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

Abstract

Embodiments of the present application provide a communication method. The method comprises: a terminal device receives first information sent by a network device, the first information being used for indicating a first condition, and the first condition being related to a line-of-sight measurement result corresponding to one or more cells and / or to a line-of-sight measurement result corresponding to one or more reference signals, wherein the first condition is used for the terminal device to perform handover.

Description

A communication method, apparatus, device, chip, and storage medium Technical Field

[0001] This application relates to the field of communication technology, specifically to a communication method, apparatus, device, chip, and storage medium. Background Technology

[0002] In current cell handover processes, cell signal quality is typically assessed based on measurements such as Reference Signal Receiving Power (RSRP) and Reference Signal Receiving Quality (RSRQ). However, RSRP and RSRQ measurements cannot accurately reflect the cell's radio signal propagation conditions, potentially leading to terminal devices switching to cells with poor radio signal propagation conditions. Summary of the Invention

[0003] This application provides a communication method, apparatus, device, chip, and storage medium.

[0004] In a first aspect, embodiments of this application provide a communication method, the method comprising: a terminal device receiving first information sent by a network device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition is used by the terminal device to perform a handover.

[0005] Secondly, embodiments of this application provide a communication method, the method comprising: a network device sending first information to a terminal device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition is used by the terminal device to perform a handover.

[0006] Thirdly, embodiments of this application provide a communication device applied to a terminal device. The device includes: a first communication unit configured to receive first information sent by a network device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition is used by the terminal device to perform a handover.

[0007] Fourthly, embodiments of this application provide a communication device applied to a network device. The device includes: a second communication unit configured to send first information to a terminal device. The first information is used to indicate a first condition, which is related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition is used by the terminal device to perform a handover.

[0008] Fifthly, embodiments of this application provide a communication device, including: a memory for storing a computer program; a processor connected to the memory for calling and running the computer program from the memory to implement the method described in the first or second aspect; and a transceiver for receiving and sending information during the process of sending and receiving information with other devices.

[0009] Sixthly, embodiments of this application provide a chip. The chip includes: a processor for retrieving and running a computer program from a memory, causing a device on which the chip is installed to perform the method described in the first or second aspect; and a transceiver for receiving and sending information during the exchange of information with the device or the chip.

[0010] In a seventh aspect, embodiments of this application provide a computer-readable storage medium for storing a computer program that causes a computer to perform the methods described in the first or second aspect.

[0011] In this embodiment, the terminal device can receive first information sent by the network device. This first information can be used to indicate a first condition, which is related to line-of-sight measurement results corresponding to one or more cells, and / or to line-of-sight measurement results corresponding to one or more reference signals. Further, the first condition can be used by the terminal device to perform a handover. That is, during the handover process of the terminal device, the first condition related to the line-of-sight measurement results can be considered; or, in other words, the handover process of the terminal device needs to be performed based on the line-of-sight measurement results. Since the line-of-sight measurement results can reflect the quality of wireless signal propagation conditions, it is beneficial for the terminal device to handover to a cell with better wireless signal propagation conditions. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0013] Figure 1 is a schematic diagram of an application scenario of an embodiment of this application;

[0014] Figure 2 is a schematic diagram of a constructive interference effect provided in an embodiment of this application;

[0015] Figure 3 is a flowchart illustrating a communication method provided in an embodiment of this application;

[0016] Figure 4 is a schematic diagram of the structural composition of the communication device provided in an embodiment of this application;

[0017] Figure 5 is a schematic diagram of the structural composition of the communication device provided in an embodiment of this application;

[0018] Figure 6 is a schematic structural diagram of a communication device provided in an embodiment of this application;

[0019] Figure 7 is a schematic structural diagram of the chip according to an embodiment of this application;

[0020] Figure 8 is a schematic block diagram of a communication system provided in an embodiment of this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] Figure 1 is a schematic diagram of an application scenario of an embodiment of this application.

[0023] As shown in Figure 1, the communication system 100 may include a terminal device 110 and a network device 120. The network device 120 can communicate with the terminal device 110 via an air interface. Multi-service transmission is supported between the terminal device 110 and the network device 120.

[0024] It should be understood that the embodiments of this application are only illustrated by way of example with communication system 100, but the embodiments of this application are not limited thereto. That is to say, the technical solutions of the embodiments of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Internet of Things (IoT) system, Narrow Band Internet of Things (NB-IoT) system, enhanced Machine-Type Communications (eMTC) system, 5G communication system (also known as New Radio (NR) communication system), 6G communication system, or future communication systems, etc.

[0025] In the communication system 100 shown in Figure 1, network device 120 may be an access network device that communicates with terminal device 110. The access network device can provide communication coverage for a specific geographical area and can communicate with terminal device 110 (e.g., UE) located within that coverage area.

[0026] Network device 120 may be an evolved Node B (eNB or eNodeB) in a Long Term Evolution (LTE) system, or a Next Generation Radio Access Network (NG RAN) device, or a base station (gNB) in an NR system, or a base station in a 6G system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device 120 may be a relay station, access point, vehicle-mounted equipment, wearable device, hub, switch, bridge, router, or network equipment in a future evolved Public Land Mobile Network (PLMN), etc.

[0027] Terminal device 110 can be any terminal device, including but not limited to terminal devices that are connected to network device 120 or other terminal devices via wired or wireless connections.

[0028] For example, the terminal device 110 can refer to an access terminal, user equipment (UE), user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The access terminal can be a cellular phone, cordless phone, Session Initiation Protocol (SIP) phone, IoT device, satellite handheld terminal, Wireless Local Loop (WLL) station, Personal Digital Assistant (PDA), handheld device with wireless communication capabilities, computing device or other processing device connected to a wireless modem, in-vehicle device, wearable device, terminal device in a 5G network, terminal device in a 6G network, or terminal device in a future evolved network, etc.

[0029] Terminal device 110 can be used for device-to-device (D2D) communication.

[0030] The communication system 100 may further include a core network device 130 that communicates with the network device 120. This core network device 130 may be a 5G core network (5G Core, 5GC) device, such as an Access and Mobility Management Function (AMF), an Authentication Server Function (AUSF), a User Plane Function (UPF), or a Session Management Function (SMF). In some embodiments, the core network device 130 may also be an Evolved Packet Core (EPC) device for an LTE network, such as a Session Management Function + Core Packet Gateway (SMF+PGW-C) device. It should be understood that SMF+PGW-C can simultaneously implement the functions of both SMF and PGW-C. During network evolution, the aforementioned core network device may also be called by other names, or new network entities may be formed by dividing the core network functions; this embodiment does not limit this.

[0031] The various functional units in the communication system 100 can also establish connections through interfaces to achieve communication.

[0032] For example, terminal devices establish air interface connections with access network devices through the NR interface for transmitting user plane data and control plane signaling; terminal devices can establish control plane signaling connections with the AMF through the N1 interface; access network devices, such as next-generation radio access base stations (gNBs), can establish user plane data connections with the UPF through the NG-U interface (i.e., the N3 interface); access network devices can establish control plane signaling connections with the AMF through the NG-C interface (i.e., the N2 interface); the UPF can establish control plane signaling connections with the SMF through the N4 interface; the UPF can interact with the data network for user plane data through the N6 interface; the AMF can establish control plane signaling connections with the SMF through the N11 interface; and the SMF can establish control plane signaling connections with the PCF through the N7 interface.

[0033] Figure 1 exemplarily illustrates a network device, a core network device, and two terminal devices. Optionally, the 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.

[0034] It should be noted that Figure 1 is merely an example illustrating the system to which this application applies. Of course, the method shown in the embodiments of this application can also be applied to other systems. Furthermore, the terms "system" and "network" are often used interchangeably in this document. The term "and / or" in this document merely describes 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. It should also be understood that "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a related relationship. For example, A instructing B can mean that A directly instructs B, for example, B can be obtained through A; it can also mean that A indirectly instructs B, for example, A instructs C, B can be obtained through C; or it can mean that there is a related relationship between A and B. It should also be understood that "correspondence" mentioned in the embodiments of this application can indicate a direct or indirect correspondence between two things, or an related relationship between two things, or a relationship of instruction and being instructed, configuration and being configured, etc. It should also be understood that the "predefined" or "predefined rules" mentioned in the embodiments of this application 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), and this application does not limit the specific implementation method. For example, predefined can refer to those defined in a protocol. It should also be understood that in the embodiments of this application, the "protocol" can refer to standard protocols in the field of communication, such as LTE protocol, NR protocol, and related protocols applied to future communication systems, and this application does not limit this.

[0035] To facilitate understanding of the technical solutions of the embodiments of this application, the relevant technologies of the embodiments of this application are described below. The following relevant technologies are optional solutions and can be combined with the technical solutions of the embodiments of this application in any way, and they all fall within the protection scope of the embodiments of this application.

[0036] 1. Key points for 5G transition

[0037] Measurement configuration is provided via dedicated signaling (such as RRCReconfiguration). RRCReconfiguration includes at least three measurement types: intra-frequency measurement, inter-frequency measurement, and inter-system (Inter-RAT) measurement.

[0038] 1) The measurement configuration consists of the following parts:

[0039] Measurement objects: Indicating frequency domain / time domain location and subcarrier spacing.

[0040] Report configuration: The report configuration defines the reporting standards, which are divided into event-triggered reports, periodic reports, Cell Global Identifier (CGI) CGI reports, or System Frame Number and Frame Timing Difference (SFTD) reports.

[0041] Measurement ID: A list of measurement IDs, where each measurement ID associates a measurement object with a report configuration. In some scenarios, multiple measurement objects can be mapped to the same report configuration, and vice versa.

[0042] Measurement Configuration: Defines the measurement L3 filter configuration for measurement event evaluation and related reporting, as well as periodic reporting of the measurement.

[0043] 2) The report configuration includes the following parameters:

[0044] Reporting Standard: This standard is used to trigger the UE to send a measurement report. For example, it can be triggered based on an event or periodically.

[0045] Reference signal type: Synchronization Signal Block (SSB) or Channel State Information Reference Signal (CSI-RS).

[0046] Report format: Used to configure the measurements (such as RSRP) and other relevant information that the UE includes in the measurement report for each cell and each beam, such as the maximum number of cells to be reported and the maximum number of beams per cell.

[0047] For event-triggered measurements, parameters describing the event are included, such as event ID, threshold setting offset, reference signal type (rsType), and reporting quantity (RSRP, RSRQ, SINR). If beam measurement results need to be reported, the maximum number of non-serving cells included in the measurement report is also included.

[0048] 3) Purpose of the measurement report: For handover in the RRC_Connected state, the purpose is to let the network know that the current serving cell is no longer suitable for providing services to the UE, and the network needs to select a suitable neighboring cell to ensure service continuity.

[0049] The criteria for assessing whether neighboring cells are suitable for providing services to the UE are:

[0050] Neighboring cells should be close to the UE;

[0051] There is a line-of-sight (LOS) distance between neighboring cells and the UE.

[0052] 2. LOS Indication in 5G NR

[0053] Based on the requirements of RAN1, LOS measurement was introduced in 5G NR Release 17. LOS indication can be used to indicate the possibility of a LOS signal propagation path existing between the source and receiver. The indication method is as follows:

[0054] Soft indication: This indicates the probability (probability estimate) of the existence of a LOS propagation path between the transmitter and receiver. For example, a value of "0" indicates a non-LOS (Non-line-of-sight, NLOS) propagation path between the transmitter and receiver, while values ​​from "1" to "10" represent the probability estimate of the existence of a LOS propagation path. For another example, with a scaling factor of 0.1, the probability of a LOS propagation path between the transmitter and receiver can be represented by values ​​between 0 and 1 (in steps of 0.1).

[0055] Hard indication: This indicates whether the propagation path between the transmitter and receiver is estimated to be a LOS propagation path (true) or an NLOS propagation path (false). For example, a value of 1 indicates that the propagation path between the transmitter and receiver is a LOS propagation path, and a value of 0 indicates that the propagation path between the transmitter and receiver is an NLOS propagation path.

[0056] The basic idea of ​​LOS indication is that the UE indicates to the gNB the possibility of a LOS path between the UE and the Transmitter Receiver Point (TRP) that sends the Downlink Positioning Reference Signal (DL-PRS).

[0057] ASN.1 code format: [0,1] soft indicator; or, 0,1 hard indicator.

[0058] For example, the value of the LOS indication can be derived based on the channel estimation results (RAN1 range).

[0059] 3. Reasons for considering LOS indication in 6G

[0060] 1) The LOS path between the UE and gNB implies better radio conditions.

[0061] 2) NLOS path propagation can have negative effects, such as inter-symbol interference and frequency-selective fading.

[0062] 3) Although equalizers and orthogonal frequency division multiplexing (OFDM) waveforms with multiple narrowband carriers are used to overcome the effects of NLOS paths, we are still uncertain about the 6G system architecture and waveforms at this stage.

[0063] 4) Blockage caused by NLOS may not be significantly reflected in the measured RSRP and RSRQ, especially in environments with abundant NLOS paths, and may result in constructive interference between multipath signals. Sometimes, due to constructive interference effects, the measured signal level in environments with abundant NLOS paths may be higher than expected.

[0064] Constructive interference: When waves arrive at the same location at the same time, their amplitudes are directly added together. Consider two waves with the same frequency and propagating in the same direction: if these two waves are added point by point, a new wave that is very similar to the original wave will be obtained, but with a larger amplitude, as shown in Figure 2. This situation, where the amplitude of the synthesized wave is greater than either of the original two waves, is called constructive interference. Constructive interference occurs when the peaks of the waves are aligned. This phenomenon is usually described as the waves being "in-phase."

[0065] Similarly, in 5G positioning, another definition for the signal level measurement result of the first path is as follows:

[0066] nr-DL-PRS-FirstPathRSRP-Result

[0067] This field indicates the NR downlink positioning reference signal received path power (DL PRS-RSRPP) of the first path detected in time, as defined in TS 38.215

[0036] . The mapping relationship of the measured quantities is defined in TS 38.133

[0046] .

[0068] Therefore, the LOS indication can reflect the propagation conditions of wireless signals. If the first detected path is not a LOS path, or if the LOS signal is severely attenuated, the measurement result may also be very low.

[0069] 4. Method for deriving cell quality based on beam measurement results

[0070] 1) Measurement of a single beam

[0071] SSB beam: The UE measures the synchronization signal block (SSB) beam transmitted by the gNodeB. By measuring each beam, the following measurement results can be obtained:

[0072] Synchronization signal-reference signal received power (SS-RSRP);

[0073] Synchronization signal-reference signal reception quality (SS-RSRQ);

[0074] Synchronization signal - signal-to-interference-plus-noise ratio (SS-SINR).

[0075] 2) Configuration parameters

[0076] The network configures the UE via RRC signaling to determine how to aggregate beam measurements. Key parameters include:

[0077] Threshold: Used to filter out weak beams (e.g., absThreshSS-BlocksConsolidation).

[0078] Number of beams to be averaged: maxNrofRS-IndexesToAverage (e.g., the first 2 or 8 beams).

[0079] Averaging methods: For quantities such as RSRP / SINR, averaging is performed using either a linear (power-based) or logarithmic (dB-based) method.

[0080] 3) Steps for deriving community quality

[0081] a. Filtered beam

[0082] Filter out beams with SS-RSRP below a configured threshold. For example, filter beams with SS-RSRP < -100dBm.

[0083] b. Select the first N beams

[0084] The effective beams are sorted according to the measured values ​​(such as SS-RSRP).

[0085] Select the N strongest beams (configured by maxNrofRS-IndexesToAverage).

[0086] c. Average of measured values

[0087] For RSRP / RSRQ:

[0088] First, the measurements for each beam are converted to a linear scale (e.g., SS-RSRP is converted from dBm to mW).

[0089] Then, a linear average is performed according to formula (1):

[0090] Finally, convert the measured value (e.g., SS-RSRP) back to dBm according to formula (2):

[0091] Cell SS-RSRP (dBm) = 10·log 10 (Community quality (mW)) (2)

[0092] For SINR:

[0093] The process involves converting from dB to linear (ratio), then averaging, and finally converting back to dB.

[0094] d. Use the optimal beam (alternative)

[0095] If averaging is disabled, cell quality equals the measurement of the strongest beam.

[0096] 4) Usage Scenarios

[0097] Idle / Inactive Mode: Cell selection / reselection uses SSB-based measurements.

[0098] Connection mode: The CSI-RS beam can be used as a supplement to SSB measurements for switching decisions.

[0099] In summary, cell quality in 5G NR can be determined through the following steps:

[0100] 1) Measure the SSB beam;

[0101] 2) Filter and select the N strongest beams;

[0102] 3) Perform linear averaging based on network configuration (or select the optimal beam);

[0103] 4) Use the results for cell reselection, handover, or network optimization.

[0104] The above provides a brief explanation of the relevant technologies / terms involved in this application, which will not be repeated in the following embodiments.

[0105] In current cell handover processes, cell signal quality is typically assessed based on measurements such as RSRP and RSRQ. However, RSRP and RSRQ measurements cannot accurately reflect the cell's radio signal propagation conditions (for example, radio signal propagation congestion caused by NLOS may not be significantly reflected in RSRP and RSRQ). Therefore, current cell handover procedures may result in terminal devices switching to cells with poor radio signal propagation conditions.

[0106] In view of this, this application provides a communication method, apparatus, device, chip, and storage medium. In this method, a terminal device can receive first information sent by a network device. The first information can be used to indicate a first condition, which is related to line-of-sight measurement results corresponding to one or more cells, and / or to line-of-sight measurement results corresponding to one or more reference signals. Further, the first condition can be used by the terminal device to perform a handover.

[0107] In other words, during the handover process of terminal equipment, the first condition related to the line-of-sight measurement results can be considered; or, the handover process of terminal equipment should be carried out based on the line-of-sight measurement results. Since the line-of-sight measurement results can reflect the quality of wireless signal propagation conditions, it is beneficial for terminal equipment to hand over to cells with better wireless signal propagation conditions.

[0108] To facilitate understanding of the technical solutions of the embodiments of this application, the technical solutions of this application are described in detail below through specific embodiments. The above-mentioned related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application. The embodiments of this application include at least some of the following contents.

[0109] Figure 3 is a flowchart illustrating the communication method provided in an embodiment of this application. As shown in Figure 3, the method may include the following steps:

[0110] S301, the terminal device receives first information sent by the network device, the first information being used to indicate a first condition, the first condition being related to the line-of-sight measurement results corresponding to one or more cells, and / or related to the line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

[0111] In this embodiment, the network device can send first information to the terminal device, and correspondingly, the terminal device can receive the first information sent by the network device.

[0112] For example, the first information can be used to indicate a first condition, which is related to line-of-sight measurement results corresponding to one or more cells, and / or to line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition can be used by the terminal device to perform a handover.

[0113] According to the method of this embodiment, during the handover process of the terminal device, a first condition related to the line-of-sight measurement result can be considered; or, in other words, the handover process of the terminal device needs to be carried out based on the line-of-sight measurement result. Since the line-of-sight measurement result can reflect the quality of wireless signal propagation conditions, it is beneficial for the terminal device to switch to a cell with better wireless signal propagation conditions.

[0114] As an example, the first condition is related to the line-of-sight measurement results of one or more cells. That is, during the handover process of the terminal device, the line-of-sight measurement results of one or more cells can be considered, or in other words, the handover process of the terminal device can be carried out based on considering the line-of-sight measurement results of one or more cells.

[0115] In another example, the first condition is related to the line-of-sight measurement results corresponding to one or more reference signals. That is, during the handover process of the terminal device, the line-of-sight measurement results corresponding to one or more reference signals can be considered, or in other words, the handover process of the terminal device can be carried out based on considering the line-of-sight measurement results corresponding to one or more reference signals.

[0116] In another example, the first condition is related to the line-of-sight measurement results corresponding to one or more cells, and also to the line-of-sight measurement results corresponding to one or more reference signals. That is, during the handover process of the terminal device, the line-of-sight measurement results corresponding to one or more cells can be considered, as well as the line-of-sight measurement results corresponding to one or more reference signals.

[0117] In some embodiments, the terminal device can obtain line-of-sight measurement results corresponding to the cell and / or the reference signal by measuring the reference signal transmitted by the network device. In this case, the line-of-sight measurement results can reflect the probability that there is a line-of-sight propagation path between the terminal device and the network device transmitting the reference signal. That is, the larger the line-of-sight measurement result, the greater the probability that there is a line-of-sight propagation path between the terminal device and the network device transmitting the reference signal, and thus the better the wireless signal propagation conditions.

[0118] In one implementation, the stadia measurement result ranges from [0, 1]. In another implementation, the stadia measurement result is either 0 or 1.

[0119] It is understandable that, since line-of-sight measurement results can reflect the quality of wireless signal propagation conditions, the handover process of terminal equipment is carried out based on the line-of-sight measurement results, which is beneficial for the terminal equipment to switch to a cell with better wireless signal propagation conditions.

[0120] In some embodiments, the first condition is used to determine whether the terminal device sends a measurement report to the network device; or, the first condition is used to determine whether the terminal device performs a condition switch.

[0121] As an example, the first condition can be used to determine whether the terminal device should send a measurement report to the network device. In other words, the terminal device can determine whether to send a measurement report to the network device based on the first condition.

[0122] For example, if the first condition is met, the terminal device may send a measurement report to the network device so that the network device can make a handover decision based on the measurement report; if the first condition is not met, the terminal device does not need to send a measurement report to the network device.

[0123] In another example, the first condition can be used to determine whether the terminal device should perform a conditional handover. That is, the terminal device can determine whether to perform a conditional handover based on the first condition.

[0124] For example, if the first condition is met, the terminal device can perform a conditional handover, or in other words, if the first condition is met, the terminal device can trigger a conditional handover to the target cell; if the first condition is not met, the terminal device does not need to perform a conditional handover, or in other words, if the first condition is not met, the terminal device does not need to trigger a conditional handover to the target cell.

[0125] In some embodiments, the one or more cells (i.e., the one or more cells described in S301) may include: the serving cell and / or neighboring cells of the terminal device; the one or more reference signals (i.e., the one or more references described in S301) may include: a first reference signal of the first cell, and / or, reference signals in the set of first reference signals of the first cell. In this case, the first condition may include one or more of the following a1) to a4):

[0126] a1) The line-of-sight measurement result of the serving cell of the terminal device is less than or equal to the first threshold.

[0127] In one implementation, the first condition may include: the line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to a first threshold. That is, the handover process of the terminal device must be performed if the line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to the first threshold. For example, before the terminal device sends a measurement report or performs a conditional handover, the line-of-sight measurement result corresponding to the serving cell of the terminal device must be less than or equal to the first threshold.

[0128] a2) The line-of-sight measurement result of the neighboring cell of the terminal device is greater than or equal to the second threshold.

[0129] In one implementation, the first condition may include: the line-of-sight measurement result of the neighboring cells of the terminal device is greater than or equal to a second threshold. That is, the handover process of the terminal device must be performed if the line-of-sight measurement result of the neighboring cells of the terminal device is greater than or equal to the second threshold. For example, before the terminal device sends a measurement report or performs a conditional handover, the line-of-sight measurement result of the neighboring cells of the terminal device must be greater than or equal to the second threshold.

[0130] In some embodiments, the second threshold is related to the line-of-sight measurement result corresponding to the special cell (SpCell). For example, the second threshold = the line-of-sight measurement result corresponding to the special cell.

[0131] In some embodiments, the second threshold is also related to the first offset. For example, the second threshold = the line-of-sight measurement result corresponding to the specific cell + the first offset.

[0132] For example, a special cell can be the primary cell (PCell) of the terminal device, or it can be the primary secondary cell (PSCell) of the terminal device.

[0133] a3) The line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold.

[0134] In one implementation, the first condition may include: the line-of-sight measurement result corresponding to the first reference signal is greater than or less than a third threshold. That is, the handover process of the terminal device must be performed if the line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold. For example, before the terminal device sends a measurement report or performs a conditional handover, the line-of-sight measurement result corresponding to the first reference signal of the first cell must be greater than or less than the third threshold.

[0135] a4) The line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold.

[0136] In one implementation, the first condition may include: the line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than a fourth threshold. That is, the handover process of the terminal device must be performed only if the line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold. For example, before the terminal device sends a measurement report or performs a conditional handover, it must satisfy the condition that the line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold.

[0137] It should be noted that, in the embodiments of this application, a sight distance measurement result less than a certain threshold can also be understood as the sight distance measurement result being lower than or worse than that threshold. For example, a sight distance measurement result less than a first threshold can also be understood as the sight distance measurement result being lower than or worse than the first threshold. Similarly, a sight distance measurement result greater than a certain threshold can also be understood as the sight distance measurement result being higher than or better than that threshold. For example, a sight distance measurement result greater than a second threshold can also be understood as the sight distance measurement result being higher than or better than the second threshold.

[0138] In some embodiments, the first reference signal and / or the first set of reference signals may be configured by a network device. Thus, the terminal device may measure the first reference signal and / or the first set of reference signals configured by the network device to obtain a line-of-sight measurement result corresponding to the first reference signal and / or a line-of-sight measurement result corresponding to a reference signal in the first set of reference signals.

[0139] In some embodiments, the fourth threshold may be equal to or unequal to the third threshold.

[0140] According to the method of this embodiment, the handover process of the terminal device needs to be carried out when the line-of-sight measurement results corresponding to one or more cells and / or reference signals meet specific conditions, which is conducive to the terminal device switching to a cell with better line-of-sight measurement results (i.e., better wireless signal propagation conditions).

[0141] In some embodiments, the first condition may further include:

[0142] The signal quality measurement result of the serving cell of the terminal device is less than or equal to the fifth threshold; and / or,

[0143] The signal quality measurement result of the neighboring cell of the terminal device is greater than or equal to the sixth threshold.

[0144] In other words, the handover process for a terminal device must be performed when the signal quality measurement result of the serving cell is less than or equal to the fifth threshold, and / or the signal quality measurement result of the neighboring cell is greater than or equal to the sixth threshold. For example, before the terminal device sends a measurement report or performs a conditional handover, the signal quality measurement result of the serving cell of the terminal device must be less than or equal to the fifth threshold, and / or the signal quality measurement result of the neighboring cell of the terminal device must be greater than or equal to the sixth threshold.

[0145] For example, the signal quality measurement results can be: Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), or Signal to Interference plus Noise Ratio (SINR).

[0146] In some embodiments, the sixth threshold is related to the signal quality measurement result corresponding to a specific cell. For example, the sixth threshold = the signal quality measurement result corresponding to the specific cell.

[0147] In some embodiments, the sixth threshold is also related to the second offset. For example, the sixth threshold = signal quality measurement result corresponding to the specific cell + the second offset.

[0148] According to the method of this embodiment, the handover process of the terminal device needs to consider not only whether the line-of-sight measurement results corresponding to one or more cells and / or reference signals meet specific conditions, but also whether the signal quality measurement results corresponding to one or more cells meet specific conditions. This facilitates the terminal device's handover to a cell with better line-of-sight measurement results (i.e., better wireless signal propagation conditions) and better signal quality.

[0149] In some embodiments, the method may further include: if a first condition is met, the terminal device sends a measurement report to the network device; or, if the first condition is met, the terminal device performs a condition switch.

[0150] As an example, if a first condition is met, the terminal device may send a measurement report to the network device, and the network device may receive the measurement report sent by the terminal device. Exemplarily, this measurement report may help the network device assess whether a handover needs to be triggered, or in other words, help the network device make a handover decision.

[0151] In another example, the terminal device can perform a conditional handover if the first condition is met. Alternatively, the terminal device can trigger a conditional handover to the target cell if the first condition is met.

[0152] In some embodiments, the measurement report may include one or more of the following:

[0153] Line-of-sight measurement results for one or more cells;

[0154] Signal quality measurement results for one or more cells;

[0155] The line-of-sight measurement results corresponding to one or more reference signals.

[0156] In some embodiments, the measurement report may include one or more of the following:

[0157] The line-of-sight measurement results corresponding to the serving cell of the terminal device;

[0158] The line-of-sight measurement results corresponding to the neighboring cells of the terminal device;

[0159] Signal quality measurement results corresponding to the serving cell of the terminal device;

[0160] Signal quality measurement results of neighboring cells of the terminal device;

[0161] The line-of-sight measurement result corresponding to the first reference signal of the first cell;

[0162] The line-of-sight measurement results corresponding to the reference signals in the first reference signal set of the first cell;

[0163] For example, the first reference signal and / or the set of first reference signals may be configured by the network device.

[0164] According to the method of this embodiment, the terminal device can include the line-of-sight measurement results and / or signal quality measurement results in the measurement report sent to the network device. Thus, the network device can make a reasonable handover decision based on the line-of-sight measurement results and / or signal quality measurement results in the measurement report, so that the terminal device can switch to a cell with better line-of-sight measurement results (i.e., better wireless signal propagation conditions) and / or better signal quality as much as possible.

[0165] In some embodiments, for one of the one or more cells (i.e., the one or more cells described in S301), there is a correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell.

[0166] For example, assuming that the one or more cells include cell #1, then there is a correlation between the line-of-sight measurement result corresponding to cell #1 and the line-of-sight measurement result corresponding to the beam associated with cell #1. Exemplarily, cell #1 can be the serving cell or a neighboring cell of the terminal device.

[0167] In some embodiments, the correlation between the line-of-sight measurement result corresponding to the cell (e.g., cell #1) and the line-of-sight measurement result corresponding to the beam associated with the cell includes: the line-of-sight measurement result corresponding to the cell is the average value of the line-of-sight measurement results corresponding to all or some of the beams associated with the cell; or the line-of-sight measurement result corresponding to the cell is the maximum value among the line-of-sight measurement results corresponding to all the beams associated with the cell.

[0168] For example, the relationship between the line-of-sight measurement result corresponding to a cell and the line-of-sight measurement results corresponding to the beams associated with that cell is as follows: the line-of-sight measurement result corresponding to a cell is the average (e.g., a weighted average or a linear average) of the line-of-sight measurement results corresponding to all beams associated with that cell. In other words, the line-of-sight measurement result corresponding to that cell can be obtained by averaging (e.g., using a weighted average or a linear average) the line-of-sight measurement results corresponding to all beams associated with that cell.

[0169] Taking cell #1 as an example, the line-of-sight measurement result corresponding to cell #1 can be the average of the line-of-sight measurement results corresponding to all beams associated with cell #1 (such as a weighted average or a linear average). That is, by averaging (such as a weighted average or a linear average) the line-of-sight measurement results corresponding to all beams associated with cell #1, the line-of-sight measurement result corresponding to cell #1 can be obtained.

[0170] In another example, the relationship between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beams associated with the cell is as follows: the line-of-sight measurement result corresponding to the cell is the average of the line-of-sight measurement results corresponding to the partial beams associated with the cell. That is, by averaging (such as weighted average or linear average) the line-of-sight measurement results corresponding to the partial beams associated with the cell, the line-of-sight measurement result corresponding to the cell can be obtained.

[0171] Taking cell #1 as an example, the line-of-sight measurement result corresponding to cell #1 can be the average value (such as a weighted average or a linear average) of the line-of-sight measurement results corresponding to the partial beams associated with cell #1. That is, by averaging (such as a weighted average or a linear average) the line-of-sight measurement results corresponding to the partial beams associated with cell #1, the line-of-sight measurement result corresponding to cell #1 can be obtained.

[0172] In one implementation, the portion of the beam may include beams whose line-of-sight measurements are greater than or equal to a seventh threshold. Exemplarily, the seventh threshold may be configured by the network device.

[0173] In other words, firstly, beams whose line-of-sight measurement results are less than the seventh threshold can be excluded from all beams associated with the cell. Then, the average value (such as a weighted average or linear average) of the line-of-sight measurement results corresponding to the remaining beams can be calculated. This average value can be used as the line-of-sight measurement result corresponding to the cell.

[0174] Taking cell #1 as an example, firstly, beams whose line-of-sight measurement results are less than the seventh threshold can be excluded from all beams associated with cell #1. Then, the average value (such as weighted average or linear average) of the line-of-sight measurement results corresponding to the remaining beams can be calculated. This average value can be used as the line-of-sight measurement result corresponding to cell #1.

[0175] In another example, the relationship between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is as follows: the line-of-sight measurement result corresponding to the cell is the maximum value among all line-of-sight measurement results corresponding to all beams associated with the cell. That is, the line-of-sight measurement result corresponding to the beam with the best line-of-sight measurement result associated with the cell can be used as the line-of-sight measurement result corresponding to the cell.

[0176] Taking cell #1 as an example, the line-of-sight measurement result for cell #1 can be the maximum value among all line-of-sight measurement results associated with cell #1. For example, assuming that the beam with the largest line-of-sight measurement result among all beams associated with cell #1 is beam #2, then the line-of-sight measurement result corresponding to beam #2 can be used as the line-of-sight measurement result for cell #1.

[0177] In some embodiments, the relationship between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is predefined, preconfigured, or configured by the network device.

[0178] For example, this association is predefined or preconfigured. Thus, the terminal device can determine how to determine the line-of-sight measurement result corresponding to the cell based on the line-of-sight measurement result corresponding to the beam associated with that cell, according to the predefined or preconfigured association.

[0179] For example, suppose the pre-configured or pre-defined association is such that the line-of-sight measurement result for a cell is the average of the line-of-sight measurement results for all beams associated with that cell. Then, the terminal device can obtain the line-of-sight measurement result for that cell by averaging the line-of-sight measurement results for all beams associated with that cell.

[0180] In another example, this association is configured by a network device. For instance, the network device can configure this association to the terminal device via broadcast or unicast. In this way, the terminal device can, based on the association configured by the network device, know how to determine the line-of-sight measurement result corresponding to the cell based on the line-of-sight measurement result corresponding to the beam associated with that cell.

[0181] For example, suppose the network device is configured with the following association: the line-of-sight measurement result for a cell is the average of the line-of-sight measurement results for all beams associated with that cell. Then, the terminal device can obtain the line-of-sight measurement result for that cell by averaging the line-of-sight measurement results for all beams associated with that cell.

[0182] In some scenarios, the beam associated with a cell can also be understood as the beam configured for that cell.

[0183] According to the method of this embodiment, the terminal device can obtain the correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell. Then, the terminal device can deduce the line-of-sight measurement result corresponding to the cell based on the line-of-sight measurement result corresponding to the beam associated with the cell according to the correlation.

[0184] In some embodiments, the line-of-sight measurement results corresponding to the one or more cells (i.e., the one or more cells described in S301) and / or the signal quality measurement results corresponding to the one or more cells can be obtained by measuring reference signals in a second set of reference signals; wherein the second set of reference signals is configured by a network device.

[0185] For example, the network device can configure a second reference signal set to the terminal device via broadcast or unicast, so that the terminal device can obtain the line-of-sight measurement result and / or the signal quality measurement result corresponding to the one or more cells by measuring the reference signals in the second reference signal set.

[0186] In some embodiments, the terminal device can obtain the line-of-sight measurement result corresponding to the beam associated with the one or more cells by measuring the reference signals in the second set of reference signals. Then, the terminal device can deduce the line-of-sight measurement result corresponding to the one or more cells based on the line-of-sight measurement result corresponding to the beam associated with the one or more cells.

[0187] The communication method provided in the embodiments of this application will be described in detail below with reference to specific application scenarios.

[0188] In some scenarios, the method of this application embodiment can be applied to scenarios where terminal devices perform traditional handover. In this scenario, the network device can carry an indication information in the report configuration parameters to indicate a first condition to the terminal device. Accordingly, the terminal device can obtain the first condition from the report configuration parameters. Further, if the first condition is met, the terminal device can send a measurement report to the network device so that the network device can make a handover decision based on the measurement report.

[0189] In some scenarios, the method of this application embodiment can be applied to scenarios where a terminal device performs a conditional handover. In this scenario, the network device can configure handover execution conditions for the terminal device. The handover execution conditions may include a first condition, which can be used to trigger the terminal device to perform a conditional handover (CHO). Further, if the first condition is met, the terminal device can initiate a CHO to the target cell.

[0190] In some embodiments, the first condition may include an event related to the LOS measurement result to trigger the terminal device to send a measurement report or to trigger the terminal device to execute a CHO. In some scenarios, the aforementioned event related to the LOS measurement result may also be referred to as the LOS measurement result standard.

[0191] For example, in the first condition, the event related to the LOS measurement result (or LOS measurement result criterion) may include one or more of the following events #1 to #4.

[0192] Event #1 (e.g., Event A2): The LOS measurement result of the serving cell is less than or equal to the first threshold.

[0193] Event #2 (e.g., Event A3): The LOS measurement result of the neighboring cell is greater than or equal to the second threshold.

[0194] Event #3: The LOS measurement result of the first reference signal of the first cell is less than or greater than the third threshold.

[0195] Event #4: The LOS measurement results of the reference signals in the first reference signal set of the first cell are all greater than or less than the fourth threshold.

[0196] In one implementation, the second threshold is related to the LOS measurement result of SpCell. For example, the second threshold = the LOS measurement result of SpCell.

[0197] In one implementation, the second threshold is related to the LOS measurement result of SpCell and the first offset. For example, the second threshold = the LOS measurement result of SpCell + the first offset.

[0198] In some embodiments, the first condition may include events related to the LOS measurement result, and may also include conventional events.

[0199] For example, the above event #1 (such as Event A2) can be replaced with: the signal quality (such as RSRP) of the serving cell is less than or equal to the fifth threshold, and the LOS measurement result of the serving cell is less than or equal to the first threshold; the above event #2 (such as Event A3) can be replaced with: the signal quality measurement result (such as RSRP) of the neighboring cell is greater than or equal to the sixth threshold, and the LOS measurement result of the neighboring cell is greater than or equal to the second threshold.

[0200] In one implementation, the sixth threshold is related to SpCell's signal quality measurement results (such as RSRP). For example, the sixth threshold = SpCell's RSRP.

[0201] In one implementation, the sixth threshold is related to the signal quality measurement result of SpCell (such as RSRP) and the second offset. For example, the sixth threshold = SpCell's RSRP + the second offset.

[0202] In some embodiments, the terminal device may include LOS measurement results in the measurement report of the serving cell and / or neighboring cells to help network devices make better handover decisions.

[0203] As one implementation method, the terminal device can add a LOS measurement result indication to the MeasResults IE of the RRC measurement report message. One possible indication method is as follows:

[0204] In some embodiments, the LOS measurement results of the cell can be derived based on the LOS measurement results of the beam.

[0205] For example, a method for deriving cell LOS measurement results based on beam LOS measurement results may include one or more of the following methods 1 to 3.

[0206] Method 1: For a given cell, the LOS measurement results of all configured beams in the cell can be linearly averaged or weighted averaged, and then the result of the linear average or weighted average can be used as the LOS measurement result of the cell.

[0207] Method 2: For a given cell, first exclude all configured beams in the cell whose LOS measurement results are lower than the configured threshold (e.g., LOS measurement results < 0.3). Then, perform a linear average or weighted average on the LOS measurement results of the remaining beams. The result of this linear average or weighted average can then be used as the LOS measurement result of the cell.

[0208] Method 3: For a given cell, the LOS measurement result of the beam with the best LOS measurement result among all configured beams in that cell can be used as the LOS measurement result of that cell.

[0209] In some embodiments, the network device may transmit a reference signal configuration to the terminal device via broadcast or unicast. Accordingly, the terminal device may acquire the reference signal configuration and then measure the reference signal configured in the reference signal configuration.

[0210] In some embodiments, the network device may configure a method for deriving the LOS measurement results of a cell to the terminal device via broadcast or unicast (such as method 1 / method 2 / method 3 described above), thereby enabling the terminal device to determine the method used to derive the LOS measurement results of the cell based on the configuration of the network device.

[0211] In some embodiments, for method 2 described above, the network device may also configure a threshold for the LOS measurement result (corresponding to the aforementioned seventh threshold) to the terminal device to exclude beams whose LOS measurement result is lower than the threshold.

[0212] The method according to this embodiment affects the existing handover process in at least the following two aspects:

[0213] 1) The criteria (i.e., the first condition) for triggering a measurement report or CHO execution should take into account the LOS measurement results.

[0214] 2) For traditional handover processes, the measurement report needs to reflect the line-of-sight measurement results of the candidate cells.

[0215] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solutions of this application, and these simple modifications all fall within the protection scope of this application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. Furthermore, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be considered as the content disclosed in this application. Moreover, without conflict, the various embodiments and / or the technical features in the various embodiments described in this application can be arbitrarily combined with the prior art, and the resulting technical solutions should also fall within the protection scope of this application.

[0216] It should also be understood that in the various method embodiments of this application, the sequence number of each process 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. Furthermore, in the embodiments of this application, the terms "downlink," "uplink," and "sidelink" are used to indicate the transmission direction of signals or data. "Downlink" indicates that the transmission direction of signals or data is a first direction from the site to the user equipment in the cell; "uplink" indicates that the transmission direction of signals or data is a second direction from the user equipment in the cell to the site; and "sidelink" indicates that the transmission direction of signals or data is a third direction from user equipment 1 to user equipment 2. For example, "downlink signal" indicates that the transmission direction of the signal is the first direction. Additionally, in the embodiments of this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. Specifically, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0217] Based on the foregoing embodiments, this application provides corresponding communication devices.

[0218] Figure 4 is a schematic diagram of the structure of a communication device provided in an embodiment of this application, applied to a terminal device. As shown in Figure 4, the communication device 400 includes:

[0219] The first communication unit 410 is configured to receive first information sent by a network device. The first information is used to indicate a first condition, which is related to the line-of-sight measurement results corresponding to one or more cells, and / or to the line-of-sight measurement results corresponding to one or more reference signals; wherein the first condition is used by the terminal device to perform a handover.

[0220] In some embodiments, the first condition is used to determine whether the terminal device sends a measurement report to the network device; or, the first condition is used to determine whether the terminal device performs a condition switch.

[0221] In some embodiments, the one or more cells include: the serving cell and / or neighboring cells of the terminal device; the one or more reference signals include: a first reference signal of the first cell, and / or, reference signals in the set of first reference signals of the first cell; the first condition includes one or more of the following:

[0222] The line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to the first threshold.

[0223] The line-of-sight measurement result of the neighboring cell of the terminal device is greater than or equal to the second threshold.

[0224] The line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold;

[0225] The line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold;

[0226] The first reference signal and / or the first set of reference signals is configured by the network device.

[0227] In some embodiments, the second threshold is related to the line-of-sight measurement result corresponding to a specific cell.

[0228] In some embodiments, the second threshold is also related to the first offset.

[0229] In some embodiments, the first condition further includes:

[0230] The signal quality measurement result corresponding to the serving cell of the terminal device is less than or equal to the fifth threshold; and / or,

[0231] The signal quality measurement result of the neighboring cell of the terminal device is greater than or equal to the sixth threshold.

[0232] In some embodiments, the sixth threshold is related to the signal quality measurement results corresponding to a specific cell.

[0233] In some embodiments, the sixth threshold is also related to the second offset.

[0234] In some embodiments, the first communication unit 410 is further configured to: send a measurement report to the network device when the first condition is met; or, perform a condition switch when the first condition is met.

[0235] In some embodiments, the measurement report includes one or more of the following:

[0236] The line-of-sight measurement results corresponding to the serving cell of the terminal device;

[0237] The line-of-sight measurement results corresponding to the neighboring cells of the terminal device;

[0238] The signal quality measurement results corresponding to the serving cell of the terminal device;

[0239] The signal quality measurement results corresponding to the neighboring cells of the terminal device;

[0240] The line-of-sight measurement result corresponding to the first reference signal of the first cell;

[0241] The line-of-sight measurement results corresponding to the reference signals in the first reference signal set of the first cell;

[0242] The first reference signal and / or the first set of reference signals is configured by the network device.

[0243] In some embodiments, for one of the one or more cells, there is a correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell.

[0244] In some embodiments, the correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell includes:

[0245] The line-of-sight measurement result corresponding to the cell is the average of the line-of-sight measurement results corresponding to all or part of the beams associated with the cell; or,

[0246] The line-of-sight measurement result corresponding to the cell is the maximum value among the line-of-sight measurement results corresponding to all beams associated with the cell.

[0247] In some embodiments, the partial beams include: beams whose line-of-sight measurement results are greater than or equal to a seventh threshold; the seventh threshold is configured by the network device.

[0248] In some embodiments, the correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is predefined, preconfigured, or configured by the network device.

[0249] In some embodiments, the line-of-sight measurement results corresponding to the one or more cells, and / or the signal quality measurement results corresponding to the one or more cells, are obtained by measuring reference signals in a second reference signal set; wherein the second reference signal set is configured by the network device.

[0250] Figure 5 is a schematic diagram of the structure of a communication device provided in an embodiment of this application, applied to a network device. As shown in Figure 5, the communication device 500 includes:

[0251] The second communication unit 510 is configured to send first information to a terminal device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

[0252] In some embodiments, the first condition is used to determine whether the terminal device sends a measurement report to the network device; or, the first condition is used to determine whether the terminal device performs a condition switch.

[0253] In some embodiments, the one or more cells include: the serving cell and / or neighboring cells of the terminal device; the one or more reference signals include: a first reference signal of the first cell, and / or, reference signals in the set of first reference signals of the first cell; the first condition includes one or more of the following:

[0254] The line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to the first threshold.

[0255] The line-of-sight measurement result of the neighboring cell of the terminal device is greater than or equal to the second threshold.

[0256] The line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold;

[0257] The line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold;

[0258] The first reference signal and / or the first set of reference signals is configured by the network device.

[0259] In some embodiments, the second threshold is related to the line-of-sight measurement result corresponding to a specific cell.

[0260] In some embodiments, the second threshold is also related to the first offset.

[0261] In some embodiments, the first condition further includes:

[0262] The signal quality measurement result corresponding to the serving cell of the terminal device is less than or equal to the fifth threshold; and / or,

[0263] The signal quality measurement result of the neighboring cell of the terminal device is greater than or equal to the sixth threshold.

[0264] In some embodiments, the sixth threshold is related to the signal quality measurement results corresponding to a specific cell.

[0265] In some embodiments, the sixth threshold is also related to the second offset.

[0266] In some embodiments, the second communication unit 510 is further configured to receive a measurement report sent by the terminal device.

[0267] In some embodiments, the measurement report includes one or more of the following:

[0268] The line-of-sight measurement results corresponding to the serving cell of the terminal device;

[0269] The line-of-sight measurement results corresponding to the neighboring cells of the terminal device;

[0270] The signal quality measurement results corresponding to the serving cell of the terminal device;

[0271] The signal quality measurement results corresponding to the neighboring cells of the terminal device;

[0272] The line-of-sight measurement result corresponding to the first reference signal of the first cell;

[0273] The line-of-sight measurement results corresponding to the reference signals in the first reference signal set of the first cell;

[0274] The first reference signal and / or the first set of reference signals is configured by the network device.

[0275] In some embodiments, for one of the one or more cells, there is a correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell.

[0276] In some embodiments, the correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell includes:

[0277] The line-of-sight measurement result corresponding to the cell is the average of the line-of-sight measurement results corresponding to all or part of the beams associated with the cell; or,

[0278] The line-of-sight measurement result corresponding to the cell is the maximum value among the line-of-sight measurement results corresponding to all beams associated with the cell.

[0279] In some embodiments, the partial beams include: beams whose line-of-sight measurement results are greater than or equal to a seventh threshold; the seventh threshold is configured by the network device.

[0280] In some embodiments, the correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is predefined, preconfigured, or configured by the network device.

[0281] In some embodiments, the line-of-sight measurement results corresponding to the one or more cells, and / or the signal quality measurement results corresponding to the one or more cells, are obtained by measuring reference signals in a second reference signal set; wherein the second reference signal set is configured by the network device.

[0282] Those skilled in the art should understand that the description of the communication device in the embodiments of this application can be understood with reference to the description of the communication method in the embodiments of this application.

[0283] Figure 6 is a schematic structural diagram of a communication device provided in an embodiment of this application. This communication device can be a terminal device or a network device. The communication device 600 shown in Figure 6 includes a processor 610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0284] Optionally, as shown in FIG6, the communication device 600 may further include a memory 620. The processor 610 may retrieve and run computer programs from the memory 620 to implement the methods described in the embodiments of this application.

[0285] The memory 620 can be a separate device independent of the processor 610, or it can be integrated into the processor 610.

[0286] Optionally, as shown in FIG6, the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0287] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0288] Optionally, the communication device 600 may specifically be a terminal device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0289] Optionally, the communication device 600 may specifically be a network device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0290] Figure 7 is a schematic structural diagram of a chip according to an embodiment of this application. The chip 700 shown in Figure 7 includes a processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0291] Optionally, as shown in FIG7, chip 700 may further include memory 720. Processor 710 can retrieve and run computer programs from memory 720 to implement the methods in the embodiments of this application.

[0292] The memory 720 can be a separate device independent of the processor 710, or it can be integrated into the processor 710.

[0293] Optionally, the chip 700 may also include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips; specifically, it can acquire information or data sent by other devices or chips.

[0294] Optionally, the chip 700 may also include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0295] Optionally, the chip can be applied to the terminal device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0296] Optionally, the chip can be applied to the network device in the embodiments of this application, and the chip can implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0297] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0298] This application also provides a computer storage medium storing one or more programs, which can be executed by one or more processors to implement the methods in this application.

[0299] Figure 8 is a schematic block diagram of a communication system provided in an embodiment of this application. As shown in Figure 8, the communication system 800 includes a terminal device 810 and a network device 820.

[0300] The terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For the sake of brevity, they will not be described in detail here.

[0301] It should be understood that the processor in the embodiments of this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0302] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0303] It should be understood that the above-described memory is exemplary and not a limiting description. For example, the memory in the embodiments of this application may also be static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DR RAM), etc. That is to say, the memory in the embodiments of this application is intended to include, but is not limited to, these and any other suitable types of memory.

[0304] This application also provides a computer-readable storage medium for storing computer programs.

[0305] Optionally, the computer-readable storage medium can be applied to the terminal device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0306] Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of this application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0307] This application also provides a computer program product, including computer program instructions.

[0308] Optionally, the computer program product can be applied to the terminal device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0309] Optionally, the computer program product can be applied to the network device in the embodiments of this application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, they will not be described in detail here.

[0310] This application also provides a computer program.

[0311] Optionally, the computer program can be applied to the terminal device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0312] Optionally, the computer program can be applied to the network device in the embodiments of this application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0313] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0314] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0315] 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.

[0316] 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.

[0317] 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.

[0318] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0319] 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, the method comprising: The terminal device receives first information sent by the network device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

2. The method according to claim 1, wherein, The first condition is used to determine whether the terminal device sends a measurement report to the network device; or... The first condition is used to determine whether the terminal device should perform a condition switch.

3. The method according to claim 1 or 2, wherein, The one or more cells include: the serving cell and / or neighboring cells of the terminal device; the one or more reference signals include: a first reference signal of the first cell, and / or, reference signals in the set of first reference signals of the first cell; the first condition includes one or more of the following: The line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to the first threshold. The line-of-sight measurement result of the neighboring cell of the terminal device is greater than or equal to the second threshold. The line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold; The line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold; The first reference signal and / or the first set of reference signals is configured by the network device.

4. The method according to claim 3, wherein, The second threshold is related to the line-of-sight measurement results corresponding to the specific cell.

5. The method according to claim 4, wherein, The second threshold is also related to the first offset.

6. The method according to any one of claims 3 to 5, wherein, The first condition also includes: The signal quality measurement result corresponding to the serving cell of the terminal device is less than or equal to the fifth threshold; and / or, The signal quality measurement result of the neighboring cell of the terminal device is greater than or equal to the sixth threshold.

7. The method according to claim 6, wherein, The sixth threshold is related to the signal quality measurement results corresponding to the specific cell.

8. The method according to claim 7, wherein, The sixth threshold is also related to the second offset.

9. The method according to any one of claims 1 to 8, wherein, The method further includes: If the first condition is met, the terminal device sends a measurement report to the network device; or, If the first condition is met, the terminal device performs a condition switch.

10. The method according to claim 2 or 9, wherein, The measurement report includes one or more of the following: The line-of-sight measurement results corresponding to the serving cell of the terminal device; The line-of-sight measurement results corresponding to the neighboring cells of the terminal device; The signal quality measurement results corresponding to the serving cell of the terminal device; The signal quality measurement results corresponding to the neighboring cells of the terminal device; The line-of-sight measurement result corresponding to the first reference signal of the first cell; The line-of-sight measurement results corresponding to the reference signals in the first reference signal set of the first cell; The first reference signal and / or the first set of reference signals is configured by the network device.

11. The method according to any one of claims 1 to 10, wherein, For one of the one or more cells, there is a correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell.

12. The method according to claim 11, wherein, The correlation between the line-of-sight measurement results corresponding to the cell and the line-of-sight measurement results corresponding to the beam associated with the cell includes: The line-of-sight measurement result corresponding to the cell is the average of the line-of-sight measurement results corresponding to all or part of the beams associated with the cell; or, The line-of-sight measurement result corresponding to the cell is the maximum value among the line-of-sight measurement results corresponding to all beams associated with the cell.

13. The method according to claim 12, wherein, The portion of the beam includes: Beams whose line-of-sight measurement results are greater than or equal to a seventh threshold; the seventh threshold is configured by the network device.

14. The method according to any one of claims 11 to 13, wherein, The correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is predefined, preconfigured, or configured by the network device.

15. The method according to any one of claims 1 to 14, wherein, The line-of-sight measurement results corresponding to the one or more cells, and / or the signal quality measurement results corresponding to the one or more cells, are obtained by measuring reference signals in the second reference signal set; wherein the second reference signal set is configured by the network device.

16. A communication method, the method comprising: The network device sends first information to the terminal device, the first information indicating a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

17. The method according to claim 16, wherein, The first condition is used to determine whether the terminal device sends a measurement report to the network device; or... The first condition is used to determine whether the terminal device should perform a condition switch.

18. The method according to claim 16 or 17, wherein, The one or more cells include: the serving cell and / or neighboring cells of the terminal device; the one or more reference signals include: a first reference signal of the first cell, and / or, reference signals in the set of first reference signals of the first cell; the first condition includes one or more of the following: The line-of-sight measurement result corresponding to the serving cell of the terminal device is less than or equal to the first threshold. The line-of-sight measurement result of the neighboring cell of the terminal device is greater than or equal to the second threshold. The line-of-sight measurement result corresponding to the first reference signal is greater than or less than the third threshold; The line-of-sight measurement results corresponding to the reference signals in the first set of reference signals are all greater than or less than the fourth threshold; The first reference signal and / or the first set of reference signals is configured by the network device.

19. The method according to claim 18, wherein, The second threshold is related to the line-of-sight measurement results corresponding to the specific cell.

20. The method according to claim 19, wherein, The second threshold is also related to the first offset.

21. The method according to any one of claims 18 to 20, wherein, The first condition also includes: The signal quality measurement result corresponding to the serving cell of the terminal device is less than or equal to the fifth threshold; and / or, The signal quality measurement result of the neighboring cell of the terminal device is greater than or equal to the sixth threshold.

22. The method according to claim 21, wherein, The sixth threshold is related to the signal quality measurement results corresponding to the specific cell.

23. The method according to claim 22, wherein, The sixth threshold is also related to the second offset.

24. The method according to any one of claims 16 to 23, wherein, The method further includes: The network device receives the measurement report sent by the terminal device.

25. The method according to claim 17 or 24, wherein, The measurement report includes one or more of the following: The line-of-sight measurement results corresponding to the serving cell of the terminal device; The line-of-sight measurement results corresponding to the neighboring cells of the terminal device; The signal quality measurement results corresponding to the serving cell of the terminal device; The signal quality measurement results corresponding to the neighboring cells of the terminal device; The line-of-sight measurement result corresponding to the first reference signal of the first cell; The line-of-sight measurement results corresponding to the reference signals in the first reference signal set of the first cell; The first reference signal and / or the first set of reference signals is configured by the network device.

26. The method according to any one of claims 16 to 25, wherein, For one of the one or more cells, there is a correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell.

27. The method according to claim 26, wherein, The correlation between the line-of-sight measurement results corresponding to the cell and the line-of-sight measurement results corresponding to the beam associated with the cell includes: The line-of-sight measurement result corresponding to the cell is the average of the line-of-sight measurement results corresponding to all or part of the beams associated with the cell; or, The line-of-sight measurement result corresponding to the cell is the maximum value among the line-of-sight measurement results corresponding to all beams associated with the cell.

28. The method according to claim 27, wherein, The portion of the beam includes: Beams whose line-of-sight measurement results are greater than or equal to a seventh threshold; the seventh threshold is configured by the network device.

29. The method according to any one of claims 26 to 28, wherein, The correlation between the line-of-sight measurement result corresponding to the cell and the line-of-sight measurement result corresponding to the beam associated with the cell is predefined, preconfigured, or configured by the network device.

30. The method according to any one of claims 16 to 29, wherein, The line-of-sight measurement results corresponding to the one or more cells, and / or the signal quality measurement results corresponding to the one or more cells, are obtained by measuring reference signals in the second reference signal set; wherein the second reference signal set is configured by the network device.

31. A communication device applied to a terminal equipment, the device comprising: The first communication unit is configured to receive first information sent by a network device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

32. A communication device applied to a network equipment, the device comprising: The second communication unit is configured to send first information to the terminal device, the first information being used to indicate a first condition, the first condition being related to line-of-sight measurement results corresponding to one or more cells, and / or related to line-of-sight measurement results corresponding to one or more reference signals; wherein, the first condition is used by the terminal device to perform a handover.

33. A communication device, the communication device comprising: Memory, used to store computer programs; A processor, connected to the memory, is configured to call and run the computer program from the memory to implement the method as described in any one of claims 1 to 15, or the method as described in any one of claims 16 to 30; A transceiver is used to receive and send information when exchanging information with other devices.

34. A chip, the chip comprising: A processor for retrieving and running a computer program from memory, causing a device having the chip mounted to perform the method as claimed in any one of claims 1 to 15, or the method as claimed in any one of claims 16 to 30; A transceiver is used to receive and send information during the exchange of information with a device or chip.

35. A computer-readable storage medium for storing a computer program that causes a computer to perform the method as claimed in any one of claims 1 to 15, or the method as claimed in any one of claims 16 to 30.

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