second delay information relative to the absolute value of the corresponding first delay information, and/or 1 first frequency offset information group and M-1 second frequency offset information groups, the first frequency offset information group includes N absolute values of the first frequency offset information, each second frequency offset information group includes N offset values of the second frequency offset information, the offset value of the second frequency offset information is the offset value of the absolute value of the second frequency offset information relative to the absolute value of the corresponding first frequency offset information, wherein N and M are integers greater than or equal to 1. The apparatus according to claim 1, wherein the channel state information reporting information comprises: M-1 second delay information groups, each of which includes N offset values of second delay information, where the offset value of the second delay information is an offset value of an absolute value of the second delay information relative to an absolute value of corresponding first delay information in the first delay information group, and/or M-1 second frequency offset information groups, each of which includes N offset values of the second frequency offset information, and the offset value of the second frequency offset information is the absolute value of the second frequency offset information relative to the first frequency offset information. The offset value of the absolute value of the corresponding first frequency offset information in the group, where N and M are integers greater than or equal to 1. The device according to claim 11 or 12, wherein The corresponding first delay information is the following information: the index of the first delay information in the first delay information group is the same as the index of the second delay information in the second delay information group; and/or, The corresponding first frequency offset information is the following information: the index of the first frequency offset information in the first frequency offset information group is the same as the index of the second frequency offset information in the second frequency offset information group. The device according to claim 11 or 12, wherein The corresponding first delay information is the first delay information with the lowest index value in the first delay information group; and/or, The corresponding first frequency offset information is the first frequency offset information with the lowest index value in the first frequency offset information group. The device according to claim 12, wherein The first time delay information group is a reference time delay information group, and/or the first frequency offset information group is a reference frequency offset information group. The device according to claim 15, wherein The index of the reference delay information group and/or the reference frequency offset information group is configured by the network device; and/or The index of the reference time delay information group and/or the reference frequency offset information group is predefined; and/or The index of the reference delay information group and/or the reference frequency offset information group is reported by the terminal device. The device according to claim 12, wherein The first time delay information group is a previous time delay information group of the second time delay information group, and/or the first frequency offset information group is a previous frequency offset information group of the second frequency offset information group. The device according to claim 2, wherein The delay information includes the delay and/or first phase information related to the delay; and/or The frequency deviation information includes the frequency deviation and/or first phase information related to the frequency deviation; and/or The phase information includes phase difference information of uplink and downlink channels; and/or The time delay information and/or frequency offset information and/or phase information are uniformly quantized and shared through a non-periodic physical uplink. Channel reporting, or the delay information and/or frequency offset information and/or phase information are non-uniformly quantized and reported through a non-periodic physical uplink shared channel. The device according to any one of claims 4, 5, 6, 10, 11 and 12, wherein The M value is configured by the network device, or the M value is determined according to the channel state information reference signal resource configuration. A communication system includes a network device and a terminal device, wherein: The network device sends a channel state information reporting setting, wherein the channel state information reporting setting includes at least first measurement mode configuration information; The terminal device receives the channel state information reporting setting, and reports the channel state information reporting information based on multi-point joint transmission according to the channel state information reporting setting.