Communication method, communication system, electronic device, and related apparatus

Abstract

The communication method, the communication system, the electronic device and the related device provided by the embodiments of the present application relate to the technical field of terminals. In the communication method, the terminal device can receive first information from the network device. The first information is used to indicate the period of reporting CSI by the terminal device. The period indicated by the first information can be determined by the network device based on the CSI reported by the terminal device. The terminal device reports the CSI according to the period indicated by the first information. The period indicated by the first information is determined based on the CSI reported by the terminal device, which can dynamically adjust the reporting period of the terminal device reporting the CSI based on the change of the channel state. In this way, the probability of the deterioration of the communication quality caused by the mismatch between the system parameters and the real channel state can be reduced.

Description

Technical Field

[0001] This application relates to the field of terminal technology, and in particular to a communication method, communication system, electronic device and related apparatus. Background Technology

[0002] In mobile communication systems, network devices can adjust system parameters based on channel state information (CSI) reported by terminal devices to schedule and / or manage beams of terminal devices using accurate system parameters, thereby optimizing the performance of the wireless communication link between network devices and terminal devices.

[0003] In some implementations, terminal devices can periodically report CSI to network devices, enabling network devices to periodically obtain the latest channel status and adjust system parameters in a timely manner to achieve efficient and reliable wireless communication.

[0004] However, when network devices adjust system parameters based on the acquired CSI, there may be a situation where communication quality continues to deteriorate. Summary of the Invention

[0005] This application provides a communication method, communication system, electronic device, and related apparatus, applicable to the field of terminal technology. It can reduce the probability of communication quality degradation.

[0006] In a first aspect, embodiments of this application propose a communication method, the method comprising: receiving first information, the first information being used to indicate the period for a terminal device to report channel state information, the period being determined based on the channel state information reported by the terminal device; and transmitting channel state information according to the period.

[0007] For example, the first information could be Figures 1-7 The DCI used to indicate the period or the DCI containing the report configuration identifier in the illustrated embodiment, for example... Figures 1-7 The first DCI or the second DCI in the illustrated embodiment. The period can be... Figures 1-7 The cycle or reporting cycle in the illustrated embodiment, for example Figures 1-7 The illustrated embodiment represents either a first cycle or a second cycle. The terminal device can be... Figures 1-7 The terminal device or UE in the illustrated embodiment. Channel state information may be... Figures 1-7 Channel state information, CSI, or CSI report in the illustrated embodiment.

[0008] For the specific implementation principle of this embodiment, please refer to [link / reference]. Figure 1For the specific implementation principle of the embodiment shown, please refer to the specific implementation principle of S201-S203, S202-S203, and S204-S205.

[0009] In this way, the period for terminal devices to report Channel State Information (CSI) is determined based on the CSI reported by the terminal devices. This allows the CSI reporting period to vary with changes in CSI. For example, in scenarios where the channel state changes rapidly, higher-frequency CSI reporting allows network devices to acquire CSI more frequently and adjust system parameters more frequently, thereby reducing the probability of communication quality degradation between network devices and terminal devices due to a mismatch between system parameters and the actual channel state. Conversely, in scenarios where the channel state is relatively stable, lower-frequency CSI reporting reduces CSI reporting overhead, thus reducing the probability of decreased communication efficiency between network devices and terminal devices due to high-frequency CSI reporting.

[0010] In one possible implementation, the channel state information includes channel quality parameters. When the channel quality parameters are greater than or equal to a first threshold, or when the terminal device completes a Radio Resource Control (RRC) connection, the period indicated by the first information is a first period. Alternatively, when the channel quality parameters are less than the first threshold and the channel quality parameters are greater than or equal to a second threshold, the period indicated by the first information is a second period. The second period is shorter than the first period.

[0011] For example, the channel quality parameter can be Figures 1-7 The channel quality parameters in the illustrated embodiment. The first threshold can be... Figures 1-7 The first threshold (e.g., C) in the illustrated embodiment dg The first cycle could be... Figures 1-7 The first period (T) in the illustrated embodiment rg The second threshold can be... Figures 1-7 The second threshold (such as C) in the illustrated embodiment fb The second cycle could be... Figures 1-7 The second period (T) in the illustrated embodiment dg ).

[0012] When the channel quality parameter is greater than or equal to the first threshold, or when the terminal device completes a Radio Resource Control (RRC) connection, the specific implementation of the first information indication of the first cycle can be found in the specific implementation principles of S202-S203, or S201-S203. When the channel quality parameter is less than the first threshold and the channel quality parameter is greater than or equal to the second threshold, the specific implementation of the first information indication of the second cycle can be found in the specific implementation principles of S204-S205.

[0013] In this way, if the channel quality parameter is greater than or equal to the first threshold, it can be said that the channel state is relatively stable and / or the channel quality is good. The terminal device can periodically report CSI according to the first cycle to realize the monitoring of the channel state according to the first cycle.

[0014] If the channel quality parameter is below the first threshold but greater than or equal to the second threshold, it indicates a rapid change in channel state. However, the channel state can be improved by adjusting system parameters. Terminal devices can periodically report CSI at a shorter second interval than the first, acquiring CSI at a higher frequency. This allows network devices to acquire CSI more frequently when the channel state changes rapidly, enabling them to monitor the channel state and adjust system parameters accordingly. This, in turn, reduces the probability of communication quality degradation between network devices and terminal devices due to a mismatch between system parameters and the actual channel state.

[0015] In one possible implementation, the second period is determined based on the first period and channel quality parameters.

[0016] In this way, CSI reporting or channel status monitoring can be performed by using the first period as a reference and adjusting or selecting a shorter period than the first period based on channel quality parameters.

[0017] In one possible implementation, the second cycle Satisfying the formula:

[0018]

[0019] Where A1, A2, and A3 are all preset period coefficients. It is a dynamic adjustment coefficient used for periodic adjustment. It is determined based on channel quality parameters. For the first cycle, The third threshold, This is the fourth threshold.

[0020] In this way, a piecewise function is used to map the continuous dynamic adjustment coefficient β to a discrete period, thereby realizing the adjustment of the period based on the dynamic adjustment coefficient β. It is determined based on channel quality parameters, thereby enabling dynamic adjustment of the cycle based on channel quality parameters. The cycle is the CSI reporting cycle.

[0021] In one possible implementation, the dynamic adjustment coefficient Satisfying the formula:

[0022]

[0023] in, Indicates taking and The maximum value in, Indicates taking and The minimum value in, The first boundary minimum value is preset. The preset second boundary minimum value, For channel quality parameters, The first threshold is preset. The second preset threshold, The preset dynamic response rate adjustment factor, The preset benchmark adjustment coefficient, , .

[0024] so, , It is possible to achieve a period smaller than the first period based on a dynamic adjustment coefficient β. Second boundary minimum. This can be called the boundary protection upper limit, which allows the emergency period (such as the second period) to be shorter than the normal period (such as the first period). This reduces the probability of insufficient channel state monitoring when channel states change rapidly, and thus reduces the probability of communication quality degradation due to insufficient monitoring. The first boundary minimum value. This can be called the lower limit of boundary protection, and can be used to reduce the probability of excessive computational load on terminal devices and / or uplink resource conflicts caused by excessively short CSI report reporting cycles. For example, excessively short reporting cycles... Uplink resources include PUCCH and / or PUSCH resources.

[0025] In one possible implementation, the second cycle Satisfying the formula:

[0026]

[0027] in, This is a dynamic adjustment coefficient. This is the first cycle.

[0028] In this way, the adjustment period can be adjusted based on the dynamic adjustment coefficient β. It is determined based on channel quality parameters, thereby enabling dynamic adjustment of the cycle based on channel quality parameters.

[0029] In one possible implementation, the channel quality parameter is a measurement result of channel state information type x obtained based on the channel state information reference signal. Or, for the measurement error of the measurement result using channel state information type x. The corrected result obtained by making corrections Corrected result Satisfying the formula:

[0030]

[0031] in, Indicates measurement results The weight, Indicates measurement error The weight, where x is the CSI information type. The measurement error is for CSI information type x.

[0032] Thus, when the terminal device's CSI measurement accuracy is high, the CSI reporting period can be adjusted based on the measurement results to obtain accurate channel state information and, consequently, an accurate reporting period. This reduces the probability of mismatched system parameters due to an inappropriate reporting period, which in turn reduces the probability of communication quality degradation. Conversely, when the terminal device's CSI measurement accuracy is low, using measurement error correction to obtain measurement results yields more accurate channel state information and, consequently, a more accurate reporting period, further reducing the probability of communication quality degradation.

[0033] In one possible implementation, the channel state information type x is any one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Signal-to-Interference-Noise Ratio (SINR), Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), or Spatial Packet and Channel Similarity (SGCS).

[0034] This allows for the determination of the reporting period based on any one of CQI, PMI, RI, SINR, RSRP, RSRQ, or Spatial Packet and Channel Similarity (SGCS). This expands the application scope or scenarios of the communication method provided in the embodiments of this application.

[0035] In one possible implementation, the measurement error is the normalized mean square error (MSE). MSE is a performance metric used in statistics and signal processing, which allows for accurate measurement error assessment, thereby reducing the probability of inaccurate corrected results due to inaccurate measurement errors.

[0036] In one possible implementation, the channel state information includes channel quality parameters. The method further includes receiving second information, which instructs the terminal device to terminate reporting channel state information, wherein the second information is received if the channel quality parameters reported by the terminal device are less than a second threshold.

[0037] For example, the second information could be Figures 2-7 The third DCI in the illustrated embodiment. The specific implementation principle of this embodiment can be found in the specific implementation principle shown in S206, and will not be repeated here.

[0038] Thus, if the channel quality parameter is less than the second threshold, it indicates that adjusting system parameters cannot improve the channel state. When the channel quality parameter is less than the second threshold, the terminal device stops reporting channel state information to terminate channel state monitoring. A channel quality parameter less than the second threshold can also indicate a poor channel state. In a poor channel state, the communication quality between the network device and the terminal device is poor, or the communication between the network device and the terminal device is invalid. Terminating the reporting of channel state information by the terminal device in a poor channel state reduces the occupation of communication resources by invalid communication, thereby improving the effective utilization rate of communication resources.

[0039] In one possible implementation, the second information is received when the channel quality parameters reported by the terminal device k times consecutively are all less than the second threshold, where k is an integer and k is greater than or equal to the fifth threshold.

[0040] For example, the fifth threshold can be Figure 2 The preset N2 in the embodiment. For the specific implementation principle of this embodiment, please refer to S206 where gNB continuously detects C≥C. dg The specific implementation principle of network devices (such as gNB) sending deactivation commands to terminal devices when the number of times is greater than or equal to N2 is not elaborated here.

[0041] In this way, if the channel quality parameters reported by the terminal device k consecutive times are all less than the second threshold, and k is greater than or equal to the fifth threshold, it can be indicated that the channel state remains poor. Terminating CSI reporting by the terminal device can reduce the occupation of communication resources by invalid communication.

[0042] In one possible implementation, the first information includes a period identifier for indicating the period. Before receiving the first information, the method further includes receiving configuration information, which includes a correspondence between the period identifier and the period.

[0043] For example, the periodic identifier can be Figures 2-7 The period identifier or report configuration identifier (report config ID) in the illustrated embodiment can be configured as follows: Figures 2-7 The configuration information (or CSI configuration information) in the illustrated embodiment. The correspondence between the period identifier and the period can be... Figure 2 The embodiments shown illustrate the correspondence between period identifiers and periods in the period set, such as the correspondence between report configuration identifiers and report time slot configurations shown in Table 1.

[0044] In this way, the correspondence between the period identifier and the period can be configured before receiving the first information, so that when the first information carries the period identifier, the period for reporting CSI can be determined based on the period identifier.

[0045] Secondly, embodiments of this application propose a communication method, the method comprising: sending first information, the first information being used to indicate the period for a terminal device to report channel state information, the period being determined based on the channel state information reported by the terminal device; and receiving channel state information sent by the terminal device according to the period.

[0046] For the specific implementation principle of this embodiment, please refer to [link / reference]. Figure 1 The specific implementation principle of the illustrated embodiment can also be found in the specific implementation principles of S201-S203, S202-S203, and S204-S205. The executing entity of this embodiment can be a network device. For example, a network device... Figures 1-7 The network device or gNB in ​​the illustrated embodiment.

[0047] Thus, the period for the first information indication (CI) is determined based on the CSI reported by the terminal device. This allows the CSI reporting period to vary with changes in the CSI. For example, in scenarios with rapidly changing channel conditions, higher CSI reporting frequencies enable network devices to acquire CSI more frequently and adjust system parameters accordingly, reducing the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel conditions. Conversely, in scenarios with relatively stable channel conditions, lower CSI reporting frequencies reduce CSI reporting overhead, thereby reducing the probability of decreased communication efficiency between network devices and terminal devices due to high-frequency CSI reporting.

[0048] In one possible implementation, the channel state information includes channel quality parameters. When the channel quality parameters are greater than or equal to a first threshold, or when the terminal device completes a radio resource control connection, the period indicated by the first information is a first period. Alternatively, when the channel quality parameters are less than the first threshold and greater than or equal to a second threshold, the period indicated by the first information is a second period. The second period is shorter than the first period.

[0049] This allows terminal devices to periodically report CSI according to a first cycle when the channel state is relatively stable and / or the channel quality is good, thus monitoring the channel state on a first-cycle basis. When the channel state changes rapidly, but can be improved by adjusting system parameters, the terminal device can periodically report CSI according to a second cycle, which is shorter than the first cycle, acquiring CSI at a higher frequency. This enables network devices to acquire CSI more frequently when the channel state changes rapidly, allowing for monitoring of the channel state and adjustments to system parameters. This, in turn, reduces the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel state.

[0050] In one possible implementation, the second period is determined based on the first period and channel quality parameters. This allows for CSI reporting or channel state monitoring to be performed with the first period as a reference, adjusted based on channel quality parameters, or by selecting a period shorter than the first period.

[0051] In one possible implementation, the channel state information includes channel quality parameters. The method further includes sending second information, which instructs the terminal device to terminate reporting channel state information, wherein the second information is sent if the channel quality parameters reported by the terminal device are less than a second threshold.

[0052] Thus, a channel quality parameter below the second threshold indicates that adjusting system parameters cannot improve the channel state. It also indicates a poor channel state. In a poor channel state, the communication quality between network devices and terminal devices is poor, or the communication is invalid. When the channel quality parameter is below the second threshold, sending a second message causes the terminal device to stop reporting channel state information, thereby terminating channel state monitoring. This reduces the consumption of communication resources by invalid communication, and thus improves the effective utilization of communication resources.

[0053] In one possible implementation, the second information is sent when the channel quality parameters reported by the terminal device k times consecutively are all less than the second threshold, where k is an integer and k is greater than or equal to the fifth threshold.

[0054] In this way, if the channel quality parameters reported by the terminal device k consecutive times are all less than the second threshold, and k is greater than or equal to the fifth threshold, it can be indicated that the channel state remains poor. The network device can reduce the occupation of communication resources by sending a second message to the terminal device to terminate the terminal device's CSI reporting.

[0055] In one possible implementation, the first information includes a period identifier for indicating the period. Before sending the first information, the method further includes sending configuration information, which includes a correspondence between the period identifier and the period.

[0056] In this way, the terminal device can be instructed to configure the correspondence between the period identifier and the period before sending the first information, so that when the first information is sent carrying the period identifier, the terminal device can easily determine the period for reporting CSI based on the period identifier.

[0057] Thirdly, embodiments of this application propose a communication system, including: a network device and a terminal device, wherein the terminal device is used to execute the method described in the first aspect or any possible implementation of the first aspect, and the network device is used to execute the method described in the second aspect or any possible implementation of the second aspect.

[0058] For example, a network device can be Figures 1-7 The network device in the illustrated embodiment is, for example, a gNB. The terminal device may be... Figures 1-7 The terminal device in the illustrated embodiment, such as a UE.

[0059] This allows for determining the CSI reporting cycle based on channel state information, which can reduce the probability of communication quality degradation.

[0060] Fourthly, embodiments of this application provide a communication device, which may be an electronic device, or a chip or chip system within an electronic device. The communication device may include a display unit and a processing unit. When the communication device is an electronic device, the display unit may be a display screen. The display unit is used to perform display steps to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. When the communication device is an electronic device, the processing unit may be a processor. The communication device may further include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. When the communication device is a chip or chip system within an electronic device, the processing unit may be a processor. The processing unit executes the instructions stored in the storage unit to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. The storage unit can be a storage unit inside the chip (e.g., a register, cache, etc.) or a storage unit located outside the chip within the electronic device (e.g., a read-only memory, random access memory, etc.).

[0061] Fifthly, embodiments of this application provide an electronic device including a processor and a memory, wherein the memory is used to store computer execution instructions, and the processor is used to run the computer execution instructions stored in the memory to perform the methods described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect.

[0062] Sixthly, embodiments of this application provide a computer-readable storage medium storing a computer program or instructions that, when executed on a computer, cause the computer to perform the methods described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect.

[0063] In a seventh aspect, embodiments of this application provide a computer program product including a computer program, which, when run, causes the computer to perform the methods described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect.

[0064] Eighthly, this application provides a chip or chip system including at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is used to run computer programs or instructions to perform the methods described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. The communication interface in the chip can be an input / output interface, pins, or circuits, etc.

[0065] In one possible implementation, the chip or chip system described above in this application further includes at least one memory storing instructions. The memory can be an internal storage unit of the chip, such as a register or cache, or it can be a storage unit of the chip itself (e.g., read-only memory, random access memory, etc.).

[0066] It should be understood that the third to eighth aspects of this application correspond to the technical solutions of the first and second aspects of this application, and the beneficial effects achieved by each aspect and the corresponding feasible implementation are similar, and will not be repeated here. Attached Figure Description

[0067] Figure 1 A flowchart illustrating a communication method provided in an embodiment of this application;

[0068] Figure 2 Another flowchart illustrating the communication method provided in an embodiment of this application;

[0069] Figure 3 A schematic diagram of a scenario for the communication method provided in an embodiment of this application;

[0070] Figure 4 A schematic diagram of another scenario for the communication method provided in the embodiments of this application;

[0071] Figure 5 A schematic diagram illustrating yet another scenario of the communication method provided in the embodiments of this application;

[0072] Figure 6 Another flowchart illustrating the communication method provided in an embodiment of this application;

[0073] Figure 7 This is a schematic diagram of another scenario for the communication method provided in the embodiments of this application. Detailed Implementation

[0074] To facilitate a clear description of the technical solutions in the embodiments of this application, some terms and technologies involved in the embodiments of this application will be briefly introduced below:

[0075] 1. Mobile communication system

[0076] Mobile communication systems can be simply referred to as communication systems. The technical solutions of the embodiments in this application can be applied to various communication systems. Communication systems include, for example: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication systems, 5th Generation (5G) systems, or new radio (NR) or future evolution communication systems, etc.

[0077] A communication system may include network devices and terminal devices. Terminal devices can connect to and communicate with network devices wirelessly.

[0078] The network devices in this application embodiment can be access network devices, radio access network (RAN) devices, RAN base station controllers, or core network-side devices. Exemplarily, network devices can be base stations, transmission reception points (TRPs), evolved NodeBs (eNBs or eNodeBs) in LTE systems, home base stations (e.g., home evolved NodeBs or home NodeBs, HNBs), base band units (BBUs), radio controllers, relay stations, access points in cloud radio access networks (CRAN) scenarios, vehicle-mounted devices, wearable devices, and network devices in 5G networks, future evolved PLMN networks, access points (APs) in WLANs, or next-generation NodeBs (gNBs) in new radio (NR) systems, etc. Base stations can be city base stations, micro base stations, pico base stations, femtobase stations, etc., and this application embodiment does not limit this.

[0079] The terminal devices in this application embodiment may include handheld devices with communication functions, vehicle-mounted devices, etc. For example, some terminal devices include: mobile phones, tablets, PDAs, laptops, mobile internet devices (MIDs), virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, terminal devices in 5G networks, or future evolution of public land mobile communication networks. Terminal devices in a network (PLMN), etc., are not limited to this in the embodiments of this application.

[0080] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0081] Furthermore, in this embodiment, the terminal device can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0082] In this embodiment of the application, the terminal device may also be a vehicle, a drone, or a satellite.

[0083] The terminal device in this application embodiment may also be referred to as: terminal device, user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment, etc.

[0084] The electronic device in the embodiments of this application can be a terminal device or a network device.

[0085] 2. Channel State Information Reference Signal and CSI

[0086] Channel state information reference signals may include: CSI reference signal (CSI-RS), sounding reference signal (SRS), demodulation reference signal (DM-RS), and / or cell-specific reference signal (CRS).

[0087] CSI-RS can be understood as a reference signal for CSI measurements, which can be used for downlink channel estimation.

[0088] CRS can be understood as the downlink reference signal in LTE, which can be used for CSI measurement and handover decisions.

[0089] SRS can be a reference signal sent by a terminal device to a network device for the network device to perform uplink channel measurements.

[0090] DM-RS can be used for data demodulation and CSI estimation.

[0091] In this embodiment, channel state information can be simply referred to as CSI information or CSI. CSI measurement can be called CSI estimation or CSI prediction. CSI measurement may include channel estimation. Channel estimation can be called channel measurement.

[0092] CSI information can include information of one or more CSI information types.

[0093] CSI information types can be any of the following: channel matrix, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), signal-to-interference-plus-noise ratio (SINR), reference signal received power (RSRP), reference signal received quality (RSRQ), or spatial grouping and channel similarity (SGCS).

[0094] In the embodiments of this application, the channel state information reference signal can be simply referred to as the reference signal or the pilot signal.

[0095] For example, taking CSI-RS as the reference signal, the CSI measurement procedure may include S001-S003.

[0096] S001. Network devices can send CSI-RS to terminal devices. Terminal devices can receive CSI-RS from network devices.

[0097] S002. The terminal device can use CSI-RS to perform channel estimation and obtain the channel matrix. Optionally, the terminal device can also extract CQI, PMI and / or RI from the channel matrix.

[0098] S003. Terminal devices can use squared generalized cosine similarity to measure the similarity between two channel matrices measured by the terminal device. The similarity between two channel matrices can be called the spatial grouping and channel similarity (SGCS) of the two channel matrices.

[0099] The squared generalized cosine similarity can be understood as a metric used to measure the similarity between two vectors. The two channel matrices can be two channel matrices measured by the terminal device in two adjacent time slots, or two channel matrices measured by the terminal device over two adjacent measurement periods. The measurement period can be preset or indicated by the network device. The similarity value of the two channel matrices ranges from 0 to 1. The closer the similarity value is to 1, the more similar the two channel matrices are, or the higher the similarity between the two channel matrices. The closer the similarity value is to 0, the lower the similarity between the two channel matrices.

[0100] Two channel matrices include the channel matrix. and channel matrix For example, and similarity Satisfying the formula:

[0101]

[0102] in, for The Frobenius norm (or F-norm). for The conjugate transpose of .

[0103] 3. Other terms

[0104] In the embodiments of this application, terms such as "first" and "second" are used to distinguish identical or similar items with substantially the same function and purpose. For example, "first chip" and "second chip" are used only to distinguish different chips and do not limit their order of execution. Those skilled in the art will understand that terms such as "first" and "second" do not limit the quantity or execution order, and that "first" and "second" do not necessarily imply that they are different.

[0105] It should be noted that, in the embodiments of this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design scheme described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or design schemes. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0106] In this application embodiment, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, and c can be single or multiple.

[0107] In this embodiment, the terminal device or network device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also known as main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, HarmonyOS, iOS, or Windows. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software.

[0108] In some implementations, the terminal device can periodically measure channel state information at a preset period T0. For example, the terminal device can use CSI prediction technology based on an AI model to periodically measure channel state information. The terminal device can periodically report the measured channel state information to the network device. The network device can periodically obtain the latest channel state. The network device can adjust system parameters based on the channel state information reported by the terminal device. These system parameters can be parameters used for scheduling terminal devices and / or beam management. System parameters may include modulation and coding scheme parameters, and / or antenna transmission directions of the network device in a multi-antenna system. A multi-antenna system may include a transmitter and a receiver employing multiple-input multiple-output (MIMO) technology. The transmitter is, for example, a network device. The receiver is, for example, a terminal device.

[0109] Wireless channels can be affected by environmental factors, user movement, and / or obstacles, causing them to change dynamically. In cases of rapid channel state changes or drastic channel state fluctuations, the CSI reporting period T0 in some implementations may be long. This can lead to a mismatch between the system parameters adjusted by network devices based on the received CSI and the actual channel state, resulting in a continuous deterioration in communication quality as the channel state changes rapidly.

[0110] Shortening the CSI reporting cycle of terminal devices, allowing them to report CSI at a high frequency, can reduce the probability of continuous deterioration in communication quality in scenarios with rapidly changing channel conditions. However, in scenarios with relatively stable channel conditions, high-frequency CSI reporting may lead to large signaling overhead, which could affect communication efficiency.

[0111] In view of this, embodiments of this application provide a communication method in which a terminal device can receive first information from a network device. The first information indicates the period at which the terminal device reports CSI. The period indicated by the first information can be determined by the network device based on the CSI reported by the terminal device. The terminal device reports CSI according to the period indicated by the first information. Since the period indicated by the first information is determined based on the CSI reported by the terminal device, the reporting period of CSI by the terminal device can be dynamically adjusted based on changes in channel state. For example, in scenarios where channel state changes rapidly, a higher frequency of CSI reporting can be implemented, allowing the network device to acquire CSI more frequently and adjust system parameters more frequently, thereby reducing the probability of communication quality degradation due to mismatch between system parameters and the actual channel state. In scenarios where channel state is relatively stable, a lower frequency of CSI reporting can be implemented, thereby reducing the probability of reduced communication efficiency due to high-frequency CSI reporting.

[0112] This includes the latest CSI reported by the terminal device, such as the CSI most recently reported by the terminal device. Scenarios with rapid changes in channel state or drastic fluctuations in channel state include Scenario 1 and Scenario 2. The communication method provided in this application embodiment can also be applied to Scenario 3 and Scenario 4.

[0113] Scenario 1: Vehicle-to-everything (V2X) scenario. In this scenario, vehicle movement causes rapid changes in channel conditions.

[0114] Scenario 2: Millimeter-wave communication scenario. In this scenario, high-frequency signal blockage can cause drastic fluctuations in channel status.

[0115] Scenario 3: Large-scale MIMO system scenario. In this scenario, network devices need to obtain the CSI reported by terminal devices in real time and accurately, and then optimize beamforming to enhance the quality of transmitted signals and coverage.

[0116] Scenario 4: Emergency communication scenario or indoor positioning scenario.

[0117] Figure 1 A flowchart illustrating a communication method provided in an embodiment of this application is shown.

[0118] like Figure 1 As shown, the communication method provided in this application embodiment may include S101-S102.

[0119] S101. The network device may send first information to the terminal device. Correspondingly, the terminal device may receive the first information from the network device. The first information indicates the period at which the terminal device reports Channel State Information (CSI). The period indicated by the first information is determined based on the CSI reported by the terminal device. For example, the period indicated by the first information is determined based on the latest CSI reported by the terminal device.

[0120] For example, the first information can be downlink control information (DCI). For instance, the first information can be a first DCI or a second DCI.

[0121] Network devices can transmit DCI to terminal devices via the physical downlink control channel (PDCCH). Correspondingly, terminal devices can receive DCI from network devices via the PDCCH.

[0122] For example, when a terminal device and a network device complete a radio resource control (RRC) connection, the network device may send a first DCI to the terminal device. Correspondingly, the terminal device may receive the first DCI from the network device.

[0123] The period indicated by the first DCI is the first period T. rg The first period is the CSI reporting period when the channel conditions are good and stable. The first period is preset. The first period T rg The first cycle can be the same as or different from the cycle T0 mentioned above. The first cycle can be called the routine monitoring cycle or the regular cycle.

[0124] Channel state information can be a CSI report. Channel state information can also include channel quality parameters. Channel quality parameters can be called channel quality indices. Channel quality parameters can be used to indicate one of several CSI information types. These multiple CSI information types can include: CQI, PMI, RI, SINR, RSRP, RSRQ, and SGCS.

[0125] Upon receiving channel quality parameters reported by the terminal device, and if the channel quality parameters are greater than or equal to a first threshold, the network device may send a first DCI to the terminal device. Correspondingly, the terminal device may receive the first DCI from the network device. For example, the network device may periodically send the first DCI to the terminal device according to a first cycle. Correspondingly, the terminal device may periodically receive the first DCI from the network device according to a first cycle.

[0126] Upon receiving channel quality parameters reported by the terminal device, if the channel quality parameters are less than a first threshold and greater than or equal to a second threshold, the network device may send a second DCI to the terminal device. Correspondingly, the terminal device may receive the second DCI from the network device. The period of the second DCI indication is the second period T. dg The second cycle can be called the emergency monitoring cycle. For example, network devices can periodically send a second DCI to terminal devices according to the second cycle. Correspondingly, terminal devices can periodically receive the second DCI from network devices according to the second cycle.

[0127] Among them, the second period T dg Less than the first period T rg Both the first and second thresholds are preset.

[0128] The first threshold can be called the danger threshold C. dg If the channel quality parameter is greater than or equal to the danger threshold, it indicates that the channel state is relatively stable and / or the channel quality is good. Network devices can then initiate regular monitoring cycles to monitor the channel state.

[0129] Channel quality parameters falling below a danger threshold indicates a rapid change in channel conditions. When channel quality parameters are below the danger threshold C... dg When an emergency monitoring is triggered, the network device instructs the terminal device to periodically report CSI at a second cycle, which is shorter than the first cycle, thus acquiring CSI at a higher frequency. This enables the network device to acquire CSI more frequently to monitor the channel state when it changes rapidly.

[0130] The second threshold can be called the backoff threshold value C. fb A channel quality parameter greater than or equal to the second threshold indicates that the channel condition can be improved by adjusting system parameters. When the channel quality parameter is greater than or equal to the second threshold, the network device can adjust the system parameters based on the CSI reported by the terminal device. A channel quality parameter less than the second threshold indicates that the channel condition cannot be improved by adjusting system parameters. When the channel quality parameter is less than the second threshold, the network device may not monitor the channel condition.

[0131] S102. The terminal device may send channel state information to the network device according to the period indicated by the first information. Correspondingly, the network device may receive channel state information from the terminal device.

[0132] Channel state information includes channel quality parameters, for example. Exemplarily, upon receiving a DCI (Distributed Channel Information), the terminal device can perform channel estimation to obtain the channel quality parameters. The terminal device can then send these channel quality parameters to the network device. Correspondingly, the network device can receive the channel quality parameters from the terminal device. Thus, when the terminal device periodically receives DCIs, it can periodically send channel quality parameters to the network device, i.e., it can periodically send channel state information to the network device.

[0133] Optionally, upon receiving a DCI (Distributed Channel Information), the terminal device can periodically perform channel estimation according to the period indicated by the DCI to obtain channel quality parameters. The terminal device can then send the channel quality parameters to the network device. This allows the terminal device to periodically send channel state information to the network device according to the period indicated by the DCI. Correspondingly, the network device can periodically receive channel state information from the terminal device.

[0134] For example, a terminal device can perform CSI measurements based on reference signals transmitted by network devices to obtain channel quality parameters.

[0135] For example, upon receiving the first DCI from the network device, the terminal device can proceed according to the first cycle T. rg The terminal device periodically performs CSI measurements to obtain channel quality parameters. Once the channel quality parameters are obtained, the terminal device can send them to the network device, enabling the terminal device to periodically send channel state information to the network device according to a first cycle. Correspondingly, the network device can periodically receive channel state information from the terminal device.

[0136] When the network device periodically sends the first DCI to the terminal device according to the first cycle, the terminal device performs a CSI measurement after receiving each first DCI to obtain channel quality parameters. The terminal device can then send the channel quality parameters back to the network device. This enables the terminal device to periodically send channel state information to the network device according to the first cycle.

[0137] Upon receiving a second DCI from the network device, the terminal device can proceed according to the second cycle T. dgThe terminal device periodically performs CSI measurements to obtain channel quality parameters. Once the channel quality parameters are obtained, the terminal device can send channel state information to the network device, enabling the terminal device to periodically send channel state information to the network device according to a second cycle. Correspondingly, the network device can periodically receive channel state information from the terminal device.

[0138] When the network device periodically sends a second DCI to the terminal device according to the second cycle, the terminal device performs a CSI measurement after receiving each second DCI to obtain channel quality parameters. The terminal device can then send the channel quality parameters back to the network device. This enables the terminal device to periodically send channel state information to the network device according to the second cycle.

[0139] like Figure 1 As shown in the embodiments of this application, the communication method provided in this application determines the reporting period of channel state information (CSI) by the terminal device based on the CSI (such as channel quality parameters) reported by the terminal device. When the terminal device and the network device complete an RRC connection, or when the channel state is relatively stable and / or the channel quality is good, the terminal device can receive first information from the network device indicating a longer period or a regular monitoring period (such as a first period). The terminal device can periodically report CSI according to the regular monitoring period, enabling the network device to monitor the channel state according to the regular monitoring period. In the case of rapid changes in the channel state, the terminal device can receive first information from the network device indicating a shorter period or an emergency monitoring period (such as a second period). The terminal device can periodically report CSI according to the emergency monitoring period, enabling the network device to monitor the channel state according to the emergency monitoring period. In this way, the network device can dynamically adjust the reporting period of CSI by the UE based on changes in the channel state. In scenarios with rapidly changing channel conditions, CSI reporting is implemented at a higher frequency, allowing network devices to acquire CSI more frequently and adjust system parameters accordingly. This reduces the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel conditions. Conversely, in scenarios with relatively stable channel conditions, CSI reporting is implemented at a lower frequency, further reducing the probability of decreased communication efficiency between network devices and terminal devices caused by high-frequency CSI reporting.

[0140] In the embodiments of this application, the reporting period can be simply referred to as the period.

[0141] The following example uses a gNB as the network device and a UE as the terminal device. Figures 2-7 The communication methods shown in S101-S102 will be explained.

[0142] Figure 2 This paper illustrates another flowchart of the communication method provided in an embodiment of this application.

[0143] like Figure 2 As shown, the communication method provided in this application embodiment may include S201-S206.

[0144] S201, the gNB can send configuration information to the UE. Correspondingly, the UE can receive configuration information from the gNB.

[0145] The configuration information may include a set of periods. The set of periods may include the mapping between period identifiers and periods. The period identifier can be a report configuration ID. The report configuration ID can be represented as ReportConfigId or reportConfigId.

[0146] The period set can be found in Table 1. Table 1 shows a schematic of the period set in the communication method provided in the embodiments of this application.

[0147] Table 1. A schematic diagram of a periodic set in the communication method provided in the embodiments of this application.

[0148]

[0149] As shown in Table 1, the period set can include the correspondence between report configuration identifiers and report slot configurations. The period set can also include the correspondence between report trigger types and period identifiers and / or report slot configurations. Report slot configuration can represent a period. Report trigger type can represent a report trigger condition. Semi-persistent mode can represent CSI reporting triggered based on DCI. Here, report slot configuration can also be represented as reportSlotConfig. report triggertype can be represented as reportTriggerType. semipersistent can be represented as semiPersistent. The report configuration identifier can be carried in the DCI. The period set establishes a mapping relationship between DCI control fields (such as report configuration identifiers) and reporting periods (such as report slot configurations) to facilitate dynamic activation control of CSI reporting. DCI control fields can include a CSI request field. The CSI request field can contain the report configuration identifier. DCI can serve as a trigger signal for CSI report reporting. The trigger signal can be called an activation signal. Thus, dynamic activation control of CSI reporting can be achieved through DCI.

[0150] As shown in Table 1, in the set of periods, the report configuration identifier can be any value of 1, 2, 3, or 4. Report configuration identifier 1 and period T... rgCorresponding. Report configuration identifier 2 corresponds to a cycle of 0.5T. rg Corresponding. Report configuration identifier 3 corresponds to a cycle of 0.35T. rg Corresponding. Report configuration identifier 4 corresponds to a cycle of 0.2T. rg Correspondingly, the report trigger type corresponding to report configuration identifiers 1, 2, 3, and 4 is semi-persistent mode.

[0151] For example, before the gNB sends the first information to the UE, the gNB may send configuration information to the UE. Correspondingly, before the UE receives the first information from the gNB, the UE may receive the configuration information from the gNB.

[0152] Configuration information may include CSI resource configuration and CSI report configuration. CSI report configuration may include period sets and uplink channel resource sets associated with CSI reports. CSI report configuration may be referred to simply as report configuration.

[0153] Taking CSI-RS as the CSI reference signal as an example, CSI resource configuration can include CSI-RS resource configuration, measurement resource settings, and / or resource scheduling information. CSI-RS resource configuration can include the time-frequency resource location of the CSI-RS, the period and offset of the CSI-RS, and / or the antenna port configuration of the CSI-RS. Measurement resource settings are used to indicate the resources being measured by CSI. Resources measured by CSI include physical downlink shared channel (PDSCH) resources. Resource scheduling information is used to indicate the scheduling period and time offset of the resources.

[0154] The set of uplink channel resources associated with a CSI report can be used to indicate the reporting mode, report content, reporting period and offset, report format, and / or report triggering conditions. The reporting mode indicates whether the CSI report is periodic or non-periodic. The report content indicates one or more types of CSI information that the terminal device needs to report. The reporting period and offset can be understood as the periodic time interval and time offset of the report. The reporting period and offset can be a slot offset list resource pool of the physical uplink shared channel (PUSCH) and / or physical uplink control channel (PUCCH). The report format indicates the format and structure of the CSI report, such as type 1, type 2, or type 3 reporting modes. The report triggering conditions indicate when a CSI report is triggered, such as based on changes in channel conditions or based on received DCI. Type 3 reporting modes can be used for periodic or event-driven reporting. In the embodiments of this application, a CSI report with a format and structure of type 3 reporting mode can be referred to as a third type report, or simply type 3.

[0155] Configuration information can be carried in the RRC signaling transmitted from the gNB to the UE. This enables the gNB to perform CSI resource configuration and reporting configuration through RRC layer signaling.

[0156] Upon receiving configuration information from the gNB, the UE can configure CSI resources and reports based on the configuration information.

[0157] The following explanation uses the following CSI report configuration as an example: the report mode indicates that the CSI report is periodic, the report format indicates that the CSI report format and structure is the third type of reporting mode (type 3), and the report trigger condition indicates that it is based on the received DCI.

[0158] S202, the gNB can send the first DCI to the UE. Correspondingly, the UE can receive the first DCI from the gNB.

[0159] For example, the first DCI may include a first report configuration identifier. The first report configuration identifier is used to indicate the first period T. rg The first report configuration identifier can be 1 or report configID=1. report configID=1 can be represented as ReportConfigId=1. report configID=1 can also mean the report configuration identifier is 1.

[0160] For example, upon receiving a CSI report, the gNB can detect whether the channel quality parameter C in the CSI report meets any of the following conditions. The conditions met by C can be condition one, condition two, or condition three.

[0161] Condition 1: C≥C dg .

[0162] Condition 2: C dg >C≥C fb .

[0163] Condition 3: C < C fb .

[0164] The implementation of S202 may include the implementation method of Example 1 and / or the implementation method of Example 2.

[0165] Example 1: The channel quality parameter C received by the gNB satisfies condition 1, i.e., C ≥ C dg In this case, the gNB can send the first DCI to the UE.

[0166] Thus, as shown in Example 1, the gNB can periodically execute S202 according to the first cycle. The specific implementation principle of the gNB's received channel quality parameter C can be found in subsequent S203 or S205.

[0167] Example 2: If the channel quality parameter C received by the gNB satisfies condition 1, the gNB can determine whether the previously received channel quality parameter C satisfies condition 1, and the gNB continuously detects C ≥ C. dg Check if the number of times is greater than or equal to N1. N1 can be an integer greater than 1, and N1 can be a preset value.

[0168] If the channel quality parameter C received by the gNB in ​​the previous instance does not satisfy condition one, or if the gNB continuously detects C ≥ C dg If the number of occurrences is less than N1, the gNB can send a DCI to the UE, and the report configuration identifier in the DCI is the same as the report configuration identifier of the DCI sent by the gNB after receiving the channel quality parameter C that does not meet condition one.

[0169] When C≥C is continuously detected in gNB dg If the number of occurrences is greater than or equal to N1, the gNB can send the first DCI to the UE. This also allows for the periodic transmission of the first DCI according to the first cycle. The gNB continuously detects C ≥ C... dg When the number of times is greater than or equal to N1, the channel quality parameter C received by the gNB in ​​the last time satisfies condition one.

[0170] gNB continuously detects C≥Cdg The number of times is greater than or equal to N1. For example, in N1 consecutive CSI reports received by gNB, the channel quality parameter C in each CSI report satisfies condition one.

[0171] Thus, as shown in Example 2, gNB continuously detects C≥C dg If the number of occurrences is greater than or equal to N1, it indicates that the channel state is good. The gNB can then send the first DCI to the UE to perform channel state monitoring using a regular cycle.

[0172] Optionally, the channel quality parameter C received by the gNB is ≥ C dg If the most recent DCI sent by the gNB is the first DCI, the gNB may not send the first DCI to the UE.

[0173] S203. The UE can send a CSI report to the gNB. Correspondingly, the gNB can receive the CSI report from the UE.

[0174] For example, upon receiving a first DCI, the UE can parse the first DCI to obtain a first report configuration identifier. The DCI containing the report configuration identifier can be a trigger signal that triggers CSI measurements.

[0175] Upon obtaining the first report configuration identifier, the UE can perform CSI measurements based on the pilot signal or CSI reference signal transmitted by the gNB to obtain the channel quality parameter C. The UE can then generate a standardized report structure corresponding to type 3 based on the channel quality parameter C, i.e., generate a CSI report containing the channel quality parameter C.

[0176] The UE can send a CSI report to the gNB. In this embodiment, the CSI report can be represented as type 3.

[0177] Thus, the UE can execute S203 each time it receives a first DCI. With the gNB periodically executing S202 according to the first cycle, the UE can periodically execute S203 according to the first cycle. The UE's periodic execution of S203 according to the first cycle can be understood as the UE being in a normal monitoring state. The DCI can be a trigger signal for CSI measurement and reporting.

[0178] As shown in S201-S203, during the initial monitoring phase, the gNB instructs the UE to configure CSI resources and CSI reports via RRC layer signaling, thus pre-setting the UE to a normal monitoring state. In this state, the UE can receive and parse the first DCI from the network side (e.g., from the gNB) to obtain the first report configuration identifier. In response to the trigger signal first DCI, the UE can perform CSI measurements, generate a standardized report structure containing channel quality parameters, and transmit this standardized report structure to the gNB using type 3 reporting mode. This standardized report structure is the CSI report.

[0179] For scenarios where the UE interacts with the gNB under normal monitoring conditions, please refer to [link / reference]. Figure 3 . Figure 3 This illustration shows a scenario diagram of the communication method provided in an embodiment of this application. For example... Figure 3 As shown, gNB 302 can operate according to the first period T. rg DCI is periodically sent to UE301, and UE301 sends DCI according to the first period T. rg CSI reports are periodically submitted to gNB 302. The report configuration identifier is carried in the DCI (Digital Citation Index). For example, the first DCI. The report configuration identifier, for example, the first report configuration identifier. Figure 3 As shown, the black areas (such as black squares) on the time (t) axis can represent the time periods for DCI and CSI report transmission. For example, the time period for DCI and CSI report transmission can represent the time from when the gNB determines and sends a DCI based on the previously received CSI report to when it receives the CSI report corresponding to that DCI. The white areas (such as white squares) can represent the data signal transmission period, or the period during which the UE and gNB do not interact.

[0180] As shown in S201-S202, when the channel quality parameter is greater than or equal to the first threshold, or when the UE is in a normal monitoring state, the gNB can periodically execute S202 according to the first cycle. Since the first DCI is a trigger signal, the UE executes S202 according to the first cycle T. rg It periodically receives and parses the first DCI from the gNB. This causes the UE to execute the first period T. rg CSI measurements are performed periodically and CSI reports are submitted to gNB.

[0181] In this way, when the channel quality parameter is greater than or equal to the first threshold, or when the channel condition is good and stable, the gNB can periodically send a trigger signal (first DCI) to the UE according to the first cycle. The UE periodically measures the CSI and reports the CSI report according to the first cycle. The gNB and UE realize routine monitoring of the channel condition.

[0182] Optionally, if the most recently received DCI by the UE is the first DCI, the UE can periodically execute S203 according to the first cycle.

[0183] S204. If the channel quality parameter is greater than or equal to the second threshold and less than the first threshold, the gNB may send a second DCI to the UE. Correspondingly, the UE may receive the second DCI from the gNB.

[0184] The second DCI may include a second report configuration identifier. The second report configuration identifier is used to indicate the second period T. dg The second report configuration identifier can be either 'i' or 'report config ID=i'. 'report config ID=i' can be represented as 'ReportConfigId=i'. 'report config ID=i' can also mean 'report configuration identifier=i'. Here, 'i' is an integer.

[0185] The channel quality parameter C received by the gNB satisfies condition two, namely C dg >C≥C fb In this case, the gNB can send a second DCI to the UE.

[0186] In this way, the gNB can periodically execute S204 according to the second cycle. The specific implementation principle of the gNB receive channel quality parameter C can be found in S203 or subsequent S205.

[0187] For example, the channel quality parameter C received by the gNB satisfies condition two (C dg >C≥C fb In the case of ), gNB can calculate the dynamic adjustment coefficient β based on C.

[0188] The gNB can use a piecewise function to map the dynamic adjustment coefficient β to a predefined set of discrete periods, obtaining the period or report configuration identifier corresponding to the dynamic adjustment coefficient β. The predefined set of discrete periods can be the period set in the embodiments of this application. The dynamic adjustment coefficient β is used for period adjustment.

[0189] The gNB can send a second DCI to the UE, which carries the report configuration identifier corresponding to the dynamic adjustment coefficient β.

[0190] The dynamic adjustment coefficient β satisfies the following formula:

[0191]

[0192] in, Indicates taking and The maximum value in, Indicates taking and The minimum value in, The minimum value of the first boundary. The minimum value of the second boundary. For channel quality parameters, The first threshold is preset. The second preset threshold, This is a dynamic response rate adjustment factor. This is the benchmark adjustment coefficient. It can be used to achieve the offset of benchmark monitoring.

[0193] It can represent the linear sensitivity of the channel state. This can be called a linear sensitivity term, which can be used to quantify the channel quality parameter C relative to a degradation threshold (e.g., ...). The degree of deterioration, and with reference to a stable point (such as...) Normalization.

[0194] Second boundary minimum value This can be called a boundary protection upper limit, which allows the emergency period (such as the second period) to be shorter than the normal period (such as the first period), thereby reducing the probability of insufficient channel state monitoring and thus reducing the probability of communication quality degradation due to insufficient monitoring. Taking 1 / 2 as an example, This can make the emergency monitoring frequency twice as fast as the regular monitoring frequency, for example, it can make .

[0195] Minimum value of the first boundary This can be called the lower limit of boundary protection, and can be used to reduce the probability of excessive computational load on terminal devices and / or uplink resource conflicts caused by excessively short CSI report reporting cycles. For example, excessively short reporting cycles... Uplink resources include PUCCH and / or PUSCH resources.

[0196] , , and These are all preset values. For example, It can be 1 / 5. It can be 1 / 2. It can be any value in the range of 0.8 to 1.2, that is... .For example, It can be 0.8, 1, or 1.2.

[0197] It is understood that the embodiments shown in this application... , and The value is just an example, not a representation. , and The value is limited. In some possible implementations of the embodiments of this application, , and The value can be different from the value shown in the embodiments of this application.

[0198] In this embodiment, the piecewise function can divide the dynamic adjustment coefficient β into M segments and map them to obtain M second periods T. dg M is an integer greater than 1.

[0199] For example, taking M as 3, the piecewise function can be:

[0200]

[0201] Among them, A1, A2 and A3 can be periodic coefficients, with 1 > A1 > A2 > A3 > 0. The preset third threshold, This is the preset fourth threshold. β≥ It can indicate a low emergency state or a small rate of channel change. ≤β< This can represent a moderately urgent situation or a situation with a large rate of channel change. β < It can indicate a high state of emergency or an extremely high rate of channel change.

[0202] For example, the periodic set is shown in Table 1, where A1 is 0.5, A2 is 0.35, and A3 is 0.2. It is 0.4. Taking 0.3 as an example, the piecewise function can be:

[0203]

[0204] The second cycle can include a cycle of 0.5T. rg 0.35T cycle rg Or a period of 0.2T rg i can be any value of 2, 3, or 4.

[0205] When the dynamic adjustment coefficient β calculated by the gNB based on the channel quality parameter C is ≥ 0.4, the second report configuration identifier in the second DCI sent by the gNB to the UE can be 2, or report config ID = 2. The period indicated by the second report configuration identifier is 0.5T. rg .

[0206] When the dynamic adjustment coefficient calculated by the gNB based on the channel quality parameter C is 0.3 ≤ β < 0.4, the second report configuration identifier in the second DCI sent by the gNB to the UE can be 3, or report config ID = 3. The period indicated by the second report configuration identifier is 0.35T. rg .

[0207] When the dynamic adjustment coefficient β calculated by the gNB based on the channel quality parameter C is less than 0.3, the second report configuration identifier in the second DCI sent by the gNB to the UE can be 4, or report config ID=4. The period indicated by the second report configuration identifier is 0.2T. rg .

[0208] In scenarios where network devices and / or terminal devices have weak performance, such as weak computing scheduling capabilities, compared to according to T dg =βT rg Determine the second period T corresponding to the dynamic adjustment coefficient β dg and according to the second period T dg The method involves periodically sending a second DCI to the UE to obtain a CSI report. In this embodiment, a piecewise function is used to map the dynamic adjustment coefficient β to a predefined set of discrete periods to obtain the period or report configuration identifier corresponding to the dynamic adjustment coefficient β. This method can achieve discretization mapping of continuous parameters (such as β) and reduce the probability of signaling interaction conflicts between the gNB and the UE caused by frequent period adjustments.

[0209] It is understood that A1, A2, A3, and A4 shown in the embodiments of this application are not part of the technical specifications. and The value is just an example and is not a general representation of A1, A2, A3, ... and The value is limited. In some implementations of the embodiments of this application, A1, A2, A3, and The value can be any of the values ​​shown above, such as A1, A2, A3, etc. and The values ​​are different.

[0210] Optionally, if the report configuration identifier corresponding to the dynamic adjustment coefficient β (such as β1) obtained by the gNB is the same as the report configuration identifier in the most recently sent DCI by the gNB, the gNB may not send a DCI carrying the report configuration identifier corresponding to β1 to the UE.

[0211] If the report configuration identifier corresponding to the dynamic adjustment coefficient β (such as β1) obtained by the gNB is different from the report configuration identifier in the most recent DCI sent by the gNB, the gNB can send a DCI carrying the report configuration identifier corresponding to β1 to the UE.

[0212] S205. The UE can send a CSI report to the gNB. Correspondingly, the gNB can receive the CSI report from the UE.

[0213] For example, upon receiving a second DCI, the UE can parse the second DCI to obtain a second report configuration identifier. The second DCI also serves as a trigger signal for initiating CSI measurements and reporting.

[0214] With the second report configuration identifier obtained, the UE can perform CSI measurements based on the pilot signal or CSI reference signal transmitted by the gNB to obtain the channel quality parameter C. The UE can then generate a standardized report structure corresponding to type 3 based on the channel quality parameter C, i.e., generate a CSI report containing the channel quality parameter C.

[0215] The UE can send a CSI report to the gNB.

[0216] Thus, the UE can execute S205 each time it receives a second DCI. With the gNB periodically executing S204 according to the second cycle, the UE can also periodically execute S205 according to the second cycle. The UE's periodic execution of S205 according to the second cycle can be understood as the UE being in an emergency monitoring state. An emergency monitoring state can also be called a dangerous state or an emergency state.

[0217] Optionally, the UE may periodically execute S205 according to the second cycle of the most recently received second DCI instruction.

[0218] As shown in S204-S205, the channel quality parameter C received by the gNB satisfies condition two (such as C). dg >C≥C fb In the case of a critical state, the gNB calculates the dynamic adjustment coefficient β based on the most recently received channel quality parameter C. The gNB uses a piecewise function to map the dynamic adjustment coefficient β to a set of periods, obtaining the report configuration identifier corresponding to the dynamic adjustment coefficient β. The gNB carries the report configuration identifier in the CSI request field of the second DCI and sends the second DCI to the UE, triggering the critical state. The UE detects the value of reportConfigId from the second DCI based on the configuration issued by the network side (such as the gNB). The UE can switch the reporting period to the emergency monitoring period T corresponding to the detected value of reportConfigId. dg and according to this emergency monitoring cycle T dgSubmit a CSI report.

[0219] For a scenario where the UE interacts with the gNB in ​​emergency monitoring mode, please refer to [link / reference]. Figure 4 . Figure 4 This illustration shows another scenario diagram of the communication method provided in an embodiment of this application. For example... Figure 4 As shown, under normal monitoring conditions, gNB 302 can operate according to the first cycle T. rg DCI is periodically sent to UE 301, and UE 301 sends DCI according to the first period T. rg Periodically submit CSI reports to gNB 302. In the event of a hazard triggering or emergency monitoring status, gNB 302 can proceed according to the second cycle T. dg DCI is periodically sent to UE 301, and UE 301 responds according to the second period T. dg Periodically submit CSI reports to gNB 302. For example... Figure 4 As shown, the filled area on the time (t) axis represents the period of DCI and CSI report transmission. The difference between the filled area and the black area on the time (t) axis lies in the corresponding monitoring status. The black area corresponds to the normal monitoring status, while the filled area corresponds to the emergency monitoring status.

[0220] The second cycle is shorter than the first cycle, enabling the gNB to frequently activate UE CSI reporting when the channel state deteriorates or changes rapidly. This allows the gNB to monitor channel state information in real time and adjust system parameters accordingly, thereby reducing the probability of continuous degradation in communication quality between the gNB and the UE.

[0221] S206. If the channel quality parameter is less than the second threshold, the gNB may send a third DCI to the UE. Correspondingly, the UE may receive the third DCI from the gNB.

[0222] The third DCI may contain deactivation instructions. A DCI containing deactivation instructions (such as the third DCI) can be called a deactivation signal.

[0223] In response to the deactivation signal, the UE can terminate CSI measurements and stop sending CSI reports to the gNB.

[0224] For example, before receiving the third DCI, the UE periodically reports CSI reports according to the first cycle. In response to a deactivation signal, the UE can terminate the periodic CSI reporting process according to the first cycle.

[0225] Before receiving the third DCI, the UE periodically reports CSI reports according to the second cycle. In response to the deactivation signal, the UE can terminate the periodic CSI reporting process according to the second cycle.

[0226] For example, the channel quality parameter C received by the gNB satisfies condition three (e.g., C < C). fb In the case of ( ), gNB can determine whether the previously received channel quality parameter C satisfies condition three, and gNB continuously detects C < C fb Check if the number of times is greater than or equal to N2. N2 can be an integer greater than 1, and N2 can be a preset value.

[0227] If the channel quality parameter C received by the gNB in ​​the previous instance does not meet condition three, or if the gNB continuously detects C < C fb If the number of occurrences is less than N2, the gNB can send a DCI to the UE, and the report configuration identifier in the DCI is the same as the report configuration identifier of the DCI sent by the gNB after receiving the channel quality parameter C that does not meet condition three.

[0228] Alternatively, the channel quality parameter C received by the gNB in ​​the previous iteration does not satisfy condition three, or the gNB continuously detects C < C. fb If the number of occurrences is less than N2, the gNB can send a second DCI to the UE, and the second period indicated by this second DCI can be a minimum second period. The minimum second period is, for example, 0.2T. rg .

[0229] When C≥C is continuously detected in gNB dg If the number of occurrences is greater than or equal to N², the gNB can send a third DCI to the UE. The gNB continuously detects C ≥ C. dg When the number of times is greater than or equal to N2, the channel quality parameter C received by the gNB in ​​the last time satisfies condition three.

[0230] The gNB sending a third DCI to the UE can indicate that the fallback state has been triggered. For scenarios where the UE transitions from emergency monitoring state to fallback state, please refer to [link to relevant documentation]. Figure 5 . Figure 5 This illustration shows another scenario diagram of the communication method provided in an embodiment of this application. For example... Figure 5 As shown, gNB continuously detects C < C fb When the number of iterations is less than N2, gNB 302 can proceed according to the second period T. dg DCI is periodically sent to UE 301, and UE 301 responds according to the second period T. dg Periodically submit CSI reports to gNB 302. When gNB continuously detects C < C fb If the number of times is greater than or equal to N2, the gNB can send a third DCI to the UE to trigger the fallback state.

[0231] Thus, the channel quality parameter C satisfies condition three (e.g., C < C). fb A poor channel condition indicates poor communication quality between network devices and terminal devices. In such cases, the communication quality is poor, or the communication between network devices and terminal devices is invalid.

[0232] gNB continuously detects C≥C dg If the number of occurrences is greater than or equal to N², it indicates that the channel state remains poor. In cases of poor channel state, network devices can reduce the consumption of communication resources by sending deactivation commands to terminal devices to terminate the terminal devices' CSI measurement and CSI report submission processes.

[0233] When C≥C is continuously detected in gNB dg If the number of occurrences is less than N², the gNB sends a Report Configuration Identifier (DCI) (i.e., a trigger signal) to the UE, which can trigger the UE to perform CSI measurements and report CSI data. This can reduce the probability of communication interruption caused by the UE terminating CSI reporting when the channel state changes from a poor state to a good state.

[0234] Optionally, upon receiving a third DCI, the UE can shut down the model used for CSI measurement or CSI prediction to terminate CSI measurement. This can also reduce model power consumption.

[0235] Optionally, upon receiving a third DCI, the UE may wait for a new configuration instruction from the network side (such as the gNB). The configuration instruction may include any of the following: RRC signaling, model reset instruction, CSI-RS resource configuration adjustment instruction, or other predictive model activation instruction. The RRC signaling may be RRC signaling containing CSI configuration information, or RRC signaling used to indicate RRC connection or cell handover. The model may be a CSI predictive model. A CSI predictive model may be, for example, a scalable and flexible framework based on deep learning feature vector feedback (SCsiNet). The CSI predictive model may be deployed on the UE. The model reset instruction may contain a set of configuration parameters associated with the model.

[0236] When the UE receives RRC signaling and the RRC signaling does not contain CSI configuration information, the UE can establish an RRC connection based on the RRC signaling, and perform CSI measurement and CSI report reporting based on the configured CSI resource configuration and CSI report configuration.

[0237] When the UE receives RRC signaling and the RRC signaling contains CSI configuration information, the UE can configure CSI resources and CSI reports based on the configuration information in the RRC signaling, and perform CSI measurements and CSI reports.

[0238] When a UE receives a model reset command, it can reconfigure the model based on the command, perform CSI measurements using the reconfigured model, and report the CSI data. This reconfiguration of the model based on the model reset command can be referred to as model rollback.

[0239] When the UE receives a CSI-RS resource configuration adjustment instruction, the UE can perform CSI measurements based on the CSI-RS resources indicated by the CSI-RS resource configuration adjustment instruction and report a CSI report.

[0240] If the UE receives an activation command for another prediction model, the UE can use the other prediction model to perform CSI measurements and report the CSI.

[0241] It should be understood that, in the embodiments of this application, reporting a CSI report can be understood as a terminal device (such as a UE) sending a CSI report to a network device (such as a gNB). Reporting a CSI report can also be referred to as CSI report submission.

[0242] like Figure 2 As shown in the embodiments of this application, in the communication method provided, during the initial monitoring phase, the network device (such as a gNB) instructs the terminal device (such as a UE) to perform CSI resource configuration and CSI report configuration through RRC layer signaling, thereby pre-setting the UE to a normal monitoring state. When the terminal device is in a normal monitoring state, the network device can periodically send the first DCI to the terminal device according to a normal cycle (or the first cycle) to trigger the terminal device to periodically report CSI reports according to a normal cycle.

[0243] When the channel condition deteriorates or changes rapidly, such as C dg >C≥C fbIn this scenario, network devices can periodically send a second DCI to terminal devices according to an emergency monitoring cycle (or a second cycle) to trigger the terminal devices to periodically report CSI reports according to the emergency monitoring cycle. This increases the monitoring density of the channel state through updated configurations issued by the network side (such as the report configuration identifier in the second DCI) when the channel state deteriorates or changes rapidly, enabling terminal devices to perform CSI measurements and report CSI reports at a higher frequency. It also allows switching from a regular monitoring state to an emergency monitoring state, allowing network devices to adjust system parameters more frequently, thereby reducing the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel state. Furthermore, it enables dynamic adjustment of the CSI report reporting cycle based on the channel state, reducing the probability of mismatches between system parameters and the actual channel state. It can also reduce the probability of resource waste or conflicts in highly dynamic scenarios (such as scenarios with rapid changes in channel state). In this embodiment, the dynamic cycle mechanism (such as reporting CSI according to a second cycle) is implemented through... The coefficients are adapted to the channel conditions in real time, which can achieve joint optimization of resource utilization and conflict avoidance.

[0244] As the channel condition continues to deteriorate, for example, C < C fb In such cases, network devices can transmit deactivation instructions to terminal devices through a third DCI, causing the terminal devices to stop CSI measurements and CSI report submissions. This can reduce the probability of invalid communication consuming communication resources due to poor channel conditions.

[0245] Compared to some implementations that use a fixed frequency reduction strategy to compress signaling and optimize signaling overhead by reducing the number of CSI measurements, they lack adaptive monitoring of real-time channel status and dual-end collaborative decision-making capabilities. The communication method provided in this application, based on threshold-triggered periodic dynamic switching, empowers network devices and terminal devices (such as gNB-UE) with dual-end collaborative decision-making capabilities. For example, DCI commands drive ReportConfigId changes, which can effectively balance monitoring accuracy and resource overhead.

[0246] Figure 6 This illustration shows another flowchart of the communication method provided in an embodiment of this application.

[0247] Figure 6 and Figure 2 The difference is that, in Figure 6 In the middle, the channel quality parameter C received by the gNB satisfies condition two (such as C). dg >C≥C fb After that, the channel condition became good. That is, at C... dg >C≥C fb Subsequently, the channel quality parameter C received by the gNB satisfies condition one (e.g., C ≥ C).dg (In C≥C) dg In this case, the gNB executes S202, and the UE executes S203. Figure 2 In the middle, the channel quality parameter C received by the gNB satisfies condition two (such as C). dg >C≥C fb After that, the channel condition continued to deteriorate. That is, at C... dg >C≥C fb Subsequently, the channel quality parameter C received by the gNB satisfies condition three (e.g., C < C). fb ). In C < C fb In this case, gNB executes S206. The UE performs model rollback or shuts down the model.

[0248] In C dg >C≥C fb After that, C≥C dg In this case, the gNB executes S202 to trigger a monitoring level downgrade, specifically a downgrade from the monitoring level in emergency monitoring to the monitoring level in normal monitoring. For a scenario where the UE downgrades from the monitoring level in emergency monitoring to the monitoring level in normal monitoring, please refer to [link to relevant documentation]. Figure 7 . Figure 7 This illustration shows another scenario diagram of the communication method provided in an embodiment of this application. For example... Figure 7 As shown, gNB continuously detects C≥C dg If the number of iterations is less than N1, gNB 302 can proceed according to the second period T. dg DCI is periodically sent to UE 301, and UE 301 responds according to the second period T. dg Periodically report CSI to gNB 302. When gNB continuously detects C≥C dg If the number of iterations is greater than or equal to N1, gNB can proceed according to the first period T. rg The first DCI is periodically sent to the UE, and UE 301 responds according to the first period T. rg Periodically submit CSI reports to gNB 302.

[0249] Optionally, if the UE is downgraded from the monitoring level of the emergency monitoring state to the monitoring level of the normal monitoring state, the UE can release the additional or redundant resources allocated to support more intensive CSI reporting during the emergency monitoring phase, in order to reduce the probability of resource waste.

[0250] like Figure 6As shown in the embodiments of this application, in the communication method provided, during the initial monitoring phase, the network device (such as a gNB) instructs the terminal device (such as a UE) to perform CSI resource configuration and CSI report configuration through RRC layer signaling, thereby pre-setting the UE to a normal monitoring state. When the terminal device is in a normal monitoring state, the network device can periodically send the first DCI to the terminal device according to a normal cycle (or the first cycle) to trigger the terminal device to periodically report CSI reports according to a normal cycle.

[0251] When the channel condition deteriorates or changes rapidly, such as C dg >C≥C fb In this scenario, the monitoring density of channel status is increased by updating configurations issued by the network side (such as the report configuration identifier in the second DCI), enabling terminal devices to perform CSI measurements and report CSI reports at a higher frequency. The system switches from normal monitoring to emergency monitoring, allowing network devices to adjust system parameters more frequently, thereby reducing the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and actual channel status. The system also dynamically adjusts the CSI report reporting cycle based on channel status, further reducing the probability of mismatches between system parameters and actual channel status.

[0252] When the channel state recovers to stability or becomes good, for example, C≥C dg In certain situations, network devices can downgrade from an emergency monitoring state to a normal monitoring state by sending a first DCI to the terminal device. This reduces the resource consumption of DCI while maintaining good communication quality between the network device and the terminal device, thereby improving communication efficiency.

[0253] Optionally, the report configuration identifier in the DCI in the above embodiments can be replaced with a period. This also allows for dynamic adjustment of the CSI report reporting period based on channel state, reducing the probability of system parameters not matching the actual channel state.

[0254] Optionally, for scenarios where network devices and / or terminal devices have strong performance, such as strong computing and scheduling capabilities, the channel quality parameter C received by the network device satisfies condition two (C dg >C≥C fb In the case of ), the period T in the DCI sent by the network device to the terminal device dg It can satisfy T dg =βT rg .

[0255] In scenarios where network and / or terminal devices possess high performance, such as strong computational scheduling capabilities, it is possible to dynamically adjust the CSI report reporting cycle based on channel state, reducing the probability of system parameters mismatching with the actual channel state. Furthermore, the high performance of network and / or terminal devices reduces the probability of signaling interaction conflicts caused by frequent cycle adjustments.

[0256] In the above embodiments, the first threshold It can be the first threshold corresponding to CSI information type x. Second threshold It can be the second threshold corresponding to CSI information type x. . and All can be preset.

[0257] The channel quality parameter C can be the measurement result of CSI information type x obtained by the terminal device based on the reference signal CSI measurement. In this way, when the terminal equipment measures CSI with high accuracy, the CSI reporting period can be adjusted based on the measurement results to obtain accurate channel state information and thus an accurate reporting period. This reduces the probability of mismatch between adjusted system parameters and the actual channel state due to an inappropriate reporting period, thereby reducing the probability of communication quality degradation.

[0258] Alternatively, the channel quality parameter C can also be the result of the terminal device using measurement error. The corrected result obtained by making corrections Therefore, when the accuracy of CSI measurement by terminal equipment is low, using measurement error correction to correct the measurement results can obtain more accurate channel state information, thereby obtaining a more accurate reporting cycle and reducing the probability of communication quality degradation.

[0259] For example, in C is Under these conditions, the dynamic adjustment coefficient β satisfies the formula:

[0260]

[0261] In C Under these conditions, the dynamic adjustment coefficient β satisfies the formula:

[0262]

[0263] For example, the corrected result Satisfying the formula:

[0264]

[0265] in, It can represent the weight of the measurement result. This can represent the weight of the measurement error. x is the CSI information type. The measurement error is for CSI information type x. The measurement error for CSI information type x can be understood as the measurement error of channel state information of CSI information type x. The measurement error can be normalized mean square error (NMSE), which can be used to quantify the error between the measured value (or predicted value) and the true value. Normalized mean square error can be understood as a performance metric used in statistics and signal processing. In the embodiments of this application, It can be preset.

[0266] Taking the use of a CSI prediction model in terminal devices to implement CSI measurement as an example, Measurements can be made for CSI prediction models x The measurement error of the type of channel state information, and It can be obtained by training a CSI prediction model.

[0267] For example, It can be 0.7. It can be 0.3.

[0268] It is understood that the embodiments shown in this application... and The value is just an example, not a representation. and The value is limited. In some possible implementations of the embodiments of this application, and The value can be different from the value shown in the embodiments of this application. Optionally, .

[0269] For example, with CSI information type x as SGCS, =0.7, =0.3, C is For example, the measurement results can be... .right The corrected result obtained after making the correction can be First threshold It can be represented as or Second threshold It can be represented as or . The measurement error can be expressed as SGCS. .

[0270] The formula can be satisfied:

[0271]

[0272] The dynamic adjustment coefficient β can satisfy the formula:

[0273]

[0274] Among some possible implementations, It can be represented as SGCS. It can be represented as S.

[0275] That is, S can satisfy the formula:

[0276]

[0277] The dynamic adjustment coefficient β can satisfy the formula:

[0278]

[0279] For example, with CSI information type CQI, =0.7, =0.3, C is For example, the measurement results can be ,right The corrected result obtained after making the correction can be First threshold It can be represented as Second threshold It can be represented as . This can be expressed as the measurement error of CQI. .

[0280] The formula can be satisfied:

[0281]

[0282] The dynamic adjustment coefficient β can satisfy the formula:

[0283]

[0284] When the terminal device uses a CSI prediction model for CSI measurement, as shown in the above embodiments, the communication method provided in this application can dynamically adjust the channel state monitoring strategy by using multiple reporting periods (such as the first period and the second period) according to the channel state. This allows the gNB to quantitatively analyze the long-term performance trend of the CSI prediction model and dynamically adjust the model parameters to optimize the model's adaptability in complex channel environments. Long periods (such as the first period) can be used for stable scenarios, while short periods (such as the second period) can be used for highly dynamic scenarios. Densely collected performance data can accurately locate model failure scenarios, providing high-resolution input for targeted parameter adjustments, thereby quickly restoring prediction accuracy. Spatial grouping and channel similarity (SGCS) can also be used to evaluate the intermediate key performance indicators (KPIs) of the CSI prediction model's channel state information (CSI) prediction performance. Therefore, the communication method provided in this application is also applicable to scenarios where the CSI prediction model may fail or resource-intensive scenarios.

[0285] The communication method provided in this application embodiment is based on a semi-persistent triggering monitoring mode with dynamic periodic configuration. It estimates channel state changes in real time and dynamically adjusts the monitoring strategy. By pre-setting multiple periodic resources (such as period sets) and a dynamic activation mechanism based on semi-persistent triggering, it achieves flexible triggering without the need for reconfiguration of RRC signaling, thus balancing the reliability and overhead of channel state monitoring.

[0286] The communication method provided in this application employs a performance-driven dynamic periodic adjustment algorithm. For example, it calculates a dynamic adjustment coefficient β based on the channel quality parameter C and determines the reporting period based on the dynamic adjustment coefficient. This maps real-time performance (such as the channel quality parameter C) to a dynamic adjustment coefficient, and selects the corresponding period from a predefined period set based on the coefficient. This resolves signaling conflicts caused by frequent reconfiguration and improves the system stability of the communication system.

[0287] This application also proposes a communication method, the method comprising: receiving first information, the first information being used to indicate the period for a terminal device to report channel state information, the period being determined based on the channel state information reported by the terminal device; and sending channel state information according to the period.

[0288] For example, the first information could be Figures 1-7 The DCI used to indicate the period or the DCI containing the report configuration identifier in the illustrated embodiment, for example... Figures 1-7 The first DCI or the second DCI in the illustrated embodiment. The period can be... Figures 1-7 The cycle or reporting cycle in the illustrated embodiment, for example Figures 1-7 The illustrated embodiment represents either a first cycle or a second cycle. The terminal device can be... Figures 1-7The terminal device or UE in the illustrated embodiment. Channel state information may be... Figures 1-7 The illustrated embodiments include Channel State Information (CSI) or CSI reports. Optionally, the DCI format in this application embodiment can be either a first format (Format 0_1) or a second format (Format 0_2). Format 0_1 ​​can be understood as the DCI format defined in 3GPP Release 15. Format 0_1 ​​can also be understood as the DCI format defined in 3GPP Release 16.

[0289] For the specific implementation principle of this embodiment, please refer to [link / reference]. Figure 1 For the specific implementation principle of the embodiment shown, please refer to the specific implementation principle of S201-S203, S202-S203, and S204-S205.

[0290] In this way, the period for terminal devices to report Channel State Information (CSI) is determined based on the CSI reported by the terminal devices. This allows the CSI reporting period to vary with changes in CSI. For example, in scenarios where the channel state changes rapidly, higher-frequency CSI reporting allows network devices to acquire CSI more frequently and adjust system parameters more frequently, thereby reducing the probability of communication quality degradation between network devices and terminal devices due to a mismatch between system parameters and the actual channel state. Conversely, in scenarios where the channel state is relatively stable, lower-frequency CSI reporting reduces CSI reporting overhead, thus reducing the probability of decreased communication efficiency between network devices and terminal devices due to high-frequency CSI reporting.

[0291] Optionally, the channel state information includes channel quality parameters. When the channel quality parameters are greater than or equal to a first threshold, or when the terminal device completes a Radio Resource Control (RRC) connection, the period indicated by the first information is a first period. Alternatively, when the channel quality parameters are less than the first threshold and the channel quality parameters are greater than or equal to a second threshold, the period indicated by the first information is a second period. The second period is shorter than the first period.

[0292] For example, the channel quality parameter can be Figures 1-7 The channel quality parameters in the illustrated embodiment. The first threshold can be... Figures 1-7 The first threshold (e.g., C) in the illustrated embodiment dg The first cycle could be... Figures 1-7 The first period (T) in the illustrated embodiment rgThe second threshold can be... Figures 1-7 The second threshold (such as C) in the illustrated embodiment fb The second cycle could be... Figures 1-7 The second period (T) in the illustrated embodiment dg ).

[0293] When the channel quality parameter is greater than or equal to the first threshold, or when the terminal device completes a Radio Resource Control (RRC) connection, the specific implementation of the first information indication of the first cycle can be found in the specific implementation principles of S202-S203, or S201-S203. When the channel quality parameter is less than the first threshold and the channel quality parameter is greater than or equal to the second threshold, the specific implementation of the first information indication of the second cycle can be found in the specific implementation principles of S204-S205.

[0294] In this way, if the channel quality parameter is greater than or equal to the first threshold, it can be said that the channel state is relatively stable and / or the channel quality is good. The terminal device can periodically report CSI according to the first cycle to realize the monitoring of the channel state according to the first cycle.

[0295] If the channel quality parameter is below the first threshold but greater than or equal to the second threshold, it indicates a rapid change in channel state. However, the channel state can be improved by adjusting system parameters. Terminal devices can periodically report CSI at a shorter second interval than the first, acquiring CSI at a higher frequency. This allows network devices to acquire CSI more frequently when the channel state changes rapidly, enabling them to monitor the channel state and adjust system parameters accordingly. This, in turn, reduces the probability of communication quality degradation between network devices and terminal devices due to a mismatch between system parameters and the actual channel state.

[0296] Optionally, the second period is determined based on the first period and channel quality parameters.

[0297] In this way, CSI reporting or channel status monitoring can be performed by using the first period as a reference and adjusting or selecting a shorter period than the first period based on channel quality parameters.

[0298] Optionally, the second cycle Satisfying the formula:

[0299]

[0300] Where A1, A2, and A3 are all preset period coefficients. It is a dynamic adjustment coefficient used for periodic adjustment. It is determined based on channel quality parameters. For the first cycle, The third threshold, This is the fourth threshold.

[0301] In this way, a piecewise function is used to map the continuous dynamic adjustment coefficient β to a discrete period, thereby realizing the adjustment of the period based on the dynamic adjustment coefficient β. It is determined based on channel quality parameters, thereby enabling dynamic adjustment of the cycle based on channel quality parameters. The cycle is the CSI reporting cycle.

[0302] Optionally, dynamic adjustment coefficient Satisfying the formula:

[0303]

[0304] in, Indicates taking and The maximum value in, Indicates taking and The minimum value in, The first boundary minimum value is preset. The preset second boundary minimum value, For channel quality parameters, The first threshold is preset. The second preset threshold, The preset dynamic response rate adjustment factor, The preset benchmark adjustment coefficient, , .

[0305] so, , It is possible to achieve a period smaller than the first period based on a dynamic adjustment coefficient β. Second boundary minimum. This can be called the boundary protection upper limit, which allows the emergency period (such as the second period) to be shorter than the normal period (such as the first period). This reduces the probability of insufficient channel state monitoring when channel states change rapidly, and thus reduces the probability of communication quality degradation due to insufficient monitoring. The first boundary minimum value. This can be called the lower limit of boundary protection, and can be used to reduce the probability of excessive computational load on terminal devices and / or uplink resource conflicts caused by excessively short CSI report reporting cycles. For example, excessively short reporting cycles... Uplink resources include PUCCH and / or PUSCH resources.

[0306] Optionally, the second cycle Satisfying the formula:

[0307]

[0308] in, This is a dynamic adjustment coefficient. This is the first cycle.

[0309] In this way, the adjustment period can be adjusted based on the dynamic adjustment coefficient β. It is determined based on channel quality parameters, thereby enabling dynamic adjustment of the cycle based on channel quality parameters.

[0310] Optionally, the channel quality parameter is the measurement result of channel state information type x obtained based on the channel state information reference signal measurement. Or, for the measurement error of the measurement result using channel state information type x. The corrected result obtained by making corrections Corrected result Satisfying the formula:

[0311]

[0312] in, Indicates measurement results The weight, Indicates measurement error The weight, where x is the CSI information type. The measurement error is for CSI information type x.

[0313] Thus, when the terminal device's CSI measurement accuracy is high, the CSI reporting period can be adjusted based on the measurement results to obtain accurate channel state information and, consequently, an accurate reporting period. This reduces the probability of mismatched system parameters due to an inappropriate reporting period, which in turn reduces the probability of communication quality degradation. Conversely, when the terminal device's CSI measurement accuracy is low, using measurement error correction to obtain measurement results yields more accurate channel state information and, consequently, a more accurate reporting period, further reducing the probability of communication quality degradation.

[0314] Optionally, the channel state information type x is any one of the following: Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indicator (RI), Signal-to-Interference-Noise Ratio (SINR), Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), or Spatial Packet and Channel Similarity (SGCS).

[0315] This allows for the determination of the reporting period based on any one of CQI, PMI, RI, SINR, RSRP, RSRQ, or Spatial Packet and Channel Similarity (SGCS). This expands the application scope or scenarios of the communication method provided in the embodiments of this application.

[0316] Optionally, the measurement error is normalized mean square error. Normalized mean square error is a performance metric used in statistics and signal processing, which allows for accurate measurement error determination, thereby reducing the probability of inaccurate corrected results due to inaccurate measurement errors.

[0317] Optionally, the channel state information includes channel quality parameters. The method further includes: receiving second information, which instructs the terminal device to terminate reporting channel state information, wherein the second information is received if the channel quality parameters reported by the terminal device are less than a second threshold.

[0318] For example, the second information could be Figures 2-7 The third DCI in the illustrated embodiment. The specific implementation principle of this embodiment can be found in the specific implementation principle shown in S206, and will not be repeated here.

[0319] Thus, if the channel quality parameter is less than the second threshold, it indicates that adjusting system parameters cannot improve the channel state. When the channel quality parameter is less than the second threshold, the terminal device stops reporting channel state information to terminate channel state monitoring. A channel quality parameter less than the second threshold can also indicate a poor channel state. In a poor channel state, the communication quality between the network device and the terminal device is poor, or the communication between the network device and the terminal device is invalid. Terminating the reporting of channel state information by the terminal device in a poor channel state reduces the occupation of communication resources by invalid communication, thereby improving the effective utilization rate of communication resources.

[0320] Optionally, the second information is received when the channel quality parameters reported by the terminal device k times consecutively are all less than the second threshold, where k is an integer and k is greater than or equal to the fifth threshold.

[0321] For example, the fifth threshold can be Figure 2 The preset N2 in the embodiment. For the specific implementation principle of this embodiment, please refer to S206 where gNB continuously detects C≥C. dg The specific implementation principle of network devices (such as gNB) sending deactivation commands to terminal devices when the number of times is greater than or equal to N2 is not elaborated here.

[0322] In this way, if the channel quality parameters reported by the terminal device k consecutive times are all less than the second threshold, and k is greater than or equal to the fifth threshold, it can be indicated that the channel state remains poor. Terminating CSI reporting by the terminal device can reduce the occupation of communication resources by invalid communication.

[0323] Optionally, the first information includes a period identifier for indicating the period. Before receiving the first information, the method further includes: receiving configuration information, the configuration information including the correspondence between the period identifier and the period.

[0324] For example, the periodic identifier can be Figures 2-7 The period identifier or report configuration identifier (report config ID) in the illustrated embodiment can be configured as follows: Figures 2-7 The configuration information (or CSI configuration information) in the illustrated embodiment. The correspondence between the period identifier and the period can be... Figure 2 The embodiments shown illustrate the correspondence between period identifiers and periods in the period set, such as the correspondence between report configuration identifiers and report time slot configurations shown in Table 1.

[0325] In this way, the correspondence between the period identifier and the period can be configured before receiving the first information, so that when the first information carries the period identifier, the period for reporting CSI can be determined based on the period identifier.

[0326] This application provides a communication method, which includes: sending first information, the first information being used to indicate the period for a terminal device to report channel state information, the period being determined based on the channel state information reported by the terminal device; and receiving channel state information sent by the terminal device according to the period.

[0327] For the specific implementation principle of this embodiment, please refer to [link / reference]. Figure 1 The specific implementation principle of the illustrated embodiment can also be found in the specific implementation principles of S201-S203, S202-S203, and S204-S205. The executing entity of this embodiment can be a network device. For example, a network device... Figures 1-7 The network device or gNB in ​​the illustrated embodiment.

[0328] Thus, the period for the first information indication (CI) is determined based on the CSI reported by the terminal device. This allows the CSI reporting period to vary with changes in the CSI. For example, in scenarios with rapidly changing channel conditions, higher CSI reporting frequencies enable network devices to acquire CSI more frequently and adjust system parameters accordingly, reducing the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel conditions. Conversely, in scenarios with relatively stable channel conditions, lower CSI reporting frequencies reduce CSI reporting overhead, thereby reducing the probability of decreased communication efficiency between network devices and terminal devices due to high-frequency CSI reporting.

[0329] Optionally, the channel state information includes channel quality parameters. When the channel quality parameters are greater than or equal to a first threshold, or when the terminal device completes a radio resource control connection, the period indicated by the first information is a first period. Alternatively, when the channel quality parameters are less than the first threshold and the channel quality parameters are greater than or equal to a second threshold, the period indicated by the first information is a second period. The second period is shorter than the first period.

[0330] This allows terminal devices to periodically report CSI according to a first cycle when the channel state is relatively stable and / or the channel quality is good, thus monitoring the channel state on a first-cycle basis. When the channel state changes rapidly, but can be improved by adjusting system parameters, the terminal device can periodically report CSI according to a second cycle, which is shorter than the first cycle, acquiring CSI at a higher frequency. This enables network devices to acquire CSI more frequently when the channel state changes rapidly, allowing for monitoring of the channel state and adjustments to system parameters. This, in turn, reduces the probability of communication quality degradation between network devices and terminal devices due to mismatches between system parameters and the actual channel state.

[0331] Optionally, the second period is determined based on the first period and channel quality parameters. This allows for adjusting or selecting a shorter period than the first period for CSI reporting or channel status monitoring, with the first period as a reference, based on channel quality parameters.

[0332] Optionally, the channel state information includes channel quality parameters. The method further includes: sending second information, which instructs the terminal device to terminate reporting channel state information, wherein the second information is sent when the channel quality parameters reported by the terminal device are less than a second threshold.

[0333] Thus, a channel quality parameter below the second threshold indicates that adjusting system parameters cannot improve the channel state. It also indicates a poor channel state. In a poor channel state, the communication quality between network devices and terminal devices is poor, or the communication is invalid. When the channel quality parameter is below the second threshold, sending a second message causes the terminal device to stop reporting channel state information, thereby terminating channel state monitoring. This reduces the consumption of communication resources by invalid communication, and thus improves the effective utilization of communication resources.

[0334] Optionally, the second information is sent when the channel quality parameters reported by the terminal device k times consecutively are all less than the second threshold, where k is an integer and k is greater than or equal to the fifth threshold.

[0335] In this way, if the channel quality parameters reported by the terminal device k consecutive times are all less than the second threshold, and k is greater than or equal to the fifth threshold, it can be indicated that the channel state remains poor. The network device can reduce the occupation of communication resources by sending a second message to the terminal device to terminate the terminal device's CSI reporting.

[0336] Optionally, the first information includes a period identifier for indicating the period. Before sending the first information, the method further includes: sending configuration information, which includes the correspondence between the period identifier and the period.

[0337] In this way, the terminal device can be instructed to configure the correspondence between the period identifier and the period before sending the first information, so that when the first information is sent carrying the period identifier, the terminal device can easily determine the period for reporting CSI based on the period identifier.

[0338] This application provides a communication system, including a network device and a terminal device. The terminal device is used to execute the method described in the first aspect or any possible implementation of the first aspect, and the network device is used to execute the method described in the second aspect or any possible implementation of the second aspect.

[0339] For example, a network device can be Figures 1-7 The network device in the illustrated embodiment is, for example, a gNB. The terminal device may be... Figures 1-7 The terminal device in the illustrated embodiment is, for example, a UE. The communication system can be as follows: Figures 3-5 or Figure 7 The illustrated embodiment includes a communication system shown with UE301 and gNB 302.

[0340] This allows for determining the CSI reporting cycle based on channel state information, which can reduce the probability of communication quality degradation.

[0341] This application provides a communication device, which can be an electronic device, or a chip or chip system within an electronic device. The communication device may include a display unit and a processing unit. When the communication device is an electronic device, the display unit may be a display screen. The display unit is used to perform display steps to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. When the communication device is an electronic device, the processing unit may be a processor. The communication device may also include a storage unit, which may be a memory. The storage unit is used to store instructions, and the processing unit executes the instructions stored in the storage unit to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. When the communication device is a chip or chip system within an electronic device, the processing unit may be a processor. The processing unit executes the instructions stored in the storage unit to enable the electronic device to implement a communication method described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. The storage unit can be a storage unit inside the chip (e.g., a register, cache, etc.) or a storage unit located outside the chip within the electronic device (e.g., a read-only memory, random access memory, etc.).

[0342] This application provides a chip or chip system including at least one processor and a communication interface. The communication interface and the at least one processor are interconnected via a circuit. The at least one processor is used to run computer programs or instructions to perform the methods described in the first aspect, any possible implementation of the first aspect, the second aspect, or any possible implementation of the second aspect. The communication interface in the chip can be an input / output interface, pins, or circuits, etc.

[0343] In one possible implementation, the chip or chip system described above in this application further includes at least one memory storing instructions. The memory can be an internal storage unit of the chip, such as a register or cache, or it can be a storage unit of the chip itself (e.g., read-only memory, random access memory, etc.).

[0344] It should be noted that the module names involved in the embodiments of this application can all be defined as other names, as long as they can achieve the function of each module, and no specific restrictions are placed on the module names.

[0345] The communication method of the embodiments of this application has been described above. The apparatus for executing the above method provided in the embodiments of this application is described below. Those skilled in the art will understand that the methods and apparatus can be combined and referenced with each other, and the related apparatus provided in the embodiments of this application can execute the steps in the above list sorting method.

[0346] The communication method provided in this application can be applied to electronic devices with communication functions. Electronic devices include terminal devices, and the specific device form of the terminal device can be referred to the above-described related descriptions, which will not be repeated here.

[0347] This application provides an electronic device, including: a processor and a memory; the memory stores computer execution instructions; the processor executes the computer execution instructions stored in the memory, causing the electronic device to perform the above-described method.

[0348] This application provides a chip. The chip includes a processor, which is used to call a computer program in memory to execute the technical solutions in the above embodiments. Its implementation principle and technical effects are similar to those in the related embodiments described above, and will not be repeated here.

[0349] This application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, it implements the methods described above. The methods described in the above embodiments can be implemented wholly or partially by software, hardware, firmware, or any combination thereof. If implemented in software, the functionality can be stored as one or more instructions or code on or transmitted over the computer-readable medium. The computer-readable medium can include computer storage media and communication media, and can also include any medium that can transfer a computer program from one place to another. The storage medium can be any target medium accessible by a computer.

[0350] In one possible implementation, a computer-readable medium may include RAM, ROM, compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage or other magnetic storage devices, or any other medium targeted to carry or to store the required program code in the form of instructions or data structures, and accessible by a computer. Furthermore, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used herein, disks and optical discs include laser discs, digital versatile discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, while optical discs optically reproduce data using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0351] This application provides a computer program product, which includes a computer program that, when run, causes a computer to perform the above-described method.

[0352] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processing unit of a general-purpose computer, special-purpose computer, embedded processor, or other programmable device to produce a machine, such that the instructions, which execute via the processing unit of the computer or other programmable data processing device, generate instructions for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0353] The above detailed embodiments further illustrate the purpose, technical solution, and beneficial effects of the embodiments of this application. It should be understood that the above are merely specific embodiments of the embodiments of this application and are not intended to limit the protection scope of the embodiments of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solutions of the embodiments of this application should be included within the protection scope of the embodiments of this application.

Claims

1. A communication method characterized by comprising: The method comprises: receiving first information, the first information being used for indicating a period for a terminal device to report channel state information, the period being determined based on channel state information reported by the terminal device; sending channel state information according to the period; the channel state information comprises a channel quality parameter; in a case where the channel quality parameter is greater than or equal to a first threshold value, or in a case where the terminal device completes a radio resource control connection, the period indicated by the first information is a first period; or in a case where the channel quality parameter is less than the first threshold value and the channel quality parameter is greater than or equal to a second threshold value, the period indicated by the first information is a second period; the second period is less than the first period; The second period is determined based on the first period and a dynamic adjustment factor The dynamic adjustment factor is determined based on a preset first boundary minimum value, a preset second boundary minimum value, and a linear sensitivity of the channel state, the linear sensitivity of the channel state being determined based on the channel quality parameter. The dynamic adjustment factor is determined based on a preset first boundary minimum value, a preset second boundary minimum value, and a linear sensitivity of the channel state, the linear sensitivity of the channel state being determined based on the channel quality parameter.

2. The method of claim 1, wherein, the second period satisfies the formula: wherein A1, A2 and A3 are all preset periodic coefficients, is a dynamic adjustment coefficient and is used for adjustment of the period, is determined based on the channel quality parameter, is the first period, is a third threshold value, is a fourth threshold value.

3. The method of claim 2, wherein, The dynamic adjustment coefficient satisfies the formula: wherein, denotes taking the maximum of and denotes taking the minimum of and denotes taking the minimum of and is a preset first boundary minimum value, is a preset second boundary minimum value, is a channel quality parameter, is a preset first threshold value, is a preset second threshold value, is a preset dynamic response rate adjustment factor, is a preset reference adjustment coefficient.

4. The method of claim 1, wherein, the second period satisfies the formula: wherein is a dynamic adjustment factor, is the first period.

5. The method of claim 1, wherein, The channel quality parameter is a measurement result of channel state information type x based on channel state information reference signal measurement , or a corrected result obtained by correcting the measurement result using a measurement error of the channel state information type x ​ The modified result satisfies the formula: wherein, denotes the measurement result the weight of the measurement result, denotes the measurement error the weight of the measurement error, x is a CSI information type, is the measurement error for the CSI information type x.

6. The method of claim 5, wherein, the channel state information type x is any one of a channel quality indication, a precoding matrix indicator, a rank indication, a signal to interference and noise ratio, a reference signal received power, a reference signal received quality, or a spatial group and channel similarity.

7. The method of claim 5, wherein, The measurement error is a normalized mean square error.

8. The method of claim 1, wherein, The channel state information comprises a channel quality parameter; The method further comprises: receiving second information, the second information being used for indicating the terminal device to terminate reporting channel state information, the second information being received in a case where a channel quality parameter reported by the terminal device is less than a second threshold value.

9. The method of claim 8, wherein, The second information is received in a case where channel quality parameters reported by the terminal device for k consecutive times are all less than the second threshold value, the k being an integer and the k being greater than or equal to a fifth threshold value.

10. The method according to any one of claims 1-9, characterized in that, The first information comprises a period identifier used for indicating the period; Before the receiving first information, the method further comprises: receiving configuration information, the configuration information comprising a correspondence between a period identifier and a period.

11. A communication method, comprising: The method comprises: sending first information, the first information being used for indicating a period for a terminal device to report channel state information, the period being determined based on channel state information reported by the terminal device; receiving channel state information sent by the terminal device according to the period; the channel state information comprises a channel quality parameter; in a case where the channel quality parameter is greater than or equal to a first threshold value, or in a case where the terminal device completes a radio resource control connection, the period indicated by the first information is a first period; or in a case where the channel quality parameter is less than the first threshold value and the channel quality parameter is greater than or equal to a second threshold value, the period indicated by the first information is a second period; the second period is less than the first period; The second period is determined based on the first period and a dynamic adjustment factor The dynamic adjustment factor is determined based on a preset first boundary minimum value, a preset second boundary minimum value, and a linear sensitivity of the channel state, the linear sensitivity of the channel state being determined based on the channel quality parameter. The dynamic adjustment factor is determined based on a preset first boundary minimum value, a preset second boundary minimum value, and a linear sensitivity of the channel state, the linear sensitivity of the channel state being determined based on the channel quality parameter.

12. The method of claim 11, wherein, the channel state information comprises a channel quality parameter; The method further comprises: sending second information, the second information being used for indicating the terminal device to terminate reporting channel state information, the second information being sent in a case where a channel quality parameter reported by the terminal device is less than a second threshold value.

13. The method of claim 12, wherein, The second information is sent in a case where channel quality parameters reported by the terminal device for k consecutive times are all less than the second threshold value, the k being an integer and the k being greater than or equal to a fifth threshold value.

14. The method according to any one of claims 11-13, characterized in that, The first information comprises a period identifier used for indicating the period; Before the sending the first information, the method further comprises: sending configuration information, the configuration information comprising a correspondence between a period identity and a period.

15. A communication system, characterized by comprising: a network device and a terminal device, the terminal device being configured to perform the method of any one of claims 1-10, and the network device being configured to perform the method of any one of claims 11-14.

16. An electronic device, comprising: comprising: a processor and a memory; the memory storing computer-executable instructions; the processor executing the computer-executable instructions stored in the memory, causing the electronic device to perform the method of any one of claims 1-14.

17. A computer-readable storage medium, the computer-readable storage medium storing a computer program, characterized in that, the computer program, when executed by a processor, implementing the method of any one of claims 1-14.

18. A chip system, characterized by comprising at least one processor and a communication interface, the communication interface and the at least one processor being interconnected by a line, the at least one processor being configured to run a computer program or instructions to perform the method of any one of claims 1-14.

19. A computer program product, characterised in that, comprising a computer program, which, when executed by a processor, causes a computer to perform the method of any one of claims 1-14.

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