Communication method, terminal device, and network device
Patent Information
- Application Number
- PCT/CN2025/086014
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-10-01
Smart Images

Figure CN2025086014_01102026_PF_FP_ABST
Abstract
Description
Communication methods, terminal equipment and network equipment Technical Field
[0001] This application relates to the field of communication technology, and more specifically, to a communication method, terminal equipment, and network equipment. Background Technology
[0002] Some communication systems (such as 6G systems) introduce measurement prediction to reduce the measurement burden on terminal devices and / or to know measurement results in advance for a period of time. If the model used for measurement prediction is deployed on the network device side, then the terminal device needs to provide the network device with measurement results as model input. In this case, how the terminal device provides measurement results to the network device becomes a problem that urgently needs to be solved. Summary of the Invention
[0003] This application provides a communication method, a terminal device, and a network device. The various aspects covered by this application are described below.
[0004] In a first aspect, a communication method is provided, comprising: a terminal device sending a first measurement report to a network device, the first measurement report including measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0005] In a second aspect, a communication method is provided, comprising: a network device receiving a first measurement report sent by a terminal device, the first measurement report including measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0006] Thirdly, a terminal device is provided, comprising: a sending module for sending a first measurement report to a network device, the first measurement report including measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0007] Fourthly, a network device is provided, comprising: a receiving module for receiving a first measurement report sent by a terminal device, the first measurement report including measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0008] Fifthly, a terminal device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the first aspect.
[0009] In a sixth aspect, a network device is provided, including a processor, a memory, and a communication interface, wherein the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to cause the network device to perform some or all of the steps in the method of the second aspect.
[0010] Seventhly, embodiments of this application provide a communication system including the aforementioned terminal device and / or network device. In another possible design, the system may further include other devices that interact with the terminal device or network device as described in the embodiments of this application.
[0011] Eighthly, embodiments of this application provide a computer-readable storage medium storing a computer program that causes a computer to perform some or all of the steps in the methods described above.
[0012] Ninthly, embodiments of this application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program operable to cause a computer to perform some or all of the steps of the methods described in the foregoing aspects. In some implementations, the computer program product may be a software installation package.
[0013] In a tenth aspect, embodiments of this application provide a chip including a memory and a processor, the processor being able to call and run a computer program from the memory to implement some or all of the steps described in the methods of the foregoing aspects.
[0014] In this embodiment, the terminal device can report measurement results for one or more reporting objects in the first measurement report. The measurement results for each of the one or more reporting objects include one or more measurement results in the time domain. In other words, for a single reporting object, the terminal device can report one or more measurement results in the time domain in the first measurement report. This facilitates measurement prediction by the network device based on these one or more measurement results, thereby improving the accuracy of the prediction. Attached Figure Description
[0015] Figure 1 is a system architecture example diagram of a wireless communication system applicable to embodiments of this application.
[0016] Figure 2 is an example diagram of a measurement task.
[0017] Figure 3 is an example diagram of a cell triggering a measurement event.
[0018] Figure 4 is an example diagram of the measurement process.
[0019] Figure 5 is a schematic diagram of the Layer 3 switching process.
[0020] Figure 6 is a schematic diagram of the process of layer 1 / layer 2 triggered mobility (LTM) switching.
[0021] Figure 7 is an example diagram of the observation window and the prediction window.
[0022] Figure 8 is a flowchart illustrating the communication method provided in an embodiment of this application.
[0023] Figure 9 is an example diagram of a first measurement report provided in an embodiment of this application.
[0024] Figure 10 is an example diagram of a first measurement report provided in another embodiment of this application.
[0025] Figure 11 is a schematic diagram of the structure of the terminal device provided in the embodiment of this application.
[0026] Figure 12 is a schematic diagram of the network device provided in an embodiment of this application.
[0027] Figure 13 is a schematic structural diagram of the communication device provided in an embodiment of this application. Detailed Implementation
[0028] Communication system architecture
[0029] Figure 1 is a system architecture example diagram of a wireless communication system 100 to which embodiments of this application can be applied. The wireless communication system 100 may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120. The network device 110 may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within that coverage area.
[0030] Figure 1 illustrates an exemplary network device and two terminal devices. Optionally, the wireless communication system 100 may include multiple network devices, and each network device may include other numbers of terminal devices within its coverage area. This application embodiment does not limit this.
[0031] Optionally, the wireless communication system 100 may also include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment.
[0032] It should be understood that the technical solutions of the embodiments of this application can be applied to various communication systems, such as: 5th generation (5G) systems or new radio (NR), long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, etc. The technical solutions provided in this application can also be applied to future communication systems, such as 6th generation mobile communication systems, satellite communication systems, and so on.
[0033] The terminal device in this application embodiment can also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The terminal device in this application embodiment can be a device that provides voice and / or data connectivity to a user, and can be used to connect people, objects, and machines, such as a handheld device with wireless connectivity, vehicle-mounted device, etc. The terminal devices in the embodiments of this application can be mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, self-driving, remote medical surgery, smart grids, transportation safety, smart cities, and smart homes, etc. Optionally, the UE can act as a base station. For example, the UE can act as a scheduling entity, providing sidelink signals between UEs in V2X or D2D, etc. For example, cellular phones and cars communicate with each other using sidelink signals. Cellular phones and smart home devices communicate without relaying communication signals through a base station.
[0034] The network device in this application embodiment can be a device for communicating with a terminal device. This network device can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, transmitting and receiving point (TRP), transmitting point (TP), master MeNB, auxiliary SeNB, multi-mode radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. Base stations can also be mobile switching centers, devices that perform base station functions in device-to-device (D2D), vehicle-to-everything (V2X), and machine-to-machine (M2M) communications, network-side devices in 6G networks, and devices that perform base station functions in future communication systems. Base stations can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.
[0035] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.
[0036] In some deployments, the network device in this application embodiment may refer to a CU or a DU, or the network device may include both a CU and a DU. The gNB may also include an AAU.
[0037] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.
[0038] It should be understood that all or part of the functions of the communication device in this application can also be implemented by software functions running on hardware, or by virtualization functions instantiated on a platform (e.g., a cloud platform).
[0039] Radio resource management (RRM) measurement
[0040] In cellular communication systems of the 3rd generation partnership project (3GPP), terminal equipment typically needs to measure the strength or quality of the radio signals in the current serving cell and neighboring cells. This type of measurement can be called RRM measurement.
[0041] In some embodiments, the terminal device can perform RRM measurements based on a measurement task. For example, the terminal device can perform RRM measurements based on a measurement task indicated by the network device. As one implementation, the network device can configure the measurement task to the terminal device via radio resource control (RRC) messages.
[0042] Figure 2 shows an example diagram of a measurement task. As shown in Figure 2, when a network device configures a measurement task for a terminal device, the measurement task can include three parts: the measurement object (MeasObjectNR), the reporting configuration (MeasConfig), and the measurement identifier (measID).
[0043] In some embodiments, a measurement task can be associated with a measurement object and a reporting configuration. A network device can configure multiple measurement objects and multiple reporting configurations for the same terminal device, and there are many-to-many associations between these multiple measurement objects and multiple reporting configurations, where any one of these associations can be understood as a measurement task as shown in Figure 2.
[0044] The measurement object may include the frequency point being measured and a description of the corresponding reference signal. In some embodiments, if the center frequency of the frequency point to be measured is the same as that of the current serving cell of the terminal device, and the subcarrier spacing is also the same, then this measurement can be called an intra-frequency measurement; otherwise, it is called an inter-frequency measurement.
[0045] A measurement object is limited to the reference signal within a cell at a single frequency point. Typically, the terminal device first discovers the existence of neighboring cells by searching for reference signals, and then measures the reference signal of the found cell.
[0046] The reporting configuration can include measurement-related configuration information. For example, the reporting configuration can include the type of measurement reporting and the various configuration parameters corresponding to each reporting type.
[0047] There are several types of measurement reporting, such as periodic reporting, reporting based on measurement events, and periodic reporting following measurement event reporting. As an example, in second-generation communication systems, measurement reports are always reported periodically; that is, terminal devices periodically report measurement reports to network devices. As another example, in third-generation communication systems (such as WCDMA), fourth-generation (LTE), and fifth-generation (NR) communication systems, measurement reports can be reported in any of the three methods mentioned above.
[0048] A measurement identifier can be used to identify a measurement task. In other words, a measurement task can associate a measurement object with a measurement configuration, and this measurement task is indicated by a measurement identifier.
[0049] The aforementioned RRM measurements can include various types of measurements. For example, RRM measurements can include intra-frequency measurements, inter-frequency measurements, and inter-radio access technology (RAT) measurements. RATs can include LTE, NR, etc. It should be noted that regardless of the measurement type used, the object of the measurement is typically a cell within a single frequency range.
[0050] In some communication systems (such as NR systems), when a terminal device performs RRM measurements, it is actually measuring a reference signal configured within the cell. This reference signal may, for example, include a synchronization signal block (SSB) or a channel state information reference signal (CSI-RS). In some embodiments, the terminal device may measure more than one reference signal. It should be noted that, in the embodiments of this application, "reference signal" and "beam" have the same meaning and can be used interchangeably.
[0051] In some embodiments, the RRM measurements performed by the terminal device need to meet certain performance requirements. For example, 3GPP specifies in Protocol 38.133 the performance requirements that the terminal device needs to meet when performing RRM measurements, which mainly include the absolute accuracy and relative accuracy of the RRM measurements.
[0052] After performing RRM measurements based on a measurement task, the terminal device can report the relevant measurement information (such as measurement results) to the network device in the form of a measurement report. This allows the network device to make relevant decisions based on the reported information, such as handover decisions and secondary cell group (SCG) change decisions. For example, when the terminal device performs measurements according to a measurement task and meets the conditions for periodic reporting or event-triggered reporting, the terminal device can send a measurement report to the network device. A brief introduction to measurement reports follows.
[0053] In some embodiments, measurement reports (such as measurement results in a measurement report) can be carried by RRC messages.
[0054] There are several ways to report measurement data, such as periodic reporting, reporting based on measurement events, or periodic reporting following initial reporting based on measurement events. Regardless of the method used by the terminal device, the measurement report can include specific measurement events and / or measurement results. As an example, a measurement report can include the cell's signal strength, such as the cell's reference signal receiving power (RSRP), which can be measured in dBm. As another example, a measurement report can include the cell's signal quality, such as the cell's reference signal receiving quality (RSRQ), which can also be measured in dB.
[0055] In the measurement report, the cells reported by the terminal device may include the current serving cell and / or neighboring cells. For example, the terminal device may report the signal strength and signal quality of the current serving cell. Alternatively, the terminal device may report the signal strength and signal quality of both the current serving cell and neighboring cells.
[0056] The measurement report can include various measurement objects. For example, the measurement object can be the frequency of the same frequency, different frequency, or different communication system.
[0057] As mentioned earlier, measurement reports may include measurement events. The triggering of these measurement events will be described below. In some embodiments, the triggering of a measurement event may include basic elements such as measurement results, comparison parameters, and timers. These basic elements will be described below.
[0058] Measurement results can be, for example, measurements of the serving cell and / or neighboring cells. For instance, the measurement result could be the signal strength of the serving cell and / or neighboring cells. Alternatively, the measurement result could be the signal quality of the serving cell and / or neighboring cells. In standard protocols, generally, the larger the numerical value of the measurement result, the higher the signal strength or quality.
[0059] The comparison parameters corresponding to a measurement event can include one or more, such as one or more of the following: threshold, hysteresis value, offset value, etc. The comparison parameters corresponding to a measurement event can be compared with the measurement results of the cell to determine whether the entry and / or exit conditions of the measurement event are met. As one possible implementation, the comparison parameters can be absolutely compared with the measurement results of the cell. An absolute comparison can refer to comparing the measurement result of a cell with a certain threshold. In this case, if the measurement result of the cell is greater than the sum of the threshold and the hysteresis value, the cell can be considered to meet the entry condition of the measurement event; if the measurement result of the cell is less than the difference between the threshold and the hysteresis value, the cell can be considered to meet the exit condition of the measurement event. As another possible implementation, the comparison parameters can be relatively compared with the measurement results of the cell. A relative comparison can refer to comparing the measurement results of neighboring cells with the measurement results of the serving cell. In some embodiments, before comparing the measurement results of neighboring cells with the measurement results of the serving cell, each cell needs to add its own relevant offset value (such as Of). s Of n For the serving cell, an offset value related to the corresponding event (such as Off_event) also needs to be added. Furthermore, when comparing the measurement results of neighboring cells and the serving cell, hysteresis values also need to be considered. The following example uses event A3 to illustrate a comparison between the measurement results of neighboring cells and the serving cell.
[0060] The entry condition for event A3 can be represented as: M n +Of n >M s +Of s +Hy s +Off_event.
[0061] The exit condition corresponding to event A3 can be represented as: M n +Of n <Ms +Of s ―Hy s +Off_event.
[0062] Among them, M n Indicates the measurement results of neighboring cells, Of n M represents the offset value of the neighboring cell. s Indicates the measurement results of the serving cell, Of s Hy represents the offset value of the serving cell. s This represents the hysteresis value, and Off_event represents the offset value associated with the corresponding event.
[0063] To maintain the robustness of this process, a timer is introduced to represent the robustness of the measurement results. For example, this timer could be a time-to-trigger (TTT) timer. In some embodiments, when a cell meets the entry condition for a measurement event, the TTT timer starts. If the cell continues to meet the entry condition for the measurement event until the TTT timer expires, the cell is considered to have triggered the measurement event. As shown in Figure 3, the target cell meets the entry condition for the measurement event at time T0, at which point the TTT timer starts, and the TTT timer's duration is t. If the target cell continues to meet the entry condition for the measurement event from T0 to T0+t, the target cell is considered to have triggered the measurement event.
[0064] Figure 4 illustrates how the terminal device performs same-frequency / different-frequency measurements, and how it performs measurement sampling at Layer 1 according to beams, and how it makes judgments on measurement events based on network configuration parameters. Several reference points shown in Figure 4 are described below.
[0065] Reference point A is the step in the physical layer measurement sampling process performed by the terminal device. In some embodiments, the terminal device can perform physical layer measurement sampling according to beam granularity to obtain measurement results that have not been filtered by layer 1.
[0066] Reference point A1 represents the layer 1 filtering performed on the measured beam measurement results by the terminal equipment. It's important to note that the beam measurement results after layer 1 filtering must meet the performance requirements specified in relevant standards (such as 3GPP standards). Generally, within a measurement cycle, the terminal equipment must perform at least one measurement sampling, and the specific number of samplings is determined by the terminal equipment's internal implementation. To ensure a shared understanding of performance requirements, 3GPP standards engineers have reached some consensus on this, which is reflected in the standard specifications in a certain way. Generally, for the frequency range (FR) 1 band, 5 samplings are performed; for the FR2-1 band, 8*5 samplings are performed; and for the FR2-2 band, 12*5 samplings are performed. How layer 1 filtering is performed is a matter of the terminal equipment's engineering implementation.
[0067] Reference point B performs a merging operation on beam measurement results obtained from point A1 within a specific cell to synthesize a Layer 1 cell-level measurement result. As one implementation, this process can select several beams whose results exceed a pre-configured threshold. The threshold and the maximum number of selected beams are configured by the network device. When no beam meets the criteria, the terminal device selects the measurement result of the beam with the best measurement result as the Layer 1 cell-level measurement result.
[0068] Reference point C is used to perform Layer 3 filtering on the Layer 1 cell-level measurement results of a certain cell to obtain the Layer 3 cell-level measurement results for that cell. The Layer 3 filtering process can be described by the following formula: F n = (1―a)*F n―1 +a*M n This formula describes an iterative process, where F n―1 This is the result of the previous layer 3 filtering, M. n This is the newly obtained measurement result after layer 1 filtering. The parameter 'a' is a filtering coefficient used to adjust the weight between the new measurement result and the previous layer 3 filtering result.
[0069] Reference point D is used to determine whether a specific measurement event has occurred by judging the measurement results of the serving cell and / or neighboring cells according to certain decision conditions (e.g., network configuration decision conditions). For example, it determines whether the measurement result of the neighboring cell is higher than the measurement result of the serving cell by an offset value (i.e., event A3), etc.
[0070] Other relevant descriptions in Figure 4 (such as the definitions of reference point E and reference point F) can be found in section 9.2.4 of the 3GPP protocol TS38.300, and will not be repeated here.
[0071] Cell handover
[0072] After receiving the measurement report from the terminal device, the network device can determine whether to trigger a handover based on the measurement report. When the network device determines to handover, it can send the configuration information of the target cell to the terminal device through a handover command, thereby triggering the terminal device to access the target cell.
[0073] Cell handover can include traditional Layer 3 handover, conditional Layer 3 handover, and LTM cell replacement. Handover or cell replacement refers to the process by which a terminal device changes its current primary serving cell (PCell) or secondary primary serving cell (SPCell).
[0074] Figure 5 illustrates a traditional Layer 3 handover process. As shown in Figure 5, after the terminal device sends a measurement report to the network device, if the network device determines that a Layer 3 handover is required, it can send a handover command to the terminal device indicating the configuration information of the target cell. Subsequently, the terminal device can trigger the process of accessing the target cell.
[0075] This application embodiment does not specifically limit the measurement events of layer 3. Exemplarily, the measurement events of layer 3 may include one or more of the following events: A1 event, A2 event, A3 event, A4 event, A5 event, and A6 event. For a description of these events, please refer to related technologies (such as Protocol 38.331), which will not be detailed in this application embodiment.
[0076] Figure 6 illustrates the LTM cell handover process. As shown in Figure 6, after the terminal device sends a measurement report to the network device, if the network device determines that a Layer 1 handover is required, it can configure one or more candidate cells to the terminal device via a handover command, and configure the reference signal information within the candidate cells in the same message. The terminal device triggers the network device to send a cell handover command by measuring and reporting the Layer 1 measurement results of the reference signals or by measurement events based on the Layer 1 measurement results, thereby achieving the purpose of cell handover.
[0077] This application does not specifically limit the LTM events. Exemplarily, an LTM event may include one or more of the following events: event LTM2, event LTM3, event LTM4, and event LTM5. Event LTM2 refers to the serving cell's beam difference being less than an absolute threshold. Event LTM3 refers to the candidate cell's beam being better than the serving cell's beam by a certain threshold. Event LTM4 refers to the candidate cell's beam being better than an absolute threshold. Event LTM5 refers to the serving cell's beam difference being less than an absolute threshold, and the candidate cell's beam being better than another absolute threshold.
[0078] The triggering mechanism for measurement events based on Layer 1 includes steps 1 to 3. Steps 1 to 3 are described below.
[0079] Step 1: The terminal device measures the serving reference signal in the serving cell and the candidate reference signal in the candidate cell. When the signal strength of any reference signal in a candidate cell meets the entry condition of the measurement event, the terminal device starts the TTT timer associated with that reference signal.
[0080] Step 2: If the strength of the reference signal for the candidate cell consistently meets the entry criteria during the TTT timer's operation, the timer will not stop. If the TTT timer eventually times out, then the Layer 1 measurement event will be triggered.
[0081] Step 3: After a Layer 1 measurement event is triggered, the terminal device reports the measurement results to the network device via medium access control (MAC) signaling. This report includes at least the information of the triggered Layer 1 measurement event, the candidate beam of the candidate cell that triggered the event, and the corresponding measurement results. Of course, for LTM cell switching, using Layer 3 measurement events to trigger the network to send cell switching commands is also permitted.
[0082] The LTM cell handover mechanism also has similar measurement task configurations to Layer 3 handover, but with slight differences. In the LTM cell handover mechanism, the measurement object refers to the reference signal within the candidate cell. The reporting configuration in the LTM cell handover mechanism either follows the physical layer's mechanism for reporting uplink control information (UCI) or utilizes MAC signaling for reporting. When using MAC signaling for reporting, the terminal device is allowed to report periodically, event-triggered, or a combination of both.
[0083] AI / ML models
[0084] In Release 18, 3GPP studied whether AI / ML models (or AI / ML algorithms) could be applied to key technologies of the physical layer, including whether the CSI of the radio interface could be compressed and decompressed, whether the best beam or beam pair in the spatial or temporal domain could be predicted, and whether positioning could be predicted.
[0085] In Release 19 (R19), 3GPP applied techniques used for beam measurement prediction to RRM measurements. The following use cases were identified in 3GPP RAN2's study on RRM measurements: RRM measurement prediction, measurement event prediction, and radio link failure (RLF) / handover failure (HOF) event prediction. The RRM measurement prediction use case, by distinguishing between the model's input and output, further includes the three sub-use cases shown in Table 1.
[0086] Table 1
[0087] The sub-use cases shown in Table 1 use the same performance metric: the average absolute error between the predicted L3 RSRP (a cell-level layer 3 measurement result) and the actual L3 RSRP is used as the prediction accuracy. The actual L3 RSRP refers to the L3 RSRP measured by the terminal equipment following the current measurement procedures. 3GPP RAN4 may use the same method to define performance metrics, or it may use existing methods, such as absolute measurement accuracy or relative measurement accuracy.
[0088] Terminal equipment can perform predictions in the time domain, spatial domain, or frequency domain. Time-domain prediction refers to using historical measurement results to predict future measurement results. The timing of the terminal equipment's measurement in the time domain can be called the measurement timing. This measurement timing can refer to the sampling timing within a measurement cycle or the timing of obtaining the measurement results after Layer 1 filtering. Spatial-domain prediction refers to predicting the measurement results of other reference signals by measuring a portion of the reference signal within a cell. Frequency-domain prediction refers to using the measurement results at one frequency point to predict the measurement results at another frequency point.
[0089] In some embodiments, the terminal device may also infer measurement events based on the prediction results of RRM measurements, or directly predict measurement events based on the measured RRM measurement results.
[0090] In some embodiments, if the purpose of RRM prediction (or RRM measurement prediction) is to reduce measurements in a certain domain (time domain, spatial domain, or frequency domain), then the prediction accuracy and the proportion of reduced measurements may be directly related. For example, the terminal device selects a reference signal at a portion of the measurement timings to obtain partial actual measurement results, or the terminal device measures a portion of the reference signal at all measurement timings to obtain partial actual measurement results. Then, based on these partial actual measurement results, the terminal device uses an AI / ML algorithm to predict the measurement results of the remaining measurement timings or reference signals. In this way, the terminal device no longer performs actual measurements on the predicted portion of the measurement timings or reference signals, thereby saving the hardware and software resources and energy consumption required for the terminal device to perform measurements. In some embodiments, if the purpose of RRM prediction is to know the measurement results in advance for a period of time in the future, as shown in Figure 7, the terminal device can use the actual measurement results at a certain frequency (f1) within a certain time window (called the observation window) to predict whether a measurement event will be triggered at that frequency (f1) in the future (called the prediction window). The purpose of this is to know in advance whether a certain measurement event will be triggered, so that network devices can begin preparations and execution for switching in advance.
[0091] The relevant techniques have been evaluated for the performance of models used to predict RRM measurements. However, the implementation method for these models remains unexplored.
[0092] As one possible implementation, the model for RRM measurement prediction can be implemented on the terminal device side. In this case, the content of the measurement report input to the model and the frequency (or frequency range) of the input are both implemented within the terminal device. The network device only needs to obtain the Layer 3 measurement report (whether predicted or actually measured).
[0093] As another possible implementation, the model for RRM measurement prediction can be implemented on the network device side. In this case, the terminal device needs to provide the network device with the measurement results that are input into the model. That is, the terminal device needs to provide the network device with a large number of measurement results.
[0094] The current measurement reporting process cannot meet the needs of terminal devices to provide measurement results that are input into the model to network devices. This is because, on the one hand, the current method of transmitting measurement results cannot meet the needs of terminal devices to provide measurement results that are input into the model to network devices; on the other hand, the current measurement result reporting cycle cannot meet the needs of terminal devices to provide measurement results that are input into the model to network devices.
[0095] Taking sub-use cases 1 and 3 mentioned in Table 1 above as examples, the input of the model is the Layer 1 beam-level measurement result. That is, the terminal device needs to send the Layer 1 beam-level measurement report via radio signaling. In related technologies, the Layer 1 beam-level measurement result can be sent via UCI. For example, the terminal device can carry the Layer 1 beam-level measurement result in a UCI and send it via the Physical Uplink Control Channel (PUCCH) or the Physical Uplink Shared Channel (PUSCH). However, the current UCI can only carry the Layer 1 beam-level measurement result of the serving cell, and it is encoded and decoded at the physical layer memory. That is, the current UCI cannot carry the Layer 1 beam-level measurement result of neighboring cells. In some implementations, the Layer 1 beam-level measurement result can also be sent to the network device via the MAC control element (MAC CE), but this is limited to candidate cells already configured for LTM conditional handover, and only when a Layer 1 measurement event is triggered. In other words, there are currently no use cases for separately reporting Layer 1 measurement results. It should be noted that the aforementioned candidate cells are a subset of neighboring cells that can be measured and reported by the network devices.
[0096] Taking sub-use case 2 mentioned in Table 1 above as an example, the terminal device can report cell-level measurement results of Layer 3 as input to the model. Generally, the current periodic measurement result reporting process is reusable. However, to reduce prediction errors, the frequency of the measurement results input to the model needs to be higher than the measurement reporting interval in the current measurement reporting process. The current measurement reporting periods are {ms120,ms240,ms480,ms640,ms1024,ms2048,ms5120,ms10240,ms20480,ms40960,min1,min6,min12,min30}. When the frequency of model input is less than 120ms, the current reporting process cannot meet the requirements. Similarly, in the scenario of reporting beam-level measurement results of Layer 1, when the model input frequency is low, the current reporting process also fails to meet the requirements.
[0097] As can be seen from the above description, if the measurement prediction model is deployed on the network device side, then how the terminal device reports the measurement results as model input becomes an urgent problem to be solved.
[0098] To address the aforementioned issues, this application proposes that a terminal device can report measurement results for one or more reporting objects to a network device. The measurement results for each of these reporting objects include one or more measurement results in the time domain. In other words, for a single reporting object, the terminal device can report one or more measurement results in the time domain in a first measurement report. This allows the network device to make measurement predictions based on these results, thereby improving the accuracy of the predictions.
[0099] The method embodiments of this application will be described below.
[0100] Figure 8 is a flowchart illustrating the communication method provided in an embodiment of this application. The method shown in Figure 8 is described from the perspective of interaction between a terminal device and a network device. The terminal device and network device can be, for example, the terminal device 120 and network device 110 shown in Figure 1. The method shown in Figure 8 includes step S810, which will be described below.
[0101] In step S810, the terminal device sends a first measurement report to the network device. Correspondingly, the network device receives the first measurement report sent by the terminal device.
[0102] In this embodiment, the first measurement report may include one or more measurement results. These one or more measurement results can be used by network devices to perform measurement predictions. In this way, the measurement prediction model can be deployed on the network device side, thereby facilitating the network device to make reasonable scheduling based on the prediction results.
[0103] In some embodiments, the first measurement report is determined based on measuring one or more of the following: a reference signal of the serving cell of the terminal device, a reference signal of a neighboring cell of the terminal device, and a reference signal of a candidate cell of the terminal device. For example, the first measurement report is determined based on measuring the reference signal of the serving cell. Alternatively, the first measurement report is determined based on measuring the reference signal of a neighboring cell. Another example is that the first measurement report is determined based on measuring the reference signal of a candidate cell. Yet another example is that the first measurement report is determined based on measuring both the reference signal of the serving cell and the reference signal of the neighboring cell. And yet another example is that the first measurement report is determined based on measuring both the reference signal of the serving cell and the reference signal of the candidate cell.
[0104] In some embodiments, the aforementioned candidate cells and / or neighboring cells are configured by the network device for the terminal device.
[0105] In some embodiments, the candidate cells are a subset of neighboring cells. For example, the candidate cells and neighboring cells may be the same cells. Another example is that the candidate cells are a subset of the neighboring cells.
[0106] In some embodiments, the candidate cells are handover candidate cells configured by the network device. This application does not limit the type of handover candidate cell. For example, the candidate cells may be candidate cells configured by the network device for LTM handover. As another example, the candidate cells may be candidate cells configured by the network device for conditional handover. Yet another example, the candidate cells may be candidate cells configured by the network device for traditional Layer 3 handover.
[0107] In some embodiments, the first measurement report includes one or more measurement results that were actually measured by the terminal device.
[0108] This application embodiment does not limit the one or more measurement results included in the first measurement report. Exemplarily, the one or more measurement results may include one or more of the following: layer 1 beam-level measurement results, layer 1 cell-level measurement results, layer 3 beam-level measurement results, and layer 3 cell-level measurement results.
[0109] In some embodiments, the first measurement report includes one or more measurement results comprising any of the foregoing. For example, the first measurement report includes beam-level measurement results for layer 1. As another example, the first measurement report includes cell-level measurement results for layer 1. As another example, the first measurement report includes beam-level measurement results for layer 3. As another example, the first measurement report includes cell-level measurement results for layer 3.
[0110] In some embodiments, the first measurement report includes one or more measurement results comprising multiples of those described above. For example, the first measurement report includes beam-level measurement results for Layer 1 and cell-level measurement results for Layer 1. As another example, the first measurement report includes beam-level measurement results for Layer 3 and cell-level measurement results for Layer 3. As yet another example, the first measurement report includes beam-level measurement results for Layer 1, beam-level measurement results for Layer 3, and cell-level measurement results for Layer 3.
[0111] It should be noted that the above examples are merely illustrations, and the first measurement report may include any combination of the above items. For the sake of brevity, they will not be listed one by one here.
[0112] In embodiments of this application, the first measurement report may include measurement results for one or more reporting objects. For example, the first measurement report may include measurement results for a single reporting object. Alternatively, the first measurement report may include measurement results for multiple reporting objects.
[0113] In some embodiments, the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain; that is, the first measurement report includes one or more measurement results in the time domain for a single reporting object. In other words, the terminal device can report one or more measurement results in the time domain for a single reporting object in the first measurement report. For example, the first measurement report may include one measurement result in the time domain for a single reporting object. Alternatively, the first measurement report may include multiple measurement results in the time domain for a single reporting object.
[0114] Taking the example of a first measurement report including measurement results for a reporting object, the first measurement report may include one or more measurement results for that reporting object in the time domain.
[0115] Taking the example of a first measurement report including measurement results for multiple reporting objects, the first measurement report may include one or more measurement results in the time domain for each of the multiple reporting objects.
[0116] In some embodiments, the first measurement report includes a single measurement result in the time domain for a reported object, which is obtained by the terminal device filtering multiple measurement results. This is because multiple measurement results for the reported object may not significantly contribute to the performance of model predictions but could increase signaling on the wireless interface. For an introduction to the terminal device filtering multiple measurement results, please refer to the section below on terminal devices filtering measurement results based on one or more parameters (such as the first parameter), which will not be detailed here.
[0117] This application does not limit the reporting target of the first measurement report. For example, the reporting target of the first measurement report may include cells and / or beams.
[0118] As an example, the first measurement report targets cells. That is, the terminal device can report the measurement results of one or more cells in the first measurement report.
[0119] As another example, the first measurement report targets beams. That is, the terminal device can report the measurement results of one or more beams in the first measurement report.
[0120] As another example, the first measurement report targets both cells and beams. That is, the terminal device can report the measurement results of one or more cells, as well as the measurement results of one or more beams, in the first measurement report.
[0121] In some embodiments, the first measurement report may include measurement results for S cells. This application embodiment does not limit the number of cells (i.e., S) covered by the first measurement report. In some embodiments, the value of S is greater than 8. For example, the value of S can be 16, 32, 64, etc. That is, in one measurement report, the terminal device can report measurement results for more than 8 cells to the network device. A larger number of cells covered by the first measurement report is beneficial to improving the prediction performance of the measurement prediction model. However, this application embodiment is not limited to this; the value of S can also be less than or equal to 8. For example, the value of S can be 4, 8, etc.
[0122] This application does not limit the configuration method of S in its embodiments. In some embodiments, S is configured by the network device. For example, the network device can configure the value of S through the parameter maxReportCells. In some embodiments, S is predefined by the protocol.
[0123] This application does not limit the method of carrying the first measurement report. In some embodiments, the first measurement report can be carried via RRC messages. In some embodiments, the first measurement report can be carried via MAC CE. Compared with carrying the first measurement report via UCI, carrying the first measurement report via RRC messages or MAC CE is beneficial to ensuring that the first measurement report can provide more measurement results, thereby helping to ensure the performance of the model on the network device side.
[0124] In some embodiments, the MAC CE carrying the first measurement report may be dedicated to carrying the measurement results of the input of a model (such as a measurement prediction model) on the network device side.
[0125] In some embodiments, the first measurement report may be a periodically reported measurement report. This application does not limit the measurement reporting interval of the first measurement report. In some embodiments, the measurement reporting interval of the first measurement report may include one or more of the following: 120ms, 240ms, 480ms, 640ms, 1024ms, 2048ms, 5120ms, 10240ms, 20480ms, 40960ms, 1min, 6min, 12min, 30min. In some embodiments, when the measurement reporting interval of the first measurement report is one or more of the above, the first measurement report may include one or more measurement results in the time domain for the first reporting object.
[0126] However, the embodiments of this application are not limited to this. For example, the measurement reporting interval of the first measurement report may be less than 120ms. For example, the measurement reporting interval of the first measurement report may include one or more of the following: 20ms, 40ms, 60ms, 80ms, 100ms, etc. In some embodiments, when the measurement reporting interval of the first measurement report is one or more of the above, the first measurement report may include one or more measurement results in the time domain for the first reporting object.
[0127] Of course, the measurement reporting interval of the first measurement report may also include one or more of the following: 20ms, 40ms, 60ms, 80ms, 100ms, 120ms, 240ms, 480ms, 640ms, 1024ms, 2048ms, 5120ms, 10240ms, 20480ms, 40960ms, 1min, 6min, 12min, 30min, etc.
[0128] It should be understood that in scenarios where network devices perform model training and / or inference based on measurement results reported by terminal devices, the richer the measurement results obtained by the network device from the terminal device, the richer the results the model can predict, or the higher the model's prediction accuracy. However, this comes at the cost of a larger signaling load on the wireless interface, which consumes more energy and wireless resources, leading to reduced spectrum utilization efficiency. Therefore, a more flexible and configurable approach is needed to achieve a balance between the two. Based on this, embodiments of this application can determine the measurement results included in the first measurement report based on one or more parameters configured by the network device (such as the first parameter, second parameter, third parameter, fourth parameter, etc. below). The following provides an exemplary description of the network device configuration parameters and how the terminal device determines the measurement results included in the first measurement report based on the parameters.
[0129] In some embodiments, the method of this application includes: a network device sending a first parameter to a terminal device. Correspondingly, the terminal device receives the first parameter sent by the network device.
[0130] In some embodiments, the first parameter is used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams. That is, the first parameter is used by the terminal device to select a subset of cells and / or beams from one or more measured cells and / or beams for reporting. For example, the first parameter is used by the terminal device to select a target cell from one or more measured cells. Another example is that the first parameter is used by the terminal device to select a target beam from one or more measured beams. Yet another example is that the first parameter is used by the terminal device to select a target cell from one or more measured cells and also to select a target beam from one or more measured beams. Reporting measurement results based on the first parameter helps reduce the signaling load on the radio interface.
[0131] In some embodiments, if the network device configures a first parameter to the terminal device, the terminal device can report the measurement results of the target cell and / or target beam through a first measurement report. That is, if the network device configures a first parameter to the terminal device, the first measurement report is used to report the measurement results of the target cell and / or target beam.
[0132] In some embodiments, the first parameter is related to one or more of the following: signal quality, signal strength. For example, the first parameter may be used to determine one or more cells with better signal quality and / or stronger signal strength as target cells, and / or the first parameter may be used to determine one or more beams with better signal quality and / or stronger signal strength as target beams. In this way, the terminal device only needs to report the measurement results of a subset of cells (or beams) with better signal quality and / or stronger signal strength to the network device, thereby helping to reduce the signaling load of the radio interface. It should be noted that the reason for selecting cells and / or beams with better signal quality and / or stronger signal strength for reporting is that cells and / or beams with poor signal quality do not provide much help for model training and / or inference, and the number of cells and beams with poor signal quality is large, and reporting these cells and / or beams leads to excessively high signaling load on the radio interface.
[0133] The embodiments of this application do not limit the first parameter. Exemplarily, the first parameter may be used to indicate one or more of the following: a first threshold related to the signal quality of the cell, a second threshold related to the signal strength of the cell, a third threshold related to the signal quality of the beam, a fourth threshold related to the signal strength of the beam, the number of cells M reported in the first measurement report, and the number of beams N reported in the first measurement report.
[0134] In some embodiments, the first parameter may be used to indicate one of the above. For example, the first parameter may be used to indicate a first threshold. As another example, the first parameter may be used to indicate a second threshold. As another example, the first parameter may be used to indicate a third threshold. As yet another example, the first parameter may be used to indicate the number M of cells reported in the first measurement report.
[0135] In some embodiments, the first parameter may be used to indicate multiple of the above. For example, the first parameter may be used to indicate a first threshold and a third threshold. As another example, the first parameter may be used to indicate a first threshold and the number M of cells reported in the first measurement report. As another example, the first parameter may be used to indicate a second threshold and the number M of cells reported in the first measurement report. As another example, the first parameter may be used to indicate a third threshold and the number N of beams reported in the first measurement report. As another example, the first parameter may be used to indicate a fourth threshold and the number N of beams reported in the first measurement report.
[0136] It should be noted that the above examples are merely illustrations. The first parameter can be used to indicate any one or more of the above. For the sake of brevity, they will not be listed here one by one.
[0137] In some embodiments, the signal quality of a cell and / or the signal quality of a beam can be indicated by RSRQ, and / or the signal quality of a cell and / or the signal quality of a beam can be indicated by the signal to interference plus noise ratio (SINR).
[0138] In some embodiments, the signal strength of the cell and / or the signal strength of the beam can be indicated by RSRP.
[0139] The embodiments of this application do not limit the first threshold and / or the third threshold. For example, the first threshold and / or the third threshold can be -20dB. Another example is that the first threshold and / or the third threshold can be -15dB. Yet another example is that the first threshold and / or the third threshold can be -10dB.
[0140] In some embodiments, the first threshold and the third threshold are the same. In other embodiments, the first threshold and the third threshold are different.
[0141] The embodiments of this application do not limit the second threshold and / or the fourth threshold. For example, the second threshold and / or the fourth threshold can be -90dBm. Another example is that the second threshold and / or the fourth threshold can be -60dBm. Yet another example is that the second threshold and / or the fourth threshold can be -45dBm.
[0142] In some embodiments, the second threshold is the same as the fourth threshold. In other embodiments, the second threshold is different from the fourth threshold.
[0143] In this embodiment of the application, the number M of cells reported in the first measurement report is not limited. For example, the value of M is 5. Or, for example, the value of M is 8.
[0144] In this embodiment of the application, the number N of beams reported in the first measurement report is not limited. For example, N may be 10. Or, for example, N may be 12.
[0145] In some embodiments, M and N are the same. In other embodiments, M and N are different.
[0146] In some embodiments, if the first parameter includes a first threshold, the target cell includes cells among one or more cells measured by the terminal device whose signal quality is greater than or equal to the first threshold. For example, if the network device configures the first threshold separately, the terminal device can select all cells with signal quality greater than or equal to the first threshold as the target cell. In some embodiments, if the first parameter includes the first threshold, but the signal quality of one or more cells measured by the terminal device is less than the first threshold, the target cell can be the cell with the best signal quality among one or more cells measured by the terminal device.
[0147] In some embodiments, if the first parameter includes a second threshold, the target cell includes cells among one or more cells measured by the terminal device whose signal strength is greater than or equal to the second threshold. For example, if the network device configures the second threshold separately, the terminal device can select all cells with signal strength greater than or equal to the second threshold as the target cell. In some embodiments, if the first parameter includes a second threshold, but the signal strength of one or more cells measured by the terminal device is less than the second threshold, the target cell can be the cell with the best signal strength among one or more cells measured by the terminal device.
[0148] In some embodiments, if the first parameter includes M, the target cell includes M cells from one or more cells measured by the terminal device. The signal quality and / or signal strength of these M cells are greater than or equal to those of the other cells in the one or more cells measured by the terminal device, excluding these M cells. That is, the M cells are the top M cells from the one or more cells measured by the terminal device. For example, if the network device is configured with M separately, the terminal device can select the top M cells in terms of signal quality and / or signal strength as the target cells.
[0149] In some embodiments, when the first parameter includes a first threshold and M, if the number of first-type cells in one or more cells measured by the terminal device is greater than or equal to M, then the target cell includes M first-type cells in the one or more cells; and / or, if the number of first-type cells in one or more cells measured by the terminal device is less than M, then the target cell includes first-type cells in the one or more cells (i.e., all first-type cells in the one or more cells); and / or, if no first-type cells are found in the one or more cells measured by the terminal device, then the target cell is the cell with the best signal quality among the one or more cells.
[0150] The signal quality of the aforementioned M Class I cells is greater than or equal to that of all other cells in the one or more cells except for the M Class I cells. In other words, the M Class I cells are the top M cells in terms of signal quality among the one or more cells.
[0151] The first type of cell mentioned above refers to cells with signal quality greater than or equal to the first threshold.
[0152] In some embodiments, when the first parameter includes a second threshold and M, if the number of first-type cells in one or more cells measured by the terminal device is greater than or equal to M, then the target cell includes M first-type cells in the one or more cells; and / or, if the number of first-type cells in one or more cells measured by the terminal device is less than M, then the target cell includes first-type cells in the one or more cells (i.e., all first-type cells in the one or more cells); and / or, if no first-type cells are found in the one or more cells measured by the terminal device, then the target cell is the cell with the best signal strength among the one or more cells.
[0153] The signal strength of the aforementioned M Class I cells is greater than or equal to that of all other cells in the one or more cells except for the M Class I cells. In other words, the M Class I cells are the top M cells in terms of signal strength among the one or more cells.
[0154] The first type of cell mentioned above refers to cells with signal strength greater than or equal to the second threshold.
[0155] In some embodiments, if the first parameter includes a third threshold, the target beam includes beams whose signal quality is greater than or equal to the third threshold among one or more beams measured by the terminal device. For example, if the network device configures the third threshold separately, the terminal device can select all beams with signal quality greater than or equal to the third threshold as the target beam. In some embodiments, if the first parameter includes a third threshold, but the signal quality of one or more beams measured by the terminal device is less than the third threshold, the target beam can be the beam with the best signal quality among one or more beams measured by the terminal device.
[0156] In some embodiments, if the first parameter includes a fourth threshold, the target beam includes beams whose signal strength is greater than or equal to the fourth threshold among one or more beams measured by the terminal device. For example, if the network device configures the fourth threshold separately, the terminal device can select all beams with signal strength greater than or equal to the fourth threshold as the target beam. In some embodiments, if the first parameter includes a fourth threshold, but the signal strength of one or more beams measured by the terminal device is less than the fourth threshold, the target beam can be the beam with the best signal strength among one or more beams measured by the terminal device.
[0157] In some embodiments, if the first parameter includes N, the target beam comprises N beams from one or more beams measured by the terminal device. The signal quality and / or signal strength of these N beams are greater than or equal to those of the other beams in the one or more beams measured by the terminal device, excluding these N beams. That is, the N beams are the top N beams from the one or more beams measured by the terminal device. For example, if the network device is configured with N separately, the terminal device can select the top N beams with the best signal quality and / or signal strength as the target beams.
[0158] In some embodiments, when the first parameter includes a third threshold and N, if the number of first-type beams in one or more beams measured by the terminal device is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams; and / or, if the number of first-type beams in one or more beams measured by the terminal device is less than N, then the target beam includes first-type beams in the one or more beams (i.e., all first-type beams in the one or more beams); and / or, if no first-type beams are present in one or more beams measured by the terminal device, then the target beam is the beam with the best signal quality among the one or more beams.
[0159] The signal quality of the aforementioned N type-1 beams is greater than or equal to that of the other beams in the one or more beams besides the N type-1 beams. In other words, the N type-1 beams are the top N beams in terms of signal quality among the one or more beams.
[0160] The first type of beam mentioned above is a beam whose signal quality is greater than or equal to the third threshold.
[0161] In some embodiments, when the first parameter includes a fourth threshold and N, if the number of first-type beams in one or more beams measured by the terminal device is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams; and / or, if the number of first-type beams in one or more beams measured by the terminal device is less than N, then the target beam includes first-type beams in the one or more beams (i.e., all first-type beams in the one or more beams); and / or, if no first-type beams are present in one or more beams measured by the terminal device, then the target beam is the beam with the best signal strength among the one or more beams.
[0162] The signal strength of the aforementioned N type-1 beams is greater than or equal to that of the other beams in the one or more beams besides the N type-1 beams. In other words, the N type-1 beams are the top N beams in terms of signal strength among the one or more beams.
[0163] The first type of beam mentioned above is a beam with a signal strength greater than or equal to the fourth threshold.
[0164] In some embodiments, the first measurement report includes multiple measurement results, which are arranged in chronological order. For example, the multiple measurement results are arranged in ascending chronological order. Alternatively, the multiple measurement results are arranged in descending chronological order. Referring to Figure 9, the terminal device reports three measurement results in the first measurement report, namely m1, m2, and m3, which are arranged in ascending chronological order (i.e., m3 is the latest measurement result).
[0165] In some embodiments, the first measurement report includes multiple measurement results, and the first measurement report also indicates the interval (or period) between the measurement times corresponding to the multiple measurement results. Referring again to Figure 9, the terminal device reports three measurement results in the first measurement report, namely m1, m2, and m3, and the interval between the measurement times corresponding to these three measurement results is the first interval.
[0166] In some embodiments, the interval between any two adjacent measurement times among the plurality of measurement results indicated in the first measurement report is the same. Taking Figure 9 as an example, the interval between the measurement times corresponding to m1 and m2 is the same as the interval between the measurement times corresponding to m2 and m3, for example, both being the first interval.
[0167] In some embodiments, the interval between the measurement times corresponding to two adjacent measurement results among the plurality of measurement results indicated in the first measurement report may be different. Taking Figure 9 as an example, the interval between the measurement times corresponding to m1 and m2 is a first interval, and the interval between the measurement times corresponding to m2 and m3 may be a second interval, and the first interval is different from the second interval.
[0168] In some embodiments, the method of this application includes: a network device sending a second parameter to a terminal device. Correspondingly, the terminal device receives the second parameter sent by the network device.
[0169] In some embodiments, the second parameter is used to indicate the maximum number of measurement results allowed to be reported for a reporting object and / or the interval between the measurement times corresponding to the allowed measurement results. This application is not limited to this; for example, the second parameter can also be used to indicate the time-domain location (e.g., indicated by an offset value) of the first measurement result allowed to be reported for a reporting object.
[0170] In some embodiments, the terminal device needs to determine the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report based on the second parameter. Determining the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report based on the second parameter helps ensure the flexibility of the terminal device's implementation.
[0171] Taking a cell as the reporting target as an example, the second parameter can be used to indicate the maximum number of measurement results allowed to be reported for a single cell. In this case, the terminal device can determine the number of measurement results included in the first measurement report based on the second parameter. For example, if the second parameter indicates that a maximum of 5 measurement results are allowed to be reported for a single cell, the terminal device determines that a maximum of 5 measurement results are allowed to be reported for a single cell in the first measurement report. As an example, the terminal device determines to report 1 measurement result for a single cell. As another example, the terminal device determines to report 3 measurement results for a single cell. As yet another example, the terminal device determines to report 5 measurement results for a single cell.
[0172] Taking the cell as the reporting target again as an example, the second parameter can be used to indicate the maximum number of measurement results allowed to be reported for a cell. In this case, the terminal device can determine the number of measurement results included in the first measurement report and the interval between the measurement times corresponding to the measurement results in the first measurement report based on the second parameter. For example, the terminal device determines to report 3 measurement results for a cell, and the interval between the measurement times corresponding to any two adjacent measurement results among these 3 measurement results is the same (or different).
[0173] Taking the cell as the reporting target again as an example, the second parameter can be used to indicate the interval between measurement times corresponding to the measurement results that are allowed to be reported for a cell. In this case, the terminal device can determine the number of measurement results included in the first measurement report based on the second parameter. For example, if the second parameter indicates that the interval between measurement times corresponding to the measurement results that are allowed to be reported for a cell is 40ms, and the interval for one measurement report is 120ms, then the terminal device determines to report 3 measurement results for a cell.
[0174] Taking a beam as the reporting target as an example, the second parameter can be used to indicate the maximum number of measurement results allowed to be reported for a single beam. In this case, the terminal device can determine the number of measurement results included in the first measurement report based on the second parameter. For example, if the second parameter indicates that a maximum of 3 measurement results are allowed to be reported for a single beam, the terminal device determines to report 2 measurement results for a single beam in the first measurement report.
[0175] Continuing with the example of a beam as the reporting target, the second parameter can be used to indicate the maximum number of measurement results allowed to be reported for a single beam. In this case, the terminal device can determine the interval between the number of measurement results included in the first measurement report and the measurement time corresponding to the measurement results in the first measurement report, based on the second parameter. For example, the terminal device determines to report 3 measurement results for a single beam, and the interval between the measurement times corresponding to any two adjacent measurement results among these 3 measurement results is the same (or different).
[0176] Continuing with the example of a beam as the reporting target, the second parameter can be used to indicate the interval between measurement times corresponding to the measurement results that are allowed to be reported for a beam. In this case, the terminal device can determine the number of measurement results included in the first measurement report based on the second parameter. For example, if the second parameter indicates that the interval between measurement times corresponding to the measurement results that are allowed to be reported for a beam is 40ms, and the measurement reporting interval is 120ms, then the terminal device determines to report 3 measurement results for a beam.
[0177] In some embodiments, if the number of all measurement results that the terminal device needs to report in a measurement reporting interval is greater than or equal to the maximum number of measurement results allowed to be reported as indicated by the second parameter, then the number of measurement results reported by the terminal device in the first measurement report is determined based on the second parameter. For example, if the terminal device needs to report 7 measurement results for a cell in a measurement reporting interval, and the second parameter indicates that a maximum of 5 measurement results are allowed to be reported for a cell, then the terminal device reports 5 measurement results for a cell in the first measurement report.
[0178] In some embodiments, if the number of all measurement results that the terminal device needs to report in a measurement reporting interval is less than the maximum number of measurement results allowed to be reported as indicated by the second parameter, then the number of measurement results reported by the terminal device in the first measurement report is determined based on the number of all measurement results reported by the terminal device in a measurement reporting interval. For example, if the terminal device needs to report 3 measurement results for a cell in a measurement reporting interval, and the second parameter indicates that a maximum of 5 measurement results are allowed to be reported for a cell, then the terminal device reports 3 measurement results for a cell in the first measurement report.
[0179] It should be noted that, regardless of whether the network device is configured with a second parameter, once the terminal device determines that it will report the measurement results of a certain cell and / or beam, it will report at least one measurement result of that cell and / or beam.
[0180] In some embodiments, when the network device is configured with a second parameter, the terminal device needs to indicate information about the measurement results in the time and / or spatial domains in the first measurement report. For example, the terminal device needs to indicate the temporal order of multiple measurement results and / or the interval between the measurement times corresponding to the multiple measurement results in the first measurement report.
[0181] In some embodiments, the second parameter can be indicated by the parameter maxNumberPerInterval.
[0182] In some embodiments, the network device can configure the second parameter to the terminal device in the configuration message corresponding to the measurement task. For example, the network device can configure a measurement task to the terminal device, requiring the terminal device to measure a certain frequency point and to report the measurement results of multiple neighboring cells with the best signal strength at every measurement reporting interval. In the same configuration message, the network device can configure the second parameter. However, the embodiments of this application are not limited to this, and the fourth parameter can be carried in other messages besides the configuration message corresponding to the measurement task.
[0183] In this scenario, after determining that a specific cell needs to be reported, the terminal device can determine the number of measurement results to be reported for that cell in the first measurement report based on the second parameter. For example, if the second parameter is set to 5, the terminal device may report 1 to 5 measurement results. The terminal device can also indicate the time and / or spatial information of multiple measurement results reported for a cell in the first measurement report. For instance, the terminal device can indicate the temporal order of multiple measurement results reported for a cell and / or the interval between the corresponding measurement times in the first measurement report. Referring to Figure 9, the terminal device can indicate in the first measurement report that m1, m2, and m3 are arranged in ascending chronological order, and indicate the interval between the measurement times corresponding to m1 and m2, as well as the interval between the measurement times corresponding to m2 and m3.
[0184] In some embodiments, the method of this application includes: a network device sending a third parameter to a terminal device. Correspondingly, the terminal device receives the third parameter sent by the network device.
[0185] In some embodiments, the third parameter is used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report. That is, the network device can directly instruct the terminal device on the number of measurement results it needs to include in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report. In this way, when reporting the first measurement report, the terminal device only needs to report according to the instructions of the network device, which is beneficial for achieving centralized control and management of the network.
[0186] For example, the third parameter can be used to indicate the number of measurement results that the first measurement report needs to report for a cell and / or beam.
[0187] For example, the third parameter can be used to indicate the interval between measurement times corresponding to multiple measurement results in the first measurement report.
[0188] For example, the third parameter can be used to indicate the number of measurement results that the first measurement report needs to report for a cell and / or beam, as well as the interval between the measurement times corresponding to multiple measurement results in the first measurement report. Referring to Figure 9, the network device can directly configure the information in Figure 9 to the terminal device.
[0189] In some embodiments, when the network device is configured with a third parameter, the terminal device only needs to display the different measurement results in chronological order in an agreed manner when reporting the first measurement report.
[0190] In some embodiments, the method of this application includes: a network device sending a fourth parameter to a terminal device. Correspondingly, the terminal device receives the fourth parameter sent by the network device.
[0191] In some embodiments, the fourth parameter is used to indicate the proportion of measurement results that the terminal device needs to report or does not need to report for one or more reporting objects. That is, the fourth parameter can be used to indicate what proportion of the measurement results for a certain reporting object or objects does not need to be reported among the measurement results that need to be reported.
[0192] In some embodiments, the fourth parameter can be used to indicate the proportion (e.g., percentage) of measurement opportunities that the terminal device can skip in the time domain; that is, the terminal device can report measurement results at a portion of the measurement opportunities within a measurement reporting interval. Therefore, in some embodiments, the fourth parameter can also be referred to as or understood as the measurement reduction rate in the temporal domain (MRRT).
[0193] In some embodiments, where the fourth parameter is used to indicate the proportion of measurement opportunities that the terminal device can skip in the time domain, the terminal device can determine which measurement opportunities need to be reported based on the configured fourth parameter. For example, the terminal device can autonomously select a portion of measurement opportunities to perform measurements and report the measurement results of this portion of measurement opportunities in the first measurement report.
[0194] As an example, suppose the network device is configured with MRRT 2 / 5, which means that the terminal device needs to measure the results at 3 out of 5 measurement opportunities. Because the network device does not specify a particular mode, the terminal device can choose which 3 measurement opportunities to measure and report.
[0195] In some embodiments, once the terminal device determines when to perform and report measurements, the reporting pattern remains unchanged. This is because the network device may subsequently need to use this pattern to predict the measurement results for the remaining measurement times. For example, referring to Figure 10, assuming the network device is configured with an MRRT of 2 / 5, the terminal device determines to report the measurement results at the 1st, 3rd, and 5th measurement times. After this determination, the terminal device will report the measurement results at the 1st, 3rd, and 5th measurement times in both current and subsequent measurement reports. For the network device, it may predict the measurement results at the 2nd and 4th measurement times within the next measurement reporting interval based on the received measurement results at the 1st, 3rd, and 5th measurement times. Upon receiving the next measurement report, the network device then predicts the measurement results at the 2nd and 4th measurement times within the measurement reporting interval following the next measurement reporting interval.
[0196] In some embodiments, the fourth parameter can be used to indicate a pattern of measurement opportunities that the terminal device can skip in the time domain, i.e., which specific measurement opportunities to skip. In this case, the terminal device can measure the measurement results at the measurement opportunities configured by the network device and report the measurement results at those measurement opportunities in the first measurement report.
[0197] In some embodiments, the fourth parameter can be used to indicate the proportion (e.g., percentage) of beams that the terminal device can skip in the spatial domain; that is, the proportion of beams that the terminal device can skip out of all measured beams in the cell being measured. Therefore, in some embodiments, the fourth parameter can also be referred to as or understood as the measurement reduction rate in the spatial domain (MRRS).
[0198] In some embodiments, where the fourth parameter indicates the proportion of beams that the terminal device can skip in the airspace, the terminal device can autonomously select a portion of beams for measurement based on the configured fourth parameter, and report the measurement results of this portion of beams in the first measurement report. For example, the terminal device can report the identification information of this portion of beams and the specific measurement results in the first measurement report.
[0199] In some embodiments, the fourth parameter can be used to indicate the pattern of beams that the terminal device can skip in the airspace, i.e., which specific beams to skip. In other words, the network device can explicitly configure a subset of beams for the terminal device, which are the beams that need to be reported. In this case, the terminal device can measure the subset configured by the network device and report the measurement results obtained from measuring the beams in that subset in a first measurement report.
[0200] In some embodiments, the network device may configure the fourth parameter to the terminal device in the configuration message corresponding to the measurement task. For example, the network device may configure a measurement task to the terminal device, requiring the terminal device to measure a certain frequency point and to report the measurement results of multiple neighboring cells with the best signal strength at every measurement reporting interval. In the same configuration message, the network device may configure the fourth parameter. However, the embodiments of this application are not limited to this; the fourth parameter may be carried in other messages besides the configuration message corresponding to the measurement task.
[0201] In some embodiments, the network device may configure a fourth parameter and a second parameter simultaneously to the terminal device. For example, the network device may configure both MRRT and a second parameter simultaneously to the terminal device. In this case, the terminal device can determine which measurement times require reporting measurement results based on the fourth parameter and the second parameter.
[0202] In some embodiments, the terminal device may include first information in the first measurement report. For example, if the network device is configured with a fourth parameter, the terminal device may include first information in the first measurement report.
[0203] In other embodiments, the first information is indicated by the network device. The terminal device can determine the first measurement report based on the first information indicated by the network device.
[0204] It should be noted that when the terminal device includes the first information in the first measurement report, the message carrying the first information can be the first message; while when the network device indicates the first information, the message carrying the first information can be the second message. The first message and the second message are different messages.
[0205] In some embodiments, the first information can be used to indicate measurement results included and excluded from the first measurement report. For example, the first information can indicate the temporal pattern information of the measurement results reported by the terminal device for one or more reporting objects in the first measurement report. As an example, the first information can indicate the temporal pattern information of multiple measurement results for a reporting object within the first measurement report, such as which measurement results from five measurement times were reported, and which measurement results from those five measurement times were not reported.
[0206] This application does not limit the implementation method of the first information indicating the measurement results included and excluded in the first measurement report. As one possible implementation, the first information can indicate the measurement results included and excluded in the first measurement report using a bitmap. As another possible implementation, the first information can indicate the measurement results included and excluded in the first measurement report using ASN.1 encoding.
[0207] In some embodiments, the first information may include a first bitmap. The first bitmap may include K bits, each of which corresponds one-to-one with a K measurement result. The first measurement report may include the measurement result corresponding to the first bit (e.g., a bit with a value of 1) among the K bits, and the first measurement report does not include the measurement result corresponding to the second bit (e.g., a bit with a value of 0) among the K bits.
[0208] In some embodiments, the K measurement results corresponding to the K bits in the first bitmap are arranged in ascending chronological order.
[0209] In some embodiments, the K measurement results corresponding to the K bits in the first bitmap are arranged in reverse chronological order.
[0210] In some embodiments, the first information may include first encoded information determined based on the ASN.1 encoding scheme. The first encoded information may be used to indicate the presence or absence of K optional information units. These K optional information units correspond one-to-one with K measurement results.
[0211] In some embodiments, the first measurement report may include measurement results corresponding to existing information units among the K optional information units, and the first measurement report may not include measurement results corresponding to non-existent information units among the K optional information units. For example, if a measurement result in the first measurement report is missing, it indicates that the measurement result was skipped.
[0212] In some embodiments, if the first information includes first coded information determined based on the ASN.1 encoding method, it is necessary to specify the temporal order of the K measurement results (or K optional information units) in the list. For example, the protocol may specify that the K measurement results in the list are arranged in ascending chronological order. Alternatively, the protocol may specify that the K measurement results in the list are arranged in descending chronological order.
[0213] In some embodiments, where the first measurement report includes first information, the first information may include a first bitmap or first encoded information.
[0214] In some embodiments, where the first measurement report is determined based on first information indicated by the network device, the first information may include a first bitmap.
[0215] In some embodiments, the terminal device may include second information in the first measurement report. For example, if the network device is configured with a fourth parameter, the terminal device may include second information in the first measurement report.
[0216] In other embodiments, the second information is indicated by the network device. The terminal device can determine the first measurement report based on the second information indicated by the network device.
[0217] It should be noted that when the terminal device includes the second information in the first measurement report, the message carrying the second information can be a third message; while when the network device indicates the second information, the message carrying the second information can be a fourth message. The third message and the fourth message are different messages.
[0218] In some embodiments, the second information can be used to indicate which measurement results are included and excluded in the second measurement report. For example, the second information can indicate the temporal pattern information of the measurement results reported by the terminal device for one or more reporting objects between measurement reports. As an example, the terminal device can use the second information in the first measurement report to indicate the temporal pattern information of multiple measurement results for a reporting object in the second measurement report. For example, the terminal device will report the measurement results from which of the five measurement times in the second measurement report, and will not report the measurement results from which of the five measurement times. That is, the terminal device can report in the current measurement report (i.e., the first measurement report) which measurement results of reporting objects it plans to report and which measurement results of reporting objects it plans not to report in the measurement report transmitted later (i.e., the second measurement report).
[0219] In some embodiments, the second measurement report may be the first measurement report. In other embodiments, the second measurement report may be a measurement report transmitted by the terminal device after the first measurement report. For example, the second measurement report is the next measurement report transmitted after the first measurement report transmitted by the terminal device.
[0220] This application does not limit the implementation method of the second information indicating the measurement results included and excluded in the second measurement report. As one possible implementation, the second information can indicate the measurement results included and excluded in the second measurement report using a bitmap. As another possible implementation, the second information can indicate the measurement results included and excluded in the second measurement report using ASN.1 encoding.
[0221] In some embodiments, the second information may include a second bitmap. The second bitmap may include Q bits, each corresponding to one of the Q reporting objects. The second measurement report may include the measurement result corresponding to the first bit (e.g., a bit with a value of 1) among the Q bits, but may not include the measurement result corresponding to the second bit (e.g., a bit with a value of 0) among the Q bits.
[0222] In some embodiments, the Q reporting objects corresponding to the Q bits in the second bit diagram are arranged in ascending order according to time sequence.
[0223] In some embodiments, the Q reporting objects corresponding to the Q bits in the second bit diagram are arranged in reverse chronological order.
[0224] In some embodiments, the second information may include second encoded information determined based on the ASN.1 encoding method. The second encoded information may be used to indicate the presence or absence of the Q optional information units. Each of the Q optional information units corresponds one-to-one with one of the Q reporting objects.
[0225] In some embodiments, the second measurement report may include measurement results corresponding to the present information units among the Q optional information units, and the second measurement report may not include measurement results corresponding to the non-present information units among the Q optional information units. For example, if a measurement result in the second measurement report is absent, it indicates that the measurement result was skipped.
[0226] In some embodiments, if the second information includes second coded information determined based on the ASN.1 encoding method, it is necessary to specify the temporal order of the Q reporting objects (or Q optional information units) in the list. For example, the protocol may specify that the Q reporting objects in the list are arranged in ascending chronological order. Alternatively, the protocol may specify that the Q reporting objects in the list are arranged in descending chronological order.
[0227] In some embodiments, where the second measurement report includes second information, the second information may include a second bitmap or second encoded information.
[0228] In some embodiments, where the second measurement report is determined based on second information indicated by the network device, the second information may include a second bitmap.
[0229] In some embodiments, the terminal device may choose to report measurement results at certain measurement reporting intervals. Alternatively, the terminal device may choose to skip reporting measurement results at some measurement reporting intervals. In this case, the measurement skipped by the terminal device can be considered to occur between two measurement reporting intervals, or in other words, the measurement skipped by the terminal device occurs within the entire measurement reporting interval. In this scenario, if the terminal device does not report a certain measurement result, there are two possibilities. One possibility is that the terminal device can measure the reporting object (e.g., a cell), but wants to skip reporting that object in the measurement report. The other possibility is that the reporting object is not within the range allowed by the network device; for example, the network device is configured to allow the terminal device to report measurement results for a maximum of 5 cells, but this cell is ranked sixth or later. Therefore, the terminal device needs to indicate in the first measurement report whether the unreported reporting object was skipped.
[0230] Based on this, as one possible implementation, the terminal device can include second information in the first measurement report. This second information indicates which reporting objects will be skipped and which will be reported in the second measurement report (such as a measurement report transmitted after the first measurement report). For example, the terminal device can indicate the second information using a second bitmap.
[0231] As another possible implementation, the terminal device may only report the identification information of a specific reporting object (such as a cell) in the first measurement report, but not the measurement results. In this case, it can be considered that the terminal device skips the reporting of the measurement results for that reporting object.
[0232] In some embodiments, once the network device knows which reporting objects' measurements are skipped, it can choose to predict the skipped measurements using a model.
[0233] To facilitate understanding, the methods of this application are described below with reference to several embodiments. It should be noted that the embodiments described below are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, any details not described in detail below (such as the first parameter, second parameter, first information, second information, etc.) can be found in the above description.
[0234] Example 1:
[0235] Suppose that the model on the network device side requires measurement results periodically reported by the terminal device as input, and the measurement reporting interval may be less than the existing minimum measurement reporting interval, i.e., 120ms. The terminal device needs to report all measurement results within one measurement reporting interval.
[0236] In this scenario, the network device can be configured with a measurement task that requires the terminal device to measure a specific frequency point and to report the measurement results of multiple neighboring cells with the best signal strength at intervals. In the same configuration message, the network device will configure a second parameter. This second parameter can indicate the maximum number of measurement results that can be reported in a single measurement report for a given object (e.g., a cell). For example, the second parameter could be set to `maxNumberPerInterval>=2`.
[0237] In this scenario, after identifying a specific reporting target (such as a cell), the terminal device can determine the number of measurement results for that target to be reported in the first measurement report based on the second parameter. It should be noted that regardless of whether the second parameter is configured, the terminal device will report at least one measurement result for that target after determining that it needs to report its measurement results. For example, if the second parameter is set to 5, the terminal device may report 1 to 5 measurement results.
[0238] In some embodiments, the terminal device needs to indicate information in the time or spatial domain of the reported multiple measurement results in the first measurement report. In the time domain, the terminal device may indicate the temporal order of the multiple measurement results in the first measurement report and / or the interval between the measurement times corresponding to the multiple measurement results in the first measurement report.
[0239] For example, referring back to Figure 9, the terminal device reports three measurement results for a certain cell in the first measurement report, namely m1, m2, and m3. These three measurement results are arranged in ascending chronological order (i.e., m3 is the latest measurement result). The terminal device can further indicate the time interval between these three measurement results.
[0240] Example 2:
[0241] Suppose that the model on the network device side requires measurement results periodically reported by the terminal device as input, and the measurement reporting interval may be less than the existing minimum measurement reporting interval, i.e., 120ms. The terminal device needs to report all measurement results within one measurement reporting interval.
[0242] In this scenario, the network device can configure a third parameter to the terminal device. This third parameter can be used to indicate the number of measurement results included in the first measurement report (e.g., the number of measurement results reported for a single reporting object) and / or the interval between the measurement times corresponding to the measurement results in the first measurement report. For example, as shown in Figure 9, the network device can directly configure the number of measurement results to be reported in the first measurement report shown in Figure 9 and / or the interval between the measurement times corresponding to the measurement results in the first measurement report to the terminal device.
[0243] In this case, when the terminal device reports the first measurement report, it only needs to display the different measurement results in chronological order according to the agreed method.
[0244] Example 3:
[0245] Suppose that the model on the network device side requires the measurement results periodically reported by the terminal device as input, and the measurement reporting interval may be less than the existing minimum measurement reporting interval, i.e., 120ms. The terminal device needs to report the measurement results at a portion of the measurement time within a measurement reporting interval.
[0246] In this scenario, the network device can configure a measurement task for the terminal device and a fourth parameter, such as MRRT. This parameter represents the proportion of measurement opportunities that the terminal device can skip in the time domain. In some embodiments, the network device can also configure a second parameter.
[0247] In this case, when the terminal device reports the measurement results of a certain reporting object (such as a cell), it can determine which measurement times need to be reported based on the MRRT parameter and the second parameter, and report these measurement results according to a fixed pattern.
[0248] For example, in the first measurement report, the terminal device can have 5 measurement opportunities. If the network device is configured with MRRT=2 / 5, it means that the terminal device only needs to measure the results at 3 of the 5 measurement opportunities. Since the network device does not specify a particular reporting mode, the terminal device can independently choose which 3 measurement opportunities to measure and report.
[0249] It should be noted that once the terminal device determines the pattern for reporting these measurement results, that reporting pattern will not change. This is because the network device needs to use this pattern to determine the measurement results to be predicted at the remaining measurement opportunities.
[0250] In some embodiments, the terminal device needs to include first information in the first measurement report. Referring to the example in Figure 10, the terminal device needs to indicate the measurement results at the original five measurement points in the first measurement report. According to the time sequence, the second and fourth measurement points are skipped, that is, the terminal device only reports the measurement results at the first, third, and fifth measurement points.
[0251] Regarding encoding methods, there are several ways for the terminal device to indicate the first information. One implementation is that the terminal device can use a first bitmap to represent the total number of possible measurement results and which of these results are skipped. Each bit in the first bitmap can arrange the measurement results in ascending or descending chronological order. Another implementation is that the terminal device can use a list format as shown in ASN.1 to list each measurement result, and each measurement result uses an optional information element in ASN.1 to indicate its presence. If a measurement result is absent, it indicates that the measurement result was skipped. In some embodiments, the protocol needs to fix whether the measurement results in the list are arranged in ascending or descending chronological order.
[0252] After receiving the first measurement report, the network device can predict the measurement results of the unreported measurement times (such as the second and fourth measurement times) in the next measurement reporting interval based on the measurement results received at the measurement time (such as the 1st, 3rd, and 5th measurement times), and so on.
[0253] Example 4:
[0254] Suppose that the model on the network device side requires the measurement results periodically reported by the terminal device as input, and the measurement reporting interval may be less than the existing minimum measurement reporting interval, i.e., 120ms. The terminal device needs to report the measurement results at a portion of the measurement time within a measurement reporting interval.
[0255] Network devices can configure a fourth parameter for terminal devices. For example, a network device can configure a terminal device to report specific patterns in the first measurement report (such as reporting measurement results at specific measurement times). The terminal device can then report according to the network device's configuration.
[0256] For example, referring to Figure 10, the network device can be configured to allow the terminal device to report measurement results at the 1st, 3rd, and 5th measurement times. In this case, the terminal device can report the measurement results at the 1st, 3rd, and 5th measurement times according to the network device's configuration, while skipping the measurement and reporting at the 2nd and 4th measurement times.
[0257] In this case, the terminal device only needs to report the measurement results in the agreed time sequence.
[0258] Example 5:
[0259] Suppose that the model on the network device side requires the measurement results periodically reported by the terminal device as input, and the measurement reporting interval may be less than the existing minimum measurement reporting interval, i.e., 120ms. The terminal device needs to report the measurement results at a portion of the measurement time within a measurement reporting interval.
[0260] Terminal devices can choose to report measurement results at certain measurement reporting intervals. In this case, the measurement time that the terminal device can skip is between two measurement reporting intervals.
[0261] If a terminal device fails to report a measurement result, there are two possibilities. One is that the terminal device can measure the target (e.g., a cell) but wants to skip reporting the measurement result for that target. The other is that the target (e.g., a cell) is no longer within the range allowed to be reported by the network device. For example, the network device is configured to allow the terminal device to report a maximum of 5 cells, but this cell is listed as the 6th or later.
[0262] In this scenario, the terminal device needs to provide relevant information (i.e., second information) in the measurement report. For example, the terminal device can specify in the first measurement report which measurement results of reporting objects will be skipped and which will be reported in the second measurement report (e.g., at certain future measurement reporting intervals), for instance, using a second bitmap. Alternatively, the terminal device can report only the identification information of a specific reporting object (e.g., a cell) in the first measurement report, but without reporting the measurement results.
[0263] Network devices can use the methods described above to determine which measurements from which reporting objects were skipped. In this case, the network device can choose to use a model to predict which measurements were skipped.
[0264] Example 6:
[0265] Suppose that the model on the network device side requires the terminal device to periodically report the measurement results of a portion of the beam.
[0266] In some implementations, network devices can configure a fourth parameter, such as MRRS, when configuring measurement tasks. This parameter indicates the proportion of beams that the terminal device can skip out of all measured beams in the cell being measured.
[0267] In this scenario, the terminal device can autonomously select a subset of beams for measurement based on the configured MRRS. Subsequently, the terminal device reports the measurement results for this subset of beams in the first measurement report (e.g., beam-level measurement results for Layer 1). Each measurement result may include beam identification information and specific measurement details.
[0268] In other implementations, when configuring measurement tasks, network devices can directly configure a beam subset to the terminal device.
[0269] In this scenario, the terminal device can measure a subset of beams configured by the network device. Then, the terminal device reports the measurement results of the beams in that subset (such as layer 1 beam-level measurement results) in the first measurement report.
[0270] Example 7:
[0271] When a network device requests a terminal device to report Layer 1 beam-level measurement results, it may only need the measurement results of a portion of the beams. This is because beams with weaker signals do not provide much help for model inference. However, a cell often has many beams that need to be measured and reported, which can lead to excessive signaling load on the radio interface.
[0272] In this scenario, when configuring measurement tasks, network devices can simultaneously configure a first parameter (i.e., a filtering parameter), allowing terminal devices to filter out a portion of Layer 1 beam-level measurement results based on this parameter. The first parameter may include a signal strength or quality threshold, and the maximum number of beams (N) that can be reported.
[0273] In this scenario, after the terminal device measures the Layer 1 beam-level measurement results of some beams in a cell, it can filter according to the following logic: if the number of beams with a signal strength or signal threshold is ≥ N, then the top N beams are selected; otherwise, beams that meet the requirement of having a signal strength or signal threshold are selected. This is the judgment logic when both the signal strength or signal threshold and the number of beams N are configured simultaneously. If only the signal strength or signal threshold is configured, then all beams with a signal strength or signal threshold are selected. If only the number of beams N is configured, then the top N beams are selected, unless the number of measured beams is less than N. In the above judgment logic, if no beam meets the condition, then the top 1 beam is selected.
[0274] Example 8:
[0275] In the above embodiments, the terminal device may select up to 8 cells (i.e., maxReportCells <= 8) for reporting. However, the limitation of 8 cells is too much for better prediction results.
[0276] In this case, the number of cells allowed to be reported in each measurement report configured for the network device can be greater than 8. For example, maxReportCells = 16, 32, 64, etc.
[0277] The method embodiments of this application have been described in detail above with reference to Figures 1 to 10. The apparatus embodiments of this application will be described in detail below with reference to Figures 11 to 13. It should be understood that the descriptions of the method embodiments correspond to the descriptions of the apparatus embodiments; therefore, any parts not described in detail can be referred to the preceding method embodiments.
[0278] Figure 11 is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. The terminal device 1100 shown in Figure 11 includes a sending module 1110. The sending module 1110 is used to send a first measurement report to a network device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0279] In some embodiments, the first measurement report targets one or more reporting objects including cells and / or beams.
[0280] In some embodiments, the terminal device further includes: a first receiving module 1120, configured to receive a first parameter sent by the network device, the first parameter being used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams, and the first measurement report being used to report the measurement results of the target cell and / or beam.
[0281] In some embodiments, the first parameter is used to indicate one or more of the following: a first threshold related to the signal quality of the cell; a second threshold related to the signal strength of the cell; a third threshold related to the signal quality of the beam; a fourth threshold related to the signal strength of the beam; the number M of cells reported in the first measurement report, where M is a positive integer; and the number N of beams reported in the first measurement report, where N is a positive integer.
[0282] In some embodiments, if the number of first-type cells in the one or more cells is greater than or equal to M, then the target cell includes M first-type cells in the one or more cells, wherein the signal quality and / or signal strength of the M first-type cells is greater than or equal to that of other cells in the one or more cells besides the M first-type cells; and / or, if the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, if no first-type cells exist in the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength in the one or more cells; wherein, the first-type cells are cells with signal quality greater than or equal to the first threshold, and / or, the first-type cells are cells with signal strength greater than or equal to the second threshold.
[0283] In some embodiments, if the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, wherein the signal quality and / or signal strength of the N first-type beams is greater than or equal to the signal quality and / or signal strength of other beams in the one or more beams besides the N first-type beams; and / or, if the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, if no first-type beams are present in the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; wherein, the first-type beam is a beam with signal quality greater than or equal to the third threshold, and / or the first-type beam is a beam with signal slightly greater than or equal to the fourth threshold.
[0284] In some embodiments, the first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to chronological order.
[0285] In some embodiments, the first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
[0286] In some embodiments, the terminal device further includes: a second receiving module, configured to receive a second parameter sent by the network device, the second parameter indicating the maximum number of measurement results allowed to be reported for a reporting object.
[0287] In some embodiments, the determining module is configured to determine, based on the second parameter, the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
[0288] In some embodiments, a third receiving module is configured to receive a third parameter sent by the network device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
[0289] In some embodiments, the fourth receiving module is configured to receive a fourth parameter sent by the network device, the fourth parameter being used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs to report the measurement results or not.
[0290] In some embodiments, the first measurement report includes first information or the first measurement report is determined based on first information indicated by the network device, the first information indicating measurement results included and excluded from the first measurement report.
[0291] In some embodiments, the first information includes a first bitmap, which includes K bits, each of which corresponds to one of K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
[0292] In some embodiments, the first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
[0293] In some embodiments, the first measurement report includes second information or the first measurement report is determined based on second information indicated by the network device, the second information indicating reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
[0294] In some embodiments, the second information includes a second bitmap, which includes Q bits, each of which corresponds to a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
[0295] In some embodiments, the first measurement report includes the second information, and the second information includes second encoded information determined based on the ASN.1 encoding method. The second encoded information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
[0296] In some embodiments, the first measurement report is carried via an RRC message or a MAC CE.
[0297] In some embodiments, the first measurement report is a periodically reported measurement report.
[0298] In some embodiments, the first measurement report includes measurement results for S cells, where S is greater than 8.
[0299] In some embodiments, S takes the value of 16, 32, or 64.
[0300] In some embodiments, the one or more measurement results include one or more of the following: layer 1 beam-level measurement results; layer 1 cell-level measurement results; layer 3 beam-level measurement results; layer 3 cell-level measurement results.
[0301] In some embodiments, the first measurement report is determined based on measuring one or more of the following: a reference signal of the serving cell of the terminal device; a reference signal of the neighboring cells of the terminal device; and a reference signal of the candidate cells of the terminal device.
[0302] In some embodiments, the candidate cell is a candidate cell configured by the network device for LTM handover.
[0303] In some embodiments, the transmitting module 1110 may be a transceiver 1330. The terminal device 1100 may also include a processor 1310 and a memory 1320, as shown in FIG13.
[0304] Figure 12 is a schematic diagram of the structure of a network device provided in an embodiment of this application. The network device 1200 shown in Figure 12 includes a receiving module 1210. The receiving module 1210 is used to receive a first measurement report sent by a terminal device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
[0305] In some embodiments, the first measurement report targets one or more reporting objects including cells and / or beams.
[0306] In some embodiments, the network device further includes: a first transmitting module 1220, configured to transmit a first parameter to the terminal device, the first parameter being used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams, and the first measurement report being used to report the measurement results of the target cell and / or beam.
[0307] In some embodiments, the first parameter is used to indicate one or more of the following: a first threshold related to the signal quality of the cell; a second threshold related to the signal strength of the cell; a third threshold related to the signal quality of the beam; a fourth threshold related to the signal strength of the beam; the number M of cells reported in the first measurement report, where M is a positive integer; and the number N of beams reported in the first measurement report, where N is a positive integer.
[0308] In some embodiments, if the number of first-type cells in the one or more cells is greater than or equal to M, then the target cell includes M first-type cells in the one or more cells, wherein the signal quality and / or signal strength of the M first-type cells is greater than or equal to that of other cells in the one or more cells besides the M first-type cells; and / or, if the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, if no first-type cells exist in the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength in the one or more cells; wherein, the first-type cells are cells with signal quality greater than or equal to the first threshold, and / or, the first-type cells are cells with signal strength greater than or equal to the second threshold.
[0309] In some embodiments, if the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, wherein the signal quality and / or signal strength of the N first-type beams is greater than or equal to the signal quality and / or signal strength of other beams in the one or more beams besides the N first-type beams; and / or, if the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, if no first-type beams are present in the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; wherein, the first-type beam is a beam with signal quality greater than or equal to the third threshold, and / or the first-type beam is a beam with signal slightly greater than or equal to the fourth threshold.
[0310] In some embodiments, the first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to chronological order.
[0311] In some embodiments, the first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
[0312] In some embodiments, the second sending module is configured to send a second parameter to the terminal device, the second parameter indicating the maximum number of measurement results allowed to be reported for a reporting object.
[0313] In some embodiments, the second parameter is used by the terminal device to determine the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
[0314] In some embodiments, a third sending module is configured to send a third parameter to the terminal device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
[0315] In some embodiments, the fourth sending module is configured to send a fourth parameter to the terminal device, the fourth parameter being used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs or does not need to report the measurement results.
[0316] In some embodiments, the first measurement report includes first information or the first measurement report is determined based on first information indicated by the network device, the first information indicating measurement results included and excluded from the first measurement report.
[0317] In some embodiments, the first information includes a first bitmap, which includes K bits, each of which corresponds to one of K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
[0318] In some embodiments, the first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
[0319] In some embodiments, the first measurement report includes second information or the first measurement report is determined based on second information indicated by the network device, the second information indicating reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
[0320] In some embodiments, the second information includes a second bitmap, which includes Q bits, each of which corresponds to a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
[0321] In some embodiments, the first measurement report includes the second information, and the second information includes second encoded information determined based on the ASN.1 encoding method. The second encoded information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
[0322] In some embodiments, the first measurement report is carried via an RRC message or a MAC CE.
[0323] In some embodiments, the first measurement report is a periodically reported measurement report.
[0324] In some embodiments, the first measurement report includes measurement results for S cells, where S is greater than 8.
[0325] In some embodiments, S takes the value of 16, 32, or 64.
[0326] In some embodiments, the one or more measurement results include one or more of the following: layer 1 beam-level measurement results; layer 1 cell-level measurement results; layer 3 beam-level measurement results; layer 3 cell-level measurement results.
[0327] In some embodiments, the first measurement report is determined based on measuring one or more of the following: a reference signal of the serving cell of the terminal device; a reference signal of the neighboring cells of the terminal device; and a reference signal of the candidate cells of the terminal device.
[0328] In some embodiments, the candidate cell is a candidate cell configured by the network device for LTM handover.
[0329] In some embodiments, the receiving module 1210 may be a transceiver 1330. The network device 1200 may also include a processor 1310 and a memory 1320, as shown in FIG13.
[0330] Figure 13 is a schematic structural diagram of a communication device according to an embodiment of this application. The dashed lines in Figure 13 indicate that the unit or module is optional. This device 1300 can be used to implement the methods described in the above method embodiments. Device 1300 can be a chip, a terminal device, or a network device.
[0331] Apparatus 1300 may include one or more processors 1310. The processor 1310 may support apparatus 1300 in implementing the methods described in the preceding method embodiments. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.
[0332] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store a program that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the preceding method embodiments. The memories 1320 may be independent of the processor 1310 or integrated within the processor 1310.
[0333] The device 1300 may also include a transceiver 1330. The processor 1310 can communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 can send and receive data with other devices or chips via the transceiver 1330.
[0334] This application also provides a computer-readable storage medium for storing a program. This computer-readable storage medium can be applied to a terminal device or network device provided in this application, and the program causes a computer to execute the methods performed by the terminal device or network device in various embodiments of this application.
[0335] This application also provides a computer program product. The computer program product includes a program. This computer program product can be applied to a terminal device or network device provided in this application embodiment, and the program causes a computer to execute the methods performed by the terminal device or network device in the various embodiments of this application.
[0336] This application also provides a computer program. This computer program can be applied to a terminal device or network device provided in this application, and the computer program causes a computer to execute the methods performed by the terminal device or network device in various embodiments of this application.
[0337] It should be understood that the terms "system" and "network" in this application can be used interchangeably. Furthermore, the terminology used in this application is only for explaining specific embodiments of the application and is not intended to limit the application. The terms "first," "second," "third," and "fourth," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. In addition, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0338] In the embodiments of this application, the term "instruction" can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.
[0339] In the embodiments of this application, "B corresponding to A" means that B is associated with A, and B can be determined based on A. However, it should also be understood that determining B based on A does not mean that B is determined solely based on A; B can also be determined based on A and / or other information.
[0340] In the embodiments of this application, the term "correspondence" can indicate a direct or indirect correspondence between two things, or an association between two things, or a relationship such as instruction and being instructed, configuration and being configured.
[0341] In the embodiments of this application, the term "comprising" can refer to direct inclusion or indirect inclusion. Optionally, "comprising" in the embodiments of this application can be replaced with "instructing" or "used to determine". For example, "A includes B" can be replaced with "A instructs B" or "A is used to determine B".
[0342] In this application embodiment, "predefined" or "preconfigured" can be implemented by pre-storing corresponding codes, tables, or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method. For example, predefined can refer to what is defined in the protocol.
[0343] In this application embodiment, the "protocol" may refer to a standard protocol in the field of communication, such as the LTE protocol, the NR protocol, and related protocols applied to future communication systems. This application does not limit this.
[0344] In the embodiments of this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0345] In the various embodiments of this application, the order of the above-mentioned processes does not imply 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 this application.
[0346] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
[0347] The units described as separate components may or may not be physically separate. 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 the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0348] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0349] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can read or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., digital video discs, DVDs) or semiconductor media (e.g., solid-state disks, SSDs), etc.
[0350] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A communication method, characterized in that, include: The terminal device sends a first measurement report to the network device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
2. The method according to claim 1, characterized in that, The first measurement report targets one or more reporting objects, including cells and / or beams.
3. The method according to claim 1 or 2, characterized in that, The method further includes: The terminal device receives a first parameter sent by the network device. The first parameter is used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams. The first measurement report is used to report the measurement results of the target cell and / or beam.
4. The method according to claim 3, characterized in that, The first parameter is used to indicate one or more of the following: The first threshold related to the signal quality of the cell; A second threshold related to the signal strength of the cell; A third threshold related to the signal quality of the beam; A fourth threshold related to the signal strength of the beam; The first measurement report reports the number of cells M, where M is a positive integer; The first measurement report reports the number of beams N, where N is a positive integer.
5. The method according to claim 4, characterized in that: If the number of Class I cells in the one or more cells is greater than or equal to M, then the target cell includes M Class I cells from the one or more cells, wherein the signal quality and / or signal strength of the M Class I cells is greater than or equal to that of the other cells in the one or more cells besides the M Class I cells; and / or, If the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, If there is no Class I cell among the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength among the one or more cells; Wherein, the first type of cell is a cell with signal quality greater than or equal to the first threshold, and / or, the first type of cell is a cell with signal strength greater than or equal to the second threshold.
6. The method according to claim 4 or 5, characterized in that: If the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, and the signal quality and / or signal strength of the N first-type beams are greater than or equal to the other beams in the one or more beams besides the N first-type beams. And / or, If the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, If no first-type beam is present among the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; Wherein, the first type of beam is a beam with signal quality greater than or equal to the third threshold, and / or the first type of beam is a beam with signal slightly greater than or equal to the fourth threshold.
7. The method according to any one of claims 1-6, characterized in that, The first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to their chronological order.
8. The method according to any one of claims 1-7, characterized in that, The first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
9. The method according to any one of claims 1-8, characterized in that, The method further includes: The terminal device receives a second parameter sent by the network device, the second parameter indicating the maximum number of measurement results allowed to be reported for a reporting object.
10. The method according to claim 9, characterized in that, The method further includes: The terminal device determines the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report based on the second parameter.
11. The method according to any one of claims 1-10, characterized in that, The method further includes: The terminal device receives a third parameter sent by the network device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
12. The method according to any one of claims 1-11, characterized in that, The method further includes: The terminal device receives a fourth parameter sent by the network device. The fourth parameter is used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs to report the measurement results or not.
13. The method according to any one of claims 1-12, characterized in that, The first measurement report includes first information or is determined based on first information indicated by the network device, wherein the first information is used to indicate measurement results included and excluded from the first measurement report.
14. The method according to claim 13, characterized in that, The first information includes a first bitmap, which includes K bits. The K bits correspond one-to-one with K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
15. The method according to claim 13, characterized in that, The first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
16. The method according to any one of claims 1-15, characterized in that, The first measurement report includes second information or is determined based on second information indicated by the network device. The second information is used to indicate reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
17. The method according to claim 16, characterized in that, The second information includes a second bitmap, which includes Q bits, each of which corresponds one-to-one with a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
18. The method according to claim 16, characterized in that, The first measurement report includes the second information, and the second information includes second encoding information determined based on the ASN.1 encoding method. The second encoding information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
19. The method according to any one of claims 1-18, characterized in that, The first measurement report is carried via an RRC message or a MAC CE.
20. The method according to any one of claims 1-19, characterized in that, The first measurement report is a periodically submitted measurement report.
21. The method according to any one of claims 1-20, characterized in that, The first measurement report includes measurement results for S cells, where S is greater than 8.
22. The method according to claim 21, characterized in that, The value of S can be 16, 32 or 64.
23. The method according to any one of claims 1-22, characterized in that, The one or more measurement results include one or more of the following: Beam-level measurement results for Layer 1; Cell-level measurement results for Layer 1; Beam-level measurement results for layer 3; The results of the cell-level measurement at layer 3.
24. The method according to any one of claims 1-23, characterized in that, The first measurement report is determined based on one or more of the following measurements: The reference signal of the serving cell of the terminal device; The reference signal of the neighboring cell of the terminal device; The reference signal of the candidate cell of the terminal device.
25. The method according to claim 24, characterized in that, The candidate cell is a candidate cell configured by the network device for LTM handover.
26. A communication method, characterized in that, include: The network device receives a first measurement report sent by the terminal device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
27. The method according to claim 26, characterized in that, The first measurement report targets one or more reporting objects, including cells and / or beams.
28. The method according to claim 26 or 27, characterized in that, The method further includes: The network device sends a first parameter to the terminal device. The first parameter is used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams. The first measurement report is used to report the measurement results of the target cell and / or beam.
29. The method according to claim 28, characterized in that, The first parameter is used to indicate one or more of the following: The first threshold related to the signal quality of the cell; A second threshold related to the signal strength of the cell; A third threshold related to the signal quality of the beam; A fourth threshold related to the signal strength of the beam; The first measurement report reports the number of cells M, where M is a positive integer; The first measurement report reports the number of beams N, where N is a positive integer.
30. The method according to claim 29, characterized in that: If the number of Class I cells in the one or more cells is greater than or equal to M, then the target cell includes M Class I cells from the one or more cells, wherein the signal quality and / or signal strength of the M Class I cells is greater than or equal to that of the other cells in the one or more cells besides the M Class I cells; and / or, If the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, If there is no Class I cell among the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength among the one or more cells; Wherein, the first type of cell is a cell with signal quality greater than or equal to the first threshold, and / or, the first type of cell is a cell with signal strength greater than or equal to the second threshold.
31. The method according to claim 29 or 30, characterized in that: If the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, and the signal quality and / or signal strength of the N first-type beams are greater than or equal to the other beams in the one or more beams besides the N first-type beams. And / or, If the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, If no first-type beam is present among the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; Wherein, the first type of beam is a beam with signal quality greater than or equal to the third threshold, and / or the first type of beam is a beam with signal slightly greater than or equal to the fourth threshold.
32. The method according to any one of claims 26-31, characterized in that, The first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to their chronological order.
33. The method according to any one of claims 26-32, characterized in that, The first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
34. The method according to any one of claims 26-33, characterized in that, The method further includes: The network device sends a second parameter to the terminal device, the second parameter indicating the maximum number of measurement results allowed to be reported for a reporting object.
35. The method according to claim 34, characterized in that, The second parameter is used by the terminal device to determine the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
36. The method according to any one of claims 26-35, characterized in that, The method further includes: The network device sends a third parameter to the terminal device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
37. The method according to any one of claims 26-36, characterized in that, The method further includes: The network device sends a fourth parameter to the terminal device, the fourth parameter being used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs or does not need to report the measurement results.
38. The method according to any one of claims 26-37, characterized in that, The first measurement report includes first information or is determined based on first information indicated by the network device, wherein the first information is used to indicate measurement results included and excluded from the first measurement report.
39. The method according to claim 38, characterized in that, The first information includes a first bitmap, which includes K bits. The K bits correspond one-to-one with K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
40. The method according to claim 38, characterized in that, The first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
41. The method according to any one of claims 26-40, characterized in that, The first measurement report includes second information or is determined based on second information indicated by the network device. The second information is used to indicate reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
42. The method according to claim 41, characterized in that, The second information includes a second bitmap, which includes Q bits, each of which corresponds one-to-one with a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
43. The method according to claim 41, characterized in that, The first measurement report includes the second information, and the second information includes second encoding information determined based on the ASN.1 encoding method. The second encoding information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
44. The method according to any one of claims 26-43, characterized in that, The first measurement report is carried via an RRC message or a MAC CE.
45. The method according to any one of claims 26-44, characterized in that, The first measurement report is a periodically submitted measurement report.
46. The method according to any one of claims 26-45, characterized in that, The first measurement report includes measurement results for S cells, where S is greater than 8.
47. The method according to claim 46, characterized in that, The value of S can be 16, 32 or 64.
48. The method according to any one of claims 26-47, characterized in that, The one or more measurement results include one or more of the following: Beam-level measurement results for Layer 1; Cell-level measurement results for Layer 1; Beam-level measurement results for layer 3; The results of the cell-level measurement at layer 3.
49. The method according to any one of claims 26-48, characterized in that, The first measurement report is determined based on one or more of the following measurements: The reference signal of the serving cell of the terminal device; The reference signal of the neighboring cell of the terminal device; The reference signal of the candidate cell of the terminal device.
50. The method according to claim 49, characterized in that, The candidate cell is a candidate cell configured by the network device for LTM handover.
51. A terminal device, characterized in that, include: A sending module is configured to send a first measurement report to a network device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
52. The terminal device according to claim 51, characterized in that, The first measurement report targets one or more reporting objects, including cells and / or beams.
53. The terminal device according to claim 51 or 52, characterized in that, The terminal device also includes: The first receiving module is configured to receive a first parameter sent by the network device. The first parameter is used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams. The first measurement report is used to report the measurement results of the target cell and / or beam.
54. The terminal device according to claim 53, characterized in that, The first parameter is used to indicate one or more of the following: The first threshold related to the signal quality of the cell; A second threshold related to the signal strength of the cell; A third threshold related to the signal quality of the beam; A fourth threshold related to the signal strength of the beam; The first measurement report reports the number of cells M, where M is a positive integer; The first measurement report reports the number of beams N, where N is a positive integer.
55. The terminal device according to claim 54, characterized in that: If the number of Class I cells in the one or more cells is greater than or equal to M, then the target cell includes M Class I cells from the one or more cells, wherein the signal quality and / or signal strength of the M Class I cells is greater than or equal to that of the other cells in the one or more cells besides the M Class I cells; and / or, If the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, If there is no Class I cell among the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength among the one or more cells; Wherein, the first type of cell is a cell with signal quality greater than or equal to the first threshold, and / or, the first type of cell is a cell with signal strength greater than or equal to the second threshold.
56. The terminal device according to claim 54 or 55, characterized in that: If the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, and the signal quality and / or signal strength of the N first-type beams are greater than or equal to the other beams in the one or more beams besides the N first-type beams. And / or, If the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, If no first-type beam is present among the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; Wherein, the first type of beam is a beam with signal quality greater than or equal to the third threshold, and / or the first type of beam is a beam with signal slightly greater than or equal to the fourth threshold.
57. The terminal device according to any one of claims 51-56, characterized in that, The first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to their chronological order.
58. The terminal device according to any one of claims 51-57, characterized in that, The first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
59. The terminal device according to any one of claims 51-58, characterized in that, The terminal device also includes: The second receiving module is used to receive a second parameter sent by the network device, the second parameter being used to indicate the maximum number of measurement results allowed to be reported for a reporting object.
60. The terminal device according to claim 59, characterized in that, The terminal device also includes: The determining module is configured to determine, based on the second parameter, the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
61. The terminal device according to any one of claims 51-60, characterized in that, The terminal device also includes: The third receiving module is used to receive a third parameter sent by the network device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
62. The terminal device according to any one of claims 51-61, characterized in that, The terminal device also includes: The fourth receiving module is used to receive a fourth parameter sent by the network device. The fourth parameter is used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs to report the measurement results or not.
63. The terminal device according to any one of claims 51-62, characterized in that, The first measurement report includes first information or is determined based on first information indicated by the network device, wherein the first information is used to indicate measurement results included and excluded from the first measurement report.
64. The terminal device according to claim 63, characterized in that, The first information includes a first bitmap, which includes K bits. The K bits correspond one-to-one with K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
65. The terminal device according to claim 63, characterized in that, The first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
66. The terminal device according to any one of claims 51-65, characterized in that, The first measurement report includes second information or is determined based on second information indicated by the network device. The second information is used to indicate reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
67. The terminal device according to claim 66, characterized in that, The second information includes a second bitmap, which includes Q bits, each of which corresponds one-to-one with a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
68. The terminal device according to claim 66, characterized in that, The first measurement report includes the second information, and the second information includes second encoding information determined based on the ASN.1 encoding method. The second encoding information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
69. The terminal device according to any one of claims 51-68, characterized in that, The first measurement report is carried via an RRC message or a MAC CE.
70. The terminal device according to any one of claims 51-69, characterized in that, The first measurement report is a periodically submitted measurement report.
71. The terminal device according to any one of claims 51-70, characterized in that, The first measurement report includes measurement results for S cells, where S is greater than 8.
72. The terminal device according to claim 71, characterized in that, The value of S can be 16, 32 or 64.
73. The terminal device according to any one of claims 51-72, characterized in that, The one or more measurement results include one or more of the following: Beam-level measurement results for Layer 1; Cell-level measurement results for Layer 1; Beam-level measurement results for layer 3; The results of the cell-level measurement at layer 3.
74. The terminal device according to any one of claims 51-73, characterized in that, The first measurement report is determined based on one or more of the following measurements: The reference signal of the serving cell of the terminal device; The reference signal of the neighboring cell of the terminal device; The reference signal of the candidate cell of the terminal device.
75. The terminal device according to claim 74, characterized in that, The candidate cell is a candidate cell configured by the network device for LTM handover.
76. A network device, characterized in that, include: A receiving module is configured to receive a first measurement report sent by a terminal device. The first measurement report includes measurement results for one or more reporting objects, wherein the measurement results for each of the one or more reporting objects include one or more measurement results in the time domain.
77. The network device according to claim 76, characterized in that, The first measurement report targets one or more reporting objects, including cells and / or beams.
78. The network device according to claim 76 or 77, characterized in that, The network device also includes: A first transmitting module is configured to transmit a first parameter to the terminal device, the first parameter being used by the terminal device to select a target cell and / or beam from one or more measured cells and / or beams, and the first measurement report being used to report the measurement results of the target cell and / or beam.
79. The network device according to claim 78, characterized in that, The first parameter is used to indicate one or more of the following: The first threshold related to the signal quality of the cell; A second threshold related to the signal strength of the cell; A third threshold related to the signal quality of the beam; A fourth threshold related to the signal strength of the beam; The first measurement report reports the number of cells M, where M is a positive integer; The first measurement report reports the number of beams N, where N is a positive integer.
80. The network device according to claim 79, characterized in that: If the number of Class I cells in the one or more cells is greater than or equal to M, then the target cell includes M Class I cells from the one or more cells, wherein the signal quality and / or signal strength of the M Class I cells is greater than or equal to that of the other cells in the one or more cells besides the M Class I cells; and / or, If the number of first-type cells in the one or more cells is less than M, then the target cell includes first-type cells in the one or more cells; and / or, If there is no Class I cell among the one or more cells, then the target cell is the cell with the best signal quality and / or signal strength among the one or more cells; Wherein, the first type of cell is a cell with signal quality greater than or equal to the first threshold, and / or, the first type of cell is a cell with signal strength greater than or equal to the second threshold.
81. The network device according to claim 79 or 80, characterized in that: If the number of first-type beams in the one or more beams is greater than or equal to N, then the target beam includes N first-type beams in the one or more beams, and the signal quality and / or signal strength of the N first-type beams are greater than or equal to the other beams in the one or more beams besides the N first-type beams. And / or, If the number of first-type beams in the one or more beams is less than N, then the target beam includes first-type beams in the one or more beams; and / or, If no first-type beam is present among the one or more beams, then the target beam is the beam with the best signal quality and / or signal strength among the one or more beams; Wherein, the first type of beam is a beam with signal quality greater than or equal to the third threshold, and / or the first type of beam is a beam with signal slightly greater than or equal to the fourth threshold.
82. The network device according to any one of claims 76-81, characterized in that, The first measurement report includes multiple measurement results, which are arranged in ascending or descending order in the first measurement report according to their chronological order.
83. The network device according to any one of claims 76-82, characterized in that, The first measurement report includes multiple measurement results, and the first measurement report also indicates the interval between the measurement times corresponding to the multiple measurement results.
84. The network device according to any one of claims 76-83, characterized in that, The network device also includes: The second sending module is used to send a second parameter to the terminal device, the second parameter being used to indicate the maximum number of measurement results allowed to be reported for a reporting object.
85. The network device according to claim 84, characterized in that, The second parameter is used by the terminal device to determine the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
86. The network device according to any one of claims 76-85, characterized in that, The network device also includes: The third sending module is used to send a third parameter to the terminal device, the third parameter being used to indicate the number of measurement results included in the first measurement report and / or the interval between the measurement times corresponding to the measurement results in the first measurement report.
87. The network device according to any one of claims 76-86, characterized in that, The network device also includes: The fourth sending module is used to send a fourth parameter to the terminal device. The fourth parameter is used to indicate the proportion of measurement results for one or more reporting objects, and whether the terminal device needs or does not need to report the measurement results.
88. The network device according to any one of claims 76-87, characterized in that, The first measurement report includes first information or is determined based on first information indicated by the network device, wherein the first information is used to indicate measurement results included and excluded from the first measurement report.
89. The network device according to claim 88, characterized in that, The first information includes a first bitmap, which includes K bits. The K bits correspond one-to-one with K measurement results. The first measurement report includes the measurement results corresponding to the bits with a value of 1 among the K bits, and the first measurement results do not include the measurement results corresponding to the bits with a value of 0 among the K bits.
90. The network device according to claim 88, characterized in that, The first measurement report includes the first information, and the first information includes first encoded information determined based on the ASN.1 encoding method. The first encoded information is used to indicate whether K optional information units exist, and the K optional information units correspond one-to-one with K measurement results.
91. The network device according to any one of claims 76-90, characterized in that, The first measurement report includes second information or is determined based on second information indicated by the network device. The second information is used to indicate reporting objects included and excluded in the second measurement report, wherein the second measurement report is the first measurement report or the second measurement report is a measurement report transmitted by the terminal device after the first measurement report.
92. The network device according to claim 91, characterized in that, The second information includes a second bitmap, which includes Q bits, each of which corresponds one-to-one with a Q reporting object. The second measurement report includes the reporting object corresponding to the bit with a value of 1 among the Q bits, but does not include the reporting object corresponding to the bit with a value of 0 among the Q bits.
93. The network device according to claim 91, characterized in that, The first measurement report includes the second information, and the second information includes second encoding information determined based on the ASN.1 encoding method. The second encoding information is used to indicate whether Q optional information units exist, and the Q optional information units correspond one-to-one with Q reporting objects.
94. The network device according to any one of claims 76-93, characterized in that, The first measurement report is carried via an RRC message or a MAC CE.
95. The network device according to any one of claims 76-94, characterized in that, The first measurement report is a periodically submitted measurement report.
96. The network device according to any one of claims 76-95, characterized in that, The first measurement report includes measurement results for S cells, where S is greater than 8.
97. The network device according to claim 96, characterized in that, The value of S can be 16, 32 or 64.
98. The network device according to any one of claims 76-97, characterized in that, The one or more measurement results include one or more of the following: Beam-level measurement results for Layer 1; Cell-level measurement results for Layer 1; Beam-level measurement results for layer 3; The results of the cell-level measurement at layer 3.
99. The network device according to any one of claims 76-98, characterized in that, The first measurement report is determined based on one or more of the following measurements: The reference signal of the serving cell of the terminal device; The reference signal of the neighboring cell of the terminal device; The reference signal of the candidate cell of the terminal device.
100. The network device according to claim 99, characterized in that, The candidate cell is a candidate cell configured by the network device for LTM handover.
101. A terminal device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or send signals so that the terminal device performs the method as described in any one of claims 1-25.
102. A network device, characterized in that, The device includes a transceiver, a memory, and a processor. The memory stores a program, and the processor invokes the program in the memory and controls the transceiver to receive or transmit signals so that the network device performs the method as described in any one of claims 26-50.
103. An apparatus, characterized in that, Includes a processor for calling a program from memory to cause the apparatus to perform the method as described in any one of claims 1-25 or 26-50.
104. A chip, characterized in that, Includes a processor for calling a program from memory, causing a device on which the chip is mounted to perform the method as described in any one of claims 1-25 or 26-50.
105. A computer-readable storage medium, characterized in that, It contains a program that causes a computer to perform the method as described in any one of claims 1-25 or 26-50.
106. A computer program product, characterized in that, Includes a program that causes a computer to perform the method as described in any one of claims 1-25 or 26-50.
107. A computer program, characterized in that, The computer program causes the computer to perform the method as described in any one of claims 1-25 or 26-50.