Communication method, terminal, network device, communication apparatus, communication system, storage medium and program product

Abstract

The present disclosure relates to a communication method, a terminal, a network device, a communication device, a communication system, a storage medium and a program product. The method comprises: on the basis of an event, sending a measurement report to a network device and / or performing a handover to a candidate cell, wherein the event comprises at least one of the following: signal quality information of a serving cell and position information of the candidate cell; the signal quality information of the serving cell and time information of the candidate cell; the position information of the candidate cell; and the time information of the candidate cell and the position information of the candidate cell. In the embodiments of the present disclosure, on the basis of the event, a terminal sends the measurement report to the network device and / or performs a handover to the candidate cell, which helps the network device execute a corresponding decision on the basis of the measurement report sent by the terminal, and helps the terminal execute a handover at a suitable occasion on the basis of the event, reducing the probability of executing a handover when the signal quality of the serving cell is relatively good, and thereby improving the continuity and stability of terminal communication.

Description

Communication methods, terminals, network equipment, communication devices, communication systems, storage media and software products Technical Field

[0001] This disclosure relates to the field of communication technology, and in particular to a communication method, terminal, network equipment, communication device, communication system, storage medium, and program product. Background Technology

[0002] Cell handover refers to the process in a mobile communication network where a terminal switches from one cell to another. Cell handover ensures the continuity of communication services for the terminal. Summary of the Invention

[0003] This disclosure provides a communication method, terminal, network device, communication equipment, communication system, storage medium, and program product to improve the continuity and stability of terminal communication.

[0004] According to a first aspect of the embodiments of this disclosure, a communication method is provided, executed by a terminal, the method comprising:

[0005] Based on the event, a measurement report is sent to the network device and / or a handover to a candidate cell is performed; wherein the event includes at least one of the following:

[0006] Signal quality information of the serving cell and location information of candidate cells;

[0007] Signal quality information of the serving cell and time information of the candidate cells;

[0008] Location information of candidate cells;

[0009] The time information and location information of the candidate cells.

[0010] In this embodiment of the disclosure, the terminal sends a measurement report to the network device and / or switches to a candidate cell based on the event. This helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform a handover at an appropriate time based on the event. This reduces the probability of performing a handover when the signal quality of the serving cell is good, and improves the continuity and stability of terminal communication.

[0011] According to a second aspect of the embodiments of this disclosure, a communication method is provided, performed by a network device, the method comprising:

[0012] The receiving terminal sends a measurement report based on an event; wherein the event includes at least one of the following:

[0013] Signal quality information of the serving cell and location information of candidate cells;

[0014] Signal quality information of the serving cell and time information of the candidate cells;

[0015] Location information of candidate cells;

[0016] The time information and location information of the candidate cells.

[0017] In this embodiment of the disclosure, the network device receives a measurement report sent by the terminal based on the event, which helps the network device to make corresponding decisions based on the measurement report sent by the terminal, reduces the probability of handover when the signal quality of the serving cell is good, and improves the continuity and stability of terminal communication.

[0018] According to a third aspect of the embodiments of this disclosure, a terminal is provided, comprising:

[0019] The transceiver module and / or processing module are used to send measurement reports to network devices based on events, and the processing module is used to switch to a candidate cell based on events; wherein, the events include at least one of the following:

[0020] Signal quality information of the serving cell and location information of candidate cells;

[0021] Signal quality information of the serving cell and time information of the candidate cells;

[0022] Location information of candidate cells;

[0023] The time information and location information of the candidate cells.

[0024] According to a fourth aspect of the embodiments of this disclosure, a network device is provided, comprising:

[0025] The transceiver module is used to receive measurement reports sent by the terminal based on events; wherein the events include at least one of the following:

[0026] Signal quality information of the serving cell and location information of candidate cells;

[0027] Signal quality information of the serving cell and time information of the candidate cells;

[0028] Location information of candidate cells;

[0029] The time information and location information of the candidate cells.

[0030] According to a fifth aspect of the present disclosure, a communication device is provided for performing the communication method described in any one of the first aspects, or for performing the communication method described in any one of the second aspects.

[0031] According to a sixth aspect of the present disclosure, a communication system is provided, including a terminal and a network device, wherein the terminal is configured to implement the communication method described in any one of the first aspects, and the network device is configured to implement the communication method described in any one of the second aspects.

[0032] According to a seventh aspect of the present disclosure, a storage medium is provided that stores instructions which, when executed on a communication device, cause the communication device to perform a communication method as described in any one of the first aspects, or cause the communication device to perform a communication method as described in any one of the second aspects.

[0033] According to an eighth aspect of the present disclosure, a program product is provided, comprising at least one of a program and instructions, wherein when the program and instructions are executed by a communication device, the program implements the steps of the communication method described in any one of the first aspects, or implements the steps of the communication method described in any one of the second aspects. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0035] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0036] Figure 1b is a schematic diagram of an NTN communication provided in an embodiment of this disclosure;

[0037] Figure 1c is a schematic diagram of the architecture of an NTN communication system provided in an embodiment of this disclosure;

[0038] Figure 1d is a schematic diagram of the architecture of an NTN communication system provided in an embodiment of this disclosure;

[0039] Figure 2a is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0040] Figure 2b is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0041] Figure 3a is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0042] Figure 3b is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure;

[0043] Figure 4a is an exemplary structural diagram of the terminal proposed in an embodiment of this disclosure;

[0044] Figure 4b is an exemplary structural diagram of the network device proposed in an embodiment of this disclosure;

[0045] Figure 5a is an exemplary structural schematic diagram of the communication device proposed in an embodiment of this disclosure;

[0046] Figure 5b is an exemplary structural diagram of the chip proposed in an embodiment of this disclosure. Detailed Implementation

[0047] This disclosure provides a communication method, terminal, network device, communication equipment, communication system, storage medium, and program product to improve the continuity and stability of terminal communication.

[0048] According to a first aspect of the embodiments of this disclosure, a communication method is provided, executed by a terminal, the method comprising:

[0049] Based on the event, a measurement report is sent to the network device and / or a handover to a candidate cell is performed; wherein the event includes at least one of the following:

[0050] Signal quality information of the serving cell and location information of candidate cells;

[0051] Signal quality information of the serving cell and time information of the candidate cells;

[0052] Location information of candidate cells;

[0053] The time information and location information of the candidate cells.

[0054] In this embodiment, the terminal can send a measurement report and / or switch to the candidate cell to the network device based on the signal quality information of the serving cell and the location information of the candidate cell. This helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform the handover at an appropriate time using the signal quality information of the serving cell and the location information of the candidate cell. This reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. The terminal can also send a measurement report and / or switch to the candidate cell to the network device based on the signal quality information of the serving cell and the time information of the candidate cell. This helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform the handover at an appropriate time using the signal quality information of the serving cell and the location information of the candidate cell. By using information and candidate cell time information to perform handover at an appropriate time, the probability of the terminal handing over from the serving cell to a candidate cell when the signal quality of the serving cell is good is reduced. The terminal can send a measurement report to the network device and / or handover to the candidate cell based on the candidate cell's location information. This helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform handover at an appropriate time using the candidate cell's location information. In summary, in this embodiment of the disclosure, the terminal sending a measurement report to the network device and / or handing over to a candidate cell based on an event helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform handover at an appropriate time based on the event, reducing the probability of handover when the signal quality of the serving cell is good, and improving the continuity and stability of terminal communication.

[0055] In conjunction with some embodiments of the first aspect, in some embodiments, the serving cell is a terrestrial network (TN) cell, and the candidate cell is a non-terrestrial network (NTN) cell.

[0056] In the above embodiments, if the event includes signal quality information of the serving cell and location information of the candidate cell, it helps the network device to make corresponding network decisions based on the signal quality information of the serving cell and the location information of the candidate cell. This reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. Furthermore, since the candidate cell is an NTN cell, the location of the network device is dynamically changing, thus reducing the risk of exposing the location of the network device. If the event includes signal quality information of the serving cell and time information of the candidate cell, it helps the network device to make corresponding network decisions based on the signal quality information of the serving cell and the time information of the candidate cell. This reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good, thus reducing the risk of exposing the location of the network device. If the event includes location information of the candidate cell, it helps the network device to make corresponding network decisions based on the location information of the candidate cell. This helps the terminal to perform a handover at an appropriate time based on the location information of the candidate cell, thus reducing the risk of exposing the location of the network device. If the event includes both time information and location information of the candidate cell, it helps the network device to make corresponding network decisions based on the time information and location information of the candidate cell. This helps the terminal to perform a handover at an appropriate time based on the time information and location information of the candidate cell, thus reducing the risk of exposing the location of the network device.

[0057] In conjunction with some embodiments of the first aspect, in some embodiments, the signal quality information of the serving cell includes at least one of the following:

[0058] Reference signal receiving power (RSRP);

[0059] Reference signal receiving quality (RSRQ);

[0060] The reference signal-to-interference plus noise ratio (RS-SINR);

[0061] Signal quality threshold;

[0062] Signal quality hysteresis factor.

[0063] In the above embodiments, based on at least one of the serving cell's RSRP, RSRQ, RS-SINR, signal quality threshold, and signal quality hysteresis factor, it can be determined whether an event related to the serving cell's signal quality information is triggered: the serving cell's signal quality information and the candidate cell's location information; the serving cell's signal quality information and the candidate cell's time information.

[0064] In conjunction with some embodiments of the first aspect, in some embodiments, the location information of the candidate cell includes at least one of the following:

[0065] Reference location of candidate cells;

[0066] Reference time for reference location;

[0067] ephemeris information;

[0068] The location of the terminal;

[0069] The distance between the terminal and the reference position;

[0070] Distance threshold;

[0071] Distance hysteresis factor.

[0072] In the above embodiments, based on at least one of the following: the reference location of the candidate cell, the reference time of the reference location, ephemeris information, the location of the terminal, the distance between the terminal and the reference location, the distance threshold, and the distance hysteresis factor, it can be determined whether an event related to the location information of the candidate cell is triggered: the signal quality information of the serving cell and the location information of the candidate cell; the location information of the candidate cell; the time information of the candidate cell and the location information of the candidate cell.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the timing information of the candidate cells includes at least one of the following:

[0074] The first time period is the period during which the candidate cell provides services to the terminal;

[0075] The start time of the first time period;

[0076] The end time of the first period;

[0077] Duration of the first session;

[0078] Terminal time.

[0079] In the above embodiments, based on at least one of the first time period, the start time of the first time period, the end time of the first time period, the duration of the first time period, and the time of the terminal, it can be determined whether an event related to the time information of the candidate cell is triggered: the signal quality information of the serving cell and the time information of the candidate cell; the time information of the candidate cell and the location information of the candidate cell.

[0080] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0081] Receive configuration information sent by the network device, the configuration information including at least one of the following:

[0082] Signal quality information for the serving cell;

[0083] Location information of candidate cells;

[0084] Time information for candidate cells.

[0085] In the above embodiments, the terminal receives configuration information sent by the network device, thereby determining whether to trigger a corresponding event based on the configuration information, and sending a measurement report to the network device and / or switching to a candidate cell based on the event, thereby improving the continuity and stability of terminal communication.

[0086] In conjunction with some embodiments of the first aspect, in some embodiments, the event includes at least one of the following:

[0087] The first event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0088] The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, which is the time period during which the candidate cell provides services to the terminal;

[0089] The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold;

[0090] The fourth event is: the terminal's time is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0091] In the above embodiments, regarding the first event, the terminal sending a measurement report and / or switching to a candidate cell to the network device based on the first event can reduce the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good; regarding the second event, the terminal sending a measurement report and / or switching to a candidate cell to the network device based on the second event can reduce the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good; regarding the third event, the terminal sending a measurement report and / or switching to a candidate cell to the network device based on the third event helps the network device to make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal to perform a handover at an appropriate time based on the location information of the candidate cell; regarding the fourth event, the terminal sending a measurement report and / or switching to a candidate cell to the network device based on the fourth event helps the network device to make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal to perform a handover at an appropriate time based on the time information and location information of the candidate cell.

[0092] In conjunction with some embodiments of the first aspect, in some embodiments, the entry condition of the first event includes: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0093] And / or,

[0094] The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0095] In the above embodiments, by setting appropriate entry conditions for the first event, when the signal quality of the serving cell is poor and the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance. By having the terminal handover to the candidate cell when the signal quality of the serving cell is poor and the distance between the terminal and the candidate cell is small, it is possible to ensure that the terminal performs the handover at the appropriate time, thereby improving the success rate and efficiency of the handover.

[0096] In the above embodiments, by setting appropriate departure conditions for the first event, network devices can reduce unnecessary handover operations, avoid terminals performing handover under inappropriate circumstances, and reduce the possibility of handover failure.

[0097] In conjunction with some embodiments of the first aspect, in some embodiments, the entry conditions for the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period;

[0098] And / or,

[0099] The conditions for leaving the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0100] In the above embodiments, by setting appropriate entry conditions for the second event, when the signal quality of the serving cell is poor and the terminal's time is later than the start time of the first time period, the terminal sends a measurement report to the network device, which helps the network device to trigger corresponding decisions in a timely manner based on the measurement report and optimize network performance. By switching to the candidate cell when the signal quality of the serving cell is poor and the terminal's time is later than the start time of the first time period, it can be ensured that the terminal performs the handover at the appropriate time, thereby improving the success rate and efficiency of the handover.

[0101] In the above embodiments, by setting appropriate departure conditions for the second event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources, preventing terminals from performing handovers under inappropriate circumstances, and reducing the possibility of handover failure.

[0102] In conjunction with some embodiments of the first aspect, in some embodiments, the entry condition of the third event includes: the sum of the distance and the distance hysteresis factor is less than or equal to a distance threshold;

[0103] And / or,

[0104] The conditions for leaving the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0105] In the above embodiments, by setting appropriate entry conditions for the third event, when the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance. By having the terminal handover to the candidate cell when the distance between the terminal and the candidate cell is small, it can be ensured that the terminal performs the handover at the appropriate time, thereby improving the success rate and efficiency of the handover.

[0106] In the above embodiments, by setting appropriate departure conditions for the third event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources, preventing terminals from performing handovers under inappropriate circumstances, and reducing the possibility of handover failure.

[0107] In conjunction with some embodiments of the first aspect, in some embodiments, the entry conditions of the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0108] And / or,

[0109] The conditions for leaving the fourth event include: the time of the terminal is later than the end time of the first period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0110] In the above embodiments, by setting appropriate entry conditions for the fourth event, when the terminal's time is later than the start time of the first time period and the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device. This helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance. It can ensure that the terminal performs handover at the appropriate time, thereby improving the success rate and efficiency of handover.

[0111] In the above embodiments, by setting appropriate departure conditions for the fourth event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources, preventing terminals from performing handovers under inappropriate circumstances, and reducing the possibility of handover failure.

[0112] According to a second aspect of the embodiments of this disclosure, a communication method is provided, performed by a network device, the method comprising:

[0113] The receiving terminal sends a measurement report based on an event; wherein the event includes at least one of the following:

[0114] Signal quality information of the serving cell and location information of candidate cells;

[0115] Signal quality information of the serving cell and time information of the candidate cells;

[0116] Location information of candidate cells;

[0117] The time information and location information of the candidate cells.

[0118] In this embodiment, the network device can receive measurement reports sent by the terminal based on the signal quality information of the serving cell and the location information of the candidate cell. This helps the network device make corresponding decisions based on the measurement reports sent by the terminal, reducing the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. The network device can also receive measurement reports sent by the terminal based on the signal quality information of the serving cell and the time information of the candidate cell. This further reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. Furthermore, the network device can receive measurement reports sent by the terminal based on the location information of the candidate cell. Finally, the network device can receive measurement reports sent by the terminal based on the time information and location information of the candidate cell. In summary, in this embodiment, the network device receiving measurement reports sent by the terminal based on events helps the network device make corresponding decisions based on these reports, reducing the probability of handover when the signal quality of the serving cell is good, and improving the continuity and stability of terminal communication.

[0119] In conjunction with some embodiments of the second aspect, in some embodiments, the serving cell is a TN cell and the candidate cell is an NTN cell.

[0120] In the above embodiments, if the event includes signal quality information of the serving cell and location information of the candidate cell, it helps the network device to make corresponding network decisions based on the signal quality information of the serving cell and the location information of the candidate cell. This reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. Furthermore, since the candidate cell is an NTN cell, the location of the network device is dynamically changing, thus reducing the risk of exposing the network device's location. If the event includes signal quality information of the serving cell and time information of the candidate cell, it helps the network device to make corresponding network decisions based on the signal quality information of the serving cell and the time information of the candidate cell. This reduces the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good. Furthermore, since the candidate cell is an NTN cell, the location of the network device is dynamically changing, thus reducing the risk of exposing the network device's location. If the event includes location information of the candidate cell, it helps the network device to make corresponding network decisions based on the location information of the candidate cell, thus reducing the risk of exposing the network device's location. If the event includes both time information and location information of the candidate cell, it helps the network device to make corresponding network decisions based on the time information and location information of the candidate cell, thus reducing the risk of exposing the network device's location.

[0121] In conjunction with some embodiments of the second aspect, in some embodiments, the signal quality information of the serving cell includes at least one of the following:

[0122] RSRP;

[0123] RSRQ;

[0124] RS-SINR;

[0125] Signal quality threshold;

[0126] Signal quality hysteresis factor.

[0127] In the above embodiments, based on at least one of the serving cell's RSRP, RSRQ, RS-SINR, signal quality threshold, and signal quality hysteresis factor, the terminal can determine whether to trigger an event related to the serving cell's signal quality information: the serving cell's signal quality information and the candidate cell's location information; the serving cell's signal quality information and the candidate cell's time information.

[0128] In conjunction with some embodiments of the second aspect, in some embodiments, the location information of the candidate cell includes at least one of the following:

[0129] Reference location of candidate cells;

[0130] Reference time for reference location;

[0131] ephemeris information;

[0132] The location of the terminal;

[0133] The distance between the terminal and the reference position;

[0134] Distance threshold;

[0135] Distance hysteresis factor.

[0136] In the above embodiments, based on at least one of the following: the reference location of the candidate cell, the reference time of the reference location, ephemeris information, the location of the terminal, the distance between the terminal and the reference location, the distance threshold, and the distance hysteresis factor, the terminal can determine whether to trigger an event related to the location information of the candidate cell: the signal quality information of the serving cell and the location information of the candidate cell; the location information of the candidate cell; the time information of the candidate cell and the location information of the candidate cell.

[0137] In conjunction with some embodiments of the second aspect, in some embodiments, the timing information of the candidate cells includes at least one of the following:

[0138] The first time period is the period during which the candidate cell provides services to the terminal;

[0139] The start time of the first time period;

[0140] The end time of the first period;

[0141] Duration of the first session;

[0142] Terminal time.

[0143] In the above embodiments, based on at least one of the first time period, the start time of the first time period, the end time of the first time period, the duration of the first time period, and the terminal time, it helps the terminal determine whether to trigger an event related to the time information of the candidate cell: the signal quality information of the serving cell and the time information of the candidate cell; the time information of the candidate cell and the location information of the candidate cell.

[0144] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0145] Receive configuration information sent by the network device, the configuration information including at least one of the following:

[0146] Signal quality information for the serving cell;

[0147] Location information of candidate cells;

[0148] Time information for candidate cells.

[0149] In the above embodiments, the network device sends configuration information to the terminal, which helps the terminal determine whether to trigger the corresponding event based on the configuration information, and sends a measurement report to the network device based on the event. This improves the accuracy of the network device in making network decisions based on the measurement report, thereby improving the continuity and stability of terminal communication.

[0150] In conjunction with some embodiments of the second aspect, in some embodiments, the event includes at least one of the following:

[0151] The first event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0152] The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, which is the time period during which the candidate cell provides services to the terminal;

[0153] The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold;

[0154] The fourth event is: the terminal's time is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0155] In the above embodiments, regarding the first event, the terminal sends a measurement report to the network device based on the first event, which can reduce the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good; regarding the second event, the terminal sends a measurement report to the network device based on the second event, which can reduce the probability of the terminal switching from the serving cell to the candidate cell when the signal quality of the serving cell is good; regarding the third event, the terminal sends a measurement report to the network device based on the third event, which helps the network device to make corresponding decisions based on the measurement report sent by the terminal; regarding the fourth event, the terminal sends a measurement report to the network device based on the fourth event, which helps the network device to make corresponding decisions based on the measurement report sent by the terminal.

[0156] In conjunction with some embodiments of the second aspect, in some embodiments, the entry conditions of the first event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0157] And / or,

[0158] The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0159] In the above embodiments, by setting appropriate entry conditions for the first event, when the signal quality of the serving cell is poor and the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance.

[0160] In the above embodiments, by setting appropriate departure conditions for the first event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources.

[0161] In conjunction with some embodiments of the second aspect, in some embodiments, the entry conditions of the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period;

[0162] And / or,

[0163] The conditions for leaving the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0164] In the above embodiments, by setting appropriate entry conditions for the second event, when the signal quality of the serving cell is poor and the terminal's time is later than the start time of the first time period, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance.

[0165] In the above embodiments, by setting appropriate departure conditions for the second event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources.

[0166] In conjunction with some embodiments of the second aspect, in some embodiments, the entry condition of the third event includes: the sum of the distance and the distance hysteresis factor is less than or equal to a distance threshold;

[0167] And / or,

[0168] The conditions for leaving the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0169] In the above embodiments, by setting appropriate entry conditions for the third event, when the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance.

[0170] In the above embodiments, by setting appropriate departure conditions for the third event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources.

[0171] In conjunction with some embodiments of the second aspect, in some embodiments, the entry conditions of the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0172] And / or,

[0173] The conditions for leaving the fourth event include: the time of the terminal is later than the end time of the first period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0174] In the above embodiments, by setting appropriate entry conditions for the fourth event, when the terminal's time is later than the start time of the first time period and the distance between the terminal and the candidate cell is small, the terminal sends a measurement report to the network device, which helps the network device to trigger handover and other decisions in a timely manner based on the measurement report, thereby optimizing network performance.

[0175] In the above embodiments, by setting appropriate departure conditions for the fourth event, network devices can reduce unnecessary handover operations, thereby reducing the waste of network resources.

[0176] Thirdly, embodiments of this disclosure provide a terminal, including:

[0177] The transceiver module and / or processing module are used to send measurement reports to network devices based on events, and the processing module is used to switch to a candidate cell based on events; wherein, the events include at least one of the following:

[0178] Signal quality information of the serving cell and location information of candidate cells;

[0179] Signal quality information of the serving cell and time information of the candidate cells;

[0180] Location information of candidate cells;

[0181] The time information and location information of the candidate cells.

[0182] Fourthly, embodiments of this disclosure provide a network device, including:

[0183] The transceiver module is used to receive measurement reports sent by the terminal based on events; wherein the events include at least one of the following:

[0184] Signal quality information of the serving cell and location information of candidate cells;

[0185] Signal quality information of the serving cell and time information of the candidate cells;

[0186] Location information of candidate cells;

[0187] The time information and location information of the candidate cells.

[0188] Fifthly, embodiments of this disclosure provide a communication device for performing the method described in the first aspect and optional implementations of the first aspect, or for performing the method described in the second aspect and optional implementations of the second aspect.

[0189] In a sixth aspect, embodiments of this disclosure provide a communication system including a terminal and a network device, wherein the terminal is configured to implement the method described in the first aspect and optional implementations of the first aspect, and the network device is configured to implement the method described in the second aspect and optional implementations of the second aspect.

[0190] In a seventh aspect, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the methods described in the first aspect and optional implementations of the first aspect, or cause the communication device to perform the methods described in the second aspect and optional implementations of the second aspect.

[0191] Eighthly, embodiments of this disclosure provide a program product including at least one of a program and instructions. When the program and instructions are executed by a communication device, they implement the method described in the first aspect and the optional implementation of the first aspect, or implement the method described in the second aspect and the optional implementation of the second aspect.

[0192] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in the first aspect and optional implementations of the first aspect, or the methods described in the second aspect and optional implementations of the second aspect.

[0193] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the methods described in the first aspect and its optional implementations, or the methods described in the second aspect and its optional implementations.

[0194] It is understood that the aforementioned terminals, network devices, communication devices, communication systems, storage media, and program products are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0195] This disclosure provides embodiments of communication methods, terminals, network devices, communication equipment, communication systems, storage media, and program products. In some embodiments, the terms "communication method" can be used interchangeably with "event processing method," "measurement reporting method," and "switching method," and the terms "communication equipment" can be used interchangeably with "event processing equipment," "measurement reporting equipment," and "switching equipment," and the terms "communication system" can be used interchangeably with "event processing system," "measurement reporting system," and "switching system."

[0196] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments. In all embodiments of this disclosure, unless otherwise specified or logically conflicting, the terminology and / or descriptions between the embodiments are consistent and can be mutually referenced. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0197] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0198] In this embodiment of the disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular expression or a plural expression.

[0199] In the embodiments disclosed herein, "multiple" refers to two or more.

[0200] In some embodiments, the terms “at least one of A or B, at least one of A and B”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0201] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of whether there is a branch B); in some embodiments, B (execute B regardless of whether there is a branch A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, both A and B are executed. The same applies when there are more branches such as A, B, C, etc.

[0202] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execute A regardless of whether a branch B exists); in some embodiments, B (execute B regardless of whether a branch A exists); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, and C.

[0203] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0204] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0205] In some embodiments, terms such as "time / frequency" and "time-frequency domain" refer to the time domain and / or frequency domain.

[0206] In some embodiments, terms such as “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “when…”, “if…”, etc. can be used interchangeably. These descriptions all refer to the device making a corresponding action under certain objective circumstances. They do not necessarily limit the time, nor do they require the device to make a judgment action when implementing it, nor do they mean that there must be other limitations.

[0207] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0208] In some embodiments, devices, etc., may be interpreted as physical or virtual, and their names are not limited to those described in the embodiments. Terms such as “device,” “equipment,” “circuit,” “network element,” “network function,” “network device,” “function,” “node,” “unit,” “section,” “system,” “network,” “chip,” “chip system,” “entity,” and “subject” are interchangeable.

[0209] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0210] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0211] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0212] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0213] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0214] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0215] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0216] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0217] Figure 1a is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1a, the communication system 1100 includes a terminal 1101 and a network device 1102.

[0218] In some embodiments, terminal 1101 includes, for example, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home, but is not limited thereto.

[0219] In some embodiments, network device 1102 may include at least one of access network device and core network device.

[0220] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), radio backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a Wi-Fi system, but is not limited thereto.

[0221] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within access network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0222] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the access network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0223] In some embodiments, the core network equipment may be a single device, including a first network element, a second network element, etc., or it may be multiple devices or a group of devices, each including all or part of the first network element, the second network element, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0224] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0225] The following embodiments of this disclosure can be applied to the communication system 1100 shown in FIG1a, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1a are illustrative. The communication system may include all or some of the main bodies in FIG1a, or it may include other main bodies outside of FIG1a. The number and form of each main body are arbitrary. Each main body may be physical or virtual. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0226] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0227] NTN, a technology introduced in 5G, uses satellites (or drones) instead of terrestrial base stations to provide wireless resources and communication services to terminals on the ground. Compared to terrestrial cellular communication, satellite communication has many advantages. For example, satellite communication is not limited by geography and can cover areas that are difficult to reach with conventional land-based communication, such as oceans, mountains, deserts, and other areas where communication equipment cannot be set up or where communication coverage is not possible due to sparse population. Furthermore, satellite communication is highly stable and is virtually unaffected by natural disasters.

[0228] Figure 1b is a schematic diagram of an NTN communication provided in an embodiment of the present disclosure. As shown in Figure 1b, it includes a terminal 1201, a satellite 1202, and an NTN ground station 1203.

[0229] In the NTN communication system architecture, the link between NTN ground station 1203 and satellite 1202 is a feeder link, which is mainly used to transmit signals from NTN ground station 1203 to satellite 1202. The link between terminal 1201 and satellite 1202 is a service link, which is mainly used to transmit signals from satellite 1202 to terminal 1201.

[0230] As shown in Figure 1b, Satellite 1202 can transmit signals by emitting beams towards Earth. To ensure coverage and improve the overall capacity of the satellite communication system, Satellite 1202 can employ multi-beam coverage. A single satellite can generate dozens or even hundreds of beams to cover the ground. The coverage area of ​​these beams is called the beam footprint. Different satellites can use different beam shapes and coverage areas to meet the communication needs of different regions. The area of ​​the Earth's surface that Satellite 1202 can observe is called its field of view.

[0231] Depending on the way the satellite processes signals, it can be divided into pass-through mode and regeneration mode. The following is a description of these two different modes with reference to the attached diagram.

[0232] Figure 1c is a schematic diagram of the architecture of an NTN communication system provided in an embodiment of this disclosure. Referring to Figure 1c, it includes a terminal 1301, a satellite 1302, and a base station 1303. Figure 1c illustrates the NTN communication system architecture in transparent transmission mode, where wireless communication is possible between the terminal 1301 and the satellite 1302, and communication is possible between the satellite 1302 and the base station 1303. In the architecture illustrated in Figure 1c, the satellite 1302 and the NTN ground station together constitute a remote radio unit (RRU). The network formed between the terminal 1301, the satellite 1302, and the base station 1303 can be called an NTN. The terminal 1301 and the base station 1303 communicate via the Uu interface, the base station 1303 communicates with the core network via the NG interface, the base station 1303 accesses the data network through the core network, and the core network and the data network communicate via the N6 interface.

[0233] In the transparent transmission mode illustrated in Figure 1c, the NTN ground station transmits the base station's signal to satellite 1302. Satellite 1302 converts the signal to the satellite frequency band and then transmits it to terminal 1301 via the satellite frequency band. During this process, satellite 1302 only performs frequency conversion and signal amplification; it does not demodulate the signal. In this NTN communication system architecture, satellite 1302 can be considered as a relay device between terminal 1301 and base station 1303.

[0234] Figure 1d is a second schematic diagram of the architecture of an NTN communication system provided in an embodiment of this disclosure. Referring to Figure 1d, it includes a terminal 1401 and a satellite 1402. Figure 1d illustrates the NTN communication system architecture in regeneration mode, where wireless communication is possible between the terminal 1401 and the satellite 1402. In the architecture illustrated in Figure 1d, the network formed between the terminal 1401 and the satellite 1402 can be called an NTN. The terminal 1401 and the satellite 1402 communicate via the Uu interface, the satellite 1402 communicates with the core network via the NG interface, the satellite 1402 accesses the data network through the core network, and the core network and the data network communicate via the N6 interface.

[0235] In the regeneration mode illustrated in Figure 1d, satellite 1402 functions as a base station. The NTN ground station sends the base station signal to satellite 1402. Satellite 1402 demodulates and decodes the signal and then re-encodes and modulates it (this process is called regeneration). The regenerated signal is then sent to terminal 1401 via the satellite frequency band.

[0236] In some embodiments, if the location of the terminal changes or the signal quality of the serving cell deteriorates, the communication quality between the terminal and the serving cell may be poor, thereby affecting the communication service quality of the terminal.

[0237] To address the aforementioned technical problems, this disclosure provides a communication method, terminal, network device, communication equipment, communication system, storage medium, and program product to improve the continuity and stability of terminal communication.

[0238] In wireless communication systems, cell handover refers to the handover that occurs when a terminal moves from one cell to another in order to maintain the continuity of terminal communication.

[0239] In some embodiments, the network device can trigger the terminal to perform cell handover, or the terminal can determine to perform cell handover. Examples of these two implementation methods are described below.

[0240] The process of a network device triggering a terminal to perform a cell handover can begin by the network device configuring events for the terminal, followed by the network device sending measurement configurations to notify the terminal of the events that need to be reported. The terminal measures the signal quality of the serving cell and neighboring cells according to the measurement configurations. Upon triggering the corresponding event, the terminal sends a measurement report to the network device. The network device then executes appropriate decisions based on the measurement report, such as triggering a cell handover.

[0241] The process by which a terminal determines to perform a cell handover can be a conditional handover (CHO). Network devices can pre-configure candidate target cells and their corresponding conditional events (also known as handover conditions) for the terminal. When the corresponding handover conditions are met, the terminal can perform the handover automatically without the network device triggering the handover.

[0242] In some embodiments, for TN networks, network devices can be configured with events to determine whether to perform a handover based on the configured events.

[0243] An event may include at least one of the following:

[0244] A2 event: The signal quality of the serving cell is lower than the specified signal quality threshold;

[0245] A3 event: The signal quality of the neighboring cell is higher than that of the primary / secondary cell by a specified offset;

[0246] A4 event: The signal quality of the neighboring cell is higher than the specified signal quality threshold;

[0247] Event A5: The signal quality of the primary cell / primary / secondary cell is lower than the specified signal quality threshold 1, and the signal quality of the neighboring cell / secondary cell is higher than the specified signal quality threshold 2;

[0248] Event A6: The signal quality of the neighboring cell is higher than that of the secondary cell by a specified offset;

[0249] A3 Conditional Event: The signal quality of the candidate cell for conditional reconfiguration is higher than that of the primary / secondary cell by a specified offset;

[0250] A4 Condition Event: The signal quality of the candidate cell for conditional reconfiguration is higher than the specified signal quality threshold. The A4 Condition Event can also be used for the current primary and secondary cells (i.e., when they are configured as candidate primary and secondary cells for A4 Condition Event evaluation) for handover of the candidate secondary cell group (SCG).

[0251] A5 Conditional Event: The signal quality of the primary cell / primary / secondary cell is lower than the specified signal quality threshold 1, and the signal quality of the candidate cell for conditional reconfiguration is higher than the specified signal quality threshold 2.

[0252] In some embodiments, CHO can be implemented for satellite mobility in an NTN network in the following manner:

[0253] Implementation Method 1: For earth-fixed scenarios, when the distance between the terminal and the serving cell is greater than a configured distance threshold, and the distance between the terminal and the candidate cell is less than the configured distance threshold, the terminal can execute a Change-On (CHO) to switch from the serving cell to the candidate cell. Specifically, the reference location of the serving cell can be pre-configured, and the distance between the terminal and the reference location of the serving cell can be used as the distance between the terminal and the serving cell; similarly, the reference location of the candidate cell can be pre-configured, and the distance between the terminal and the reference location of the candidate cell can be used as the distance between the terminal and the candidate cell.

[0254] Implementation Method 2: For earth-moving scenarios, when the distance between the terminal and the serving cell is greater than a configured distance threshold, and the distance between the terminal and the candidate cell is less than the configured distance threshold, the terminal can execute a Change-On (CHO) to switch from the serving cell to the candidate cell. Implementation Method 2 is similar to Implementation Method 1, but the difference lies in the fact that for earth-moving scenarios, the positions of the serving cell and the candidate cell are dynamically changing. Therefore, the terminal needs to determine the distance between itself and the serving cell based on ephemeris information, the reference position of the serving cell, and the time of that reference position, and then decide whether to execute a CHO.

[0255] Implementation method 3: When the terminal's time falls within the period when the candidate cell provides services to the terminal, the terminal can execute CHO to switch from the serving cell to the candidate cell.

[0256] In some embodiments, the serving cell of the terminal is a TN cell, and the candidate cell is an NTN cell. If the event-based decision-making system configured in the TN network is used to determine whether to perform a cell handover, there are problems such as poor timeliness of measurement results and unclear near-far effects. For example, at time t1, the terminal measures the results (including the signal quality of the serving cell and / or the candidate cell) and reports them to the network device. The network device receives the measurement results at time t2 and decides whether to perform a handover based on the measurement results at time t1. However, from time t1 to time t2, the locations of the serving cell and the candidate cell may have changed. The probability of handover failure may be high if the network device performs a handover decision based on the measurement results at time t1. For example, since the candidate cell is an NTN cell, the distance between the terminal and the satellite is relatively far. The correlation between the signal quality of the candidate cell and the distance between the terminal and the satellite is not obvious. It is difficult to determine whether the terminal is in the center or on the edge of the candidate cell based on the distance between the terminal and the satellite, which may lead to unnecessary handovers.

[0257] In some embodiments, the serving cell of the terminal is a TN cell and the candidate cell is an NTN cell. If the CHO is executed using the above implementation method 1 or implementation method 2, the terminal may perform a handover even when the signal quality of the serving cell is good, which increases the number of unnecessary handovers, resulting in resource waste and a large amount of signaling overhead. If the CHO is executed using the above implementation method 3, there may be a risk of exposing the location of network devices.

[0258] To address the aforementioned issues, this disclosure provides a communication method, terminal, network device, communication equipment, communication system, storage medium, and program product. The terminal, based on events, sends a measurement report to the network device and / or switches to a candidate cell. These events include at least one of the following: signal quality information of the serving cell and location information of the candidate cell; signal quality information of the serving cell and time information of the candidate cell; location information of the candidate cell; or time information and location information of the candidate cell. This disclosure helps the network device make corresponding decisions based on the measurement report sent by the terminal, and helps the terminal perform a switch at an appropriate time based on events. It reduces the probability of the terminal switching from the serving cell to a candidate cell when the signal quality of the serving cell is good, thus reducing the risk of exposing the network device's location.

[0259] Referring to Figure 2a, Figure 2a is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure. As shown in Figure 2a, the communication method includes the following steps:

[0260] Step S2101: The network device sends configuration information to the terminal.

[0261] In some embodiments, the network device may send configuration information to the terminal, and the terminal receives the configuration information sent by the network device and performs measurements based on the configuration information to determine whether to trigger a corresponding event.

[0262] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0263] In some embodiments, the configuration information includes at least one of the following: signal quality information of the serving cell; location information of the candidate cell; and time information of the candidate cell.

[0264] In some embodiments, the serving cell of the terminal is a TN cell, and the candidate cell is an NTN cell. The location of the TN cell is almost constant, while the location of the NTN cell can change.

[0265] In some embodiments, the candidate cell can be an earth-fixed cell; in other embodiments, the candidate cell can be an earth-moving cell.

[0266] The following sections will introduce the signal quality information of the serving cell, the location information of the candidate cells, and the time information of the candidate cells.

[0267] First, we will introduce the signal quality information of the serving cell.

[0268] The signal quality information of the serving cell is information related to the signal quality of the serving cell. In some embodiments, the signal quality of the serving cell may include measurement values ​​obtained by measuring a reference signal of the serving cell. The reference signal may include, for example, a synchronization signal block (PSS / SSS PBCH block, SSB), a channel state information-reference signal (CSI-RS), or other possible reference signals. This disclosure does not limit the specific type of reference signal, as long as it is a reference signal of the serving cell. The measurement values ​​obtained by measuring the reference signal may include, for example, RSRP, RSRQ, RS-SINR, etc.

[0269] In some embodiments, the signal quality information of the serving cell includes at least one of the following 1.1 to 1.5:

[0270] 1.1 RSRP.

[0271] In some embodiments, the signal quality information of the serving cell includes the RSRP. The terminal can measure the reference signal of the serving cell to obtain the RSRP of the reference signal. Optionally, the reference signal of the serving cell includes SSB, CSI-RS, or other possible reference signals.

[0272] RSRP is an important parameter for measuring the signal quality of a serving cell. The terminal obtains the RSRP of the reference signal by measuring the reference signal of the serving cell. Based on the RSRP of the reference signal, the terminal can determine whether an event related to the signal quality information of the serving cell has been triggered, and then decide whether to send a measurement report to the network device and / or hand over to a candidate cell.

[0273] 1.2, RSRQ.

[0274] In some embodiments, the signal quality information of the serving cell includes RSRQ. The terminal can measure the reference signal of the serving cell to obtain the RSRQ of the reference signal. Optionally, the reference signal of the serving cell includes SSB, CSI-RS, or other possible reference signals.

[0275] RSRQ is an important parameter for measuring the signal quality of a serving cell. The terminal measures the reference signal of the serving cell to obtain the RSRQ of the reference signal. Based on the RSRQ of the reference signal, the terminal can determine whether an event related to the signal quality information of the serving cell has been triggered, and then decide whether to send a measurement report to the network device and / or hand over to a candidate cell.

[0276] 1.3 RS-SINR.

[0277] In some embodiments, the signal quality information of the serving cell includes RS-SINR. The terminal can measure the reference signal of the serving cell to obtain the RS-SINR. Optionally, the reference signal of the serving cell includes SSB, CSI-RS, or other possible reference signals.

[0278] RS-SINR is an important parameter for measuring the signal quality of a serving cell. The terminal obtains RS-SINR by measuring the reference signal of the serving cell, and can then determine whether an event related to the signal quality information of the serving cell has been triggered based on RS-SINR, and thus decide whether to send a measurement report to the network device and / or hand over to a candidate cell.

[0279] 1.4 Signal quality threshold.

[0280] In some embodiments, the signal quality information of the serving cell includes a signal quality threshold. By configuring the signal quality threshold and instructing it to the terminal, the network device enables the terminal to compare the signal quality of the serving cell with the signal quality threshold, thereby helping to determine whether an event related to the signal quality information of the serving cell has been triggered.

[0281] In some embodiments, the signal quality threshold may include at least one of RSRP threshold, RSRQ threshold, and RS-SINR threshold. If the signal quality of the serving cell includes RSRP, the terminal can compare RSRP with the RSRP threshold to help determine whether an event related to the signal quality information of the serving cell has been triggered; if the signal quality of the serving cell includes RSRQ, the terminal can compare RSRQ with the RSRQ threshold to help determine whether an event related to the signal quality information of the serving cell has been triggered; if the signal quality of the serving cell includes RS-SINR, the terminal can compare RS-SINR with the RS-SINR threshold to help determine whether an event related to the signal quality information of the serving cell has been triggered, and so on.

[0282] 1.5 Signal quality hysteresis factor.

[0283] In some embodiments, the signal quality information of the serving cell includes a signal quality hysteresis factor. The signal quality hysteresis factor is a parameter introduced to reduce the frequent triggering or cancellation of events caused by signal quality fluctuations. In this embodiment, by setting the signal quality hysteresis factor, frequent triggering or cancellation of events related to the signal quality information of the serving cell can be avoided.

[0284] The location information of the candidate cells is described below.

[0285] The location information of the candidate cell is information related to the location of the candidate cell. For example, it may include the location of the candidate cell, information used to indicate the location of the candidate cell, and so on.

[0286] In some embodiments, the location information of the candidate cell includes at least one of the following 2.1 to 2.7:

[0287] 2.1 Reference location of candidate cells.

[0288] The reference location of the candidate cell is used by the terminal to calculate the distance between the terminal and the candidate cell.

[0289] In some embodiments, the reference location of a candidate cell is a location within the coverage area of ​​the candidate cell, such as the center of the coverage area or any location within the coverage area. The network device can select a location within the coverage area of ​​the candidate cell as the reference location.

[0290] In some embodiments, the network device can determine the reference location of the candidate cell and carry it in configuration information. The terminal obtains the reference location of the candidate cell by receiving the configuration information and determines the distance between the terminal and the candidate cell based on the reference location of the candidate cell.

[0291] In some embodiments, the terminal can determine the distance between the terminal and the reference location of the candidate cell based on the terminal's location and the reference location of the candidate cell, and define this distance as the distance between the terminal and the candidate cell. For example, if the candidate cell is not an earth-moving cell, the terminal can determine the distance between the terminal and the candidate cell as the distance between the terminal and the candidate cell.

[0292] In some embodiments, the terminal can determine the actual location of a candidate cell based on its reference location, ephemeris information, and reference time. Then, by combining the actual location of the candidate cell with the terminal's location, the terminal can determine the distance between the terminal and the candidate cell. For example, if the candidate cell is an earth-moving cell, the terminal can determine its actual location based on its reference location, ephemeris information, and reference time, and thus determine the distance between the terminal and the candidate cell based on the terminal's location and the actual location of the candidate cell.

[0293] 2.2 Reference time for reference position.

[0294] The reference time of a reference location refers to the moment when that reference location is determined, that is, the moment when the network device determines the reference location of the candidate cell.

[0295] In some embodiments, the network device may determine the reference time of the reference location and carry it in the configuration information. The terminal obtains the reference time of the reference location by receiving the configuration information, and determines the distance between the terminal and the candidate cell based on the reference location of the candidate cell, the reference time of the reference location, and the terminal's location.

[0296] In some embodiments, if the candidate cell is an earth-moving cell, its actual location may change over time. For example, the network device determines the reference location of the candidate cell as L1 at time t1. The terminal receives configuration information from the network device at time t2 and obtains the reference location L1 and the reference time t1 of the candidate cell based on the configuration information. However, as time changes, the actual location of the candidate cell has changed and is no longer the reference location L1. Therefore, the terminal needs to determine the actual location L2 of the candidate cell at time t2 based on the reference location L1, the reference time t1 of the reference location L1, and ephemeris information. Then, based on the terminal's location and the actual location L2 of the candidate cell at time t2, the terminal can determine the distance between the terminal and the candidate cell.

[0297] 2.3 Ephemeral Information.

[0298] Ephemeris information may include satellite velocity, orbit, reference ephemeris time, eccentricity, etc. Network devices can acquire ephemeris information and carry it in configuration information. Terminals obtain the ephemeris information by receiving configuration information and determine the distance between the terminal and candidate cells based on the ephemeris information, reference position, and reference time of the reference position.

[0299] In some embodiments, if the candidate cell is an earth-moving cell, the actual location of the candidate cell may change over time. The terminal needs to determine the actual location of the candidate cell based on ephemeris information, reference location, and reference time of the reference location, and then determine the distance between the terminal and the candidate cell based on the terminal's location and the actual location of the candidate cell. This process can be found in the relevant description in 2.2, and will not be repeated here.

[0300] 2.4. Terminal location.

[0301] The terminal's location refers to its current location, which can be determined by positioning or other possible methods.

[0302] 2.5 Distance between the terminal and the reference position.

[0303] In some embodiments, the terminal can determine the distance between the terminal and the reference location based on the terminal's location and the reference location of the candidate cell, and determine it as the distance between the terminal and the candidate cell.

[0304] In some embodiments, the network device may send configuration information to the terminal, which includes the reference location of the candidate cell. The terminal can determine the distance between the terminal and the candidate cell based on the terminal's location and the reference location of the candidate cell.

[0305] In some embodiments, if the candidate cell is an earth-moving cell, the actual location of the candidate cell may change over time. The network device can send configuration information to the terminal, which includes the reference location of the candidate cell, the reference time of the reference location, and ephemeris information. The terminal determines the actual location of the candidate cell based on the reference location, the reference time of the reference location, and the ephemeris information, and determines the distance between the terminal and the candidate cell based on the terminal's location and the actual location of the candidate cell.

[0306] 2.6 Distance threshold.

[0307] In some embodiments, the location information of the candidate cell includes a distance threshold. By configuring the distance threshold and instructing it on the terminal, the network device enables the terminal to compare the distance between the terminal and the candidate cell with the distance threshold, thereby helping to determine whether an event related to the location information of the candidate cell has been triggered.

[0308] 2.7 Distance hysteresis factor.

[0309] In some embodiments, the location information of the candidate cell includes a distance hysteresis factor. The distance hysteresis factor is a parameter introduced to reduce the frequent triggering or cancellation of events caused by distance fluctuations between the terminal and the candidate cell. In this embodiment of the disclosure, by setting the distance hysteresis factor, it is possible to avoid frequent triggering or cancellation of events related to the location information of the candidate cell.

[0310] The following section introduces the time information for the candidate cells.

[0311] The time information of the candidate cell is information related to the time of the candidate cell. For example, it includes information indicating when the candidate cell begins to provide services to the terminal, information indicating when the candidate cell ends to provide services to the terminal, information indicating the duration of the candidate cell's service to the terminal, and so on.

[0312] In some embodiments, the time information of the candidate cell includes at least one of the following 3.1 to 3.5:

[0313] 3.1 First period.

[0314] In some embodiments, the first time period is the time period during which the candidate cell provides services to the terminal, that is, the time period during which the candidate cell can provide services to the terminal.

[0315] In some embodiments, when a terminal is within the coverage area of ​​a candidate cell, the candidate cell can provide services to the terminal. Accordingly, the first time period can represent the period during which the candidate cell provides coverage or services to the terminal. For example, if the terminal enters the coverage area of ​​the candidate cell at time T1 and leaves the coverage area at time T2, then the time period from time T1 to time T2 is the first time period. As another example, if the candidate cell begins providing coverage or services to the terminal at time T1 and ends providing coverage or services at time T2, then the time period from time T1 to time T2 is the first time period.

[0316] 3.2 The start time of the first time period.

[0317] In some embodiments, the start time of the first time period represents the initial time when the candidate cell is able to provide services to the terminal.

[0318] In some embodiments, when the terminal is within the coverage area of ​​a candidate cell, the candidate cell can provide service to the terminal. Accordingly, the start time of the first time period can represent the time when the terminal enters the coverage area of ​​the candidate cell, or the time when the candidate cell initially provides coverage or service to the terminal. For example, if the terminal enters the coverage area of ​​the candidate cell at time T1, then time T1 is the start time of the first time period. As another example, if the candidate cell begins providing coverage or service to the terminal from time T1, then time T1 is the start time of the first time period.

[0319] 3.3 The end time of the first time period.

[0320] In some embodiments, the end time of the first time period represents the final time when the candidate cell can provide services to the terminal.

[0321] In some embodiments, when the terminal is within the coverage area of ​​a candidate cell, the candidate cell can provide services to the terminal. Accordingly, the end time of the first time period can represent the time when the terminal leaves the coverage area of ​​the candidate cell, or the time when the candidate cell stops providing coverage or services to the terminal. For example, if the terminal leaves the coverage area of ​​the candidate cell at time T2, then time T2 is the end time of the first time period. Or, for another example, if the candidate cell stops providing coverage or services to the terminal from time T2 onwards, then time T2 is the end time of the first time period.

[0322] 3.4 Duration of the first time period.

[0323] In some embodiments, the first time period is the time period during which the candidate cell provides services to the terminal, and correspondingly, the duration of the first time period is the duration during which the candidate cell provides services to the terminal.

[0324] In some embodiments, when the terminal is within the coverage area of ​​a candidate cell, the candidate cell can provide service to the terminal. Accordingly, the duration of the first time period can represent the time between the moment the terminal enters the coverage area of ​​the candidate cell and the moment the terminal leaves the coverage area of ​​the candidate cell, or the duration of the first time period can represent the time between the moment the candidate cell begins to provide coverage or service to the terminal and the moment the candidate cell ends to provide coverage or service to the terminal. Let the start time of the first time period be T1, the end time of the first time period be T2, and the duration of the first time period be Duration, then Duration = T2 - T1.

[0325] 3.5. Terminal time (time measured at UE).

[0326] The terminal's time can be the terminal's own time, representing the current moment on the terminal.

[0327] In some embodiments, the terminal can determine whether its time is within a first time period based on the time information of the candidate cell, which helps to determine whether an event related to the time information of the candidate cell has been triggered.

[0328] For example, if the terminal's time is not later than the start time T1 of the first time period, then the terminal's time is not within the first time period; if the terminal's time is later than the start time T1 of the first time period but not later than the end time T2 of the first time period, then the terminal's time is within the first time period; if the terminal's time is later than the end time T2 of the first time period, then the terminal's time is not within the first time period.

[0329] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0330] In step S2102, the terminal sends a measurement report to the network device based on the event.

[0331] In some embodiments, the event is used to trigger the sending of a measurement report to the network device.

[0332] In some embodiments, the event includes at least one of the following:

[0333] Signal quality information of the serving cell and location information of candidate cells;

[0334] Signal quality information of the serving cell and time information of the candidate cells;

[0335] Location information of candidate cells;

[0336] The time information and location information of the candidate cells.

[0337] In some embodiments, the event includes signal quality information of the serving cell and location information of the candidate cell, that is, the event is related to the signal quality information of the serving cell and the location information of the candidate cell.

[0338] In some embodiments, the event includes a first event, which is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0339] In some embodiments, the terminal can determine whether the signal quality of the serving cell is less than or equal to a signal quality threshold based on the signal quality information of the serving cell, and determine whether the distance between the terminal and the candidate cell is less than or equal to a distance threshold based on the location information of the candidate cell. If the signal quality of the serving cell is less than or equal to the signal quality threshold and the distance between the terminal and the candidate cell is less than or equal to the distance threshold, a measurement report is sent to the network device.

[0340] In some embodiments, the entry conditions for the first event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold.

[0341] The entry condition for the first event refers to the conditions that trigger the first event. In other words, if the entry condition for the first event is met, the first event is triggered. When the first event is triggered, the terminal sends a measurement report to the network device.

[0342] In some embodiments, the entry condition for the first event can be found in the following equations (1) and (2): Ms + Hys1 ≤ Thresh1 (1) Ml + Hys2 ≤ Thresh2 (2)

[0343] Where Ms is the signal quality of the serving cell (e.g., it may include at least one of RSRP, RSRQ, and RS-SINR), Hys1 is the signal quality hysteresis factor, and Thresh1 is the signal quality threshold (e.g., it may include at least one of RSRP threshold, RSRQ threshold, and RS-SINR threshold); Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0344] Equation (1) represents the sum of the signal quality of the serving cell and the signal quality hysteresis factor, which is less than or equal to the signal quality threshold; Equation (2) represents the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor, which is less than or equal to the distance threshold. If Equations (1) and (2) are satisfied, it means that the entry condition for the first event is met, and the terminal can send a measurement report to the network device.

[0345] In some embodiments, the departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to a signal quality threshold; and / or, the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to a distance threshold.

[0346] The departure condition of the first event refers to the condition for canceling (or revoking) the first event. In other words, if the departure condition of the first event is met, the first event is canceled. In the case of canceling the first event, the terminal does not send a measurement report to the network device.

[0347] In some embodiments, the departure condition of the first event can be found in equations (3) and (4) below: Ms-Hys1≥Thresh1 (3) Ml-Hys2≥Thresh2 (4)

[0348] Where Ms is the signal quality of the serving cell (e.g., it may include at least one of RSRP, RSRQ, and RS-SINR), Hys1 is the signal quality hysteresis factor, and Thresh1 is the signal quality threshold (e.g., it may include at least one of RSRP threshold, RSRQ threshold, and RS-SINR threshold); Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0349] Equation (3) represents the difference between the signal quality of the serving cell and the signal quality hysteresis factor, which is greater than or equal to the signal quality threshold; Equation (4) represents the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor, which is greater than or equal to the distance threshold. If Equation (3) and / or Equation (4) are satisfied, it means that the departure condition of the first event is met, and the terminal does not send a measurement report to the network device.

[0350] In some embodiments, by setting a signal quality hysteresis factor and a distance hysteresis factor in the entry and exit conditions of the first event, it is possible to effectively avoid frequent triggering or cancellation of the first event due to signal quality fluctuations of the serving cell and / or distance fluctuations between the terminal and the candidate cell.

[0351] In some embodiments, after the entry condition of the first event is met, the terminal may delay sending a measurement report to the network device for a period of time, which may be called the time to trigger (TTT). If the entry condition of the first event is continuously met within the TTT, the terminal sends a measurement report to the network device after the TTT has elapsed. This method ensures that the terminal sends a measurement report to the network device only when the entry condition of the first event is continuously met, reducing unnecessary measurement report reporting caused by fluctuations in the signal quality of the serving cell and / or fluctuations in the distance between the terminal and the candidate cell.

[0352] In some embodiments, the entry condition of the first event includes: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold; the departure condition of the first event includes: the signal quality of the serving cell is greater than a signal quality threshold, and / or the distance between the terminal and the candidate cell is greater than a distance threshold.

[0353] In some embodiments, the entry condition for the first event can be found in equations (5) and (6) below: Ms≤Thresh1 (5) Ml≤Thresh2 (6)

[0354] Ms is the signal quality of the serving cell, Thresh1 is the signal quality threshold; Ml is the distance between the terminal and the candidate cell, and Thresh2 is the distance threshold. If equations (5) and (6) are satisfied, it means that the entry condition for the first event is met, and the terminal can send a measurement report to the network device.

[0355] In some embodiments, the departure condition of the first event can be found in equations (7) and (8) below: Ms>Thresh1 (7) Ml>Thresh2 (8)

[0356] Ms is the signal quality of the serving cell, Thresh1 is the signal quality threshold; Ml is the distance between the terminal and the candidate cell, Thresh2 is the distance threshold. If equation (7) and / or equation (8) are satisfied, it means that the departure condition of the first event is met, and the terminal does not send a measurement report to the network device.

[0357] In some embodiments, the event includes signal quality information of the serving cell and time information of the candidate cell, that is, the event is related to the signal quality information of the serving cell and the time information of the candidate cell.

[0358] In some embodiments, the event includes a second event, which is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the terminal's time is within a first time period, which is the time period during which the candidate cell provides services to the terminal.

[0359] In some embodiments, the terminal can determine whether the signal quality of the serving cell is less than or equal to a signal quality threshold based on the signal quality information of the serving cell, and determine whether the terminal's time is within a first time period based on the time information of the candidate cell. If the signal quality of the serving cell is less than or equal to the signal quality threshold and the terminal's time is within the first time period, the terminal sends a measurement report to the network device.

[0360] In some embodiments, the conditions for the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period.

[0361] The entry condition for the second event refers to the condition that triggers the second event. In other words, if the entry condition for the second event is met, the second event is triggered. When the second event is triggered, the terminal sends a measurement report to the network device.

[0362] In some embodiments, the entry condition for the second event can be found in equations (9) and (10) below: Ms + Hys1 ≤ Thresh1 (9) Mt > T1 (10)

[0363] Where Ms is the signal quality of the serving cell (e.g., it may include at least one of RSRP, RSRQ, and RS-SINR), Hys1 is the signal quality hysteresis factor, Thresh1 is the signal quality threshold (e.g., it may include at least one of RSRP threshold, RSRQ threshold, and RS-SINR threshold); Mt is the terminal time, and T1 is the start time of the first time period.

[0364] Equation (9) represents the sum of the signal quality of the serving cell and the signal quality hysteresis factor, which is less than or equal to the signal quality threshold; Equation (10) represents the terminal's time being later than the start time of the first time period. If Equations (9) and (10) are satisfied, it means that the entry conditions for the second event are met, and the terminal can send a measurement report to the network device.

[0365] In some embodiments, the departure conditions of the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0366] The departure condition of the second event refers to the condition for canceling the second event. That is, if the departure condition of the second event is met, the second event is canceled. In the case of canceling the second event, the terminal does not send a measurement report to the network device.

[0367] In some embodiments, the departure condition of the second event can be seen in the following formula (11) and formula (12): Ms - Hys1 ≥ Thresh1 (11) Mt > T2 (12)

[0368] Where, Ms is the signal quality of the serving cell (for example, it can include at least one of RSRP, RSRQ, RS - SINR), Hys1 is the signal quality hysteresis factor, Thresh1 is the signal quality threshold (for example, it can include at least one of the RSRP threshold, RSRQ threshold, RS - SINR threshold); Mt is the time of the terminal, and T2 is the end time of the first period.

[0369] Formula (11) means that the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; formula (12) means that the time of the terminal is later than the end time of the first period. If formula (11) and / or formula (12) are satisfied, it means that the departure condition of the second event is currently met, and the terminal does not send a measurement report to the network device.

[0370] Combining formula (10) and formula (12), it can be seen that when the time of the terminal is later than the start time T1 of the first period, the time of the terminal starts to be within the first period; when the time of the terminal is later than the end time T2 of the first period, the time of the terminal is no longer within the first period. Therefore, for formula (10), formula (10) is equivalent to "T1 < Mt ≤ T2". That is, the meanings represented by formula (9) and formula (10) are: when both Ms + Hys1 ≤ Thresh1 and T1 < Mt ≤ T2 are satisfied, the entry condition of the second event is met.

[0371] In some embodiments, by setting the signal quality hysteresis factor in the entry condition and departure condition of the second event, it is possible to effectively avoid frequent triggering or cancellation of the second event due to the signal quality fluctuation of the serving cell.

[0372] In some embodiments, after the entry conditions of the second event are met, the terminal may delay sending a measurement report to the network device for a period of time, which may be called the time to trigger (TTT). If the entry conditions of the second event are met continuously within the TTT, the terminal sends a measurement report to the network device after the TTT has elapsed. This method ensures that the terminal sends a measurement report to the network device only when the entry conditions of the second event are continuously met, reducing unnecessary measurement report reporting caused by fluctuations in the signal quality of the serving cell or misjudgments.

[0373] In some embodiments, the entry conditions for the second event include: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the time of the terminal is later than the start time of the first time period; the exit conditions for the second event include: the signal quality of the serving cell is greater than the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0374] In some embodiments, the entry conditions for the second event can be found in equations (13) and (14) below: Ms≤Thresh1 (13) Mt>T1 (14)

[0375] Ms is the signal quality of the serving cell, Thresh1 is the signal quality threshold; Mt is the terminal time, and T1 is the start time of the first time period. If equations (13) and (14) are satisfied, it means that the entry conditions for the second event are met, and the terminal can send a measurement report to the network device.

[0376] In some embodiments, the departure condition of the second event can be found in the following equations (15) and (16): Ms>Thresh1 (15) Mt>T2 (16)

[0377] Ms is the signal quality of the serving cell, Thresh1 is the signal quality threshold; Mt is the terminal time, and T2 is the end time of the first time period. If equation (15) and / or equation (16) are satisfied, it means that the departure condition of the second event is met, and the terminal does not send a measurement report to the network device.

[0378] Combining equations (14) and (16), it can be seen that when the time of the terminal is later than the start time T1 of the first period, the time of the terminal starts to be within the first period; when the time of the terminal is later than the end time T2 of the first period, the time of the terminal is no longer within the first period. Therefore, for equation (14), equation (14) is equivalent to "T1 < Mt ≤ T2". That is to say, the meanings represented by equations (14) and (16) are: when Ms ≤ Thresh1 and T1 < Mt ≤ T2 are satisfied simultaneously, the entry condition of the second event is satisfied.

[0379] In some embodiments, the event includes the location information of the candidate cell, that is, the event is an event related to the location information of the candidate cell.

[0380] In some embodiments, the event includes a third event, and the third event is: the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0381] In some embodiments, the terminal can determine whether the distance between the terminal and the candidate cell is less than or equal to the distance threshold according to the location information of the candidate cell. If the distance between the terminal and the candidate cell is less than or equal to the distance threshold, a measurement report is sent to the network device.

[0382] In some embodiments, the entry condition of the third event includes: the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold.

[0383] The entry condition of the third event refers to the condition for triggering the third event. That is to say, if the entry condition of the third event is satisfied, the third event is triggered. In the case of triggering the third event, the terminal sends a measurement report to the network device.

[0384] In some embodiments, the entry condition of the third event can be seen in the following equation (17): Ml + Hys2 ≤ Thresh2 (17)

[0385] Where, Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0386] Equation (17) represents that the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold. If equation (17) is satisfied, it means that the current entry condition of the third event is satisfied, and the terminal can send a measurement report to the network device.

[0387] In some embodiments, the departure condition for the third event includes: the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to a distance threshold.

[0388] The departure condition of the third event refers to the condition for canceling the third event. In other words, if the departure condition of the third event is met, the third event is canceled. In the case of canceling the third event, the terminal does not send a measurement report to the network device.

[0389] In some embodiments, the departure condition of the third event can be found in the following equation (18): Ml-Hys2≥Thresh2 (18)

[0390] Where Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0391] Equation (18) represents the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor, which is greater than or equal to the distance threshold. If equation (18) is satisfied, it means that the departure condition of the third event is met, and the terminal does not send a measurement report to the network device.

[0392] In some embodiments, by setting a distance hysteresis factor in the entry and exit conditions of the third event, it is possible to effectively avoid frequent triggering or cancellation of the third event due to distance fluctuations between the terminal and the candidate cell.

[0393] In some embodiments, after the entry conditions of the third event are met, the terminal may delay sending a measurement report to the network device for a period of time, which may be called the time to trigger (TTT). If the entry conditions of the third event are met continuously within the TTT, the terminal sends a measurement report to the network device after the TTT has elapsed. This method ensures that the terminal sends a measurement report to the network device only when the entry conditions of the third event are continuously met, reducing unnecessary measurement report reporting caused by distance fluctuations between the terminal and the candidate cell.

[0394] In some embodiments, the entry condition for the third event includes: the distance between the terminal and the candidate cell is less than or equal to a distance threshold; the exit condition for the third event includes: the distance between the terminal and the candidate cell is greater than the distance threshold.

[0395] In some embodiments, the entry condition for the third event can be found in the following equation (19): Ml≤Thresh2 (19)

[0396] Ml is the distance between the terminal and the candidate cell, and Thresh2 is the distance threshold. If equation (19) is satisfied, it means that the entry condition for the third event is met, and the terminal can send a measurement report to the network device.

[0397] In some embodiments, the departure condition of the third event can be found in the following equation (20): Ml>Thresh2 (20)

[0398] Ml is the distance between the terminal and the candidate cell, and Thresh2 is the distance threshold. If equation (20) is satisfied, it means that the departure condition of the third event is met, and the terminal does not send a measurement report to the network device.

[0399] In some embodiments, the event includes time information and location information of the candidate cell, that is, the event is related to the time information and location information of the candidate cell.

[0400] In some embodiments, the event includes a fourth event, which is: the terminal's time is within a first time period, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0401] In some embodiments, the entry conditions for the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold.

[0402] The entry condition for the fourth event refers to the conditions that trigger the fourth event. In other words, if the entry condition for the fourth event is met, the fourth event is triggered. When the fourth event is triggered, the terminal sends a measurement report to the network device.

[0403] In some embodiments, the entry conditions for the fourth event can be found in the following equations (21) and (22): Mt>T1 (21) Ml+Hys2≤Thresh2 (22)

[0404] Where Mt is the terminal's time, T1 is the start time of the first time period; Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0405] Equation (21) indicates that the terminal's time is later than the start time of the first time period, and Equation (22) indicates that the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold. If Equations (21) and (22) are satisfied, it means that the entry conditions for the fourth event are met, and the terminal can send a measurement report to the network device.

[0406] In some embodiments, the departure conditions for the fourth event include: the time of the terminal is later than the end time of the first time period; and / or, the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to the distance threshold.

[0407] The departure condition of the fourth event refers to the condition for canceling the fourth event. In other words, if the departure condition of the fourth event is met, the fourth event is canceled. In the case of canceling the fourth event, the terminal does not send a measurement report to the network device.

[0408] In some embodiments, the departure condition of the fourth event can be found in the following equations (23) and (24): Mt>T2 (23) Ml-Hys2≥Thresh2 (24)

[0409] Where Mt is the terminal's time, T2 is the end time of the first time period; Ml is the distance between the terminal and the candidate cell, Hys2 is the distance hysteresis factor, and Thresh2 is the distance threshold.

[0410] Equation (23) indicates that the terminal's time is later than the end of the first time period; Equation (24) indicates that the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to the distance threshold. If Equation (23) and / or Equation (24) are satisfied, it means that the departure condition of the fourth event is met, and the terminal does not send a measurement report to the network device.

[0411] Combining Equation (21) and Equation (23), it can be seen that when the time of the terminal is later than the start time T1 of the first period, the time of the terminal starts to be within the first period; when the time of the terminal is later than the end time T2 of the first period, the time of the terminal is no longer within the first period. Therefore, for Equation (21), Equation (21) is equivalent to "T1 < Mt ≤ T2". That is to say, the meanings represented by Equation (21) and Equation (22) are: when both T1 < Mt ≤ T2 and Ml + Hys2 ≤ Thresh2 are satisfied, the entry condition of the fourth event is met.

[0412] In some embodiments, by setting a distance hysteresis factor in the entry condition and departure condition of the fourth event, it is possible to effectively avoid frequent triggering or cancellation of the fourth event due to distance fluctuations between the terminal and the candidate cell.

[0413] In some embodiments, after the entry condition of the fourth event is satisfied, the terminal can delay for a period of time before sending a measurement report to the network device. This period of time can be referred to as the time to trigger (TTT). If the entry condition of the fourth event continues to be satisfied within the time to trigger, then after the time to trigger, the terminal sends a measurement report to the network device. This method can ensure that the terminal sends a measurement report to the network device only when the entry condition of the fourth event is continuously satisfied, reducing unnecessary measurement report submissions due to distance fluctuations between the terminal and the candidate cell.

[0414] In some embodiments, the entry condition of the fourth event includes: the time of the terminal is later than the start time of the first period, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0415] In some embodiments, the entry condition of the fourth event can be seen in the following Equation (25) and Equation (26): Mt > T1 (25) Ml ≤ Thresh2 (26)

[0416] Mt is the time of the terminal, T1 is the start time of the first period; Ml is the distance between the terminal and the candidate cell, and Thresh2 is the distance threshold. If Equation (25) and Equation (26) are satisfied, it means that the entry condition of the fourth event is currently met, and the terminal can send a measurement report to the network device.

[0417] In some embodiments, the leaving conditions for the fourth event include: the time of the terminal is later than the end time of the first period; and / or, the distance between the terminal and the candidate cell is greater than the distance threshold.

[0418] In some embodiments, the leaving conditions for the fourth event can be seen from the following formulas (27) and (28): Mt>T2 (27) Ml>Thresh2 (28)

[0419] Mt is the time of the terminal, T2 is the end time of the first period; Ml is the distance between the terminal and the candidate cell, and Thresh2 is the distance threshold. If formulas (27) and / or (28) are satisfied, it means that the leaving conditions for the fourth event are currently met, and the terminal does not send a measurement report to the network device.

[0420] Combining formulas (25) and (27), it can be seen that when the time of the terminal is later than the start time T1 of the first period, the time of the terminal starts to be within the first period; when the time of the terminal is later than the end time T2 of the first period, the time of the terminal is no longer within the first period. Therefore, for formula (25), formula (25) is equivalent to "T1<Mt≤T2". That is to say, the meanings represented by formulas (25) and (27) are: when both T1<Mt≤T2 and Ml≤Thresh2 are satisfied, the entry conditions for the fourth event are met.

[0421] In some embodiments, if the entry conditions for an event (including at least one of the first event, the second event, the third event, and the fourth event) are satisfied, the terminal sends a measurement report to the network device. The measurement report may include, for example, the signal quality of the serving cell and / or the signal quality of the candidate cell. The network device receives the measurement report sent by the terminal and then makes corresponding decisions based on the measurement report. For example, the network device may make a decision to perform cell handover based on the measurement report, and switch the terminal from the serving cell to the candidate cell. For example, the network device may perform load balancing based on the measurement report, and so on.

[0422] The communication method involved in the embodiments of the present disclosure may include at least one of steps S2101 to step S2102. For example, step S2102 may be implemented as an independent embodiment, and step S2101 + step S2102 may be implemented as an independent embodiment, but not limited thereto.

[0423] In some embodiments, step S2101 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0424] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0425] Referring to Figure 2b, which is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure, the communication method includes the following steps:

[0426] Step S2201: The network device sends configuration information to the terminal.

[0427] In some embodiments, the network device may send configuration information to the terminal, and the terminal receives the configuration information and performs measurements based on the configuration information to determine whether to trigger a corresponding event.

[0428] In some embodiments, the configuration information includes at least one of the following: signal quality information of the serving cell; location information of the candidate cell; and time information of the candidate cell.

[0429] In some embodiments, optional implementations of step S2201 can be found in optional implementations of step S2101 in FIG2a, and other related parts in the embodiments involved in FIG2a, which will not be repeated here.

[0430] In step S2202, the terminal switches to the candidate cell based on the event.

[0431] In some embodiments, the event is used to trigger the terminal to perform a cell handover, that is, to switch from the serving cell to the candidate cell.

[0432] In some embodiments, the event includes at least one of the following:

[0433] Signal quality information of the serving cell and location information of candidate cells;

[0434] Signal quality information of the serving cell and time information of the candidate cells;

[0435] Location information of candidate cells;

[0436] The time information and location information of the candidate cells.

[0437] In some embodiments, the description of the signal quality information of the serving cell, the location information of the candidate cell, and the time information of the candidate cell can be found in the relevant description in step S2101 of Figure 2a, and will not be repeated here.

[0438] In some embodiments, the event includes a first event, which is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0439] In some embodiments, the terminal can determine whether the signal quality of the serving cell is less than or equal to a signal quality threshold based on the signal quality information of the serving cell, and determine whether the distance between the terminal and the candidate cell is less than or equal to a distance threshold based on the location information of the candidate cell. If the signal quality of the serving cell is less than or equal to the signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold, the terminal switches from the serving cell to the candidate cell.

[0440] In some embodiments, the entry conditions for the first event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold.

[0441] The entry condition for the first event refers to the condition that triggers the first event. That is, if the entry condition for the first event is met, the first event is triggered. When the first event is triggered, the terminal switches from the serving cell to the candidate cell. The entry condition for the first event can be found in the relevant descriptions of equations (1) and (2) in step S2102 of Figure 2a, which will not be repeated here.

[0442] In some embodiments, the departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to a signal quality threshold; and / or, the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to a distance threshold.

[0443] The departure condition of the first event refers to the condition for canceling the first event. That is, if the departure condition of the first event is met, the first event is canceled. In the case of canceling the first event, the terminal does not perform the operation of handing over to the candidate cell. The departure condition of the first event can be found in the relevant introduction of equations (3) and (4) in step S2102 of Figure 2a, which will not be repeated here.

[0444] In some embodiments, by setting a signal quality hysteresis factor and a distance hysteresis factor in the entry and exit conditions of the first event, it is possible to effectively avoid frequent triggering or cancellation of the first event due to signal quality fluctuations of the serving cell and / or distance fluctuations between the terminal and the candidate cell.

[0445] In some embodiments, after the entry condition of the first event is met, the terminal may delay switching to the candidate cell for a period of time, which can be called the time to trigger (TTT). If the entry condition of the first event is continuously met within the TTT, the terminal switches to the candidate cell after the TTT has elapsed. This method ensures that the terminal switches to the candidate cell only when the entry condition of the first event is continuously met, reducing unnecessary handover operations caused by fluctuations in the signal quality of the serving cell and / or fluctuations in the distance between the terminal and the candidate cell, thereby improving the handover success rate.

[0446] In some embodiments, the entry conditions for the first event include: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold. The entry conditions for the first event can be found in the relevant descriptions of equations (5) and (6) in step S2102 of Figure 2a, and will not be repeated here.

[0447] In some embodiments, the departure conditions for the first event include: the signal quality of the serving cell is greater than a signal quality threshold, and / or, the distance between the terminal and the candidate cell is greater than a distance threshold. The departure conditions for the first event can be found in the relevant descriptions of equations (7) and (8) in step S2102 of Figure 2a, which will not be repeated here.

[0448] In some embodiments, the event includes a second event, which is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the terminal's time is within a first time period, which is the time period during which the candidate cell provides services to the terminal.

[0449] In some embodiments, the terminal can determine whether the signal quality of the serving cell is less than or equal to a signal quality threshold based on the signal quality information of the serving cell, and determine whether the terminal's time is within a first time period based on the time information of the candidate cell. If the signal quality of the serving cell is less than or equal to the signal quality threshold and the terminal's time is within the first time period, the terminal switches to the candidate cell.

[0450] In some embodiments, the conditions for the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period.

[0451] The entry condition for the second event refers to the condition that triggers the second event. That is, if the entry condition for the second event is met, the second event is triggered, and the terminal switches to the candidate cell when the second event is triggered. The entry condition for the second event can be found in the relevant descriptions of equations (9) and (10) in step S2102 of Figure 2a, which will not be repeated here.

[0452] In some embodiments, the departure conditions of the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0453] The departure condition of the second event refers to the condition for canceling the second event. That is, if the departure condition of the second event is met, the second event is canceled. In the case of canceling the second event, the terminal does not perform the operation of handing over to the candidate cell. The departure condition of the second event can be found in the relevant introduction of equations (11) and (12) in step S2102 of Figure 2a, which will not be repeated here.

[0454] In some embodiments, by setting a signal quality hysteresis factor in the entry and exit conditions of the second event, it is possible to effectively avoid frequent triggering or cancellation of the second event due to fluctuations in the signal quality of the serving cell.

[0455] In some embodiments, after the entry conditions of the second event are met, the terminal may delay for a period of time before performing the handover to the candidate cell. This period can be called the time to trigger (TTT). If the entry conditions of the second event are continuously met within the TTT, the terminal will handover to the candidate cell after the TTT has elapsed. This method ensures that the terminal only hands over to the candidate cell when the entry conditions of the second event are continuously met, reducing unnecessary handover operations caused by fluctuations in the signal quality of the serving cell or misjudgments, and improving the handover success rate.

[0456] In some embodiments, the entry conditions for the second event include: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the time of the terminal is later than the start time of the first time period. The entry conditions for the second event can be found in the relevant descriptions of equations (13) and (14) in step S2102 of Figure 2a, which will not be repeated here.

[0457] In some embodiments, the departure conditions for the second event include: the signal quality of the serving cell is greater than the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period. The departure conditions for the second event can be found in the relevant descriptions of equations (15) and (16) in step S2102 of Figure 2a, which will not be repeated here.

[0458] In some embodiments, the event includes a third event, which is: the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0459] In some embodiments, the terminal can determine whether the distance between the terminal and the candidate cell is less than or equal to a distance threshold based on the location information of the candidate cell. If the distance between the terminal and the candidate cell is less than or equal to the distance threshold, the terminal switches to the candidate cell.

[0460] In some embodiments, the entry condition for the third event includes: the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold.

[0461] The entry condition for the third event refers to the condition that triggers the third event. That is, if the entry condition for the third event is met, the third event is triggered, and the terminal switches to the candidate cell when the third event is triggered. The entry condition for the third event can be found in the relevant description of formula (17) in step S2102 of Figure 2a, which will not be repeated here.

[0462] In some embodiments, the departure condition for the third event includes: the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor is greater than or equal to a distance threshold.

[0463] The departure condition of the third event refers to the condition for canceling the third event. That is, if the departure condition of the third event is met, the third event is canceled. In the case of canceling the third event, the terminal does not perform the operation of handing over to the candidate cell. The departure condition of the third event can be found in the relevant introduction of formula (18) in step S2102 of Figure 2a, which will not be repeated here.

[0464] In some embodiments, by setting a distance hysteresis factor in the entry and exit conditions of the third event, it is possible to effectively avoid frequent triggering or cancellation of the third event due to distance fluctuations between the terminal and the candidate cell.

[0465] In some embodiments, after the entry conditions of the third event are met, the terminal may delay switching to the candidate cell for a period of time, which can be called the time to trigger (TTT). If the entry conditions of the third event are continuously met within the TTT, the terminal switches to the candidate cell after the TTT has elapsed. This method ensures that the terminal switches to the candidate cell only when the entry conditions of the third event are continuously met, reducing unnecessary handover operations caused by distance fluctuations between the terminal and the candidate cell, and improving the handover success rate.

[0466] In some embodiments, the entry condition for the third event includes: the distance between the terminal and the candidate cell is less than or equal to a distance threshold. The entry condition for the third event can be found in the relevant description of formula (19) in step S2102 of Figure 2a, and will not be repeated here.

[0467] In some embodiments, the departure condition for the third event includes: the distance between the terminal and the candidate cell is greater than a distance threshold. The departure condition for the third event can be found in the relevant description of formula (20) in step S2102 of Figure 2a, and will not be repeated here.

[0468] In some embodiments, the event includes a fourth event, which is: the terminal's time is within a first time period, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold.

[0469] In some embodiments, the entry conditions for the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold.

[0470] The entry condition for the fourth event refers to the condition that triggers the fourth event. That is, if the entry condition for the fourth event is met, the fourth event is triggered, and the terminal switches to the candidate cell when the fourth event is triggered. The entry condition for the fourth event can be found in the relevant description of equations (21) and (22) in step S2102 of Figure 2a, which will not be repeated here.

[0471] The conditions for leaving the fourth event include: the terminal's time being later than the end of the first time period; and / or, the difference between the distance between the terminal and the candidate cell and the distance hysteresis factor being greater than or equal to the distance threshold.

[0472] The departure condition of the fourth event refers to the condition for canceling the fourth event. That is, if the departure condition of the fourth event is met, the fourth event is canceled. In the case of canceling the fourth event, the terminal does not perform the operation of handing over to the candidate cell. The departure condition of the fourth event can be found in the relevant introduction of equations (23) and (24) in step S2102 of Figure 2a, which will not be repeated here.

[0473] In some embodiments, by setting a distance hysteresis factor in the entry and exit conditions of the fourth event, it is possible to effectively avoid frequent triggering or cancellation of the fourth event due to distance fluctuations between the terminal and the candidate cell.

[0474] In some embodiments, after the entry conditions of the fourth event are met, the terminal may delay sending a measurement report to the network device for a period of time, which may be called the time to trigger (TTT). If the entry conditions of the fourth event are met continuously within the TTT, the terminal will switch to the candidate cell after the TTT has elapsed. This method ensures that the terminal only switches to the candidate cell if the entry conditions of the fourth event are met continuously, reducing unnecessary handover operations caused by distance fluctuations between the terminal and the candidate cell.

[0475] In some embodiments, the entry conditions for the fourth event include: the terminal's time is later than the start time of the first time period, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold. The entry conditions for the fourth event can be found in the relevant descriptions of equations (25) and (26) in step S2102 of Figure 2a, which will not be repeated here.

[0476] In some embodiments, the departure conditions for the fourth event include: the terminal's time being later than the end time of the first time period, and / or the distance between the terminal and the candidate cell being greater than a distance threshold. The departure conditions for the fourth event can be found in the relevant descriptions of equations (27) and (28) in step S2102 of Figure 2a, which will not be repeated here.

[0477] The communication method involved in the embodiments of this disclosure may include at least one of steps S2201 to S2202. For example, step S2202 may be implemented as a standalone embodiment, and step S2201 + step S2202 may be implemented as a standalone embodiment, but is not limited thereto.

[0478] In some embodiments, step S2201 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0479] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0480] Referring to Figure 3a, which is an exemplary interactive schematic diagram of a communication method provided according to an embodiment of the present disclosure. As shown in Figure 3a, the communication method includes the following steps:

[0481] In step S3101, the terminal sends a measurement report to the network device based on the event.

[0482] In some embodiments, the event includes at least one of the following:

[0483] Signal quality information of the serving cell and location information of candidate cells;

[0484] Signal quality information of the serving cell and time information of the candidate cells;

[0485] Location information of candidate cells;

[0486] The time information and location information of the candidate cells.

[0487] In some embodiments, the signal quality information of the serving cell may include at least one of the following: RSRP, RSRQ, RS-SINR, signal quality threshold, and signal quality hysteresis factor.

[0488] In some embodiments, the terminal may measure the signal quality of the serving cell, which may include at least one of RSRP, RSRQ, and RS-SINR.

[0489] In some embodiments, the location information of the candidate cell may include at least one of the following: the reference location of the candidate cell, the reference time of the reference location, ephemeris information, the location of the terminal, the distance between the terminal and the reference location, the distance threshold, and the distance hysteresis factor.

[0490] In some embodiments, the terminal can determine the distance between itself and a candidate cell based on the candidate cell's location information. For example, the terminal can determine the distance between itself and the reference location of the candidate cell based on the candidate cell's reference location and its own location, and then define this distance as the actual distance between the terminal and the candidate cell. For instance, if the candidate cell is an earth-moving cell, meaning its location is dynamically changing, the terminal can determine the actual location of the candidate cell based on its reference location, the reference time of the reference location, and ephemeris information, and then determine the distance between itself and the candidate cell based on the actual location of the candidate cell and its own location.

[0491] In some embodiments, the time information of the candidate cell may include at least one of the following: a first time period, the start time of the first time period, the end time of the first time period, the duration of the first time period, and the time of the terminal.

[0492] In some embodiments, the terminal can determine a first time period for which the candidate cell will provide services to the terminal based on the candidate cell's time information. For example, the terminal can determine the first time period based on the start time and end time of the first time period. For example, the terminal can determine the first time period based on the start time and duration of the first time period. For example, the terminal can determine the first time period based on the end time and duration of the first time period.

[0493] In some embodiments, if the event includes signal quality information of the serving cell and location information of the candidate cell, the terminal can determine whether the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to a signal quality threshold based on the signal quality information of the serving cell; the terminal can also determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, then the terminal sends a measurement report to the network device.

[0494] In some embodiments, if the event includes signal quality information of the serving cell and time information of the candidate cell, the terminal can determine whether the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to a signal quality threshold based on the signal quality information of the serving cell; the terminal can determine whether its time is within a first time period based on the time information of the candidate cell. If the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, the terminal sends a measurement report to the network device.

[0495] In some embodiments, if the event includes the location information of the candidate cell, the terminal can determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, the terminal sends a measurement report to the network device.

[0496] In some embodiments, if the event includes the time information and location information of the candidate cell, the terminal can determine whether its time is within a first time period based on the time information of the candidate cell, and determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the terminal's time is within the first time period, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, the terminal sends a measurement report to the network device.

[0497] The measurement report may include, for example, the signal quality of the serving cell and / or the signal quality of the candidate cell. The network device receives the measurement report from the terminal and then performs corresponding decisions based on the report. For example, the network device may make a cell handover decision based on the measurement report, switching the terminal from the serving cell to a candidate cell. The network device may also perform load balancing based on the measurement report, and so on.

[0498] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0499] Referring to Figure 3b, which is an exemplary schematic diagram of a communication method provided according to an embodiment of the present disclosure, the communication method includes the following steps:

[0500] In step S3201, the terminal switches to the candidate cell based on the event.

[0501] In some embodiments, the event includes at least one of the following:

[0502] Signal quality information of the serving cell and location information of candidate cells;

[0503] Signal quality information of the serving cell and time information of the candidate cells;

[0504] Location information of candidate cells;

[0505] The time information and location information of the candidate cells.

[0506] In some embodiments, the signal quality information of the serving cell may include at least one of the following: RSRP, RSRQ, RS-SINR, signal quality threshold, and signal quality hysteresis factor.

[0507] In some embodiments, the terminal may measure the signal quality of the serving cell, which may include at least one of RSRP, RSRQ, and RS-SINR.

[0508] In some embodiments, the location information of the candidate cell may include at least one of the following: the reference location of the candidate cell, the reference time of the reference location, ephemeris information, the location of the terminal, the distance between the terminal and the reference location, the distance threshold, and the distance hysteresis factor.

[0509] In some embodiments, the terminal can determine the distance between itself and a candidate cell based on the candidate cell's location information. For example, the terminal can determine the distance between itself and the reference location of the candidate cell based on the candidate cell's reference location and its own location, and then define this distance as the actual distance between the terminal and the candidate cell. For instance, if the candidate cell is an earth-moving cell, meaning its location is dynamically changing, the terminal can determine the actual location of the candidate cell based on its reference location, the reference time of the reference location, and ephemeris information, and then determine the distance between itself and the candidate cell based on the actual location of the candidate cell and its own location.

[0510] In some embodiments, the time information of the candidate cell may include at least one of the following: a first time period, the start time of the first time period, the end time of the first time period, the duration of the first time period, and the time of the terminal.

[0511] In some embodiments, the terminal can determine a first time period for which the candidate cell will provide services to the terminal based on the candidate cell's time information. For example, the terminal can determine the first time period based on the start time and end time of the first time period. For example, the terminal can determine the first time period based on the start time and duration of the first time period. For example, the terminal can determine the first time period based on the end time and duration of the first time period.

[0512] In some embodiments, if the event includes signal quality information of the serving cell and location information of the candidate cell, the terminal can determine whether the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to a signal quality threshold based on the signal quality information of the serving cell; the terminal can determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, then the terminal switches to the candidate cell.

[0513] In some embodiments, if the event includes signal quality information of the serving cell and time information of the candidate cell, the terminal can determine whether the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to a signal quality threshold based on the signal quality information of the serving cell; the terminal can determine whether its time is within a first time period based on the time information of the candidate cell. If the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, then the terminal switches to the candidate cell.

[0514] In some embodiments, if the event includes the location information of the candidate cell, the terminal can determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, the terminal switches to the candidate cell.

[0515] In some embodiments, if the event includes the time information and location information of the candidate cell, the terminal can determine whether its time is within a first time period based on the time information of the candidate cell, and determine whether the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to a distance threshold based on the location information of the candidate cell. If the terminal's time is within the first time period, and the sum of the distance between the terminal and the candidate cell and the distance hysteresis factor is less than or equal to the distance threshold, then the terminal switches to the candidate cell.

[0516] In some embodiments, the steps and their optional implementations in other embodiments described before or after this embodiment, as well as other related parts in the specification, can be referred to, and will not be repeated here.

[0517] This disclosure also proposes an apparatus (also referred to as a communication device, etc.) for implementing any of the above methods. For example, an apparatus is proposed that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Furthermore, another apparatus is proposed that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0518] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0519] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0520] Figure 4a is an exemplary structural diagram of a terminal according to an embodiment of this disclosure. Terminal 4100 is used to execute any of the above methods. In some embodiments, as shown in Figure 4a, terminal 4100 may include:

[0521] The transceiver module 4101 and / or the processing module 4102 are configured to send a measurement report to the network device based on an event, and the processing module 4102 is configured to switch to a candidate cell based on an event; wherein the event includes at least one of the following:

[0522] Signal quality information of the serving cell and location information of candidate cells;

[0523] Signal quality information of the serving cell and time information of the candidate cells;

[0524] Location information of candidate cells;

[0525] The time information and location information of the candidate cells.

[0526] In some embodiments, the serving cell is a TN cell and the candidate cell is an NTN cell.

[0527] In some embodiments, the signal quality information of the serving cell includes at least one of the following:

[0528] RSRP;

[0529] RSRQ;

[0530] RS-SINR;

[0531] Signal quality threshold;

[0532] Signal quality hysteresis factor.

[0533] In some embodiments, the location information of the candidate cell includes at least one of the following:

[0534] Reference location of candidate cells;

[0535] Reference time for reference location;

[0536] ephemeris information;

[0537] The location of the terminal;

[0538] The distance between the terminal and the reference position;

[0539] Distance threshold;

[0540] Distance hysteresis factor.

[0541] In some embodiments, the time information of the candidate cell includes at least one of the following:

[0542] The first time period is the period during which the candidate cell provides services to the terminal;

[0543] The start time of the first time period;

[0544] The end time of the first period;

[0545] Duration of the first session;

[0546] Terminal time.

[0547] In some embodiments, the transceiver module 4101 is further configured to:

[0548] Receive configuration information sent by the network device, the configuration information including at least one of the following:

[0549] Signal quality information for the serving cell;

[0550] Location information of candidate cells;

[0551] Time information for candidate cells.

[0552] In some embodiments, the event includes at least one of the following:

[0553] The first event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0554] The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, which is the time period during which the candidate cell provides services to the terminal;

[0555] The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold;

[0556] The fourth event is: the terminal's time is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0557] In some embodiments, the entry conditions for the first event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0558] And / or,

[0559] The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0560] In some embodiments, the conditions for the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period.

[0561] And / or,

[0562] The conditions for leaving the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0563] In some embodiments, the entry condition for the third event includes: the sum of the distance and the distance hysteresis factor is less than or equal to a distance threshold;

[0564] And / or,

[0565] The conditions for leaving the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0566] In some embodiments, the entry conditions for the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0567] And / or,

[0568] The conditions for leaving the fourth event include: the time of the terminal is later than the end time of the first period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0569] Optionally, the transceiver module 4101 is used to perform at least one of the communication steps (such as steps S2101, S2102, S2201, and S3101, but not limited thereto) performed by the terminal 4100 in any of the above methods, which will not be elaborated here. Optionally, the processing module 4102 is used to perform at least one of the other steps (such as steps S2202 and S3201, but not limited thereto) performed by the terminal 4100 in any of the above methods, which will not be elaborated here.

[0570] Figure 4b is an exemplary structural diagram of a network device according to an embodiment of this disclosure. Network device 4200 is used to perform any of the above methods. In some embodiments, as shown in Figure 4b, network device 4200 may include:

[0571] The transceiver module 4201 is used to receive a measurement report sent by the terminal based on an event; wherein the event includes at least one of the following:

[0572] Signal quality information of the serving cell and location information of candidate cells;

[0573] Signal quality information of the serving cell and time information of the candidate cells;

[0574] Location information of candidate cells;

[0575] The time information and location information of the candidate cells.

[0576] In some embodiments, the serving cell is a TN cell and the candidate cell is an NTN cell.

[0577] In some embodiments, the signal quality information of the serving cell includes at least one of the following:

[0578] RSRP;

[0579] RSRQ;

[0580] RS-SINR;

[0581] Signal quality threshold;

[0582] Signal quality hysteresis factor.

[0583] In some embodiments, the location information of the candidate cell includes at least one of the following:

[0584] Reference location of candidate cells;

[0585] Reference time for reference location;

[0586] ephemeris information;

[0587] The location of the terminal;

[0588] The distance between the terminal and the reference position;

[0589] Distance threshold;

[0590] Distance hysteresis factor.

[0591] In some embodiments, the time information of the candidate cell includes at least one of the following:

[0592] The first time period is the period during which the candidate cell provides services to the terminal;

[0593] The start time of the first time period;

[0594] The end time of the first period;

[0595] Duration of the first session;

[0596] Terminal time.

[0597] In some embodiments, the transceiver module 4201 is further configured to:

[0598] Send configuration information to the terminal, the configuration information including at least one of the following:

[0599] Signal quality information for the serving cell;

[0600] Location information of candidate cells;

[0601] Time information for candidate cells.

[0602] In some embodiments, the event includes at least one of the following:

[0603] The first event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0604] The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the terminal's time is within the first time period, which is the time period during which the candidate cell provides services to the terminal;

[0605] The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold;

[0606] The fourth event is: the terminal's time is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

[0607] In some embodiments, the entry conditions for the first event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0608] And / or,

[0609] The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0610] In some embodiments, the conditions for the second event include: the sum of the signal quality of the serving cell and the signal quality hysteresis factor is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period.

[0611] And / or,

[0612] The conditions for leaving the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

[0613] In some embodiments, the entry condition for the third event includes: the sum of the distance and the distance hysteresis factor is less than or equal to a distance threshold;

[0614] And / or,

[0615] The conditions for leaving the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0616] In some embodiments, the entry conditions for the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold.

[0617] And / or,

[0618] The conditions for leaving the fourth event include: the time of the terminal is later than the end time of the first period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

[0619] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0620] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module.

[0621] In some embodiments, the processing module can be replaced by the processor, and the transceiver module can be replaced by the transceiver.

[0622] Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device 4200 in any of the above methods (e.g., steps S2101, S2102, S2201, and S3101, but not limited thereto), which will not be elaborated here.

[0623] Figure 5a is an exemplary structural diagram of the communication device proposed in an embodiment of this disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0624] As shown in Figure 5a, the communication device 5100 is used to execute any of the above methods. In some embodiments, the communication device 5100 includes one or more processors 5101. The processor 5101 may be a general-purpose processor or a special-purpose processor, such as a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control communication devices (e.g., base stations, baseband chips, terminals, terminal chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 is used to execute any of the above methods. Optionally, one or more processors 5101 are used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0625] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S2101, S2102, S2201, S3101, but not limited thereto), and the processor 5101 performs at least one of other steps (e.g., steps S2202, S3201, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0626] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data and / or instructions. Optionally, one or more processors 5101 are used to invoke instructions stored in the memory 5103 to cause the communication device 5100 to perform any of the above methods. Optionally, all or part of the memory 5103 may also be located outside the communication device 5100. In an optional embodiment, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuit 5104 is connected to the memory 5103 and can be used to receive data and / or instructions from the memory 5103 or other devices, and can be used to send data and / or instructions to the memory 5103 or other devices. For example, the interface circuit 5104 can read data and / or instructions stored in the memory 5103 and send the data and / or instructions to the processor 5101.

[0627] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5a. The communication device may be a standalone device or may be part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data, programs and / or instructions; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal, smart terminal, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0628] Figure 5b is an exemplary structural diagram of the chip proposed in an embodiment of this disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the structural diagram of the chip 5200 shown in Figure 5b, but it is not limited thereto.

[0629] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0630] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data and / or instructions. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, the interface circuit 5202 is connected to the memories 5203, and the interface circuit 5202 can be used to receive data and / or instructions from the memories 5203 or other devices, and the interface circuit 5202 can be used to send data and / or instructions to the memories 5203 or other devices. For example, the interface circuit 5202 can read data and / or instructions stored in the memories 5203 and send the data and / or instructions to the processor 5201.

[0631] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S2101, S2102, S2201, and S3101, but not limited thereto). The interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 5202 performing data and / or instruction interaction between the processor 5201, the chip 5200, the memory 5203, or the transceiver device. In some embodiments, the processor 5201 performs at least one of other steps (e.g., steps S2202 and S3201, but not limited thereto).

[0632] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0633] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0634] This disclosure also proposes a program product, including a program and / or instructions, which, when executed by a communication device, cause the communication device to perform any of the above methods. Optionally, the program product is a computer program product. Optionally, the program product is stored on the storage medium.

[0635] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0636] 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 disclosure.

[0637] 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.

[0638] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure 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 disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A communication method, characterized in that, The method, executed by a terminal, includes: Based on the event, a measurement report is sent to the network device and / or a handover to a candidate cell is performed; wherein the event includes at least one of the following: The signal quality information of the serving cell and the location information of the candidate cells; The signal quality information of the serving cell and the time information of the candidate cell; The location information of the candidate cells; The time information and location information of the candidate cells.

2. The method according to claim 1, characterized in that, The serving cell is a terrestrial network (TN) cell, and the candidate cell is a non-terrestrial network (NTN) cell.

3. The method according to claim 1 or 2, characterized in that, The signal quality information of the serving cell includes at least one of the following: Reference signal received power RSRP; Reference signal reception quality (RSRQ); The signal-to-interference-plus-noise ratio (RS-SINR) of the reference signal; Signal quality threshold; Signal quality hysteresis factor.

4. The method according to claim 1 or 2, characterized in that, The location information of the candidate cells includes at least one of the following: The reference location of the candidate cell; The reference time of the reference position; ephemeris information; The location of the terminal; The distance between the terminal and the reference position; Distance threshold; Distance hysteresis factor.

5. The method according to claim 1 or 2, characterized in that, The time information of the candidate cells includes at least one of the following: The first time period is the period during which the candidate cell provides services to the terminal; The start time of the first time period; The end time of the first time period; The duration of the first time period; The time of the terminal.

6. The method according to any one of claims 1-5, characterized in that, The method further includes: Receive configuration information sent by the network device, the configuration information including at least one of the following: The signal quality information of the serving cell; The location information of the candidate cells; The time information of the candidate cells.

7. The method according to any one of claims 1-6, characterized in that, The event includes at least one of the following: The first event is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold; The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the time of the terminal is within a first time period, which is the time period during which the candidate cell provides services to the terminal; The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold. The fourth event is: the time of the terminal is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

8. The method according to claim 7, characterized in that, The conditions for the first event include: the sum of the signal quality and the signal quality hysteresis factor of the serving cell is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold; And / or, The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

9. The method according to claim 7, characterized in that, The conditions for the second event include: the sum of the signal quality and the signal quality hysteresis factor of the serving cell is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period; And / or, The departure conditions for the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

10. The method according to claim 7, characterized in that, The entry conditions for the third event include: the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold; And / or, The departure conditions for the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

11. The method according to claim 7, characterized in that, The conditions for entering the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold. And / or, The departure conditions for the fourth event include: the time of the terminal is later than the end time of the first time period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

12. A communication method, characterized in that, Performed by a network device, the method includes: The receiving terminal sends a measurement report based on an event; wherein the event includes at least one of the following: Signal quality information of the serving cell and location information of candidate cells; The signal quality information of the serving cell and the time information of the candidate cell; The location information of the candidate cells; The time information and location information of the candidate cells.

13. The method according to claim 12, characterized in that, The serving cell is a TN cell, and the candidate cell is an NTN cell.

14. The method according to claim 12 or 13, characterized in that, The signal quality information of the serving cell includes at least one of the following: RSRP; RSRQ; RS-SINR; Signal quality threshold; Signal quality hysteresis factor.

15. The method according to claim 12 or 13, characterized in that, The location information of the candidate cells includes at least one of the following: The reference location of the candidate cell; The reference time of the reference position; ephemeris information; The location of the terminal; The distance between the terminal and the reference position; Distance threshold; Distance hysteresis factor.

16. The method according to claim 12 or 13, characterized in that, The time information of the candidate cells includes at least one of the following: The first time period is the period during which the candidate cell provides services to the terminal; The start time of the first time period; The end time of the first time period; The duration of the first time period; The time of the terminal.

17. The method according to any one of claims 12-16, characterized in that, The method further includes: The terminal is sent configuration information, which includes at least one of the following: The signal quality information of the serving cell; The location information of the candidate cells; The time information of the candidate cells.

18. The method according to any one of claims 12-17, characterized in that, The event includes at least one of the following: The first event is: the signal quality of the serving cell is less than or equal to a signal quality threshold, and the distance between the terminal and the candidate cell is less than or equal to a distance threshold; The second event is: the signal quality of the serving cell is less than or equal to the signal quality threshold, and the time of the terminal is within a first time period, which is the time period during which the candidate cell provides services to the terminal; The third event is: the distance between the terminal and the candidate cell is less than or equal to the distance threshold. The fourth event is: the time of the terminal is within the first time period, and the distance between the terminal and the candidate cell is less than or equal to the distance threshold.

19. The method according to claim 18, characterized in that, The conditions for the first event include: the sum of the signal quality and the signal quality hysteresis factor of the serving cell is less than or equal to the signal quality threshold, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold; And / or, The departure conditions for the first event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

20. The method according to claim 18, characterized in that, The conditions for the second event include: the sum of the signal quality and the signal quality hysteresis factor of the serving cell is less than or equal to the signal quality threshold, and the time of the terminal is later than the start time of the first time period; And / or, The departure conditions for the second event include: the difference between the signal quality of the serving cell and the signal quality hysteresis factor is greater than or equal to the signal quality threshold; and / or, the time of the terminal is later than the end time of the first time period.

21. The method according to claim 18, characterized in that, The entry conditions for the third event include: the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold; And / or, The departure conditions for the third event include: the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

22. The method according to claim 18, characterized in that, The conditions for entering the fourth event include: the time of the terminal is later than the start time of the first time period, and the sum of the distance and the distance hysteresis factor is less than or equal to the distance threshold. And / or, The departure conditions for the fourth event include: the time of the terminal is later than the end time of the first time period; and / or, the difference between the distance and the distance hysteresis factor is greater than or equal to the distance threshold.

23. A terminal, characterized in that, include: The transceiver module and / or processing module are configured to send a measurement report to the network device based on an event, and the processing module is configured to switch to a candidate cell based on the event; wherein the event includes at least one of the following: The signal quality information of the serving cell and the location information of the candidate cells; The signal quality information of the serving cell and the time information of the candidate cell; The location information of the candidate cells; The time information and location information of the candidate cells.

24. A network device, characterized in that, include: A transceiver module is used to receive measurement reports sent by the terminal based on events; wherein the events include at least one of the following: Signal quality information of the serving cell and location information of candidate cells; The signal quality information of the serving cell and the time information of the candidate cell; The location information of the candidate cells; The time information and location information of the candidate cells.

25. A communication device, characterized in that, The communication device is used to perform the communication method according to any one of claims 1 to 11, 12 to 22.

26. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the communication method of any one of claims 1 to 11, and the network device is configured to implement the communication method of any one of claims 12 to 22.

27. A storage medium storing instructions, characterized in that, When the instruction is executed on the communication device, it causes the communication device to perform the communication method as described in any one of claims 1 to 11, or causes the communication device to perform the communication method as described in any one of claims 12 to 22.

28. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the steps of the communication method according to any one of claims 1 to 11, or implements the steps of the communication method according to any one of claims 12 to 22.

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