Communication method, apparatus and device, chip, and storage medium

Abstract

The present application provides a communication method, apparatus and device, a chip, and a storage medium. The method comprises: a terminal device acquires first link quality, wherein the first link quality is link quality of a first cell and / or a first spatial filter within a first time period, the first link quality is used for determining a prediction result, the prediction result is related to a second cell and / or a second spatial filter on which the terminal device camps within a second time period, and an ending moment of the first time period is earlier than a starting moment of the second time period.

Description

Communication method, device, equipment, chip and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method, apparatus, device, chip and storage medium. Background Art

[0002] In related technologies, after the link quality of the currently resident cell and / or spatial filter drops to a certain level, a terminal device can trigger measurement of a candidate cell and / or candidate spatial filter, and report the measured link quality of the candidate cell and / or candidate spatial filter to a network device, so that the network device can instruct the terminal device to switch the currently resident cell and / or spatial filter based on the link quality. However, the above-mentioned cell switching and / or spatial filter switching often has a time lag, and untimely switching may lead to a decline in link performance, thereby increasing the risk of wireless link failure of the terminal device.

[0003] Summary of the Invention

[0004] The present application provides a communication method, apparatus, device, chip and storage medium.

[0005] In a first aspect, the communication method provided by the present application includes:

[0006] The terminal device obtains the first link quality, which is the link quality of the first cell and / or the first spatial filter in the first time period. The first link quality is used to determine the prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period. The end time of the first time period is earlier than the start time of the second time period.

[0007] In a second aspect, the communication method provided by this application includes:

[0008] The network device receives a first link quality from the terminal device, where the first link quality is the link quality of the first cell and / or the first spatial filter in a first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in a second time period. The end time of the first time period is earlier than the start time of the second time period.

[0009] In a third aspect, the communication method provided by this application includes:

[0010] The network device receives capability information of the terminal device, where the capability information of the terminal device is used to indicate that the terminal device supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality, where the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides during a second time period.

[0011] The first link quality is the link quality of the first cell and / or the first spatial filter in a first time period, and the end time of the first time period is earlier than the start time of the second time period.

[0012] In a fourth aspect, the present application provides a communication device, which is applied to a terminal device and includes:

[0013] The first processing unit is configured to obtain a first link quality, where the first link quality is the link quality of the first cell and / or the first spatial filter in a first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in a second time period. The end time of the first time period is earlier than the start time of the second time period.

[0014] In a fifth aspect, the present application provides a communication device, which is applied to a network device and includes:

[0015] The second receiving unit is configured to receive a first link quality from the terminal device, where the first link quality is the link quality of the first cell and / or the first spatial filter in a first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in a second time period. The end time of the first time period is earlier than the start time of the second time period.

[0016] In a sixth aspect, the present application provides a communication device, which is applied to a network device and includes:

[0017] a third receiving unit configured to receive capability information of a terminal device, where the capability information of the terminal device is used to indicate that the terminal device supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality, where the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides during a second time period;

[0018] The first link quality is the link quality of the first cell and / or the first spatial filter in a first time period, and the end time of the first time period is earlier than the start time of the second time period.

[0019] In a seventh aspect, the present application provides a communication device comprising a memory, a processor, and a transceiver. The memory is used to store a computer program; the processor is connected to the memory and is used to call and execute the computer program from the memory to implement the method of any one of the first to third aspects above; and the transceiver is used to receive and send information during the process of sending and receiving information with other external devices.

[0020] In an eighth aspect, the present application provides a chip comprising a memory, a processor, and a transceiver. The memory is used to store computer programs; the processor is connected to the memory and is used to call and execute the computer programs from the memory, so that a device equipped with the chip performs the method of any one of the first to third aspects above; and the transceiver is used to receive and send information during the process of transmitting and receiving information to and from the device or chip.

[0021] In a ninth aspect, the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, it implements the method of any one of the first to third aspects above.

[0022] In the tenth aspect, the present application provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor, which implements the method of any one of the above-mentioned first to third aspects when the instructions are executed by at least one processor.

[0023] In an eleventh aspect, the computer program provided in the present application, when executed on a computer, enables the computer to execute the method of any one of the first to third aspects above.

[0024] The present application provides a communication method, in which a terminal device can obtain a first link quality, where the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period, and the first link quality is used to determine a prediction result, which is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period, and the end time of the first time period is earlier than the start time of the second time period. In this way, the terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, so that it can directly transition from a cell and / or spatial filter with better link quality to another cell / or spatial filter with better link quality, and will not experience the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] FIG1 is a schematic diagram of a communication architecture;

[0027] Figure 2 is a schematic diagram of a neuron structure;

[0028] FIG3 is a schematic diagram of a neural network structure;

[0029] Figure 4 is a schematic diagram of a long short-term memory structure;

[0030] FIG5 is a flow chart of a communication method provided in an embodiment of the present application;

[0031] FIG6 is a first detailed flow diagram of a communication method provided in an embodiment of the present application;

[0032] FIG7 is a schematic diagram 1 of determining a prediction result provided by an embodiment of the present application;

[0033] FIG8 is a second schematic diagram of determining a prediction result provided by an embodiment of the present application;

[0034] FIG9 is a third schematic diagram of determining a prediction result provided by an embodiment of the present application;

[0035] FIG10 is a fourth schematic diagram of determining a prediction result provided by an embodiment of the present application;

[0036] FIG11 is a second detailed flow diagram of a communication method provided in an embodiment of the present application;

[0037] FIG12 is a schematic diagram of a scenario for predicting an optimal candidate cell and / or optimal beam provided by an embodiment of the present application;

[0038] FIG13 is a third detailed flow diagram of a communication method provided in an embodiment of the present application;

[0039] FIG14 is a fourth detailed flow chart of a communication method provided in an embodiment of the present application;

[0040] FIG15 is a schematic diagram of the structure of a communication device 1500 provided in an embodiment of the present application;

[0041] FIG16 is a schematic diagram of the structure of a communication device 1600 provided in an embodiment of the present application;

[0042] FIG17 is a schematic diagram of the structure of a communication device 1700 provided in an embodiment of the present application;

[0043] FIG18 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0044] FIG19 is a schematic structural diagram of a chip provided in an embodiment of the present application;

[0045] Figure 20 is a schematic block diagram of a communication system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The following will describe the technical solutions in the embodiments of this application in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] FIG1 is a schematic diagram of an application scenario of an embodiment of the present application.

[0048] As shown in Figure 1, a communication system 100 may include a terminal device 110 and a network device (NW) 120. The network device 120 may communicate with the terminal device 110 via an air interface. The terminal device 110 and the network device 120 support multi-service transmission.

[0049] It should be understood that the embodiments of the present application are only illustrative of the communication system 100, but the embodiments of the present application are not limited thereto. That is, the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), or future communication systems.

[0050] In the communication system 100 shown in Figure 1, the network device 120 may be an access network device that communicates with the terminal device 110. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 110 located within the coverage area.

[0051] The network device 120 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a wireless controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, or a network device in a future evolved Public Land Mobile Network (PLMN), etc.

[0052] The terminal device 110 may be any terminal device, including but not limited to a terminal device connected to the network device 120 or other terminal devices by wire or wireless connection.

[0053] For example, the terminal device 110 may refer to an access terminal, user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or a user apparatus. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, an IoT device, a satellite handheld terminal, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a 5G network, or a terminal device in a future evolution network, etc.

[0054] The terminal device 110 can be used for device-to-device (D2D) communication.

[0055] FIG1 exemplarily shows a network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include another number of terminal devices within its coverage area, which is not limited in this embodiment of the present application.

[0056] It should be noted that FIG1 is only an example of a system to which this application is applicable. Of course, the method shown in the embodiment of this application can also be applied to other systems. In addition, the terms "system" and "network" are often used interchangeably in this article.

[0057] It should be understood that the term "and / or" in this document simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0058] It should also be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0059] It should also be understood that the "correspondence" mentioned in the embodiments of the present application may indicate a direct or indirect correspondence between the two, or an association between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0060] It should also be understood that the “predefined” or “predefined rules” mentioned in the embodiments of the present application can be implemented by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices), and the present application does not limit its specific implementation method. For example, predefined can refer to what is defined in the protocol. It should also be understood that in the embodiments of the present application, the “protocol” may refer to a standard protocol in the field of communications, for example, it may include LTE protocols, NR protocols, and related protocols used in future communication systems, and the present application does not limit this.

[0061] To facilitate understanding of the technical solutions of the embodiments of the present application, the relevant technologies of the embodiments of the present application are described below. The following relevant technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application.

[0062] Compared with the Inter-Cell Beam Management (ICBM) in Rel.17, the standardization work of the physical layer in the L1 / L2 triggered mobility management of Rel.18 mainly focuses on the measurement and reporting of candidate cells (Candidate Cell) and / or candidate spatial filters by terminal devices, and the indication of the selected candidate cell and / or selected spatial filter by network devices through the Cell Switch Command (CSC).

[0063] The selected candidate cell is the target cell. For example, the network device may indicate the index of the selected candidate cell (Candidate Cell Index) through the CSC, so that the terminal device can implement switching to the target cell according to the index of the selected candidate cell.

[0064] The selected spatial filter is the target spatial filter. For example, the network device can indicate a unified transmission configuration indication state ID (TCI State ID) through the CSC, so that the terminal device can switch the target spatial filter according to the unified TCI State ID.

[0065] Exemplarily, after the terminal device completes the measurement of the candidate cell and / or candidate spatial filter and reports the measured link quality to the network device, the network device can instruct the terminal device to switch to the target cell and / or target spatial filter through the Media Access Control-Control Element (MAC CE) signaling of the CSC. The CSC includes at least the spatial filter information of the target cell (indicated by TCI State) and the target cell information (such as the index of the selected candidate cell).

[0066] It should be noted that when a terminal device measures a candidate cell, it can be understood that the terminal device measures the reference signal on the candidate cell. Furthermore, when a terminal device measures a candidate cell, it actually measures the spatial filter of the candidate cell. In other words, the terminal device can measure the reference signal on the spatial filter of the candidate cell.

[0067] It should also be noted that the terminal device measures the candidate cell and can obtain the cell-level link quality, such as the cell-level Reference Signal Receiving Power (RSRP), Signal to Interference plus Noise Ratio (SINR), Received Signal Strength Indicator (RSSI), Reference Signal Received Quality (RSRQ), and Channel Quality Indicator (CQI), etc.

[0068] It should also be noted that the terminal device measures the spatial filter of the candidate cell and can obtain the link quality at the spatial filter level, such as RSRP, SINR, RSSI, RSRQ, CQI, etc. at the spatial filter level.

[0069] For the measurement and reporting of candidate cells and / or candidate spatial filters, the terminal device can perform measurements in multiple candidate cells (including the current serving cell) and / or multiple candidate spatial filters configured by the network device, and provide up to M×L link qualities in one report (depending on the capabilities of the terminal device, M is the number of candidate cells, and L is the number of spatial filters for each candidate cell).

[0070] It should be noted that a large number of reference signals are required for measuring a large number of candidate cells, and the reference signal overhead is large. In addition, since the terminal device often cannot measure multiple spatial filters of multiple candidate cells at the same time, the terminal device requires more delay to measure a large number of candidate cells.

[0071] Artificial Intelligence (AI) models are capable of handling a variety of tasks. They possess the ability to self-learn and adapt, dynamically adjusting and making decisions based on environmental changes. AI models can also be referred to as Machine Learning (ML) models; the two are equivalent or interchangeable.

[0072] In practical applications, AI models can be composed of neural networks (NNs). NN is a computational model consisting of multiple interconnected neuron nodes, where the connection between nodes represents the weighted value from the input signal to the output signal, called the weight; each node performs a weighted summation on different input signals and outputs them through a specific activation function. Refer to the neuron structure diagram shown in Figure 2, where a1, a2, ..., an, and 1 are the inputs of the neuron, w1, w2, ..., wn, and b represent weights, Sum represents the summation function, f represents the activation function, and t is the output result.

[0073] Figure 3 shows a simple neural network (NN) structure consisting of an input layer, hidden layers, and an output layer. Different connections, weights, and activation functions between multiple neurons can produce different outputs, thereby fitting the mapping from input to output. Each node in the previous level is connected to all nodes in the next level. This fully connected model is also called a deep neural network (DNN). The NN shown in Figure 3 can perform spatial filter prediction in the spatial domain.

[0074] A recurrent neural network (RNN) is a type of neural network that models sequential data and has achieved remarkable success in natural language processing applications such as machine translation and speech recognition. Specifically, the neural network memorizes information from past moments and uses it in the calculation of current outputs. This means that nodes in the hidden layers are no longer disconnected but connected, and the input to a hidden layer includes not only the input layer but also the output of the previous hidden layer. Common RNN structures include long-short term memory (LSTM) and gated recurrent unit (GRU). Figure 4 shows a basic LSTM unit structure. Nonlinear activation functions, such as tanh, are often used to introduce nonlinearity into the network. The LSTM state determines which states should be retained and which should be forgotten, addressing the limitations of traditional RNNs in long-term memory.

[0075] The LSTM shown in Figure 4 can be used for time domain prediction. The present application embodiment uses LSTM as an example for illustration, but it should be understood that RNN can also be replaced by other network structures such as DNN and CNN.

[0076] A NN model can be trained and obtained through the process of constructing a dataset, training, validating, and testing. Training can be divided into offline training and online training. The embodiments of this application assume that the NN model has been trained in advance through offline training or online training. It should be understood that offline training and online training are not mutually exclusive.

[0077] Network devices can obtain static training results through offline training of datasets, which is referred to as offline training. As network devices or terminal devices use NN models, as the terminal devices further measure and / or report, the network devices can continue to collect more data and perform real-time online training to optimize the NN model parameters and achieve better inference and prediction results. After obtaining the NN model, the corresponding model output can be inferred by inputting the current information into the NN model.

[0078] It should be noted that the model output can be understood as inference or prediction. In the embodiments of the present application, inference and prediction have similar meanings and can be interchangeable.

[0079] The NN model on the terminal device side can be obtained from the network device side. For example, the network device can collect a large amount of data to build a data set, use the data set to train the NN model, and then distribute the NN model to the terminal device through NN model delivery. This type of network device can be called a network operator or network equipment provider. It should be understood that chip manufacturers can also build an Over The Top (OTT) server, and the terminal device can log in to the OTT server through an Internet link to download the appropriate NN model.

[0080] In the related art, after the link quality of the cell and / or spatial filter in which the terminal device is currently located drops to a certain level, the terminal device can trigger the measurement of the candidate cell and / or candidate spatial filter, thereby obtaining the link quality of the candidate cell and / or candidate spatial filter. The terminal device can report the link quality of the candidate cell and / or candidate spatial filter to the network device, so that the network device can instruct the terminal device to switch the cell and / or spatial filter in which the terminal device is currently located based on the link quality. However, the above-mentioned cell switching and / or spatial filter switching often has a time lag, which causes the terminal device to reside in a cell and / or spatial filter with poor link quality for a longer time, thereby causing a decline in link performance and increasing the risk of wireless link failure of the terminal device.

[0081] Based on this, an embodiment of the present application provides a communication method, in which a terminal device can obtain a first link quality, where the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period, and the first link quality is used to determine a prediction result, which is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period, and the end time of the first time period is earlier than the start time of the second time period. In this way, the terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, so that it can directly transition from a cell and / or spatial filter with better link quality to another cell / or spatial filter with better link quality, and will not experience the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0082] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be combined arbitrarily with the technical solutions of the embodiments of the present application as optional solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0083] FIG5 is a flow chart of a communication method provided in an embodiment of the present application. As shown in FIG5 , the method may include the following steps.

[0084] S510. The terminal device obtains a first link quality, where the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period. The end time of the first time period is earlier than the start time of the second time period.

[0085] It should be noted that in the embodiment of the present application, the link quality may be L1 (Layer 1)-RSRP, L1-SINR, L1-RSSI, L1-RSRQ, and CQI, etc., which is not limited in the embodiment of the present application.

[0086] Exemplarily, the first time period may be a historical time period.

[0087] Exemplarily, the first cell may be a candidate cell, and the first spatial filter may be a candidate spatial filter.

[0088] It should be noted that the first spatial filter may be a spatial filter on the first cell, or a spatial filter of other cells except the first cell, and this embodiment of the present application does not limit this.

[0089] It should also be noted that the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period. It can be understood that the first link quality is the link quality obtained by the terminal device after measuring the first cell and / or the first spatial filter in the first time period.

[0090] It should also be noted that the terminal device measures the first cell within the first time period, which can be understood as the terminal device measuring the spatial filter of the first cell within the first time period.

[0091] Furthermore, when there are multiple spatial filters in the first cell, the terminal device measures the first cell within the first time period to obtain the first link quality. It can be understood that the terminal device measures multiple spatial filters within the first time period and then linearly averages the multiple link qualities obtained to obtain the first link quality.

[0092] Exemplarily, the first link quality is the link quality obtained after the terminal device measures the first cell and / or the first spatial filter every first period.

[0093] The first period is a period for the terminal device to measure the first cell and / or the first spatial filter within the first time period.

[0094] Exemplarily, the first link quality is the link quality obtained by the terminal device after measuring the first cell and / or the first spatial filter at the first moment.

[0095] The first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0096] The first moment may be one moment or multiple moments, which is not limited in the embodiment of the present application.

[0097] It should be noted that the number of first cells can be one or more; the number of first spatial filters can be one or more, and this embodiment of the present application does not limit this.

[0098] It should also be noted that, when there are multiple first cells and / or multiple first spatial filters, the first link quality is the link quality of each of the multiple cells and / or multiple spatial filters during the first time period. In other words, the first link quality is the link quality obtained by the terminal device after measuring the multiple cells and / or multiple spatial filters during the first time period.

[0099] Exemplarily, when there are multiple first cells and / or multiple first spatial filters, the first link quality is the link quality obtained after the terminal device measures multiple cells and / or multiple spatial filters respectively at intervals of the first period.

[0100] Exemplarily, when there are multiple first cells and / or multiple first spatial filters, the first link quality is the link quality obtained by the terminal device after measuring multiple cells and / or multiple spatial filters respectively at the first moment.

[0101] It should be understood that the terminal device measures the first cell and / or the first spatial filter within the first time period, which can be understood as the terminal device measuring the third signal within the first time period, and the third signal is a reference signal on the first cell and / or the first spatial filter.

[0102] Based on this, in some embodiments, the first link quality can be obtained based on the terminal device measuring the third signal within the first time period.

[0103] The number of the third signals may be one or more, which is not limited in the embodiment of the present application.

[0104] Exemplarily, the terminal device may measure the third signal at intervals of the first period to obtain the first link quality.

[0105] Exemplarily, the terminal device may measure the third signal at the first moment to obtain the first link quality.

[0106] It should be noted that the third signal may include a synchronization signal block (Synchronization Signal and PBCH Block, SSB) and / or a channel state information-reference signal (Channel State Information-Reference Signal, CSI-RS).

[0107] Through this method, the terminal device can measure the third signal within the first time period to obtain the first link quality, so that it can subsequently perform cell switching and / or spatial filter switching in a timely manner based on the prediction results determined by the first link quality, thereby avoiding performance degradation caused by untimely cell switching and / or untimely spatial filter switching, and reducing the risk of wireless link failure.

[0108] Exemplarily, the second time period may be a time period after the historical time period. For example, the second time period may be a future time period.

[0109] It should also be noted that the second spatial filter may be a spatial filter on the second cell, or a spatial filter of other cells except the second cell, and this embodiment of the present application does not limit this.

[0110] In some embodiments, at least some of the second cells are the same as at least some of the first cells; or, any cell in the second cells is different from any cell in the first cells.

[0111] It should be noted that at least part of the cells in the second cell may be one cell in the second cell, or multiple cells (not all cells) in the second cell, or all cells in the second cell. This embodiment of the present application does not limit this.

[0112] It should be understood that at least part of the first cell is similar to at least part of the second cell, and a detailed description thereof will be omitted here.

[0113] Exemplarily, the first cell includes cells with indexes of 0, 1, and 2, and the second cell includes cells with indexes of 1, 3, and 4, and both the first cell and the second cell include the cell with index 1.

[0114] Exemplarily, the first cells include cells with indexes 0, 1, and 2, and the second cells include cells with indexes 3, 4, and 5, and any cell in the second cells is different from any cell in the first cells.

[0115] In some embodiments, at least some of the second spatial filters are the same as at least some of the first spatial filters; or, any of the second spatial filters is different from any of the first spatial filters.

[0116] It should be understood that the exemplary description of the first spatial filter and the second spatial filter is similar to that of the first cell and the second cell, and will not be repeated here.

[0117] It should be noted that the number of second cells can be one or more; the number of second spatial filters can be one or more, and this embodiment of the present application does not limit this.

[0118] It should also be noted that when there are multiple second cells and / or multiple second spatial filters, the second time period can be divided into multiple time periods. At this time, the second cell and / or second spatial filter where the terminal device resides in the second time period can be understood as a cell and / or a spatial filter where the terminal device resides in each time period in the multiple time periods.

[0119] In some embodiments, the prediction results may include one or more of the following:

[0120] The index of the second cell;

[0121] the dwell time of the second cell;

[0122] link quality of the second cell during the dwell time in the second cell;

[0123] the index of the second spatial filter;

[0124] the dwell time of the second spatial filter;

[0125] The link quality of the second spatial filter during the dwell time of the second spatial filter.

[0126] It should be noted that when there are multiple second cells, the index of the second cell may include the index of each cell in the second cell, and the residence time of the second cell may include the residence time of each cell in the second cell; the link quality of the second cell during the residence time in the second cell may include the link quality of each cell in each second cell during the residence time in the respective cell.

[0127] Furthermore, the residence time of each cell in the second cell can be understood as the time of the second time period occupied by the terminal device when it resides in each cell in the second cell.

[0128] It should be noted that when there are multiple second spatial filters, the index of the second spatial filter may include the index of each spatial filter in the second spatial filters, and the residence time of the second spatial filter may include the residence time of each spatial filter in the second spatial filters; the link quality of the second spatial filter during the residence time of the second spatial filter may include the link quality of each spatial filter in each of the two spatial filters during the residence time of the respective spatial filters.

[0129] Furthermore, the dwell time of each spatial filter in the second spatial filter may be understood as the time of the second time period occupied by the terminal device when it resides in each spatial filter in the second spatial filter.

[0130] It should be noted that, for downlink transmission, the second spatial filter may refer to a downlink transmit spatial filter and / or a downlink receive spatial filter; for uplink transmission, the second spatial filter may refer to an uplink transmit spatial filter and / or an uplink receive spatial filter.

[0131] It should also be noted that, when the uplink transmission and the downlink transmission have spatial filter symmetry, for at least some filters in the second spatial filter, the residence time of the downlink spatial filter and the uplink spatial filter is consistent; when the uplink transmission and the downlink transmission do not have spatial filter symmetry, for at least some filters in the second spatial filter, the residence time of the downlink spatial filter and the uplink spatial filter may be inconsistent.

[0132] By using this method, when the prediction result includes the residence time of the second cell and / or the residence time of the second spatial filter, the number of predictions of the terminal device for the future resided cell and / or spatial filter can be reduced.

[0133] An embodiment of the present application provides a communication method, in which a terminal device can obtain a first link quality, where the first link quality is the link quality of a first cell and / or a first spatial filter in a first time period, and the first link quality is used to determine a prediction result, which is related to a second cell and / or a second spatial filter where the terminal device resides in a second time period, and the end time of the first time period is earlier than the start time of the second time period. In this way, the terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, thereby being able to directly transition from a cell and / or spatial filter with better link quality to another cell and / or spatial filter with better link quality, without experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0134] Based on S510, after the terminal device obtains the first link quality, it can determine the prediction result based on the first link quality; or, the terminal device can send the first link quality to the network device, and determine the prediction result through the network device.

[0135] 6 to 11 , the detailed process of performing cell switching and / or spatial filter switching by the terminal device based on two determination methods of the prediction results will be described below.

[0136] FIG6 is a detailed flow chart of a communication method provided in an embodiment of the present application. As shown in FIG6 , the method may include the following steps.

[0137] S610. The terminal device obtains a first link quality.

[0138] Among them, the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period. The first link quality is used to determine the prediction result. The prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period. The end time of the first time period is earlier than the start time of the second time period.

[0139] S620. The terminal device determines a prediction result based on the first link quality.

[0140] There are several possible implementation methods for the terminal device to determine the prediction result.

[0141] In one possible implementation, the terminal device may determine the mapping relationship between the link quality of the cell and / or spatial filter in the first time period and the preset prediction result; the terminal device determines the prediction result based on the first link quality and the mapping relationship.

[0142] It should be noted that the mapping relationship can be predefined or set in other ways, and the embodiments of the present application do not limit this.

[0143] Through this method, the terminal device can determine the prediction result based on the first link quality and the mapping relationship, so that the cell switching and / or spatial filter switching can be performed in a timely manner based on the prediction result, thereby avoiding the performance degradation caused by untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0144] Another possible implementation manner is that the terminal device determines the prediction result based on the first link quality, which may include: the terminal device inputs the first link quality into a first model to determine the prediction result.

[0145] Exemplarily, the first model may be a trained model.

[0146] Exemplarily, the first model may be a DNN model, an LSTM model, or other models, which is not limited in the embodiments of the present application.

[0147] It should be noted that the terminal device inputs the first link quality into the first model, which can be understood as the terminal device inputting the first link quality into the first model according to a fixed sorting method of the first model input positions.

[0148] Exemplarily, the terminal device may input the first link quality into the first model in ascending order of the index of each moment in the first moment.

[0149] Exemplarily, the terminal device may input the first link quality into the first model in ascending order of the index of each cell in the first cell and / or the index of each spatial filter in the first spatial filter.

[0150] Through this method, the terminal device can input the first link quality into the first model to determine the prediction result, so that the cell switching and / or spatial filter switching can be performed in a timely manner based on the prediction result, thereby avoiding the performance degradation caused by untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0151] In another possible implementation, the terminal device determines a prediction result based on the first link quality, which may include: the terminal device inputting the first link quality and first information into a first model to determine the prediction result, where the first information may include one or more of the following:

[0152] an index of the first cell;

[0153] the index of the first spatial filter;

[0154] A first period, where the first period is a period during which the terminal device measures the first cell and / or the first spatial filter within a first time period;

[0155] The index of the first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0156] Exemplarily, the terminal device may input the link quality corresponding to the index of each moment in the first moment into the first model (in no particular order), and the model outputs a prediction result.

[0157] Exemplarily, the terminal device may input the link quality corresponding to the index of each cell in the first cell and / or the index of each spatial filter in the first spatial filter into the first model (in no particular order), and the model outputs a prediction result.

[0158] FIG7 is a schematic diagram of a method for determining a prediction result provided by an embodiment of the present application. As shown in FIG7 , taking the first model as a DNN model as an example, the DNN model may include an input layer, a hidden layer, and an output layer. The terminal device may input the index of the first cell, the index of the first spatial filter, the first period, the index of the first moment, and the first link quality into the DNN model, and the model outputs the index of the second cell, the residence time of the second cell, the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter, the residence time of the second spatial filter, and the link quality of the second spatial filter during the residence time of the second spatial filter.

[0159] Figure 8 is a second schematic diagram of determining a prediction result provided by an embodiment of the present application. As shown in Figure 8, taking the first model as an LSTM model as an example, the LSTM model can be considered to have K moments extended in time as input, which is equivalent to a cascade of K LSTM units, each of which is the index of the first cell, the index of the first spatial filter, and the link quality at a certain moment in the past.

[0160] It should be noted that the terminal device can input the index of the first cell, the index of the first spatial filter and the corresponding link quality at each moment from the 0th moment to the K-1th moment in the past into the LSTM model, and the model outputs the index of the second cell, the residence time of the second cell, the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter, the residence time of the second spatial filter, and the link quality of the second spatial filter during the residence time of the second spatial filter.

[0161] Through this method, the terminal device can input the first link quality and the first information into the first model to determine the prediction result, so that the cell switching and / or spatial filter switching can be performed in a timely manner based on the prediction result, thereby avoiding the performance degradation caused by untimely cell switching and / or untimely spatial filter switching, and reducing the risk of wireless link failure.

[0162] Exemplarily, as shown in FIG9 , the terminal device can measure the first cell and / or the first spatial filter at time 1, time 2…, time N (N is a positive integer) in the first time period, respectively, to obtain the first link quality, and based on the first link quality, obtain the index of the second cell (such as cell 1 and cell 2) where the terminal device resides in the second time period, the residence time of the second cell (such as the residence time T1 of cell 1 and the residence time T2 of cell 2), the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter (such as spatial filter 1 and spatial filter 2 of cell 1, spatial filter 3 of cell 2), the residence time of the second spatial filter (such as the residence time T1 of spatial filter 1 and the residence time T2 of cell 2), the residence time of the second spatial filter (such as the residence time T2 of spatial filter 1), the residence time of the second spatial filter (such as the residence time T1 of spatial filter 1 and the residence time T2 of cell 2), the residence time of the second spatial filter (such as the residence time T2 of spatial filter 1). 1,1 , the dwell time T of spatial filter 21,2 and the dwell time T of spatial filter 3 2,1 ), the link quality of the second spatial filter during the residence time of the second spatial filter.

[0163] It should be noted that the second cell and / or second spatial filter where the terminal device resides during the second time period may be the optimal cell and / or spatial filter, may be the cell and / or spatial filter located in the second position,…, or may be the cell and / or spatial filter located in the Dth position, and this embodiment of the present application does not limit this.

[0164] Exemplarily, as shown in Figure 10, the terminal device can measure the first cell and / or the first spatial filter at time 1, time 2..., time N in the first time period respectively to obtain the first link quality, and based on the first link quality, obtain the index of the second cell (such as the optimal cell 1, cell 2 and cell 3; and also such as cell 4 and cell 5 located at the Dth position) where the terminal device resides in the second time period, the residence time of the second cell (such as the residence time T1 of cell 1, the residence time T2 of cell 2 and the residence time T3 of cell 3; and also such as the residence time T4 of cell 4 and the residence time T5 of cell 5), the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter (such as spatial filter 1 and spatial filter 2 of cell 1, spatial filter 3 of cell 2, spatial filter 4 and spatial filter 5 of cell 3; and also such as spatial filter 6 and spatial filter 7 of cell 4, spatial filter 8 and spatial filter 9 of cell 5), the residence time of the second spatial filter (such as the residence time T1 of spatial filter 1, the residence time T2 of cell 2 and the residence time T3 of cell 3; and also such as ... 1,1 , the dwell time T of spatial filter 2 1,2 , the dwell time T of spatial filter 3 2,1 , the dwell time T of spatial filter 4 3,1 , the dwell time T of spatial filter 5 3,2 Another example is the dwell time T of the spatial filter 6 4,1 , the dwell time T of spatial filter 7 4,2 , the dwell time T of the spatial filter 8 5,1 , the dwell time T of the spatial filter 9 5,2 ), the link quality of the second spatial filter during the dwell time of the second spatial filter.

[0165] In some embodiments, when the accuracy of the first model is less than a first threshold, and / or the confidence of the first model is less than a second threshold, the terminal device does not use the first model to obtain a prediction result.

[0166] It should be noted that the first threshold value may be a predefined parameter value or a parameter value set in other ways, and this embodiment of the present application does not limit this.

[0167] It should also be noted that the second threshold value can be a predefined parameter value or a parameter value set in other ways, and the embodiments of the present application are not limited to this.

[0168] It should be understood that when the accuracy of the first model is less than the first threshold and / or the confidence of the first model is less than the second threshold, the terminal device does not use the first model to obtain the prediction result. It can be understood that the terminal device suspends or turns off the prediction function of the first model and falls back to the measurement-based mobility solution. That is, when the accuracy of the first model is less than the first threshold and / or the confidence of the first model is less than the second threshold, the terminal device triggers the measurement of the candidate cell and / or candidate spatial filter after the link quality of the currently resident cell and / or spatial filter drops to a certain level, and reports the measured link quality of the candidate cell and / or candidate spatial filter to the network device, so that the network device can instruct the terminal device to switch the currently resident cell and / or spatial filter based on the link quality.

[0169] Through this method, when the accuracy of the first model is less than the first threshold and / or the confidence of the first model is less than the second threshold, the prediction function of the first model can be suspended or turned off, and the measurement-based mobility scheme can be reverted to, thereby ensuring the accuracy of cell switching and / or spatial filter switching of the terminal device.

[0170] In some embodiments, the network device may send fourth information to the terminal device, and the fourth information is carried through Radio Resource Control (RRC) signaling and / or MAC CE signaling, and the fourth information is used to indicate the shutdown or suspension of the first model; the terminal device obtains the prediction result based on the fourth information without using the first model.

[0171] Accordingly, the terminal device can receive the fourth information from the network device.

[0172] Through this method, when the fourth information is used to indicate turning off or suspending the first model, the prediction function of the first model can be turned off or suspended, and fall back to the measurement-based mobility scheme, thereby ensuring the accuracy of cell switching and / or spatial filter switching of the terminal device.

[0173] S630: The terminal device sends the prediction result to the network device.

[0174] Accordingly, the network device may receive the prediction result from the terminal device.

[0175] The terminal device may report (i.e., send) the prediction results to the network device periodically or semi-continuously according to the reporting period and offset configured by the network device; alternatively, the terminal device may report the prediction results to the network device non-periodically.

[0176] It should be noted that, for semi-continuous reporting, the terminal device needs to report the prediction result to the network device after receiving the activation instruction indicated by the network device.

[0177] It should also be noted that, for non-periodic reporting, the network device may send downlink control information (DCI) signaling to the terminal device, thereby triggering the terminal device to report the prediction result.

[0178] There are two ways for the terminal device to report the prediction results to the network device.

[0179] In one possible implementation method, the terminal device can report to the network device the index of the second cell, the residence time of the second cell, the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter, the residence time of the second spatial filter, and the link quality of the second spatial filter during the residence time of the second spatial filter.

[0180] Exemplarily, the index of the second cell may be a physical cell identifier (PCI), a candidate cell index (Candidate Cell Index), or a cell index configured by the network device for the terminal device to reside in the second time period.

[0181] Exemplarily, the index of the second spatial filter may use a resource index in the NR system, such as a synchronization signal block resource index (SSB Resource Index, SSBRI) and / or a CSI-RS resource index (CSI-RS Resource Index, CRI).

[0182] Taking the link quality as RSRP as an example, Table 1 shows a reporting format for the terminal device to report the prediction result to the network device.

[0183] Table 1

[0184] As shown in Table 1, PCI#1, PCI#2, ..., PCI#P can represent the index of the second cell, cell-level residence time#1, cell-level residence time#2, ..., cell-level residence time#P can represent the residence time of the second cell, cell-level RSRP#1, cell-level RSRP#2, ..., cell-level RSRP#P can represent the link quality of the second cell during the residence time of the second cell, CRI and / or SSBRI#1, CRI and / or SSBRI#2, ..., CRI and / or SSBRI#1 can represent the link quality of the second cell during the residence time of the second cell, BRI#K*P can represent the index of the second spatial filter, beam-level dwell time #1, beam-level dwell time #2, ..., beam-level dwell time #K*P can represent the dwell time of the second spatial filter, and beam-level RSRP#1, beam-level differential RSRP#2, ..., beam-level differential RSRP#K*P can represent the link quality of the second spatial filter during the dwell time of the second spatial filter. P represents the number of second cells, and K represents the number of spatial filters in each second cell. The number of K can be different in each second cell.

[0185] Through this method, the network device can obtain the dwell time of the second cell and the dwell time of the second spatial filter. Based on the dwell time of the second cell and the dwell time of the second spatial filter, the network device can obtain the optimal service time for the second cell and the second spatial filter, thereby configuring the terminal device to switch to the second cell and / or the second spatial filter in advance, reducing the delay of cell switching and / or spatial filter switching.

[0186] In another possible implementation method, the terminal device can report to the network device the link quality of the second cell during the residence time of the second cell, the index of the second spatial filter, the residence time of the second spatial filter, and the link quality of the second spatial filter during the residence time of the second spatial filter.

[0187] Exemplarily, the index of the second cell may be a PCI, a candidate cell index, or a cell index configured by the network device for the terminal device to reside in the second time period.

[0188] Exemplarily, the index of the second spatial filter may use a resource index in the NR system, such as CRI and / or SSBRI.

[0189] Exemplarily, when the network device configures the SSB resources and / or CSI-RS resources of the second cell into a resource pool (or resource set) specifically for multi-cell mobility, the SSBRI and / or CRI can be used to characterize not only the SSB resources and / or CSI-RS resources themselves, but also the fact that the SSB resources and / or CSI-RS resources come from the second cell. Therefore, the terminal device does not need to report the index of the second cell and the residence time of the second cell, but instead reports the SSBRI and / or CRI (i.e., the index of the second spatial filter), so that the network device can infer the index of the second cell corresponding to the second spatial filter through the CRI and / or SSBRI, and infer the residence time of the second cell through the residence time of the second spatial filter.

[0190] Taking RSRP as an example of link quality, Table 2 shows another reporting format for the terminal device to report the prediction result to the network device.

[0191] Table 2

[0192] As shown in Table 2, CRI and / or SSBRI#1, CRI and / or SSBRI#2, ..., CRI and / or SSBRI#K*P can represent the index of the second spatial filter, beam-level dwell time #1, beam-level dwell time #2, ..., beam-level dwell time #K*P can represent the dwell time of the second spatial filter, cell-level RSRP#1, cell-level RSRP#2, ..., cell-level RSRP#P can represent the link quality of the second cell during the dwell time of the second cell, beam-level RSRP#1, beam-level differential RSRP#2, ..., beam-level differential RSRP#K*P can represent the link quality of the second spatial filter during the dwell time of the second spatial filter.

[0193] The terminal device does not report the index of the second cell and the residence time of the second cell. The network device can infer the index of the second cell corresponding to the second spatial filter through CRI and / or SSBRI (such as CRI and / or SSBRI#1), and infer the residence time of the second cell through the beam-level residence time (such as beam-level residence time #1).

[0194] Through this method, the network device can obtain the dwell time of the second cell and the dwell time of the second spatial filter. Based on the dwell time of the second cell and the dwell time of the second spatial filter, the network device can obtain the optimal service time for the second cell and the second spatial filter, thereby configuring the terminal device to switch to the second cell and / or the second spatial filter in advance, reducing the delay of cell switching and / or spatial filter switching.

[0195] It should be noted that when the second spatial filter is a downlink transmit spatial filter, the index of the second spatial filter can be represented by SSBRI and / or CRI; when the second spatial filter is a downlink transmit receive spatial filter, the index of the second spatial filter can be represented by Beam (pair).

[0196] Based on S630, after the network device receives the prediction results from the terminal device, it can directly instruct the terminal device to perform cell switching and / or spatial filter switching, that is, execute S640; it can also instruct the terminal device to perform cell switching and / or spatial filter switching based on the prediction results, that is, execute S650.

[0197] S640: The network device sends second information to the terminal device based on the prediction result, where the second information is used by the terminal device to perform cell switching and / or spatial filter switching.

[0198] Accordingly, the terminal device may receive second information from the network device, where the second information is obtained based on the prediction result.

[0199] The second information may be used to indicate one or more of the following:

[0200] The index of the third cell;

[0201] the dwell time of the third cell;

[0202] the index of the third spatial filter;

[0203] the dwell time of the third spatial filter;

[0204] The third cell is one or more of the second cells, and the third spatial filter is one or more of the second spatial filters.

[0205] In some embodiments, the second information may be carried via MAC CE signaling or DCI signaling.

[0206] Exemplarily, the dwell time of the third cell and / or the dwell time of the third spatial filter can be carried through MAC CE signaling. If the network device configures the minimum unit of the dwell time (i.e., the minimum dwell time) in advance through RRC signaling, the MAC CE can indicate that the third cell or the third spatial filter resides for N minimum dwell times. For example, if the network device configures the minimum unit of the dwell time to be 5ms, then through the N minimum dwell times indicated by the MAC CE, the dwell time of the third cell or the third spatial filter can be obtained as 5*N ms.

[0207] Exemplarily, the dwell time of the third cell and / or the dwell time of the third spatial filter may be carried via DCI signaling. For example, the network device may indicate the dwell time of the third cell and / or the dwell time of the third spatial filter via DCI format 1_1 or 1_2. For another example, the network device may configure possible dwell time lengths, such as {5ms, 10ms, 15ms, 50ms}, via RRC signaling, corresponding to the code points {00}, {01}, {10}, and {11} of the 2-bit field in the DCI signaling, respectively.

[0208] In some embodiments, the terminal device may perform cell switching and / or spatial filter switching based on the second information.

[0209] It should be noted that after the residence time of the current resident cell ends, the terminal device can switch to the next indicated optimal resident cell and stay for a corresponding period of time based on the second information indicated by the network device; and / or, after the residence time of the current resident spatial filter ends, the terminal device can switch to the next indicated optimal resident spatial filter and stay for a corresponding period of time based on the second information indicated by the network device.

[0210] Through this method, when the second information is used to indicate the residence time of the third cell and / or the residence time of the third spatial filter, the terminal device can switch to the next indicated optimal residence cell and / or optimal residence spatial filter and stay for a corresponding period of time based on the second information indicated by the network device after the residence time of the current residence cell and / or residence spatial filter ends, thereby reducing the frequent issuance of cell switching and / or spatial filter switching indication information.

[0211] S650: The network device sends third information to the terminal device, where the third information is used to instruct the terminal device to perform cell switching and / or spatial filter switching based on the prediction result.

[0212] Accordingly, the terminal device can receive the third information from the network device.

[0213] It should be noted that the network device has sufficient resources to accommodate uplink and downlink transmissions of the terminal device during the residence time of the second cell and / or the residence time of the second spatial filter.

[0214] Through this method, the terminal device can execute a cell switching and / or spatial filter switching scheme without direct instruction from the network device, that is, after the residence time of the current resident cell and / or resident spatial filter ends, the terminal device switches to the next indicated optimal resident cell and / or optimal resident spatial filter based on the prediction result and stays for the corresponding length of time, thereby reducing the signaling overhead.

[0215] FIG11 is a second detailed flow chart of a communication method provided in an embodiment of the present application. As shown in FIG11 , the method may include the following steps.

[0216] S1110. The terminal device sends a first link quality to the network device.

[0217] Accordingly, the network device may receive the first link quality from the terminal device.

[0218] Among them, the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period. The first link quality is used to determine the prediction result. The prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period. The end time of the first time period is earlier than the start time of the second time period.

[0219] In some embodiments, the terminal device may send first information to the network device, where the first information and the first link quality are used to determine the prediction result, and the first information includes one or more of the following:

[0220] an index of the first cell;

[0221] the index of the first spatial filter;

[0222] A first period, where the first period is a period during which the terminal device measures the first cell and / or the first spatial filter within a first time period;

[0223] The index of the first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0224] Table 3 shows a reporting format for a terminal device to report the first link quality and first information to a network device. The terminal device can report the first link quality and first information of one instance in one reporting instance. That is, in this case, the number of first moments is one, and the first link quality is the link quality of the first cell and / or the first spatial filter at the first moment.

[0225] Table 3

[0226] As shown in Table 3, PCI#1, PCI#2, ..., PCI#Q may represent the index of the first cell, CRI and / or SSBRI#1, CRI and / or SSBRI#2, ..., CRI and / or SSBRI#L*Q may represent the index of the first spatial filter, and RSRP#1, Differential RSRP#2, ..., Differential RSRP#L*Q may represent the first link quality. Q represents the number of first cells, and L represents the number of spatial filters in each of the first cells. The number of Ls may be different for each of the first cells.

[0227] Through this method, the terminal device can report the first link quality and first information of an instance in a reporting instance, so that the network device can obtain the first link quality and the first information as soon as possible, and subsequently obtain the prediction result based on the first link quality and the first information as early as possible, thereby promptly instructing the terminal device to perform cell switching and / or spatial filter switching.

[0228] Table 4 shows another reporting format for a terminal device to report the first link quality and first information to a network device. The terminal device can report the first link quality and first information of multiple instances in one reporting instance. That is, in this case, the number of first moments is multiple, and the first link quality is the link quality of the first cell and / or the first spatial filter at multiple first moments.

[0229] Table 4

[0230] As shown in Table 4, PCI#1, PCI#2, ..., PCI#R*Q can represent the index of the first cell, CRI and / or SSBRI#1, CRI and / or SSBRI#2, ..., CRI and / or SSBRI#R*L*Q can represent the index of the first spatial filter, RSRP#1, differential RSRP#2, ..., differential RSRP#R*L*Q can represent the first link quality; where R represents the quantity at the first moment.

[0231] Through this method, the terminal device can report the first link quality and first information of multiple instances in one reporting instance, thereby reducing the number of reports of the terminal device and reducing the occupancy of uplink resources.

[0232] S1120. The network device determines a prediction result based on the first link quality.

[0233] There are several possible implementation methods for the network device to determine the prediction result.

[0234] In one possible implementation, the network device may determine a mapping relationship between the link quality of the cell and / or spatial filter in a first time period and a preset prediction result; the network device determines the prediction result based on the first link quality and the mapping relationship.

[0235] It should be noted that the mapping relationship can be predefined or set in other ways, and the embodiments of the present application do not limit this.

[0236] Through this method, the network device can determine the prediction result based on the first link quality and the mapping relationship, so that it can subsequently promptly instruct the terminal device to perform cell switching and / or spatial filter switching based on the prediction result, thereby avoiding the performance degradation of the terminal device due to untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0237] Another possible implementation manner is that the network device determines the prediction result based on the first link quality, which may include: the network device inputs the first link quality into the second model to determine the prediction result.

[0238] Exemplarily, the second model may be a trained model.

[0239] Exemplarily, the second model may be a DNN model, an LSTM model, or other models, which is not limited in the embodiments of the present application.

[0240] It should be noted that the first model and the second model can be the same model or different models, and the embodiments of the present application do not limit this.

[0241] It should be noted that the network device inputs the first link quality into the second model, which can be understood as the network device inputs the first link quality into the second model according to a fixed sorting method of the input positions of the second model.

[0242] Exemplarily, the network device may input the first link quality into the second model in ascending order of the index of each moment in the first moment, wherein the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0243] Exemplarily, the network device may input the first link qualities into the second model in ascending order of the index of each cell in the first cells and / or the index of each spatial filter in the first spatial filters.

[0244] Through this method, the network device can input the first link quality into the second model to determine the prediction result, so that based on the prediction result, the terminal device can be promptly instructed to perform cell switching and / or spatial filter switching, thereby avoiding the performance degradation of the terminal device due to untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0245] In another possible implementation, the network device determines a prediction result based on the first link quality, which may include: the network device inputs the first link quality and first information into a second model to determine the prediction result, where the first information may include one or more of the following:

[0246] an index of the first cell;

[0247] the index of the first spatial filter;

[0248] A first period, where the first period is a period during which the network device measures the first cell and / or the first spatial filter within a first time period;

[0249] An index of a first moment, where the first moment is a moment when the network device measures the first cell and / or the first spatial filter within a first time period.

[0250] In some embodiments, the first information is sent by the terminal device.

[0251] Exemplarily, the network device may input the link quality corresponding to the index of each moment in the first moment into the second model (in no particular order), and the model outputs a prediction result.

[0252] Exemplarily, the network device may input the link quality corresponding to the index of each cell in the first cell and / or the index of each spatial filter in the first spatial filter into the second model (in no particular order), and the model outputs a prediction result.

[0253] Through this method, the network device can input the first link quality and the first information into the second model to determine the prediction result, so that based on the prediction result, the terminal device can be promptly instructed to perform cell switching and / or spatial filter switching, thereby avoiding the performance degradation of the terminal device due to untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0254] In some embodiments, when the accuracy of the second model is less than a third threshold, and / or the confidence of the second model is less than a fourth threshold, the network device does not use the second model to obtain a prediction result.

[0255] It should be noted that the third threshold value may be a predefined parameter value or a parameter value set in other ways, and this embodiment of the present application does not limit this.

[0256] It should also be noted that the fourth threshold value can be a predefined parameter value or a parameter value set in other ways, and this embodiment of the present application does not limit this.

[0257] It should be understood that when the accuracy of the second model is less than the third threshold and / or the confidence of the second model is less than the fourth threshold, the network device does not use the second model to obtain the prediction result. It can be understood that the network device suspends or turns off the prediction function of the second model and falls back to the measurement-based mobility solution. That is, when the accuracy of the second model is less than the third threshold and / or the confidence of the second model is less than the fourth threshold, the terminal device triggers the measurement of the candidate cell and / or candidate spatial filter after the link quality of the currently resident cell and / or spatial filter drops to a certain level, and reports the measured link quality of the candidate cell and / or candidate spatial filter to the network device, so that the network device can instruct the terminal device to switch the currently resident cell and / or spatial filter based on the link quality.

[0258] Through this method, when the accuracy of the second model is less than the third threshold and / or the confidence of the second model is less than the fourth threshold, the prediction function of the second model can be suspended or turned off, and the measurement-based mobility scheme can be reverted to, thereby ensuring the accuracy of cell switching and / or spatial filter switching of the terminal device.

[0259] S1130. The network device sends fifth information to the terminal device based on the prediction result. The fifth information is used by the terminal device to perform cell switching and / or spatial filter switching.

[0260] Accordingly, the terminal device can receive the fifth information from the network device.

[0261] The fifth information may be used to indicate one or more of the following:

[0262] The index of the fourth cell;

[0263] the dwell time of the fourth cell;

[0264] the index of the fourth spatial filter;

[0265] the dwell time of the fourth spatial filter;

[0266] The fourth cell is one or more of the second cells, and the fourth spatial filter is one or more of the second spatial filters.

[0267] It should be noted that, since the fifth information is sent by the network device based on the prediction result, and the prediction result is determined by the network device based on the first link quality, the fifth information is related to the first link quality.

[0268] It should also be noted that at least some of the fourth cells are the same as at least some of the third cells; or, any cell in the fourth cells is different from any cell in the third cells.

[0269] It should be understood that at least part of the fourth cell may be one cell in the fourth cell, or multiple cells (not all cells) in the fourth cell, or all cells in the fourth cell. This embodiment of the present application does not limit this.

[0270] At least part of the third cell is similar to at least part of the fourth cell, and will not be described in detail here.

[0271] In some embodiments, the fifth information may be carried via MAC CE signaling or DCI signaling.

[0272] It should be noted that the exemplary description of the fifth information being carried through MAC CE signaling or DCI signaling is similar to that of the second information and will not be repeated here.

[0273] In some embodiments, the terminal device may perform cell switching and / or spatial filter switching based on the fifth information.

[0274] It should be noted that after the residence time of the current resident cell ends, the terminal device can switch to the next indicated optimal resident cell and stay there for a corresponding period of time based on the fifth information indicated by the network device; and / or, after the residence time of the current resident spatial filter ends, the terminal device can switch to the next indicated optimal resident spatial filter and stay there for a corresponding period of time based on the fifth information indicated by the network device.

[0275] Through this method, when the fifth information is used to indicate the residence time of the fourth cell and / or the residence time of the fourth spatial filter, the terminal device can switch to the next indicated optimal residence cell and / or optimal residence spatial filter and stay for a corresponding period of time based on the fifth information indicated by the network device after the residence time of the current residence cell and / or residence spatial filter ends, thereby reducing the frequent issuance of cell switching and / or spatial filter switching indication information.

[0276] Based on Figures 6 to 11, the terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction results determined by the first link quality, so that it can directly transition from a cell and / or spatial filter with better link quality to another cell / or spatial filter with better link quality, without experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0277] In some embodiments, the terminal device may send capability information of the terminal device to the network device, where the capability information of the terminal device is used to indicate that the terminal device supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality.

[0278] Accordingly, the network device can receive the capability information of the terminal device.

[0279] In some embodiments, the capability information of the terminal device includes one or more of the following:

[0280] a maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell;

[0281] a maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter;

[0282] a maximum number of first signals supported by the terminal device for measurement, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter;

[0283] a maximum length of a second period supported by the terminal device, where the second period is a period during which the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0284] a maximum number of second moments supported by the terminal device, the second moment being a moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0285] a maximum number of sixth cells supported by the terminal device, where the sixth cell refers to a cell in which the terminal device can reside within the second time period, and the sixth cell includes the second cell;

[0286] a maximum number of sixth spatial filters supported by the terminal device, where the sixth spatial filter refers to a spatial filter in which the terminal device can reside within the second time period, and the sixth spatial filter includes the second spatial filter;

[0287] The terminal device supports obtaining the dwell time of the sixth cell;

[0288] The terminal device supports obtaining the dwell time of the sixth spatial filter;

[0289] The terminal device supports obtaining the maximum length of the residence time of the sixth cell.

[0290] It should be noted that the fifth cell refers to a cell that the terminal device can measure within the first time period, and the first cell refers to a cell that the terminal device actually measures within the first time period. In other words, the terminal device can actually measure one or more cells in the fifth cell within the first time period, and the one or more cells in the fifth cell are the first cell.

[0291] The fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the first spatial filter refers to a spatial filter that the terminal device actually measures within the first time period. In other words, the terminal device can actually measure one or more spatial filters in the fifth spatial filter within the first time period, and one or more spatial filters in the fifth spatial filter are the first spatial filter.

[0292] Since the first signal is a reference signal on the fifth cell and / or the fifth spatial filter, and the third signal is a reference signal on the first cell and / or the first spatial filter, one or more signals in the first signal are the third signal.

[0293] Since the second period is the period for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period, and the first period is the period for the terminal device to measure the first cell and / or the first spatial filter within the first time period, one or more periods in the second period are the first period.

[0294] Since the second moment is the moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period, and the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period, one or more moments in the second moment are the first moment.

[0295] The sixth cell is a cell in which the terminal device can reside during the second time period, and the second cell is a cell in which the terminal device resides during the second time period, determined based on the first link quality. In other words, one or more cells in the sixth cell can be determined based on the first link quality, and the one or more cells in the sixth cell are the second cell.

[0296] The sixth spatial filter is a spatial filter in which the terminal device can reside during the second time period, and the second spatial filter is a spatial filter in which the terminal device can reside during the second time period, determined based on the first link quality. In other words, one or more spatial filters in the sixth spatial filter can be determined based on the first link quality, and the one or more spatial filters in the sixth spatial filter are the second spatial filter.

[0297] Through this method, the terminal device can send the capability information of the terminal device to the network device, so that the network device can configure the measurement and / or prediction of the terminal device after receiving the capability information of the terminal device.

[0298] In some embodiments, the network device may send sixth information to the terminal device, where the sixth information includes one or more of the following:

[0299] An index of a seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to perform measurement in the first time period, and the seventh cell includes the first cell;

[0300] An index of a seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to perform measurement in the first time period, and the seventh spatial filter includes the first spatial filter;

[0301] an index of a second signal, where the second signal is a reference signal on a seventh cell and / or a seventh spatial filter;

[0302] The length of a third period, where the third period is a period during which the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0303] An index of a third moment, where the third moment is a moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0304] An index of an eighth cell, where the eighth cell refers to a cell configured by the network device for the terminal device to reside in the second time period, and the eighth cell includes the second cell;

[0305] The index of the eighth spatial filter, the eighth spatial filter refers to a spatial filter configured by the network device for the terminal device to reside in the second time period, and the eighth spatial filter includes the second spatial filter.

[0306] Accordingly, the terminal device can receive the sixth information from the network device.

[0307] Furthermore, in some embodiments, the sixth information may be related to capability information of the terminal device.

[0308] It should be noted that the seventh cell refers to the cell configured by the network device for the terminal device to perform measurements during the first time period, and the first cell refers to the cell actually measured by the terminal device during the first time period. That is, the terminal device may actually measure one or more of the seventh cells during the first time period, and one or more of the seventh cells may be the first cell. Furthermore, if the sixth information is related to the terminal device's capability information, the seventh cell may be one or more of the fifth cells.

[0309] The seventh spatial filter refers to a spatial filter configured by the network device for measurement by the terminal device during the first time period, and the first spatial filter refers to the spatial filter actually measured by the terminal device during the first time period. In other words, the terminal device may actually measure one or more spatial filters in the seventh spatial filter during the first time period, and one or more spatial filters in the seventh spatial filter are the first spatial filter. In addition, when the sixth information is related to the capability information of the terminal device, the seventh spatial filter may be one or more of the fifth spatial filters.

[0310] Since the second signal is a reference signal for the seventh cell and / or the seventh spatial filter, and the third signal is a reference signal for the first cell and / or the first spatial filter, one or more of the second signals may be the third signal. Furthermore, if the sixth information is related to the capability information of the terminal device, the second signal may be one or more of the first signals.

[0311] Since the third period is the period during which the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period, and the first period is the period during which the terminal device measures the first cell and / or the first spatial filter within the first time period, one or more periods in the third period may be the first period. In addition, when the sixth information is related to the capability information of the terminal device, the third period may be one or more periods in the second period.

[0312] Since the third moment is the moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period, and the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period, one or more moments in the third moment may be the first moment. In addition, when the sixth information is related to the capability information of the terminal device, the third moment may be one or more moments in the second moment.

[0313] The eighth cell refers to a cell configured by the network device for the terminal device to reside in during the second time period, and the second cell is the cell determined based on the first link quality as the terminal device's residency during the second time period. In other words, one or more cells in the eighth cell may be determined based on the first link quality, and one or more of the eighth cells may be the second cell. Furthermore, if the sixth information is related to the terminal device's capability information, the eighth cell may be one or more of the sixth cells.

[0314] The eighth spatial filter refers to a spatial filter configured by the network device for the terminal device to reside in the second time period, and the second spatial filter is a spatial filter determined based on the first link quality for the terminal device to reside in the second time period. In other words, one or more spatial filters in the eighth spatial filter can be determined based on the first link quality, and one or more spatial filters in the eighth spatial filter are the second spatial filters. In addition, when the sixth information is related to the capability information of the terminal device, the eighth spatial filter can be one or more of the sixth spatial filters.

[0315] Through this method, the network device can send the sixth information to the terminal device, so as to configure the measurement and / or prediction of the terminal device.

[0316] An embodiment of the present application provides a communication method, in which a terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, thereby being able to directly transition from a cell and / or spatial filter with better link quality to another cell / or spatial filter with better link quality, without experiencing performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0317] The communication method provided in the embodiment of the present application is described in detail below in conjunction with specific application scenarios.

[0318] For ease of description, the following embodiments use "beam (pair)" to represent "spatial filter." In other words, in some scenarios, "beam (pair)" and "spatial filter" can be used interchangeably.

[0319] The measurement set Set B is mentioned many times in the following examples. m,n and prediction set Set A c , it should be understood that Set B m,n Refers to the candidate cell (i.e., the seventh cell) configured by the NW for the UE to measure in the first time period based on the UE's capability information, and the historical moment (i.e., the third moment) at which the UE measured the candidate cell in the first time period; where 1<=m<=M, M is the number of candidate cells configured by the NW for the UE to measure, and 1<=n<=N, N is the number of historical moments. Set A c It refers to the candidate cell (ie, the eighth cell) configured by the NW for the UE to reside in the second time period based on the UE's capability information; wherein 1<=c<=C, where C is the number of candidate cells configured by the NW for the UE to reside in.

[0320] In related technologies, when the link quality of the cell and / or beam where the UE is currently residing drops to a certain level, it will trigger the switching of the cell and / or beam, which often has a time lag. The technical solution provided in the embodiment of the present application can predict the link quality of multiple candidate cells (such as the second cell) and / or multiple beams (such as the second spatial filter) in the future based on the historical link quality (i.e., the first link quality), thereby selecting the optimal cell and / or beam. It has strong foresight, and therefore can also save the delay of cell switching and / or beam switching, and reduce the risk of UE wireless link failure. Allowing the UE to directly transition from a cell and / or beam with better link quality to another cell and / or beam with better link quality will not experience performance degradation and link interruption caused by untimely cell switching and / or beam switching.

[0321] The embodiments of the present application provide a time-domain mobility prediction solution based on an AI / ML model.

[0322] When the AI / ML model (i.e., the first model) is deployed on the UE side, the UE can measure the measurement set Set B of M candidate cells (including the current serving cell) at N historical moments. m,n , as the input of the AI / ML model. Within a time window, the model predicts the Top-D (in the top D positions) optimal candidate cells (i.e., the second cell), the residence time, and the cell-level link quality. For any cell in the Top-D candidate cells, the model predicts the Top-E (in the top E positions) optimal beam (pair) (i.e., the second spatial filter), the residence time, and the link quality corresponding to the beam (pair). Subsequently, the UE has two ways to utilize the prediction results of the AI / ML model. First, the UE reports the prediction results to the NW and waits for the cell switching command from the NW (i.e., the second information); second, the UE reports the prediction results to the NW, and performs cell switching and / or beam switching on its own based on the NW's instructions (i.e., the third information).

[0323] When the AI / ML model (i.e., the second model) is deployed on the NW side, the UE can measure the measurement set Set B of m candidate cells (including the current serving cell) at n historical moments. m,n , obtain the first link quality, and report the first link quality to the NW, so that the AI / ML model on the NW side can predict the cell-level and / or beam-level dwell time. The NW can send an enhanced Layer 1 / Layer 2 Triggered Mobility (L1 / L2 Triggered Mobility, LTM) switching (i.e., the fifth information) to command the UE to switch the cell / beam. In addition, based on the prediction of the optimal candidate cell and / or the optimal beam dwell time, the number of inferences of the AI / ML model can be significantly reduced.

[0324] The embodiments of the present application can use a trained AI / ML model to predict time domain mobility, with the aim of using limited historical moment measurements to predict the most suitable cell and / or beam (pair) from multiple candidate cells and / or multiple beams (pairs), and whether the cell and / or beam (pair) can maintain a certain link quality for a period of time.

[0325] After the prediction performance of the AI / ML model drops to a certain level, such as when the prediction accuracy drops below a certain threshold (such as the first threshold, or the third threshold), the prediction function of the AI / ML model can be suspended and fall back to the measurement-based mobility solution. In addition to the prediction accuracy of the AI / ML model, the confidence of the AI / ML model in the prediction output can also be considered. When the confidence level of the AI / ML model output is too low, for example, if the confidence level of the AI / ML model predicting a certain optimal candidate cell is lower than a certain threshold (such as the second threshold, or the fourth threshold), it means that the AI / ML model lacks information for the prediction, and the prediction result is not worthy of being adopted. Similarly, it is possible to consider suspending the prediction of the AI / ML model so that the UE side or the NW side falls back to the measurement-based mobility mechanism.

[0326] Switching between the AI / ML model-based prediction solution and the measurement-based mobility solution can be done using RRC signaling or MAC CE signaling. For example, if RRC signaling or MAC CE signaling indicates that the AI / ML model is suspended or disabled, the UE falls back to the measurement-based mobility solution; if RRC signaling or MAC CE signaling indicates that the AI / ML model is resumed or enabled, the UE uses the AI / ML model and performs relevant predictions.

[0327] Combined with the process and signaling design of the 3rd Generation Partnership Project (3GPP) protocol, the technical solution can be described in two embodiments: deploying the AI / ML model on the UE side and deploying the AI / ML model on the NW side.

[0328] Embodiment 1: The AI / ML model is deployed on the UE side.

[0329] Figure 12 is a schematic diagram of a scenario for predicting the optimal candidate cell and / or optimal beam provided by an embodiment of the present application. Assume that the UE moves at a certain speed in multiple cells (i.e., cell #1, cell #2, and cell #3), and the trajectory of the UE movement is shown as the dotted line. The UE measures the downlink reference signal (such as CSI-RS or SSB) in the historical measurement instance (Measurement Instances). The AI / ML model can predict the optimal cell corresponding to a window in the future, the optimal uplink / downlink beam (pair) corresponding to the optimal cell, the dwell time, the link quality corresponding to the optimal cell, and the link quality corresponding to the optimal uplink / downlink beam (pair), such as L1-RSRP.

[0330] As shown in Figure 12, the UE measures measurement set Set B at two times (time 1 and time 2) in cell #1 (i.e., the current serving cell). m,n , where M=3 in 1<=m<=3 represents three candidate cells (including cell #1), and N=2 in 1<=n<=2 represents two moments; after the UE moves to cells #2 and #3, it can select the candidate cells from the prediction set Set A. c (where 1<=c<=3) selects the best candidate cell (including cell-level dwell time) and the best beam (including beam-level dwell time). The reference signals actually measured by the UE are represented by solid ellipses, and those not measured but in the prediction set Set A are represented by solid ellipses. c The reference signal in is represented by a dotted ellipse.

[0331] For the timing relationship between the measurement window (i.e., the first time period) and the prediction window (i.e., the second time period), please refer to Figure 9. In Figure 9, the UE measures Set B in the measurement window. m,n The model predicts the Top-D (D=1) best cell and its dwell time (Cell Dwelling Time), such as T1 and T2, and the cell-level link quality. In the predicted best cell, the model predicts the Top-E (E=1) best beam (pair) in the cell and the dwell time (Beam Dwelling Time) of the beam (pair), such as T 1,1 、T 1,2 、T 2,1 It should be noted that Top-D and Top-E here can be extended to the case where D>1 and E>1.

[0332] FIG13 is a third detailed flow diagram of a communication method provided in an embodiment of the present application. As shown in FIG13 , the detailed flow may include the following steps:

[0333] S1301. The UE reports its capability information to the NW.

[0334] The UE reports the capability information of the UE to the NW, where the capability information of the UE is used to indicate that the UE supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality.

[0335] Accordingly, the NW may receive the capability information of the UE.

[0336] S1302: NW indicates Set B to UE m,n .

[0337] The NW can indicate Set B to the UE based on the UE's capability information. m,n .

[0338] Accordingly, the UE can receive Set B m,n .

[0339] Furthermore, the NW can indicate the prediction set Set A to the UE based on the UE's capability information. c .

[0340] S1303. UE can measure Set B m,n .

[0341] That is, the UE may measure the reference signals on M candidate cells at N historical moments, thereby obtaining the first link quality.

[0342] Furthermore, the UE may input the first link quality into an AI / ML model to obtain a prediction result.

[0343] S1304. The UE reports the prediction result to the NW.

[0344] Accordingly, the NW can receive the prediction results.

[0345] S1305. The NW sends a cell switching instruction to the UE.

[0346] The NW may send a cell switching indication (ie, second information) to the UE based on the prediction result.

[0347] S1306. NW sends a beam switching instruction to the UE.

[0348] The NW may send a beam switching indication (i.e., second information) to the UE based on the prediction result.

[0349] S1307. The NW sends a cell switching instruction to the UE.

[0350] The NW may send a cell switching indication (ie, second information) to the UE based on the prediction result.

[0351] It should be noted that in FIG13 , the cell switching indication (i.e., S1307) and the beam switching indication (i.e., S1306) indicated by the dotted lines may be indicated or not, depending on how the cell-level / beam (pair)-level dwell time predicted by the model is used. For example, if the cell switching indication sent by NW to the UE in step S1305 includes the dwell time T1 of the candidate cell and the dwell times T1 of the two candidate beams of the candidate cell, 1,1 and T 1,2 , S1306 and S1307 may not be present, and the terminal device may perform cell switching and / or beam switching on its own based on S1305.

[0352] The NW configures the measurement set Set B required for the AI / ML model for the UE. m,n and prediction set Set A c Previously, the UE needed to inform the NW through capability information reporting whether it supports obtaining the first link quality; and / or whether it supports determining the prediction result based on the first link quality. If this feature is supported, the capability information reported by the UE includes but is not limited to:

[0353] (1) Whether the AI / ML model on the UE side supports cell-level dwell time prediction and beam (pair)-level dwell time prediction.

[0354] (2) The maximum number of candidate cells supported for measurement on all downlink component carriers (CCs) / partial bandwidths (BWPs) (i.e., the maximum number of fifth cells):

[0355] The maximum number of measurement sets to configure (generally, each measurement set corresponds to a candidate cell);

[0356] The maximum number of measurement sets that can be measured simultaneously;

[0357] How many measurement moments (i.e., second moments) can be measured as input to the AI / ML model.

[0358] (3) Prediction of the maximum number of candidate cells supported on all downlink CCs / BWPs (i.e., the maximum number of sixth cells):

[0359] The maximum number of prediction sets to configure (generally, each prediction set corresponds to one candidate cell);

[0360] How long is the dwell time window (i.e., the maximum length of the dwell time of the sixth cell) that the AI / ML model can predict?

[0361] (4) How many candidate cell measurement sets are supported at most on a downlink CC / BWP?

[0362] For each measurement set, a maximum number of downlink SSB resources, and / or CSI-RS resources and / or CSI-RS for Mobility resources (i.e., the maximum number of first signals) that can be measured.

[0363] (5) How many candidate cells are supported on a downlink CC / BWP?

[0364] In each prediction set, a maximum number of downlink beams (pairs) can be predicted (i.e., the maximum number of sixth spatial filters), for example, a maximum number of SSBRIs and / or CRIs can be predicted.

[0365] Based on the capability information reported by the UE, the NW can configure the measurement set Set B required for the UE configuration model input. m,n and prediction set Set A c .

[0366] (1) The NW uses RRC signaling to configure a measurement set Set B for the UE m,n (1<=m<=M, 1<=n<=N):

[0367] Set B m,n The downlink beam (pair) measurement set may include CSI-RS for Mobility resources, CSI-RS resources, SSB resources, etc.

[0368] (2) NW configures the downlink beam (pair) prediction set Set A output by the model for the UE c (1<=c<=C):

[0369] The NW uses RRC signaling to configure a set of prediction sets Set A for the UE c (1<=c<=C);

[0370] Set A c The beam (pair) prediction set may include CSI-RS for Mobility resources, CSI-RS resources, SSB resources, etc.

[0371] (3) NW configures the prediction set Set A c (1<=c<=C), it is necessary to ensure that the output of the UE side model is consistent with the prediction set Set A c For example, if the configured prediction sets are Set A1, Set A2, Set A3, and Set A4, the AI / ML model output should select the appropriate optimal candidate cell from the candidate cells corresponding to these four prediction sets, and the number of optimal candidate cells must be less than or equal to 4. If the AI / ML model is obtained from the NW side (Model Delivery) and the prediction set Set Ac If it is also configured by NW, then NW needs to ensure that the prediction results of the AI / ML model are aligned with the prediction set.

[0372] There are two main methods for inputting AI / ML models on the UE side:

[0373] The first method is that the UE only enters Set B in a fixed order. m,n The link quality of the reference signal (1<=m<=M, 1<=n<=N) is the first link quality.

[0374] The second method, the input of AI / ML model includes Set B m,n The measurement set index m and time domain index n in the measurement set, as well as the corresponding first link quality, can flexibly select different Set B m,n The combination serves as input to AI / ML models.

[0375] It should be noted that the link quality is generally L1-RSRP, and may also be L1-SINR, L1-RSSI, L1-RSRQ, CQI, etc.

[0376] During the prediction time window (i.e., the second time period), the output of the UE-side AI / ML model may include one or more of the following:

[0377] (1) Indexes of the top-D best candidate cells (including the current serving cell);

[0378] (2) UE’s residence time in the top-D optimal candidate cells (Cell Dwelling Time);

[0379] (3) Cell-level link quality during the residence time in the top-D optimal candidate cells, such as cell-level RSRP.

[0380] It should be noted that the RSRP at the cell level is calculated by linearly averaging multiple RSRPs that meet the link quality (greater than a certain threshold).

[0381] (4) For any cell within the top-D best candidate cells, output the index of the top-E best beams (pairs);

[0382] (5) Beam (Pair) Dwelling Time of the UE on the Top-E optimal beams (pairs).

[0383] It should be noted that for downlink transmission, the beam (pair) output by the AI / ML model may refer to a downlink transmit spatial filter and / or a downlink receive spatial filter; for uplink transmission, the beam (pair) output by the AI / ML model may refer to an uplink transmit spatial filter and / or an uplink receive spatial filter.

[0384] It should also be noted that when the uplink and downlink have beam symmetry, the downlink and uplink beam residence time are consistent on the optimal beam of a certain optimal candidate cell; when there is no good beam symmetry, the downlink and uplink beam residence time may be inconsistent on the optimal beam of a certain optimal candidate cell.

[0385] (6) Beam-level link quality during the candidate beam (pair) residence time, such as the L1-RSRP of each beam (pair).

[0386] The UE can periodically or semi-continuously report the cell-level and / or beam (pair)-level prediction results based on the reporting period and offset configured by the NW. For semi-continuous reporting by the UE, the NW needs to activate the UE's measurement and reporting after configuring the reporting period and offset. For aperiodic reporting by the UE, the NW sends a DCI signaling to trigger the UE to measure N measurement instances, predict the dwell time, and report the prediction results.

[0387] UE can be based on Set A c (1<=c<=C) obtains one or more of the following: the optimal candidate cell, the residence time of the optimal candidate cell, the link quality corresponding to the optimal candidate cell, the optimal beam (pair) index of the optimal candidate cell, the residence time of the beam (pair), and the link quality corresponding to the optimal beam (pair) index (such as L1-RSRP), so that the above prediction results within a time window (i.e., the second time period) can be reported to NW.

[0388] There are two ways to report the best candidate cell:

[0389] In the first method, for the best candidate cell, the UE may need to report the cell index, such as PCI, PCI Index, Candidate Cell Index or the Set A corresponding to the cell. c An index of , that is, the c value; for the beam (pair) index within the candidate cell, the existing resource index in the NR system, such as SSBRI or CRI, can be used.

[0390] In the second approach, when the NW configures the SSB resources and / or CSI-RS resources of multiple candidate cells into a resource pool (or resource set) dedicated to multi-cell mobility, the SSBRI and / or CRI can be used to characterize not only the SSB resources and / or CSI-RS resources themselves, but also the candidate cell from which the resources come. Therefore, the UE does not need to report the optimal candidate cell index, but only the SSBRI and / or CRI. The NW can infer the optimal candidate cell corresponding to the optimal beam (pair) through pre-configuration.

[0391] Regarding link quality, the embodiment of the present application takes L1-RSRP as an example, and does not exclude other link quality indicators, such as L1-SINR or CQI.

[0392] In order to carry the prediction results of the best candidate cell and the best beam, it is necessary to revise the beam reporting format in the relevant technology.

[0393] As shown in Table 1 (without reporting the optimal candidate cell index), beam-level reporting is used, and each CRI or SSBRI corresponds to a beam (pair) dwell time. When multiple CRIs or SSBRIs are reported corresponding to a candidate cell, the NW can determine the dwell time of the candidate cell.

[0394] Through this method, the NW side can understand the optimal service time of the candidate cell and / or candidate beam for the UE, so that when the service time ends, it can prepare in advance to switch to the next optimal candidate cell and / or candidate beam, thereby reducing the delay of cell switching and / or beam switching.

[0395] As shown in Table 2 (report with candidate cell index), the UE reports the optimal candidate cell within the prediction time window (i.e., the second time period) as well as the cell-level residence time and cell-level link performance, as well as the optimal beam (pair), beam-level residence time and beam-level link performance in each optimal candidate cell.

[0396] For the predicted beam (pair), if the predicted downlink transmit beam is a downlink transmit beam, it can be represented by the conventional CRI or SSBRI; if the predicted downlink transmit receive beam is a downlink transmit receive beam, it can be referred to as Beam (pair).

[0397] The Rel-18 NR LTM standard supports NWs using CSC MAC CE signaling for cell handover. This MAC CE signaling includes a candidate cell index and a unified TCI state. The former indicates the best candidate cell (i.e., the third cell), while the latter indicates the best beam (pair) within the best candidate cell (i.e., the third spatial filter).

[0398] In a CSC, the NW indicates one or more consecutive optimal candidate cell indices and cell-level dwell times to the UE. After the dwell time of a specific optimal candidate cell expires, the UE automatically switches to the next indicated optimal candidate cell and dwells for the corresponding duration, thus reducing the frequency of CSC issuance.

[0399] In a CSC, the NW indicates one or more consecutive optimal beam (pair) indices (via TCI State IDs) and beam-level dwell times for each optimal candidate cell. After the dwell time of an optimal beam (pair) expires, the UE automatically switches to the next optimal beam (pair) and dwells for the corresponding duration.

[0400] In some embodiments, the dwell time of the optimal candidate cell and / or optimal candidate beam can be indicated via MAC CE signaling. The NW can pre-configure the dwell time length to indicate granularity via RRC signaling. For example, if the minimum dwell time unit is 5 ms, the MAC CE can indicate the dwell time of N minimum dwell times, i.e., 5*N ms.

[0401] For a top candidate cell, the NW can add a beam (pair) dwell time to the beam switching command, such as indicating one or more updated beam (pair) indices and their dwell times in DCI format 1_1 or 1_2. When the dwell time of a beam (pair) expires, the UE can automatically switch to the next beam (pair) and dwell for the corresponding duration.

[0402] In some embodiments, the dwell time of the optimal candidate cell and / or optimal candidate beam may be indicated via DCI signaling. The NW may configure possible dwell time lengths, such as {5ms, 10ms, 15ms, 50ms}, through RRC, corresponding to the code points {00}, {01}, {10}, and {11} of the 2-bit field in the DCI (which may be named the Dwelling Time Indicator), respectively.

[0403] It should be noted that by indicating the dwell time of the optimal candidate cell and / or the optimal candidate beam through MAC CE signaling or DCI signaling, the frequent sending of signaling can be reduced.

[0404] If the NW side has sufficient resources to accommodate the UE's uplink and downlink transmissions within the residence time of the candidate cell and / or candidate beam, the NW can inform the UE through a simple indication message or confirmation message, such as a flag or a bit, that it can switch the candidate cell and / or candidate beam according to the prediction results.

[0405] It should be noted that the UE can execute a switching scheme without CSC indication, that is, after the cell-level residence time and / or the beam (pair) level residence time ends, the UE can switch the optimal candidate cell and / or optimal beam (pair) on its own, thereby reducing the signaling overhead.

[0406] Example 2: The AI / ML model is deployed on the NW side.

[0407] Considering the generalization performance of AI / ML models, AI / ML models deployed on specific UEs may not be able to adapt to the changing network environment. Therefore, it is possible to consider deploying AI / ML models on the NW side. What requires UE assistance is that the UE performs time domain mobility measurements, that is, measuring Set B. m,n (1<=m<=M, 1<=n<=N), and reports the measured first link quality to NW.

[0408] Figure 14 is a fourth detailed flow chart of a communication method provided in an embodiment of the present application. As shown in Figure 14, the method may include the following steps.

[0409] S1401. The UE reports its capability information to the NW.

[0410] The UE reports the capability information of the UE to the NW, where the capability information of the UE is used to indicate that the UE supports obtaining the first link quality.

[0411] Accordingly, the NW may receive the capability information of the UE.

[0412] S1402: NW indicates Set B to UE m,n .

[0413] W can indicate Set B to the UE based on the UE's capability information. m,n .

[0414] Accordingly, the UE can receive Set B m,n .

[0415] S1403. UE can measure Set B m,n .

[0416] That is, the UE may measure the reference signals on M candidate cells at N historical moments, thereby obtaining the first link quality.

[0417] S1404. The UE reports the measured first link quality to the NW.

[0418] Accordingly, the NW may receive the first link quality.

[0419] The NW can input the first link quality into the AI / ML model to obtain the prediction result.

[0420] S1405: Send a cell switching instruction.

[0421] The NW may send a cell switching indication (ie, the fifth information) to the UE based on the prediction result.

[0422] S1406. Send a beam switching instruction.

[0423] The NW may send a beam switching indication (ie, the fifth information) to the UE based on the prediction result.

[0424] S1407: Send a cell switching instruction.

[0425] The NW may send a cell switching indication (ie, the fifth information) to the UE based on the prediction result.

[0426] It should be noted that since the AI / ML model is deployed on the NW side, the UE cannot know the dwell time T1 of the candidate cell and the dwell time T of the two candidate beams of the candidate cell in advance. 1,1 and T 1,2 , it is unable to complete cell switching and / or beam (pair) switching by itself, and requires explicit indication from the signaling from the NW, as shown by the solid line in Figure 14.

[0427] Before the NW configures the measurement set Set Bm,n and prediction set Set Ac required by the AI / ML model for the UE, the UE needs to inform the NW through capability information reporting whether it supports obtaining the first link quality. If this feature is supported, the capability information reported by the UE includes but is not limited to:

[0428] (1) The maximum number of candidate cells supported for measurement on all downlink CCs / BWPs (i.e., the maximum number of fifth cells):

[0429] The maximum number of measurement sets to configure (generally, each measurement set corresponds to a candidate cell);

[0430] The maximum number of measurement sets that can be measured simultaneously;

[0431] How many measurement moments (i.e., second moments) can be measured as input to the AI / ML model.

[0432] (2) How many candidate cell measurement sets are supported at most on a downlink CC / BWP?

[0433] For each measurement set, a maximum number of downlink SSB resources, CSI-RS resources and / or CSI-RS for Mobility resources (i.e., the maximum number of first signals) that can be measured.

[0434] Based on the capability information reported by the UE, the NW can configure the measurement set Set B required for the UE configuration model input. m,n .

[0435] The NW uses RRC signaling to configure a measurement set Set B for the UE m,n (1<=m<=M, 1<=n<=N):

[0436] Set B m,n The downlink beam (pair) measurement set may include CSI-RS for Mobility resources, CSI-RS resources, SSB resources, etc.

[0437] The UE may measure the downlink reference signals of M candidate cells at N historical moments based on the reported capability information and the configuration of the NW, and report the obtained measurement results (such as the first link quality) to the NW.

[0438] There are two ways to report measurement results:

[0439] In the first method, the UE can report the measurement result once in one reporting instance. The specific format is shown in Table 3. This allows the NW to obtain the UE's measurement result as soon as possible and infer the candidate cell / candidate beam dwell time as early as possible.

[0440] In the second method, the UE can report multiple measurement results to the NW in one reporting instance. The specific format is shown in Table 4. This can reduce the number of UE reports and reduce unnecessary uplink resource usage.

[0441] It should be noted that the input and output of the AL / ML model on the NW side can refer to the input and output of the AL / ML model on the UE side in the aforementioned embodiment, and will not be repeated here.

[0442] It should also be noted that when the AL / ML model is deployed on the NW side, the cell switching command and beam switching indication can refer to the description in the aforementioned embodiment and will not be repeated here.

[0443] An embodiment of the present application provides a communication method, in which the UE can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, thereby being able to directly transition from a cell and / or spatial filter with better link quality to another cell and / or spatial filter with better link quality, without experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0444] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all fall within the scope of protection of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will no longer describe the various possible combinations separately. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the idea of ​​the present application, they should also be regarded as the contents disclosed in the present application. For another example, under the premise of no conflict, the various embodiments and / or the technical features in each embodiment described in the present application can be arbitrarily combined with the prior art, and the technical solution obtained after the combination should also fall within the scope of protection of the present application.

[0445] It should also be understood that in the various method embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0446] FIG15 is a schematic diagram of the structure of a communication device 1500 provided in an embodiment of the present application, which is applied to a terminal device. As shown in FIG15 , the communication device 1500 may include:

[0447] The first processing unit 1510 is configured to obtain a first link quality, where the first link quality is the link quality of the first cell and / or the first spatial filter in a first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in a second time period. The end time of the first time period is earlier than the start time of the second time period.

[0448] In some embodiments, the first processing unit 1510 is further configured to determine a prediction result based on the first link quality.

[0449] In some embodiments, the first processing unit 1510 is further configured to input the first link quality into the first model to determine a prediction result.

[0450] In some embodiments, the first processing unit 1510 is further configured to input the first link quality and the first information into the first model to determine a prediction result, where the first information includes one or more of the following:

[0451] an index of the first cell;

[0452] the index of the first spatial filter;

[0453] A first period, where the first period is a period during which the terminal device measures the first cell and / or the first spatial filter within a first time period;

[0454] The index of the first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0455] In some embodiments, the prediction results include one or more of the following:

[0456] The index of the second cell;

[0457] the dwell time of the second cell;

[0458] link quality of the second cell during the dwell time in the second cell;

[0459] the index of the second spatial filter;

[0460] the dwell time of the second spatial filter;

[0461] The link quality of the second spatial filter during the dwell time of the second spatial filter.

[0462] In some embodiments, as shown in FIG15 , the communication device 1500 may further include:

[0463] The first sending unit 1520 is configured to send the prediction result to the network device.

[0464] In some embodiments, as shown in FIG15 , the communication device 1500 may further include:

[0465] The first receiving unit 1530 is configured to receive second information from the network device, where the second information is obtained based on the prediction result and indicates one or more of the following:

[0466] The index of the third cell;

[0467] the dwell time of the third cell;

[0468] the index of the third spatial filter;

[0469] the dwell time of the third spatial filter;

[0470] The third cell is one or more of the second cells, and the third spatial filter is one or more of the second spatial filters.

[0471] In some embodiments, the first processing unit 1510 is further configured to perform cell switching and / or spatial filter switching based on the second information.

[0472] In some embodiments, the first receiving unit 1530 is further configured to receive third information from the network device, where the third information is used to instruct the terminal device to perform cell switching and / or spatial filter switching based on the prediction result.

[0473] In some embodiments, the first processing unit 1510 is further configured to not use the first model to obtain a prediction result if the accuracy of the first model is less than a first threshold and / or the confidence of the first model is less than a second threshold.

[0474] In some embodiments, the first receiving unit 1530 is further configured to receive fourth information from the network device, the fourth information is carried through radio resource control RRC signaling and / or media access control control unit MAC CE signaling, and the fourth information is used to indicate the shutdown or suspension of the first model; the first processing unit 1510 is further configured to obtain a prediction result based on the fourth information without using the first model.

[0475] In some embodiments, the first sending unit 1520 is further configured to send the first link quality to the network device.

[0476] In some embodiments, the first sending unit 1520 is further configured to send first information to the network device, where the first information and the first link quality are used to determine the prediction result, and the first information includes one or more of the following:

[0477] an index of the first cell;

[0478] the index of the first spatial filter;

[0479] A first period, where the first period is a period during which the terminal device measures the first cell and / or the first spatial filter within a first time period;

[0480] The index of the first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0481] In some embodiments, the first receiving unit 1530 is further configured to receive fifth information from the network device, where the fifth information is related to the first link quality and is used to indicate one or more of the following:

[0482] The index of the fourth cell;

[0483] the dwell time of the fourth cell;

[0484] the index of the fourth spatial filter;

[0485] the dwell time of the fourth spatial filter;

[0486] The fourth cell is one or more of the second cells, and the fourth spatial filter is one or more of the second spatial filters.

[0487] In some embodiments, the first processing unit 1510 is further configured to perform cell switching and / or spatial filter switching based on the fifth information.

[0488] In some embodiments, the second information and / or the fifth information is carried via MAC CE signaling or downlink control information DCI signaling.

[0489] In some embodiments, the first sending unit 1520 is further configured to send capability information of the terminal device to the network device, where the capability information of the terminal device is used to characterize that the terminal device supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality.

[0490] In some embodiments, the capability information of the terminal device includes one or more of the following:

[0491] a maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell;

[0492] a maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter;

[0493] a maximum number of first signals supported by the terminal device for measurement, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter;

[0494] a maximum length of a second period supported by the terminal device, where the second period is a period during which the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0495] a maximum number of second moments supported by the terminal device, the second moment being a moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0496] a maximum number of sixth cells supported by the terminal device, where the sixth cell refers to a cell in which the terminal device can reside within the second time period, and the sixth cell includes the second cell;

[0497] a maximum number of sixth spatial filters supported by the terminal device, where the sixth spatial filter refers to a spatial filter in which the terminal device can reside within the second time period, and the sixth spatial filter includes the second spatial filter;

[0498] The terminal device supports obtaining the dwell time of the sixth cell;

[0499] The terminal device supports obtaining the dwell time of the sixth spatial filter;

[0500] The terminal device supports obtaining the maximum length of the residence time of the sixth cell.

[0501] In some embodiments, the first receiving unit 1530 is further configured to receive sixth information from the network device, where the sixth information includes one or more of the following:

[0502] An index of a seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to perform measurement in the first time period, and the seventh cell includes the first cell;

[0503] An index of a seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to perform measurement in the first time period, and the seventh spatial filter includes the first spatial filter;

[0504] an index of a second signal, where the second signal is a reference signal on a seventh cell and / or a seventh spatial filter;

[0505] The length of a third period, where the third period is a period during which the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0506] An index of a third moment, where the third moment is a moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0507] An index of an eighth cell, where the eighth cell refers to a cell configured by the network device for the terminal device to reside in the second time period, and the eighth cell includes the second cell;

[0508] The index of the eighth spatial filter, the eighth spatial filter refers to a spatial filter configured by the network device for the terminal device to reside in the second time period, and the eighth spatial filter includes the second spatial filter.

[0509] In some embodiments, the sixth information is related to capability information of the terminal device.

[0510] In some embodiments, the first link quality is obtained based on measurement of a third signal by the terminal device within a first time period, where the third signal is a reference signal on the first cell and / or the first spatial filter.

[0511] In some embodiments, the third signal includes a synchronization signal block SSB and / or a channel state information-reference signal CSI-RS.

[0512] An embodiment of the present application provides a communication device, in which a terminal device can obtain a first link quality, where the first link quality is the link quality of a first cell and / or a first spatial filter in a first time period, and the first link quality is used to determine a prediction result, which is related to a second cell and / or a second spatial filter where the terminal device resides in a second time period, and the end time of the first time period is earlier than the start time of the second time period. In this way, the terminal device can perform cell switching and / or spatial filter switching in a timely manner based on the prediction result determined by the first link quality, thereby being able to directly transition from a cell and / or spatial filter with better link quality to another cell and / or spatial filter with better link quality, without experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0513] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0514] FIG16 is a schematic diagram of the structure of a communication device 1600 provided in an embodiment of the present application, which is applied to a network device. As shown in FIG16 , the communication device 1600 may include:

[0515] The second receiving unit 1610 is configured to receive a first link quality from the terminal device, where the first link quality is the link quality of the first cell and / or the first spatial filter in the first time period. The first link quality is used to determine a prediction result, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in the second time period. The end time of the first time period is earlier than the start time of the second time period.

[0516] In some embodiments, as shown in FIG16 , the communication device 1600 may further include:

[0517] The second processing unit 1620 is configured to determine a prediction result based on the first link quality.

[0518] In some embodiments, the second processing unit 1620 is further configured to input the first link quality into the second model to determine a prediction result.

[0519] In some embodiments, the second processing unit 1620 is further configured to input the first link quality and the first information into the second model to determine a prediction result, where the first information includes one or more of the following:

[0520] an index of the first cell;

[0521] the index of the first spatial filter;

[0522] A first period, where the first period is a period during which the terminal device measures the first cell and / or the first spatial filter within a first time period;

[0523] The index of the first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

[0524] In some embodiments, the first information is sent by the terminal device.

[0525] In some embodiments, the prediction results include one or more of the following:

[0526] The index of the second cell;

[0527] the dwell time of the second cell;

[0528] link quality of the second cell during the dwell time in the second cell;

[0529] the index of the second spatial filter;

[0530] the dwell time of the second spatial filter;

[0531] The link quality of the second spatial filter during the dwell time of the second spatial filter.

[0532] In some embodiments, as shown in FIG16 , the communication device 1600 may further include:

[0533] The second sending unit 1630 is configured to send fifth information to the terminal device based on the prediction result, where the fifth information is used by the terminal device to perform cell switching and / or spatial filter switching, and the fifth information is used to indicate one or more of the following:

[0534] The index of the fourth cell;

[0535] the dwell time of the fourth cell;

[0536] the index of the fourth spatial filter;

[0537] the dwell time of the fourth spatial filter;

[0538] The fourth cell is one or more of the second cells, and the fourth spatial filter is one or more of the second spatial filters.

[0539] In some embodiments, the fifth information is carried through media access control element MAC CE signaling or downlink control information DCI signaling.

[0540] In some embodiments, the second processing unit 1620 is further configured to not use the second model to obtain a prediction result if the accuracy of the second model is less than a third threshold and / or the confidence of the second model is less than a fourth threshold.

[0541] In some embodiments, the second receiving unit 1610 is further configured to receive capability information from the terminal device, where the capability information of the terminal device is used to indicate that the terminal device supports obtaining the first link quality.

[0542] In some embodiments, the capability information of the terminal device includes one or more of the following:

[0543] a maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell;

[0544] a maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter;

[0545] a maximum number of first signals supported by the terminal device for measurement, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter;

[0546] a maximum length of a second period supported by the terminal device, where the second period is a period during which the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0547] The maximum number of second moments supported by the terminal device, the second moment being the moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period.

[0548] In some embodiments, the second sending unit 1630 is further configured to send sixth information to the terminal device, where the sixth information includes one or more of the following:

[0549] An index of a seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to perform measurement in the first time period, and the seventh cell includes the first cell;

[0550] An index of a seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to perform measurement in the first time period, and the seventh spatial filter includes the first spatial filter;

[0551] an index of a second signal, where the second signal is a reference signal on a seventh cell and / or a seventh spatial filter;

[0552] The length of a third period, where the third period is a period during which the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0553] The index of the third moment, where the third moment is the moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period.

[0554] In some embodiments, the sixth information is related to capability information of the terminal device.

[0555] In some embodiments, the first link quality is obtained based on measurement of a third signal by the terminal device within a first time period, where the third signal is a reference signal on the first cell and / or the first spatial filter.

[0556] In some embodiments, the third signal includes a synchronization signal block SSB and / or a channel state information-reference signal CSI-RS.

[0557] An embodiment of the present application provides a communication device, in which a network device can receive a first link quality from a terminal device, where the first link quality is the link quality of a first cell and / or a first spatial filter in a first time period, and the first link quality is used to determine a prediction result, which is related to a second cell and / or a second spatial filter where the terminal device resides in a second time period, and the end time of the first time period is earlier than the start time of the second time period. In this way, the network device can, based on the prediction result determined by the first link quality, promptly instruct the terminal device to perform cell switching and / or spatial filter switching, thereby enabling the terminal device to directly transition from a cell and / or spatial filter with better link quality to another cell and / or spatial filter with better link quality, without experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, thereby reducing the risk of wireless link failure.

[0558] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0559] FIG17 is a schematic diagram of the structure of a communication device 1700 provided in an embodiment of the present application, which is applied to a network device. As shown in FIG17 , the communication device 1700 may include:

[0560] The third receiving unit 1710 is configured to receive capability information of a terminal device, where the capability information of the terminal device is used to indicate that the terminal device supports obtaining the first link quality; and / or supports determining a prediction result based on the first link quality, where the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides during a second time period;

[0561] The first link quality is the link quality of the first cell and / or the first spatial filter in a first time period, and the end time of the first time period is earlier than the start time of the second time period.

[0562] In some embodiments, the capability information of the terminal device includes one or more of the following:

[0563] a maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell;

[0564] a maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter;

[0565] a maximum number of first signals supported by the terminal device for measurement, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter;

[0566] a maximum length of a second period supported by the terminal device, where the second period is a period during which the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0567] a maximum number of second moments supported by the terminal device, the second moment being a moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period;

[0568] a maximum number of sixth cells supported by the terminal device, where the sixth cell refers to a cell in which the terminal device can reside within the second time period, and the sixth cell includes the second cell;

[0569] a maximum number of sixth spatial filters supported by the terminal device, where the sixth spatial filter refers to a spatial filter in which the terminal device can reside within the second time period, and the sixth spatial filter includes the second spatial filter;

[0570] The terminal device supports obtaining the dwell time of the sixth cell;

[0571] The terminal device supports obtaining the dwell time of the sixth spatial filter;

[0572] The terminal device supports obtaining the maximum length of the residence time of the sixth cell.

[0573] In some embodiments, as shown in FIG17 , the communication device 1700 may further include:

[0574] The third sending unit 1720 is configured to send sixth information to the terminal device, where the sixth information includes one or more of the following:

[0575] An index of a seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to perform measurement in the first time period, and the seventh cell includes the first cell;

[0576] An index of a seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to perform measurement in the first time period, and the seventh spatial filter includes the first spatial filter;

[0577] an index of a second signal, where the second signal is a reference signal on a seventh cell and / or a seventh spatial filter;

[0578] The length of a third period, where the third period is a period during which the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0579] An index of a third moment, where the third moment is a moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period;

[0580] An index of an eighth cell, where the eighth cell refers to a cell configured by the network device for the terminal device to reside in the second time period, and the eighth cell includes the second cell;

[0581] The index of the eighth spatial filter, the eighth spatial filter refers to a spatial filter configured by the network device for the terminal device to reside in the second time period, and the eighth spatial filter includes the second spatial filter.

[0582] In some embodiments, the sixth information is related to capability information of the terminal device.

[0583] In some embodiments, the prediction results include one or more of the following:

[0584] The index of the second cell;

[0585] the dwell time of the second cell;

[0586] link quality of the second cell during the dwell time in the second cell;

[0587] the index of the second spatial filter;

[0588] the dwell time of the second spatial filter;

[0589] The link quality of the second spatial filter during the dwell time of the second spatial filter.

[0590] In some embodiments, the third receiving unit 1710 is further configured to receive a prediction result from a terminal device.

[0591] In some embodiments, the third sending unit 1720 is further configured to send second information to the terminal device based on the prediction result, where the second information is used by the terminal device to perform cell switching and / or spatial filter switching, and the second information is used to indicate one or more of the following:

[0592] The index of the third cell;

[0593] the dwell time of the third cell;

[0594] the index of the third spatial filter;

[0595] the dwell time of the third spatial filter;

[0596] The third cell is one or more of the second cells, and the third spatial filter is one or more of the second spatial filters.

[0597] In some embodiments, the second information is carried through media access control element MAC CE signaling or downlink control information DCI signaling.

[0598] In some embodiments, the third sending unit 1720 is further configured to send third information to the terminal device, where the third information is used to instruct the terminal device to perform cell switching and / or spatial filter switching based on the prediction result.

[0599] In some embodiments, the first link quality is obtained based on measurement of a third signal by the terminal device within a first time period, where the third signal is a reference signal on the first cell and / or the first spatial filter.

[0600] In some embodiments, the third signal includes a synchronization signal block SSB and / or a channel state information-reference signal CSI-RS.

[0601] An embodiment of the present application provides a communication device, in which a network device can receive capability information of a terminal device, and the capability information of the terminal device is used to characterize that the terminal device supports obtaining a first link quality; and / or supports determining a prediction result based on the first link quality, and the prediction result is related to the second cell and / or the second spatial filter where the terminal device resides in a second time period. In this way, the network device can configure the terminal device to obtain the information required for the first link quality based on the capability information of the terminal device, so that the terminal device can perform cell switching and / or spatial filter switching based on the prediction result determined by the first link quality in a timely manner, thereby not experiencing the performance degradation caused by untimely cell switching and / or spatial filter switching, and reducing the risk of wireless link failure.

[0602] Those skilled in the art should understand that the relevant description of the above-mentioned communication device in the embodiment of the present application can be understood with reference to the relevant description of the communication method in the embodiment of the present application.

[0603] FIG18 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device 1800 may be a terminal device or a network device. The communication device 1800 shown in FIG18 may include a processor 1810, a memory 1820, and a transceiver 1830, wherein:

[0604] Memory 1820, for storing computer programs;

[0605] The processor 1810 is connected to the memory 1820 and is configured to call and execute a computer program from the memory 1820 to implement the method in the embodiment of the present application;

[0606] The transceiver 1830 is also called a communication interface, and is used to send and receive information when sending and receiving information with other external devices.

[0607] In some embodiments, the memory 1820 may be a separate device from the processor 1810 , or may be integrated into the processor 1810 .

[0608] In some embodiments, the transceiver 1830 may include an input interface, wherein the processor 1810 may control the input interface to communicate with other external devices, specifically, to receive information or data sent by other external devices.

[0609] In some embodiments, the transceiver 1830 may include an output interface, wherein the processor 1810 may control the output interface to communicate with other external devices, specifically, to send information or data to other external devices.

[0610] In some embodiments, the transceiver 1830 may include a transmitter and a receiver. The transceiver 1830 may further include an antenna, which may be one or more.

[0611] In some embodiments, the communication device 1800 can be applied to the network device of the embodiment of the present application, and the communication device 1800 can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0612] In some embodiments, the communication device 1800 can be applied to the terminal device of the embodiment of the present application, and the communication device 1800 can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, they will not be repeated here.

[0613] Figure 19 is a schematic structural diagram of a chip provided in an embodiment of the present application. The chip 1900 shown in Figure 19 includes a processor 1910, which can call and run a computer program from a memory to implement the method in the embodiment of the present application.

[0614] In some embodiments, as shown in FIG19 , the chip 1900 may further include a memory 1920 . The processor 1910 may call and execute a computer program from the memory 1920 to implement the method in the embodiment of the present application.

[0615] The memory 1920 may be a separate device independent of the processor 1910 , or may be integrated into the processor 1910 .

[0616] In some embodiments, the chip 1900 may further include an input interface 1930. The processor 1910 may control the input interface 1930 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0617] In some embodiments, the chip 1900 may further include an output interface 1940. The processor 1910 may control the output interface 1940 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0618] In some embodiments, the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0619] In some embodiments, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0620] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0621] FIG20 is a schematic block diagram of a communication system provided in an embodiment of the present application. As shown in FIG20 , the communication system 2000 includes a terminal device 2010 and a network device 2020.

[0622] Among them, the terminal device 2010 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 2020 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be repeated here.

[0623] It should be understood that the processor of the embodiments of the present application may be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiment can be completed by hardware integrated logic circuits in the processor or software instructions. The above processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. The various methods, steps, and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium mature in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0624] It is understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0625] It should be understood that the above-mentioned memories are exemplary but not restrictive. For example, the memories in the embodiments of the present application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM RAM (DR RAM), etc. In other words, the memories in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

[0626] An embodiment of the present application further provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, the method in the embodiment of the present application is implemented.

[0627] In some embodiments, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0628] In some embodiments, the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0629] An embodiment of the present application also provides a computer program product, which includes a computer storage medium, the computer storage medium storing a computer program, and the computer program including instructions that can be executed by at least one processor. When the instructions are executed by at least one processor, the method in the embodiment of the present application is implemented.

[0630] In some embodiments, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0631] In some embodiments, the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions enable the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0632] The embodiments of the present application also provide a computer program, which enables a computer to execute the method in the embodiments of the present application.

[0633] In some embodiments, the computer program can be applied to the network device in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0634] In some embodiments, the computer program can be applied to the terminal device in the embodiments of the present application. When the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they will not be repeated here.

[0635] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0636] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0637] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0638] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0639] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0640] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0641] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A communication method, comprising: The terminal device obtains a first link quality, where the first link quality is the link quality of a first cell and / or a first spatial filter within a first time period, and the first link quality is used to determine a prediction result, and the prediction result is related to a second cell and / or a second spatial filter where the terminal device camps within a second time period, and the end time of the first time period is earlier than the start time of the second time period.

2. The method according to claim 1, wherein It further comprises: The terminal device determines the prediction result based on the first link quality.

3. The method according to claim 2, wherein The terminal device determines the prediction result based on the first link quality, including: The terminal device inputs the first link quality into a first model to determine the prediction result.

4. The method according to claim 2 or 3, wherein The terminal device determines the prediction result based on the first link quality, including: The terminal device inputs the first link quality and first information into a first model to determine the prediction result, and the first information includes one or more of the following: The index of the first cell; The index of the first spatial filter; A first period, where the first period is the period for the terminal device to measure the first cell and / or the first spatial filter within the first time period; The index of a first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

5. The method according to any one of claims 1 to 4, wherein The prediction result includes one or more of the following: The index of the second cell; The residence time of the second cell; The link quality of the second cell within the residence time of the second cell; The index of the second spatial filter; The residence time of the second spatial filter; The link quality of the second spatial filter within the residence time of the second spatial filter.

6. The method according to claim 5, wherein, It further comprises: The terminal device sends the prediction result to the network device.

7. The method according to claim 6, wherein, It further comprises: The terminal device receives second information from the network device, where the second information is obtained based on the prediction result, and the second information is used to indicate one or more of the following: The index of a third cell; The residence time of the third cell; The index of a third spatial filter; The residence time of the third spatial filter; Wherein, the third cell is one or more of the second cells, and the third spatial filter is one or more of the second spatial filters.

8. The method according to claim 7, wherein It further comprises: The terminal device performs cell handover and / or spatial filter handover based on the second information.

9. The method according to claim 6, wherein It further comprises: The terminal device receives third information from the network device, where the third information is used to indicate that the terminal device performs cell handover and / or spatial filter handover based on the prediction result.

10. The method according to any one of claims 3 to 9, wherein It further comprises: In the case where the accuracy rate of the first model is less than a first threshold and / or the confidence level of the first model is less than a second threshold, the terminal device does not use the first model to obtain the prediction result.

11. The method according to any one of claims 3 to 10, wherein It further comprises: The terminal device receives fourth information from a network device, where the fourth information is carried by radio resource control (RRC) signaling and / or media access control control element (MAC CE) signaling, and the fourth information is used to indicate to turn off or suspend the first model; Based on the fourth information, the terminal device does not use the first model to obtain the prediction result.

12. The method according to claim 1, wherein Further included is: The terminal device sends the first link quality to the network device.

13. The method according to claim 12, wherein, Further included is: The terminal device sends first information to the network device, where the first information and the first link quality are used to determine the prediction result, and the first information includes one or more of the following: The index of the first cell; The index of the first spatial filter; A first period, where the first period is the period for the terminal device to measure the first cell and / or the first spatial filter within the first time period; The index of a first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

14. The method according to claim 12 or 13, wherein Further included is: The terminal device receives fifth information from the network device, where the fifth information is related to the first link quality, and the fifth information is used to indicate one or more of the following: The index of a fourth cell; The residence time of the fourth cell; The index of a fourth spatial filter; The residence time of the fourth spatial filter; Wherein, the fourth cell is one or more of the second cells, and the fourth spatial filter is one or more of the second spatial filters.

15. The method according to claim 14, wherein Further included is: The terminal device performs cell handover and / or spatial filter handover based on the fifth information.

16. The method according to any one of claims 7, 8, 14, and 15, wherein The second information and / or the fifth information are carried by MAC CE signaling or downlink control information (DCI) signaling.

17. The method according to any one of claims 1 to 16, wherein, Further included is: The terminal device sends the capability information of the terminal device to the network device, where the capability information of the terminal device is used to characterize that the terminal device supports obtaining the first link quality; And / or, supports determining the prediction result based on the first link quality.

18. The method according to claim 17, wherein The capability information of the terminal device includes one or more of the following: The maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell; The maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter; The maximum number of first signals supported by the terminal device for measurement, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter; The maximum length of a second period supported by the terminal device, where the second period is the period for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period; The maximum number of second moments supported by the terminal device, where the second moment is the moment when the terminal device measures the fifth cell and / or the fifth spatial filter within the first time period; The maximum number of sixth cells supported by the terminal device, where the sixth cell refers to the cell that the terminal device can camp on within the second time period, and the sixth cell includes the second cell; The maximum number of sixth spatial filters supported by the terminal device, where the sixth spatial filter refers to the spatial filter that the terminal device can camp on within the second time period, and the sixth spatial filter includes the second spatial filter; The terminal device supports obtaining the camping time of the sixth cell; The terminal device supports obtaining the camping time of the sixth spatial filter; The terminal device supports obtaining the maximum length of the camping time of the sixth cell.

19. The method according to any one of claims 1 to 18, wherein, Further comprising: The terminal device receives sixth information from a network device, and the sixth information includes one or more of the following: The index of the seventh cell, where the seventh cell refers to the cell configured by the network device for the terminal device to measure within the first time period, and the seventh cell includes the first cell; The index of the seventh spatial filter, where the seventh spatial filter refers to the spatial filter configured by the network device for the terminal device to measure within the first time period, and the seventh spatial filter includes the first spatial filter; The index of the second signal, where the second signal is a reference signal on the seventh cell and / or the seventh spatial filter; The length of the third period, where the third period is the period when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period; The index of the third moment, where the third moment is the moment when the terminal device measures the seventh cell and / or the seventh spatial filter within the first time period; The index of the eighth cell, where the eighth cell refers to the cell configured by the network device for the terminal device to camp on within the second time period, and the eighth cell includes the second cell; The index of the eighth spatial filter, where the eighth spatial filter refers to the spatial filter configured by the network device for the terminal device to camp on within the second time period, and the eighth spatial filter includes the second spatial filter.

20. The method according to claim 19, wherein The sixth information is related to the capability information of the terminal device.

21. The method according to any one of claims 1 to 20, wherein The first link quality is obtained based on the terminal device measuring a third signal within the first time period, where the third signal is a reference signal on the first cell and / or the first spatial filter.

22. The method according to claim 21, wherein, The third signal includes a Synchronization Signal Block (SSB) and / or a Channel State Information - Reference Signal (CSI-RS).

23. A communication method, comprising: The network device receives a first link quality from the terminal device. The first link quality is the link quality of a first cell and / or a first spatial filter within a first time period. The first link quality is used to determine a prediction result, and the prediction result is related to a second cell and / or a second spatial filter in which the terminal device camps during a second time period. The end time of the first time period is earlier than the start time of the second time period.

24. The method according to claim 23, wherein It further includes: The network device determines the prediction result based on the first link quality.

25. The method according to claim 24, wherein, The network device determines the prediction result based on the first link quality, including: The network device inputs the first link quality into a second model to determine the prediction result.

26. The method according to claim 24 or 25, wherein, The network device determines the prediction result based on the first link quality, including: The network device inputs the first link quality and first information into a second model to determine the prediction result. The first information includes one or more of the following: The index of the first cell; The index of the first spatial filter; A first period, where the first period is the period during which the terminal device measures the first cell and / or the first spatial filter within the first time period; The index of a first moment, where the first moment is the moment when the terminal device measures the first cell and / or the first spatial filter within the first time period.

27. The method according to claim 26, wherein, The first information is sent by the terminal device.

28. The method according to any one of claims 23 to 27, wherein, The prediction result includes one or more of the following: The index of the second cell; The residence time of the second cell; The link quality of the second cell during the residence time of the second cell; The index of the second spatial filter; The residence time of the second spatial filter; The link quality of the second spatial filter during the residence time of the second spatial filter.

29. The method according to any one of claims 23 to 28, wherein It further includes: Based on the prediction result, the network device sends fifth information to the terminal device. The fifth information is used for the terminal device to perform cell handover and / or spatial filter handover. The fifth information is used to indicate one or more of the following: The index of a fourth cell; The residence time of the fourth cell; The index of a fourth spatial filter; The residence time of the fourth spatial filter; Wherein, the fourth cell is one or more of the second cells, and the fourth spatial filter is one or more of the second spatial filters.

30. The method according to claim 29, wherein, The fifth information is carried by a media access control control element (MAC CE) signaling or a downlink control information (DCI) signaling.

31. The method according to any one of claims 25 to 30, wherein It further includes: In the case where the accuracy rate of the second model is less than a third threshold and / or the confidence level of the second model is less than a fourth threshold, the network device does not use the second model to obtain the prediction result.

32. The method according to any one of claims 23 to 31, wherein It further includes: The network device receives capability information from the terminal device. The capability information of the terminal device is used to characterize that the terminal device supports obtaining the first link quality.

33. The method according to claim 32, wherein, The capability information of the terminal device includes one or more of the following: The maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell; The maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter; The maximum number of first signals that the terminal device supports measuring, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter; The maximum length of a second period supported by the terminal device, where the second period is the period for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period; The maximum number of second moments supported by the terminal device, where the second moment is the moment for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period.

34. The method according to any one of claims 23 to 33, wherein Further comprising: The network device sends sixth information to the terminal device, and the sixth information includes one or more of the following: The index of a seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to measure within the first time period, and the seventh cell includes the first cell; The index of a seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to measure within the first time period, and the seventh spatial filter includes the first spatial filter; The index of a second signal, where the second signal is a reference signal on the seventh cell and / or the seventh spatial filter; The length of a third period, where the third period is the period for the terminal device to measure the seventh cell and / or the seventh spatial filter within the first time period; The index of a third moment, where the third moment is the moment for the terminal device to measure the seventh cell and / or the seventh spatial filter within the first time period.

35. The method according to claim 34, wherein, The sixth information is related to the capability information of the terminal device.

36. The method according to any one of claims 23 to 35, wherein, The first link quality is obtained based on the terminal device's measurement of a third signal within the first time period, where the third signal is a reference signal on the first cell and / or the first spatial filter.

37. The method according to claim 36, wherein, The third signal includes a synchronization signal block SSB and / or a channel state information-reference signal CSI-RS.

38. A communication method, comprising: The network device receives the capability information of the terminal device, and the capability information of the terminal device is used to characterize that the terminal device supports obtaining the first link quality; and / or, supports determining a prediction result based on the first link quality, where the prediction result is related to a second cell and / or a second spatial filter where the terminal device resides within a second time period; wherein, the first link quality is the link quality of the first cell and / or the first spatial filter within the first time period, and the end moment of the first time period is earlier than the start moment of the second time period.

39. The method according to claim 38, wherein, The capability information of the terminal device includes one or more of the following: The maximum number of fifth cells supported by the terminal device, where the fifth cell refers to a cell that the terminal device can measure within the first time period, and the fifth cell includes the first cell; The maximum number of fifth spatial filters supported by the terminal device, where the fifth spatial filter refers to a spatial filter that the terminal device can measure within the first time period, and the fifth spatial filter includes the first spatial filter; The maximum number of first signals that the terminal device supports measuring, where the first signal is a reference signal on the fifth cell and / or the fifth spatial filter; The maximum length of the second period supported by the terminal device, where the second period is the period for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period; The maximum number of second moments supported by the terminal device, where the second moment is the moment for the terminal device to measure the fifth cell and / or the fifth spatial filter within the first time period; The maximum number of sixth cells supported by the terminal device, where the sixth cell refers to a cell that the terminal device can camp on within the second time period, and the sixth cell includes the second cell; The maximum number of sixth spatial filters supported by the terminal device, where the sixth spatial filter refers to a spatial filter that the terminal device can camp on within the second time period, and the sixth spatial filter includes the second spatial filter; The terminal device supports obtaining the camping time of the sixth cell; The terminal device supports obtaining the camping time of the sixth spatial filter; The maximum length of the camping time of the sixth cell that the terminal device supports obtaining.

40. The method according to claim 38 or 39, wherein, It further includes: The network device sends sixth information to the terminal device, and the sixth information includes one or more of the following: The index of the seventh cell, where the seventh cell refers to a cell configured by the network device for the terminal device to measure within the first time period, and the seventh cell includes the first cell; The index of the seventh spatial filter, where the seventh spatial filter refers to a spatial filter configured by the network device for the terminal device to measure within the first time period, and the seventh spatial filter includes the first spatial filter; The index of the second signal, where the second signal is a reference signal on the seventh cell and / or the seventh spatial filter; The length of the third period, where the third period is the period for the terminal device to measure the seventh cell and / or the seventh spatial filter within the first time period; The index of the third moment, where the third moment is the moment for the terminal device to measure the seventh cell and / or the seventh spatial filter within the first time period; The index of the eighth cell, where the eighth cell refers to a cell configured by the network device for the terminal device to camp on within the second time period, and the eighth cell includes the second cell; Index of the eighth spatial filter, where the eighth spatial filter refers to the spatial filter configured by the network device for the terminal device to reside in the second time period, and the eighth spatial filter includes the second spatial filter.

41. The method according to claim 40, wherein The sixth information is related to the capability information of the terminal device.

42. The method according to any one of claims 38 to 41, wherein The prediction result includes one or more of the following: Index of the second cell; Residence time of the second cell; Link quality within the residence time of the second cell in the second cell; Index of the second spatial filter; Residence time of the second spatial filter; Link quality within the residence time of the second spatial filter in the second spatial filter.

43. The method according to any one of claims 38 to 42, wherein, Further included: The network device receives the prediction result from the terminal device.

44. The method according to claim 43, wherein, Further included: Based on the prediction result, the network device sends second information to the terminal device, where the second information is used for the terminal device to perform cell handover and / or spatial filter handover, and the second information is used to indicate one or more of the following: Index of the third cell; Residence time of the third cell; Index of the third spatial filter; Residence time of the third spatial filter; Wherein, the third cell is one or more of the second cells, and the third spatial filter is one or more of the second spatial filters.

45. The method according to claim 44, wherein The second information is carried by Media Access Control Control Element (MAC CE) signaling or Downlink Control Information (DCI) signaling.

46. The method according to claim 43, wherein, Further included: The network device sends third information to the terminal device, where the third information is used to instruct the terminal device to perform cell handover and / or spatial filter handover based on the prediction result.

47. The method according to any one of claims 38 to 46, wherein The first link quality is obtained based on the measurement of the third signal by the terminal device within the first time period, and the third signal is a reference signal on the first cell and / or the first spatial filter.

48. The method according to claim 47, wherein The third signal includes Synchronization Signal Block (SSB) and / or Channel State Information - Reference Signal (CSI-RS).

49. A communication device, applied to a terminal device, the device includes: A first processing unit, configured to obtain a first link quality, where the first link quality is the link quality of a first cell and / or a first spatial filter within a first time period, and the first link quality is used to determine a prediction result, and the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides in a second time period, and the end time of the first time period is earlier than the start time of the second time period.

50. A communication device, applied to a network device, the device includes: A second receiving unit, configured to receive a first link quality from a terminal device, where the first link quality is the link quality of a first cell and / or a first spatial filter within a first time period, and the first link quality is used to determine a prediction result, and the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides in a second time period, and the end time of the first time period is earlier than the start time of the second time period.

51. A communication device is applied to a network device. The device includes: A third receiving unit, configured to receive the capability information of a terminal device, where the capability information of the terminal device is used to characterize that the terminal device supports obtaining a first link quality; And / or, support determining a prediction result based on the first link quality, where the prediction result is related to a second cell and / or a second spatial filter in which the terminal device resides in a second time period; Wherein, the first link quality is the link quality of a first cell and / or a first spatial filter in a first time period, and the end time of the first time period is earlier than the start time of the second time period.

52. A communication device, the communication device includes: A memory, configured to store a computer program; A processor, connected to the memory, configured to call and run the computer program from the memory to implement the method according to any one of claims 1 to 22, or implement the method according to any one of claims 23 to 37; or implement the method according to any one of claims 38 to 48; A transceiver, configured to receive and send information during the process of receiving and sending information between the communication device and other external devices.

53. A chip, wherein, The chip includes: A memory, configured to store a computer program; A processor, connected to the memory, configured to call and run the computer program from the memory, so that the device installed with the chip executes the method according to any one of claims 1 to 22, or executes the method according to any one of claims 23 to 37, or executes the method according to any one of claims 38 to 48; A transceiver, configured to receive and send information during the process of receiving and sending information between the device and the chip.

54. A computer-readable storage medium, wherein, The computer-readable storage medium stores a computer program, and when the computer program is executed by at least one processor, it implements the method according to any one of claims 1 to 22, or implements the method according to any one of claims 23 to 37, or implements the method according to any one of claims 38 to 48.

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